INVIOLABLE PACKAGING AND METHODS FOR THE MANUFACTURING OF THE SAME

专利摘要:
tamper-proof packaging and methods for manufacturing them. a resealable, tamper-evident pouch that includes a front wall with a resealable first feature and a back wall with a resealable second feature adapted to form a seal with the resealable first feature. the front and rear walls are sealingly connected along at least one pair of sides to define at least a portion of a conservation portion of the pouch. a portion of the sealed tamper evident strip is formed integrally with the preservation portion and is disposed adjacent the first and second resealable features. at least one seam is disposed between the preserving portion and the strip portion to allow the strip portion to be selectively removed, at least partially, from the preserving portion by a user. at least one tab is defined by splicing to facilitate user movement of the first and second resealable feature from a sealed position to an unsealed position.
公开号:BR112016004110B1
申请号:R112016004110-0
申请日:2014-08-29
公开日:2021-07-27
发明作者:Charles R. Tomsovic；Stephen D. Franger；Martin Gottvald；Sarah Austin O'brien；Alexander Manfred Schmidt-Forst
申请人:Kimberly-Clark Worldwide, Inc；
IPC主号:

专利说明:

CROSS REFERENCE TO RELATED ORDERS
[01] This application claims the benefit of U.S. Provisional Patent Application Serial No. 61/872,148, filed August 30, 2013, which is incorporated herein by reference in its entirety. FIELD
[02] The present disclosure refers to tamper-evident packaging and specifically tamper-proof packaging for absorbent articles for personal care, such as tampons. FUNDAMENTALS
[03] Depending on the type of absorbent personal care articles to be stored in a pouch-like package (such as polymer film pouches or polymer foil), it has become common for the package to include resealable structures, such as strips with an adhesive base, interlocking parts and/or zipper-like structures that allow manual opening and closing of the package. One of the most prevalent types of interlocking parts can generally be described as interlocking airtight structures that are positioned between opposite walls of the carton, although interlocking parts may also include hook and loop style structures in place of airtight fastening structures by interlock. Applying pressure to the opposing interlocking sealing structures, along their length dimension, at the same time causes the rib to rest releasably within the groove, thus creating a temporary seal for opening in the package. These structures mimic a zipper-like movement during the seal and unseal operation, although the interlocking teeth common to a traditional zipper are not present. These interlocking features, similar to the zipper, are normally also placed immediately along or adjacent to the edges defining the opening of the pouch package and allow selective opening and closing of the opening of the pouch package. The zipper-like structure may also include a sliding mechanism that assists in locking and unlocking (ie, coupling and uncoupling) the interlocking parts to selectively seal and unseal the pouch opening.
[04] Parts with an interlocking or zipper-like structure facilitates a user (eg a consumer) to be able to selectively remove one or more of the items from the packaging without destroying the packaging. Resealable packaging has been used for a wide range of consumer goods, such as product storage, sandwiches, disposable razor blades and tampons. Traditional zippered or resealable packages have an opening defined by straight edges adjacent and/or parallel to the resealable frame or zipper-like frame to facilitate fabrication. The bag is also shaped to have straight edges, or cut with a straight cut edge adjacent to the zipper-like/resealable feature. As a result of bag manufacturing processes, the straight edges that define the bag opening often curve in one direction from each other, making it difficult for the user to separate them when using the bag.
[05] The description of plastic containers in U.S. Patent Application Publication No. 2008/0105679 to Ballard exemplifies resealable packaging. The packaging described by Ballard additionally includes tabs offset for opening along the opening edges, adjacent to the interlocking, zipper-like feature. These offset tabs are not centered in relation to each other and allow you to easily grip and separate the edges of the opening (to form an easy open feature). See, specifically, Fig. 2 of Ballard. As shown in the figure, these offset flaps are staggered together along the edge of the full opening of both walls of the pouch. Without these flaps, it is often difficult to separate the normally straight edges of the bag opening, adjacent to the zipper-like feature. Offset flaps provide substantial extensions of the bag walls, these extensions are more apparent, both visually and tactilely, and easier to separate than straight edges. Furthermore, since polymer and foil films tend to adhere to similar materials (such as the opposite walls of a pouch), the offset flaps provide an additional means of separating the adherent walls from one another when static electricity, or other forces, are holding the edges of the bag together.
[06] Offset flaps are further illustrated in US Patent No. 5,683,340 to Belias, which illustrates various offset flap designs for pocket opening edges and also in US Patent Application Publication No. 2011/ 268373 to Polland, which illustrates a single pair of flaps not centered along the edges of the pocket opening. As with straight edge pouches, fabrication of these offset flaps in a pouch typically involves pre-molding the edges to a specific shape, or cutting the edges during fabrication. However, due to the nature of the tab bulge, this cut is often performed using a die cut, a non-straight shaped edge cutting die, or a more elaborate cutting apparatus. The flap feature, therefore, can add a degree of manufacturing complexity not seen in bags with only straight edges. Even with the use of offset flaps, these packages, although resealable, are not tamper-proof.
[07] The use of tamper-evident features in connection with resealable pouches with straight-edged openings is known. For example, such tamper-evident features have been used in bags in which stored consumable items may pose a consumer safety hazard if exposed to germs prior to use, or if exposed to the environment prior to use. These tamper-evident features are also placed on these bags to signal intentional tampering prior to purchase of the item or to ensure the user a clean or sterile environment on the inner surface of the bag prior to use. See, for example, the disclosure in U.S. Patent Application Publication No. 2011/0158565 to Hellming et al.
[08] These tamper-evident, resealable pouches are used to store miscellaneous items such as pre-washed green salads, disposable razor blades and tampons, and are usually presented to the consumer with a resealable sealed feature. Tamper-proof packages often include a security seal adjacent to the pouch opening (and adjacent to the resealable structure). The security seal is sealed until a user intentionally tears, cuts or breaks the seal. For example, a pull, tear, or cut region over the security seal is often identified so the user can remove it before opening an interlock feature, similar to a zipper. Once the security seal is removed or altered, the resealable structure is exposed for the user to remove the seal and thus open the pouch-like package. See, for example, the disclosure in Hellming above and U.S. Patent No. 7,134,788 to Hsiang. Removal or alteration of the security seal is often done in a single step, so that multiple parts of the packaging do not have to be removed separately by consumers, and extra residual parts are discarded. Although this single removal step is initially easier for the consumer, the detachable portion and opening edges of the resulting pouch are often straight parallel or slightly irregular edges, again leading to difficulty in opening the pouch at the portion. resealable.
[09] Therefore, there is a need for a tamper-evident polymer film or foil pouch that allows for easy opening but also provides secure storage of items stored within the pouch until the pouch is intentionally opened by a user. In addition, there is a need for resealable, easy-to-open pouches that signal to a user when this pouch has been previously opened by someone other than the intended user, i.e., otherwise structurally compromised.
[10] Users often find it difficult to remove individual absorbent articles from storage pouches used to store absorbent articles for personal care. When these bags are opened, in a public or private setting, it is often difficult for the user to discreetly remove a single desired product from the bag. Since normally only one product is used at a time, it is desirable for a user to be able to remove a single product from a pouch without multiple products falling out of the package. However, the neck of the bag opening may be too narrow to allow a user to easily insert their hand into the bag in order to select the only desired product. On the other hand, the neck of the bag may be too large to easily allow the removal of an individual item (or selection of an item without contact with others in the bag). If the pouch is tilted to withdraw the article through the pouch opening, often several unnecessary articles are spilled together rather than just the desired article. Sometimes individually wrapped absorbent products are hermetically packed inside an outer package, and it is very difficult to remove just one at a time. For articles involving personal care, unintentional contact with these unnecessary and unused articles is not favorable, to preserve the cleanliness of these articles, until actual use is desired. Therefore, there is a need for an easy dispensing feature that can be used in conjunction with an easy-to-open, tamper-evident, resealable package to facilitate the removal of a single item from a pouch at any given time. SUMMARY
[11] In one embodiment, a resealable, tamper-evident pouch has a longitudinal direction, a transverse direction, a depth direction, and at least four peripheral side edges. The pouch generally comprises a front wall, including a resealable first feature, and a rear wall, including a resealable second feature adapted to form a seal with the resealable first feature of the front wall. The front and rear walls are sealingly connected along at least one pair of sides to define at least a portion of a conservation portion of the pack. A portion of the sealed tamper-evident strip is formed integrally with the discarded preservation portion adjacent to the first and second resealable features of the front and rear walls. At least one seam is disposed between the preserving portion and the strip portion to allow the strip portion to be selectively removed, at least partially, from the preserving portion by a user. At least one tab is defined by splicing to facilitate user movement of the first and second resealable feature from a sealed position to an unsealed position.
[12] In another embodiment, a resealable and tamper-evident pouch has a longitudinal direction, a transverse direction, a depth direction, and at least four peripheral side edges. The pouch includes at least the first and second substantially flat opposite panels, sealingly connected along at least one pair of sides, forming at least a portion of a conservation portion of the pouch. The bag also includes a pair of fully-formed or non-fully-formed resealable resources, each on or in flat panels. A portion of the tamper-evident and integrally formed tamper-evident strip is adjacent to the resealable features. At least one separating seam defines the portion of the sealed tamper evident strip. The seam defines at least one easy-open flap on the pouch. In an alternative embodiment, the resealable and tamper-evident pouch includes four or more flat panels. In yet another alternative embodiment, the resealable and tamper-evident pouch includes five or more flat panels. In another alternative embodiment, the resealable and tamper-evident pouch includes a pair of resealable features that are selected from the group consisting of interlocking airtight closure structures, adhesive strips, hook and loop structures, materials with varying coefficients of friction, magnetic fastening systems , and zipper-like features. In another alternative embodiment, the tamper-evident portion of the strip is removable from the resealable, tamper-evident pouch. In yet another alternative embodiment, the tamper-evident portion of the strip includes a flap structure for easy folded opening. In this embodiment, the tamper evident portion of the strap may or may not be removable from the pouch.
[13] In another alternative embodiment, the resealable and tamper-evident pouch includes a separating splice selected from the group consisting of perforations, weakened areas, and combinations of the two. Weakened areas can be the result of embossing, for example. In yet another alternative embodiment, the split splice is formed from perforations that are selected from the group consisting of perforated dashes, perforated lines, and perforated points. In another alternative embodiment, the splice includes both the perforations and the weakened areas, with the perforations located on at least a portion of the periphery of the at least one easy-open tab. In yet another modality of the bag, the bag includes at least two easy-open flaps. These flaps can be on the same wall or on different walls of the bag. Additionally, these flaps can be integral or non-integral part of at least one of the pocket walls.
[14] In another alternative embodiment, the pouch includes single or multiple snap-open flaps that extend along the entire transverse direction of the pouch. In another alternative embodiment, the easy-open tabs include a folded portion. In another alternative embodiment, the easy-open flap is supported by a reinforcing agent selected from the group consisting of a coating reinforcement, additional grammage of the flap-forming material and adhesives made from the reinforcing material. In another embodiment, the pouch includes at least one dispensing indicator along at least one flat panel to facilitate dispensing an individual item that may be contained in the pouch. This distribution indicator can be through words, symbols or a combination of the two. In another alternative embodiment, the distribution indicator is positioned on at least one flat panel parallel to the direction of the displayable features. In another alternative embodiment, the distribution indicator is positioned on at least one flat panel in a direction perpendicular to the reportable features. In yet another alternative embodiment, an integrally formed and sealed portion of the tamper evident strip includes a removal indicator to facilitate removal of the strip portion along the seam. This strip can also include a structure to start the tear, such as a cutout.
[15] In another alternative embodiment, the resealable and tamper-evident pouch includes stacked, individually packaged absorbent personal care articles that are contained in the pouch, the articles are stacked in parallel with any direction or perpendicular to the resealable features and additionally at least one of the flat panels includes at least one distribution indicator.
[16] In another alternative embodiment, the resealable and tamper-evident pouch includes at least two easy-open flaps, the flaps being defined by two splices, one splice being present within each flat panel, with each flap being defined separately by each of the two amendments. The seams are generally aligned with each other, with the exception of the flaps defined by the seams, the flaps being offset relative to one another along the Z direction of the bag.
[17] In an alternative embodiment, the resealable and tamper-evident pouch includes flaps that are generally semicircular in shape and include peaks and the distance between the peaks is between about 1 and 75 mm, alternatively between about 5 and 30 mm. The peak-to-peak distance is between adjacent peaks on the same wall, or on different, opposite walls. In yet another alternative embodiment, at least one tab has a base width of between about 5 and 75 mm in the transverse direction. In another alternative embodiment, at least one flap has a height between about 5 and 50 mm. In yet another alternative embodiment, the flaps have a percentage of the surface area that overlaps in the Z direction of between about 0 and 90%.
[18] In an alternative embodiment, the resealable and tamper-evident pouch includes flaps that are separated along the transverse direction by a distance of between about 0 and 50 mm. In an alternative embodiment, the resealable and tamper-evident pouch includes a separating splice having at least one straight splice length portion along the transverse direction of the pouch that is parallel to the resealable features, alternatively two straight splice length portions. In an alternative embodiment, the tamper-evident resealable pouch includes a separating splice that does not include a portion of the straight splice length that is parallel to the resealable features.
[19] A method for forming a resealable and tamper-evident pouch includes the steps of a) providing a flat substrate or sheet material having a machine direction and a cross machine direction, the flat substrate having machine direction edges and in cross machine direction; b) attaching or otherwise adhering a pair of resealable features adjacent to opposite edges between the machine direction of the flat substrate and along the same surface of the flat substrate, the resealable features running along the machine direction of the flat substrate; c) perforate two lines or otherwise provide the two lines of weakness along the flat substrate machine direction, so that the lines of perforation or weakness are located the same distance laterally beyond the resealable features towards the opposite edges in the machine direction of the flat substrate, the lines of perforation or lines of weakness, including along their length at least two opposite flap portions, the flap portions displaced from each other along the machine direction; d) folding the flat substrate along a fold line situated equidistant from the resealable features, thereby aligning the resealable features; e) cutting the flat substrate at least along the cross machine direction; f) joining, or otherwise affixing, the machine direction and cross machine direction edges of the planar substrate so that the resealable features are aligned with each other in a finished pouch.
[20] In one embodiment, the folding step is in the cross machine direction, shaped like a W. In another suitable embodiment, the folding step is in the cross machine direction, shaped like a V. In an alternative embodiment , the resealable features are added to the flat substrate after the perforation or weakening step c). Other suitable embodiments of the method include the steps of adding at least one additional pair of resealable features along the machine direction of the flat substrate and/or adding at least one discrete resealable aperture within the flat substrate. In a suitable embodiment, the perforation step is carried out with a barrier plate adjacent to the flat substrate.
[21] In an appropriate embodiment, the method further includes the step of providing a distribution indicating means along the flat substrate wherein the distribution indicating means are parallel to the relableable resources, perpendicular to the relableable resources, or a combination thereof. . Suitably the lines of perforation, or otherwise weakened lines, can be separated from the resealable features along the cross machine direction by between about 1 to 50 mm.
[22] In another embodiment, a method for forming a resealable and tamper-evident pouch for placing at least one absorbent article generally comprises a flat substrate moving in a machine direction. Flat substrate has two opposite edges. A first writeable feature is bonded to the substrate generally adjacent the edges, and a second writeable feature is bonded to the substrate in a relationship away from the first writeable feature and generally adjacent the other edge. The first and second resealable features are configured to dock in a sealed fashion. A first separating splice is formed on the substrate between the resealable feature and the respective edge of the substrate. The first seam of separation defines a first tab. A second parting splice is formed on the substrate between the second resealable feature and the respective edge such that the first and second parting splices are generally the same distance from the respective first and second resealable feature. The second separating seam defines a second tab wherein the second tab is displaced relative to the first tab. At least one absorbent article is placed in contact with the substrate. The substrate is folded and sealed to define the resealable and tamper-evident pouch, having at least one absorbent article disposed therein.
[23] In another embodiment, a method of forming a plurality of resealable and tamper-evident pouches to store absorbent articles therein generally comprises directing, in the machine direction, a continuous network comprising a plurality of interconnected segments suitable for constructing a plurality of handbags. The plurality of segments are interconnected in the cross machine direction. At least one continuous separation splice is formed in the web using a laser. The separation splice extends through the plurality of interconnected segments and defines at least one tab on each of the segments. The continuous network is cut in the cross-machine direction to separate the plurality of interconnected segments of the network and to form a plurality of discrete segments. At least one absorbent article is associated with each discrete segment. Each of the discrete segments is folded and sealed to store at least one absorbent article. BRIEF DESCRIPTION OF THE DRAWINGS
[24] FIGURE 1 is a front view of a suitable embodiment of an easy-open, tamper-evident, resealable pouch-type package filled with articles.
[25] FIGURE 2 is a front view of the pouch-style package of FIGURE 1 with a portion of the removable strip partially removed.
[26] FIGURE 3 is a front view of the pouch-style package of FIGURE 1 with the removable strip portion fully removed.
[27] FIGURE 4 is a fragmentary front perspective view of the pouch-style package of FIGURE 1 with a pouch opening visible after a resealable feature has been unsealed and the removable strip portion has been removed.
[28] FIGURE 5 is a front view of another suitable embodiment of the easy-open, tamper-evident and resealable pouch-type packaging.
[29] FIGURE 5A is a side view of the pouch package of FIGURE 5.
[30] FIGURE 5B is a fragmentary front view of another embodiment of perforation lines (or other lines of weakness) defining the easy-open flaps.
[31] FIGURE 5C is a fragmentary front view of another modality of perforation lines (or other lines of weakness) defining the easy-open flaps.
[32] FIGURE 5D is a fragmentary front view of yet another embodiment of perforation lines (or other lines of weakness) defining the easy-open flaps.
[33] FIGURE 5E is a fragmentary front view of another embodiment of perforation lines (or other lines of weakness) defining the easy-open flaps.
[34] FIGURE 5F is a fragmentary front view of yet another embodiment of perforation lines (or other lines of weakness) defining the easy-open flaps.
[35] FIGURE 5G is a fragmentary front view of another easy-open flap embodiment of a resealable pouch-type package.
[36] FIGURE 5H is another view of the tabs of FIGURE 5G.
[37] FIGURE 6 is a front view of another suitable embodiment of the easy-open, tamper-evident, resealable pouch-type packaging of FIGURE 5.
[38] FIGURE 7 is a top perspective view of the pouch-style package of FIGURE 1, illustrating the manual dispensing of an article of the package using the pinch indication lines once the resealable feature has been unsealed and the pouch-like package has been opened. .
[39] FIGURE 8 is a view of another suitable embodiment of an article-filled pouch-type package as shown in FIGURE 5, illustrating manual dispensing of an article from the package using indication lines and written instructions.
[40] FIGURE 9 is a perspective view of another suitable embodiment of the pouch of FIGURE 1 illustrating various side panels in the construction of the pouch package.
[41] FIGURE 10 is a fragmentary front view of another embodiment of the pouch-type package of FIGURE 1, in which the front wall of the pouch includes a perforated seam other than the perforated seam of the rear wall of the pouch.
[42] FIGURE 11 is a fragmentary front view of another suitable embodiment of the pouch-style packaging of FIGURE 1, in which the pouch includes a seam at the upper edge of the tamper evident portion.
[43] FIGURE 11A is an enlarged view of a portion of the pouch-like package shown in FIGURE 11, showing a movable flap at the top edge seam.
[44] FIGURE 11B is an enlarged view of a portion of the pouch-like package shown in FIGURE 11, showing the movable flap open at the top edge seam.
[45] FIGURE 11C is a front view of the pouch package of FIGURE 11 with the movable flap in an open position.
[46] FIGURE 11D is a top perspective view of the pouch package of FIGURE 11 with the flap being used to separate the walls of the tamper evident portion of the strip.
[47] FIGURE 11E is another top view of the pouch package of FIGURE 11 with the walls of the tamper-evident strip portion being separated to expose and open the resealable features.
[48] FIGURE 12 is a fragmentary front view of another suitable embodiment of the pouch packaging of FIGURE 1, including two non-aligned seams in the tamper evident portion of the strip, with a reinforcing agent affixed to one or both of the front and rear walls.
[49] FIGURE 12A is a fragmentary view of the process of manually removing the tamper-evident strip portion of the pouch pack shown in FIGURE 12.
[50] FIGURE 12B is a fragmentary view of the process of manually removing the tamper-evident strip portion of the pouch-style package shown in FIGURE 12A.
[51] FIGURE 12C is a top view of the pouch-style package shown in FIGURE 12B with the tamper evident portion removed and an adhesive decal affixed as a reinforcing agent.
[52] FIGURE 12D is a fragmentary top view of the bag-type package opening process shown in FIGURE 12 as the tamper-evident portion of the strip has been removed and the resealable features exposed.
[53] FIGURES 13A-13G illustrate a production method suitable for fabricating pouch-style packaging from flat sheet materials.
[54] FIGURES 14A-14K illustrate another production method suitable for manufacturing pouch-type packages.
[55] FIGURE 15 is a fragmentary front view of yet another suitable embodiment of the pouch packaging of FIGURE 1, in which the front wall of the pouch includes a perforated seam other than the perforated seam of the rear wall of the pouch as a result of a barrier plate used in the formation of the scholarship.
[56] FIGURE 16 is a schematic illustration of another production method suitable for manufacturing pouch-type packaging.
[57] FIGURE 17 is a top plan view of a continuous network exiting a laser station during the production method, seen in FIGURE 16.
[58] FIGURE 18 is a side cross-sectional view of the continuous network being cut at the laser station.
[59] FIGURES 19 and 20 are photographs showing portions of the suitable modalities of the pouch packaging having separating seams and associated flaps formed therein using a directed laser tracing technique.
[60] FIGURE 21 illustrates exemplary cut patterns suitable for forming the split seams with a laser-directed tracing technique. DETAILED DESCRIPTION OF THE DRAWINGS
[61] It has been found that one or more offset flaps incorporated into a resealable pouch packaging allows a user (eg, a consumer) to easily open the resealable pouch packaging. When a portion of the tamper evident (or sealed) strip is removed from the pouch-style packaging, the offset flaps can be left in place along the top edge of the pouch to facilitate separation of the resealable features of the pouch. In a suitable embodiment, the offset tabs are reinforced or configured to prevent accidental removal of the tabs along with the tamper-evident strip portions. In other embodiments, at least a portion of the tamper-evident strip portion remains in place when it is opened, and the offset tabs remain in place with the remaining portion of the tamper-evident strip portion to aid in opening the resealable features. In addition, selective placement of distribution indication marks along at least one direction of the pouch package can facilitate the removal of a single absorbent article contained in the pouch package.
[62] For purposes of the following description, "similar" numbers may be used to indicate "similar" or similar characteristics of the various exchanges disclosed in this document. It should be recognized that, for the purposes of this application, the term "resealable" is not limited to features of interlocking airtight structures or zipper-like structures. For example, resealable technology can also include materials with different coefficients of friction, hook-and-loop fastening systems, and pressure-sensitive adhesive arrangements. The term "resealable resource" refers to a structure in or on the bag that is capable of repetitively opening and closing (sealing or unsealing, or opening and closing) without destroying materials during the opening or closing steps (or steps seal and unseal). These resealable features can be formed integrally with the substrates/flat sheets of a pouch, such as during melt forming, or alternatively added later to these sheets, such as through adhesive bonding. The repetitive adherence and separation of pressure-sensitive adhesive strips to bag components, the locking and unlocking of the closure components by interlocking or opening and closing of the sealing systems are resealable features contemplated within the meaning of the term in this application. Furthermore, it is also envisaged that more than one pair of resealable features can be used in conjunction with the pouch of the invention, such as, for example, a series of adjacent interlocking airtight structures. Interlock sealing technology (and methods of doing the same) can be seen in U.S. Patents No. 5,647,100 to Porchia et al, 7,137,736 to Pawloski et al, 7,410,298 to Pawloski, and 7,494,333 to Pawloski, each of which is incorporated herein by reference in their entirety. For the purposes of this application, it should be recognized that polymeric film/sheet substrates, polymeric non-woven sheet substrates, laminates thereof, metallic paper sheet substrates, as well as woven sheet substrates are contemplated as potentially pouch-forming materials for the purposes of the disclosure.
[63] Figure 1 is a front view of a suitable embodiment of a tamper-evident, resealable pouch-type package, generally indicated by the number 10, with features for easy opening. With specific reference to Figure 1, the illustrated pouch 10 has a generally longitudinal Y direction, a generally transverse X direction, and a generally Z depth direction. /or non-woven sheet materials, metallic sheets, woven materials or combinations thereof (such as laminates of the aforementioned materials). These polymeric films and non-woven sheets can be produced with, for example, polyolefin materials as known in the art. These film materials can include monolayer or multilayer films, or combinations thereof. These non-woven sheet materials can include a variety of melt-extruded fibrous webs (such as meltblown or spunbond materials, for example), or laminate combinations thereof. These pouch construction materials are desirably sheet-like flat substrates, which are capable of being stored in rolls prior to pouch fabrication, or alternatively, capable of being produced in-line, such as via die extrusion or melt processes.
[64] In the embodiment illustrated in Figure 1, the bag 10 includes two distinct portions. The first portion is a storage portion of the pouch 20 for containing consumer goods or articles 60, and the second portion is a portion of the tamper evident strip 30, which may be a disposable or otherwise removable piece of packaging (also referred to herein document as a removable strip portion). The pouch conservation portion 20 includes a front wall 80 and a bottom wall 81 that cooperatively define at least a portion of the inner volume space of the pouch for storing the goods or items 60 and an opening pouch 46 that can be selectively sealed by a resealable resource 28 (Figure 4). Front and rear walls 80, 81 are formed from substantially flat panels, sealingly connected along at least one pair of sides. The removable strip portion 30 is completely or partially removed by a consumer prior to opening the pouch (i.e., prior to separating/removing the seal from the resealable resource 28) and prior to removing one or more of the articles 60 for use. This portion of the release strip 30 is ideally removed as a one-piece residual in a single removal step along a predefined splice and is discarded by the consumer. The pouch preserving portion 20 and the removable strip portion 30 are generally separated by a separating seam 25 which separately traverses each of the pouch front and back walls 80, 81 along the transverse direction of pouch X from a side edge to the other one. Note that the separation splice 25 can alternatively run in the longitudinal direction Y (adjacent and parallel to a resealable feature 28), but this is not shown in the various figures.
[65] When removed, the removable strip portion 30 leaves at least one easy-open tab (a pair of open tabs 40, 42, seen in Figure 4) in place for opening the resealable features 28 of the pouch. In other embodiments and as will be described later, the tamper-evident strip portion 30 may include only a partially removable or detachable tab portion (as in Figure 11). In such an embodiment, the tamper-evident strip portion is not removable, but is capable of being opened along an opening seam (503 of Figure 11) through the use of a tab (504), prior to removal of the seal from the resource. resealable 28. The structural arrangement of the pouch 10 allows for the removal or opening of a tamper-evident strip portion 30, without destroying the easy-open flaps 40, 42 in the process. The flaps 40, 42 can be used repeatedly to open the resealable resource 28 each time a user wishes to remove one or more of the articles 60 from the interior of the storage portion of the pouch 20. In the illustrated embodiment, each of the flaps 40, 42 has a generally convex configuration. In other suitable embodiments, however, one or more of the tabs 40, 42 may have any suitable configuration, including a generally concave configuration (e.g., a cutout).
[66] In the resealable pouch-type packaging embodiment of Figure 1, the pouch separating splice 25 is comprised of two individual separating splices 25a, 25b (as seen in Figure 3). The individual parting seams 25a, 25b define the edges of the tamper-evident strip portion 30 closest to the lower peripheral edge of the pouch 35 of the pouch holding portion 20. One of the individual parting seams 25a is on the front wall 80 and the other seam separating splice 25b is on the rear wall 81. In each of the respective front and rear walls 80, 81, each individual separating splice 25a, 25b defines at least one easy-open tab 40, 42. In one embodiment, the tabs 40, 42 are integral extensions of the front and rear walls 80, 81, which extend into the tamper-evident strip portion 30.
[67] In a suitable embodiment, the tabs 40, 42 are not aligned in the Z direction when viewed in the transverse direction of the pocket 10 (as seen in Figure 3), although the straight portions of the separation seams 25a, 25b are aligned. Although shown as a pair of flaps 40, 42, it is envisioned that, in other suitable embodiments, only one flap may be present in the pouch 10, either on the front or back wall, to assist in opening the resealable feature 28, which is longitudinally adjacent to the flap along the longitudinal direction Y. In another suitable embodiment, several non-aligned flaps 40, 42 may be present on each wall of the pocket 80, 81. The periphery of the pocket 10 includes four outer peripheral edges 32, 33, 34, 35, visible from the front view shown in Figure 1. The front and rear walls 80, 81 are sealed over their outer peripheral edges, 32, 33, 34, 35, to form the outer peripheral edges of the pouch of the mod. Figure 1. Although a pair of individual parting seams 25a, 25b are shown in Figure 1 and the immediately related figures, alternative embodiments may have any number of parting seams 25 defining an edge of the portion. tamper-evident strip 30. For example, in Figure 11, a separating seam 503 defines the edge of the tamper-evident strip portion 502 at the upper edge of the pouch 500.
[68] In the illustrated embodiment, the front and rear walls 80, 81 are sealed together along their outer peripheral edges 32, 33, 34, 35 so that there is no opening in the pouch 10 when presented to the consumer. Each of the outer peripheral edges 32, 33, 34, 35 can be sealed by adhesives, meltbonding or other bonding means during initial pocket formation or in the post-forming process. Sealing the edges of the pouch 10 can take place at various stages of production, in various sequences. For example, articles 60 can be loaded into the pouch and then one or more of the walls 80, 81 are sealed along their outer peripheral edges 32, 33, 34, 35, or alternatively all edges can be sealed and , at least one is reopened later for product loading. Specifically, the pouch 10 can be loaded with articles 60 from the upper peripheral edge 32 and sealed at various locations, or loaded from the lower peripheral edge 35 after the other peripheral edges are sealed (and the resealable feature 28 is sealed). Alternatively, at least the longitudinally directed side edges 33, 34 may be sealed initially and at least one of the remaining edges 32, 35 are sealed later. The resealable feature 28 can be sealed before or after all the peripheral edges 32, 33, 34, 35 are sealed. In a suitable embodiment, the pouch 10 may include a sheet of material that is folded to obtain two front and rear walls 80, 81, so that only the three side edges 32, 33, 34 (the side edges along the transverse direction and the upper side edge) need to be connected.
[69] The pouch 10 may be relatively flat, such as in a sandwich-carrying-like configuration, or alternatively it may have considerable depth in the Z direction. The desired depth depends on the type or types of articles 60 to be stored within. of the pouch, the flexibility of the material of construction of the pouch and the flexibility and depth of the items to be stored. Walls 80, 81 may have certain dimensions, or demonstrate expandable attributes, to accommodate relatively deep articles 60 (or thin articles) packaged in a single pile or in multiple piles within pouch 10. As seen in Figure 1, for example, a stack of four individually wrapped tampons without applicator is shown in ghost form. These individual tampons have a transverse dimension X5 along the transverse direction X. In one embodiment, the transverse dimension X5 of each of the tampons is less than the transverse dimension of the pocket X6 along the lower peripheral edge 35 and the dimension transverse of the bag X7 along the upper peripheral edge 32, so that the tampons can be easily inserted and/or removed from the bag 10. In actual storage, these tampons would likely also be stored one on top of the other along from the longitudinal direction of the bag, and parallel to the upper peripheral edge 32 (and the resealable feature 28) as seen in Figure 1, or in a stack with longitudinal direction as seen in Figure 5.
[70] Depending on the dimensions of the bag 10 and its ability to expand/curl with placement of the items 60 within the walls, the expandable and/or flexible bag can form a bottom-oriented sidewall and sidewalls to accommodate depth of the articles contained therein. For example, a pocket with two walls 10 is shown in Figures 5, 6 and 8, which, due to the depth of the stack of side-by-side tampons contained therein, essentially created the side walls 82 and/or the bottom wall 36, with the flexible bag closing over the tampons. In the embodiment illustrated in Figure 5, the pouch 10 is formed around eight articles 60 (for example, tampons without an applicator). As can be seen in Figures 5 and 5A, the articles 60 within the illustrated pouch 10 are aligned, four in width and two in depth, for a total of eight articles. It is understood, however, that any suitable number of items may be placed within the bag 10.
[71] Still referring to Figures 5 and 5A, the conservation portion 20 of the pouch 10 and specifically part of the conservation portion 20 remote from the portion of the strip 30 generally conforms to the articles 60 contained therein to form the side walls 82, which define the depth dimension Z of the pouch 10 and the bottom wall 36. As seen in Figure 5A, the depth dimension Z of the preservation portion 20 of the pouch 10 containing the articles 60 is significantly greater than the depth dimension. of the strip portion 30 and the portion of the preservation portion 20 adjacent to the strip portion. In fact, in this embodiment, the portion of the strip 30 and the portion of the preserving portion 20 adjacent the portion of the strip generally remain flat (similar to a sandwich carrying bag), which facilitates the consumer's ability to tear off the portion of the strip 30 from the pouch 10 along the separation seam 25 and the use of the resealable feature to selectively seal and unseal the pouch 10 once the strip portion is removed therefrom. As a result, the pocket 10 tapers internally in the depth dimension Z, as seen in Figure 5A, which is a side view of the pocket. As seen in Figure 5, the portion of the retaining portion 20 remote from the portion of the strip 30 has a transverse dimension (i.e. measured in the transverse direction X) smaller than the portion of the strap 30 and the portion of the adjacent preserving portion 20 the strip portion. As a result, the bag 10 tapers outwardly in the transverse dimension X as it extends upward, as illustrated in Figure 5.
[72] In another suitable embodiment, as seen in Figure 9, the bag 300 may include multiple side walls, formed separately, in addition to the front and rear walls, such as at least five walls, including two relatively narrow side walls 301, one relatively narrow bottom wall 302 and a front and rear wall 303 which are joined to form the pouch. It is anticipated that bag 300 can have any suitable number of walls. As with the previously described embodiments of Figure 1, the walls of the removable strip portion 30 are sealed at the peripheral edges and a separating seam 25 and resealable feature 28 separates the removable strip portion 30 from the pouch holding portion 20.
[73] Referring again to pouch 10 of Figure 1, the illustrated resealable feature 28 is positioned below and adjacent to the split seam 25 and further separates the pouch conservation portion 20 from the removable strip portion 30. In this embodiment, the feature resealable feature 28 is positioned between separable splice 25 and peripheral pocket lower edge 35 along the longitudinal direction Y. Desirably for this embodiment, resealable feature 28 is within about 1 and 50 mm of separable seam 25 (shown as separating distance Y1 in Figure 1) along the longitudinal direction Y, more specifically of pocket 10. In another suitable modality, the resealable feature 28 is within about 2 and 10 mm of the separable of the seam 25. The resealable feature 28 can be any type of resealable feature known in the art such as interlocking airtight closure structures, zipper-like features, pressure sensitive adhesive strips, adhesive fasteners, and hook and loop, magnetic fasteners or combinations of multiple resealable features. An interlocking, airtight closure structure is illustrated as the resealable feature 28 of Figure 1. It is desirable for the resealable feature 28 to be sealed when the consumer first receives the pouch 10, so that upon initial removal of the removable strip portion 30 by a consumer (or opening the tamper-evident portion of the strip), the preserving portion of the pouch 20 remains closed/sealed.
[74] As can be seen in Figures 3 and 4, one of the separating splices 25a defines a tab 40 on the front wall 80, which is not centered with tab 42 defined on the rear wall 81 by the splice 25b. In other respects (such as along much of its straight edge portions, where there are no defined tabs), the individual separation seams 25a, 25b, in each of the front and back walls 80, 81, are aligned with each other to the along the remainder of the transverse direction X of the pocket 10. The distance between the separation seam 25 and the edge of the upper peripheral pocket 32 is illustrated as Y2 in Figure 1. In a suitable embodiment, the distance Y2 is desirably greater than the distance Y1 between resealable feature 28 and separation splice 25.
[75] Although the two non-aligned flaps 40, 42 are illustrated in Figures 1-4, it should be understood that at least one flap may be present in pocket 10. For example, in one embodiment, these flaps may have a larger number. than two, like three or more flaps along the transverse direction of the bag. An even or odd number of flaps 40, 42 may be present in the pouch, with the number of flaps on the respective opposite front and back walls 80, 81 being equal to each other or not. Desirably, at least one tab 40, 42 is present on each of the front and rear walls 80, 81. In embodiments with more than two walls, tabs 40, 42 can be present on any number of walls. The defined tabs 40, 42 may have any number of differently shaped profiles, although semicircles are illustrated. Flap profile shapes include, for example, rectangular, triangular, curved, asymmetrical, or a combination of these. The flap-shaped profiles on each of the front and rear walls 80, 81 can be the same or different from each other on each wall or between the walls. The flap profiles can extend along much of the transverse direction of the pouch, or for a short distance along the transverse direction of the pouch. In this regard, these various tab profiles or extended tabs are seen in figures 10, and 12-12D. As mentioned above, one or more of the tabs 40, 42 can have a generally concave configuration (eg, a cutout) without departing from some aspects of the disclosure.
[76] The degree to which tabs 40, 42 are not aligned (or are not centered) between the two walls 80, 81 may vary. For example, tabs 40, 42 can be 100% out of alignment between the two walls, 80, 81, (that there is no Z-direction surface area overlap between tabs on opposite walls), or alternatively, smaller or equal to 90% out of alignment (having a surface area overlap in the Z direction). Desirably, there is an alignment of less than or equal to about 50%, where less than 50% of the opposing flap surface areas overlap in the Z direction. In other suitable embodiments, involving multiple flaps on each of the front and rear walls (not shown ) some of the flaps may be in alignment between the front and rear walls, while others may be out of alignment in the Z direction.
[77] Desirably, in one embodiment, the tabs 40, 42 are semicircular in profile shape and include a distance X3 between neighboring peaks 41, 43, along the transverse direction X3, of between about 1 and 75 mm, plus desirably between about 5 and 30 mm, and even more desirably between about 5 and 20 mm (Figure 3). The X3 distance intervals above apply to the distance between immediately adjacent peaks of 41, 43, on the same wall of a pocket, or between adjacent peaks, opposing two distinct walls (as illustrated). It should also be noted that in a suitable mode, as seen in Figure 3, the heights H of neighboring peaks 41, 43 are the same. In other suitable modalities, the heights of the neighboring peaks 41, 43 are different. In other suitable embodiments, the maximum height of peaks 41, 43 varies on the same wall of a pocket. In yet other suitable embodiments, the peaks 41, 43 of tabs 40, 42 are not centered within the tabs (such that the tabs are asymmetrical in shape). If the adjacent flaps 40, 42 are farther apart along the transverse X direction (along the same wall or between opposite walls), they present a greater challenge for a consumer to visually and tactically find the flaps as a pair to be used together for bag opening. See the distance measurement X4 in Figure 5H, for example.
[78] With reference to Figures 5G and 5H, height H (or amplitude), width W (or frequency), radius R, approach angle α and retreat angle β depend on bag size 10 and types of materials used in the construction of the bag (eg flaps 40, 42 and walls 80, 81). More specifically and in relation to the size of the bag 10, the height H, width W, radius R, approach angle α, and withdrawal angle β depend on the distance between the upper peripheral edge of the bag 32 and the resealable feature 28 (ie, the sum of the Y1 distance and the Y2 distance, as seen in Figure 1). In the context of Figure 5G, it is desirable, in a suitable embodiment, for the height H of the peaks of the flap to be between about 1 and 50 mm, from its base at the separation seam 25 to its highest point. In other suitable embodiments, the height H can be between 5 and 50 mm and more specifically between 7 and 15 mm. In a suitable embodiment, for example, the height H of the peak of the flap may be about 1.3 mm. In another suitable exemplary embodiment, the height H of the peak of the flap may be about 3.2 mm.
[79] As can be seen in Figure 5H, the flaps in one mode have a width W at their base in the transverse direction, from where the raised part of the flap starts to project into the separating seam 25. Desirable in one mode that the width of the base W of the tabs 40, 42 is between about 5 and 75 mm and more desirably between about 5 and 30 mm. In a suitable embodiment, for example, the width of the base W of the flaps 40, 42 is about 11 mm. In another suitable exemplary embodiment, the base width of tabs 40, 42 is about 16 mm. If the width W is too narrow, tab 40, 42 may be more susceptible to being torn off with the removable strip portion 30. Desirably, the distance X4 between the bases of adjacent tabs 40, 42 along the parting seam is about 0 to 50 mm, more desirably about 0 to 20 mm, and even more desirably between an amount greater than 0 and less than about 20 mm. This X4 distance is necessary to prevent tearing depending on the overall size and construction materials of the bag 10. For distances of about 0, such flaps between opposite walls may demonstrate some surface area overlap in the Z direction.
[80] As illustrated in Figure 5G, the approach angle α is defined at the location where the tab 40, 42 begins to project into a generally linear portion of the separation splice 25, and the withdrawal angle β is defined at the location where tab 40, 42 transitions back to the generally linear portion of parting splice 25. In a suitable embodiment, the approach angle α is between about 110 and 160 degrees, and more preferably between about 120 and 150 degrees . In a suitable modality, for example, the approach angle α is about 135 degrees. In other suitable exemplary embodiments, the angle of approach α may be about 132 degrees or about 149 degrees. It is anticipated that the angle of retreat β may be equal to or different from (ie greater or less than) the angle of approach α. For example, as illustrated in Figure 5G, the retreat angle β may be different from the approach angle α.
[81] Referring again to Figure 5G, in a suitable embodiment, each of the tabs 40, 42 has a radius between about 5 and 15 mm. In an exemplary embodiment, each of the tabs 40, 42 has a radius of about 10 mm. It is anticipated that the radius R of the flaps 40, 42 may be uniform (i.e. the same over the entire length of the flap) or may vary along the profile of the flap. In a suitable embodiment, the flaps have a first radius adjacent to the approach angle α and a second radius adjacent to the retreat angle β (Figure 5G) is different from the first radius. In one modality, for example, the first radius is smaller than the second radius. Alternatively, the second radius can be smaller than the first radius.
[82] In one embodiment, the height H is substantially equal to the radius R of the tab 40, 42 on at least a portion of the tab profile. In a suitable embodiment, the height H is substantially equal to the radius R of the flap 40, 42 at a location adjacent to at least one of the approach angle α and the retreat angle β. For example, the height H and the radius of the flap 40, 42, at a location adjacent to at least one of the approach angle α and the retreat angle β can be about 3.2 mm. In another suitable embodiment, the height H is less than the radius R of the tab 40, 42 over at least a part of its profile. In a suitable embodiment, the height is less than the radius R of the tab 40, 42 at a location adjacent to at least one of the approach angle α and the retreat angle β. In one example, the radius R of the tab 40, 42, at a location adjacent to at least one of the approach angle α and the retreat angle β, is at least twice the height H (that is, if a tab 40, 42 has a height H of 3.2 mm, so the radius is 6.4 mm or greater). In another example, the radius R of the flap 40, 42, at a location adjacent to at least one of the approach angle α and the retreat angle β is at least five times the height H (that is, if the flap 40, 42 has a height H of 3.2 mm, so the radius is 16 mm or greater). In another example, the radius R of the tab 40, 42, at a location adjacent to at least one of the approach angle α and the retreat angle β, is at least ten times the height H (ie, if tab 40, 42 has a height H of 3.2 mm, so the radius is 32 mm or greater). In another suitable embodiment, the height H may be greater than the radius R of the flap 40, 42 over at least a part of its profile. In a suitable embodiment, the height H is greater than the radius R of the flap 40, 42 at a location adjacent to at least one of the approach angle α and the retreat angle β.
[83] It is contemplated that flaps 40, 42 of pocket 10 may have any height H, width W, radius R and/or approach angle α without departing from some aspects of this disclosure. Preferably, each of the height H, width W (or frequency), radius R, approach angle α and retreat angle β are selected based on, at least in part, the size and material of the bag 10 to inhibit the tabs 40, 42 to be peeled off with the removable strip part 30.
[84] In some suitable embodiments, the front and rear wall flaps 40, 42, 80, 81 may be of different colors or textures to each other to help facilitate easy opening (visually or tactilely) of the bag once that the removable strip portion 30 has been removed from the pouch conservation portion 20. These colors or textures may be formed as an integral part of walls 80, 81, where flaps 40, 42 extend, or alternatively, such color differences or texture can be the result of a limited application of color or texture, such as by applying a printed design, coating or applying an adhesive decal exclusively on the flap surface area (and not the entire wall from which the flap extends) . In the other suitable embodiment, the front and back walls 80, 81 may be different colors or textures from one another to facilitate easy viewing and opening. In yet another alternative embodiment, the differences in the color or texture of the tabs may be the result of a difference in color or texture, being applied only to the surface facing outwards towards the user of the tabs 40, 42 (or the surfaces inwardly opposite). The outwardly facing user-facing surfaces of the flaps 40, 42 are the surfaces that do not face the opposite walls of the pouch 80, 81.
[85] The separating seams 25 and in particular the individual separating seams 25a, 25b of each front and rear wall 80, 81, respectively, may include perforations or areas weakened by other shapes, embossments or indentations, in order to facilitate tearing, tearing, or opening of the portion of the tamper evident strip 30. These perforations or weakening, for example, can be accomplished by a laser-directed tracing technique, but it is understood that any suitable laser technique can be used. The splicing of perforations or otherwise weakened portions 90 may include a series of dashes (i.e., dash-shaped perforations) along the transverse direction of the pocket 10 (as shown in Figure 1). These dash-shaped perforations or weakened portions 90 may have any number of individual lengths X1 along the transverse direction. Desirably, in a suitable embodiment, each individual length X1 is between about 0.25 and 10 mm, and more desirably between about 0.5 and 3 mm. Dash-shaped perforations have a length dimension that is greater than the width dimension of the drilled part. Essentially, the length dimension along the X direction is greater than the width dimension along the Y direction. These strokes can be uniformly sized (uniform lengths) in the transverse direction, or of different lengths. These perforations or weakened areas 90 can consist entirely of dot-shaped (not shown in Figure 1) rather than dash-shaped perforations (as shown in Figure 1), or a combination of the two (as seen in Figure 5F). In a suitable embodiment, a separation distance X2 from adjacent perforations or weakened areas 90 along the transverse direction (X2) is between about 0.25 and 5 mm, for dash-shaped perforations, and more desirably between about 0.5 and 1 mm (as seen in Figure 1). For dot-shaped perforations (perforations where the length and width dimensions are approximately equal) in one embodiment, the separation distances X2 between adjacent dots is desirably between about 0.1 and 2 mm. The perforations or weakened areas 90 may be spaced evenly across the transverse direction of bag X or be spaced non-uniformly. In a suitable embodiment, individual perforations or weakened areas cross the lateral peripheral edges of the pouch 33, 34 to facilitate easy tearing (as seen in Figure 1), rather than terminating within the peripheral edges. In another suitable embodiment, the individual perforations or weakened areas 90 that make up the split seam 25 are perpendicular to the peripheral edges of the pouch 33, 34, at least at locations immediately adjacent to the peripheral lateral edges of the pouch 33, 34.
[86] Various patterns of perforation or weakened area are contemplated to facilitate the removal or opening of the portion of the tamper evident strip 30 along the separation seam 25. For example, in one embodiment, such perforation or weakened areas 90 are extended over only one part of the periphery of the tab 40. An extended perforation 44 may start at the straight seam areas 25c and extend to the defined tab areas (as seen in Figure 5). In another suitable embodiment, the extended perforation 44 can travel along the periphery of the tab, from one side to the other (as seen in Figure 6). As seen in Figure 5B, this extended perforation 150 may start from a straight portion adjacent and aligned with the separating splice 25 on one side of the tab 40, traverse the periphery of the tab and continue to the other straight portion on the other side of the tab. tab. As can be seen in Figure 5C, this perforation or weakened area, defining tab 40, can be divided into at least two extended areas 151. As can be seen in Figure 5D, the perforated or weakened areas 90 in the straight portions of a splice they may have corner portions 152 that are directed away from the tab 40 to prevent inadvertent tearing of the tab. Corner portions 152 are curved away from the tab. As seen in Figure 5E, the perforated or weakened areas may include extended areas 153 on a straight portion of a seam and smaller areas 154 over tabs 40, 42.
[87] As a result of the propensity of some consumers to tear off the removable strip portions from tamper-evident packages quickly or irregularly, in some embodiments of the described pouch 10, it may be useful to provide a reinforcing material or zoned force element for the flaps. offset 40, 42, or alternatively provide additional additional slot enhancement features for 25 separation splice as previously noted. For example, in one embodiment, the tabs 40, 42 and a region 47 extending from the bottom of the tabs beyond the separating seam 25 in the Y direction have a greater grammage than much of the adjacent walls 80, 81, forming the pouch conservation portion 20. In another embodiment, a reinforcing or treatment liner extends over the flaps 40, 42, towards the lower end of the pouch (in the Y direction) in a particular region 47. In an alternative embodiment Additionally, each tab 40, 42 is reinforced by a gusset decal or other appliqué placed on the tab and a portion of the wall below the split seam along the Y direction. This gusset material or zoned gusset can be added to one side or both sides of tabs 40, 42. In another embodiment, the perforation 25c defining tabs 40, 42 extends from a straight portion of the seam over a larger peripheral edge of tab 40, such as over 25%, desirably , over 50% and more desirable still over 100% of the peripheral edge of the flap (as seen in Figures 5, 5B, 5C, 5F). Desirably, the continuous perforation line around the peripheral edge of the tab begins on the side of tab 40 facing the tear initiation point as an initial tear/break feature 26. In this way, a tear/break will be more easily propagated around the flap, without tearing off the flap in the process of removing the removable strip portion 30.
[88] In some embodiments, parting splice 25 may further include a tear/tear start feature 26, e.g., a perforation adjacent and extending to the side edge 33 or a scalloped perforation, to allow for easy initiation of the slot for removing the strip portion 30 along the parting splice 25. The cut-out perforation may be V-shaped, U-shaped, semi-circular, or any other suitable cutting feature. This tear-initiate feature 26 also serves as a visual indicator to illustrate where the tear should be initiated by the consumer. The tamper-evident pouch strip portions 30 and/or pouch conservation portion 20 may optionally include instructions in the form of words or pictures (such as an arrow) to assist the consumer in opening the pouch or removing the strip portion. .
[89] To facilitate the distribution of a single article 60 from the pouch 10, instructions or indicator drawings 27 may be placed in the pouch, for example, along the length of the pouch 50 and/or at one end of the pouch, such as adjacent to the lower edges of the pouch 35. The placement of such indicators 27 will depend on the desired orientation of the articles 60 in the pouch 10. For example, as can be seen in Figures 1, 4 and 6, the articles 60 (in this case tampons without applicator ) are stored in a horizontal configuration parallel to pouch opening 46 aligned along the transverse direction of pouch X. It is noted that, although tampons are illustrated in the Figures, this pouch can be used to store and distribute any number of articles and, specifically, personal care articles such as tampons with applicator and daily rolled panty protectors (as known in the art). A series of dispensing steps can be visually emphasized on the pouch to assist the consumer in distributing individual items 60 from the pouch. For example, as seen in Figure 1, the consumer can "1" pinch the pouch at a certain point 50 and then "2" hold and push the article upward as desired.
[90] As can be seen in Figure 2, a tear is initiated along the separation seam 25 to begin separating the removable strip portion 30 from the pouch conservation portion 20. As can be seen in Figure 3, the part strip 30 has been completely separated from the pocket conservation portion 20, exposing the offset, offset, or staggered flaps 40, 42. In a suitable embodiment, the separating splice 25 has a tear strength less than the tear strength of the bag 10. As can be easily appreciated, the bag 10 has a tear strength in the longitudinal direction Y and in the transverse direction X. The tear strength of the bag 10 in the longitudinal direction Y can be equal to, greater than or less than the tear strength. of the pocket in the transverse direction X. Appropriately, the tear strength of the separating splice 25 is sufficiently less than the tear strength of the bag 10 in the longitudinal direction Y and in the transverse direction X to inhibit other parts of the pouch (e.g., flaps 40, 42) from being torn during removal of the removable strip portion 30. In a suitable embodiment, the tear strength of the separating seam 25 is less than the smaller tear strength of the pouch in the longitudinal direction. Y or in the transverse X direction by at least 1% and about at least 5% and more appropriately by about 25%. The tear strength of the split seam 25, however, should be sufficient to protect the integrity of the pouch 10 until it is the consumer's desire to purposefully tear the removable strip portion 30 of the pouch 10 along the split seam 25. Suitable methods for Tear strength tests include, but are not limited to, ASTM Standard Test method D1424-96 for Tear Strength of Tissues by Pendulum (Elmendorf) Apparatus and ASTM D 1922, Standard Test method for Propagation of Tear Resistance of plastic film and thin covering by the pendulum method. It is contemplated that other suitable test methods could be used.
[91] In a suitable embodiment, the tear strength of the separation splice 25 may vary along its length. In such an embodiment, the parting splice 25 is weaker (i.e., its tear strength is lower) at or adjacent to the part of the parting splice that projects from the linear portion to define tab 40, 42. In other words, the parting seam portions 25 which also define the approach angle α or the withdrawal angle β are the weaker parts of the parting seam 25 to inhibit the flaps 40, 42 from being torn during removal of the strippable portion. Relative weakening of the dividing seam 25 can be accomplished by, for example, increasing the length of the cutout portions, perforating, or by making a deep cut in the z-direction of the pouch, if a line of weakness is used. In a suitable embodiment, the parting seam portions 25 which also define the approach angle α or the withdrawal angle β are at least twice as weak as the linear portion of the parting seam. In another suitable embodiment, the parting seam portions 25 which also define the approach angle α or the withdrawal angle β are at least three times weaker than the linear portion of the parting seam. In another suitable embodiment, the parting seam portions 25 which also define the approach angle α or the withdrawal angle β are at least five times weaker than the linear portion of the parting seam.
[92] As can be seen in Figure 4, the resealable feature 28, in this case the airtight interlocking structures, has been separated, allowing the removal of one or more articles 60, such as the individually illustrated applicator-free tampons. Once resealable resource 28 is opened by separating tabs 40, 42, such articles 60 are desirably dispensed from pouch 10 by squeezing the pouch at one of several pinch points 50 indicated by pinch indicators on tab 27 using thumb and forefinger in the portion of the front and back walls 80, 81, of the pouch. If one or more articles 60 were previously removed through the pouch opening 46, then the same squeezing technique would be applied to pouch 10, accompanied by a pinch/drag or finger-push movement towards the pouch opening. This pinch and pinch/drag or push motion is illustrated in Figure 7. As illustrated in Figure 8, if the stored articles 60 are packed in the length direction of the pouch 10, the push guide indicators 27 can be positioned (in words or symbols) on the bottom wall of the pouch 36 or along the front and back walls 80, 81, to guide the consumer as to how to retrieve one item at a time. Once an article 60 is dispensed, the resealable resource can be resealed for the supply of individual articles at a later time. Tabs 40, 42 can be used repeatedly to aid in opening the resealable feature 28. In a suitable embodiment, the resealable feature 28 requires an operating force of between about 3 and 10 Newtons to open the resealable feature. In the illustrated embodiment, for example, an operating force of between about 3 and 10 Newtons is required to disengage the airtight closure.
[93] Another suitable embodiment of the pouch 400 is illustrated in Figure 10. As can be seen, the pouch 400 includes a resealable feature 28 and staggered, multi-peaked splices 410, 412, on each of the front and rear walls 80, 81 of the bag with two walls. The upper peripheral edge of the pouch can be sealed before or after creating the seams 410, 412.
[94] In another suitable embodiment, as seen in Figure 11-11E, rather than including the removable strip portion 30 immediately adjacent to the resealable feature 28, a pouch 500 includes a tamper-evident openable strip portion 502 that it is not necessarily removed. This strip portion 502 includes two walls (as with designs described above) that are eventually sealed at their upper and peripheral edge, but includes a perforated or weakened seam 503 along or adjacent to the upper edge of the pouch. Seam 503 includes straight portions 509 and a curved portion 512 separated by junctures 510. Perforation or weakened seam 503 defines at least a single foldable tab 504, which is an extension of one of the walls that folds along another wall. As in previous embodiments, tab 504 may be wall-integrated or a non-wall-integrated fixture. A cutout area 505 (as seen in Figure 11B) is optionally present on the other wall. As foldable flap 504 is opened along fold line 511 (by snapping the weakened or perforated areas of the flap with a finger), flap 504 is gripped and lifted away from the underlying wall. The fingers are used to pull tab 504 away from the underlying wall along curved portion 512 of seam 503, thereby separating the remaining perforated or weakened seams 503 as in straight portion 509. This separation allows separation of the resealable features 28 and the eventual dispensing of an article contained within the pouch through the pouch opening 46. The tamper-evident strip portion 502 includes lateral peripheral edges 517 that are sealed adjacent to the resealable feature 28. In one embodiment, this tamper-evident strip portion 502 is made of a single flat sheet that has been folded to create the edge of the pouch and then perforated or weakened along the perforated or weakened seam 503. In another suitable embodiment, two separate flat sheets are used to create the walls of the pouch. In another suitable embodiment of this folded flap design, the tamper evident strip portion 502 is perforated along the side edges 517 to allow the tamper evident strip portion 502 to be opened on three sides. In another embodiment, the tamper-evident strip portion 502 may be opened along the side edges 517 to the resealable feature 28, as illustrated in Figure 11E.
[95] In yet another suitable embodiment, as seen in Figures 12-12D, a pouch 600 includes a series of perforated or weakened seams 602, 604 located between the top edge of the sealed pouch 606 and a resealable feature 28. series of splices 602, 604 defines at least two offset flaps 40, 42 and can be created by piercing or weakening the pouch on one side only or on both sides. In some embodiments, especially when seams 602, 604 are formed on both walls from one side only, both seams are on each of walls 80, 81, i.e. both seams, 602, 604 are on the wall. front 80 and both seams 602, 604 are on rear wall 81, even though only one seam is intended to be opened. To prevent a seam from being unintentionally opened during separation of the removable portion of the tamper evident strip and opening of the pouch, an adhesive decal 608 is placed on the external surfaces of the pouch, or of the internally opposed surfaces, over the seams, 602, 604 that are not intended to be opened. At least one decal adhesive 608 is placed on each wall, 80, 81 of the pouch 600 in the removable strip portion, thereby allowing the tabs 40, 42 to be separated when pulled on opposite sides, since the removable strip portion has been removed along seams 602, 604. In operating this embodiment, the strip portion above the perforated or weakened seams in the Y direction is torn free. The front wall decal 608 and front wall flap 40 remain on the front wall 80 of the bag 600. The rear wall decal 608 and the rear wall flap 42 remain on the rear wall 81 of the bag 600. Placing the decals of 608 voids the effect of unused perforations or weakened areas in walls (especially when perforations or weakened areas are created in both walls on the side of one wall only). When viewed from the sides of the reverse flap, the rear perforation line is visible on the front wall 80 of the pouch. The front perforation line is visible on the rear wall 81 of the pouch. The tabs 40, 42 are held together in part because of the 608 adhesive decals. The combination of offset perforated tabs 40, 42 and 608 decals provide easy-open features with improved visibility, grip and strength (as a result of applying the decals) to use in separating resealable features 28 to create an opening 46.
[96] Bags with offset flaps (as described below) can be made by various production methods. For example, in the method for proper production as illustrated in figures 13A-13G, a flat sheet material having opposite seams and resealable features is produced along the machine direction. Figure 13B, 13D, and 13F illustrate various production steps in the longitudinal direction, with figures 13A, 13C and 13E illustrating the cross machine direction views of respective Figures 13B, 13D and 13F. As can be seen in Fig. 13B, the generally opposing flaps 40, 42 created by perforations or weakened areas in parting seams 25 are offset from one another (not centered to each other) along the machine direction. The 650 flat stock includes resealable features 28 that are affixed to the sheets in the machine direction. The flat material 650 is folded into fold lines 655 such that a pocket bottom is created. The flat material is optionally folded in a second step and the walls bonded so that the resealable features 28 are aligned (such as the hermetic closure of a resealable feature by interlock 28). The straight portions of the individual separating seams 25a, 25b are similarly aligned and the pocket is cut in the cross machine direction so that the non-centered flaps 40, 42 are cut areas. The pouch is sealed at its resealable feature 28 and its side edges and upper side edge (created in the side edge cutting step). Items can be loaded into pouches prior to sealing.
[97] In another suitable production method, which is illustrated in Figure 14A-14K, a bag 700 is produced in machine direction using a vacuum device 800 for flap compensation in a pre-formed bag with resealable features. The bag-like tubular structure 700 with open ends and sealed side edges is fed in the machine direction by a double-sided vacuum device 800, as seen in Figure 14A. Vacuum device 800 includes a top and bottom. The vacuum device 800 advances against the bag-like tubular structure surfaces as seen in Figure 14B. Following the approach to the surfaces of the bag-like structure, the vacuum device retracts and pulls the bag-like structure 700 to an open position as seen in Figure 14C. During retraction of the vacuum device 800, the width of the bag-like structure 700 decreases in the cross-machine direction. After this step, the upper and lower vacuum portions of the device advance towards each other, in opposite directions, so as to tilt the bag-like structure 700 on its side. This movement causes the top and bottom surfaces of the bag-like structure 700 to move in opposite directions and the surfaces to move closer together. The distance that the vacuum device 800 travels to each side is equal to the desired displacement of the flaps 40, 42 in the bag (the separation distance between the flaps in the bag). At this point, as seen in Figure 14F, the slanted pouch-like structure 700 is pierced or otherwise weakened through both walls on one side to create a separation seam 25 that penetrates through both wall layers. and sets tabs 40, 42. Tabs 40, 42 are fully aligned along the direction of several machines, as seen in Figure 14G. Then, the vacuum device 800 separates and moves the bag-like structure 700 or the vacuum device slides the bag-like structure laterally and returns to its original orientation as seen in Figure 14I and J. At this point, as seen in Figure 14K, the pouch-like structure 700 includes the offset perforated tabs 40, 42 in a breakaway seam 25. The pouch-like structure 700 can be cut and sealed at least partially as a pouch. The products can then be loaded into the partially sealed pouch 700. A resealable feature can be provided with the pouch structure 700 prior to piercing, or alternatively at a later stage.
[98] As can be seen in Figure 15, in an appropriate production method, the seams of two portions of the pouch 400 illustrated in Figure 10, can be perforated separately, while a barrier plate 415 is used to separate the two walls 80, 81, one from the other. The two separating seams 410 and 412 could have different paths on each wall to create off-center tabs along the full transverse direction of the pocket. Separation splices 410, 412 join in the Z direction into an optional tear start feature 26, in this embodiment a semi-circular cutout, which can be used to start tear or tear along the splices. The barrier plate 415 would not necessarily be needed to create perforations if a laser trace perforation method is employed. Staggered, multi-pegged splices 410, 412 are created by inserting the barrier plate 415 into the pouch while the upper peripheral edge is unsealed and then piercing or weakening the opposing pouch walls 80, 81 along patterned staggered splices. Barrier plate 415 prevents perforation of one wall from penetrating the opposite wall when using traditional perforation techniques. Although not illustrated, a perforation device can be placed in the position of the barrier plate to provide independent wall perforations for each opposite wall. An anvil-like device can then compress the pouch to create independent perforation patterns on each wall of the pouch, with the independent perforation patterns including off-center flaps.
[99] It is observed that in several of the methods described, the order of steps in bag production can be changed. For example, the steps of sealing a resealable feature 28, sealing the peripheral edges of the pouch, cutting flat sheet materials from the pouch, loading the articles 60, and perforating/weakening the separation seam 25 can be moved in a method to accommodate the placement of machines along a production line.
[100] As mentioned above, the parting splice 25 and in particular the individual parting splices 25a, 25b of each front and back wall 80, 81 respectively can be formed using a laser directed tracing technique. Figures 16-18 illustrate a production method suitable for forming pouches in accordance with this disclosure, in which a laser-directed tracing technique is used to form at least one of the individual separating splices 25a, 25b. For illustrative purposes only, the plurality of pouches 10 of Figures 5 and 5A are illustrated being formed in Figures 16-18.
[101] As illustrated schematically in Figure 16, a continuous net 902 suitable for constructing a plurality of pouches 10 is fed to a suitable supply roller 904 (or other suitable net source, including in-line fabrication of the net). As explained above, the material of the pouches of 10 and thus the continuous web 902 can be any suitable material including monolayer or multilayer films. In the illustrated embodiment, continuous network 902 is a multilayer film, having a first layer 906 and a second layer 908 bonded to the first layer (Figure 18). In a suitable embodiment, first layer 906 is adhesively bonded to second layer 908, but it is contemplated that the first and second layers may be bonded using any suitable bonding technique. In the illustrated embodiment, the first layer 906 is adapted to define the outer surface of the pouch 10 and the second layer 908 is adapted to define the inner surface of the pouch. More specifically, in the embodiment illustrated in Figures 16-18, first layer 906 is about 0.018mm thick and second layer 908 is about 0.062mm thick. Thus, the illustrated laminate (or continuous mesh 902) has a total thickness of about 0.08 mm (± 8%). It is understood that the first and second layers 906, 908 can include any suitable materials and have any suitable thicknesses. For example, in one embodiment, one of the layers can be an oriented polypropylene (OPP) and the other layer can be a low density polyethylene (LDPE).
[102] As seen in Figure 17, various print elements 910 arranged on continuous network 902 are easily visible when the first layer 906 is viewed by the consumer (or user). In the embodiment illustrated in Figure 17, the print elements 910 include various patterns, graphics and symbols (e.g., notices, instructions for use, sku and bar code numbers, brand advertisement). It is contemplated that print elements 910 may include any print suitable for pouch 10 containing absorbent articles 60. In a suitable embodiment, print elements 910 are located on the inner surface (i.e., one of the glued surfaces as seen in the Figure 18) of at least one of the first and second layers 906, 908 and the first layer is generally transparent or translucent enough that the print is readily visible to the consumer through the first layer. It is contemplated, however, that in other suitable embodiments, the printable elements 910 may be located on the outer surface of the first layer 906. In addition, images or orientations (not shown in Figure 17) may be disposed on the resealable features 28 adjacent to continuous network 902 to assist user in resealing pouch 10. In a suitable modality, resealable resource 28 may be made of LDPE. It is understood, however, that any suitable material that is compatible with the material of the pouch 10 may be used to make the resealable resource 28. It is further understood that the resealable resource 28 may have any appropriate configuration, including, by example, multiple bands, multiple strengths, multiple flange heights, multiple weights, and multiple colors.
[103] Referring again to Figure 16, continuous mesh 902 is fed from supply roller 904 to a laser station 912 forming at least one of the individual separation seams 25a, 25b on the front and rear walls 80 81 of pocket 10. In the illustrated embodiment, laser station 912 is adapted to form the two separating splices 25a, 25b. As mentioned above, the split seams 25a, 25b can include perforations, weakened areas and combinations of the two. The method described in Figures 1618 illustrates the formation of weakened areas in the continuous network 902 in the form of a continuous weakened line, but it is understood that the method can be used to form the perforations, including perforated lines, perforated lines and/or dots perforated or both perforations and weakened areas.
[104] A pair of lasers 914 (a laser being seen in Figure 18) directs (or focuses) a laser beam 917 on the first layer 906 of continuous mesh 902 to melt the first layer and thus form a "cut" through the first layer. In a suitable embodiment, first layer 906 has a melting point lower than the melting point of second layer 908. As a result, lasers 914 can be selectively set to melt and thus cut through first layer 906 without melting /cut second layer 908. Lasers 914 (only one of the lasers being illustrated in Figure 18) are configured to completely cut first layer 906. Second layer 908, in this embodiment, is not cut or otherwise affected by lasers 914 It is understood, however, that the second layer 908 could be cut by the lasers 914 and the first layer 906 could be unaffected by the lasers. It is further understood that the lasers 914 can be selectively controlled to cut any desired thickness of the continuous web 902. It is also understood that the laser can be selectively controlled to control the width of the cut. Thus, the cut can be any suitable width.
[105] Referring again to Figure 17, which is a top display plane of the continuous network 902 exiting the laser station 912, the continuous network comprises a plurality of interconnected pockets 10 being fed in the cross machine direction. It is contemplated, however, that the interconnected pouches 10 could be fed from the supply roll 904 in the machine direction. As illustrated in Figure 17, one of the pair of lasers 914 forms the parting splices 25a and the associated tab 40 on the front wall 80, and the other laser forms the parting splice 25b and the associated tab 42 of the back wall 81. In the illustrated embodiment, both lasers of laser pair 914 operate simultaneously and follow the same cutting path. That is, the lasers 914 follow identical paths so that the parting splices 25a and the associated tab 40 on the front wall 80 are the same as the parting splice 25b and the associated tab 42 of the rear wall portion 81, as shown in Figure 17. It is contemplated that a single laser can be used to form both of the two separating splices 25a, 25b by passing the continuous network 902 through the laser twice. It is further contemplated that the separating splices 25a, 25b and/or the tabs 40, 42 may have different configurations.
[106] Referring again to Figure 16, continuous mesh 902 moves from laser station 912 to a cutting station 916 where the continuous mesh is cut in the cross-machine direction to separate the mesh into discrete segments 918. cutting station 916 may include any suitable cutting apparatus (e.g., a knife and an anvil). It is contemplated that cutting station 916 could be located before laser station 912 so that pair of lasers 914 would act on discrete segments 918. It is further contemplated that discrete segments 918 may be directed to the laser station 912 from a suitable source, thereby eliminating the continuous network 902 and the need for a cutting station 916.
[107] In the illustrated embodiment, the discrete segments 918 are transferred from the cutting station 916 to the fill, fold and seal station 919 where the discrete segments 918 are folded into the desired pouch shape, at least one of the items 60 is placed inside the pouch 10 and the edges of the pouches are sealed to store the article in it. As mentioned above, with respect to the pouch modality of Figures 5 and 5A, eight tampons without applicator are placed within pouch 10. From the fill, fold and seal station 919, a plurality of pouches 10 containing at least one of the items 60 may be boxed (or otherwise packaged) for shipping.
[108] It is envisioned that the laser station 912 can be arranged in any suitable position during the manufacturing process of the pouches 10, including after the cutting station, so that the separating splices 25a, 25b are formed in the discrete segments 918, or after the filling, folding and sealing station, so that the separating seams 25a, 25b are formed in the sealed pouches 10.
[109] Figure 19 is a photograph of a portion of a discrete segment 918 having the separating splice 25a and associated tab 40 formed therein using a laser directed tracing technique. In this embodiment, separation splice 25a is defined by a plurality of generally circular perforations (i.e., puncture points) that extend entirely through the thickness of discrete segment 918. Figure 20 is a photograph of a portion of a discrete segment 918 having the parting splice 25b and associated tab 42 formed therein using a laser directed tracing technique. In this embodiment, separation seam 25b is defined by a continuous line of weakness that extends through an appropriate portion of the thickness of discrete segment 918. As can be easily seen in Figure 20, printing elements 910, such as the printed background and black lines, extending over the background, arranged in segment 918 are at least partially removed (or otherwise altered) during the laser cutting process and therefore act as a visual cue to the consumer. As a result, the split seam 25b is easily noticeable to the consumer.
[110] It is envisioned that the laser can be used to cut the outer surface of the bag 10, as seen in Figures 16-20, or the inner surface of the bag. A potential advantage of cutting a line of weakness in the inner surface of the pouch 10 to define the separating seams 25a, 25b and the associated flaps 40, 42 is that the exterior of the pouch remains unaffected and therefore appears to be fully sealed to the consumer.
[111] Figure 21 shows several suitable cut patterns 920 for forming the separating splices 25a and 25b and the associated tabs 40, 42, with a directed laser tracing technique. Appropriate targeted laser tracing techniques are disclosed in the article by William R. Dinauer et al., entitled CO2 Lasers for Flexible Food Packaging, www.laser-journal.de, pages 45 and 46, published January 2008; and an article by David Hennig entitled Scoring Big with Lasers: Lasers and Packaging Technology, published in the January 2001 issue of Flexible Packaging Magazine. Both of these articles are incorporated into this document by reference. The lasers 914 of laser station 912 can follow the various patterns 920 to form the separating splices 25a, 25b. Advantageously, the precision of the described laser tracing technique allows the use of an unlimited number of patterns to precisely form the separating splices 25a, 25b and associated flaps 40, 42; thus, the laser tracing technique is not limited to the use of patterns 920 shown in Figure 21. Patterns 920 provide for lasers 914 to form the separating splices 25a, 25b having faded continuous lines, perforated lines, perforated extended lines, dashes perforated curves, perforated points, other appropriate weakened areas and combinations of these. The separating splices 25a, 25b formed by the following patterns 920 may have combinations of straight portions, curved portions and slanted portions and define tabs 40, 42 having various geometric shapes, e.g., tabs with polygonal shapes, circular shapes and triangular shapes . In addition, some 920 patterns have variable widths along their length, so lasers 914 following those 920 patterns will form the split seams 25a, 25b having different widths along their length. Some patterns 920 also allow lasers 914 to form the individual separating splices 25a, 25b so that each define multiple tabs 40, 42. It is envisioned that laser station 912 may include any appropriate type and number of lasers 914 and associated equipment, including but not limited to mirrors, pointers and optics. For example, suitable lasers and laser stations are described in US Patent Application Publication No. 2003/0047695 entitled "System and Method for Synchronizing a Laser Beam to a Moving Web" to Zik et al and US Patent No. 5,630. 308, entitled "Laser Scoring of Packaging Substrates" to Guckenberger, both of which are incorporated herein by reference.
[112] Some of the 920 patterns seen in Figure 21 have peaks 922 and valleys 924, which advantageously allow the formation of separating splices 25a, 25b defining the valleys adjacent to the flaps 40, 42. The adjacent valleys make the flaps 40, 42 more identifiable and allow the user to more easily grip the tabs. However, in other suitable embodiments, the patterns may only include peaks to form the split seams 25a, 25b that define the tabs 40, 42, without associated valleys, or include peaks with several adjacent valleys to form the separation seams 25a, 25b that define tabs with several associated valleys, for example, a tab with a valley on each side.
[113] The various 920 patterns allow a manufacturer to select desired designs to form the parting splices 25a, 25b and the tabs 40, 42. For example, the manufacturer can select one of the 920 patterns that provides for the formation of a parting splice 25a, 25b with only straight and slanted portions to simplify the manufacturing process. Alternatively, the manufacturer can select one of the patterns 920 which provides for the formation of a separating seam 25a, 25b with curved portions to produce tabs 40, 42 that are aesthetically pleasing and prevent tearing of corner stress points.
[114] As various changes can be made to the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense.
[115] This written description uses examples to disclose the invention, including the best mode and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The scope of the patentable invention is defined by the claims and may include other examples conceived by those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal statement of the claims, or if they include equivalent structural elements with insubstantial differences from the literal statement of the claims.
[116] By introducing the elements of the present invention or preferred embodiments thereof, the articles "a", "the", "the" and "referred to" are intended to indicate that there is one or more of the elements. The terms "comprising", "including" and "having" are intended to be inclusive and mean that there may be additional elements other than those listed.

权利要求:
Claims (13)
[0001]
1. Method for forming a resealable and tamper-evident pouch (10) for storing at least one absorbent article (60), characterized in that it comprises: moving a planar substrate in a machine direction, the planar substrate having two edges opposites; attaching a first deployable feature to the substrate, generally adjacent to one of the edges; attaching a second deployable feature to the substrate in a relationship away from the first deployable feature and generally adjacent to another edge, the first and second deployable feature (28) being configured to sealably mate; form a first separating splice (25a) on the substrate between the first resealable feature and the respective edge of the substrate, the first separating splice (25a) defining a first tab (40); second separating splice (25b) on the substrate between the second resealable feature and its edge, so that the first and second separating splice (25a, 25b) are generally at the same distance from the respective first and second resealable features (28), the second separating splice (25b) defining a second tab (42), the second tab (42) being displaced from the first tab (40); at least one absorbent article (60) in contact with the substrate; folding and sealing the substrate to define the resealable and tamper-evident pouch (10) with at least one absorbent article (60) included therein.
[0002]
2. Method according to claim 1, characterized in that the formation of at least one and preferably both of the first and second separation splices (25a, 25b) comprises the formation of a separation splice (25) using a laser-directed tracing technique in which at least one laser is used to cut the substrate.
[0003]
3. Method according to claim 2, characterized in that the laser directed tracing technique comprises a pair of lasers (914) and both the first (25a) and second (25b) separation splice are formed simultaneously by lasers (914).
[0004]
4. Method for forming a plurality of resealable and tamper-evident pouches (10) for storing absorbent articles (60) therein, the method characterized in that it comprises: directing, in the machine direction, a continuous net (902) comprising a plurality of interconnected segments suitable for constructing a plurality of pockets (10), the plurality of segments being interconnected in the cross-machine direction; attaching a first re-enrollable resource to the continuous network (902); ) in relation away from the first resealable feature; form at least one continuous separation splice in the network using a laser to at least one separation splice extending through the plurality of interconnected segments and defining at least one tab ( 40) in each of the segments; cutting the continuous network (902) in the cross-machine direction, separating the plurality of interconnected segments of the network to form a plurality of discrete segments (918); associating at least one absorbent article (60) with each discrete segment (918); e-fold and seal each of the discrete segments (918) to store at least one absorbent article (60).
[0005]
5. Method according to claim 4, characterized in that forming at least one continuous separation splice in the network (902) comprises forming two spaced apart splices (25a, 25b) using a pair of lasers (914), each laser forming a different splice, where each of the lasers defines a cut path, the cut path of both lasers (914) being the same.
[0006]
6. Method according to claim 4, characterized in that the continuous network (902) comprises a laminate with the first (906) and the second (908) layer, wherein the formation of at least one splice Continuous separation comprises cutting the first layer (906) from the mesh (902) using the laser to melt the first layer (906).
[0007]
7. Method according to claim 6, characterized in that at least one flap in each of the segments comprises a bent flap structure (504).
[0008]
8. Method according to claim 7, characterized in that folding and sealing each of the discrete segments (918) comprises coupling the first and second resealable feature (28).
[0009]
9. Method according to claim 7, characterized in that folding and sealing each of the discrete segments (918) comprises folding each of the discrete segments (918) generally in half to form a front wall (80) and a rear wall (81) of the pouch (10), wherein folding and sealing each of the discrete segments (918) comprises joining at least a portion of the front wall (80) to at least a portion of the rear wall (81 ) to form the preservation portion (20) of the pouch (10).
[0010]
10. Method according to any of the preceding claims, characterized in that the pair of resealable features (28) is selected from a group consisting of interlocking hermetic closure structures, adhesive strips, hook and loop structures, materials with varying coefficients of friction and zipper-like features.
[0011]
11. Method according to any one of the preceding claims, characterized in that the separation splices are selected from a group consisting of perforations, weakened areas and combinations of the two.
[0012]
12. Method according to any one of the preceding claims, characterized in that it further comprises supporting the flaps (40, 42) with a reinforcing agent selected from a group consisting of a reinforcing coating, additional grammage of forming material of flap and adhesives produced with reinforcement material.
[0013]
13. Method according to claim 11, characterized in that the separating splices are provided by perforations and the flaps (40, 42) are defined by one or more extended perforations that run along at least a part of the periphery of the flaps ( 40, 42)

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同族专利:

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公开号 | 公开日

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CN105473459A|2016-04-06|

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MX2016002402A|2016-05-31|

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EP3038938B1|2018-10-17|

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AU2014312082A1|2016-03-24|

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EP3038938A4|2017-03-08|

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EP3038938A1|2016-07-06|

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BR112016004110A2|2017-08-01|

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AU2014312082B2|2017-10-05|

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TWI620692B|2018-04-11|

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US20160167860A1|2016-06-16|

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TW201529429A|2015-08-01|

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CN105473459B|2019-04-26|

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法律状态:
2018-11-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-01-21| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-06-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2021-07-27| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/08/2014, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US201361872148P| true| 2013-08-30|2013-08-30|

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US61/872,148|2013-08-30|

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PCT/US2014/053504|WO2015031811A1|2013-08-30|2014-08-29|Tamper resistant package and methods of making same|

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