• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    COMPRESSIBLE DISPENSING METHOD AND PACKAGE. A first fluid dispensing container is provided. The container includes a container body formed from a first flexible material defining an inner cavity. The container includes a membrane formed of a second flexible material and a seal coupling the membrane to the inner surface of the container body. The membrane divides the inner cavity into a content chamber and a dispensing chamber, and the membrane and seal are configured to be fluid tight to maintain fluid in the content chamber before the membrane ruptures. The rupture stress of the second flexible material is less than the rupture stress of the first flexible material in such a way that, as the pressure fluid in the content chamber increases, the membrane is configured to rupture without the container body breaking.
    公开号:BR112015014867B1
    申请号:R112015014867-0
    申请日:2013-05-15
    公开日:2021-01-05
    发明作者:Bill Nathan
    申请人:Maxpax Llc；
    IPC主号:
    专利说明:

    REFERENCE REFERENCE TO RELATED PATENT APPLICATION
    [001] The present application claims the benefit of US patent application no. 13 / 725,465 deposited on December 21, 2012, which is incorporated here for reference in full. BACKGROUND OF THE INVENTION
    [002] The present invention relates in general to the field of containers. The present invention relates specifically to a container with a ruptible inner membrane. SUMMARY OF THE INVENTION
    [003] One embodiment of the invention relates to a heat sealed compressible dispensing pouch. The pouch includes an outer sheet having a front wall, a rear wall and a folded edge located between the front wall and the rear wall. The outer sheet is folded along the folded edge such that an inner surface of the front wall faces an inner surface of the rear wall. The pouch includes a first heat seal coupling the inner surface of a peripheral section of the front wall to a peripheral section of the inner surface of the rear wall such that the inner surfaces of the front and rear walls define an inner chamber. The pouch includes a rupturable inner membrane formed of a single, contiguous layer of thermoplastic material, and the rupturable inner membrane is located in the inner chamber. The breakable inner membrane divides the inner chamber into a content compartment and a dispensing channel. The first heat seal defines an edge of the content compartment and the folded edge defines an edge of the dispensing channel. A second heat seal couples the internal breakable membrane to the inner surface of the front wall, and a third heat seal couples the internal breakable membrane to the inner surface of the back wall. A marking line formed on the front and rear walls located between the folded edge and the ruptured inner membrane, and the marking line is configured in such a way that the portion of the outer sheet between the marking line and the folded edge can be removed to create a dispense opening in the dispense channel. The ruptured inner membrane is configured to break when the pressure in the content compartment is greater than a burst threshold, and the first, second and third heat seals are configured to remain sealed when the inner membrane breaks.
    [004] Another embodiment of the invention relates to a fluid dispensing container. The container includes a container body formed from a first flexible material, and the container body includes an outer surface, an inner surface, a filling end and a dispensing end. The inner surface of the container body defines an inner cavity. The container includes a membrane formed from a second flexible material and a seal coupling the membrane to the inner surface of the container body in a position located between the filling end and the dispensing end. The membrane divides the inner cavity into a content chamber and a dispensing chamber, and the membrane and seal are configured to be fluid tight to maintain fluid in the content chamber before the membrane ruptures. The rupture stress of the second flexible material is less than the rupture stress of the first flexible material such that, as the fluid pressure in the content chamber increases, the membrane is configured to rupture without rupture of the container body. .
    [005] Another embodiment of the invention relates to a method of forming a container. The method includes the step of providing a first sheet of the first flexible material and a second sheet of the second flexible material. The method includes the step of folding the first sheet by creating a folded edge that divides the first sheet into a front wall and a back wall. The front wall and the rear wall individually have an upper edge opposite the folded edge. The method includes the step of positioning the second sheet between the front wall and the rear wall of the first folded sheet. The method includes the step of creating a first heat seal by attaching a front surface of the second sheet to an internal surface of the front wall of the first sheet. The method includes the step of creating a second heat seal by attaching a rear surface of the second sheet to an internal surface of the back wall of the first sheet and the step of creating a third heat seal by attaching a left side of the front wall to a left side the back wall to seal the left side of the container. The method includes the step of creating a fourth heat seal by attaching a right side of the front wall to a right side of the rear wall to seal the right side of the container. The method includes the step of filling the container through a filling opening defined by the upper edges of the front and rear walls of the first sheet. The method includes the step of creating a fifth heat seal by fixing the top edge of the front wall to the top edge of the back wall by sealing the filling opening.
    [006] Alternative exemplary modalities refer to other characteristics and combinations of characteristics as can be generically mentioned in the claims. BRIEF DESCRIPTION OF THE DRAWINGS
    [007] This request will become more fully understood from the following detailed description, taken in combination with the attached figures, in which similar reference numerals refer to similar elements in which: Figure 1 is a perspective view of a dispensing scholarship according to an exemplary modality.
    [008] Figure 2 is a perspective view of a dispensing pouch including an extended spout according to an exemplary embodiment.
    [009] Figure 3 is a side elevation view of the dispensing pouch of figure 1 according to an exemplary embodiment.
    [010] Figure 4 is a cross-sectional view of the bag in Figure 1 taken along line 4-4 shown in Figure 3 according to an exemplary embodiment.
    [011] Figure 5A is a cross-sectional view of the bag in Figure 1 taken along line 5A-5A shown in Figure 3 according to an exemplary embodiment.
    [012] Figure 5B is a cross-sectional view of the bag in Figure 1 taken along line 5B-5B shown in Figure 3 according to an exemplary embodiment.
    [013] Figure 6 is a detailed view of a portion of Figure 4 representing a heat seal according to an exemplary embodiment.
    [014] Figure 7A is a cross-sectional view of a dispensing pouch after opening the dispensing passage according to an exemplary embodiment.
    [015] Figure 7B is a cross-sectional view of a dispensing pouch after rupture of the inner membrane according to an exemplary embodiment.
    [016] Figure 7C is a detailed view of a portion of the dispensing pouch of figure 7B showing rupture of the inner membrane according to an exemplary embodiment.
    [017] Figures 8A-8F show the formation of a dispensing bag according to an exemplary modality.
    [018] Figures 9A and 9B show the formation of a dispensing pouch including an extended spout according to an exemplary embodiment. DETAILED DESCRIPTION
    [019] With general reference to the figures, various modalities of a dispensing container are shown. In general, the various embodiments of the container include an outer container body or side wall and an inner wall or membrane that is located in the container body. The membrane separates the inner cavity of the container into two portions or subsections, a content compartment and a dispensing passage. Container contents, for example, liquid or fluid contents are stored in the content compartment prior to use of the container. When the container is to be opened, the user creates an opening in the portion of the container body defining the dispensing passage. At that point, the fluid content of the container is held in the content chamber by the membrane. To dispense the fluid, pressure in the content chamber is increased, for example, by compressing the portion of the outer container body over the content chamber. When the pressure reaches the rupture voltage of the membrane, the membrane ruptures allowing the contents of the container to flow from the content chamber into the dispensing passage and out through the opening. The membrane material is selected to be weaker than the material of the outer container body and weaker than the membrane attachment points in such a way that the membrane will break while the outer container body and attachment points (for example , heat seals) remain intact, providing controlled fluid dispensing from the container.
    [020] With reference to figure 1, a dispensing container, shown as a fluid dispensing bag 10, is shown according to an exemplary embodiment. The dispensing bag 10 includes a container body, shown as body 12. In general, the body 12 includes a wall or front portion 14 and a wall or rear portion 16 opposite the front wall 14. Bag 10 includes a filling end , shown with upper end 18, and a dispensing end, shown as lower end 20. As explained in detail below, the upper end 18 is opened before being sealed allowing the pouch 10 to be filled, and the lower end 20 is opened by the user in such a way that fluid can be dispensed from bag 10 at the time of use.
    [021] In the embodiment shown, the body 12 is formed of a flexible material such that the bag 10 is a flexible or compressible container. In this embodiment, the front wall 14 is attached to the rear wall 16 by one or more seals or fastenings formed between the peripheral sections of the front wall 14 and the opposite peripheral sections of the rear wall 16. Specifically, the pouch 10 includes a side heat seal left 22, a right side heat seal 24 and an upper heat seal 26. The left side heat seal 22 couples the left side edge of the front wall 14 to the left side edge of the rear wall 16. The right side heat seal 24 couples the right side edge of the front wall 14 to the right side edge of the back wall 16. The top heat seal 26 couples the top edge of the front wall 14 to the top edge of the back wall 16. Thus, as shown, the heat seal left side 22 defines the left side edge of bag 10, the right side heat seal 24 defines the right side edge of bag 10, and the top heat seal 26 defines the upper edge the top of the pouch 10. As shown in more detail below, the upper heat seal 26 is formed after filling the container through an open upper end.
    [022] In one embodiment, heat seals 22, 24 and 26 are seals formed by fusing together an adhesive layer located on the internal surfaces of the front wall 14 and / or rear wall 16. In one mode, heat seals 22, 24 and 26 are formed by fusing together a thermoplastic material. In other embodiments, other types of seals can be used. In one embodiment, seals 22, 24 and 26 can be formed by ultrasonic welding, and in another embodiment, seals 22, 24 and 26 can be formed from a pressure sensitive adhesive.
    [023] In the embodiment shown, the body 12 of the pocket 10 is formed of a single contiguous sheet, folded of flexible material. In this embodiment, pouch 10 includes a folded edge 28, shown located at the lower end 20. Front wall 14 and rear wall 16 are located on opposite sides of folded edge 28, and body material 12 is folded along the folded edge 28 such that the front wall 14 and rear wall 16 of the internal surfaces are facing each other and can be coupled together. In another embodiment, the front wall 14 and the rear wall 16 are formed of separate sheets of material; and in this embodiment, the lower end 20 includes a seal (e.g., a heat seal, solder, etc.) closing the bottom edge of the bag in place of the folded edge 28.
    [024] The pouch 10 includes a membrane 30 (the upper and lower edges of the membrane 30 are shown by the dotted lines in figure 1), and the membrane 30 extends between the inner surfaces of the front wall 14 and the rear wall 16. Bag 10 includes a content holding portion 32 located above membrane 30 and a dispensing nozzle 34 located below membrane 30. As explained in more detail below, portion 32 includes an internal cavity or chamber above membrane 30 that holds the contents of the container before the rupture of the membrane 30, and the membrane 30 is a single continuous portion of material that maintains the container content in the container chamber of the pouch 10 before the rupture of the membrane.
    [025] The dispensing nozzle 34 is located below the membrane 30 and generally extends from the membrane 30 to the folded edge 28. The dispensing nozzle 34 generally defines a dispensing passage that provides a path for fluid to flow out of the pouch 10 after rupture of the membrane 30 and creation of an opening in the nozzle 34. In this embodiment, since the folded edge 28 provides a continuous portion of material, the folded edge 28 acts as a seal along the distal end of the nozzle 34. In a In this embodiment, the spout 34 includes a frangible tear line 36 located adjacent the folded edge 28 (for example, tear line is located closer to the folded edge 28 than the membrane 30). The tear line 36 provides a weakened area to facilitate removal of the nozzle portion 34 between the tear line 36 and the folded edge 28 to create the opening in the nozzle 34.
    [026] Referring to figure 2, in another embodiment, bag 10 may include an elongated dispensing spout 38. Spout 38 is configured to facilitate dispensing fluid into certain containers that can be difficult to fill using a spout shortened 34. For example, nozzle 38 can be placed in a container having a small filling opening (for example, a motor oil filling oil, refillable spray bottle opening, etc.) allowing the fluid in the pouch 10 is filled directly into the container without the need for a funnel or other filling device. The nozzle 38 can have different lengths and widths between the membrane 30 and the folded edge 28, the distance between the membrane 30 and the tear line 36 can be greater than 30% of the total length of the pocket 10, and in another embodiment, the length of the nozzle 38 can be greater than 50% of the total bag 10 length. In another embodiment, the length of nozzle 38 can be between 25% and 75% of the total bag length 10. Similarly, the width of nozzle 38 can be narrower than the width of the pouch 10 in the upper heat seal 26. This configuration provides a nozzle that is more usable for small openings without limiting the width of the pouch 10 in the content holding position and thereby provides a narrow nozzle without limiting the volume corresponding to bag 10. In one embodiment, the width of the nozzle 38 is less than 50% of the width of the bag 10 in the heat seal superior 26, and in another embodiment, the width of the nozzle 38 is less than 30% of the width of the bag 10 on the top heat seal 26.
    [027] With reference to figure 3, a side elevation view of bag 10 is shown according to an exemplary embodiment. In the embodiment shown, the peripheral edge of the pocket portion 10 between the membrane 30 and the upper edge of the upper heat seal 26 is a substantially rectangular section. The dispensing nozzle 34 includes a tapered section that tapers inwardly towards the longitudinal axis of the pouch 10 as the dispensing nozzle 34 extends towards the folded edge 28 and in the opposite direction from the upper heat seal 26. In other embodiments, the pocket 10 can be formed in such a way that its peripheral edge has other shapes, for example, triangles, squares, circles, ovals, etc.
    [028] With reference to figure 4, a cross-sectional view of bag 10 taken along line 4-4 in figure 3, is shown according to an exemplary embodiment. The front wall 14 includes an inner surface 50, and the rear wall 16 includes an inner surface 52. The inner surface 50 and the inner surface 52 define the inner cavity 54. The membrane 30 separates the inner cavity 54 in a content chamber 56 and a dispensing passage 58. In the embodiment shown, the liquid content 60 is located in the content chamber 56, and the membrane 30 provides a barrier holding the content 60 in the content chamber 56 prior to rupture of the membrane 30.
    [029] As shown in figure 4, when viewed perpendicular to the longitudinal geometric axis of the pouch 10, the membrane 30 is substantially U-shaped having a front wall 62 and rear wall 64. A front heat seal 66 secures the front surface of the front membrane wall 62 to the inner surface 50 of the front body wall 14, and a rear heat seal 68 secures a rear surface of the membrane back wall 64 to the inner surface 52 of the rear body wall 16. The front heat seal 66 and the rear heat seal 68 extend across the width of the pocket 10 between side heat seals 22 and 24, as shown by the dotted line representation of the front heat seal 66 shown in figure 3. The membrane material 30, front heat seal 66 and rear heat seal 68 are fluid tight so that liquid content 60 is kept in the content chamber 56. Although seals 66 and 68 are shown in exemplary embodiments as heat seals, other fixing and sealing arrangements can be used between the membrane 30 and the outer body 12. For example, pressure sensitive adhesive or ultrasonic welds can be used to provide fluid-tight sealing and fixation between the membrane 30 and the internal body surface 12.
    [030] Liquid content 60 can be a wide variety of materials that are suitable to be contained in a dispensing pouch such as pouch 10. For example, in one embodiment, liquid content 60 is a single-use amount of a liquid ready to use. In one embodiment, the liquid content 60 can be a ready-to-use cleaning solution, stain remover, a personal care product (eg shampoo, hand lotion, antibacterial lotion, hand soap, etc.), automotive fluid (eg engine oil, coolant, gasoline additive, windshield wiper fluid, etc.), etc. In another embodiment, the liquid content 60 is a single use amount of a concentrated solution. In several embodiments, the concentrate can be a cleaning concentrate or a drinking concentrate. In other embodiments, the liquid content 60 can be any other suitable concentrated material, for example, pesticide concentrates, herbicide concentrates, fertilizer concentrates, automotive fluid concentrates, pharmaceutical concentrates, medical solution concentrates, nutritional supplement concentrates, etc. . In these embodiments, the user will dispense the concentrate from bag 10 into a suitable container, and add an appropriate amount of diluting agent (eg, water, saline, etc.,) to prepare a mixture at the desired concentration level. In one embodiment, bag 10 is small in size for easy carrying in a bag or pocket.
    [031] With reference to figure 5A, a cross-sectional view of bag 10 taken along line 5A-5A in figure 3, is shown according to an exemplary embodiment. Although the front heat seal 66 and the rear heat seal 68 provide the fluid-tight connection that extends laterally along the inner surface of the body 12 across the width of the pocket 10, a fluid-tight seal between the membrane 30 and the body 12 is also provided along the left and right side edge of the pouch 10. In the embodiment shown in figure 6A, the left and right side portions of the membrane 30 are positioned between the front wall, 14 and the rear wall 16 of the body 12 in the seals left and right side heat elements 22 and 24. Thus, in the position of the membrane 30 in the side heat seals 22 and 24, the inner surface 50 of the front wall of the body 14 is fixed on the outer surface of the front membrane wall 62, the inner surface of the front membrane wall 62 is attached to the inner surface of the rear membrane wall 64, and the outer surface of the rear membrane wall 64 is attached to the inner surface 52 of the rear wall of the body 16.
    [032] With reference to figure 5B, a cross-sectional view of bag 10 taken along line 5B-5B in figure 3 is shown according to an exemplary embodiment. Figure 5B shows the left side heat seal 22 and the right side heat seal 24 in an exemplary position that does not include the membrane 30. In this embodiment, the inner surface 50 of the front wall of the body 14 is fixed to the inner surface 52 of the rear wall of body 16 in heat seals 22 and 24. The upper heat seal 26 shown in figure 4 is also formed from a fixation between the inner surface 50 and the inner surface 526.
    [033] With reference to figure 6, a detailed view of the rear wall 16 and membrane 30 in the rear heat seal 68 is shown according to an exemplary embodiment. In the embodiment shown, the container body 12 and thus the rear body wall 16 is made of a sheet of multilayer material and membrane 30 is made of a single layer or monolayer material. In such an embodiment, the material of the container body 12 includes an inner adhesive layer 80. The inner adhesive layer 80 bonds to the membrane material 30 to form heat seals 66 and 68 and provide the seal in the portions of the side heat seals 22 and 24 shown in figure 5A. The inner adhesive layer 80 also bonds to itself to form side heat seals 22 and 24 and upper heat seal 26 in those places without membrane 30 (see figure 5B).
    [034] In one embodiment, the material of the outer container body 12 is formed of a multilayer-supported film material. In such an embodiment, the inner adhesive layer 80 is a heat sensitive adhesive, for example, a thermoplastic, and at least one of the other outer layers is a reinforced support material. In one embodiment, at least one of the outer layers is a sheet material, in another embodiment. At least one of the outer layers is a nylon material. In such an embodiment, the membrane 30 is made of a sheet of polymer monolayer material which bonds with the heat sensitive adhesive. For example, in one embodiment, membrane 30 is made of a thermoplastic material that melts to form a fluid-tight seal with the inner adhesive layer thermoplastic. In one embodiment, the inner adhesive layer 80 and membrane 30 are made of the same thermoplastic material. For example, the inner adhesive layer 80 and membrane 30 can both be a polyethylene material. In other embodiments, the inner adhesive layer 80 and membrane 30 are other suitable thermoplastic materials such as polypropylene, polyvinyl chloride, etc.
    [035] With reference to figures 7A-7C, the content dispensing of container 10 is shown according to an exemplary embodiment. Referring to Figure 7A, a dispensing opening 90 is created along dispensing passage 58. In the embodiment shown, dispensing opening 90 is created by tearing the folded edge 28 along the tear line 36 to remove the folded edge 28 from the body 12. In other embodiments, the dispensing opening 90 can be created in other modes. For example, in one embodiment, the body 12 does not include the tear line 36 and dispensing opening 90 can be created by cutting the folded edge 28 from the body 12. In another embodiment, the dispensing opening 90 can be an opening preformed closed by a closure, for example, a detachable leaf closure that is removed before dispensing. The sealed end of the dispensing passage 58 provided by the folded edge 28 (or one of the other sealing mechanisms) provides a support seal that holds the bag contents 10 with the container body 12 even if the membrane 30 was to inadvertently rupture before the intended use. In this way, the folded edge 28 can act to limit the chance of spillage if the membrane 30 were to be broken unintentionally.
    [036] After formation of the dispensing opening 90, the membrane 30 is ruptured to release content 60 from the content chamber 56 into passage 58 to allow the content 60 to be dispensed through opening 90. To rupture the membrane 30 , the pressure in the content chamber 56 is increased such that the pressure is greater than a rupture threshold of the membrane 30. As shown in figure 7A, the flexible body material 12 allows an inwardly oriented force F to be applied on the external surfaces of the front wall 14 and rear wall 16 resulting in an increase in pressure in the content chamber 56. In one embodiment, bag 10 is sized to fit in the user's hand or between the user's fingers in such a way that the force F is representative of the user by squeezing pocket 10. As shown in figures 7B and 7C, when the pressure in the content chamber 56 exceeds the rupture threshold of membrane 30, membrane 30 breaks or breaks in a position between the seals heat 66 and 68 to create a membrane breach 92. When the membrane 30 breaks, bonds in the membrane material 30 break or separate from itself resulting in the creation of the dispensing opening. When the membrane 30 breaks, the contents chamber 56 is placed in fluid communication with the dispensing passage 58, allowing the contents 60 to flow from the contents chamber 56, through the membrane breach 92 into the dispensing passage. 58 and then through the dispensing opening 90.
    [037] In various embodiments, the materials of the body 12 and membrane 30 and the structure of the pouch heat seals 10 are selected in such a way that the membrane 30 is the portion of the pouch 10 that breaks or fails after pressure build up in the content chamber 56. In such an embodiment, the body material 12 is stronger than the membrane material 30 such that when the breaking threshold of the membrane 30 is reached, the membrane 30 breaks, but the body 12 remains in contact. In addition, heat seals 22, 24, 26, 66 and 68 are structured to remain sealed when the membrane rupture threshold 30 is reached. These configurations help to provide controlled dispensing by ensuring that the membrane 30 breaks while the heat seals and the outer pouch body 10 remain intact. In various embodiments, the melting temperature used to make a seal refers to the strength of the seal. Therefore, in various embodiments, the melting temperature used to form heat seals 66 and 68 is substantially equal to or similar to the melting temperature used to make heat seals 22, 24 and 26. Using as a substantially similar melting temperature for all of the heat seals in the pouch 10 help to ensure that none of the heat seals are weaker than the other heat seals, and thus, help to ensure that the membrane 30 is the portion that breaks after increasing in pressure. In one embodiment, the melting temperature used to make the heat seals is between 135 and 176.66 degrees Celsius, more specifically between 143.33 and 154.44 degrees Celsius, and specifically is approximately 148.88 degrees Celsius.
    [038] In various embodiments, the body 12 and the membrane 30 can be individually formed in such a way that the membrane 30 has a tensile strength (i.e., the stress at which the material breaks) that is less than the tensile strength of the body 12. In such an embodiment, the body 12 and membrane 30 can each be formed of different materials, such that the breaking stress of the membrane 30 is less than the breaking stress of the second type of material. In addition, the rupture stress of membrane 30 is also less than the rupture stress of bag heat seals 10. In another embodiment, membrane 30 and body 12 can be formed from the same type of material (for example, both are monolayers of the same type of thermoplastic), but with different thicknesses such that the membrane 30 has a tensile strength less than the tensile strength of the body 12. In addition, in several modalities, the tightening operation to dispense from the bag 10 it can facilitate spill-free dispensing compared to spill from standard rigid wall containers or dispensing packaging without an inner membrane 30.
    [039] In several embodiments, the rupture stress of the membrane 30 is selected to be breakable by applying manual force. In such embodiments, the rupture stress of the membrane 30 is between 0.034 bars and 5.515 bars, specifically it is between 0.137 bars and 2.068 bars, and more specifically it is between 0.344 bars and 1.034 bars. In a specific embodiment, the rupture stress of the membrane 30 is approximately 0.551 bars. In various embodiments, the membrane 30 having tensile strengths discussed in that paragraph is formed of a polymeric material, as discussed above, and in one embodiment, it is polyethylene. In such embodiments, the tensile strength of the body 12 may be greater than 6,894 bars, it may be greater than 10,342 bars and it may be greater than 13,789 bars.
    [040] In other embodiments, the pocket 10 is designed in such a way that the membrane 30 is ruptured by the application of force by a device, machine or press, and in such modalities, the rupture stress of the membrane 30 can be greater than one rupture stress that can be broken by applying manual force. In such embodiments, the pouch 10 can be configured to contain various contents (for example, chemicals, cleaning agents, lubricants, motor oil, etc.) that are typically used in combination with a machine or device such that the rupture of the membrane 30 in the machine or device is desirable to dispense the contents to the device for use. For example, in one embodiment, bag 10 is configured to be broken in the mop holder of a mop bucket. In such embodiments, the rupture stress of the membrane 30 is greater than 5.515 bars, and specifically it is greater than 8.273 bars.
    [041] In various modalities, the membrane 30 is formed of a material having a thickness between 0.5 thousand and 2.5 thousand, specifically between 0.5 thousand and 1.5 thousand, and more specifically between 0.5 thousand and 1.0 mil. In a specific embodiment, the membrane 30 is formed of a material having a thickness of approximately 0.75 mil. In a specific embodiment, the membrane 30 is formed of a material having a thickness of approximately 0.75 mil having a tensile strength of approximately 0.551 bars. In various embodiments, the membrane 30 having thickness discussed in that paragraph is formed of a polymeric material, as discussed above, and in one embodiment, it is polyethylene.
    [042] With reference to figures 8A-8F, the manufacture of bag 10 is shown according to an exemplary embodiment. As shown in figure 8A, a first sheet of material 100 is provided from which the outer container body 12 is made, and a second sheet of material 102 is provided from which membrane 30 is made. The sheet 100 is folded in a substantially U-shaped configuration such that sheet 100 has a front portion 104, a rear portion 106 and a folded edge 108 that provides the folded transition from front portion 104 to the rear portion 106. As shown in figure 8, a section of the front portion 104 becomes the front wall 14 of the pouch 10, a section of the rear portion 106 becomes the rear wall 16 of the pouch 10, and a folded edge section 108 becomes the folded edge 28 of pouch 10.
    [043] Sheet 102 is also folded in a substantially U-shaped configuration such that sheet 102 has a front portion 110, a rear portion 112, and a folded edge 114 that provides the folded transition from the front portion 110 for the rear portion 112. As shown in figure 8, a front portion section 110 becomes the front wall 62 of the membrane 30 and a section of the rear portion 112 becomes the rear wall 64 of the membrane 30. The sheet 102 is positioned between the front portion 104 and the rear portion 106, as shown in figure 8A, such that the inner surfaces of the front portion 104 and the rear portion 106 of the outer sheet 100 are facing the outer surfaces of the front portion 110 and the rear portion 112 of the inner membrane material sheet 102.
    [044] With reference to figure 8B, the formation of heat seals fixes the membrane material sheet 102 to the internal surfaces of the body material sheet 100 is shown according to an exemplary embodiment. In the embodiment shown, the heat seals coupling the membrane material sheet 102 to the inner surface of the body material sheet 100 (for example, heat seals 66 and 68) are formed by heat bars 120. Heat bars 120 are heated to the desired welding or melting temperature and contact the outer surface of the body material sheet 100 such that the inner adhesive layer 80 (shown in figure 6) melts and bonds to the outer surface of the membrane material sheet 102 forming heat seals 66 and 68. An internal support element 122 can be used to support sheets of material 100 and 102 as heat bars 120 press inwardly during the formation of heat seals.
    [045] As shown in figure 8C, after fixing the membrane 30 to the inner surface of the outer material sheet 100, side heat seals 22 and 24 are formed. Side heat seals 22 and 24 can be formed by contacting heat bars, similar to heat bars 120, vertically to define the side edges of the pouch 10. As shown in figure 8D, sheets of material 100 and 102 are cut to the left of the left side heat seal 22 and to the right of the right side heat seal 24. This cut separates the ball 10 from the sheets of material, 100 and 102. As shown in figure 8E, the upper end 18 of the pouch 10 is initially an open filling end allowing the contents of container 60 to be filled through the open filling end. As shown in figure 8F, after filling the pouch 10, the upper end 10 is sealed by the upper heat seal 26. In various embodiments, the steps shown in figures 8A-8F occur in the order shown. In some embodiments, the process shown in figures 8A-8F repeats sequentially, in different positions along sheets of material 100 and 102, such that multiple pockets 10 are formed from sheets 100 and 102. In one embodiment, several equipment filling and heat sealing can be configured to create pocket 10 as shown in figure 8.
    [046] With reference to figure 9A and figure 9B, the formation of pocket 10 including elongated nozzle 38 is shown according to an exemplary embodiment. As shown in figure 9A, the side heat seals include first and second horizontal heat seals 140 and 142 that extend inwardly from the side heat seals 22 and 24, respectively. First and second nozzle heat seals 144 and 146 extend along the side edges of the nozzle 38 downwardly in the opposite direction of the inner portions of the first and second horizontal heat seals 140 and 142, respectively. As shown, first and second nozzle heat seals 144 and 146 extend the length of nozzle 38 from the first and second horizontal heat seals 140 and 142 to the folded edge 28. As shown in figure 9B, after forming the first and second nozzle heat seals 144 and 146, excess portions 150 of the sheet material 100 are cut from the pocket 10 to create the elongated nozzle 38 which is narrower than the content containing portion of the pocket 10.
    [047] The figures illustrate the exemplary modalities in detail, and it should be understood that the present application is not limited to the details or methodology set out in the description or illustrated in the figures. It should also be understood that the terminology is for description purposes only and should not be considered as limiting. Additional modifications and alternative modalities of various aspects of the invention will be evident to those skilled in the art in view of this description. Therefore, this description should be interpreted as illustrative only. The construction and arrangements, shown in the various exemplary modalities, are illustrative only. Although only a few modalities have been described in detail in this disclosure, many modifications are possible (for example, variations in sizes, dimensions, structures, shapes and proportions of the various elements, parameter values, assembly arrangements, use of materials, colors, orientations , etc.), without departing materially from the new teachings of the subject described here. Other substitutions, modifications, alterations and omissions can also be made in the design, operating conditions and arrangement of the various exemplary modalities without departing from the scope of the present invention.
    [048] Although the current application mentions specific combinations of features in the claims appended hereto, several embodiments of the invention refer to any combination of any of the features described here whether that combination is currently claimed or not, and any combination of features may be claimed in that order or future orders. Any of the characteristics, elements or components of any of the exemplary modalities discussed above can be used individually or in combination with any of the characteristics, elements or components of any of the other modalities discussed above.
    权利要求:
    Claims (16)
    [0001]
    1. Heat sealed compressible dispensing pouch, comprising: an outer sheet (12) having a front wall (14), a rear wall (16) and a folded edge (28) located between the front wall (14) and the rear wall (16), where the outer sheet (12) is folded along the folded edge (28) such that an inner surface (50) of the front wall (14) faces an inner surface (52) of the rear wall (16); one or more heat seals (22, 24, 26) coupling the inner surface (50) of a peripheral section of the front wall (14) to a peripheral section of the inner surface (52) of the rear wall (16) such that the internal surfaces (50, 52) of the front and rear walls (14, 16) define an interior cavity (54); a breakable inner membrane (30) formed from a single contiguous monolayer of thermoplastic material, the breakable inner membrane (30) located in the inner cavity (54), where the breakable inner membrane (30) divides the inner cavity (54) into one content chamber (56) and a dispensing passage (58), wherein one or more heat seals (22, 24, 26) define an edge of the content chamber (56) and the folded edge (28) defines a dispensing passage edge (58); a front heat seal (66) coupling the ruptured inner membrane (30) to the inner surface (50) of the front wall (14); a rear heat seal (68) coupling the internal tear-away membrane (30) to the internal surface (52) of the rear wall (16); and a marking line (36) formed on both the front and rear walls (14, 16), between the folded edge (28) and the breakable inner membrane (30), the marking line (36) configured in such a way that the portion of the outer sheet (12) between the marking line (36) and the folded edge (28) can be removed to create a dispensing opening (90) in the dispensing passage (58); wherein the burstable inner membrane (30) is configured to break when the pressure in the content chamber (56) is greater than a burst threshold, where to one or more heat seals (22, 24, 26), and the front and rear heat seals (66, 68) are configured to remain sealed when the inner membrane (30) breaks; CHARACTERIZED by the fact that the outer sheet (12) is made of a multilayer supported film material, in which at least one of the outer layers of the multilayer supported film material is a reinforced support material, in which said at least one of the outer layers is a sheet material or nylon material.
    [0002]
    2. Dispensing pouch according to claim 1, CHARACTERIZED by the fact that the rupture stress of the breakable inner membrane monolayer thermoplastic material (30) is less than the rupture stress of the supported multilayer film material.
    [0003]
    3. Dispensing bag, according to claim 1 or 2, CHARACTERIZED by the fact that the breaking threshold is between 0.137 bars and 2.068 bars.
    [0004]
    4. Dispensing pouch according to claim 1, CHARACTERIZED by the fact that the inner layer (80) of the supported multilayer film material is formed by a heat-triggered adhesive material, in which the heat-triggered adhesive material is configured to attach to the thermoplastic material of the breakable inner membrane (30), where the heat-triggered adhesive material and the monolayer polymer material are both of the same thermoplastic material
    [0005]
    5. Dispensing pouch according to any one of the preceding claims 1 to 4, CHARACTERIZED by the fact that it further comprises an extended nozzle (38) extending in the opposite direction from the ruptured inner membrane (30) to the folded edge (28), wherein the dispensing passage (58) is located on the extended nozzle (38), where the axial length of the extended nozzle (38) between the rupturable inner membrane (30) and the folded edge (28) is greater than 30 per percent of the total axial length of the dispensing pouch (10).
    [0006]
    6. Dispensing pouch, according to any one of the preceding claims 1 to 5, CHARACTERIZED by the fact that it further comprises the contents of a container (60) located in the content chamber (56), in which the rupture internal membrane (30), to one or more heat seals (22, 24, 26), the front heat seal (66) and the rear heat seal (68) are fluid tight so that the container contents (60) are kept in the container chamber (56) before rupture of the rupturable inner membrane (30).
    [0007]
    7. Dispensing bag, according to claim 1, CHARACTERIZED by the fact that one or more heat seals comprise:
    [0008]
    8. the left side heat seal (22) sealing a left side edge of the outer sheet (12);
    [0009]
    9. the right side heat seal (24) sealing a right side edge of the outer sheet (12);
    [0010]
    10. upper heat seal (26) sealing the upper end of the outer sheet (12);
    [0011]
    11. which addresses folded (28) is located opposite the upper heat seal (26);
    [0012]
    12. that the ruptured inner membrane (30) is located closer to the folded edge (28) than to the upper heat seal (26).
    [0013]
    13. Dispensing pouch, according to claim 1, CHARACTERIZED by the fact that the outer sheet (12) is made of a second material other than a monolayer of thermoplastic material of the ruptible inner membrane (30), in which the breaking stress of the second material is greater than 6,894 bars, and the breaking stress of the monolayer of the ruptured inner membrane thermoplastic material (30) is between 0.137 bars and 2.068 bars, and further comprising a fluid material (60) located in the content chamber (56).
    [0014]
    14. A method of forming a container, comprising: providing a first sheet of first flexible material (100) and a second sheet of second flexible material (102); wherein the first sheet (100) is formed of a single contiguous monolayer of thermoplastic material, and the second sheet (102) is made of supported multilayer film material; fold the first sheet creating a folded edge (28) that divides the first sheet into a front wall (104) and a rear wall (106), the front wall (104) and the rear wall (106) each having an opposite upper edge the folded edge (28); positioning the second sheet (102) between the front wall (104) and the rear wall (106) of the first folded sheet (100); creating a front heat seal (66) by attaching a front surface of the second sheet (102) to an internal surface of the front wall of the first sheet (100); creating a rear heat seal (68) by attaching a rear surface of the second sheet (102) to an internal surface of the rear wall of the first sheet (100); creating a left side heat seal (22) by attaching a left side of the front wall (104, 14) to a left side of the rear wall (106, 16) to seal the left side of the container; creating a right side heat seal (24) by attaching a right side of the front wall (104, 14) to a right side of the rear wall to seal (106, 16) the right side of the container; filling the container through a filling opening (18) defined by the upper edges of the front and rear walls (104, 14) of the first sheet (100); and creating an upper heat seal (26) fixing the upper edge of the front wall (104, 14) to the upper edge of the rear wall (106, 16) sealing the filling opening (18); CHARACTERIZED by the fact that at least one of the second sheets (102) is a reinforced support material, wherein said at least one of the outer layers is a sheet material or nylon material.
    [0015]
    15. Method according to claim 9, CHARACTERIZED by the fact that multiple containers (10) are formed from a single first sheet (100) and a single second sheet (102), and further comprising: cutting the first sheet (100) ) to the left of the left side heat seal (22) and cut the first sheet to the right of the right side heat seal (24) in such a way that the container (10) is separated from the rest of the single first sheet (100).
    [0016]
    16. Method, according to claim 9 or 10, CHARACTERIZED by the fact that the second sheet (102) is folded in a generally U-shaped configuration before the creation of the front and rear heat seals (66, 68).
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    同族专利:
    公开号 | 公开日
    EP3392162A1|2018-10-24|
    EP2935039A1|2015-10-28|
    EP3392162B1|2020-07-08|
    EP3712085A1|2020-09-23|
    US20140250838A1|2014-09-11|
    MX359542B|2018-10-01|
    US10710776B2|2020-07-14|
    US20180044068A1|2018-02-15|
    AU2013364349A1|2015-06-11|
    BR112015014867A2|2017-07-11|
    WO2014098959A1|2014-06-26|
    US9828143B2|2017-11-28|
    MX2015007056A|2016-01-08|
    EP2935039A4|2016-06-22|
    US20200299034A1|2020-09-24|
    US9586727B2|2017-03-07|
    US20140175124A1|2014-06-26|
    EP2935039B1|2018-07-11|
    AU2013364349B2|2017-11-02|
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    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-10-27| B09A| Decision: intention to grant|
    2021-01-05| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 15/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/725,465|2012-12-21|
    US13/725,465|US9586727B2|2012-12-21|2012-12-21|Squeezable dispensing package and method|
    PCT/US2013/041078|WO2014098959A1|2012-12-21|2013-05-15|Squeezable dispensing package and method|
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