• 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:
    The present invention relates to a collection of bags comprising at least two bags, a first bag and a second bag, each of the bags of the collection having two opposite side pieces, a first side edge opposite a second side edge, a bottom and an upper end. For each of the bags, both side pieces at the upper end are bent downwards and connected to the side piece, whereby a channel or runner is formed in the upper end of each side piece. Here, each channel is provided with a string or band, and each channel has an edge opening in the upper end at the first side edge, so that a piece of string or band is accessible in each of the two edge openings. For each of the bags, the two side pieces are connected at the bottom of the bag and at a first side edge weld and at a second side edge weld, the second side edge weld extending substantially at a distance from the outer edge of the second side edge, and where the first side edge welding has a first part extending substantially at a distance from the outer edge of the first side edge, the first part continuing in a second part comprising an arcuate weld which curves outwards towards the outer edge of the first side edge under the edge openings. The first bag and the second bag are assembled along the second side edge of the first bag and the first side edge of the second bag. The second part of the first side edge weld in the second bag continues in a third side edge weld in the first bag, which third side edge weld extends between the second side edge of the first bag and the second side edge weld.
    公开号:DK201970803A1
    申请号:DKP201970803
    申请日:2019-12-20
    公开日:2021-05-27
    发明作者:Adam Frederik Trampe Peter
    申请人:Etradan Aps；
    IPC主号:
    专利说明:

    DK 2019 70803 A1 1 ASSEMBLY OF BAGS OF PLASTIC MATERIAL WITH CLOSING CORD
    FIELD OF THE INVENTION The present invention relates to an assembly of bags of plastic material with a lace closure device. The individual bags in the collection of bags can, among other things, be used as a waste bag.
    DESCRIPTION OF THE PRIOR ART In known bags with lacing closure devices, the laces run inside a runner at the top of the bag. The strings can be attached to both side seams. The bag is closed by pulling on the strings, which are exposed in an opening in the running passages between the side seams, and then a knot is tied. The pull on the strings will on average be perpendicular to the runners. In order to achieve a given quality so that the bag is not torn in the running passages, the bag must be made of a relatively strong material, see for example U.S. Patent No. 3,010,640. Other known bags with closure devices are described in U.S. Patent No. 3,547,341, U.S. Patent No. 4,792,241, U.S. Patent No. 3,738,568, U.S. Patent No. 3,772,968 and U.S. Patent No. 4,786,191. Common to the closure devices described here is that they have at least two cords which are pulled in opposite directions when the pose is to be closed. | Danish utility model document DK 1996 00394 describes a waste bag with a - cord closure device, where two cords run inside aisles at the top of the bag. Here, one end of the strings is stapled to one side seam, while the other end of the strings protrudes from an opening at the other side seam. The bag is closed by pulling on the two free ends of the strings and then tying a knot. This lace closure works by pulling at a smaller angle between the laces and the running aisles, whereby the bag can be made of a - less strong material than, for example, for the bag described in U.S. Patent No. 3,010,640. For the embodiment of the bag described in Danish utility model publication DK 1996 00394, it applies that it is made of plastic, where the sides are welded together along the two side seams. For the side seam where an opening has been made for the strings, the welding goes all the way up to this
    DK 2019 70803 A1 2 opening, and the weakest point when opening the bag is the point where the weld in the side seam meets the opening for the strings. and the opening for the strings is the bag described in Danish utility model specification DK 1996 00394. The bag described in DK 1767709 B1 is made of two opposite side pieces, which are connected at each of the two side edges of the bag and at the bottom of the bag, where both side pieces in the upper end is bent downwards and connected to the side piece, thereby forming a channel or passageway in the upper end of each side piece. The side pieces of the bag are connected at a distance from the first side edge by a first side edge weld and at a distance from the second side edge connected by a second side edge weld, and each channel is provided with a string or a band and a side edge opening in the first side edge so that a piece of string or ribbon protrudes from the two side edge openings. The first side edge weld extends substantially at a distance from the outer edge of the first side edge and terminates in an arcuate shape below the side edge openings, which arcuate weld curves outwardly towards the outer edge of the first side edge. By using the arcuate weld, a stronger transition is obtained between the first side edge weld and the side edge openings.
    > The bag described in DK 1767709 B1 is manufactured as an assembly of bags, the second side edge of the leading bag being connected to the first side edge of the subsequent bag, the connection between the bags being perforated, so that the individual bags can be separated from the assembly by detachment along the perforation. Since the side edge welds run at a distance from the side edges, the perforation has no> influence on the density of the bag. In making this assembly of bags, the arcuate weld ends in the first side edge below the side edge openings and thus some distance from the top edge of the bag.
    In the automated production of collections of bags, where the bags have a design as described in DK 1767709 B1, it is a problem that the arcuate weld ends some distance from the upper edge of the bag. This arcuate weld is part of the first side edge weld, which for most of its extension runs parallel to the second side edge weld, the second side edge weld extending throughout the bag from bottom to top. In the automated manufacture of the bags, it can be one
    DK 2019 70803 A1 3 advantage that the first side edge weld also has a course in the entire extent of the bag from bottom to top. There is therefore a need for a collection of bags having an embodiment in which both the first and the second side edge assembly extend from the bottom of the bag to the top without stopping. With such an embodiment, the manufacture of the collection of bags - can be carried out in a shorter time, whereby the manufacturing cost of the collection of bags becomes smaller.
    SUMMARY OF THE INVENTION It is an object of the invention to provide a collection of bags having an embodiment which can be used to advantage in an automated manufacturing process of the collection of bags.
    This object is achieved according to a first aspect by providing a collection of bags comprising at least two bags, a first bag and a second bag, each of the bags of the collection having two opposite side pieces, a first side edge opposite a second side edge, a bottom and an upper end; wherein, for each of the bags, both side pieces at the upper end are bent downwards and connected to the side piece, thereby forming a channel or passageway at the upper end of each side piece; wherein, for each of the bags, each channel is provided with a string or band and has an edge opening in the upper end at the first side edge so that a piece of string or band is accessible in each of the two edge openings; wherein, for each of the bags, the two side pieces are connected at the bottom of the bag and at a first side edge weld and at a second side edge weld; wherein, for each of the bags, the second side edge weld extends substantially at a distance from the outer edge of the second side edge; wherein, for each of the bags, the first side edge weld has a first portion extending substantially at a distance from the outer edge of the first side edge, the first portion continuing in a second portion comprising an arcuate weld that curves outwardly towards the outer edge of the first side edge below the edge openings; and wherein the first bag and the second bag are assembled along the second side edge of the first bag and the first side edge of the second bag. The second part of the first side edge weld in the second bag continues in a third side edge weld in the first bag,
    DK 2019 70803 A1 4 which third side edge welding extends between the second side edge of the first bag and the second side edge weld. By allowing the second part of the first side edge weld to continue in the third - side edge weld, it is achieved that the side edge joint constituting the total course of the first and third side edge welds has a course from the bottom of the bag to top without stay. This embodiment is suitable for an automated production of the assembly of bags at a higher speed.
    In a possible embodiment of the first aspect, the joint along the second side edge of the first bag and the first side edge of the second bag are perforated so that the first bag can be separated from the second bag by tearing along this perforated joint.
    By allowing the second part of the first side edge weld in the second bag to continue in the third side edge weld in the first bag next to the second side edge weld in the first bag, a stronger joint of the upper part of the first bag is obtained. bag. This can be important when the first bag is separated from the second bag for use, for example, as a waste bag.
    | a possible embodiment of the first aspect comprises the assembly of bags at least three bags, the second bag and the third bag being assembled along the second side edge of the second bag and the first side edge of the third bag; and wherein the second portion of the first side edge weld in the third bag continues in a side edge weld in the second bag, the second bag having a third side edge weld extending between the second side edge of the second bag and the second side edge weld. .
    In a possible embodiment of the first aspect, the joint along the second side edge of the second bag and the first side edge of the third bag are perforated so that the second bag can be separated from the third bag by tearing along this perforated joint.
    A possible embodiment of the first aspect is characterized in that for each of the bags the downwardly bent part of a side piece is connected to the side piece by a weld, which
    DK 2019 70803 A1 welding extends to the outer edge of the first side edge and below the arcuate part of the second part of the first side edge welding. A possible embodiment of the first aspect is characterized in that for each of the bags 5 - the first part of the first side edge weld extends from the bottom of the bag and up to the second part of the first side edge weld. A possible embodiment of the first aspect is characterized in that for each bag with a third side edge weld, the third side edge weld extends out to the upper end of the bag.
    A possible embodiment of the first aspect is characterized in that for each bag with a third side edge weld, the third side edge weld extends up into the channels of the side pieces and out to the upper end of the bag.
    A possible embodiment of the first aspect is characterized in that for each of the bags the second side edge weld extends from the bottom of the bag and up to the outermost of the upper end.
    A possible embodiment of the first aspect is characterized in that for each of the bags the second side edge weld extends up into the channels of the side pieces and holds the string or strings to the bag.
    A possible embodiment of the first aspect is characterized in that for each of the bags the two edge openings are substantially identical in design.
    In a possible embodiment of the first aspect, the assembly of bags is made of a plastic material, such as polyethylene (polyethylene, PE) or other film materials that can be welded, such as films made of cellulose, starch and / or plant fibers.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention is described in more detail below with reference to the drawing, in which
    DK 2019 70803 A1 6 fig. 1 shows a known bag seen from the side with a side seam weld ending in an arcuate shape, fig. 2 shows a collection of bags, the bags being equal to the bag shown in fig. 1, fig. Fig. 3 shows a first embodiment of a collection of bags according to the present invention; 4 is an enlarged sectional view of the transition between two successive bags in the assembly shown in FIG. 3, fig. 5 shows a single bag separated from the collection of bags shown in fig. 3, fig. Fig. 6 shows another embodiment of a collection of bags according to the present invention, and 7 shows a single bag separated from the collection of bags shown in fig. 6.
    DETAILED DESCRIPTION OF THE INVENTION In FIG. 1 shows a known bag 1 seen from the side. The bag has two side pieces 2a, 2b and can be made of a plastic material, such as polyethylene (poplyethylene, PE). The bag can be made from two side pieces 2a, 2b, which are placed on top of each other and welded together along the bottom 3 and along the side edges 4a, 4b with side edge welds 5a, 5b, or the bag can - be made from one piece bent at bottom 3 and welded together along the side edges 4a, 4b with side edge welds 5a, 5b. The two side edge welds 5a, 5b extend at a distance from the respective side edges 4a, 4b. At the open end or upper part 6 of the bag a piece of both side pieces 2a, 2b is bent - downwards and fastened by welding to the respective side piece with upper welds 7a, 7b, whereby a channel or passage 8a, 8b is formed in the upper end of each side piece 2a, 2b. There are uniform edge openings 10a, 10b in one side edge 4a of each channel 8a, 8b, and a cord or band 9a, 9b is provided in each of the channels 8a, 8b such that both cords or bands 9a, 9b have one end, available in the edge openings 10a, 10b,
    DK 2019 70803 A1 7 and at the other end is attached to the bag 1 near the second side edge 4b, the corresponding side edge weld 5b being led all the way to the top 6 of the bag 1. The rear or other side edge weld 5b is made as a straight line from the bottom 3 to the upper end or top 6 of the bag 1. Hereby the second side edge weld 5b extends up into the channels 8a, 8b of the side pieces and holds the strings or bands 9a, 9b to the bag 1. The front or first side edge welding 5a has a first part extending substantially at a distance from the outer edge of the first side edge 4a, which first part continues in a second part comprising an arcuate weld 11 which curves outwards towards the outer edge of the first side edge 4a below the edge openings 10a, 10b.
    It can be seen that for the bag 1 the upper welds 7a, 7b are led all the way out to the side edges 4a, 4b whereby they cross the side edge welds 5a, 5b.
    If the bag is to be placed in a rack, the upper end 6 of the bag is opened and a pull occurs at the point where the openings 10a, 10b and the side edge welding meet. When the upper part of the weld 5a is arcuate, this arcuate weld 11 can take a larger pull without breaking.
    FIG. 2 shows a collection of three bags 1a, 1b, 1c, each of the bags 1a, 1b, 1c being equal to the bag 1 shown in fig. Therefore, the same figure reference numerals have been used as for fig. 1, and reference is made to the description in FIG. 1 for the reference numerals 1-11, the reference numerals for the bag 1a ending with an a, the reference numerals for the bag 1b ending with a b, the reference numerals for the bag 1c ending with a c. For the collection of bags shown in fig. 2, the joint along the second side edge 4ba of the first bag 1a and the first side edge 4ab of the second bag is perforated, so that the first bag 1a can be separated from the second bag 1b by tearing along this perforated joint 4ba, 4ab. In the same way, the joint along the second side edge 4bb of the second bag 1b and the first side edge 4ac of the third bag is perforated, so that the second bag 1b can be separated from the third bag 1c by tearing along this perforated joint 4bb, 4ac.
    FIG. 3 shows a first embodiment of an assembly of three bags 21a, 21b, 21c according to the present invention. The assembly of bags 21a, 21b, 21c is made in almost the same way as the assembly of bags 1a, 1b, 1c shown in fig. 2. So each of the bags 21a, 21b, 21c has
    DK 2019 70803 A1 8 two opposite side pieces, where only the front side piece 22aa, 22ab, 22ac is shown in fig. 3, a first side edge 24aa, 24ab, 24ac opposite opposite a second side edge 24ba, 24bb, 24bc, a bottom 23a, 23b, 23c and an upper end 26a, 26b, 26c. For each of the bags 21a, 21b, 21c, both side pieces at the upper end are bent downwards and connected to the side piece with upper welds, where only the front weld 27aa, 27ab, 27ac are shown in fig. 3, whereby a channel or runner is formed in the upper end of each side piece, only the front channel 28aa, 28ab, 28ac being shown in fig. Each channel, both the front 28aa, 28ab, 28ac and the rear ones, is provided with a string or band, only the front string or band 29aa, 29ab, 29c being shown in FIG. 3, and has an edge opening in the upper end at the first side edge so that a piece of string or ribbon is accessible in each of the two edge openings. In fig. 3, only the leading edge opening 210aa, 210ab, 210ac is shown. For each of the bags 21a, 21b, 21c, the edge openings of the two channels are substantially similar in design.
    For each of the bags 21a, 21b, 21c, the two side pieces are connected at the bottom 23a, 23b, 23c of the bag and at a first side edge weld 25aa, 25ab, 25ac and at a second side edge weld 25ba, 25bb, 25bc. Here, the second side edge weld 25ba, 25bb, 25bc extends substantially at a distance from the outer edge of the second side edge 24ba, 24bb, 24bc and all the way from the bottom of the bag to the outermost of the upper end 26a, 26b,> 26c. Hereby, the second side edge weld 25ba, 25bb, 25bc extends up into the channels 28aa, 28ab, 28ac of the side pieces and holds the strings or bands 29aa, 29ab, 29ac to the bag 21a, 21b, 21c.
    The first side edge weld 25aa, 25bb, 25cc has a first part extending substantially at a distance from the outer edge of the first side edge 24aa, 24ab, 24ac, and this first part continues in a second part comprising an arcuate welding 211a, 211b, 211c curving outwardly toward the outer edge of the first side edge 24aa, 24ab, 24ac below the edge openings 210aa, 210ab, 210ac.
    The first bag 21a and the second bag 21b are assembled along the second side edge 24ba of the first bag and the first side edge 24ab of the second bag. For the assembly of bags shown in fig. 3, the joint along the second side edge 24ba of the first bag 21a and the first side edge 24ab of the second bag 21b is perforated so that the first bag 21a can be separated from the second bag 21b by tearing along this perforated joint 24ba, 24ab. On
    In the same way, the joint along the second side edge 24bb of the second bag 21b and the first side edge 24ac of the third bag 21c is perforated, so that the second bag 21b can be separated from the third bag 21c by tearing along this perforated joint 24bb, 24ac. The assembly of bags in fig. 3 differs from the assembly of bags in fig. 2 in that the second portion 211b of the first side edge weld 25ab of the second bag 21b continues in a third side edge weld 212a of the first bag 21a, said third side edge weld 212a extending between the second side edge 24ba of the first bag and second side edge welding 25ba. Similarly, the second portion 211c of the first side edge weld 25ac of the third bag 21c continues in a third side edge weld 212b of the second bag 21b, said third side edge weld 212b extending between the second side edge 24bb of the second bag and the second side edge weld. welding 25bb. In fig. 3, a third side edge weld 212c is also shown in the third bag 21c. However, the third side edge weld 212c in the bag 21c is only necessary if there is a subsequent bag assembled to it - rear side edge 24bc of the third bag 21c. FIG. 4 is an enlarged sectional view of the transition between the first bag 21a and the second bag 21b of the collection of bags shown in FIG. In FIG. 4, it is seen how the second curved portion 211b of the first side edge weld 25ab in the second bag 21a continues in the third side edge weld 212a in the first bag 21a. It is seen that the third side edge weld 212a has an arcuate lower portion and a straight, upper portion, the arcuate lower portion being a continuation of the second curved portion 211b of the second bag 21a. For the assembly of bags 21a, 21b, 21c in fig. 3, when the second curved portion 211b, 211c of the first side edge weld 25ab, 25ac of a bag 21b, 21c located behind it continues in the third side edge weld 212a, 212b of the front bag 21a, 21b, then the side edge joint formed by the total course of the first and third side edge welds has a course from the bottom of the bag to the top without stopping. This embodiment is suitable for an automated production of the assembly of bags at a higher speed.
    FIG. 5 shows the first bag 21a separated from the collection of bags shown in fig. Therefore, the same figure reference numerals have been used as for the bag 21a in fig. 3.
    DK 2019 70803 A1 10 Fig. 6 shows another embodiment of an assembly of three bags 31a, 31b, 31c according to the present invention.
    The assembly of bags 31a, 31b, 31c in fig. 6 is made in almost the same way as the assembly of bags 21a, 21b, 21c in fig. 3, and reference is therefore made to the description of FIG. 3, the first digit in the reference numerals of FIG. 3, which is a 2, for FIG. 6 is replaced by a number 3.
    The bags 31a, 31b, 31c in fig. 6 is different from the bags 21a, 21b, 21c in fig. 3 in that the edge openings 310aa, 310ab, 310ac have a slightly different design, in that they both start and end at the edge of the upper end 36a, 36b, 36c.
    FIG. 7 shows the first bag 31a separated from the collection of bags shown in fig. Therefore, the same figure reference numerals have been used as for the bag 31a in fig. 6. The devices shown in FIG. 3, 5, 6 and 7 bags or assemblies of bags may be made of a plastic material such as polyethylene (polyethylene, PE) or other weldable film materials such as films made of cellulose, starch and / or plant fibers.
    权利要求:
    Claims (11)
    [1]
    A collection of bags comprising at least two bags, a first bag and a second bag, each of the bags of the collection having two opposite side pieces, a first side edge opposite - facing a second side edge, a bottom and an upper end; wherein, for each of the bags, both side pieces at the upper end are bent downwards and connected to the side piece, thereby forming a channel or passageway at the upper end of each side piece; wherein, for each of the bags, each channel is provided with a string or band and has an edge opening in the upper end at the first side edge so that a piece of string or band is accessible in each of the two edge openings; wherein, for each of the bags, the two side pieces are connected at the bottom of the bag and at a first side edge weld and at a second side edge weld; wherein, for each of the bags, the second side edge weld extends substantially at a distance from the outer edge of the second side edge; wherein, for each of the bags, the first side edge weld has a first portion extending substantially at a distance from the outer edge of the first side edge, the first portion continuing in a second portion comprising an arcuate weld that curves outwardly towards the outer edge of the first side edge below the edge openings; and wherein the first bag and the second bag are joined along the second side edge of the first bag and the first side edge of the second bag; characterized in that the second part of the first side edge weld in the second bag continues in a third side edge weld in the first bag, which third side edge weld extends between the second side edge of the first bag and the second side edge weld.
    [2]
    An assembly of bags according to claim 1, characterized in that the assembly along the second side edge of the first bag and the first side edge of the second bag is perforated, so that the first bag can be separated from the second bag by tearing along this perforated assembly.
    [3]
    A collection of bags according to claim 1 or 2, characterized in that the collection comprises at least three bags, the second bag and the third bag being joined along the second side edge of the second bag and the first side edge of the third bag; and
    DK 2019 70803 A1 12 where the second part of the first side edge welding in the third bag continues in a side edge welding in the second bag, whereby the second bag has a third side edge welding which extends between the second side edge of the second bag and second side edge welding.
    [4]
    An assembly of bags according to claim 3, characterized in that the assembly along the second side edge of the second bag and the first side edge of the third bag is perforated, so that the second bag can be separated from the third bag by tearing along this perforated assembly.
    [5]
    An assembly of bags according to any one of claims 1-4, characterized in that for each of the bags the downwardly bent part of a side piece is connected to the side piece by a weld, which weld extends to the outer edge of the first side edge and below the arcuate portion of the second portion of the first side edge weld.
    [6]
    An assembly of bags according to any one of claims 1-5, characterized in that for each of the bags the first part of the first side edge weld extends from the bottom of the bag and up to the second part of the first side edge weld. welding.
    [7]
    An assembly of bags according to any one of claims 1-6, characterized in that for each bag with a third side edge weld, the third side edge weld extends to the upper end of the bag.
    [8]
    An assembly of bags according to any one of claims 1-7, characterized in that for each bag with a third side edge weld, the third side edge weld extends - up into the channels of the side pieces and out to the upper end of the bag.
    [9]
    An assembly of bags according to any one of claims 1-8, characterized in that for each of the bags the second side edge weld extends from the bottom of the bag and up to the outermost of the upper end.
    [10]
    An assembly of bags according to any one of claims 1-9, characterized in that for each of the bags the second side edge weld extends up into the channels of the side pieces and holds the string or strings to the bag.
    DK 2019 70803 A1 13
    [11]
    An assembly of bags according to any one of claims 1-10, characterized in that for each of the bags the two edge openings are substantially identical in design.
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    同族专利:
    公开号 | 公开日
    DK180485B1|2021-05-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2021-05-27| PAT| Application published|Effective date: 20210527 |
    2021-05-27| PME| Patent granted|Effective date: 20210527 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201970803A|DK180485B1|2019-12-20|2019-12-20|ASSEMBLY OF BAGS OF PLASTIC MATERIAL WITH CLOSING CORD|DKPA201970803A| DK180485B1|2019-12-20|2019-12-20|ASSEMBLY OF BAGS OF PLASTIC MATERIAL WITH CLOSING CORD|
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