DE102023103442A1 - Bag and method for producing at least one bag - Google Patents

Abstract

Bag (1) having a first and a second bag wall (2a, 2b) made of film. The bag walls are connected to one another in such a way that they form a bag body and each have a fold (3a, 3b) along one side to form a tunnel (4a, 4b), the bag body having a bag opening between the bag walls (2a, 2b) along the folds (3a, 3b). A band (5a, 5b) is arranged in each of the tunnels (4a, 4b), which is fastened to the respective bag wall (2a, 2b) at at least one point (6a, 6b). The first and the second bag wall (2a, 2b) each have a recess (7a, 7b) in the respective tunnel (4a, 4b) and at least one free end of the respective band (5a, 5b) extends into the respective recess (7a, 7b) to form a handle section (8a, 8b).

Description

The present invention relates to a bag that has a first and a second bag wall made of film. The bag walls are connected to one another in such a way that they form a bag body and each have a fold along one side to form a tunnel. The bag body has a bag opening between the bag walls along the fold, with a band being arranged in each of the tunnels, which is attached to the respective bag wall on one side. The present invention also relates to a method for producing at least one bag.

There are bags that have a tunnel at one opening in which an endless band is arranged that runs around the entire bag opening so that the bag can be closed using the elastic endless band. Such a bag is described, for example, in the utility model DE 201 10 350 U1 revealed.

The patent EP 1 364 892 B1 discloses a bag with an endless band arranged in a tunnel, wherein the band is attached to the bag opening at two points. Both documents disclose cuts in the bag opening by means of which at least one loop-shaped section of the respective endless bands is accessible to a user, so that the two loop sections allow the bag to be closed by pulling them out.

The disadvantage of bags according to the state of the art is that the bags can no longer be reliably closed if the band breaks, that the provision of a corresponding endless band requires a high manufacturing effort and that the cuts in the upper edge of the bag, i.e. in the bag opening forming the edge of the bag, reduce the stability of the bag.

It is therefore an object of the present invention to provide an improved bag.

The present invention solves this problem with a bag having the features of claim 1, as well as with a method having the features of claim 11.

The bag according to the invention has a first and a second bag wall made of film, which are connected to one another in such a way that they form a bag body and which each have a fold along one side to form a tunnel. The bag body has a bag opening between the bag walls along the fold and a band is arranged in each of the tunnels, which is fastened to the respective bag wall at least one point. The first and the second bag wall each have a recess in the respective tunnel and at least one free end of the band extends into the recess to form a handle section. This makes closing the bag easier and makes it less likely that the band will tear. In addition, a bag according to the invention can be produced efficiently and can be closed in an optically appealing manner.

In one embodiment of the present invention, the recess in the first bag wall is arranged opposite the point on the second bag wall at which the band is fastened in the tunnel, where opposite can mean that the recess is arranged perpendicular to a longitudinal direction of the band and/or on an outside of the first bag wall and that the point is arranged on a side of the second bag wall behind it in a plan view of the outside of the first bag wall, which leads to an advantageous arrangement of the bag walls and can simplify production of the bag. The recess in the second bag wall can preferably be arranged opposite the point on the first bag wall at which the band is fastened in the tunnel, where opposite means that the recess is arranged perpendicular to a longitudinal direction of the band and/or on an outside of the second bag wall and that the point is arranged on a side of the second bag wall behind it in a plan view of the outside of the second bag wall, whereby the functionality of the bag can be further improved.

In particular, the recesses can be formed laterally in the bag walls so that no cuts in the bag wall are necessary in the area of the opening, which can improve the resistance of the bag.

Preferably, the first handle section is arranged on the first bag wall in such a way that the second handle section is arranged on the second bag wall on a side edge of the first bag wall that is opposite in the longitudinal direction of the band, wherein in a plan view of the outside of the first bag wall, the first handle section can be arranged on a left or right end of the first bag wall, while the second handle section can be arranged on the right or left side edge of the first bag wall, i.e. in a plan view of the outside of the second bag wall on the left or right side edge of the second bag wall. This enables the bag to be closed easily by pulling on the two handle sections of the bands in opposite directions. Directions, whereby corresponding ends of the bag opening can be pulled together so that the bands can be tied around a neck section of the bag body. Likewise, for a further improvement, the second handle section can be arranged on the second bag wall in particular such that the first handle section on the first bag wall is arranged on a side edge of the second bag wall opposite in the longitudinal direction of the band. The respective band can extend in particular from one side edge of the bag to the side edge of the bag opposite in the longitudinal direction of the fold or, at least one end of the band, only reach to a respective connection point of the first and/or second bag wall.

To simplify handling of the handle sections and/or the straps, the tunnels can each have a second recess in a further embodiment, which simplifies handling of the handle sections. The second recess can in particular be arranged essentially in plan view of the respective bag wall from an outside of the bag under the respective handle section, i.e. under the respective strap, and/or be arranged concentrically to the first recess, so that it is easier to manufacture and inconspicuous, which can improve the visual appearance of the bag.

The bag walls have a projection perpendicular to the respective fold, particularly between the respective recess and the respective fold and/or between the respective band and the respective fold. This allows a larger effective filling volume of the bag to be achieved with a tied bag.

Preferably, the bag walls between the respective recess and the respective fold and/or between the respective band and the respective fold, perpendicular to the respective fold, have a first width of 10 mm to 75 mm and preferably of 25 to 50 mm, so that, in particular when the bag is in a closed state, handling of the bag is improved and so that the closed bag can be tied up with a high degree of security by means of the bands.

In one embodiment, the recess in the longitudinal direction of the band has a length of 5 mm to 50 mm and preferably of 10 mm to 25 mm, so that handling the handle section of the respective band is simplified. The band can have the same length as the maximum width of the bag and thus protrudes from the tunnel by the length of the recess. A shape of the recess, i.e. its outline in plan view, can essentially be an outline of a polygon that is closed or open on at least one side, for example a square, triangle or pentagon, or a circle, semicircle or arc that is closed or open on at least one side.

In particular, the band has a second width of 2 mm to 40 mm and preferably 5 mm to 25 mm perpendicular to the fold. This allows the band to be designed to be stable.

The bag walls and/or the tunnels are connected to one another in particular by welding and/or gluing, but can additionally or alternatively also be designed as a full tube so that it only needs to be welded on one side. The bag walls can preferably be welded and/or glued to one another by means of side welds. In particular, the bag walls are connected to one another by means of a weld and/or glue seam that is essentially U-shaped when viewed from above on a bag wall. The tunnels are connected in particular by means of a weld or glue seam running parallel to the respective fold to the inside or outside of the first or second bag wall forming the tunnel in the area of the tunnel. The bands are preferably glued and/or welded to the bag walls at the respective point for fastening to the respective bag wall, whereby the fastening can be carried out by means of the same and/or a separate weld or glue to that by which the bag walls are also connected to one another. The bag can thus be produced inexpensively using simple means and the fastenings are therefore reliable.

The respective tunnel can in particular be designed such that a part of a wall of the respective tunnel is attached either to an inner side or to an outer side of the respective bag wall, wherein the recess in the respective tunnel is always arranged in the respective bag wall such that it lies on the outside of the bag. This allows the bag to be designed in a visually appealing manner.

In a further embodiment, the tunnels can be connected to the inside or outside of the first or second bag wall forming the tunnel in the area of the tunnel to form a guide on two sides of the respective band. This allows the bag to be easily and reliably pulled together. Furthermore, a section above the band can be made particularly wide, which makes handling the bag easier. Above the guide, the respective bag wall has a groove between the side of the band on the side of the respective fold for improved lacing of the bag. tion and the respective fold preferably has a third width of 10 mm to 50 mm and even more preferably of 15 mm to 35 mm. The guide has perpendicular to the respective fold in particular a fourth width of 2 mm to 50 mm and preferably of 5 mm to 30 mm. This enables an optimized design of the guide.

In particular, the bag has a volume of 0.5 liters to 5 liters and preferably 1 liter to 3 liters, so that it can be designed to save space.

Preferably, the straps on the handle sections can be pulled out in opposite pulling directions essentially along the course of the respective tunnel in the direction from the respective point to which the strap is attached to the respective recess in order to close the bag. This enables the bag to be closed quickly and easily, while at the same time being reliable and tear-resistant.

In one embodiment of the present invention, the band is made of a less elastic material than the bag walls, so that it can be closed particularly easily and so that the band can be easily untied again after tying.

The bag can preferably be made essentially of plastic and/or metal and/or composite material. In a preferred embodiment, the bag is a film bag, which for example comprises plastic film. The bands are preferably made of plastic film. The bag can thus be optimized for its intended use and, for example, be designed to be particularly temperature or moisture resistant. To further improve these properties of the bag, it can in particular comprise polyethylene and/or polypropylene and/or polystyrene. This also allows the thermal conductivity of the bag to be optimized for the intended use, which is particularly advantageous when the bag is used for food storage. The bag can be used as a freezer bag, for example. Alternatively, the bag can also serve as a garbage bag.

In a further embodiment, the bag can have an inner fold of the first and second bag walls in a base region, wherein the base fold can be welded and/or glued along respective side edges. In the area of the base fold, the bag can have at least one diagonal weld, preferably two diagonal welds, so that the bag can be easily placed on the base region of the bag, particularly when filled.

1. a. Bereitstellen mindestens einer Folienbahn;
2. b. Einbringung mindestens einer Aussparung in die mindestens eine Folienbahn;
3. c. Fixierung mindestens eines umgelegten Bereichs an der mindestens einen Folienbahn, um mindestens einen Tunnel um mindestens ein eingeschlossenes Band, das an mindestens einer Stelle an der mindestens einen Folienbahn befestigt ist, auszubilden, wobei im Bereich der Aussparung ein Griffabschnitt an einem freien Ende des mindestens einen Bandes gebildet wird;
4. d. Ausbilden des mindestens einen Beutels aus der Folienbahn durch ein Verbinden von zwei Folienbahnen oder ein Falten einer Folienbahn, die jeweils gemäß der Schritte a) bis c) bearbeitet wurden, um mindestens einen Beutelkörper aus jeweils zwei Beutelwänden auszubilden;
5. e. Perforation oder Zuschnitt der Folienbahn, um mehrere Beutel erhalten zu können.

For particularly efficient production of the bag, the present invention also relates to a method for producing at least one bag, comprising the following steps:

1. a. Providing at least one film web;
2. b. Making at least one recess in the at least one film web;
3. c. fixing at least one folded-over region to the at least one film web to form at least one tunnel around at least one enclosed band which is fastened to the at least one film web at at least one location, wherein a grip portion is formed at a free end of the at least one band in the region of the recess;
4. d. forming the at least one bag from the film web by connecting two film webs or folding a film web, each of which has been processed according to steps a) to c), to form at least one bag body from two bag walls each;
5. e. Perforation or cutting of the film web to obtain multiple bags.

In one embodiment, the at least one bag can be formed in step d) at the end by welding and/or gluing two bag walls together in order to simplify the manufacturing process. The steps are preferably carried out in alphabetical order.

• 1 eine Ansicht des Beutels von einer Vorder- oder Rückseite der ersten oder zweiten Beutelwand,
• 2 eine Seitenansicht des Beutels aus 1 mit ausgezogenen Bändern,
• 3 eine Seitenansicht des Beutels von einer Vorder- oder Rückseite der ersten oder zweiten Beutelwand gemäß einer weiteren Ausführungsform der vorliegenden Erfindung,
• 4 eine Seitenansicht eines Beutels mit Bodenverschweißung,
• 5 eine weitere Ansicht des Beutels in 4 im teilweise aufgestellten Zustand.

The present invention is explained in more detail below with reference to several drawings. They show:

• 1 a view of the bag from a front or back of the first or second bag wall,
• 2 a side view of the bag 1 with extended straps,
• 3 a side view of the bag from a front or back of the first or second bag wall according to another embodiment of the present invention,
• 4 a side view of a bag with bottom welding,
• 5 another view of the bag in 4 in partially assembled condition.

In 1 is a side view of a bag 1 according to an embodiment of the present Invention is shown, the bag 1 having a first bag wall 2a and a second bag wall 2b, which according to the view shown, i.e. in a plan view of the respective bag wall from an outside of the bag, can be designed to be identical to one another. In a region of the bag 1 (upper in the drawing), the bag walls 2a, 2b each have a fold 3a, 3b, along which a bag opening runs and along which the bag walls 2a, 2b are folded. A folded region 11 is fastened along a seam 9 to a region 10 of the first bag wall 2a lying under the fold 3a, 3b. The same applies to the second bag wall, which also has a region 10 lying under a seam 9 and a folded region 11. The folded region 11 can be arranged on an inside or on an outside of the bag 1. Seam 9 can, for example, be an adhesive seam or a welded seam.

A tunnel 4a, 4b is formed through the seam 9, in which a band 5a, 5b is arranged, which is attached to the respective bag wall 2a, 2b at least at one point 6a, 6b. Both bag walls 2a, 2b have a recess 7a, 7b on at least one side of the tunnel 4a, 4b and a free end of the respective band 5a, 5b extends into the respective recess 7a, 7b to form a handle section 8a, 8b. The respective tunnel 4a, 4b can preferably also have at least one further recess (not shown), which can be arranged essentially under the respective handle section 8a, 8b. The recess 7a and the handle portion 8a are arranged on the side of an outer side of the bag 1 on which the point 6b is arranged on a rear side (on the left in a plan view of the front side), while the recess 7b and the handle portion 8b are formed on the side of the rear side of the bag 1 on which the point 6a is arranged on the front side (on the right in a plan view of the front side). The band 5a can thus be pulled out at the handle portion 8a in the direction 13a and the band 5b can be pulled out at the handle portion 8b in the direction 13b.

The bag walls 2a, 2b each have a first width B1 of 10 mm to 75 mm and preferably 25 to 50 mm between the respective band 5a, 5b and the respective fold 3a, 3b, perpendicular to the respective fold 3a, 3b. The respective recess 7a, 7b has a length B2 of 5 mm to 50 mm and preferably 10 mm to 25 mm in the longitudinal direction of the respective band 5a, 5b, and the band 5a, 5b each has a second width B3 of 2 mm to 40 mm and preferably 5 mm to 25 mm perpendicular to the respective fold 3a, 3b.

2 shows a side view of the bag 1 from 1 with bands 5a, 5b each extended in the direction 13a and 13b. As a result, the bag 1 is ruffled in the area of the tunnel 4a, 4b and closed below the folds 3a, 3b.

The bag 1 is in particular made of a film made of polyethylene and/or polypropylene and/or polystyrene.

In 3 is a side view of the bag 1 from a front or back of the first or second bag wall 2a, 2b according to a further embodiment of the present invention. The embodiment corresponds to that shown in 1 or 2 illustrated embodiment, however, the folded area 11 is additionally fastened to the area 10 lying under the fold 3a, 3b by means of a second seam 12, which can also be a welded seam or an adhesive seam. As a result, the bag walls 2a, 2b each have a guide in which the respective band 5a, 5b is guided. Above the guide, the respective bag wall 2a, 2b has a width B4 of 10 mm to 50 mm and preferably of 15 mm to 35 mm between the seam 12 and the respective fold 3a, 3b. The guide has a fourth width B5 of 2 mm to 50 mm and preferably of 5 mm to 30 mm between the seams 9 and 12.

In 4 a bag 1 is shown which largely corresponds to the embodiments in 1 and 2 which, however, also essentially corresponds to the embodiment in 3 The bag 1 also has a bottom fold 15 of the first and second bag walls in a bottom region 14, the bottom folds 15 being welded and/or glued along respective side edges 17. In the area of the bottom fold, the bag has at least one diagonal weld 16a, 16b.

In 5 a bag 1 is shown, which largely corresponds to the embodiment in 4 wherein the bag 1 is placed on the bottom folds 15 and wherein in 5 Side welds 18a, 18b are shown, by means of which the first and the second bag wall 2a, 2b are welded and/or glued together laterally. The respective band 5a, 5b can extend in particular from a side edge of the bag 1 to the side edge of the bag 1 opposite in the longitudinal direction of the fold 3a, 3b or at least one end of the band 5a, 5b can only reach to a respective side weld 18a, 18b of the first and/or second bag wall 2a, 2b.

The bag 1 according to the figures has in particular a volume of 0.5 liters to 5 liters and preferably of 1 liter to 3 liters.

List of reference symbols

1

bag

2a

first bag wall

2b

second bag wall

3a

Folding

3b

Folding

4a

tunnel

4b

tunnel

5a

band

5b

band

6a

Position

6b

Position

7a

Recess

7b

Recess

8a

Handle section

8b

Handle section

9

seam

10

Lower area

11

Upper area

12

seam

13a

Pull direction

13b

Pull direction

14

Floor area

15

Bottom folding

16a

Diagonal welding

16b

Diagonal welding

17

Side edge

18a

Side welding

18b

Side welding

B1

first width

B2

length

B3

second width

B4

third width

B5

fourth width

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• DE 20110350 U1 [0002]
• EP 1364892 B1 [0003]

Claims (15)

Bag (1) having a first and a second bag wall (2a, 2b) made of film, which are connected to one another in such a way that they form a bag body and each have a fold (3a, 3b) along one side to form a tunnel (4a, 4b), wherein the bag body has a bag opening between the bag walls (2a, 2b) along the folds (3a, 3b) and wherein a band (5a, 5b) is arranged in each of the tunnels (4a, 4b), which is fastened to the respective bag wall (2a, 2b) at at least one point (6a, 6b), characterized in that the first and the second bag wall (2a, 2b) each have a recess (7a, 7b) in the respective tunnel (4a, 4b) and at least one free end of the respective band (5a, 5b) is inserted into the respective recess (7a, 7b). Bag (1) to Claim 1 , characterized in that the recess (7a) in the first bag wall (2a) is arranged perpendicular to a longitudinal direction of the band (5a, 5b) opposite the point (6b) of the second bag wall (2b) at which the band (5b) is fastened in the tunnel (4b). Bag (1) to Claim 1 or 2 , characterized in that the recess (7b) in the second bag wall (2b) is arranged perpendicular to the longitudinal direction of the band (5a, 5b) opposite the point (6a) of the first bag wall (2a) at which the band (5a) is fastened in the tunnel (4a). Bag (1) according to one of the preceding claims, characterized in that the first handle portion (8a) is arranged on the first bag wall (2a) such that the second handle portion (8b) is arranged on the second bag wall (2b) on the opposite side edge of the first bag wall (2a) in the longitudinal direction of the band (5a, 5b). Bag (1) according to one of the preceding claims, characterized in that the tunnels (4a, 4b) each have a second recess. Bag (1) to Claim 5 , characterized in that the two recesses are each arranged in the region of the respective handle sections (8a, 8b). Bag (1) according to one of the preceding claims, characterized in that the bag walls (2a, 2b) between the respective band (5a, 5b) and the respective fold (3a, 3b), perpendicular to a course of the fold (3a, 3b), have a first width (B1) of 10 mm to 75 mm and preferably of 25 mm to 50 mm. Bag (1) according to one of the preceding claims, characterized in that the recesses (7a, 7b) in the longitudinal direction of the band (5a, 5b) have a length (B2) of 5 mm to 50 mm and preferably of 10 mm to 25 mm. Bag (1) according to one of the preceding claims, characterized in that the band (5a, 5b) has a second width (B3) of 2 mm to 40 mm and preferably of 5 mm to 25 mm perpendicular to the course of the fold (3a, 3b). Bag (1) according to one of the preceding claims, characterized in that the tunnels (4a, 4b) are connected to an inner or outer side of the first or second bag wall (2a, 2b) forming the tunnel (4a, 4b) in the region of the tunnel (4a, 4b) in order to form a guide on two sides of the respective band (5a, 5b). Bag (1) according to one of the preceding claims, characterized in that the bands (5a, 5b) on the handle sections (8a, 8b) can be pulled out in opposite pulling directions (13a, 13b), essentially along the course of the respective tunnel (4a, 4b) in the direction from the respective point (6a, 6b) to which the band (5a, 5b) is fastened, to the respective recess (7a, 7b) in order to close the bag (1). Bag (1) according to one of the preceding claims, characterized in that the band (5a, 5b) is made of a less elastic material than the bag walls (2a, 2b). Method for producing at least one bag (1), comprising: a. providing at least one film web; b. introducing at least one recess (7a, 7b) into the at least one film web; c. fixing at least one folded region (11) to the at least one film web in order to form at least one tunnel (4a, 4b) around at least one enclosed band (5a, 5b) which is fastened to the at least one film web at at least one point (6a, b), wherein in the region of the recess (7a, 7b) a handle section (8a, 8b) is formed at a free end of the at least one band (5a, 5b); d. forming the at least one bag (1) from the film web by connecting two film webs or folding a film web, which have each been processed according to steps a) to c), in order to form at least one bag body made of two bag walls (2a, 2b); e. perforation or cutting of the film web in order to obtain several bags (1). Method for producing a bag (1) according to Claim 13 , wherein the at least one bag (1) is finally formed in step d) by welding and/or gluing two bag walls (2a, 2b). Method for producing a bag (1) according to Claim 13 or 14 , with the steps being performed in alphabetical order.

Images