DE202012013001U1 - chain bags - Google Patents

Abstract

Chain bag (1) with at least one receiving area (20) extending laterally, comprising a front and a rear film (21, 22) which form bags (31-33) arranged next to one another on the receiving area (20), the bags (31-33) are provided in particular to receive piece goods or foodstuffs, the front and rear films (21, 22) being connected to the sides (34) of the bags (31-33) each with a side seam (8), and wherein the bags (31-33) are connected to one another in the upper receiving area (20), the receiving area (20) being suitable for being guided by means of a guide device (41) of a packaging device (40), wherein in the receiving area (20 ) relief slots (9) are arranged at regular intervals (12), characterized in that spaced below the relief slots (9) in the area of the upper end point (7) of the respective side seam (8) one the front and the rear foil e (21, 22) cutting recess (10) is made in the bag, and that the recess (10) has a rounded contour.

Description

The invention relates to a chain bag and also discloses a method for producing chain bags, wherein a chain bag has a receiving area extending in the lateral direction. There are provided a front and a rear sheet which form juxtaposed bags at the receiving area. The bags are z. B. are intended to receive general cargo or food. For example, frozen foods can be stored in the bags. But it is also possible to fill other pieces or bulk goods in the bag.

There are chain bag known, which consist of two superposed film webs or from a centrally wrapped film web. During manufacture, the front and rear sheets of these known chain bags are formed by side seam welding in sections to form open and closed chain side bags at their upper edges. The chain bags comprise a receiving area extending in the lateral direction and bags arranged side by side on the receiving area.

To form tubular receptacles for guide rods of a packaging device, the known chain bag at the upper edges each have an envelope with a longitudinal seam, below which in the area above an upper end point of a side seam a longitudinal transverse seam spaced parallel transverse slots is introduced.

Such or similar chain bags are from the DE 20 2004 002 244 U1 known. However, the known chain bag have the disadvantage that they can easily tear at a machine opening by imported into the upper tubular receptacles guide rods in the upper end points of the welded side seams. This is to be prevented by the introduction of transverse slits, but can not be completely excluded. Furthermore, after a tearing of the upper end points of the side seams, there is often a change in the desired shape of the filling opening of the chain bag below the guide rods. As a result, for example, a deep-frozen packaging introduced gravity-fed into the chain bag from above can jam in the opening area and substantially hinder the production process.

With the WO 82/00129 A1 For example, there has been known a continuous web of pouches and an apparatus and method for filling the pouches. In the film web vertical welds are present, between each of which a vertical slot is provided to provide individual bags available. Horizontal slots are provided at the top of the vertical slots, providing a total of T-shaped slots. The horizontal slots allow for a rectangular opening of the bags for filling. Chain bags according to the preamble of claim 1 are known from DE 699 18 992 T2 known.

The object of the invention is therefore to provide chain bag available that are resilient and processed reliably and can be filled manually or automatically.

This object is achieved by a chain bag with the features of claim 1. Preferred developments of the invention are subject of the dependent claims. Further advantages and features of the invention will become apparent from the general description and from the description of the embodiment.

An inventive chain bag has a receiving area extending in the lateral direction. The chain bag comprises at least one front and at least one rear film, which form juxtaposed bags on the receiving area. The bags are z. B. intended to receive general cargo or food. The front and back foils are joined at the sides of the bags with a side seam. The bags are interconnected in the upper receiving area. The receiving area is suitable for being guided by means of a guide device of a packaging device. In the receiving area discharge slots are arranged at regular intervals. Spaced apart and below at least one relief slot, at least one recess separating the front and / or the rear foil is introduced in the area of the upper end point of the side seam. The recess has a rounded contour. In particular, the recesses are provided at regular intervals.

The chain bag according to the invention has many advantages, as it allows an efficient and reliable filling of food and the like in bags.

This inventive design can significantly increase and even double the weld seam strength of the side seams, especially in the area of their upper end points. In addition, the possible opening width of the chain bag increases by the introduction of the recesses.

Further advantageous embodiments of the subject of the invention will become apparent with and in combination of the main claim subsequent claims and the description.

Preferably, each bag portion is provided open at the top.

In particular, the front and rear sheets are joined at the sides, in particular, of each bag by side seams and at the bottom by a bottom seam. It is possible that each bag has its own side seams. The bags of the chain bag are connected to each other in particular in the upper receiving area or extend into the upper receiving area. After filling, the bags are cut from the upper receiving area and in particular closed.

The relief slots are preferably designed as transverse slots. The relief slots may be arranged parallel or approximately parallel to an upper edge of the chain bag. But also possible is an arrangement at an angle.

Preferably, each side seam of a chain bag has its own upper end point, which lies on the circumference of the recess. As a result, a particularly high stability is achieved because the forces absorbed during filling are effectively dissipated.

Preferably, the front and the rear film of two superimposed film webs. In particular, it is also possible that the front and the rear sheet of a single z. B. consist centrally handled film web.

It is preferred that at least one receiving device is provided on or in the receiving region. In particular, in each case at least one receiving device is arranged on the front and the rear foil. The receiving device is preferably designed to receive at least one guide element of the guide device of a packaging device in order to guide and hold the chain bag in particular on the guide device of the packaging device.

The receiving device or at least receiving device has at least one tubular receptacle. For example, an at least partially tubular receptacle may be provided to receive guide rods of the packaging device. As a result, the chain bag can be held and guided on the packaging device. Such a tubular receptacle may be formed as a rod receptacle and formed by an envelope in the front or rear foil.

A tubular receptacle may have a plurality of attachment points or at least sections of a seam at the folded portion. Such a seam may be continuous or have interruptions.

In all embodiments, it is preferred that the recess has a closed circumferential line.

The contour of the recess is rounded. But it is also possible that the contour is polygonal and in particular polygonal. Essentially round or oval contours are suitable for a particularly effective dissipation of forces. Also polygonal recesses with z. B. a number of corners of eight or more are suitable. They form approximately round or rounded contours.

Advantageously, at least one recess is formed at least substantially as a circular recess.

The recess may be punched or cut or otherwise introduced. An introduction by lasers, piercing, cutting or the like is possible.

Preferably, at least one upper end point of at least one side seam is arranged in the deepest region of the recess.

It is preferred that, in the case of a machine opening of the upper edges, the upper end points of the side seams lie on a peripheral line of a functional opening which is formed by regions of the upper edge of the chain bag folded around the end seams of the side seams by approximately 90 ° from the edges of the recess ,

According to a particularly preferred embodiment of the invention, the recess has a closed circumferential line, in particular the shape of a circle, which can be punched or cut out, whereby the production of this recess can be produced inexpensively and quickly in any manner.

It is also advantageous embodiment of the invention, in which the upper end points of the side seams are arranged in the lowest region of the recess, whereby the end points as far as possible from the transverse slot and the upper edge of a Chain bag are removed and allow the largest possible opening width of the chain bag.

This constructive development of the inventive chain bag allows for a machine opening of its upper edges, that the upper end points of the side seams come to rest on a peripheral line of a functional opening of the ends of the side seams each about 90 ° unfolded areas of the upper edges of the chain bag the edges of the recess is formed. In this case, the loading direction of the end points of the welded-together side seams with respect to that of an end point of a not provided with a recess chain bag is much more advantageous. Without recess, the exploded areas of the film are still largely acute-angled together, so that sets a very strong load on the individual welded endpoint. By contrast, the two welding points of preferred embodiments of the inventive chain bag are approximately in a flat plane, since the recesses are each unfolded around the end points by 90 °. This results in an almost flat functional opening, in which already the end welds adjacent lateral welds can absorb tensile forces. This further reduces the mechanical load on the endpoints drastically.

Furthermore, this recess improves the opening geometry, since it automatically becomes more rectangular than that of the known prior art. As a result, an introduction of packaged goods in the chain bag can be made safer in the desired shape or it can, for. B. a filled frozen food can be chosen larger or it can be reduced in its outer dimensions of the film bag. This in turn has a very beneficial effect on the economy of the inventive chain bag.

The chain bag band according to the invention or the chain bag according to the invention also have an improved opening geometry and in particular also eliminate the structural weak points of the previously known chain bag.

The invention provides an optimized run such z. B. a film roll unwound sheet of chain bags by a packaging machine allows. It is a low-noise or even trouble-free manual or automatic filling allows. Even with heavy loads a reliable function is possible.

The following procedure is used to make chain bags. In this case, a chain bag on at least one extending in the lateral direction receiving area. To produce the chain bag, a front and a back sheet are brought together. Adjacent bags are formed on the receiving area, which remain connected to one another in the upper receiving area. The bags are especially intended to receive general cargo or food. The front and rear sheets are joined to the sides of the bags with at least one side seam. The receiving area is formed such that it is suitable to be guided by means of a guide device of a packaging device. In the receiving area discharge slots are introduced at regular intervals. At a predetermined distance below the relief slots in the region of the upper end point of the side seam in each case one of the front and the rear foil by cutting recess is introduced with a rounded contour in the bag.

In particular, the front and the rear film consist of a film web which is turned over. Preferably, the side seam is introduced by separation welding.

The recess can be introduced before, at the same time or even after the introduction of the side seam. Particularly preferably, the method is used to produce at least one embodiment of a previously described or subsequently described chain bag.

Hereinafter, an embodiment of the inventive chain bag is described in detail. Show it:

1 a section of a chain bag of a film web,

2 an enlarged partial view of the upper portion of second adjacent chain bag according to 1 .

3 a view of the upper open edge of the chain bag according to 2 , and

4 a deformed in a plane function opening position of two recesses.

In the figures, an embodiment of a chain bag according to the invention 1 shown here a variety of bags 31 to 33 includes, attached to a receiving area 20 connected to each other.

The recording area 20 of the chain bag 1 extends in a lateral direction 23 , The chain bag 1 is here by a front foil 21 and a back foil 22 formed on the reception area 20 juxtaposed bags 31 to 33 form.

The bags 31 to 33 are used in particular for receiving piece goods or food or for the outer packaging of frozen goods. But it is also possible electronic components or spare parts or even cat litter in the bag 31 to 33 to package.

The front foil 21 and the back foil 22 are on the sides 34 the bag 31 to 33 each with a side seam 8th connected. The side seam can be introduced as a separating weld, so that in the production of a side seam 8th the bags 31 and 32 be separated from each other there.

Here is every bag 31 to 33 open at the top. It is also possible that the upper opening is first introduced in the packaging machine. In the lateral direction 23 are the bags 31 to 33 at least in the upper receiving area 20 connected with each other. In the reception area 20 are at regular intervals 12 relief slots 9 arranged. The regular distance here corresponds exactly to the width of the individual bags 31 to 33 , Every relief slot 9 can be designed as transverse slots.

A relief slot 9 in the sense of the present invention can by a simple incision in the films 21 and 22 getting produced. But it is also possible in the production of the relief slots 9 Material from the front foil 21 and / or the rear foil 22 to remove, for example, by a material strip or the like is punched out. In that sense, a discharge slot 9 also be formed by an opening with an arbitrary geometric cross-section. Preferred is a discharge slot 9 elongated.

Distances below the relief slots 9 is in the range of the upper endpoint 7 the side seam 8th one the front foil 21 and the back foil 22 severing recess 10 in the bags 31 to 33 brought in.

Here are the relief slots 9 just above the side seams 8th intended. A small lateral offset is also possible. It is also possible that the number of relief slots 9 is greater than the number of bags 31 to 33 , For example, the distance 12 two relief slots 9 half the width of a bag 31 correspond.

Every side seam 8th a bag 31 to 33 has its own upper endpoint 7 that is here on the perimeter of the recess 10 lies.

The chain bag 1 Overall, here consists essentially of the front sheet 21 and the back foil 22 consisting of two superimposed film webs 2 or a single centrally wrapped film web 2 have arisen.

The recording area 20 is in all cases suitable to be guided by means of a guide device of a packaging device, not shown.

In or on the recording area 20 can at least one receiving device 25 be provided. The recording device 25 is in particular adapted to receive at least one guide element of a guide device of a packaging device, not shown.

For example, a guide device of such a packaging device may comprise two guide rods. In each case a guide rod is then provided, in each case a z. B. tubular receptacle 4 the front foil 21 or the rear foil 22 immerse. Then, via the immersed guide rods a targeted opening of the bag 31 to 33 be reached in succession to goods in the bag 31 to 33 bottling.

Such a tubular receptacle 4 can z. B. by an envelope 5 in the front or back foil 21 . 22 be formed. The envelope 5 can at least partially a longitudinal seam 6 exhibit.

In other embodiments, the receiving device 25 be designed differently. For example, the receiving device 25 Receiving holes or the like, in which guide elements such. B. dowel dowels of a packaging device to transport the chain bag and open before the filling process.

For example, the receiving device 25 be trained with the in the DE 699 18 992 T2 disclosed device to be processed. Then the receiving device 25 Have perforations, in which z. B. engage retaining pins of a carrier chain. Such a perforation can be formed by holes at defined intervals.

In all embodiments, the recess 10 in particular a closed circumferential line. Preferably, the recess 10 has a rounded contour which is formed as a circular recess or can be designed oval or polygonal.

The recesses 10 the chain bag 1 punched, cut out or otherwise introduced.

In particular, an upper endpoint 7 at least one side seam 8th in the deepest part of the recess 10 arranged.

In 1 is the end 14 the bag 31 to 33 located. In addition, the other end is also 13 dashed lines. The other end 13 is shown in dashed lines, since it is formed only after the filling process, for example, by a separating weld and thereby closed. Between the ends 13 and 14 extends in the filled and closed state of the finished bag 31 to 33 , It depends on the given conditions, whether during the filling process the end 13 or the end 14 are above. Basically, the filling process can be both from the end 13 as well as the end 14 respectively.

In the illustrated embodiment, the end 14 provided on the ground and there z. B. closed with a bottom seam. The upper end 13 is closed after filling. The exact course of the end 13 may be higher or lower, but is regularly below the recess 10 ,

The chain bag 1 consist here of two superimposed film webs 2 or a completely centered wrapped film web 2 , which are welded to their upper edges by section-wise side seam welding 3 open and there related, laterally and here also closed down chain bags 1 are shaped. It is also possible that the bags 31 to 33 initially open at the bottom.

The upper edges 3 point here to the formation of tubular recordings 4 for guide rods of a packaging device not shown in each case an envelope 5 with a longitudinal weld 6 on. Below the tube-shaped shots 4 is in the range above the upper endpoints 7 two side seams 8th one to the longitudinal weld 6 spaced and executed here as a parallel transverse slots discharge slot 9 arranged. Specifically, here are at regular intervals relief slots 9 intended. The lateral distance between two relief slots 9 here corresponds to the lateral width of a bag.

The recess 10 passes through both of the superimposed surfaces of the film web 2 and thus the front foil 21 and the back foil 22 , The recess 10 is executed here essentially circular. The side seams 8th Run radially from below into the recess 10 so that there are upper endpoints 7 the side seam 8th result. The side seam 8th is generated here by a separating welding of adjacent film web sections. But it is also possible that every single side seam 8th is introduced separately.

The relief slots designed here as transverse slots 9 serves the chain bag 1 to be able to open further than this without such relief slots 9 it is possible. Already by inserting the recess, the upper endpoints shift 7 the side seams 8th from the upper edges 3 out down. This increases the possible opening width.

The possible opening width increases with a corresponding spreading of the discharge slot 9 or here the transverse slits 9 further. In addition, the possible opening width by a deformation of the front sheet and the rear sheet or the film webs 2 enlarged, because the recesses 10 in the area of the upper endpoints 7 the side seams 8th at the opening of the chain bag 1 be pulled apart and around a virtual axis through the upper endpoints 7 each be folded by up to 90 °. This creates a total function opening 11 that, like this particular in 4 is shown as an example, has jump-free edges and thus spikes in the film material and in particular in the field of welded endpoints 7 reduced. As a result, the capacity is increased considerably.

The chain bags described above are produced by the described method. The chain bags can be distributed by the crate or rolled up on a roll.

LIST OF REFERENCE NUMBERS

1

chain bags

2

sheet

3

upper edge

4

admission

5

envelope

6

longitudinal weld

7

upper endpoint

8th

side seam

9

relief slot

10

recess

11

functional opening

12

distance

13

The End

14

The End

20

reception area

21

front foil

22

rear foil

23

lateral direction

25

recording device

31

bag

32

bag

33

bag

34

page

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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 assumes no liability for any errors or omissions.

Cited patent literature

• DE 202004002244 U1 [0004]
• WO82 / 00129A1 [0005]
• DE 69918992 T2 [0005, 0055]

Claims (12)

Chain bag ( 1 ) with at least one laterally extending receiving area ( 20 ) comprising a front and a back foil ( 21 . 22 ), which at the receiving area ( 20 ) juxtaposed bags ( 31 - 33 ), the bags ( 31 - 33 ) are intended, in particular, to hold general cargo or food, the front and rear sheets ( 21 . 22 ) on the sides ( 34 ) the bag ( 31 - 33 ) each with a side seam ( 8th ) and the bags ( 31 - 33 ) in the upper receiving area ( 20 ), the receiving area ( 20 ) is suitable, by means of a guide device ( 41 ) a packaging device ( 40 ), whereby in the receiving area ( 20 ) periodically ( 12 ) Relief slots ( 9 ) are arranged, characterized in that spaced below the discharge slots ( 9 ) in the area of the upper end point ( 7 ) of the respective side seam ( 8th ) one the front and the rear foil ( 21 . 22 ) separating recess ( 10 ) is introduced into the bag, and that the recess ( 10 ) has a rounded contour. Chain bag ( 1 ) according to claim 1, wherein each side seam ( 8th ) of a bag ( 31 . 32 ) has its own upper endpoint ( 7 ), which on the circumference of the recess ( 10 ) lies. Chain bag ( 1 ) according to claim 1 or 2, wherein the front and the rear film ( 21 . 22 ) of two superimposed film webs ( 2 ) or a single, in particular centrally wrapped, film web ( 2 ) consist. Chain bag ( 1 ) according to claim 1, 2 or 3, wherein in the receiving area ( 20 ) at least one receiving device ( 25 ) is provided. Chain bag ( 1 ) according to the preceding claim, wherein the receiving device ( 25 ) is adapted to at least one guide element ( 42 ) a management facility ( 41 ) a packaging device ( 40 ). Chain bag ( 1 ) according to one of the two preceding claims, wherein the receiving device ( 25 ) at least one tubular receptacle ( 4 ) having. Chain bag ( 1 ) according to the preceding claim, wherein the tubular receptacle ( 4 ) by an envelope ( 5 ) in the front or back foil ( 21 . 22 ) is formed and at least partially a longitudinal seam ( 6 ) having. Chain bag ( 1 ) according to any one of the preceding claims, wherein the recess ( 10 ) has a closed perimeter and / or is punched or cut out. Chain bag ( 1 ) according to any one of the preceding claims, wherein the recess ( 10 ) is formed as a circular recess. Chain bag ( 1 ) according to any one of the preceding claims, wherein at least one upper endpoint ( 7 ) at least one side seam ( 8th ) in the deepest region of the recess ( 10 ) is arranged. Chain bag ( 1 ) according to any one of the preceding claims, wherein at a machine opening of its upper edges ( 3 ) the upper endpoints ( 7 ) of the side seams ( 8th ) on a peripheral line of a functional opening ( 11 ), which are around the endpoints ( 7 ) of the side seams ( 8th ) by 90 ° unfolded areas of the upper edge ( 3 ) of the chain bag ( 1 ) from the edges of the recess ( 10 ) is formed. Chain bag ( 1 ) according to one of the preceding claims, wherein at least one discharge slot ( 9 ) is designed as transverse slots.

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