DE2144540A1 - MUELLSACK AND METHOD FOR ITS MANUFACTURING - Google Patents

Description

21U540

15 2o2 S / He

September 6, 1971

Windmöller & Hölscher, Lengerich i.W.

Garbage bag and process for its manufacture

The invention relates to a garbage bag, preferably made of plastic film, and to methods for its production.

The industry is increasingly given the task of disposing of household waste to take adequate account of hygienic requirements. The housewife finds it very annoying after everyone Emptying a rubbish bin to wash or disinfect it in order to avoid being thrown by when emptying rubbish left in the bucket creates an unpleasant smell or vermin in the apartment is entered. To avoid this need, it is known to put household waste in small bags packed in the garbage cans. These trash bags are about the size of a household garbage can and can be hung in this. But there these trash bags have a relatively small capacity, a significant number of bags are required to accommodate the between two garbage can emptying, for example to pack household waste in a week. Since the purchase of the garbage bags is a burden on the Housewives have quickly found out that it is cheaper to use in almost everyone

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Plastic shopping bags given free of charge when shopping to use as garbage bags, which are particularly suitable for these purposes because they are in about the size of a household trash can and in these can easily be attached.

Even when using shopping j-carry bag In as a rubbish bag, household rubbish must be proportionate

are often brought from the apartment to the garbage can, In addition, emptying the garbage cans is still a difficult and particularly unpleasant job for them the necessary personnel often only with difficulty which can be found. It has therefore been known for a long time when it comes to waste disposal Replace garbage cans with garbage bags, especially made of plastic film, which have a considerably larger capacity than the garbage bags that have to be hung in a garbage can and no longer in one after filling Rubbish bin brought, but only thrown into the garbage truck when collecting the rubbish.

Through the acquisition of the known ^relative: expensive garbage bags but the family budget is again charged, especially as the known garbage bags can only be for the same purpose and used only once ^

The object of the present invention is now, a garbage bag preferably made of plastic film trained in such a way that it can serve any other purpose before it is used as a garbage bag. makes it possible to return the garbage bags to the housewives free of charge To make available. Another object of the invention; · .-;

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is to provide suitable methods for producing such garbage bags.

The described object is thereby achieved according to the invention solved that the garbage bag is provided in the area of the opening edge with handle devices and that his The lower part is folded over to the upper part in such a length and ^ is attached to this easily detachable that its length corresponds to V ^ Ine ^ j shopping carrier bag.

The garbage bag designed according to the invention can initially be used as a normal shopping carrier bag. The conversion of the carrier bag to the garbage bag is done in the simplest way by loosening the folded wall cover and returning the garbage bag to its original length. Since the price of the inventively designed The garbage bag is not significantly higher than the price of the usual shopping bags Retailers are given free of charge when purchasing goods, as are the previous carrier bags “For the Housewives will have an increased incentive to shop at retail stores that instead of the previously customary carrier bags add the garbage bags designed according to the invention, because the housewives open In this way, avoid additional costs for the purchase of specially made garbage bags can.

From the length of the garbage bag and the length of the at the usual shopping bag in the shop concerned it depends on whether the lower part of the garbage bag is urofolded just once or several times on the upper part * In the case of multiple folding, the unfolding can envelopes standing on one or both sides of the

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Be formed sack. If the envelope parts are folded over on both sides and attached to both sack walls, in this way, the bottom of the carrier bag is reinforced at the same time.

If handle holes or the like are provided in the bag walls as carrying handle devices, the The lower part of the sack is only folded so far that the upper edge of the envelope is at a distance below the Opening edge ends. As a result, the handle devices provided in the area of the opening edges remain free and allow convenient handling of the carrier bag.

In a further embodiment of the garbage bag according to the invention, it is printed on one side in such a way that by the folding over of the lower part appears continuously on both sides of the shopping carrier bag Print image is formed. In order to create a continuous print image on both sides, it is with the known ones Carrying bags required to print them on both sides. In the case of the garbage bag according to the invention, this is not necessary, because by folding over the lower part of the bag, the printed image on it is on the other side of the shopping bag arrives where it is desired as an advertising print, while the position of the print image plays no role in the later intended use of the garbage bag according to the invention.

About the folding back of the folded bag parts when converting the carrier bag back into a garbage bag To make it easily possible, these wall parts are expediently by means of an adhesive application, e.g. a Adhesive, double-sided adhesive tape or the like, attached to the top of the sack.

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The envelopes can at least in the area along your upper edge adjacent to the opening edge of the sack and preferably also along the lower fold line be attached to the bag wall by means of a point or strip-shaped adhesive application. Through a such a course of the attachment points form the overturned Sack parts have an outer pocket open on both side edges, which can be used, for example, to hold a Umbrella or the like can be used. In the case of a strip-shaped adhesive application, this is preferred along the upper edge of the folded bag part this adhesive application to form a appropriately marked tear point interrupted along its length. This makes tearing open for the user i.e. pulling off the part of the envelope attached to the wall of the bag to form the garbage bag relieved.

In another embodiment, the folded sack parts are only attached to the sack wall with their lateral edge regions and preferably additionally along the lower fold line. Because the upper edge of the folded parts adjacent to the opening edge is not attached to the bag wall , the envelope parts simultaneously fulfill the function of outer pockets open at the top, as are known, for example, from briefcases. In these outer pockets, for example, newspapers or other objects can be transported that are not heavy enough to cause the stapling points to peel off. Depending on how much sack material is available, the folded parts can also be attached to the sack walls on both sides of the sack in such a way that outer pockets are created on both sides, which also results in a bottom reinforcement of the carrier bag. The application of adhesive in the area

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along the lower fold line is used in all cases for better shape retention in the bottom design of the carrier bag in use.

In a further preferred embodiment of the invention, the opening edges of the sack are designed to be closable. What is achieved hereby is that the sack can be hygienically closed when it is used as a shopping carrier bag, but especially when it is later used as a garbage bag. To close the opening edge, a conventional pair of carrying handles is preferably provided, since _{g can} be fixed to one another by means of fastening webs attached to the inner sides of the opening edge and preferably extending essentially over the entire length of the opening edge. The fastening webs are expediently designed as snap-in strips, for example as snap-fastener strips. Of course, other suitable closing means can also be provided for closing the bag. Thus, the invention can also be implemented on a drawstring bag, the opening edge of which can be closed with the aid of a cord.

In a further development of a known process for the production of existing plastic carrier bags, with a foil half-tubular web after the attachment of support devices, which are preferably designed at the same time as closure parts, transversely to the longitudinal direction individual carrier bags are welded and separated from the semi-tubular web is provided according to the invention, that the film sections of the web initially with

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provided with an adhesive application and after welding and severing with a wall section
predetermined length ^{Weni least} 9 _{e n} f £ h _ac folded over and
at the same time as folding over or afterwards the folded over part at least in the area of the stuck points
the sack wall is pressed on. The specified method for producing the garbage bags according to the invention is
Surprisingly simple and can be put into practice in the production of the carrier bag according to the invention without any special outlay on equipment.

The garbage bags according to the invention can
also manufacture in further development of an other known method for producing plastic existing carrier bag, whereby transverse abgeschweißt from a closed tubular film web sheet portions formed to the longitudinal direction of the tube to individual bags and separated ^J and provided with preferably formed as wearing parts carrying handle devices. In this known process
This is followed by the same process steps as were described above in connection with the first-mentioned process. It is useful in the
Practice in the manufacture of the garbage bags according to the invention is based on the first-mentioned method
because it is easier to use from the point of view of the device. In both cases, it is preferred to apply the adhesive before separating and
Welding off the film sections applied to the web that is still running. However, it can also be applied to the finished bag after it has been separated and sealed. In this case too, which of the two options is preferred in practice depends on the manufacturing conditions.

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The invention is explained in more detail in the following description with reference to the drawing, in which various Embodiments for garbage bags according to the invention and schematically the two types of process their manufacture are shown. Show in the drawing

1 to 3 schematically the individual process steps in the production of an according to the invention Garbage bag made from a closed tubular web according to a first variant of the method,

4 to 6 schematically the individual process steps in the production of the invention Garbage bag from an "open half-tubular web according to a second variant of the process,

7 to 12 schematically the individual process steps in the production of an inventive Garbage bag with side gussets made of an open film web shaped into a tube according to a Third variant of the method, wherein punched handles are used as carrying devices are provided

13 shows a view of a carrier bag with

part of the envelope attached to the wall of the carrier bag,

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14 shows a carrying bag, the wall of which was attached to the wall of the bag is that an outer side pocket is created and

15 to 17 are schematic longitudinal cross-sections

by carrying bags with differently folded envelope parts.

From the longitudinal cross-sections according to FIGS. 15 to 17 it can be seen that the sack walls have an initial length which exceeds the length of a commercially available shopping carrier bag by the length of a section designated as a whole as 3. The section 3 comprises the bottom ends 1 ', 2' of the sack walls 1, 2, which are folded around a fold line running transversely across the sack width and the folded sack part in the embodiment according to FIG. 15 with its wall 1 'on the adjacent sack wall 1 is releasably attached. The initial length of the garbage bag, ie the length of the wall ends I ¹ or 2 ^{1 of} the folded part 3 plus the length of the non-folded walls 1 or 2, corresponds to the length of a household garbage bag with a considerable capacity.

The cover part 3 is double-sided by means of an adhesive application, for example a pressure-sensitive adhesive coated adhesive tape or the like, so attached to the adjacent sack wall that he on the one hand fastened firmly enough, but on the other hand can also be removed at any time. The pressure-sensitive adhesive is in the form of points or strips on the contact surface of one or both of them

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- Io -

opposite walls of the bag wall or the envelope part applied. As can be seen from Fig. 13, the pressure-sensitive adhesive is applied all around the edges of the envelope part by adhesive strips 5,6,7, wherein the adhesive strip 7 is interrupted at 8 along the upper edge of the envelope. The glue break 8 forms a tear point for the envelope part 3, which for the user of the bag for example by a Arrow 9 can be marked and through which the conversion back into the garbage bag is facilitated.

Is the envelope part only with its lateral edge areas through the adhesive strips and attached to the sack wall along the lower fold line 4 by the adhesive strip 6 (FIG. 14), so as a result, as is the longitudinal section according to Fig. shows, an outer pocket is formed, which increases the capacity of the carrier bag. It is of course also possible To form envelope parts on the two walls 1, 2, as the embodiment according to FIG. 17 shows which outer pockets are formed on both sides of the carrier bag. The capacity of the arranged on both sides However, in the illustrated example, outer pockets are compared to the embodiment according to FIG with the one-sided cover relatively small. In contrast, there is the essential advantage that the carrying bag a reinforced base and thus a higher strength.

Due to the detachable fastening of the envelope part 3, which is also folded over several times according to the design can be formed on one side according to FIG. 16, it is possible in a simple manner to remove the carrying bag after use as a shopping bag for transporting goods in

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to convert a garbage bag by removing the envelope portion of the bag walls 1,2 solved and the garbage bag on his Starting length is unfolded. If the sack is used as a carrier bag, the lower fold line 4, which occurs when the envelope part 3 is folded over, at the same time the bottom of the carrying bag. When using it As a garbage bag, the lower bottom closure is formed by the free, closed edge Io of the envelope part, when the garbage bag is folded back to its original length is.

According to the invention, the opening edges of the sack are expediently designed to be closable. In the examples selected in the drawing, pairs 11 are attached to the inner edges of the opening handles , which preferably extend over the substantial width of the sack with fastening webs 12. As indicated in FIGS. 15 to 17, the handle elements are designed as known push-button strips. This makes it possible to close the sack quickly and safely both when it is used as a carrier bag and when it is later used as a garbage bag. It is of course also conceivable to design the bag as a drawstring bag and to close it in this way. In all of the illustrated embodiments, the upper edge Io, 13, 14, 15 of the envelope parts ends at a distance below the opening edge of the sack. The "distance is chosen so large that the carrying handle elements remain free when using the sack as a carrying bag and their attachment and handling of the carrying bag is not hindered.

The embodiment shown in Fig. 15 of the invention Garbage bag is a preferred

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Possibility of turning. On the one hand, it is easy to manufacture and, thanks to the formation of the lateral outer pocket, offers a relatively large capacity and, on the other hand, it is possible to continuously print the outer length of the garbage bag on one side, e.g. on the wall 2, 2 ', with the printed images be arranged in such a way that, after turning, a continuous printed image is created that is visible on both sides of the carrier bag.

The method steps illustrated in FIGS. 4 to 6 lead, according to a preferred manufacturing method, to the manufacture of the garbage bags according to the invention. With this manufacturing variant, the formation of side folds is not possible . The starting point is a two-ply half-tubular film, the edge edges of which 16, 17 are congruent; Of course, this method can also be based on a closed film tube * which is cut open on one side before attaching the handle elements 11 * 12 to form a half tube t camouflages the insertion of the handle elements to enable * the half tube film web conveyed in the direction of arrow 18, the width of which is the Corresponding to the length of a muil sack, the sacks are opened in the area of their marginal edges 16, 17 during manufacture. The support devices Ii, 12 are then sprayed in and welded to the walls 1, 2. Finally, a film section corresponding to the width of a garbage bag is transversely welded to form weld seams 19, 20 and a dividing line 21, the weld seam 19 never always forming the front, closed end of a subsequent tubular film section 22, 23.

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According to the invention, the moving film web is not in the region of the film sections 22, 23, 24 As shown in more detail provided with an adhesive application, the adhesive strips 6 in the area the bottom fold line 4 of the finished carrier bag (Fig. 13) and the adhesive strips 7 run in the area of the opening edge. After applying the adhesive and after the foremost film section 24 has been welded and severed, the sack section with its lower part depending on the desired type of envelope according to the embodiments according to FIGS. Ib to 17 folded over by folding the cover part 3 around the fold line 4 in a manner not shown will. Finally, the envelope part. 3 at least in the area of the traps 6, 8 in a final process step pressed against the sack wall. This can be done by means of pressure rollers 25, which is illustrated in FIG. 6 are. The method described above for producing the garbage bags according to the invention is preferred in practice, since the lockable handle elements are in this process 11, 12 can be inserted particularly easily into the semi-tubular film, which is open on one side, and there can be attached.

Another type of process is used for production of the garbage bags are based on a single-layer flat sheet (Fig. 7), which after making handle holes 26 or the like and, if necessary, of handle reinforcement inserts initially to form a half-tube is folded, whereupon the free edges 27, 28 are welded together to form a closed film tube will. These steps are shown in FIGS. Fig. 8a shows the transverse

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cut through the web according to FIG. 8. The closed film tube according to FIG. 8 is shown in Arrow direction 29 transported further, with side folds 3o are inserted into the tube. After Formation of the side folds 3o has the film tube in Cross-section the shape according to FIG. 9 a. According to the invention, analogously to the first described, preferred method applied to the running web of the adhesive in strips 5,6, then a film section 31 with the initial length a from the web, forming the weld line 32 and a parting line 33 welded and separated, then the bottom-side sack section to form an envelope part 3 'turned over and finally the cover part 3' at least in the area of the traps the assigned bag wall "pressed on. The finished carrier bag produced by this method accordingly FIG. 11 has certain advantages due to the possibility of gusset formation, can be seen in the illustrated However, do not close the form, since it only has simple grip holes 26.

Another method shown in FIGS. 1-3 has an important difference from the method indicated in Figs. 7 to 12 therein, that no finger holes in a folded flat sheet, but lockable handle elements are introduced into the front end of a closed film tube and attached there, during or after a first film section 31 "with the starting length a is welded and separated. The attachment of the adhesive strips to the film, the folding of the lower part of the bag and the final pressing of the envelope part by rollers 25.25 * in the area of the

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Stitching takes place in a manner analogous to the method described last. Although not shown, This method is preferably used when the bags to be produced are provided with side gussets should be.

In a modification of the exemplary embodiments described and illustrated, it is also possible to use the adhesive only to be applied to the finished sack. Whether the cover part is being folded over or only afterwards is pressed against the assigned bag wall, is also of the manufacturing conditions addicted.

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Claims (1)

2H4540 - 16 - afc en ta η sj back e Garbage bag, preferably made of plastic film, characterized in that it is provided with carrying handle devices (e.g. 11, 26) in the area of the opening edge and that its lower part (3) is folded _over to the upper part (1,2) in such a length as naL1 ^^^ _lt ^ - ^ _JteiaE - _<Br - _iaL ^ _> is that his is equivalent to* 2 * garbage bag according to claim 1, characterized gekenn2eichnet _r that the lower healing (3) is folded over and secured föehirfaeh one or both sides on the upper part (1/2). . 3 * Garbage bag according to claim 1 or 2, where there are handle holes or the like in the bag walls as carrying handle devices, characterized in that the lower part (3) of the bag is only turned over so that the upper edge (10 ) of the envelope (3) ends at a distance below the edge of the opening. 4. envelope bag according to any one of claims 1-3, characterized ge ™ indicates that it is printed on one side in such a way that by folding over the lower part (3) a appearing on both sides of the shopping bag, continuous print image is formed. 5. Garbage bag according to one of claims 1-4, characterized in that the folded bag parts (3) by means of an adhesive application (5,6,7) on the upper part of the sack (1,2) are attached. 309811/0098 21U540 6. Garbage bag according to claim 5, characterized in that that the envelope parts (3) at least in the area along their upper, adjacent to the opening edge of the sack Edge (10) and preferably also along the lower fold line (4) by means of a point or strip-shaped adhesive application (6,7) the bag wall (1) are attached. 7. Garbage bag according to claim 5, characterized in that the strip-shaped adhesive application (7) along of the upper edge (10) of the folded bag part (3) to form a 3MNbMaAMr marked (9) on " tear point (δ) is interrupted along its length. 8. Garbage bag according to claim 5, characterized in that the folded bag parts (3) with their lateral edge areas (at 5) and preferably additionally along the lower fold line (4) on the bag wall (1) are pinned. 9. Garbage bag according to one of claims 1-8, characterized in that that the opening edges of the sack are designed to be closable. 1O. Garbage bag according to claim 9, characterized in that to close the opening edge a conventional pair of carrying handles (11) is provided, which by means of the Inner sides of the opening edge attached, preferably substantially over the entire length of the opening edge extending fastening webs (12) can be fixed to one another. 30981 1/0098 21U540 11. Garbage bag according to claim 10, characterized in that that die'Befestigungsstege (12) as Sehnappleisten, are preferably designed as push-button isists. 12. Garbage bag according to one of claims 1-9, characterized in that that it is designed as a closable drawstring bag. 13. A method for producing enveloping sacks according to any one of claims 1-12, wherein on a semi-tubular film web after the attachment of support devices, which are preferably designed as closure parts at the same time Individual sack workpieces welded and separated transversely to the longitudinal direction of the semi-tubular web v / earth, characterized in that the film sections of the web are initially provided with an application of adhesive and after welding and severing with a wall section of predetermined length at least simply folded over and at the same time as folding over or afterwards the folded over part at least in the area of the Traps is pressed against the bag wall. 14. A method for the production of garbage bags according to any one of claims 1-12, wherein from a closed Film tube web formed film sections transversely to the longitudinal direction of the tube to individual sack workpieces welded and separated and with preferably designed as locking parts carrying handle devices are provided, characterized in that the film sections of the web initially with a Adhesive application provided and after welding and. Cut off with a wall section forwards 309811/0098 BATH ORIGINAL Length at least simply folded over and at the same time with the folded over or afterwards the folded over part at least in the area of the adhesive points on the sack wall is pressed. 309811/0098