WO2005108237A1

WO2005108237A1 - Bag comprising a part for drinking or pouring

Info

Publication number: WO2005108237A1
Application number: PCT/CH2004/000273
Authority: WO
Inventors: Friedrich W. Mumenthaler
Original assignee: Cellpack Ag
Priority date: 2004-05-06
Filing date: 2004-05-06
Publication date: 2005-11-17

Abstract

Disclosed is a bag (1) which is used as packaging for liquids and in which an extractable drinking straw or pouring piece (2) is provided that is disposed within a guiding element (3) on the edge (4) of the bag. This allows a compactly stored drinking straw or spout to be provided while handling of the bag is improved when drinking or pouring the liquid.

Description

Bags with drinking or pouring parts

background

The invention relates to a bag for holding liquid, comprising a drinking straw or pouring part. The invention further comprises a drinking straw or pouring part for bags.

State of the art

Bag packaging for liquids is advantageous for many applications and in particular has a low packaging volume and packaging weight and, if appropriate films are used for the bag, has excellent barrier properties for protecting the packaged goods and is easy to dispose of. Bags can be provided with a drinking straw to allow consumption directly from the bag as beverage packaging. Such bags are known for example from US-A-3 730 336, US-A-6 076 967, EP-A-0 997 392, DE-A-101 64 732 and DE-A-35 00 414. Some of these bags are also known designed as a bag with a spout, with which the contents of the bag can be poured out into another vessel, for example also with a drink, or when the bag is used as a refill for a refillable container, the bag being, for example, a liquid detergent, a fabric softener or a Contains shower gel. Bags of the type mentioned can be reclosable, for which purpose snap-on or screw-on caps are known, for example in the documents US-A-6 076 967 and DE-A-35 00 414 mentioned. EP-A-0 515 896 shows a bag, in which a tube arranged in the bag corner directly in the bag film material can be pulled out in order to form a spout. It shows, however, that the handling, especially when pouring the bag contents and when closing - if this is provided at all - is not optimal.

Presentation of the invention

The invention has for its object to provide an improved bag of the type mentioned. This is achieved in that the drinking straw or pouring part is arranged along a guide, which is arranged in the edge of the bag as a separate guide, which is not formed by the films of the bag, and can be moved from a closed position into a drinking or pouring position. In this way, the straw or pouring part can only protrude very slightly from the bag in the closed position, so that handling and storage of the bags is not made more difficult. In the drinking or pouring position, on the other hand, the drinking straw or pouring part can protrude far from the bag and yet be guided tightly therein, so that drinking and, in particular, pouring out is easy without a special, separate extension part being provided , The drinking straw or pouring part can preferably also be moved back into the closed position in its guidance. It is also possible to provide a closure means as a plug-on or screw-on closure means for the drinking straw or pouring part, so that it can be reclosed in the closed position. It is particularly preferred, however, if the drinking straw or pouring part is closed automatically when pushed back into the closed position. This is particularly easily achieved if the tubular straw or pouring part is the dispensing opening has on its lateral surface and is closed on the end face, so that in the closed position the discharge opening is closed by the guide. It is further preferred if the drinking straw or pouring part has a locking device which prevents it from being pulled out completely from the bag. Furthermore, the straw or pouring part can have a bellows. The guide is preferably formed by a guide part that can be welded into the edge of the bag. With its guide surface, this can be matched exactly to the tubular straw or pouring part, so that there is a high level of tightness. A tube attached to the edge of the bag can also serve as a guide. Preferably, a guarantee closure part which can only be opened by means of destruction is further provided on the bag, access to the drinking straw or pouring part being released only when this guarantee closure part is opened. The bag is preferably designed as a standing bag, but it can also be a flat bag. Another object of the invention is to enable the production of bags with good handling properties. This task is done with a straw or

Spout arrangement according to claim 16 achieved. The drinking straw or pouring arrangement which can be fastened in the edge of the bag makes it easy to produce packaging bags with the aforementioned advantages.

BRIEF DESCRIPTION OF THE DRAWINGS Further configurations, advantages and applications of the invention result from the dependent claims. Sayings and from the following description based on the figures. 1 shows a schematic view of a bag according to the invention with a drinking straw or pouring part in the closed position; Figure 2 shows the bag of Figure 1 in the drinking or pouring position of the straw or pouring part; Figure 3 shows part of a bag according to Figure 1 with an additional guarantee closure; FIG. 4 shows a partially sectioned illustration of a drinking straw or pouring arrangement in the closed position; Figure 5 shows the arrangement of Figure 4 in drinking or. Ausgussstellung; Figure 6 is a front view of the arrangement; 7 shows an embodiment of the arrangement with an articulated bellows; FIG. 8 shows a further embodiment of a drinking straw or pouring arrangement; and FIG. 9 shows a further embodiment of the guide in the edge of the bag.

Ways of Carrying Out the Invention

Figure 1 shows a schematic representation of a bag 1, which has welded and / or heat-sealed and / or glued edges 4 in a known manner, whereby a cavity 10 is created in the bag for holding a liquid. The bag can be equipped in a known manner with a bottom film 5, only indicated, so that a standing pouch is formed in a known manner. All known conventional plastic films and film composites which are used for the production of the bag and which have the desired barrier properties for the liquid to be stored in the bag are suitable as the material for the bag exhibit. The pouch can be a beverage pouch, a pouch for holding liquid detergent or shower gel or other liquid products. The size or the volume of liquid to be accommodated in the bag can vary widely and range, for example, from one deciliter to several liters. The basic design and manufacture of such bags is known to the person skilled in the art and is therefore not further explained here. According to the invention, a guide 3 separate from the bag material is now provided in the bag edge 4, which slidably receives a drinking straw part 2 or a pouring part 2 in the guide, this part 2 being essentially liquid-tightly enclosed by the guide. In Figure 1, the guide 3 is shown with the straw or pouring part 2 in the upper part of the bag. With the guides 3 'only indicated with broken lines, it is to be shown in FIG. 1 that the guide and thus also the part 2 can be arranged anywhere along the edge of the bag, for example in a corner area along a side wall, along the bottom area or in the case of a standing pouch, even in the bottom of the pouch, the bottom of the pouch also being considered as the edge of the pouch for a standing pouch in the context of the present application. The guide 3 is tightly glued, welded or hot sealed in the edge of the bag, which is explained in more detail below. The drinking straw or pouring part 2 can be pulled out from the closed position shown in FIG. 1 in the direction of arrow A, the part 2 shifting in the guide, so that the position of FIG. 2 is reached in which the part 2 forms a drinking straw or a spout that facilitates the removal of the liquid from the bag. A handle part 6 can be provided at the front (outside the bag) end of part 2. An end stop preferably prevents the part 2 from being completely pulled out of the bag. Part 2 can be taken from the drinking or pouring position of Figure 2 are also pushed back in the direction of arrow B in the bag. The drinking straw or pouring part 2 is preferably opened automatically when it is pulled out in the direction of arrow A, so that the liquid can flow out of the bag, and is closed again when it is pushed in in the direction of arrow B, so that the bag is again essentially liquid-tight is. This opening and closing function is explained in more detail below. FIG. 3 shows that a guarantee closure 37 is preferably provided above the drinking straw or pouring part 2. The guarantee closure 37, which is formed, for example, from bag material, can be separated, for example along a weakening line 38, and, if uninjured, indicates in a known manner that the bag has never been opened. After removing the guarantee closure 37 with the aid of the weakening line 38, the drinking straw and pouring part 2 can be gripped and forms the outlet from the bag, which can be closed again. FIGS. 4-6 now show a first preferred exemplary embodiment of a drinking or pouring arrangement which can be used in a bag in the manner described and thus can form a bag according to the invention or a bag according to the exemplary embodiments shown in FIGS. 1-3. FIG. 4 shows the position of the arrangement in which the drinking straw or pouring part 2 is pushed completely into the guide 3, so that the position shown in FIG. 1 is obtained in which the drinking straw or pouring part 2 is fully inserted into the bag. Figure 5 accordingly shows the position of Figure 2, in which the drinking straw part or pouring part 2 is fully extended and is used as a drinking straw or pouring spout. FIG. 6 shows a front view against the direction of arrow A in FIG. 4. The drinking straw or pouring part 2 is a tubular hollow body, preferably of round cross section. Other cross-sectional shapes are however also possible. This part 2 is guided in the guide 3, which is adapted with its inner shape to the outer shape of part 2. The outer wall of part 2 is calibrated with the inner wall of the guide 3 in such a way that it results in an essentially liquid-tight fit, which, however, still allows the displacement in the direction of arrows A and B without too much effort. To ensure the sealing effect, however, special seals could also be provided between the guide 3 and the part 2, for example one or more O-ring seals. At its front end, the drinking straw or pouring part 2 is provided with the grip part 6 already mentioned, which enables gripping and pulling out in the direction of arrow A of part 2 from the guide 3 or from the bag and is preferably configured above the guide , so that the grip part 6 defines the inserted end position. The guide 3 can be a tube arranged in the edge of the bag, which will be explained in more detail. In the embodiment shown in FIGS. 4-6, the guide is, however, a welded-in part which has tapered wings 13 and 14, which come to lie between the film parts of the edge 4 of the bag and gradually separate these from one another and also weld-in or form heat-sealing or adhesive surfaces to which the pouch foils of the edge 4 can be fastened when the pouch is formed, so that the guide 3 can be fastened in the pouch edge 4 in a liquid-tight manner. This is basically known from conventional spouts that can be welded into the edges of the bag and will not be explained further here. In the embodiment shown, the part 2 is provided with a locking means 9 which forms an edge which comes into contact with the surface 19 of the guide 3 when the part 2 is pulled out, so that further pulling out as shown in FIG. 5 is not possible. The locking means can be pressed together through slots 17 in such a way that part 2 with its The lower end 8 can be inserted from the outside of the bag through the guide 3, the diameter of the part 2 adapting in the rear (bag-side) end through the slot or slots 17 and springing out after passing through the guide 3, so that the locking means 9 no longer allows removal or disassembly. In the embodiment shown, an outflow opening 7 or, if appropriate, a plurality of such outflow openings is arranged in the wall or in the jacket 11 of the drinking straw or pouring part 2, and this is closed on the end side. When the liquid is withdrawn through the drinking straw or pouring part 2 in the position shown in FIG. 5, there is a liquid flow according to the arrows C, ie the liquid enters the hollow part 2 at the rear end 8 and leaves it outside the bag the lateral outflow 7 or possibly the several lateral outlets 7. The part 2 is closed at the end so that there is no liquid outflow in the direction of the arrow A (FIG. 1). This embodiment has the advantage that when the part 2 is pushed into the guide 3 according to FIG. 4, the drinking straw or pouring part 2 is automatically closed, in which the at least one outflow opening 7 is closed by the inner wall of the guide 3. In the position of FIG. 4, this results in a liquid-tight closure of the bag in the basic position of FIG. 1, this being the case both before the first removal of liquid from the bag, and also when it is closed again by pushing it in the direction of arrow B after removal of liquid , In this preferred manner, a pouch that is easy to handle and reclosable for liquid removal can be created. At most, the guarantee closure can be provided by the bag material according to FIG. 3. A guarantee closure can, however, also be provided on part 2, which is shown in FIG. 5 is indicated by a snap-on closure part 22 above the removal opening 7, which must be opened by a pointed object before the first liquid removal or which - arranged outside - can be removable. The drinking straw or pouring part 2 can, however, also have a conventional front-side outflow instead of the side outflow 7, in which case an additional closure means is preferably provided. This is indicated schematically in FIG. 4 by the pin 25, which could be captively fastened to the part 2 with a band 26 and which can close the removal opening (not shown) in a reclosable manner. Instead of such a pin, a screw cap could also be provided at the front end on part 2. FIG. 7 shows a further embodiment in a representation similar to that of FIG. 5, the same reference numerals again designating the same elements. Again, a jacket-side outflow opening 7 is provided on the pouring part 2. In this embodiment, this is provided with an articulated bellows 28, which allows the illustrated bending of the part 2 in its position pulled out of the guide 3. This can be particularly advantageous if the bag is a refill bag and the contents of the bag are to be transferred to a container 27, which is indicated only by its neck area with broken lines. FIG. 8 shows a further exemplary embodiment in which the drinking straw or pouring part 2 is in turn arranged in the guide 3. A rear locking device can also be provided here, but this is not shown. At its front end, part 2 is here provided with a compressed and, for example, welded or heat-sealed guarantee closure part 29, which is separated from the hollow part 2 at a predetermined breaking point 29 ′ designed as a weakening line can. As a result of this separation, part 2 is opened on the end face or resumes its hollow cylindrical shape on the end face, so that a removal opening on the end face is formed. This opening, however, only takes place when the part 2 has been pulled out into its removal position along the guide, for which purpose the squeezed and sealed part 29 can also serve as a grip part, which pulled-out position is not shown in FIG. 8. In this embodiment, the reclosability is omitted or a separate closure part 25, 26 can be provided, which is attached to part 2 or to the guide 3 and is only indicated schematically in FIG. 8, and allows the bag to be reclosed. FIG. 9 shows a further embodiment, in which a tube which is fixed in the bag edge 4 and cannot be pulled out forms the guide 3 for the drinking straw or pouring part 2. The same reference numerals again designate the same elements as have already been mentioned. FIG. 9 shows the bag 1 with film parts 1 'and 2', which are connected to one another along the bag edge 4, which also forms an enlarged edge in the corner area in which the tube as a guide 3 is welded in completely or only in sections or at points, glued in or fastened by heat sealing. The tube 3 can be fastened as liquid-tight as possible in an area 40 of the edge which is preformed, for example, by embossing or deep drawing. The figure shows the pulled-out position of the drinking straw or pouring part 2. A guarantee closure 37, 38 formed by the bag material and having a cavity 39 is again similar to that of FIG. 3 and must of course be removed before pulling out part 2, which is not shown in FIG. 9. While preferred embodiments of the invention are described in the present application, it should be clearly pointed out that the invention is not based on this is limited and can be carried out in other ways within the scope of the following claims.

Claims

claims

1. bag (1) made of film material for receiving a liquid, with a drinking straw or pouring part, characterized in that the drinking straw or pouring part (2) along a part (2) which is substantially liquid-tight and different from the bag film material (3 ) is guided in the edge of the bag (4) and can be moved from a closed position into a drinking or pouring position.

2. Bag according to claim 1, characterized in that the drinking straw or pouring part (2) from the drinking or pouring position can be moved back into the closed position.

3. Bag according to claim 1 or 2, characterized in that the drinking straw or pouring part can be closed by a closing means (25), in particular by a closing means permanently attached to the drinking straw or pouring part and in particular by a pluggable or screwable closing means.

4. Bag according to claim 1 or 2, characterized in that the drinking straw or pouring part is automatically closed when pushed back into the closed position.

5. Bag according to claim 4, characterized in that the straw or pouring part has at least one outlet opening (7) in its jacket (11) and is closed on the front end side, such that in the closed position the guide (3) the outlet opening (7) of the straw part or pouring part closes.

6. Bag according to one of claims 1 to 3, characterized in that the drinking straw or pouring part has a removable guarantee closure (22).

7. Bag according to claim 6, characterized in that the guarantee closure is formed by a squeezed and welded bendable front part (29) of the drinking straw part or pouring part.

8. Bag according to one of the preceding claims, characterized in that the bag forms a removable guarantee closure (37, 38) lying above the drinking straw or pouring part.

9. Bag according to one of the preceding claims, characterized in that the drinking straw or pouring part has a handle part (6), in particular at its front, closed end.

10. Bag according to one of the preceding claims, characterized in that the drinking straw or pouring part has a bellows (28).

11. Bag according to one of the preceding claims, characterized in that the drinking straw or pouring part has a locking device (9) which prevents the drinking straw or pouring part from being completely pulled out of the bag through the guide.

12. A bag according to claim 11, characterized in that the locking means (9) can be compressed elastically in such a way that the drinking straw or pouring part can be inserted through the guide (3) in the closing direction.

13. Bag according to one of the preceding claims, characterized in that the guide is designed for fastening, in particular by welding or heat sealing or gluing in the edge of the bag, and in particular a guide part adapted to the drinking straw or pouring part and at least one fastening part (13, 14) has, in particular a two-part fastening part protruding from the guide part.

14. Bag according to one of claims 1 to 12, characterized in that the guide is formed by a tubular insert (3) which between opposite shaped portions (40) of the bag edge (4) is attached.

15. Bag according to one of the preceding claims, characterized in that it is designed as a standing pouch.

16. A straw or pouring arrangement for packaging bags, characterized in that a guide (3, 13, 14) designed for fastening in the edge of the bag and a drinking straw part or pouring part (2) arranged in the guide in an essentially liquid-tight manner.

17. Drinking straw or pouring arrangement according to claim 16, characterized in that the guide is formed by a tube which can be placed in a shape of the edge of the bag or by a weld-in part (3) which can be welded into the edge of the bag and has tapering sections (13, 14).

18. Drinking straw or pouring arrangement according to claim 16 or 17, characterized in that the tubular drinking straw or pouring part is closed on one side at the front, optionally with the formation of a handle part (6), and has at least one pouring opening (7) arranged on the jacket side, which in one of the sliding end positions of the drinking straw or pouring part is closed by the inner wall of the guide.