WO2008049654A1

WO2008049654A1 - Bag with opening aid and carrying device

Info

Publication number: WO2008049654A1
Application number: PCT/EP2007/056388
Authority: WO
Inventors: Dirk Oberdorf; Wolfgang Barthel
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2006-10-26
Filing date: 2007-06-27
Publication date: 2008-05-02
Also published as: DE102006051005A1

Abstract

The invention relates to a flexible packaging means, particularly a bag or sack, for pourable material, comprising: A bottom (15), on which the packaging means (1) can be set in the filled state. A body (9), comprising: a) a first broad side section (4), b) a second broad side section (5) opposite the first side section (4), c) a first narrow side section (10), d) a second narrow side section (11) opposite the first short lateral side section (10). The invention further comprises a top (3), lying opposite the bottom (15) and has an opening, via which the packaging means (1) can be filled with product. The opening is closed tightly by a closure means (8) in the filled state. The invention further comprises an opening aid (12) extending at least partially across the body (9), substantially parallel to the bottom (15), and a carrying device (13) attached to the packaging means (1), wherein the carrying device (13) is attached underneath the opening aid (12) to the body (9) of the packaging means (1) such that the introduction of force from the carrying device (13) onto the packaging means (1) is located on the carrying device (13) beneath the opening aid (12) when the packaging means (1) is carried as intended.

Description

Bag with opening aid and Traqevorrichtunq

The invention relates to a flexible packaging for pourable products. In particular, the invention relates to a bag with an over the lateral surface of the bag at least partially extending opening aid, such as a perforation, and arranged on the lateral surface of the bag carrying device such as a mounting bracket made of flexible material.

Such packaging bags are e.g. used to hold powdered detergent. A major advantage of packaging bags of the type described input is that the empty bag can be folded flat after use and disposed of in a space-saving manner, as well as a significantly lower packaging material consumption compared to other packaging materials with high product protection by a low water vapor permeability.

Known packages of this type, for example the applicant, are closed at the top with a continuous head weld which connects both the broad side part ends and the folded side fold ends of the narrow side parts. The outer regions of the head weld are therefore each four-ply, while the head weld is double-layered in its central region, ie only the broad side parts together. This means that the opening of the packaging without tools is virtually impossible. An opening by train without tools is possible by the user only in the middle area between the gussets, where the weld is two-ply. In the transition region between the two-ply and four-ply weld zone, cracking occurs when opening by pulling. These cracks continue uncontrolled towards the bottom surface. To be able to empty the contents safely, it is therefore possible to open the pack only with a tool, such as a pair of scissors. Therefore, a mark is provided on the packaging, which indicates the user to the use of the scissors.

From WO 03/010067 A1 a packaging bag is known, which is closed on the outer edge side in each case with a weld, wherein the weld in the central region has two layers and four layers in the two outer regions. In order to facilitate the simplest possible opening of such a bag without aids, a line of weakness, for example in the form of a perforation, is provided at a distance from the head weld in the region of a broad side part. However, such a weakening line offers the risk of accidental opening and product leakage, for example during transport or goods handling.

In order to increase the wearing comfort of such bags for the user, the flexible packaging means may be provided with carrying aids, such as with handle holes, carrying strips, case handles, a bow handle or the like.

From DE3629563, for example, a bag is known in which loop handles are sealed on the inside of the bag.

In order to prevent the handle from being sealed and the associated additional manufacturing step, the carrying aids are also formed integrally with the bag. Such bags are known for example from EP349050. In this case, the opposite broad side parts of the bag are welded or sealed together in the head area and an overlying the weld seam protrusion of the welded wide side parts with a grip hole, for example by punching, provided and as a handle educated. A disadvantage of this solution is that after opening such a bag, the handle can not be used because it is either cut off to open the bag or separated from at least one broad side part. Furthermore, a relatively high material usage is necessary for the formation of such a handle.

Object of the invention

The object of the invention is therefore to overcome the disadvantages known from the prior art and to provide a flexible packaging with an opening aid, which provides the largest possible removal opening, and with a carrying device, wherein the carrying device and the opening aid are configured such that a accidental opening of the flexible packaging is prevented when wearing.

The object is achieved by a flexible packaging with the features of claim 1.

An advantage of the flexible packaging means according to the invention is that the film thickness is not determined by the necessary carrying capacity of the grip elements. In the case of the flexible packaging means known from the prior art, in particular in embodiments in which the handle is formed by a handle opening in the packaging film, the film thicknesses are largely determined by these grip elements, since stress peaks occur in the material areas around the handle opening a corresponding material thickness must be recorded. This regularly leads to a high use of materials, which is not desirable from an economic and ecological point of view. - A -

The fact that the carrying device according to the present invention is not formed integrally from the packaging material material means that substantially lower material thicknesses can be selected, whereby costs and environmental impacts are perceptibly reduced.

For the purposes of this application, a flexible packaging means is a packaging material which substantially alters its shape even under light load when used as intended.

In particular, the flexible packaging is designed as a bag or sack.

The bag may be selected from the group of bottom bags, block bags, block bags, block bottom bags, block bottom bags, floor bottom bags, bottom fold bags, cross bottom bags, round bottom bags, stand-up pouches, double bags, window bags, flat bags, flap bags, flap pocket bags, conical bags, tubular bags, gusseted bags, pleated bags, sealed edge bags, Triangular seal bag, two-seam bag, flap flap bag, carrying bag and / or valve bag.

The bag may be selected from the group of single-use bags, sack bags, pleated bags, flax sacks, cross-bottom sacks, multi-layer sacks, round bottom sacks and / or valve sacks.

Most preferably, the flexible packaging material consists of a coextruded composite film of OPP and PE. It is likewise preferred to use composite films of different polyethylenes and / or monoaxially oriented polyethylenes. It is also conceivable to use Einschichtpolyethylenfolien. An opening aid in the sense of this application is a packaging center part that is incorporated in the fuselage wall of the flexible packaging material and allows the opening of the packaging without the aid of opening means. This also includes any type of punctiform and / or linear material weakening, as may be caused for example by material removal, material displacement, material manipulation or the like.

The opening aid may be formed, for example, as a perforation, tear flap, tear tab, tear seam, tear strip, tear tape, tear-open, tear-open, scribe tear line and / or fuselage tearing strip.

In particular, the opening aid can be designed as a laser perforation or a mechanical perforation.

In order to facilitate the opening process and to offer the user a sufficiently large possibility of intervention for his hands, the opening aid runs parallel to the floor substantially completely over the entire width of a broadside part.

In order to improve the transport and storage and to ensure a good drop resistance, so that the sealing seam formed as a closure means, for example, does not burst in the case of packaging from a shelf, it is preferably provided that the head is folded and fixed to the bag outside. The fixation can be done for example by a hot air application. This transfer of the head prevents the load occurring during the fall process from directly striking the sealing seam. The occurring forces are rather directed to the folded head, the sealing seam is spared. It is also preferred to arrange the opening aid in the head region of a broadside part in such a way that the opening aid is positioned on the inner side of the folded-over head. As a result, in addition to the improved drop resistance, improved protection against the entry of moisture or the escape of perfume is achieved.

For the closure of the opening formed by the tearing open of the opening aid, resealing means can be arranged on the packaging means. The Widerverschließmittel may be formed, for example, as an adhesive strip.

The carrying device can be designed as a fall handle, handle cover, handle hole, mounting bracket, support bar, carrying handle or bottle carrier. In particular, the carrying device is formed as a plastic band, whose ends are fixed to the hull of the packaging. The fixation is preferably carried out by material bond, for example by gluing, welding, sealing or the like. It is particularly preferred to form the plastic tape from a monoaxially oriented plastic.

The invention is explained in more detail below by way of example with reference to the drawing. This shows in:

Fig.1 Flexible packaging with opening aid and carrying device in a perspective view LIST OF REFERENCES

1 flexible packaging / packaging

2 tubular bags

3 head

4 broadside part

5 broad side part

6 gusset

7 gusset

8 sealing seam

9 hull

10 narrow side part

11 narrow side part

12 opening aid

13 baby carrier

14 adhesive section

15 floor

A package for pourable products, for example powdered detergent, is generally designated 1 in FIG. This packaging consists of a tubular bag 2, which is closed with a bottom seam, not shown. At the head end, the tubular bag 2 is initially open and is filled with pulverulent product, and only to the extent that a head 3 lying flat in the filled state remains. This head 3 is formed by two broad sides lying broad side parts 4 and 5 and both sides of the wide side parts 4, 5 inwardly narrow side wall parts, wherein each side gusset 6 abuts the one broad side part 4 and the other gusset 7 on the other broad side part 5.

The filled bag 2 or the flat lying head 3 is closed by means of a sealing seam 8 extending essentially transversely to the longitudinal axis of the bag. Below and parallel to the sealing seam 8, the opening formed as an opening 12 perforation runs in the broad side part 4. The perforation 12 extends substantially over the entire width of the broad side part 4, so that when tearing the perforation 12 by the user the largest possible opening is formed, the a convenient removal of product from the opened bag 2 allowed. The perforation can be generated by laser or mechanical tool.

It is advantageous to arrange the opening aid 12 above the filling level H _{f of} the bag 2 in order to prevent an uncontrolled escape of product when the bag 2 is opened. The opening aid 12 can, as shown in FIG. 1, be arranged on the outwardly directed surface of the broad side part 4 with the head 3 turned over. However, it is also possible to position the opening aid 12 with folded head 3 on the inwardly facing surface of the broad side part 5.

A carrying device 13 in the form of a so-called "taped handle" is fixed to the bag 13. The carrying device 12 consists essentially of one Plastic band whose ends are fixed to the hull 9 of the bag 2 below the opening aid 12.

The ends of the plastic strip 13 are materially connected via the adhesive portions 14 to the bag 2. In Fig. 1, the ends of the plastic strip 13 are respectively attached to the broad side parts 4 and 5 of the fuselage 9. However, it is also possible to arrange the ends of the plastic strip 13 on the opposite narrow side parts 10 and 11.

The plastic band 13 is preferably made of a monoaxially oriented plastic.

Claims

claims

1. Flexible packaging material, in particular bag or sack, for pourable material comprising D a bottom (15) on which the packaging material (1) can be placed in the filled state, D a hull (9) comprising a. A first broad side part (4), b. A second broad side part (5) which is opposite to the first wide side part (4), c. A first narrow side part (10), d. A second narrow side part (11), which lies opposite the first narrow side part (10),

D A head (3) facing the bottom (15) and having an opening through which the packaging means (1) can be filled with product, wherein the opening in the filled state of the packaging means (1) by a closure means (8) fixed is closed,

D is an opening aid (12) extending over the hull (9) at least in sections, essentially parallel to the floor (15), and

D a carrying device (13) fixed to the packaging means (1)

characterized in that

the carrying device (13) is fixed below the opening aid (12) on the fuselage (9) of the packaging means (1) in such a way that the introduction of force from the carrying device (13) onto the packaging means (1) during proper carrying of the packaging means (1) on the Carrying device (13) below the opening aid (12) is arranged.

2. Packaging according to claim 1, characterized in that the opening aid (12) is designed as a perforation.

3. Packaging according to claim 2, characterized in that the perforation is formed by laser perforation.

4. Packaging according to claim 1, characterized in that the carrying device (13) is formed as a plastic band, whose ends are fixed to the hull (9) of the packaging (1).

5. Packaging according to claim 4, characterized in that the plastic band (13) is formed from a monoaxially oriented plastic.

6. Packaging according to claim 4 or 5, characterized in that the ends of the plastic strip (13) are fixed by an adhesive connection to the packaging.

7. Packaging means according to one of the preceding claims, characterized in that on the packaging means (1) Widerverschließmittel are arranged which cause the closure of the opening formed by the tearing open of the opening aid (12).

8. Packaging according to one of the preceding claims, characterized in that the packaging is designed as a bag or sack.