IE55325B1

IE55325B1 - Package

Info

Publication number: IE55325B1
Application number: IE1865/84A
Authority: IE
Original assignee: Norddeutsche Faserwerke Gmbh
Priority date: 1983-07-20
Filing date: 1984-07-19
Publication date: 1990-08-01
Also published as: PT78933A; DK354584A; EP0132755A3; ES280565Y; ATE37518T1; ES280565U; IE841865L; DK354584D0; GR81441B; EP0132755A2; PT78933B; EP0132755B1; DE3474284D1; DE3326088A1

Abstract

1. Packaging, especially sack-shaped packaging, made from foil-like material, with at least one fold starting from the opening end of the packaging, and in the case of multi-layered packaging involving all the layers, characterized in that the fold (4) runs at right angles to the filling and emptying opening and the free edges of both parts of the fold formed in the packaging are held closed by means of a connection (3) made on both parts of the fold (5, 6), which is not open during the filling process, but which can be broken for emptying.

Description

The present invention concerns packages of film-type material which have particular advantages in the packing of non-pourable materials.

Such materials are for example more or less irregularly formed objects such as machine parts, tools and boxes, or materials which felt under pressure, such as textile fibres and turf.

If the package lies tight against these goods, e.g. after the goods have been brought into the package by means of a press or because the foil-type package has been crumpled after insertion of the objects to be packed, it is not possible or is only possible with greater consumption of time to unpack the goods without destroying the package e.g. by cutting. The package is therefore generally unfit for further uses.

The present invention has the object of making packages of the above described kind re-usable. The present invention provides a package having a fold extending from the opening end of the package wherein the fold is held closed by a connection which is secured to both parts of the fold and which does not open during filling of the package but which is however separable. For removal of the packed goods out of the package, the connection between the two parts of the fold is split up and the package thereby broadens itself by the width of the film included in the fold, so that the packed goods can be easily taken out. The package as such remains in being and can be used again e.g. as a container for collecting waste such as dust or rubbish, or as a protective covering.

As a connection between the two parts of the fold which hinders opening of the fold, one can use a zigzag-shaped thread which extends between the two parts of the fold and is secured to them. Also it is possible in many cases to hold the two parts of the fold together by a seam e.g. a chain seam or by welding e.g. a spot weld seam.

The connection may suitably be formed by a strip, especially of the same material as the remainder of the package, which is secured to the two parts of the fold by stitching, adhering or welding. It can be cut up e.g. with a knife or a pair of scissors between the two parts of the fold.

In accordance with a further development of the invention, the separating of the connection is facilitated in that it is perforated or has a toothed or indented separation strip or a tear strip or a tear thread. The opening of the fold can also be made possible if the connection is welded or adhered at spots and therefore can easily be torn off. Furthermore, a releasable adhesive strip can serve as the connection and it also can be easily pulled away.

The strip forming the connection between the two sides of the fold can be applied either to the inner (lower) or preferably to the outer (upper) sides of the fold. The fold itself can be a single or a double fold.

The film-type package can consist e.g. of paper. Preferred however are packages of plastics films. Both single and multilayer films come into consideration.

With tubular films the fold may suitably be formed in the tube of film and provided with the connection, before the individual packaging units are produced by division of the tube. If a tube or a bag is formed from a web of film, the fold can be laid on one side of the web and the other side of the web can be secured to the two parts of the fold, so that this side of the web itself forms the connection between the two parts of the fold.

Packages, especially bag-type packages with side folds extending from the opening end of the package are known e.g. from DE-OS 29 47 784. The folds there serve to give the bag in the filled condition an essentially rectangular cross sectional shape. For this purpose the side parts of the fold are not held together by means of a connection. In accordance with DE-OS 30 43 491 the opposing inner sides of a side fold of a side-folded tube which is to serve for manufacture of side-folded bags are temporarily joined - 3 - 10 15 20 25 30 to one another e.g. at spots by means of a clinging adhesive so that the unfilled tubes can be transported and, if appropriate, divided up without being disturbed or disarranged. At the latest on filling the side-folded tube, the temporary connection of the two folded sides opens. In the present package, on the other hand, the fold serves to increase the size of the bag before it is emptied. The connection is therefore secured to both parts of the fold in such a manner that it does not come away during the filling of the package but can be separated after the use of the package as directed. Finally, multilayer bag-type packages are known e.g. from DE-PS 30 20 052, DE-OS 26 09 910 and DE-GM 71 38 576, whose inner layer has a compensation fold, also in the filled condition, while the outer layer does not show any fold. Thus a tearing of the inner layer is avoided e.g as a result of stress during filling of the bag or because of different expansion behaviour in the various layers forming the package. The fold in the inner layer in these packages is held together by the outer layer; to facilitate the removal of the contents, stronger outer layers must therefore as a rule be cut up. At best the inner layer of the package may be re-usable but it is less useful for the purposes mentioned at the outset. Therefore in the case of a multilayer package in accordance with the invention, the fold is formed through all the layers of the package including the outer layers and the connection holding the fold closed is applied particularly to the outer layer. Packages according to the invention are shown in the accompanying drawings. Figure 1 shows a view of a package. Figure 2 shows the fold held closed in accordance with the invention, as a section along the line A-B and Figure 3 shows the fold after separation of the connection. Other forms of connections or folds are reproduced in Figures 4 and 5. Finally in Figure 6, a fold is shown which can be formed e.g. after the bringing together of a web of film around the article to be packed or in the production of a bag from a web of film.

The film-type package 1 in bag form is closed at the end 2 e.g. by welding or by adhesion. From this opening end, the band 3 covering the two sides of the fold 4 extends to the bottom of the bag. Both longitudinal sides - 4 - 35 of the band are adhered or welded at 5 and 6 to the side parts of the fold, so that the fold cannot open. Only after separation of the band (Figure 3) does the fold open and facilitate the removal of the packed article.

In Figure 4, the connection 3 is formed by a chain stitch, in Figure 5 the fold is adhered together on one row with a tear strip as the connection 3.

In contrast to Figure 2, 3, 4 and 6 which show double folds, a single fold is shown in this case. Also with this connection the fold can be laid as a double fold, just as it can be a single fold in the other cases.

While in Figures 1-5 the fold formation is shown especially for tubular bags, Figure 6 shows the possibility of bringing in the fold in a web of film laid around the package. The fold is made at one end 1' of the packaging film.

The other end 1" of the packaging film is drawn over the fold and joined to the two side parts of the fold. In this case also the fold opens e.g. by cutting or separating the part of the film located between the two side parts of the fold and serving as a connection 3'. If the securing 6 is carried out as a spot-welded seam and the film 1" is allowed to overlap e.g. by a finger's breadth, the fold can be easily opened without any aid by ripping the spot-welded seam.

Claims

1. Packaging, especially sack-shaped packaging, made from foil-like material, with at least one fold starting from an opening end of the packaging, and in the case of multi-layered packaging involving all layers, wherein the fold runs at right angles to the filling and emptying opening and free edges of both parts of the fold formed in the packaging are held closed by means of a connection made on both parts of the fold, which is not open during the filling process, but which can be broken for emptying.

2. Packaging according to Claim 1, wherein the connection consists of a strip.

3. Packaging according to Claim 1 or 2, wherein the connection is glued or welded.

4. packaging according to Claim 3, wherein the connection can be broken. 5. Packaging according to Claim 3, wherein the connection is welded or glued at points. 6. Packaging according to any one of Claims 1 to 3, wherein the connection is perforated. 7. Packaging according to any one of Claims 1 to 3, wherein the connection possesses a tearing band or a tearing thread. 8. Packaging according to any one of Claims 1 to 7 filled with goods which do not flow freely. 9. Packaging substantially as described herein with reference to and as shown in Figure 1 of the accompanying drawings. IQ. Packaging substantially as described herein with reference to any of Figures 2 to 6 of the accompanying drawings. - 6 - 5 Dated this 19th Day of July 1984. BY: TOMKINS & CO., Applicants1 Agents, (Signed)

5. , Dartmouth Road, DUBLIN 6 - 7 -