Hood packaging installation with device for producing side folds

Abstract

Method and device for packaging articles, in particular palleted stacks of products, with a film hood, with the following sequence - pulling of a length of flat tube off from a tube supply, said tube comprising two film webs respectively folded on the outer sides and, as a result, lying flat and directly one on top of the other over the entire width and comprising a one-piece film, opening of the foremost end of the tube, as seen in the pulling-off direction, at least partial closing of the length of tube pulled off from the supply of film tube, substantially transversely in relation to the pulling-offdirection, at a location remote from the foremost end of the tube (closure location), cutting off of the tube from the remaining supply of tube at a location lying upstream of the closure location inthe pulling-off direction, pulling of the tube over the articles to be packed, preferably with prior gathering up of the hood, or of the portion of tube substantially forming it later, on a gathering device, the flat tube being folded in from its outer sides in a V-shaped manner, after it has been finally pulled off from its supply and before it has been closed, in such a way that, in the regionof the outer side of the tube and at the level of the closure location, the two film webs no longer respectively lie directly one on top of the other during the closing, but with the inclusion of a V-shaped film fold extending with the tip of the fold towards the middle of the tube.

Description

technical field [0001] The present invention relates to methods and apparatus for packaging stacked goods. Background technique [0002] Conventional packaging plants either work according to the film hood shrinking method or according to the so-called hood stretching method. In both cases, the film cover is pulled over (typically, down) the item to be packed. When using the cover shrink method, the film cover is then shrunk under the action of heat. It is thus pulled together, packing the stacked goods together. When using the hood stretching method, the hood is stretched elastically in the horizontal direction and / or in the vertical direction before or, if appropriate, during the covering process. Under the effect of prestressing, the hood clings to the stacked goods to be packed and packs the goods together. [0003] A device of this type which works according to the so-called hood retraction method is disclosed, for example, in DE 32 42 677 C2. The disclosed device ...

AI Technical Summary

Problems solved by technology

However, film tearing must be avoided as much as possible

Because, it can lead to equipment failure and downtime in some cases

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