Package making – Apparatus for contraction of cover by stretching or shrinking
Patent
1997-12-30
1999-09-21
Johnson, Linda
Package making
Apparatus for contraction of cover by stretching or shrinking
425 66, B65B 5300
Patent
active
059538880
ABSTRACT:
The present invention relates to a pre-stretched film, and to apparatus and a method of applying outer packaging to packages and to loads, optimized as a function of the structure and in particular the shape of the package or the load, in particular a palletized load, and also as a function of the transport and handling that the package or the load must be capable of withstanding without the outer packaging being dislocated. According to the invention, a stretchable film is stretched over at least one roller having a diameter that varies along its axis of rotation so as to form parallel longitudinal zones in the film that have different degrees of stretching. These zones make it possible, in particular, to track the external outlines of objects to be packaged and/or to provide locally-reinforced bonding, or on the contrary to present surfaces that are more relaxed. The present invention applies in particular to packaging and grouping together loads that may optionally be palletized. The main application of the present invention lies in grouping together bottles of beverages.
REFERENCES:
patent: 3517098 (1970-06-01), Rasmussen
patent: 3799715 (1974-03-01), Miura
patent: 5090182 (1992-02-01), Bethge
patent: 5195296 (1993-03-01), Matsumoto
patent: 5195297 (1993-03-01), Lancaster et al.
patent: 5307609 (1994-05-01), Kurata et al.
patent: 5458841 (1995-10-01), Shirrell
Georges Jaconelli
Martin-Cocher Jean-Paul
Johnson Linda
Thimon, S.A.
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