Package making – Methods – Applying a partial cover
Patent
1990-02-07
1991-12-03
Sipos, John
Package making
Methods
Applying a partial cover
53 481, 53399, 53553, 53586, 1988039, B65B 1304, B65B 2124, B65B 2704
Patent
active
050690167
ABSTRACT:
The method comprises continuously wrapping ordered batches of containers (4) with either self adhesive or non-self adhesive films (A, B) of elastic plastics material (such as stretchable linear polyethylene). One of the films (A) forms the base of the wrapping and the other (B) the cover. The films (A, B) are welded together between one batch and the next (4) in a direction transverse to the direction in which the batches advance, and the batches are separated from each other by cutting the films. The apparatus comprises, for the spaced-apart batches of containers (4), a service conveyor (8) in contact with which the film (A) forming the base of the wrapping moves, and a plurality of mutually independent welding and cutting units (11) insertable individually into the gap between one batch and the next (4) to produce the weld and the cut, and extractable from said gap after welding and cutting. The apparatus also comprises transfer means (12, 13, 14) to transfer the welding and cutting units (11) from their point of extraction to their point of insertion. The service conveyor (8 ) conveys said units (11) from the insertion point to the extraction point.
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Johnson Linda B.
Sipos John
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