Units for stacking packs particularly in wrapping systems that use a strip of shrink-wrap material
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United States of America Patent
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-
Apr 7, 1992
Grant Date -
N/A
app pub date -
Feb 7, 1991
filing date -
Feb 21, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stacking unit positioned between a machine that packs groups of products in single packs and a machine that wraps stacked packs using a strip of shrink-wrap material. A first horizontal conveyor is coplanar with the conveyors of the packing and wrapping machines and a pair of longitudinal closed-ring conveyors equipped with lifting devices in a constant vertical attitude are positioned either side of the first conveyor with the respective upper conveyor branch at different levels. The pair of longitudinal side conveyors equipped with the lifting devices have discs supported rotatably with their periphery at a higher level than that of the single packs being transferred onto the above-mentioned first conveyor.
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