System for applying a heat shrinkable sleeve to a container
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United States of America Patent
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Feb 21, 1995
Grant Date -
N/A
app pub date -
Nov 19, 1991
filing date -
Nov 19, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A system for applying a heat-shrinkable sleeve or label to a container such as a vial for pharmaceuticals includes a novel heat tunnel assembly. The heat tunnel assembly, in a preferred embodiment, includes a conveyor for moving the sleeved containers past a heat source. The conveyor has a plurality of rollers upon which the sleeved containers are supported and rotated. The rollers turn at a first rate during initial shrinkage of the sleeve, and at a second, slower, rate after the initial shrinkage has occurred to reduce distortion and unwanted displacement of the label during its application. The heat tunnel assembly also includes a system for withdrawing the heat source from the vicinity of the conveyor should unexpected circumstances arise.
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