HEAT SHRINKING APPARATUS FOR SHRINK FILM
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United States of America Patent
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app pub date -
Feb 9, 2012
filing date -
Dec 15, 2006
priority date (Note) -
Abandoned
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Abstract
A heat shrinking apparatus may include a heat treatment chamber that surrounds a transfer passage for the article; and heating means that heats the interior of the heat treatment chamber. The heating means may be adapted to supply superheated steam to the heat treatment chamber. The heat treatment chamber may include a preheating chamber and a main heating chamber. The superheated steam may be supplied to an interior of the main heating chamber. The preheating chamber may include preheating means. The article may be a cup-shape container having a tapered barrel portion. The preheating means may be configured to intensively heat a portion of a cylindrical shrink film fitted on the cup-shape container corresponding to a larger diameter portion of the cup-shape container to thereby locally heat shrink the cylindrical shrink film to temporarily fix the cylindrical shrink film on the cup-shape container.
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