Process to regulate the thickness of oriented blown film

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United States of America Patent

PATENT NO 9302423
APP PUB NO 20110006452A1
SERIAL NO

12831863

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Abstract

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The invention relates to a process to regulate the film thickness of tubular film manufactured using a film blowing process, wherein the film is laid flat and repositioned using an oscillating take-off unit and subsequently monoaxially oriented in machine direction using an orientation unit. This process produces a film whose thickness profile has as few deviations as possible from the average film thickness across the film width. This result is achieved by setting the film thickness profile of tubular film produced with a film blowing line such that after orientation and as a result of deviations during orientation, a film thickness profile develops that is uniform across the entire film width.

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Patent Owner(s)

Patent OwnerAddress
HOSOKAWA ALPINE AKTIENGESELLSCHAFT86199 AUGSBURG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bayer, Bernd Bobingen, DE 4 17
Klimek, Lothar Bobingen, DE 2 14
Niemeier, Holger Augsburg, DE 1 12

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