Thermoformable heat-sealable PET sheet material
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United States of America Patent
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Dec 31, 2013
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N/A
app pub date -
Dec 6, 2010
filing date -
Nov 12, 2007
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Abstract
A sheet for thermoforming is comprised of a material which is compatible with PET and which has slower crystallinity and a crystallization temperature which is at least 77° C. greater than its glass transition temperature, more preferably a crystallization temperature greater than 151° C. The material may be coextruded into a sheet with a first PET material, such that when thermoformed into a formed part the layers of second material are engaged with each other in the molded parts and for being subjected to heat sealing.
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