Method of forming products from thermoformable foam with infrared receptors
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United States of America Patent
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Sep 5, 2000
Issued Date -
N/A
app pub date -
Aug 9, 1999
filing date -
Nov 24, 1997
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Expired
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Abstract
A plastic sheet capable of being shaped by a cold room temperature tool, said sheet being a semi-rigid thermoformable plastic foam doped with carbon black having a concentration within a range of 0.0000081 to 0.0081% by weight of the foam. And a method of forming a product from such sheet by heating it to its thermoforming temperature range by infrared (IR) heat and placing and compressing the sheet between mold parts of a cold tool, the IR heat preferably being generated by quartz lamp electric heaters.
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