Polymeric foam powder processing techniques, foam powders products, and foam produced containing those foam powders
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United States of America Patent
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N/A
Issued Date -
Jul 5, 2007
app pub date -
Feb 28, 2007
filing date -
Dec 23, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This relates variously to techniques for comminuting polymeric foams, to techniques for preparing polymeric foams containing that comminuted foam, and to the resulting comminuted foam powder and polymeric foams. The procedures may be used on foams containing production contaminants such as polyolefins, paper, and foam skins and on other foams containing consumer contaminants such as wood, metal, leather, etc. The comminuted foam powder, with or without contaminants, preferably is screened or sifted to obtain a foam powder having a particle size of about 2 mm or less.
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