Uniform small cell foams and a continuous process for making same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jul 15, 2003
Grant Date -
Sep 26, 2002
app pub date -
Nov 27, 2001
filing date -
Apr 28, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A continuous method for making foams having uniform and/or small cell sizes and articles made with these foams are described. The method allows for adjusting or controlling cell size and cell size distribution by controlling temperature and/or blowing agent concentration. The foams feature small and/or uniform cell sizes and may be comprised of amorphous thermoplastic polymers, pressure sensitive adhesive compositions, and immiscible thermoplastic polymer compositions. A method for coextruding the foams is also described.
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