Method and apparatus for extruding a low density thermoplastic foam
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United States of America Patent
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Feb 28, 1995
Issued Date -
N/A
app pub date -
Jun 7, 1994
filing date -
Nov 17, 1987
priority date (Note) -
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Abstract
A process and apparatus are described for extruding a soft, low density elastomeric thermoplastic foam. A single screw extruder having a very large screw length to diameter ratio is provided to thoroughly mix the thermoplastic elastomer with a blowing agent. A thin, substantially taperless die is also provided to form extruded profiles. By using such a process and apparatus, a variety of complex-shaped extruded profiles may be easily produced.
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Cited Art Landscape
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