Apparatus for extruding a low density thermoplastic foam

Details Apparatus for extruding a low density thermoplastic foam Apparatus for extruding a low density thermoplastic foam

1996-12-20

1998-03-17

Smith, Duane S.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

264 459, 2641771, 26421121, 264349, 425208, 425817C, B29C 4760, B29C 4450

Patent

active

057284067

ABSTRACT:
An 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 an apparatus, a variety of complex-shaped extruded profiles may be easily produced.

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