Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1997-03-03
1998-08-04
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 51, 264 53, B29C 4420
Patent
active
057888892
ABSTRACT:
In a process for extruding a low density foam, a foamable thermoplastic elastomer such as a thermoplastic rubber is selected. The selected thermoplastic elastomer is then fed into a heated extruder barrel where it is compressed and melted by the action of a screw. A blowing agent consisting of water is introduced into the melted thermoplastic elastomer. The melted thermoplastic elastomer and the water are thoroughly mixed and then cooled to a uniform, predetermined temperature. The mixture is then forced through a die to form an extruded foam profile.
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DeMello Alan J.
Halberstadt Louis
Hartford Douglas W.
Mertinooke Peter E.
Muessel Dan C.
Amesbury Group Inc.
Kuhns Allan R.
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