Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Patent
1994-01-05
1995-10-17
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
264 51, B29C 4450
Patent
active
054588324
ABSTRACT:
In manufacturing a foamed plastics of a saturated polyester resin, in which a saturated polyester resin is melted in an extruder, a foaming agent is injected under pressure into the molten saturated polyester resin at an intermediate portion of a barrel of the extruder, and the molten saturated polyester resin containing the foaming agent is extruded from a die to manufacture the foamed plastics of the saturated polyester resin, a polydimethylsiloxane having a boiling point, which is lower by at least 50.degree. C. than the melting point of the saturated polyester resin to be foamed, at the atmospheric pressure is used as a foaming agent.
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Ito Masayasu
Kabumoto Akira
Nakayama Kiyoshi
Ono Satoshi
Yoshida Naoki
Kuhns Allan R.
The Furukawa Electric Co. Ltd.
White John P.
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