Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1974-05-21
1976-06-08
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 457, 264 54, 264113, 264126, 264310, 428220, 428315, 428339, B29C 504, B29D 2700
Patent
active
039623904
ABSTRACT:
A method of producing shaped articles of thermoplastic resin having a non-foam layer and foam layer, which comprises introducing into a mold thermoplastic resin particles not containing a heat-decomposable blowing agent and thermoplastic resin particles containing such a blowing agent and having a greater heat capacity than said resin particles not containing a blowing agent, heating the mold and, in the meantime, moving said particles in said mold to effect the heat-melting of said particles as well as the heat-decomposition of said blowing agent.
REFERENCES:
patent: 3455483 (1969-07-01), Inklaar
patent: 3457205 (1969-07-01), Nonweiler
patent: 3814778 (1974-06-01), Hosoda et al.
Modern Plastics Encyclopedia 1968, "Plastics Properties chart": New York, McGraw-Hill, c. 1967, vol. 45, No. 1A, Sept. 1967, pp. 30-31, 38, 42-44 and 46.
CRC Handbook of Chemistry and Physics, 1974-1975 55th Edition, Robert C. Weast, Editor, Cleveland, Ohio, CRC Press, c. 1974, pp. F-96 and F-109.
Adachi Eiichi
Mori Hisayuki
Noguchi Yoji
Anderson Philip
Sekisui Kagaku Kogyo Kabushiki Kaisha
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