Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding
Patent
1981-03-30
1983-08-16
Anderson, Philip E.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By gas forming or expanding
249115, 264338, 264DIG5, B29D 2704, B29C 104, B28B 736
Patent
active
043990886
ABSTRACT:
A mold release agent designed for use with ceramic/polyester molding compositions is disclosed. The mold release agent comprises 15-30 weight percent polyethylene having a molecular weight of 15,000 to 30,000 and 70-85 weight percent of a mineral oil of 345-355 Saybolt Seconds Universal (SSU) at 100.degree. F. In a preferred molding procedure the surface of the mold is uniformly coated to a thickness of 0.5-2 mm with the mineral oil/polyethylene composition by melt-flow at 200.degree.-300.degree. F.
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Anderson Philip E.
Morley John P.
PCI Group Inc.
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