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US 5,866,025 AGranted
Mold for synthetic resin molding
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsHiroshi Kataoka, Masanori Mawatachi
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AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsHiroshi Kataoka, Masanori Mawatachi
Estimating the term…
A mold for molding a synthetic resin coated with a highly durable thick heat insulating layer, and a molding method using the same are provided. The present invention relates to a mold comprising a base mold comprising a metal, with its inner wall constituting the mold cavity being coated with a heat insulating layer, wherein the heat insulating layer comprises a polymer alloy comprising (A) a heat-resistant non-crystalline resin of a linear high-molecular weight polymer containing an aromatic ring in the main chain thereof and having a glass transition temperature of not lower than 150.degree. C. and an elongation at break of not less than 10% and (B) a cured thermosetting resin at a (A)/(B) mixing ratio of 40/60 to 5/95 by weight; and further relates to a molding method using the mold.
A mold for molding a synthetic resin which comprises a base mold comprising a metal, the inner wall constituting the mold cavity being coated with a heat insulating layer having a thickness of 0.05 to 2 mm, wherein the heat insulating layer comprises a polymer alloy comprising (A) a heat-resistant non-crystalline resin of a linear high-molecular weight polymer containing an aromatic ring in the main chain thereof and having a glass transition temperature of not lower than 150.degree. C. and an elongation at break of not less than 10% and (B) a cured thermosetting resin at a mixing ratio (the heat-resistant non-crystalline resin/the cured thermosetting resin) of from 40/60 to 5/95 by weight.
Dependencies are inferred from the claim text.