Thermoplastic polyester series resin foamed material and production process thereof
AssigneeSekisui Kaseihin Kogyo Kabushiki Kaisha
InventorsMotoshige Hayashi, Norio Amano, Takaaki Hirai, Takeshi Taki, Masatoshi Ishibashi
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Abstract
A thermoplastic polyester series foamed material having a thickness of at least 3 mm and an apparent density of from 0.05 to 0.7 g/cm.sup.3 is diclosed, wherein the crystallinity of the resin in the surface portion within 0.5 mm from the surface of the foamed material is not more than 30% and at least 1% lower than the crystallinity of the resin in the central portion of the foamed material.
Claims4
A thermoplastic polyester resin structural material obtained by bringing the surface of a thermoplastic polyester resin foamed material having a thickness of at least 3 mm and an apparent density of from 0.05 to 0.7 g/cm.sup.3, wherein the crystallinity of the resin in the surface portion within 0.5 mm from the surface of the foamed material is not more than 30% and at least 1% lower than the crystallinity of the resin in the central portion of the foamed material into contact with an uncured thermosetting resin containing fibers and curing the thermosetting resin to form a laminate.
A thermoplastic polyester resin structural material obtained by bringing the surface of a thermoplastic polyester resin foamed material having a thickness of at least 3 mm and an apparent density of from 0.05 to 0.7 g/cm.sup.3, wherein the crystallinity of the resin in the surface portion within 0.5 mm from the surface of the foamed material is not more than 30% and at least 1% lower than the crystallinity of the resin in the central portion of the foamed material into contact with a thermosetting resin containing fibers and a foaming agent and foaming and curing the thermosetting resin to form a laminate.
Dependencies are inferred from the claim text.