Two-layer molding |
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申请号 | JP9827297 | 申请日 | 1997-03-31 | 公开(公告)号 | JPH10278179A | 公开(公告)日 | 1998-10-20 |
申请人 | Aron Kasei Co Ltd; アロン化成株式会社; | 发明人 | MIYAOKA TERUO; FUJIMOTO TATSUO; KAHOKI MANABU; | ||||
摘要 | PROBLEM TO BE SOLVED: To enable an engineering plastic to be thermally fusion-bonded tightly with an elastomer by coating an elastomer layer composed of a mixture of a specific styrene block copolymer and polystyrene and a specific ethylene copolymer on an engineering plastic layer. SOLUTION: A styrene.ethylene.propylene.styrene block copolymer(SEPS) is selected as an elastomer layer to be coated on an engineering plastic layer, and polystyrene (PS) is added in order to further improve the thermal fusion- bonding properties of (SEPS). The content of PS to be added is 20-60 pts.wt. for 100 pts.wt. of SEPS. Addition of the PS to the SEPS causes the generation of irregularities on the surface of moldings. Therefore, an ethylene-vinyl acetate copolymer (EVA) and/or an ethylene-ethylacrylate copolymer (EEA) are added as a compatible modifying means. The content of the EVA and/or the EEA to be added is routinely 10-20 pts.wt. for 100 pts.wt. of the SEPS. | ||||||
权利要求 | 【請求項1】エンジニアリングプラスチック層と、該エンジニアリングプラスチック層を被覆するエラストマー層とからなり、該エラストマーはスチレン・エチレン・ プロピレン・スチレンブロック共重合体とポリスチレンと、エチレン−酢酸ビニル共重合体および/またはエチレン−エチルアクリレート共重合体との混合物であることを特徴とする二層成形物 |
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说明书全文 |
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