| 摘要 |
PURPOSE: To obtain a coextrusion molded product which is excellent in heat resistance, moldability, and resistance to deformation by a method wherein a thermoplastic resin composition is used as a rigid material, and a soft resin composition is used as a soft material. CONSTITUTION: An extrusion molded product is obtained by coextruding a thermoplastic resin composition A composed of chlorinated vinyl chloride resin of 60-70wt.% of constituent chlorine-contained amount, 100-50wt.% of the constituent and 0-50wt.% of the constituent vinyl chloride resin, and a soft resin composition B composed of 5-75wt.% of vinyl chloride resin, 5-70wt.% of partially crosslinked acrylonitrile-butadiene copolymer, and 10-65wt.% of plasticizer. The extrusion molded product which is excellent in heat resistance, moldability, and resistance to deformation, concretely a sealing material can be obtained thereby. |
