| 摘要 |
PROBLEM TO BE SOLVED: To provide a sandwich forming part for a transmission device capable of effectively preventing deterioration of durability while actually using. SOLUTION: The sandwich forming part for the transmission device is composed of a slide rail 11 travelling in slide contact with a chain and a rail support 12 and the first resin which comprises a surface layer is made of a material whose main component is nylon 66 and melt viscosity of the first resin at 300°C is 500-2,000 Pas at shear rate 1,000 s<SP>-1</SP>and the second resin which comprises a core layer has a higher strength than the first resin and the wall thickness of the surface layer of the sliding part 11a of the slide rail 11 is characteristically 1.0 mm or more. COPYRIGHT: (C)2006,JPO&NCIPI
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