| 摘要 |
PROBLEM TO BE SOLVED: To solve problems where forming a frame of a sewing machine of a synthetic resin as a sole substance is difficult because the synthetic resin is inferior to a die-casting alloy in rigidity and dimensional accuracy within a wide range of temperature, and no considerations were given to recycling efficiency in choosing the material. SOLUTION: Acrylonitrile/butadiene/styrene copolymer, which is an amorphous, thermal plastic resin, is used as a principal component. About 5-about 20 pts.wt. talc of 10μin the particle diameter which is a fine-particle inorganic additive is contained per 100 pts.wt. resin composition for molding the frame of the sewing machine.
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