Synthetic resin-coated spring and method for making same
AssigneesNippon Petrochemicals Company, Limited, Mitsubishi Steel Manufacture Co., Ltd.
InventorsKenji Ukai, Katsumi Yano, Nobumasa Umezawa, Satoru Yamaguchi, Takao Itoga
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Abstract
A synthetic resin-coated spring comprising a spring body and a synthetic resin coating layer formed on the spring body. The synthetic resin coating layer contains an olefin polymer modified with an unsaturated carboxylic acid or a derivative thereof. A method for making the coated spring is also described.
Claims15
A synthetic resin-coated metallic coil spring which comprises a spring body and a synthetic resin coating containing an olefin polymer modified with an unsaturated carboxylic acid compound which is a member selected from the group consisting of unsaturated carboxylic acids and derivatives thereof, said synthetic resin coating being formed on the surface of said spring body and said olefin polymer being a member selected from the group consisting of ethylene-alpha-olefin copolymers having a density of from 0.86 to 0.94 g/cm.sup.3, ethylene-vinyl acetate copolymers, ethylene-ethyl acrylate copolymers and mixtures thereof.
Dependencies are inferred from the claim text.