Patent ID: 6612415
Filing Date: 2003-09-02
Classification: B29C,B29L,F16D

Abstract:
A friction member comprising:a back plate, a non-asbestos friction material bonded to a surface of the back plate and produced by molding and curing a composition that includes a fibrous base, a binder and a filler, and a zinc phosphate conversion coating formed between the back plate and the non-asbestos friction material; wherein the conversion coating is composed of crystals having a maximum length of 0.1 to 50 &mgr;m and an aspect ratio of 1/1 to 1/10, has a coating weight of 0.5 to 20 g/m2, and has a phosphophyllite ratio P/(P+H), based on phosphophyllite crystals (P) and hopeite crystals (H) therein, of from 0.1 to 1.