Patent ID: 6022502
Filing Date: 2000-02-08
Classification: B29C,B29K,B29L,F16D

Abstract:
A method of making a composite friction assembly having at least one friction member and a support member, each member having a planar surface, the planar surface of one member confronting the planar surface of the other member to provide a substantially planar interface between the friction member and the support member, the method comprising the steps of:a. providing a first composition for the friction member having a thermosettable resin and a filler material in pulverulent form;b. providing a second composition for the support member having a thermosettable resin and a filler material in pulverulent form;c. providing a mold having a first chamber for receiving the first composition and a second chamber for receiving the second composition, the first and second chambers being arranged so that the confronting surfaces of the friction member and the support member confront one another along a planar interface at the interconnection of the chambers;d. inserting the first and second compositions into the respective chambers of the mold; ande. applying heat and pressure to the compositions in the chambers to thermoset the pulverulent compositions of both of the members and unite the members into an integral unitary structure wherein the interface defines a boundary layer comprising a mixture of the compositions for the friction member and the support member, the improvement wherein the heat and pressure applied to the respective compositions are controlled to substantially confine the composition of each member to separate sides of the boundary layer, whereby the composition of the friction member does not substantially penetrate beyond the boundary layer into the support member and the composition of the support member does not substantially penetrate beyond the boundary layer into the friction member.