Process for producing two-ply friction material
AssigneeBorgWarner Inc.
InventorMarc A. Yesnik
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Abstract
The present invention relates to a two-ply fibrous base material comprising a primary layer having elastic and oil absorbent characteristics bonded to a secondary layer having high temperature resistance and high strength characteristics. The two-ply fibrous base material, when impregnated with a phenolic, modified phenolic silicone, modified silicone or silicone/phenolic resin blends, provides a friction material exhibiting good friction and wear characteristics and is especially useful in high energy end use applications.
Claims19
A two-ply fibrous base material for use in a non-asbestos friction material comprising a primary layer bonded on a first side to a secondary layer and bonded on an opposing side to a metal brake or clutch substrate, the primary layer comprising oil absorbent fibers and filler material, the secondary layer comprising high temperature resistant aramid fibers, fillers, silica particles, friction modifying particles, and optionally glass fibers;
- wherein the primary layer has a lower density than the secondary layer.
Dependencies are inferred from the claim text.