PROCESS OF MANUFACTURE OF A CIRCULAR FRICTION FACING

摘要

A method of manufacture of a circular friction facing, suitable for use in a clutch or brake, the friction facing being re-inforced by a fibrous filler which comprises discrete lengths of fibre strand. The friction facing is produced from a dough of compounded uncured friction material that is extruded so as to orientate the fibrous filler along the longitudinal axis of the extrudate. The extrudate is then spirally wound into a circular disc-like preform such that the axes of the bits of fibrous filler are tangential to a radius of the preform and then moulding and curing the preform to produce a friction facing.