Method of manufacturing a rubber sheet for a powertransmission belt and a power transmission belt i ncorporating the rubber sheet

摘要

A method of manufacturing a power transmission belt having a body with a length and a cushion rubber layer in which at least one carrying member is embedded so as to extend lengthwise of the body. The method includes the steps of: extrusion molding (a) a first rubber composition (16) including rubber with short fibers (18) therein and (b) a second rubber composition (20) that is different than the first rubber composition (16) to produce a first sheet in which the second rubber composition (20) defines at least a part of the cushion rubber layer; applying the at least one load carrying member to the second rubber composition to produce a preform assembly; and processing the preform assembly to produce a power transmission belt.