Method and apparatus for joining rubbery fabric

摘要

A method of joining two sheets or plies of an uncured rubbery material by forming a butt-joint between adjacent edges E 1 , E 2 comprises bringing the edges together under simultaneous pressure perpendicularly across the joint in the plane of the plies and perpendicularly to the plane of the plies. An apparatus for joining sheets in such a manner may comprise a pair of oppositely rotatable rollers 41, 42 each having a conical roll face for contacting the top surface of respective sheets to apply pressure in the plane of the sheets and co-operating cylindrical rollers to apply pressure perpendicularly to the plane of the sheets. The conical faced rollers may have concentric grooves on their gripping faces and intermeshing gears.