Patent ID: 6955734

Claim:
A method for producing a shaped rubber body by extruding a rubber strip by a positive displacement extruding system that includes, as seen from an upstream side of the rubber strip, (i) a screw extruder unit, (ii) a gear pump unit, (iii) an extrusion head unit with an extrusion nozzle, and (iv) a pair of guide rolls that are arranged between the extrusion nozzle of the extrusion head unit and a rotating support, said guide rolls defining a gap therebetween through which said rubber strip is passed, one of said guide rolls applying the rubber strip onto an outer peripheral surface of said support, wherein said screw extruder unit, said gear pump, said extrusion head unit and said guide rolls are connected in series with each other forming an integrally movable assembly, said method comprising the step of: feeding the rubber strip to said support substantially linearly, along a passage extending from said screw extruder unit to said extrusion nozzle of the extrusion head unit; and causing movement of said assembly integrally over a desired region of said outer peripheral surface of the support, thereby applying the rubber strip onto the outer peripheral surface of the support, wherein said movement of said assembly includes movement about a swivel axis, which extends perpendicular to a direction of the passage for the rubber strip and also to a direction of a rotational axis of the support, and which passes a point of contact between the outer peripheral surface of the support and said one of the guide rolls.