Production of shaped rubber body

Details Production of shaped rubber body Production of shaped rubber body

2005-10-18

2005-10-18

Knable, Geoffrey L. (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S130000, C156S397000

Reexamination Certificate

active

06955734

ABSTRACT:
A shaped rubber body with improved uniformity in terms of weight and/or physical properties is produced by extruding a rubber strip by a positive displacement extruding system that includes, as seen from an upstream side of the rubber strip, a screw extruder unit, a gear pump unit and an extrusion head unit with an extrusion nozzle, which are connected in series with each other. The rubber strip is fed to a rotating support along a substantially straight passage extending from the screw extruder unit to the extrusion nozzle of the extrusion head unit, passed through a gap defined between a pair of pressure roll, and applied onto an outer surface of the support by one of the pressure rolls.

REFERENCES:
patent: 4963207 (1990-10-01), Laurent
patent: 5156781 (1992-10-01), Böhm et al.
patent: 6372070 (2002-04-01), Iizuka et al.
patent: 6723194 (2004-04-01), Takaoka
patent: 2001/0042586 (2001-11-01), Caretta et al.
patent: 2001/0050134 (2001-12-01), Iizuka
patent: 0 492 425 (1992-07-01), None
patent: 0 968 814 (2000-01-01), None
patent: 1 084 814 (2001-03-01), None
patent: WO 03/101712 (2003-12-01), None
XP-002209836, Walter Michaeli, ed., “Extrusion Dies”, 1984, pp. 323-332.

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