Method of producing endless drive belts

Details Method of producing endless drive belts Method of producing endless drive belts

B - Operations, Transporting

29

D

18/1005

B29D 29/10 (2006.01)

Patent

CA 1149123

ABSTRACT A method of producing endless drive belts of natural or synthetic rubber with thread-like embedded strength carriers of synthetic polymers which extend in, or essen- tially in, the longitudinal direction. This method applies especially to belts having longitudinal ribs upon the inner periphery or circumference thereof. A raw belt is built up in reversed layer sequence, is formed-out and vulcanized in an outer or external form or mold, and is subsequently turned or rolled over into the utilization condition of the belt. The raw belt is built up with an outer diameter corresponding to the smallest inner diameter of the outer form or mold, is widened or expanded in the form or mold, subject to plastic stretching of the strength carriers, and then vulcanized, and is subsequently cooled off in the stretched condition of the strength carriers.

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