KNEADING METHOD FOR ETHYLENE, PROPYLENE AND DIEN RUBBER

摘要

PURPOSE:To manufacture a rubber product of beautiful surface without surface roughening or exposure of foreign matters. CONSTITUTION:A part of sulfur is fed in advance during the A batch kneading process through the cooling process 22 in the kneading method of ethylene, propylene and dien rubber consisting of the A batch process 21 in which a blend such as a reinforcing agent is added to a polymer of ethylene, propylene and dien rubber and kneaded therein, the cooling process 22 in which a kneaded material is processed into sheeting and cooled and the B batch process 23 in which a vulcanizing agent such as sulfur is added to the cooled A batch kneaded material and kneaded therein.