RUBBER COMPOSITION FOR PAPER FEEDING MEMBER, PAPER FEEDING MEMBER AND PAPER FEEDING DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain stable frictional force for a long period by adding thiuram type vulcanization accelerator as vulcanization accelerator to rubber composition which is mainly made of specified ethylene propylene diene rubber. SOLUTION: In the case of a paper feeding roller 1, a rubber layer 3 of rubber composition can be mounted on a paper feeding device and can be also used as a friction separation member after the rubber layer 3 of rubber composition is formed on a shaft 2 and the paper feeding roller 1 is formed. In this case, thiuram type vulcanization accelerator is blended with rubber composition which is mainly made of mixed rubber of oil extended ethylene propylene diene rubber containing 20 to 120 pts.wt. of extension oil or low molecular weight polymer per 100 pts.wt. of ethelene propylene diene rubber or non-oil extended ethylene propylene diene rubber which does not contain oil extended ethylene propylene diene rubber and extension oil, in this rubber composition. Rubber composition in which thiuram type vulcanization accelerator is blended with the rubber composition which is mainly made of non-oil extended ethylene propylene diene rubber which does not contain extension oil is used.