Blendinging with the organic peroxide 2.5 - 4 weight sections and the building a bridge aid 0.1 - 5 weight

摘要

PROBLEM TO BE SOLVED: To provide a rubber composition comprising an EPM (an ethylene- propylene copolymer) as a principal component, especially free from an oil component as a softening agent, not making the surface of a print or the like dirty even in a conveying step of the photographic print or the like in an instant photo machine [Print Club (R)] to make tiny stickers, an automatic apparatus for forming a photograph for certification, etc., providing higher frictional force with the photographic print and maintaining characteristics for stably conveying the photographic print or the like for a long period, and to provide a rubber roller for conveying the photographic print or the like, using the composition.;SOLUTION: The oil-free rubber composition is obtained by compounding 100 pts.wt. EPM having 35-75 Mooney viscosity ML₁₊₄ (at 100°C), 3-20 pts.wt. filler, 2.5-4 pts.wt. organic peroxide as a cross-linking agent, and 0.1-5 pts.wt. cross linking assistant. The rubber roller for conveying the photographic print or the like comprises an elastic layer obtained by forming the rubber composition into a cylinder shape, and a shaft core.;COPYRIGHT: (C)2003,JPO