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US 11,958,707 B2Granted
Sheet transport roller rubber composition and sheet transport roller
AssigneeSumitomo Rubber Industries, Ltd.
InventorsMasashi Hamakubo, Ryosuke Fujii, Satoshi Ito
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Abstract
A sheet transport roller having a high friction coefficient and a rubber composition for forming a roller main body thereof. The rubber composition of the present disclosure, which is a rubber composition for forming the roller main body of the sheet transport roller, contains a rubber component containing an ethylene-α-olefin copolymer and a rosin component.
Claims10
A sheet transport roller rubber composition containing
- a rubber component containing an ethylene-α-olefin copolymer and a rosin and/or a rosin derivative, wherein
- an acid value of the rosin and/or the rosin derivative is 50 mg KOH/g or less.
A method for producing a sheet transport roller rubber composition, comprising:
- a first step of obtaining a kneaded product obtained by kneading a rubber component containing an ethylene-α-olefin copolymer and a rosin and/or a rosin derivative at a temperature equal to or higher than a softening point of the rosin and/or the rosin derivative, wherein
- an acid value of the rosin and/or the rosin derivative is 50 mg KOH/g or less.
Dependencies are inferred from the claim text.