RUBBER COMPOSITION FOR SHEET FEEDING ROLL AND SHEET FEEDING ROLL

摘要

PROBLEM TO BE SOLVED: To attain long period stabilization of a sheet feeding and conveying property of a sheet feeding roll by providing the sheet feeding roll excellent in a holding property of a friction coefficient.;SOLUTION: A rubber composition for a sheet feeding roll has at least a polymer component and is characterized in that the maximum value tanδmax of a loss tangent is not more than 1.1 in temperature distribution measurement of a dynamic viscoelasticity, a temperature Tmax when the loss tangent tanδ becomes maximum is not more that -40°C, and a dynamic elasticity E1 (22°C) is not more than 2.1 MPa. It is preferable that a main component of the polymer component is an ethylenepropylene-diene copolymer. It is preferable that the rubber composition contains 70 pts.mass or more and 150 pts.mass or less of a softer based on 100 pts.mass of the polymer component.;COPYRIGHT: (C)2013,JPO&INPIT