| 摘要 |
PURPOSE: An extrusion resin composition is provided to improve processability by having excellent processing rate and to have excellent strength, elasticity and restitution coefficient. CONSTITUTION: An extrusion resin composition comprises: 10-40 weight% of a polypropylene resin which consists of a propylene-ethylene or propylene-1-butene copolymer or a propylene-ethylene-1-buthene terpolymer; 40-70 weight% of a propylene-ethylene rubber copolymer which has a melt index of 0.5-40 g/10minutes(230 deg. C) and a density of 0.800-0.890g/cm^3; 5-20 weight% of a styrene-ethylene-butene-styrene copolymer of which melt index is 5-30 g/10minutes(230 deg. C) and a density of 0.800-0.890g/cm^3; 0.1-2 weight% of a silane compound, 0.01-1 weight% of a tin compound which is a crosslinking catalyst; and 0.01-1 weight% of a molecular weight controller.
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