PACKAGE FOR COMPOUNDED RUBBER, COMPOUNDED RUBBER AND TIRE HAVING TREAD THEREOF

摘要

PROBLEM TO BE SOLVED: To obtain the subject package of wrapping compounding ingredients for uncured rubber with a protective film of specific thermoplastic polymer so that, in the productive mixing stage, the film can melt rapidly and disperse readily in the rubber composition. SOLUTION: This package is obtained by wrapping compounding ingredients for uncured rubber with a protective film, a thermoplastic film 0.02-0.08mm thick, having a softening point of 70-75 deg.C composed of (A) 70-90 pts.wt. of a ultra-low-density polyethylene copolymer 70-77 deg.C in softening point and 0.88-0.89 in specific gravity composed of 70-85wt.% of unit derived from ethylene and 30-15wt.% of unit derived from hexene or from an aliphatic monoolefin selected from hexene and octene and (B) 30-10 pts.wt. of an ethylene-vinyl acetate copolymer 70-77 deg.C in softening point containing 24-32wt.% vinyl acetate.