a resin other than polyethylene which is capable of acting as a trigger in the oxidation of polyethylene, and a transition metal catalyst, wherein the polyethylene comprises two or more kinds of polyethylenes and at least one of them is a linear low-density polyethylene obtained by copolymerizing ethylene with at least 4 wt % of a 1-alkene having 3 to 6 carbon atoms.11-20-2008