the invention pertains to an ethylene - propylene copolymer which when added to stretch film used in palletizing reduces the noise involved in use . the ethylene - propylene copolymer tackifier has a weight average molecular weight in the range of 7 , 000 to 18 , 000 and an ethylene content of 15 - 28 weight percent and results in polyethylene stretch films having both desirable cling and noise levels .