COEXTRUDED, CROSSLINKED MULTILAYER POLYOLEFIN FOAM STRUCTURES AND METHODS OF MAKING THE SAME

摘要

A physically crosslinked, closed cell continuous multilayer foam structure comprising at least one polypropylene/polyethylene coextruded foam layer is obtained. The multilayer foam structure is obtained by coextruding a multilayer structure comprising at least one foam composition layer, irradiating the coextruded structure with ionizing radiation, and continuously foaming the irradiated structure.

主权项

1. A method of forming a multilayer structure comprising:
coextruding:
a foam layer comprising:
polypropylene or polyethylene; anda chemical foaming agent; anda film layer on a side of the foam layer, the film layer comprising polypropylene or polyethylene.