Abstract: Polymeric films having at least one outer layer consisting of a blend of low density polyethylene and a poly-(alkylstyrene) can be heat sealed to non-woven webs such as paper to produce peel openable packages, for example for medical equipment. Such packages can be peeled open with low fiber lift from the non-woven webs.

Abstract: Heat sealable polymeric films having an outer, polymeric heat seal layer with a viscosity at its heat sealing temperatures such that it will flow into interstitial spaces between the fibers of a fibrous material and encapsulate the fibers at such temperatures, an intermediate polymeric layer in contact with the heat seal layer, the intermediate polymeric layer being capable of cohesively splitting when the heat sealed film is peeled, and at least one further polymeric layer, the heat seal layer being easier to fracture than the intermediate layer at the temperature at which peeling is to be effected so that heat seal layer ruptures rather than peeling continuing through the intermediate layer once peeling has been effected through the heat sealed zone.