Heat-sealable polypropylene packaging film for drum packages

摘要

A heat-sealable, biaxially stretch-oriented multilayer polypropylene film which is produced by coextrusion and symmetrical in construction, consisting of a base layer and cover layers, is described and is characterised in that the cover layers contain an added low-molecular-weight hydrocarbon resin and are corona treated. The drum film according to the invention is characterised in that it can be heat-sealed to itself but not to the biaxially oriented polypropylene films of the individual packages.