Resin-containing, biaxially oriented polypropylene film, process for the production thereof, and the use thereof
AssigneeHoechst Aktiengesellschaft
InventorsHerbert Peiffer, Ursula Murschall, Thomas Dries
Life of this patent
Estimating the term…
Abstract
The invention relates to a polypropylene film comprising a layer which comprises polypropylene and resin. The resin has a mean molecular weight M.sub.w of .gtoreq.1500. The invention also relates to a process for the production of the film, and to the use of the film.
Claims11
A film having a permanent set in the longitudinal and transverse directions of greater than 50%, said film consisting essentially of a single layer comprising a propylene polymer component and a resin component, the resin of said resin component having a mean molecular weight M.sub.w within the range of 1800 to 8000 and a proportion of resin of molecular weight M.sub.w of <1000 which is at most 35% by weight, based on the weight of the resin component.
Dependencies are inferred from the claim text.