Patent · US Expired

Resin-containing, biaxially oriented, multilayer polypropylene film, process for the production thereof, and the use thereof

US5560948A · kind A · utility

8Cited by

8References

20Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Herbert Peiffer · Mainz, DE
Ursula Murschall · Nierstein, DE
Thomas Dries · Bad Kreuznach, DE
Gunter Schloegl · Kelkheim, DE

Key dates

Filing date	May 25, 1994
Grant date	Oct 1, 1996
Priority date	—
Expiry date	May 25, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31931
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A multilayer polypropylene film which includes at least one base layer containing propylene polymer or a propylene polymer mixture and resin, and at least one outer layer containing .alpha.-olefinic polymers having 2 to 10 carbon atoms is disclosed. The resin has a mean molecular weight of .gtoreq.1500. The invention also relates to a process for the production of the multilayer film, and to the use of the film in a twist wrapping process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.