Patent · US Expired

Multi-layer transparent polyolefin film for application in shrink labelling

US5212009A · kind A · utility

30Cited by

9References

22Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Herbert Peiffer · Mainz, DE
Gunter Schloegi · Kelkheim, DE
Lothar Bothe · Mainz, DE

Key dates

Filing date	May 21, 1990
Grant date	May 18, 1993
Priority date	—
Expiry date	May 21, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31913
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Described is a transparent shrinkable film comprising a base layer prepared from propylene-containing polymers and a hydrocarbon resin. The base layer contains about 5% to 40% by weight of a propylene homopolymer, 0% to about 30% by weight of a hydrogenated hydrocarbon resin having a softening point in the range from about 80.degree. to 125.degree. C., and about 30% to 95% by weight of a random ethylene-propylene copolymer, the percentages being related to the total weight of the mixture. A top layer is arranged on either side of the base layer. The invention also describes a process for the manufacture of the film.

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