Patent · US Active

Recyclable PE packaging film with improved stiffness

US11235562B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

CONSTANTIA PIRK GMBH & CO. KG · DE

Inventors

Achim Grefenstein · Altrip, DE
Pragnesh Shah · Ahmedabad, IN
Saket Jha · Bengaluru, IN

Key dates

Filing date	Oct 11, 2019
Grant date	Feb 1, 2022
Priority date	—
Expiry date	Oct 11, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/80
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present teaching concerns a recyclable co-extruded PE packaging film with a first laminate layer of at least 60 vol % HDPE and a second laminate layer of a hetero-phase polypropylene block copolymer with a polyethylene content of 5-30 wt. % and a melting point higher than 155° C., preferably higher than 160°, the thickness of the second laminate layer being less than 5 μm.

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