Patent · US Expired

Transparent, stretched polypropylene film

US5512649A · kind A · utility

6Cited by

4References

11Claims

0Family size

Assignee

Wolff Walsrode AG · DE

Inventors

Hermann Hendrickson-Benkhoff · Lengede, DE
Dietrich Stockmeier · Walsrode, DE
Ulrich Reiners · Neuenkirchen, DE

Key dates

Filing date	Feb 10, 1995
Grant date	Apr 30, 1996
Priority date	—
Expiry date	Feb 10, 2015

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31938
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

At least monoaxially stretched polypropylene film containing an antiblocking agent, wherein the antiblocking agent has a cuboid and/or cubic, preferably cubic, geometry with bevelled, i.e. chamfered, edges and is X-ray amorphous.

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