Patent · US Expired

Reflection-reduced, bondable stretched film as window film for envelopes

US5521004A · kind A · utility

1Cited by

3References

7Claims

0Family size

Assignee

Wolff Walsrode AG · DE

Inventors

Ulrich Reiners · Neuenkirchen, DE
Anton Krallmann · Bad Fallingbostel, DE
Neele Neelen · Einbeck, DE
Helmut Kuhlenkamp · Soltau, DE

Key dates

Filing date	Apr 8, 1994
Grant date	May 28, 1996
Priority date	—
Expiry date	Apr 8, 2014

Classification

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

Abstract

The present invention relates to a stretched, multilayer, transparent film which is reflection-reduced on at least one side, consists predominantly of polypropylene and is very suitable as window film for envelopes.

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