Patent · US Expired

Multilayer lacquering of polar film substrates by a single application of material

US5487950A · kind A · utility

4Cited by

9References

12Claims

0Family size

Assignee

Wolff Walsrode AG · DE

Inventors

Gunter Weber · Linden, DE
Ulrich Reiners · Neuenkirchen, DE
Sebastian Meyer-Stork · Bad Fallingbostel, DE

Key dates

Filing date	Feb 3, 1994
Grant date	Jan 30, 1996
Priority date	—
Expiry date	Feb 3, 2014

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31808
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to the lacquering of polar film substrates with a coating system consisting of several components, the single application of material resulting in a multilayer structure of the lacquer coat. The coating system is preferably aqueous and free from organohalogen and results in an improved barrier action of the films against water vapor.

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