Patent · US Expired

Transfer-metallizing method

US4904325A · kind A · utility

7Cited by

5References

6Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Guenther Crass · Taunusstein, DE
Klaus Paschke · Bad Homburg vor der Höhe, DE
Lothar Bothe · Mainz, DE

Key dates

Filing date	May 27, 1988
Grant date	Feb 27, 1990
Priority date	—
Expiry date	May 27, 2008

Classification

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

Abstract

A transfer-metallization method in which a metal coating is applied to a top layer of a metallizing film, and the film is then brought into contact with a substrate such that the metal coating is transferred from the top layer to the substrate. The film is a three-layer biaxially-oriented transfer film produced by coextrusion and having a base layer of a polypropylene homopolymer and top layers applied to the two surfaces thereof. The base layer contains an additive depot of migrating monomers in an amount of 0.01 to 2.0 percent by weight, relative to the weight of the polymer constituting the base layer. The top layers are comprised of polypropylene that has a lower viscosity than the polypropylene of the base layer.

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