Patent · US Expired

Method and device for producing a foil material

US6376017B1 · kind B1 · utility

3Cited by

6References

12Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Wittich Kaule · Grafing, DE
Gregor Grauvogl · Hersbruck, DE

Key dates

Filing date	Aug 20, 1999
Grant date	Apr 23, 2002
Priority date	—
Expiry date	Aug 20, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C39/148
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for producing a foil material wherein a plastic foil is provided with a lacquer layer having variable viscosity, and a relief structure is then embossed into the lacquer layer. At least during application of the lacquer layer and during the embossing process the viscosity of the lacquer layer is adjusted to a predetermined value and kept constant during the particular phase of operation. The invention fixer relates to an apparatus for carrying out this method.

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