Patent · US Expired

Method of producing a film or a layer with a surface structure on both sides

US6495214B1 · kind B1 · utility

26Cited by

11References

13Claims

0Family size

Assignee

Emtec Magnetics GmbH · DE

Inventors

Volker Prix · Siegsdorf, DE
Reinhold Nentwich · Dießen, DE

Key dates

Filing date	Nov 15, 1999
Grant date	Dec 17, 2002
Priority date	—
Expiry date	Nov 15, 2019

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C43/24
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method of and apparatus for producing a transparent film or a transparent layer with a surface structure at least on one side and, on the other side, in register with said surface structure, a structural or 2-dimensional pattern, operate with at least two rotating rollers and layer application between them and curing of a structural layer. By means of a third rotating application roller, a further layer can be applied in register to the rear side of the structural layer and can be cured. The rollers and roller nips can be set very accurately by suitable devices. The rotation of all the rollers is controlled by a master drive.

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