Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROCESS FOR MAKING A MOLD PIECE HAVING A MAIN CURVED SURFACE BEARING A UTILITARY MICROSTRUCTURE
Document Type and Number:
WIPO Patent Application WO2004002706
Kind Code:
A3
Abstract:
A process for making a mould piece having a main curved surface bearing an utilitary microstructure which comprises transferring a utilitary microstructure from a master piece main surface to a main surface of a flat cured elastomeric film; pressing the cured elastomeric film and a master article against each other so as to conform the overall shape of said cured elastomeric film to the curved shape of the main surface of the master article and to spread over a curable coating composition between the curved main surface of the master article and the main surface bearing the replica of the said utilitary microstructure of the cured elastomeric film; curing the coating composition; removing the cured elastomeric film and depositing a layer of a metal or a metallic alloy on the exposed main surface of the hard coating of the master article; and recovering said metal or metallic alloy layer to obtain a mould piece having a curved main surface bearing a replica of said transferred utilitary microstructure.

Inventors:
KELLER GERHARD (FR)
NEW MARY JANE (GB)
ARDA KERIM YASAN (GB)
RAWLINS PHILIP JOHN (GB)
CARMICHAEL ALLAN (GB)
Application Number:
PCT/EP2003/006995
Publication Date:
February 19, 2004
Filing Date:
June 30, 2003
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ESSILOR INT (FR)
KELLER GERHARD (FR)
NEW MARY JANE (GB)
ARDA KERIM YASAN (GB)
RAWLINS PHILIP JOHN (GB)
CARMICHAEL ALLAN (GB)
International Classes:
B29C33/38; B29C59/02; G02B5/02; B29D11/00; G02B3/00; G02B3/08; B29L11/00; (IPC1-7): B29C33/38; B29D11/00
Domestic Patent References:
WO1999029494A11999-06-17
Foreign References:
EP0400672A21990-12-05
US4937030A1990-06-26
Download PDF: