Title:
METHOD OF MAKING WRITABLE ERASABLE ARTICLES AND ARTICLES THEREFROM
Document Type and Number:
WIPO Patent Application WO2004021379
Kind Code:
A3
Abstract:
A method of making erasable article (100) comprises: providing an electret film (110) having first and second opposed major surfaces; applying a polymerizable precursor composition to at least a portion of the first major surface (120); polymerizing the polymerizable precursor composition to form a non-tacky crosslinked polymeric layer (130); and exposing the electret film (110) and non-tacky crosslinked polymeric layer (130) to a direct current corona discharge, wherein the second major surface (122) is free of adhesive material. Erasable articles and kits containing them are also disclosed.
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Inventors:
BHARTI VIVEK
JONES CLINTON L
GUSTAFSON FREDERICK J
JONES CLINTON L
GUSTAFSON FREDERICK J
Application Number:
PCT/US2003/020786
Publication Date:
May 13, 2004
Filing Date:
July 02, 2003
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
International Classes:
B32B27/10; B43L1/10; B41M5/52; B43L1/00; C08J7/16; C09D4/00; C09D4/02; C09D7/12; B41M5/00; B41M5/50; (IPC1-7): H01G7/02
Foreign References:
| FR2807859A1 | 2001-10-19 | |||
| US6265074B1 | 2001-07-24 |
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