Title:
CROSS-LINKED PRIMER COMPOSITION AND USE THEREOF IN THERMOFORMABLE FILMS
Document Type and Number:
WIPO Patent Application WO2003037648
Kind Code:
A3
Abstract:
A primer layer and a thermoformable film that includes the primer layer are provided. The primer layer includes a cross-linked adhesive polymer having a semicrystalline region and a polar region. The cross-linked adhesive polymer has a tensile strength at maximum elongation that is less than that of an otherwise identical adhesive polymer that has not been cross-linked. The primer layer can be an outer layer of the thermoformable film, can be positioned between two additional layers of the thermoformable film, or a combination thereof. The primer layer can be positioned in contact with a mold surface during a thermoforming process.
Inventors:
JOHNSON MICHAEL A (US)
Application Number:
PCT/US2002/034991
Publication Date:
April 29, 2004
Filing Date:
October 31, 2002
Export Citation:
Assignee:
3M INNOVATIVE PROPERTIES CO (US)
JOHNSON MICHAEL A (US)
JOHNSON MICHAEL A (US)
International Classes:
B32B27/00; B29C51/00; B29C51/14; B32B15/08; B32B27/08; B32B27/28; B44C1/00; B44F1/10; C09J7/28; B29C51/08; B29C51/10; B29L9/00; (IPC1-7): B32B27/08; B32B15/08
Foreign References:
| EP0978374A2 | 2000-02-09 | |||
| GB1512084A | 1978-05-24 | |||
| US5196246A | 1993-03-23 | |||
| EP1123791A1 | 2001-08-16 | |||
| EP0587353A1 | 1994-03-16 |
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