Invention Grant
- Patent Title: Multilayer polyurethane protective films
- Patent Title (中): 多层聚氨酯保护膜
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Application No.: US14243335Application Date: 2014-04-02
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Publication No.: US08927106B2Publication Date: 2015-01-06
- Inventor: Charlie C. Ho , Kenneth J. Halford
- Applicant: 3M Innovative Properties Company
- Applicant Address: US MN Saint Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN Saint Paul
- Main IPC: B32B7/12
- IPC: B32B7/12 ; B32B27/36 ; B32B27/00 ; B32B15/08 ; B32B27/40 ; B32B37/24

Abstract:
A multilayer protective film comprising a first layer, a second layer and a PSA layer. The first layer at least comprises a polyester-based polyurethane, a polycarbonate-based polyurethane or a combination or blend of both. The second layer at least comprises a polycaprolactone-based thermoplastic polyurethane. The PSA layer comprises a pressure sensitive adhesive. One major surface of the first layer is bonded to one major surface of the second layer, and the PSA layer is bonded to an opposite major surface of the second layer such that the second layer is sandwiched between the first layer and the PSA layer.
Public/Granted literature
- US20140212674A1 MULTILAYER POLYURETHANE PROTECTIVE FILMS Public/Granted day:2014-07-31
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