Invention Grant
- Patent Title: Multilayer polyurethane protective films
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Application No.: US14570454Application Date: 2014-12-15
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Publication No.: US10213992B2Publication Date: 2019-02-26
- Inventor: Charlie C. Ho , Kenneth J. Halford
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Harold C. Knecht, III
- Main IPC: B32B7/12
- IPC: B32B7/12 ; B32B27/08 ; B32B27/40 ; B32B37/15 ; B32B38/00 ; C09J7/02

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
- US20150099113A1 MULTILAYER POLYURETHANE PROTECTIVE FILMS Public/Granted day:2015-04-09
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