Multilayer polyurethane protective films

Details Multilayer polyurethane protective films Multilayer polyurethane protective films

B - Operations, Transporting

32

B

B32B 27/40 (2006.01)

Patent

CA 2606441

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.

Film de protection multicouche à première couche, seconde couche et couche PSA. La première couche comprend au moins un polyuréthanne à base de polyester, un autre à base de carbonate ou une combinaison ou un mélange des deux. La seconde couche. La seconde couche comprend au moins un polyuréthanne thermoplastique à base de polycaprolactone. La couche PSA comprend un adhésif sensible à la pression. Une surface majeure de la première couche est liée à une surface majeure de la seconde couche, et la couche PSA est liée à une surface majeure opposée de la seconde couche de sorte que celle-ci soit prise en sandwich entre la première couche et la couche PSA.

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