Bando Chemical Industries, Inc.

Wacom Co., Ltd.

Soh Kato

Toshihiko Horie

Yutaka Kamada

Arata Tani

The present invention addresses the problem of providing a surface protection film which provides an excellent writing sensation when a touch pen is used thereon and excellent scratch resistance against a touch pen. As a solution, provided is a surface protection film which has on the outermost surface thereof a protection layer formed of a polyurethane, wherein the polyurethane has an international rubber hardness degree (IRHD) of 87.0-98.0 and a tan δ peak value of 0.6 or more.

Surface protection film

The present invention addresses the problem of providing a surface protective film which is resistant to discoloration, expansion and the like caused by the penetration of a plasticizer. A surface protective film having, on the outermost surface thereof, a protective layer made of polycarbonate type polyurethane is provided as the solution of the problem.

Surface protective film

The present invention addresses the problem of providing a surface protective film laminate, surface protective film and its producing method. The surface protective film which has excellent smoothness, light transmission properties, transparency, scratch resistance, weather resistance and self-healing properties. The present invention provides, as a solution, a surface protective film wherein three layers, namely, a protective layer, a transparent base film and a pressure-sensitive adhesive layer are laminated in this order, said protective layer being formed of a thermosetting polyurethane which is a cured product of a polyether polyol, an aliphatic isocyanate, an alcohol-based curing agent and a non-amine catalyst.

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Saitama, Japan

Soh Kato