Laminated film

Abstract

The present invention addresses the problem of providing a laminated film that satisfies requirements for moldability, self-healing properties, decorative properties, luster, and fingerprint resistance. This laminated film, which has a surface layer on at least one surface of a support substrate, is characterized in that the surface layer satisfies the characteristics 1 through 3 below: 1. 60° specular glossiness prescribed by JIS Z 8741 (1997) is 60% or more 2. Receding contact angle (θr) for oleic acid is 50° or more 3. In a microhardness meter measurement, the maximum displacement in the thickness direction of the layer when a 0.5 mN load is applied for 10 seconds is 1.0 µm to 3.0 µm, the creep displacement in the thickness direction of the layer is 0.05 µm to 0.5 µm, and when the load is released to 0 mN, the permanent displacement in the thickness direction of the layer is 0.2 µm to 0.7 µm.

Description

technical field [0001] The present invention relates to a laminated film having excellent designability and anti-fingerprint property as well as molding followability and scratch resistance required for molding materials. Background technique [0002] Molding materials used for decorative molding etc. are provided with a surface hardening layer in order to prevent damage during molding and to prevent damage during use of the article after molding. However, since the elongation of the surface hardened layer is insufficient following molding, cracks may occur during molding, or in extreme cases, the film may be broken, or the surface hardened layer may be peeled off. After molding, a hardened surface layer is formed, or after molding in a semi-cured state, it is completely cured by heating or irradiating active rays. However, since the molded article is three-dimensionally processed, it is very difficult to provide a surface hardened layer in the post-processing, and in the c...

AI Technical Summary

Problems solved by technology

[0004] On the other hand, in molding materials, especially in applications that require strong gloss, higher reflectivity, and transparency, so-called fingerprints (fingerprints here refer to The pattern caused by the raised lines (ridges) at the opening of the sweat glands of the fingertip skin, and the traces of the above-mentioned pattern attached to the surface of the object) are easy to recognize, and if it is not easy to wipe off, it will give people a look. dirty bad impression problem

In particular, electronic devices such as smartphones / touch panels, keyboards, remote controls for TVs / air conditioners, etc. have recently increased with fingers. For example, there are fingerprints attached to the casings of these devices, and the fingerprints are eye-catching and clean. damage problem

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