laminated film

Abstract

The problem to be solved by the present invention is to provide a laminated film that satisfies moldability, self-repairability, designability, glossiness, and fingerprint resistance. The laminated film of the present invention is characterized in that it has a surface layer on at least one side of the supporting substrate, and the surface layer satisfies the following conditions 1 to 3: 1. The 60° specular gloss specified in JIS Z8741 (1997) is 60% or more; 2. The receding contact angle θr of oleic acid is 50° or more; 3. When a 0.5mN load is applied for 10 seconds in the measurement of a micro hardness tester, the maximum displacement in the thickness direction of the above layer is 1.0 μm or more and 3.0 μm Hereinafter, the creep displacement in the thickness direction of the layer is 0.05 μm to 0.5 μm, and the permanent displacement in the thickness direction of the layer is 0.2 μm to 0.7 μm when the load is released to 0 mN.

Description

Technical field [0001] The present invention relates to a laminated film that not only has the molding followability and scratch resistance required by molding materials, but also has excellent design properties and fingerprint resistance. Background technique [0002] In molding materials used for decorative molding, etc., in order to prevent damage during molding and prevent damage during use of the article after molding, a surface hardening layer is provided. However, due to insufficient elongation of the surface hardened layer following molding, cracks may occur during molding, or in extreme cases, the film may break, or the surface hardened layer may peel off. Therefore, the following methods are usually used: After molding, a surface hardened layer is formed, or after molding in a semi-cured state, it is completely cured by heating or irradiation with active rays. However, since the molded article is processed three-dimensionally, it is very difficult to provide a surface ...

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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