Laminate and method for manufacturing the same

A laminate with a hard coat and low refractive index layer on an acrylic resin film addresses moldability and functional property deficiencies, ensuring high tensile and crack elongation for improved automotive display applications.

JP7869192B2Active Publication Date: 2026-06-02KANEKA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KANEKA CORP
Filing Date
2022-02-01
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing acrylic resin films lack sufficient moldability and functional properties such as surface hardness, scratch resistance, anti-reflective properties, and anti-glare properties, making them unsuitable for advanced automotive display applications.

Method used

A laminate is created by forming a hard coat layer on an acrylic resin film using a urethane acrylate resin and a low refractive index layer with hollow silica fine particles, achieving high tensile elongation and crack elongation through controlled curing with active energy rays.

Benefits of technology

The laminate exhibits excellent moldability, surface hardness, anti-reflective properties, and anti-glare properties, preventing peeling and cracking on curved surfaces, thus enhancing the performance of automotive displays.

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Abstract

The present invention addresses the problem of providing a laminate including an acrylic resin film having excellent moldability. Provided is a method for producing a laminate having a specific cracking elongation, said method comprising: (A) a step for forming, on at least one surface of a specific acrylic resin film, a hard coat layer containing a urethane acrylate resin; and (B) a step for forming, on the hard coat layer obtained in step (A), a low refractive index layer containing an acrylate resin that contains not less than 40% of hollow silica fine particles having a particle diameter of less than 100 nm.
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