Protective films and laminates

JP2026042373A5Pending Publication Date: 2026-06-08DAI NIPPON PRINTING CO LTD

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
DAI NIPPON PRINTING CO LTD
Filing Date
2024-08-27
Publication Date
2026-06-08

AI Technical Summary

Technical Problem

Conventional resin films lack sufficient solvent resistance, scratch resistance, and bending suitability, and the use of fluororesin coatings can impact the environment and human health.

Method used

A protective film with a surface protective layer made from a cured product of ionizing radiation curable or thermosetting resin, with a thickness of 3.0 μm to 15 μm and nanoindentation hardness of 100 MPa to 350 MPa, which does not contain organic fluorine compounds.

Benefits of technology

The film achieves excellent solvent resistance, scratch resistance, and good bending suitability while minimizing environmental and health impacts.

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Abstract

Provided is a protective film that has excellent solvent resistance and scratch resistance and also has good bending suitability. [Solution] A protective film having a resin substrate and a surface protective layer arranged on one side of the resin substrate, wherein the surface protective layer contains a cured product of at least one of an ionizing radiation curable resin and a thermosetting resin, the thickness of the surface protective layer is 3.0 μm or more and 15 μm or less, and the nanoindentation hardness of the surface protective layer is 100 MPa or more and 350 MPa or less.
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