Wind-up body, method for producing laminated film, and laminated film

The pre-lamination of a release layer on the substrate in laminated films ensures effective lamination of the functional layer, addressing material dilution and mixing issues, improving adhesion and design flexibility.

JP2025117312APending Publication Date: 2025-08-12GUNZE LTD
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Patent Information

Application Number
JP2024012083
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-30
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

Existing laminated films face issues with proper lamination of a functional layer onto a release layer due to material dilution and mixing when the release layer is not fully dry, leading to poor adhesion and potential mixing of raw materials at the interface.

Method used

A laminated film structure where the release layer is pre-laminated on the substrate, ensuring it is fully dry before applying the functional layer, preventing material dilution and mixing, and allowing for improved adhesion and design freedom in printing.

Benefits of technology

Enables effective lamination of the functional layer onto the release layer with reduced material mixing and dilution, enhancing adhesion and reducing manufacturing steps, while allowing for improved design flexibility and reduced odor in the printing process.

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Abstract

To provide a wind-up body of a laminated film, a method for producing a laminated film, and a laminated film, enabling a functional layer to be laminated relatively favorably on a release layer.SOLUTION: A wind-up body includes a cylindrical winding core and a laminated film, the laminated film being wound around the winding core in the circumferential direction, the laminated film comprising a substrate and a release layer laminated on the substrate, and the release layer not having the functional layer laminated thereon.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

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    JP7100750B1