Linerless label and method for pasting linerless label

The linerless label with a low-friction, high-strength adhesive layer is transferred and activated in a controlled manner to prevent wrinkles and ensure strong adhesion, addressing the transfer issues in label affixing devices.

WO2026141594A1PCT designated stage Publication Date: 2026-07-02FUJI SEAL INTERNATIONAL INC

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
FUJI SEAL INTERNATIONAL INC
Filing Date
2025-12-25
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Wrinkles form on linerless labels during transfer from a first transport unit to a second transport unit in label affixing devices due to the adhesive layer's interaction with the transport units.

Method used

A linerless label with an adhesive layer that has a static friction coefficient of 2.0 or less in its unactivated state and an adhesive strength of 2.0 N/25 mm or more, activated by light energy, is transported by a first unit in contact with the adhesive layer and a second unit in contact with the opposite side, with activation occurring during transfer.

Benefits of technology

Suppresses wrinkles during transfer and ensures effective adhesion to substrates by maintaining adhesive strength, facilitating easy handling and precise application.

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Abstract

A linerless label (3) includes: a base material layer (10); and an adhesive layer (30) that is provided on the rear surface of the base material layer and is made of a material activated by irradiation with optical energy. The static friction coefficient of the adhesive layer in a state where the adhesive layer is not activated is 2.0 or less, and the adhesive strength of the adhesive layer is 2.0 N / 25 mm or more.
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