Adhesive Labels

The adhesive label laminate structure with a cohesive fracture layer formed from ethylene-vinyl acetate resin and a metal fatty acid salt addresses the challenges of high peeling force and stickiness in existing adhesive labels, enabling efficient and easy separation of the substrate while preventing adhesive residue.

JP7653289B2Active Publication Date: 2025-03-28LINTEC CORP
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Patent Information

Application Number
JP2021061950
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-03-31
Publication Date
2025-03-28
Estimated Expiration
2041-03-31

AI Technical Summary

Technical Problem

Existing adhesive labels used for delivery slips require a higher peeling force to separate the substrate from the laminate, and they often leave a sticky surface on the adhesive label side after peeling.

Method used

A laminate structure comprising a substrate, a cohesive fracture layer with a specific structure formed from ethylene-vinyl acetate resin and a metal fatty acid salt, and an adhesive layer, where the cohesive fracture layer breaks to facilitate easy separation of the substrate from the laminate without excessive force and prevent stickiness on the adhesive label side.

Benefits of technology

The solution allows for the separation of the substrate from the laminate with a peeling force that is sufficient but not excessive, and it prevents stickiness on the adhesive label side after separation, enhancing the usability and efficiency of adhesive labels.

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Abstract

To provide a new adhesive label that is used after the adhesive label that is a laminate containing a base material and an adhesive layer has been stuck to an adherend, and then the base material has been separated from the laminate, the adhesive label enabling separation of the base material from the laminate without requiring force higher than necessity, and capable of preventing stickiness on the surface on the side of the adhesive label after the base material has been separated.SOLUTION: There is provided a laminate in which a base material (Y), a cohesive failure layer (X) and an adhesive layer (Z) are laminated in this order, wherein the layer (X) is formed from a first resin layer (X1) formed from a resin composition containing an ethylene-vinyl acetate-based resin and a fatty acid metal salt and a second resin layer (X2) formed from a resin composition containing an ethylene-vinyl acetate-based resin, and has the layer (X1) and the layer (X2) in this order from the side of the base material (Y); the layer (X) is destructed by generation of cohesive failure in the layer (X1); and the base material (Y) and the layer (Z) are separated from each another.SELECTED DRAWING: Figure 1
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