USE OF A MULTI-LAYER ADHESIVE FILM

A multi-layer film with a low-friction separation layer and adhesive layer addresses unwinding difficulties and environmental concerns, ensuring easy use and sustainability.

DE102018218053B4Active Publication Date: 2026-05-28FLEXOPACK SA
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Patent Information

Application Number
DE102018218053
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Priority Date
2017-10-23
Filing Date
2018-10-22
Publication Date
2026-05-28
Estimated Expiration
2038-10-22

AI Technical Summary

Technical Problem

Existing adhesive films for kitchen use face challenges with high friction coefficients, making them difficult to unwind, and lack odor-inhibiting properties, while also being environmentally unfriendly due to materials like PVDC and PVC.

Method used

A multi-layer film with a separation layer and adhesive layer, where the separation layer has a kinetic coefficient of friction less than 0.4, preferably less than 0.3, and is composed of materials like ethylene-octene copolymer and calcium carbonate, with a thickness of less than 25 micrometers, ensuring easy unwinding and environmental friendliness.

Benefits of technology

The film achieves low friction for easy unwinding and maintains adhesive strength, while being environmentally friendly, addressing the issues of prior films.

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Abstract

Use of a film with a thickness of less than 25 micrometers, comprising a release layer and an inner adhesive layer, wherein the release layer of the film comprises 0.1 to 10 wt.% PDMS and wherein the kinetic coefficient of friction of the release layer surface of the film, measured according to ASTM D 1894 (film to film measurement), is less than 0.4, as a kitchen packaging film.
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Citation Information

Patent Citations

  • Single-sided stretch cling film

    EP2582519A1

  • Slip-cling stretch film

    US8197927B2

  • Slip-cling stretch film

    US20080311368A1

  • Multilayer polymeric film with non-migratory antiblock agent

    US6602609B1