Heat-seal barrier material

By applying a barrier coating composed of mineral pigments and functional polymers on natural fiber paper containing cellulose, the deficiencies in barrier performance and high-speed coating process of existing paper-based materials are solved, and efficient and environmentally friendly heat sealing is achieved. Barrier material preparation.

CN119365653APending Publication Date: 2025-01-24UPM KYMMENE OYJ
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Patent Information

Application Number
CN202280096930.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2022-06-10
Publication Date
2025-01-24

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Abstract

The present invention relates to a method of manufacturing a heat-sealing barrier material (2), the method comprising: providing a paper (10, 11) having a first side and a second side, applying a barrier coating dispersion on the first side of the paper using a blade coater or a rod coater, the barrier coating dispersion being an aqueous dispersion having a solids content in the range of 40 to 60 wt.%, and the barrier coating dispersion being a non-aqueous dispersion having a solids content in the range of 40 to 60 wt.%. The present invention relates to a method for producing a barrier coating, comprising the steps of drying a barrier coating dispersion and comprising from 20% to 60% by weight of a mineral pigment, and from 20% to 80% by weight of a functional polymer selected from the group consisting of polyolefin dispersions, acrylate dispersions, styrene-acrylate dispersions, vinyl acetate-acrylate dispersions, and styrene-butadiene latex dispersions, and drying the barrier coating dispersion, to form a barrier coating (20). The invention relates to the use of a heat-seal barrier material. The invention also relates to a package.
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Citation Information

Patent Citations

  • Coated renewable paper or paperboard and its production method

    CN102292500A

  • Method for manufacturing a packaging material and a packaging material made by the method

    CN110100059A

  • Preparation method of paper bag and environment-friendly paper bag

    CN114381971A

  • Heat seal paper

    JP2022011700A

  • Heat-sealable wrapping paper

    WO2020216961A1

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