Process for preparing a gas permeable adhesive tape
AssigneeSankyo Chemical Co., Ltd.
InventorsNaoyuki Tani, Motomu Ueno, Kusutaro Yoshida, Yukio Mizukami
Life of this patent
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Abstract
A process for preparing permeable adhesive tapes, which comprises dispersing water or water and a water absorptive high-molecular weight compound homogeneously in a solution of a natural or synthethic rubber or acrylic pressure sensitive adhesive agent in an organic solvent, applying the dispersion onto a releasing agent applied sheet, drying the adhesive agent applied sheet, and laminating a porous backing material on the adhesive agent applied surface to obtain a permeable adhesive tape.
Claims18
A process for preparing permeable adhesive tapes comprising applying an homogeneous dispersion of water and a water absorptive high-molecular weight compound in a solution comprising an acrylic pressure sensitive adhesive agent in an organic solvent onto a sheet having a surface provided with a releasing agent, wherein said dispersion comprises water in an amount within the range of 5-40 parts by total weight of said solution, drying said sheet, and laminating a porous backing material on said surface of said sheet to obtain a permeable adhesive tape.
A process for preparing permeable adhesive tapes, comprising applying an homogeneous dispersion of water and a water absorptive high-molecular weight compound in a solution comprising a pressure sensitive adhesive agent selected from the group consisting of natural rubber and synthetic rubber in an organic solvent onto a sheet having a surface provided with a releasing agent, wherein said dispersion comprises water in an amount within the range of 10-40 parts by total weight of said solution, onto a sheet having having a surface provided with a releasing agent, drying said sheet, and laminating a porous backing material on said surface of said sheet to obtain a permeable adhesive tape.
A process for preparing permeable adhesive tapes, comprising applying an homogeneous dispersion of water and a water absorptive high-molecular weight compound in a solution comprising an acrylic pressure sensitive adhesive agent in an organic solvent onto a sheet having a surface provided with a releasing agent, wherein said dispersion comprises water in an amount within the range of 5-30 parts by total weight of said solution, and laminating a porous backing material on said surface of said sheet to obtain a permeable adhesive.
Dependencies are inferred from the claim text.