Process for preparing a permeable adhesive tape.

摘要

A process for preparing a permeable adhesive tape which comprises; preparing a dispersion comprising, as a dispersion medium, an organic solvent solution containing a natural or synthetic rubber and/or acrylic pressure sensitive adhesive agent and a polyfunctional isocyanate compound, and at least water and hydrophobic inorganic fine particles and optionally a water absorptive high molecular weight compound dispersed in the organic solvent solution, applying said dispersion directly onto a porous material or impregnating said porous material with said dispersion, thereafter said dispersion-applied or impregnated porous material being dried by heating; or applying said dispersion onto a releasing sheet, heat drying said dispersion-applied sheet and laminating a porous material on the dispersion-applied surface thereof, thereby providing the permeable adhesive tape in which the permeable adhesive layer and the porous material are integrated.