PERMANENTLY HYDROPHILIC NONWOVEN FABRIC

摘要

PROBLEM TO BE SOLVED: To inexpensively provide a nonwoven fabric hydrophilic and permeable towards polar liquids.

SOLUTION: There is provided the process for coating a polymer nonwoven fabric comprising the steps of: (a) plasma and/or corona assisted treatment of the surface of the nonwoven fabric to obtain a charged and/or polar surface; and (b) formation of a first coating layer comprising at least one first charged and/or polar chemical species, the first chemical species being a hydrophilic polymer, wherein the overall charge or partial charge facing the nonwoven fabric surface of the first chemical species carries the opposite sign from the average charge introduced to the nonwoven fabric fiber surface in the step (a).

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