Method of controlling water repellency in non-woven fabric

Details Method of controlling water repellency in non-woven fabric Method of controlling water repellency in non-woven fabric

1977-04-04

1978-09-05

Lusignan, Michael R.

Coating processes

With post-treatment of coating or coating material

Heating or drying

34 41, 128284, 128285, 128287, 128290P, 128290R, 156305, 427392, 427391, A61F 1316, D21H 134

Patent

active

041121538

ABSTRACT:
A method is provided for increasing the water-repellency of a normally water-wettable, bonded, non-woven fabric bearing a surfactant selected from the group consisting of non-ionic surfactants and anionic surfactants. The method comprises heating a selected region of the fabric to an elevated temperature at which the surfactant is unstable, and maintaining the region at the elevated temperature for a time period sufficient to denature the surfactant without damaging the fabric.

REFERENCES:
patent: 3683916 (1972-08-01), Mesek et al.
patent: 3730184 (1973-05-01), Mesek
patent: 3837343 (1974-09-01), Mesek
patent: 3965904 (1976-06-01), Mesek et al.

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