Absorbent facing and method for making the same

Details Absorbent facing and method for making the same Absorbent facing and method for making the same

1985-10-02

1986-12-16

Rosenbaum, C. Fred

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

604370, A61F 1316

Patent

active

046294570

ABSTRACT:
An absorbent facing is disclosed which has significant one-way valve characteristics for aqueous fluids. The facing is produced by a process which comprises the steps of: (a) superimposing a thin polymer film and a first web comprising absorbent fibers, to form a second web; (b) heating the second web to a temperature such that the polymer film is in a formable state; (c) while the said second web is so heated, simultaneously applying shearing and compressive forces to the second web to form said polymer film into a coating on said first web, the coating comprising a fine pattern of continuous areas which lie between and interconnect discontinuous areas, wherein the polymer in the continuous areas comprises a continuous or substantially continuous coating on the surface of said first web, and wherein most of the polymer in the discontinuous areas is coated on individual fibers; and (d) cooling the coated web thus formed to cool the polymer below its forming temperature.

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patent: 3994299 (1976-11-01), Rarami
patent: 4115176 (1978-09-01), Ekstand
patent: 5703897 (1972-11-01), Mack et al.

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