Absorbent panel having densified portion with hydrocolloid mater

Details Absorbent panel having densified portion with hydrocolloid mater Absorbent panel having densified portion with hydrocolloid mater

1976-06-14

1978-07-25

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

128284, 128296, 156279, 156282, 264131, 264134, 264324, 428288, 428409, 428507, B32B 516

Patent

active

041030621

ABSTRACT:
A densified bonded layer is formed in a panel of fluffed wood pulp fibers having particulate hydrocolloid material distributed therein by passing the panel between first and second compression means to apply pressure to the panel, at least one of the compression means being heated. By suitably selecting the temperature and pressure applied to the panel, an integral, densified, compacted, porous, absorbent fibrous layer or region having relatively high cohesive strength, relatively good capillarity, relatively good shape and volume stability and relatively high fluid retentivity can be formed therein. Particles of the hydrocolloid material are fixed within the panel by being bonded to the fibers substantially throughout the panel, and by mechanical entrapment between fibers in the densified bonded layer.

REFERENCES:
patent: 2905568 (1959-10-01), Burgeni
patent: 2955641 (1960-10-01), Burgeni
patent: 3017304 (1962-01-01), Burgeni
patent: 3141809 (1964-07-01), Di Maio et al.
patent: 3420235 (1969-01-01), Harmon
patent: 3545441 (1970-12-01), Gravdahl
patent: 3591448 (1971-07-01), Elmendorf
patent: 3670731 (1972-06-01), Harmon
patent: 3797496 (1974-03-01), Loracono
patent: 3888257 (1975-06-01), Cook et al.
patent: 3936555 (1976-02-01), Smith
patent: 3965904 (1976-06-01), Mesek et al.

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