Non-woven product

Details Non-woven product Non-woven product

1975-07-01

1976-11-23

Kendall, Ralph S.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428171, 428296, 128290R, 128290P, A61F 1318

Patent

active

039938204

ABSTRACT:
A fluid absorbing and storing structure comprising a highly porous, loosely compacted cellulosic fibrous batt, and integral therewith, a continuous paper-like, densified, cellulosic fibrous layer having selectively thickened portions for rapidly directing fluid away from an initially wetted area. The major unthickened portion of the paper-like, densified layer merges with the loosely compacted batt at a generally planar interface, and the thickened portions extend through the plane of the interface and into the loosely compacted batt to give the structure increased strength. The batt may be contoured to provide increased fluid storage capacity in the central area of the structure. A marginal fluid boundary of loosely compacted cellulosic fibers may be provided to aid in containing fluid within the structure. Further, end edge boundaries in the form of thickened, densified transverse lines near the ends of the densified layer may be included to provide a means for transferring fluid flow laterally to adjacent longitudinal thickened portions. The thickened portions may be coherent and unitary, or may include substantially fiber-free voids surrounded by fibrous strata.

REFERENCES:
patent: 2952260 (1960-09-01), Burgeni
patent: 2955641 (1960-10-01), Burgeni
patent: 3017304 (1962-01-01), Burgeni
patent: 3060936 (1962-10-01), Burgeni
patent: 3343543 (1967-09-01), Glassman
patent: 3371667 (1969-03-01), Morse
patent: 3403681 (1968-10-01), Hoey et al.
patent: 3420235 (1969-01-01), Harman
patent: 3494362 (1970-02-01), Burgeni
patent: 3545441 (1970-12-01), Graydahl
patent: 3707430 (1972-12-01), Costanza et al.

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