Method of forming highly absorbent fibrous webs and resulting pr

Details Method of forming highly absorbent fibrous webs and resulting pr Method of forming highly absorbent fibrous webs and resulting pr

1977-12-19

1979-11-13

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

156290, 162157C, 264115, 264121, 264207, 428283, 428364, 428910, B32B 2302

Patent

active

041744179

ABSTRACT:
Webs are formed by mixing chemically modified cellulose fibers in a carrier and dewatering to form a mixture of gel-like consistency having a minimum of external water wherein the fibers have not lost their individual structures. This mixture is sprayed or injected into a gas stream of volume and velocity such that the individual fibers are separated. These fibers are collected into highly-absorbent webs having varying structures. Due to the rapid separation of fibers and subsequent drying, reduced interfiber hydrogen bonding takes place resulting in good tactile properties such as softness and drape. By controlling the direction and velocity of the fibers, webs can be produced having structures ranging from very dense mats to loose, fluffy batt-like products. The webs of the invention possess high absorbency, good wicking, and strength sufficient for handling. They may be used as components for wipers, surgical sponges, and personal care products such as sanitary napkins, tampons, and disposable diapers.

REFERENCES:
patent: 3046078 (1962-07-01), Salsburg
patent: 3065041 (1962-11-01), Sven
patent: 3194727 (1965-07-01), Adams et al.
patent: 3455643 (1969-07-01), Gruber et al.
patent: 3589364 (1971-06-01), Dean et al.
patent: 3658790 (1972-04-01), Bernardin
patent: 3670679 (1970-06-01), Mitchell
patent: 3691154 (1972-09-01), Bernardin
patent: 3997647 (1976-12-01), Lassen

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