Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1976-02-13
1978-06-06
Cannon, J.C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
128184, 128290R, 128290P, 128296, 162112, 428138, 428152, 428195, 428198, 428318, A61F 1316, A61F 1318, A61F 1320, B32B 310
Patent
active
040937658
ABSTRACT:
A soft, absorbent fibrous web is formed from an aqueous slurry and includes randomly arranged and contacting wood pulp fibers produced by the sulfate process which constitute the predominate fiber component, by weight, of the web. A portion of the web thickness is substantially free of debonders and wet strength additives, and the fibers in that portion of the web are held together almost exclusively by papermaking bonds. A plurality of partially fractured areas are provided in spaced-apart regions which are substantially uniformly distributed throughout the web. An adhesive bonding material extends only partially through the web thickness to form adhesively bonded regions having a greater strength than underlying regions which are bonded together almost exclusively by the papermaking bonds. The web of this invention has a basis weight in the range of from about 25 to about 100 lbs/2,880 feet.sup.2, a density of from about 0.08 grams/cc to less than about 0.16 grams/cc. a liquid holding capacity of greater than 500%, an absorbency rate of less than 2.5 seconds, a wicking rate of greater than 14 cm/10 minutes and a wet-cross-machine-direction tensile strength of greater than 2 oz./inch. Preferably the fibrous web is employed as a wicking layer beneath a low density fluff batt in a disposable diaper or similar disposable sanitary product.
REFERENCES:
patent: RE27453 (1972-08-01), Schutte et al.
patent: 3484594 (1974-11-01), Buell
patent: 3817827 (1974-06-01), Benz
patent: 3821068 (1914-06-01), Shaw
patent: 3879257 (1975-04-01), Gentile et al.
patent: 3903342 (1975-09-01), Roberts
patent: 3908058 (1975-09-01), Russell et al.
patent: 3973067 (1976-08-01), Newman
Cannon J.C.
Faigus Martin L.
Foley William J.
Scott Paper Company
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