Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1984-09-24
1986-09-16
McCamish, Marion C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
156209, 156219, 428171, A61F 1316, B32B 512
Patent
active
046122311
ABSTRACT:
A method of improving absorbency of air laid bonded fibrous webs and the products resulting therefrom, the preferred method comprising the step of imprinting at least one surface of the fibrous web between a pair of cylindrical rolls under a pressure of at least 100 pounds/lineal inch, the compacted area of each imprinted web surface being at least 40%, preferably at least 50%, of the total imprinted surface. In the preferred embodiment of the method, the fibrous web is first wetted with water, the imprinting step then being conducted with imprinting means heated to about 140.degree. to about 180.degree. C.
The products obtained have densified zones underlying the compacted areas, the density thereof being at least 0.1 gm./cc., which zones enhance absorbency as compared to unimprinted webs by at least 25%. The preferred webs provided by the method are imprinted with a grid-like pattern, said pattern preventing nesting of individual sheets in product rolls and containers.
REFERENCES:
patent: 3005364 (1961-10-01), Broderick
patent: 3017304 (1962-01-01), Burgeni
patent: 3337338 (1967-08-01), Krock
patent: 3414459 (1968-12-01), Wells
patent: 3616157 (1971-10-01), Smith
patent: 3647618 (1972-03-01), Back et al.
patent: 3692622 (1972-09-01), Dunning
patent: 3776807 (1973-12-01), Dunning
patent: 3806406 (1974-04-01), Ely
patent: 3867225 (1975-02-01), Nystram
patent: 3903342 (1975-09-01), Roberts
patent: 3905863 (1975-09-01), Ayers
patent: 3974025 (1976-08-01), Ayers
patent: 4103058 (1978-07-01), Humlicek
patent: 4125659 (1978-11-01), Klowak et al.
patent: 4127637 (1978-11-01), Pietreniak
patent: 4134948 (1979-01-01), Baker
patent: 4135024 (1979-01-01), Callahan
patent: 4145664 (1979-03-01), McConnell et al.
patent: 4191609 (1980-03-01), Trokhan
patent: 4192713 (1980-03-01), Valkama
patent: 4207367 (1980-01-01), Baker
patent: 4211227 (1980-07-01), Anderson
patent: 4443512 (1984-04-01), Delvaux
Bouchette Michael P.
Van den Akker Johannes A.
Watt William R.
James River-Dixie Northern, Inc.
McCamish Marion C.
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