Patterned dry laid fibrous web products of enhanced absorbency

Details Patterned dry laid fibrous web products of enhanced absorbency Patterned dry laid fibrous web products of enhanced absorbency

D - Textiles, Paper

04

H

117/43

D04H 1/58 (2006.01) A47L 13/16 (2006.01)

Patent

CA 1193919

ABSTRACT OF THE INVENTION 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 to about 180°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.

412745

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