Paper making and fiber liberation – Processes and products – Non-uniform – irregular or configured web or sheet
Patent
1988-01-14
1989-07-18
Chin, Peter
Paper making and fiber liberation
Processes and products
Non-uniform, irregular or configured web or sheet
162111, 162113, 162117, 162204, 162280, 162281, 162289, 162306, 162361, 162362, 162363, D21H 502
Patent
active
048490547
ABSTRACT:
A bulky, embossed, fibrous web material having a basis weight in the range of 5 to 50 lbs./ream and geometric means tensile strength (TS) (kg/3" width), apparent bulk (AB) (cal. pts./lb. ream), and oil holding capacity (OH) (ml/gm fiber) substantially satisfying, in absolute values, the relationships (0.27 BW-1) TS>(0.17 BW-1), AB>[0.7-(TS.div.20)], and OH 0.063TS.sup.2 -1.13TS+8.6. The invention includes an apparatus and a method of manufacturing the product comprising wet pressing a fibrous web to about 30% to 50% solids, conveying the web to a transfer position proximate the three-dimensional surface of an embossing fabric moving at a speed less than that of the web at the transfer position, and applying a vacuum to the web through the embossing fabric to transfer and conform the web to the three-dimensional surface of the fabric, the vacuum magnitude being in the range of 1 to 20 inches Hg.
REFERENCES:
patent: 4551199 (1985-11-01), Weldon
Chin Peter
James River--Norwalk, Inc.
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