D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
117/63
D04H 1/62 (2006.01) B31D 1/04 (2006.01) D21F 11/00 (2006.01) D21H 25/00 (2006.01) D21H 27/02 (2006.01)
Patent
CA 1155007
PATTERN DENSIFIED FIBROUS WEB HAVING SPACED, BINDER IMPREGNATED HIGH DENSITY ZONES, AND METHOD OF MAKING SUCH A WEB ABSTRACT A soft, pattern densified fibrous web such as a paper sheet which web generally comprises a relatively low bond, high bulk, vaulted field and a patterned array of spaced zones of relatively high fiber density, at least a substantial proportion of which dense zones are at least partially impregnated with binder material; and method of making such a web. The method generally entails forming a low bond, pattern densified fibrous web; supporting dense zones of the web on a patterned array of spaced supports; displacing the unsupported portions of the web into the spaces intermediate the spaced supports; and applying a binder material to dense supported zones of the web. For instance, such a web may be made by: forming a pattern densified embryonic web from an aqueous slurry of low bond fibers; supporting dense zones of the embryonic web on outwardly facing knuckles of an impriiting carrier fabric and subjecting it to a differential pressure to effect displacing unsupported portions thereof out of the top-surface-plane of the knuckles and into the interfila- mentary spaces of the carrier fabric; predrying the embryonic web to a fiber consistency of from about 30 to about 95 percent or more,preferably from about 60 to about 90 percent; gravure impregnating dense supported zones of the predried web with binder material; and finally drying the web. The degree of impregnating and bonding in the dense zones may be increased by applying mechanical compression to the impregnated zones subsequent to applying the binder material. The web may also be creped to increase its stretch and bulk, and to increase its softness by disrupting some of the interfilamentary bonds within the web.
369973
Ayers Peter G.
Raley John M.
Gowling Lafleur Henderson Llp
The Procter & Gamble Company
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