EP 0033988 A3 19810916 - PATTERN DENSIFIED FIBROUS WEB HAVING SPACED, BINDER IMPREGNATED HIGH DENSITY ZONES, AND METHOD OF MAKING SUCH A WEB

Title (en)

PATTERN DENSIFIED FIBROUS WEB HAVING SPACED, BINDER IMPREGNATED HIGH DENSITY ZONES, AND METHOD OF MAKING SUCH A WEB

Publication

EP 0033988 A3 19810916 (EN)

Application

EP 81200093 A 19810126

Priority

US 11792880 A 19800204

Abstract (en)

[origin: EP0033988A2] The invention provides 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 fibre density, at least a substantial proportion of which dense zones are at least partially impregnated with binder material. 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. A method of making such a web is also disclosed. 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.

IPC 1-7

D21D 3/00; D21H 5/02

IPC 8 full level

B31F 1/12 (2006.01); D21F 11/00 (2006.01); D21H 25/00 (2006.01); D21H 27/00 (2006.01); D21H 27/02 (2006.01)

CPC (source: EP)

D21F 11/006 (2013.01); D21H 25/005 (2013.01); D21H 27/02 (2013.01)

Citation (search report)

[X] US 3692622 A 19720919 - DUNNING CHARLES E
[X] US 3776807 A 19731204 - DUNNING C, et al
[X] US 2958608 A 19601101 - BARNARD KENNETH H
US 3755220 A 19730828 - FREIMARK B, et al
US 4134948 A 19790116 - BAKER JR JOHN H
[AD] US 3301746 A 19670131 - SANFORD LAWRENCE H, et al

Designated contracting state (EPC)

AT BE CH DE FR GB IT LU NL SE

DOCDB simple family (publication)

EP 0033988 A2 19810819; EP 0033988 A3 19810916; EP 0033988 B1 19860611; AT E20365 T1 19860615; CA 1155007 A 19831011; DE 3174791 D1 19860717; ES 499051 A0 19820701; ES 8205908 A1 19820701; GR 72141 B 19830920; IE 51743 B1 19870318; IE 810209 L 19810804; JP S56159400 A 19811208

DOCDB simple family (application)

EP 81200093 A 19810126; AT 81200093 T 19810126; CA 369973 A 19810203; DE 3174791 T 19810126; ES 499051 A 19810203; GR 810164019 A 19810202; IE 20981 A 19810203; JP 1556581 A 19810204