Patent · US Expired

Method of producing a paper having a three-dimensional pattern

US6503370B2 · kind B2 · utility

39Cited by

17References

16Claims

0Family size

Assignee

SCA HYGIENE PRODUCTS AB · SE

Inventors

Holger Hollmark · Stockholm, SE
Lennart Reiner · Matfors, SE
Thomas Billgren · Lindome, SE
Kaveh Tondkar · Umeå, SE
Mats Söderberg · Sundsvall, SE
Bengt Järrehult · Umeå, SE

Key dates

Filing date	Apr 2, 2001
Grant date	Jan 7, 2003
Priority date	—
Expiry date	Apr 2, 2021

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21F3/0281
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Method of producing paper having a three-dimensional pattern of alternating raised and recessed portions which is given the paper in connection with impulse drying, at which the wet paper web is passed through at least one press nip (12) comprising a rotatable roll (13) which is heated and that the paper web when passing through the press nip is given a three-dimensional pattern either by means of a pattern wire (11) and/or by the fact that the heated roll (13) is provided with a three-dimensional pattern, and where the wet paper web (10) before entering said press nip (12) is given a basis weight variation in a non-random pattern.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.