Patent · US Expired

Process for the production of paper

US6551457B2 · kind B2 · utility

43Cited by

30References

30Claims

0Family size

Assignee

AKZO NOBEL N.V. · NL

Inventors

Caroline Westman · Gothenburg, SE
Tom Lindstrom · Sollentuna, SE
Janne Laine · Espoo, FI
Maria Norell · Mölndal, SE

Key dates

Filing date	Sep 20, 2001
Grant date	Apr 22, 2003
Priority date	—
Expiry date	Sep 20, 2021

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H17/44
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for the production of paper from an aqueous suspension containing cellulosic fibers, and optional fillers, which comprises draining the suspension to obtain a paper web and subjecting the obtained paper web to impulse pressing by passage through at least one press nip having at least one heated roll which is in contact with the web and heated to a temperature above 100° C., wherein a chemical system comprising a polymer component and micro- or nanoparticles are added to the suspension or the paper web before the paper web passes the press nip of the impulse unit.

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