Patent · US Expired

Method for the manufacture of products containing fibers of lignocellulosic material

US5100511A · kind A · utility

2Cited by

11References

11Claims

0Family size

Inventors

Rune Simonson · Gothenburg, SE
Brita Ohlsson · Mölnlycke, SE
Birgit stman · Solna, SE

Key dates

Filing date	Feb 4, 1991
Grant date	Mar 31, 1992
Priority date	—
Expiry date	Feb 4, 2011

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB27N3/00
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method for the manufacture of products containing fibers of lignocellulosic material which involves the disintegration of a lignocellulosic material into fibers and forming and pressing of the fiber web into the product in question, which is preferably in the form of fiberboard (board products). The material that forms the fibers is impregnated with lignin in conjunction with water and at a pH which does not substantially exceed 12.5. When the lignin has been absorbed by the material it is fixed against leaching by water through the modification of said lignin into an essentially water-insoluble form.

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