Patent · US Active

Process for producing microfibrillated cellulose

US8647468B2 · kind B2 · utility

11Cited by

4References

14Claims

0Family size

Assignee

Stora Enso OYJ · FI

Inventors

Isto Heiskanen · Imatra, FI
Kaj Backfolk · Lappeenranta, FI
Marianna Vehvilainen · Tampere, FI
Taina Kamppuri · Tampere, FI
Pertti Nousiainen · Tampere, FI

Key dates

Filing date	Jul 2, 2010
Grant date	Feb 11, 2014
Priority date	—
Expiry date	Jul 2, 2030

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H11/20
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A process for treating cellulosic fibers comprising pre-treating the fibers with an enzyme in a first enzymatic treatment followed by mechanical pre-treating the fibers in a first mechanical treatment and a second enzymatic treatment followed by a second mechanical treatment of the fibers to form micofibrillated cellulose. In this way it is possible to produce mircofibrillated cellulose (MFC) in an improved and energy efficient way.

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