Global Patent Index - EP 0931862 A1

EP 0931862 A1 19990728 - Process for the production of elementary vegetable bast fibres

Title (en)

Process for the production of elementary vegetable bast fibres

Title (de)

Verfahren zur Herstellung von Bastfasern

Title (fr)

Procédé pour la fabrication de fibres libériennes

Publication

EP 0931862 A1 19990728 (EN)

Application

EP 98200195 A 19980123

Priority

EP 98200195 A 19980123

Abstract (en)

A process for the production of elementary vegetable bast fibres is provided, which process comprises the steps of a) cutting raw vegetable bast fibres to a fibre length of 8 to 400 mm, b) chemically treating the cut fibres to remove lignin and pectin compounds, c) drying the fibres obtained in step b), d) mechanically opening the dried fibres using a mechanical opening device. The process allows the production of elementary, largely cellulosic vegetable bast fibres having the following chemical properties: a lignin content of 0 to 5%, a uronic acid content of 0 to 2.5%, a rhamnose content of 0 to 0.5%, based on the oven-dry weight of the fibres, and the following physical properties: a single elementary fibre tensile strength of 100 to 600 MPa and an elasticity modulus of 35 to 100 GPa.

IPC 1-7

D01C 1/02; D04H 1/42

IPC 8 full level

D01C 1/02 (2006.01); D04H 1/04 (2012.01); D04H 1/42 (2012.01); D04H 1/425 (2012.01); D04H 1/4266 (2012.01); D21C 3/00 (2006.01); D21C 5/00 (2006.01); D21H 11/12 (2006.01)

CPC (source: EP)

D01C 1/02 (2013.01); D04H 1/04 (2013.01); D04H 1/425 (2013.01); D04H 1/4266 (2013.01); D21C 3/006 (2013.01); D21C 5/00 (2013.01); D21H 11/12 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 0931862 A1 19990728; AU 2441399 A 19990809; WO 9937834 A1 19990729

DOCDB simple family (application)

EP 98200195 A 19980123; AU 2441399 A 19990125; NL 9900041 W 19990125