EP 1775376 B1 20100512 - Method and device for obtaining wood fibers from wood chips
Title (en)
Method and device for obtaining wood fibers from wood chips
Title (de)
Verfahren und Vorrichtung zum Gewinnen von Holzfasern aus Holzhackschnitzeln
Title (fr)
Procédé et dispositif pour obtenir des fibres de bois à partir de copeaux de bois
Publication
Application
Priority
DE 102005048958 A 20051013
Abstract (en)
[origin: EP1775376A2] Making wood fibers from wood chips by feeding the chips through a tamping screw into a boiler, where they are exposed to high pressure and temperature, and discharging the chips under rapid expansion so that they separate into fibers, comprises measuring the conductivity of a plug of chips leaving the screw and using the result as a control parameter for controlling downstream processing of the chips and/or fibers. An independent claim is also included for apparatus for making wood fibers from wood chips, comprising a tamping screw (1) for feeding the wood chips into a boiler, where they are exposed to high pressure and temperature, and a discharge device for discharging the chips under rapid expansion so that they separate into fibers, comprises a sensor (11) for measuring the conductivity of a plug of chips leaving the screw.
IPC 8 full level
CPC (source: EP)
D21B 1/12 (2013.01); D21B 1/36 (2013.01); D21C 7/06 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1775376 A2 20070418; EP 1775376 A3 20070905; EP 1775376 B1 20100512; AT E467714 T1 20100515; DE 102005048958 A1 20070419; DE 102005048958 B4 20070809; DE 502006006929 D1 20100624; PL 1775376 T3 20101029; PT 1775376 E 20100706
DOCDB simple family (application)
EP 06021281 A 20061011; AT 06021281 T 20061011; DE 102005048958 A 20051013; DE 502006006929 T 20061011; PL 06021281 T 20061011; PT 06021281 T 20061011