Global Patent Index - EP 3015576 A1

EP 3015576 A1 20160504 - Method and device for the preparation of carbon fibre semi-finished products

Title (en)

Method and device for the preparation of carbon fibre semi-finished products

Title (de)

Verfahren und Vorrichtung zur Herstellung von Carbonfaserhalbzeugen

Title (fr)

Procédé et dispositif de fabrication de semi-produits en fibre de carbone

Publication

EP 3015576 A1 (DE)

Application

EP 14190488 A

Priority

EP 14190488 A

Abstract (en)

[origin: WO2016066621A1] The present invention relates to a method for preparing fibre entanglements for producing carbon fibre semi-finished products, comprising the following steps: a) preparing of fibre entanglements at least containing carbon fibres and/or carbon fibre bundles in a spinal region; b) at least partial separating of the fibre entanglements in a turbulent flow in the spinal region to obtain separated carbon fibres and/or carbon fibre bundles; c) optionally, air separation of separated carbon fibres and/or carbon fibre bundles in the spinal region to obtain fractioned carbon fibres and/or carbon fibre bundles; d) discharging of the separated carbon fibres and/or carbon fibre bundle obtained in step b) and/or fractionated carbon fibres and/or carbon fibre bundles obtained in step c) from the spinal region into an alignment region, wherein the carbon fibre semi-finished products are obtained in or subsequently to step d). The method according to the invention further comprises at least one of the following steps: e) aligning of the carbon fibres and/or carbon fibre bundles discharged in step d) in the flow direction of a laminar flow in the alignment region, wherein the carbon fibres and/or carbon fibre bundles are stretched along the longitudinal axes thereof; f) outflow of the carbon fibres and/or carbon fibre bundles discharged in step d) and, optionally, aligned in the flow direction of the laminar flow in step e); g) depositing of the carbon fibres and/or carbon fibre bundles discharged in step d) and, optionally, aligned in the flow direction of the laminar flow in step e) and/or, optionally, obtained outflowing in step f) as a carbon fibre strip in a depositing region.

Abstract (de)

Die vorliegende Erfindung betrifft ein Verfahren zur Aufbereitung von Fasergewirren zur Herstellung von Carbonfaserhalbzeugen, das folgende Schritte umfasst: a) Bereitstellen von Fasergewirren wenigstens enthaltend Carbonfasern und/oder Carbonfaserbündel in einem Wirbelbereich; b) wenigstens teilweises Vereinzeln der Fasergewirre in einer turbulenten Strömung im Wirbelbereich unter Erhalt vereinzelter Carbonfasern und/oder Carbonfaserbündel; c) gegebenenfalls Windssichten der vereinzelten Carbonfasern und/oder Carbonfaserbündel im Wirbelbereich unter Erhalt fraktionierter Carbonfasern und/oder Carbonfaserbündel; d) Austragen der in Schritt b) erhaltenen vereinzelten und/oder in Schritt c) fraktionierten Carbonfasern und/oder Carbonfaserbündel aus dem Wirbelbereich in einen Ausrichtungsbereich, wobei die Carbonfaserhalbzeuge in oder im Anschluss an Schritt d) erhalten werden.

IPC 8 full level

D01G 9/08 (2006.01); D04H 1/4242 (2012.01)

CPC (source: EP)

D01G 9/08 (2013.01); D04H 1/4242 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 3015576 A1 20160504; WO 2016066621 A1 20160506

DOCDB simple family (application)

EP 14190488 A 20141027; EP 2015074822 W 20151027