Method and apparatus for producing fibre-reinforced plastic mouldings
AssigneeKraussMaffei Technologies GmbH
InventorMaximilian Schadhauser
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AssigneeKraussMaffei Technologies GmbH
InventorMaximilian Schadhauser
Estimating the term…
A method and a device for producing fibre-reinforced plastic mouldings, using coated fibre strands. For the coating of the fibre strands, an air flow of ionised air is produced and guided through a Venturi nozzle. Powder from a storage container is taken by means of a screw conveyor and supplied to the Venturi nozzle, a flow of a powder-air mixture being present or forming behind the Venturi nozzle in the direction of flow. This stream is introduced into a chamber and fibre strands that are earthed or ionised unlike the powder are passed through the chamber and through the powder-air mixture flowing through the chamber, powder particles being deposited on the fibre strands. The fibre strands guided out of the chamber therefore have a coating, and the fibre strands coated in this way are supplied to a plasticising device of an injection moulding machine or an extrusion machine.
A method for producing fibre-reinforced plastic mouldings, wherein fibre strands are coated and fed to a plasticizing device in which fibre strands are drawn in by a single screw or a double screw and incorporated into a molten plastic material, wherein a mixture of plastic melt and fibre material is produced and this mixture is supplied to a shaping device, wherein for coating the fibre strands initially an air stream of ionized air is produced and guided through a Venturi nozzle, wherein powder is removed from a storage container by means of a screw conveyor and supplied to the Venturi nozzle, wherein a stream of a powder-air mixture is formed in the direction of flow downstream of the Venturi nozzle and this stream is introduced into a chamber, wherein fibre strands that are earthed or ionized opposite to the powder are passed through the powder-air mixture flowing through the chamber, wherein powder particles are deposited on the fibre strands and the fibre strands guided out of the chamber have a coating and wherein the fibre strands thus coated are supplied to the plasticizing device.
Dependencies are inferred from the claim text.