Apparatus and method for impregnating fibrous strands with plast

Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...

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118124, 118125, 118420, 425114, 425204, B29C 3108, B29C 6700

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active

058796029

ABSTRACT:
An apparatus for impregnating fibrous strands with plastic material as matrix material including: an impregnating core having an outer limiting surface; an impregnating shell defining a cavity therein having an inner limiting surface, the impregnating shell completely enveloping the impregnating core and being disposed with respect to the impregnating core such that the limiting surfaces together define an impregnating channel therebetween, the limiting surfaces concentrically enclosing the impregnating channel along a joint symmetry axis such that the impregnating channel has a ring-shaped cross section in a plane transverse to the joint symmetry axis, the ring-shaped cross section having an outside dimension which diminishes by stages in a flow direction for the impregnation, feeding channels for the fibrous strands and the matrix material being defined at an intake side of the impregnating channel and a discharge opening for impregnated fibrous strands being defined at an exit side of the impregnating channel; and a plurality of expanding elements disposed on the limiting surfaces along the impregnating channel in the flow direction for the impregnation. A method for producing long fiber reinforced plastic materials or unidirectionally fiber reinforced profiles involves the use of the above apparatus in conjunction with an extruder or a pultrusion plant, respectively.

REFERENCES:
patent: 2751320 (1956-06-01), Jacobs et al.
patent: 3697209 (1972-10-01), Schlesser
patent: 4484966 (1984-11-01), Kawamoto
patent: 4699579 (1987-10-01), Bourdon et al.
patent: 5084221 (1992-01-01), Matsuno et al.
patent: 5096645 (1992-03-01), Fink
patent: 5110275 (1992-05-01), Scheuring
patent: 5114633 (1992-05-01), Stewart
patent: 5120380 (1992-06-01), Strachan
patent: 5268050 (1993-12-01), Azari
patent: 5277566 (1994-01-01), Augistin et al.
patent: 5393536 (1995-02-01), Brandt et al.
patent: 5529652 (1996-06-01), Asai et al.
patent: 5540797 (1996-07-01), Wilson
H.-J. Wolf: "Grosse Scherkraefte". In: Maschinenmarkt, Wuerzhburg, Germany, 100, 1994, pp. 28-31.

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