Pultrusion apparatus including a molding die

Details Pultrusion apparatus including a molding die Pultrusion apparatus including a molding die

1989-09-22

1991-01-29

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Adjustable shaping orifice or shape imparting insert member

72468, 72473, 156441, 156500, B29C 4712

Patent

active

049882783

ABSTRACT:
Pultrusion apparatus and tongue-in-groove die is provided for the fabrication of thermoplastic tape containing long fiber reinforcement. The tongue-in-groove die includes a first mold half having a groove and a pair of protruding wall portions which form sidewalls for the groove, and a second mold half having a tongue to match the groove. The second mold half is juxtaposed with respect to the first mold half so as to define a wedge-shaped passage between the tongue and the groove which has an inlet and an outlet and which converges from the inlet to the outlet. The tongue-in-groove die further includes a mechanism for adjusting the inlet and outlet clearances between the tongue and groove at the inlet and outlet respectively.

REFERENCES:
patent: 569335 (1896-10-01), Hudson
patent: 1392919 (1921-10-01), Craig
patent: 2007301 (1935-07-01), Lemieux
patent: 2379088 (1945-06-01), Koppel
patent: 3244784 (1966-04-01), Boggs
patent: 3378884 (1968-04-01), Meteer
patent: 4201534 (1980-05-01), Phipps
patent: 4445957 (1984-05-01), Harvey
patent: 4680224 (1987-07-01), O'Connor

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