Extrusion head for extruding plastomeric or elastomeric material

Details Extrusion head for extruding plastomeric or elastomeric material Extrusion head for extruding plastomeric or elastomeric material

1975-12-18

1977-09-27

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

264174, 425376R, 425461, B29F 310

Patent

active

040508676

ABSTRACT:
An extrusion head for extruding a plastomeric or elastomeric material on at least two filaments having a diameter of the order of 0.1 mm. and having a high modulus of elasticity while maintaining a constant spacing between the filaments and a process for such extrusion. The head comprises a mandrel with a cylindrical portion and a frusto-conical portion, the mandrel having grooves equal in number to the number of filaments extending along the surfaces of both portions for guiding the filaments. The frusto-conical portion has channels between the grooves for feeding the material between the filaments. A die with an opening having parallel walls for guiding the filaments and having a conical surface spaced from the frusto-conical portion is mounted adjacent the latter to provide a space for flow of the material. A further element adjacent the die may be used to extrude further material over the filaments embedded in the material extruded therebetween.

REFERENCES:
patent: 326021 (1885-09-01), Cruickshank
patent: 2488576 (1949-11-01), Berggren
patent: 2659932 (1953-11-01), McNamee
patent: 2766481 (1956-10-01), Henning

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