Extrusion head for foamed material, in particular for polyvinylc

Details Extrusion head for foamed material, in particular for polyvinylc Extrusion head for foamed material, in particular for polyvinylc

1990-04-23

1992-06-23

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 459, 425 4C, 425467, 425817C, 425192R, B29C 6722, B29C 4712

Patent

active

051240963

ABSTRACT:
The extrusion head has a body which accommodates a male element and which defines, in co-operation with the male element, a passage for the material to be extruded. The passage extends around the male element and leads outward through an extrusion hole located proximate to an end of the head. The end of the male element which is orientated in the direction of flow of the material has at least one channel through which material is delivered inside the flow of material which flows out of the extrustion hole.

REFERENCES:
patent: 3413388 (1968-11-01), Lux et al.
patent: 3713762 (1973-01-01), Oisugu
patent: 3764642 (1973-10-01), Boutillier
patent: 3857914 (1974-12-01), Aishima et al.
patent: 3941544 (1976-03-01), Barth
patent: 3993721 (1976-11-01), Soda et al.
patent: 4192839 (1980-03-01), Hayashi et al.
patent: 4362683 (1982-12-01), Otsuka et al.

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