Die for extruder

Details Die for extruder Die for extruder

1983-05-06

1985-03-12

Thurlow, Jeffery

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

264177R, 2642098, 425467, B29F 304

Patent

active

045042101

ABSTRACT:
A die, associated with an extruder and provided with an inwrought flow channel with displacement cores for shaping a plasticized synthetic resin bulk stream into a profile cross-section with hollow chambers, has a die housing that is composed of several die members with vertical and/or horizontal mold joints. The displacement cores in the flow channel are connected to the die housing by core-holding webs that separate the flow channel by distances corresponding to the thicknesses of the webs, thus subdividing the bulk stream into separate partial streams, the cross-section of the combined partial streams being equal to the cross-section of the bulk stream, and the displacement cores being enlarged by the thickness of the core-holding webs so that the partial streams, with the flow cross-sections remaining the same, are conducted along the core-holding webs.

REFERENCES:
patent: 3103037 (1963-09-01), Bennett et al.
patent: 3267518 (1966-08-01), Juel et al.
patent: 3784345 (1974-01-01), Wissinger et al.
patent: 4015925 (1977-04-01), Heilmayr
patent: 4017240 (1977-04-01), Nelson
patent: 4021172 (1977-05-01), Prinz
patent: 4045154 (1977-08-01), Ratheiser
patent: 4120926 (1978-10-01), Titz
patent: 4268239 (1981-05-01), Herrington, Jr.
patent: 4296062 (1981-10-01), Gauchel et al.
patent: 4321228 (1982-03-01), de Kok
patent: 4383812 (1983-05-01), Calcagni

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