Extrusion die for extruding a honeycomb structure

Details Extrusion die for extruding a honeycomb structure Extrusion die for extruding a honeycomb structure

1981-07-10

1983-05-24

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

264177R, 425380, 425465, 425467, B29F 304

Patent

active

043848419

ABSTRACT:
An extrusion die for extruding a honeycomb structure having a thick outer peripheral wall without generating any distortion or deformation therein, comprises a die body provided with a plurality of disconnected feed passageways and interconnected grid-shaped extrusion slots, an annular die mask which is closely contacted with the outer peripheral portion of the outlet face of the die body. In the outlet face of the die body, along the inner peripheral wall of the die mask, an annular groove of which depth is smaller than that of the extrusion slots is formed so as to open in the extruding direction.

REFERENCES:
patent: 3618167 (1971-11-01), Brassard et al.
patent: 3790654 (1974-02-01), Bagley
patent: 4168944 (1979-09-01), Morikawa et al.
patent: 4243370 (1981-01-01), Higuchi et al.
patent: 4278412 (1981-07-01), Ozaki et al.
patent: 4298328 (1981-11-01), Frost
patent: 4298564 (1981-11-01), Higuchi et al.
patent: 4349329 (1982-09-01), Naito et al.

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