Extrusion device for producing honeycomb structures

Details Extrusion device for producing honeycomb structures Extrusion device for producing honeycomb structures

1981-01-21

1983-01-11

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Plural distinct feed inlets

264177R, 425380, 425467, B29F 304

Patent

active

043680259

ABSTRACT:
An extrusion device comprises a die provided with feed passageways and grid-shaped extrusion slots, and a die mask covering the peripheral portion of the die on the extrudable material outlet side. The die mask is provided with a plurality of disconnected openings which are formed in the lower end of the inner surface thereof at predetermined intervals so as to be communicated with the extrusion slots of the peripheral portion of the die. By this extrusion device, the extrudable material is supplied from the openings into the outer periphery of the extruded body to form a honeycomb structure having a smooth outer peripheral surface and a thick outer wall.

REFERENCES:
patent: 3790654 (1974-02-01), Bagley
patent: 3947214 (1976-03-01), Cunningham
patent: 3983283 (1976-09-01), Bagley
patent: 4008033 (1977-02-01), Folmar et al.
patent: 4042738 (1977-08-01), Gulati
patent: 4168944 (1979-09-01), Morikawa et al.
patent: 4178145 (1979-12-01), Hamamoto et al.
patent: 4233351 (1980-11-01), Okumura et al.
patent: 4278412 (1981-07-01), Ozaki et al.

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