Patent ID: 9095993
Filing Date: 2015-08-04
Classification: B28B,B29B,B29C

Abstract:
1. An extrusion-molding device for producing a green honeycomb molded body with a cell structure, the device comprising: a housing with a flow passage for transporting a paste raw material composition; a screw provided upstream of the flow passage for kneading the raw material composition and transporting it downstream; a die provided downstream of the flow passage and having slits corresponding to the shape of the cell structure of the green honeycomb molded body; a resistance tube for connecting the flow passage and the die; and a fragmenting board provided between the screw and the die, having through-passages through which the raw material composition passes from an upstream end side to a downstream end side thereof, wherein the through-passages comprise: upstream channels composed of a plurality of flow passages extending downstream from the upstream end side of the fragmenting board; and downstream channels extending up to the downstream end side of the fragmenting board and having flow passage cross-sectional shapes different from those of the upstream channels, wherein the upstream channels are composed of a plurality of flow passages extending downstream essentially straight from the upstream end side of the fragmenting board, while the downstream channels are composed of slits forming a pattern identical or similar to the die slits.