Denso Corporation

Tadashi Tsuruta

Satoru Yamaguchi

Yasunao Miura

Hiromi Katou

A method and an apparatus capable of extrusion molding a comparatively wide, thin ceramic sheet using a screw extruder while suppressing the wrinkling thereof. The molding apparatus includes a screw-type extruder and a mold at the forward end of the extruder is used to extrusion mold a ceramic sheet from the ceramic material introduced into the extruder by way of the mold. The extrusion molding is carried out while regulating the temperature of the portion of the ceramic material passing through the mold corresponding to each of a plurality of areas (control zones) into which the mold is divided.

Method and apparatus for molding ceramic sheet

Method for molding ceramic sheet

An extrusion molding apparatus for a ceramic molded product which is capable of passing a ceramic material smoothly through a filter unit is disclosed. The extrusion molding apparatus comprises a mold ( ) for molding a ceramic molded product, a screw extruder ( ) for supplying a ceramic material ( ) to the mold ( ), and a filter unit ( ) for filtering the ceramic material ( ) at the extrusion outlet ( ) of the screw extruder ( ). The screw extruder ( ) has built therein a screw ( ) for kneading while at the same time leading the ceramic material ( ) forward, and further has, on the front part thereof, a spatula portion ( ) adapted to move over the inlet surface ( ) of the filter unit ( ) and there is a predetermined distance D between the spatula portion and the inlet surface ( ).

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Aichi-pref., Japan

Tadashi Tsuruta