Importance

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Abstract

The honeycomb structure forming die includes a first die in which a central region on the side of a kneaded material discharging surface has a convex region projecting toward a downstream side in an extruding direction of a kneaded material, a ring-shaped second die, and a space forming member interposed between the first die and the second die. In the first die, first kneaded material introducing holes are formed and latticed first slits are formed on the side of the kneaded material discharging surface of the convex region, and in the second die, there are formed second kneaded material introducing holes and latticed second slits communicating with the second kneaded material introducing holes, and in a space formed by the space forming member, movement of a kneaded material is performed between the first kneaded material introducing hole and the second kneaded material introducing hole.

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First Claim