Patent ID: 9580358
Date: 2017-02-28
CPC Classifications: B01D,B28B,C04B

Claim:
1. A manufacturing method of a honeycomb structure, comprising: a forming step of forming a ceramic forming raw material containing a first ceramic raw material, and forming a honeycomb formed body including a non-fired partition wall parent material to partition and form a plurality of cells which become through channels of a fluid; a first plugging step of arranging plugged portions in open frontal areas of predetermined cells in an end surface of the honeycomb formed body on an inflow side of the fluid; a collecting layer forming raw material coating step of attaching, to the surface of the non-fired partition wall parent material in the remaining cells of the honeycomb formed body which are not provided with the plugged portions, a collecting layer forming raw material containing a second ceramic raw material for the collecting layer which has a higher melting point than the first ceramic raw material and an aqueous electrolyte solution having a concentration of 50 to 100% of a saturated solubility; a second plugging step of arranging plugged portions in open frontal areas of remaining cells in an end surface of the honeycomb formed body on an outflow side of the fluid; and a firing step of firing the honeycomb formed body coated with the collecting layer forming raw material to prepare the honeycomb structure.