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1. (WO2017033774) METHOD FOR MANUFACTURING HONEYCOMB FILTER

Pub. No.:    WO/2017/033774    International Application No.:    PCT/JP2016/073771
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 13 01:59:59 CEST 2016
IPC: C04B 35/64
Applicants: SUMITOMO CHEMICAL COMPANY, LIMITED
住友化学株式会社
Inventors: KADOWAKI Takuya
門脇 拓也
Title: METHOD FOR MANUFACTURING HONEYCOMB FILTER
Abstract:
According to the present invention, from a green molded body that contains a ceramic material and in which an end of a penetration hole on the side of a lower end surface or an upper end surface is sealed by a sealing part, a honeycomb filter is manufactured by, at an upper end surface member placement step, placing an upper end surface member containing a ceramic material on the upper end surface in a state in which the lower end surface is facing downward and the upper end surface is facing upward, and, at a baking step, baking the green molded body having the upper end surface member placed on the upper end surface. At the upper end surface member placement step, as a result of placing the upper end surface member containing the ceramic material on the upper end surface, transition toward the upper end surface member occurs for a spot where concentration of stress, which is due to a temperature gradient and which becomes a cause of cracking during baking, occurs. As a result, cracking of the honeycomb filter during baking can be prevented.