Denso Corporation

Hitoshi Kanmura

Satoru Yamaguchi

Toshiaki Tanida

Kouji Suzuki

Akinobu Muto

Takahiro Kondou

Noboru Ogino

A method of manufacturing a honeycomb structure and a through hole forming device used in the manufacture of the honeycomb structure are provided, in which the step of closing a part of the cell ends at an end surface of the honeycomb structure is rationalized. In closing a part of the cell ends () at the end surface () of a honeycomb structure body (), a film () is attached to the end surface () of the honeycomb structure body () in such a manner as to cover the cell ends (). The portion of the film () located at the cell ends () to be closed is thermally melted or burnt off thereby to form through holes (). The end surface () is dipped in a slurry containing an end surface closing material, so that the slurry is caused to enter the cell ends () by way of the through holes (). After that, the slurry is hardened while at the same time removing the resin film ().

Method of manufacturing ceramic honeycomb structure and device for forming through holes

A method of sealing the cells of a ceramic honeycomb body ( ) and a cell sealing material ( ) are disclosed which can suppress the deformation and dissolution of the portions of the ceramic honeycomb body dipped in the cell sealing material. An end surface ( ) of the ceramic honeycomb body ( ), with the portions of the end surface ( ) not to be sealed covered with a masking material, is dipped in the cell sealing material ( ) thereby to seal the cells in a predetermined part of the end surface. The cell sealing material ( ) is composed of ceramic particles and an assistant for fluidizing the ceramic particles. The assistant has the property of not substantially redissolving a binder contained in the ceramic honeycomb body.

Method of sealing cells of ceramic honeycomb body

Growing community of inventors

Mie Pref., Japan

Hitoshi Kanmura