Manufacturing method for honeycomb structure and honeycomb structure
US9555355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Mar 27, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/349
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is a technique to manufacture a honeycomb structure reducing a width of dimensional difference generated during firing between an end part and a central part and having excellent thermal shock resistance, and the method includes: a honeycomb formed body preparing step of extruding a kneaded material including a cordierite forming raw material A, to prepare a formed body; a plugged honeycomb formed body preparing step of filling cell openings thereof with a plugging material which includes a forming raw material containing a cordierite forming raw material B and resin balloon of 1.0 to 15 mass % and has a difference in firing shrinkage rate of −1.0 to +2.0% from the formed body, to prepare a plugged formed body; and a honeycomb structure preparing step of firing the prepared plugged formed body, to prepare a honeycomb structure provided with porous plugged portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.