Method of manufacturing a collapsible mold
US8002017B2 · kind B2 · utility
1Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2010 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Mar 12, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22C9/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a collapsible mold and a method of manufacturing the same, the collapsible mold has extremely low moisture-absorption properties, does not change in surface properties thereof due to absorption of moisture and swelling, and is storable for a long time without absorbing moisture and swelling. Specifically, the method manufactures a collapsible mold containing at least any of calcium oxide and magnesium oxide. The method includes a step of bringing the collapsible mold into contact with carbon dioxide immediately after a step of burning the collapsible mold or a step of casting the collapsible mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.