Cleaning filter components
US7799144B2 · kind B2 · utility
0Cited by
7References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Mar 14, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C48/27
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of cleaning a filter component comprises subjecting the component to an atmosphere of superheated steam at a pressure of a least 0.5 bar in a vessel and subsequently decompressing the vessel to achieve a pressure reduction of at least 0.5 bar in at most 5 seconds. The method is particularly useful for the cleaning of filter components that have been used for the filtration of molten polymer (e.g. polyester) and which are at least partially blocked by solidified polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.