Process of making air filter fabric
US4112037A · kind A · utility
22Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1977 |
| Grant date | Sep 5, 1978 |
| Priority date | — |
| Expiry date | Jan 31, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2239/0659
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The disclosure is of a method of making air filter fabrics from non-woven, thermoplastic, synthetic polymeric resin, staple textile fibers and of the fabrics so made. The method comprises providing a non-woven web of the fibers, coating the fibers with a fiber stabilizing agent, pressing the fibers together so as to rupture the film at cross-over points and fusing the fibers together at the sites of the ruptured film. The product filter fabrics are characterized by controlled high permeability, strength, wear resistance, dimensional stability, lint free surfaces and advantageous particle release properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.