Meltblown process with mechanical attenuation
US6773648B2 · kind B2 · utility
68Cited by
106References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 3, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Cellulose containing dope is extruded through orifices and into a stream of gas moving in a direction generally parallel to the direction that the filaments are formed with varying degrees of mechanical attenuation provided to the filaments using a take-up device, such as a winder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.