Process and apparatus for making multicomponent meltblown web fibers and webs
US6776858B2 · kind B2 · utility
38Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2001 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Jun 23, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/637
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for forming multiple component meltblown fibers by extruding a first distinct melt-processable polymer through a row of first extrusion orifices, simultaneously extruding a second distinct melt-processable polymer through a row of second extrusion orifices, fusing the first and second melt-processable polymers into extruded composite filaments after extrusion, and pneumatically attenuating and breaking the extruded composite filaments with jets of high velocity gas so as to form the multiple component meltblown fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.