Spunbond system and process
US12264413B2 · kind B2 · utility
0Cited by
5References
24Claims
0Family size
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Key dates
| Filing date | Mar 5, 2021 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Jun 10, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system and method for providing a plurality of fibers from a spinneret; subjecting the fibers to quench air; attenuating the fibers through a closed stretching unit; reducing a velocity of the plurality of fibers in a diffuser that is spaced apart from an exit of the closed stretching unit in a direction of travel of the fibers, the diffuser having opposed diverging sidewalls; and subjecting the fibers to an applied electrostatic charge before the fibers enter the diffuser, wherein the electrostatic charge is applied by one or more electrostatic charging units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.