Method and apparatus for improved quenching of nonwoven filaments
US6117379A · kind A · utility
9Cited by
27References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 29, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Jul 29, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for improved quenching of nonwoven filaments utilizing a turbulence inducing bar arrangement disposed in a stream of quenching gas between the quenching gas supply apparatus and the group of filaments being extruded. The bar arrangement increases the turbulence of the quenching gas so that the gas applied to the filament group has a turbulence intensity of at least about 5%. The turbulent quenching gas penetrates the interior of the filament bundle to provide more efficient removal of heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.