Method of increasing the meltblown jet thermal core length via hot air entrainment
US6613268B2 · kind B2 · utility
15Cited by
33References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Jun 14, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for producing super fine meltblown fibers increases the length of the meltblown jet thermal core to increase the dwell time of the extruded thermoplastic polymer within the jet thermal core. Through use of the method it is practical to use low viscosity resins and further to provide meltblown nonwovens with superior barrier properties to the passage of fluids and particularly gases. The method further provides a useful means for blooming internal additives to the surface of the fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.