Apparatus and process for polygonal melt-blowing die assemblies for making high-loft, low-density webs
US5645790A · kind A · utility
52Cited by
4References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 20, 1996 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Feb 20, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H1/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a novel apparatus and process for melt-blowing fiberforming thermoplastic polymers at high rates to form high-loft, low density fine fiber webs suitable for insulation applications. The high rates are achieved by mounting melt-blowing spinnerettes on the surfaces of a polygonal cylinder and spinning fibers in a radial fashion, then deflecting the fiber streams 90 degrees by a secondary stream of cold air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.