Methods and apparatus for meltblowing of polymeric material utilizing fluid flow from an auxiliary manifold
US7901614B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | May 22, 2006 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jan 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/905
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus for meltblowing utilize an auxiliary manifold to dispense a fluid between an orifice of a die that is expelling polymeric fibers and an exit of a duct that is dispensing a secondary flow of gas onto the fibers. The fluid dispensed from the auxiliary manifold reduces a recirculation zone of the secondary flow between the exit and the orifice that, absent the fluid from the manifold, results in errant fibers that are blown back into the face of the die by the recirculating secondary flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.