Methods and apparatus for meltblowing of polymeric material utilizing fluid flow from an auxiliary manifold
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United States of America Patent
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Mar 8, 2011
Grant Date -
Nov 23, 2006
app pub date -
May 22, 2006
filing date -
May 23, 2005
priority date (Note) -
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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.
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