Spundbonding spin pack characterized by uniform polymer distribution and method of use
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United States of America Patent
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Issued Date -
Apr 28, 2005
app pub date -
Oct 7, 2004
filing date -
Oct 23, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A meltspinning apparatus that provides for uniform distribution of a flow of a melt-processable thermoplastic polymer in a machine direction of the meltspinning apparatus. The meltspinning apparatus includes a spin pack having a plurality of side-by-side coathanger-shaped distribution chambers. Each of the distribution chambers uniformly distributes the polymer flow in the machine direction so that the molten polymer has a substantially uniform residence time in the chamber during distribution.
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