MELTBLOWN SPINNING WITH SEPARATE AND INDEPENDENT AIR AND POLYMER TEMPERATURE CONTROL

MELTBLOWN SPINNING WITH SEPARATE AND INDEPENDENT AIR AND POLYMER TEMPERATURE CONTROL

A meltblown system includes a die including a die inlet end to receive molten polymer from a polymer source, a cavity located downstream from the die inlet end through which the molten polymer flows, and a die outlet end to receive the molten polymer from the cavity and deliver to outlet orifices at...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Wilkie, Arnold, De La Hoz, Tony, Johnston, Timothy, Haggard, Jeff
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS
NATURAL OR ARTIFICIAL THREADS OR FIBRES
SPINNING
TEXTILES
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Beschreibung
Zusammenfassung:A meltblown system includes a die including a die inlet end to receive molten polymer from a polymer source, a cavity located downstream from the die inlet end through which the molten polymer flows, and a die outlet end to receive the molten polymer from the cavity and deliver to outlet orifices at the die outlet end. A fluid supply includes a channel that delivers fluid to the die outlet end to attenuate fibers formed from molten polymer emerging from the die outlet end. The fluid supply provides fluid at a temperature T2 that differs from a temperature T1 of the molten polymer within the cavity, and the meltblown system is configured to independently maintain the molten polymer within the cavity at the temperature T1 during operation of the meltblown system.