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1. (WO2015126761) MELT BLOWING DIE, APPARATUS AND METHOD

Pub. No.:    WO/2015/126761    International Application No.:    PCT/US2015/015913
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Sat Feb 14 00:59:59 CET 2015
IPC: D01D 4/06
D01D 5/08
D01D 5/098
D01D 5/14
Applicants: NANOFIBER, INC.
Inventors: ALLEN, Martin Anthony
Title: MELT BLOWING DIE, APPARATUS AND METHOD
Abstract:
A melt blowing die includes a stack of plates including corresponding melt blowing die tip, die body and air functionalities. One or more rows of polymer filament extrusion orifices extend through in a stack direction across multiple plates of a stack. A gas distribution system within the stack has gas outlets are positioned to provide distributed gas flow to contact and attenuate extruded polymer filaments. One of more polymer distribution channels extend longitudinally through multiple plates in the stack direction to supply polymer to each of the rows of extrusion orifices. A polymer distribution channel is open to receive polymer feed only at a longitudinal end. A melt blowing apparatus has a collection substrate movable in a machine direction that is transverse to a stack direction in a melt blowing die. A method for producing fiber-containing material includes melt blowing using a melt blowing die with a stack of plates.