EP 0474422 A2 19920311 - Restrictor bar and sealing arrangement for a melt blown die apparatus.
Title (en)
Restrictor bar and sealing arrangement for a melt blown die apparatus.
Title (de)
Drosselstange und Abdichtungssystem für eine Spinndüse zum Schmelzblasspinnen.
Title (fr)
Barre de restriction et système d'étanchéité pour une filière du type fusion-soufflage.
Publication
Application
Priority
US 57442990 A 19900829
Abstract (en)
Melt-blown die apparatus are provided for producing a fibrous web from a polymer material. The apparatus includes die means for extruding a molten stream of the polymer which includes heated cavity means (46) therein for containing a molten quantity of this polymer. The apparatus also includes primary gas means for providing a pressurized gas at an exit end of the die means and restrictor bar means (16,18) for selectively restricting a flow of the molten quantity of the polymer within the heated cavity means. This invention permits greater operational control of the polymer flow for accounting for different polymer selections and melt temperatures. <IMAGE>
IPC 1-7
IPC 8 full level
D01D 4/02 (2006.01); D01D 4/06 (2006.01); D01D 5/08 (2006.01); D01D 5/084 (2006.01); D04H 1/56 (2006.01)
CPC (source: EP KR)
D01D 4/00 (2013.01 - KR); D01D 4/025 (2013.01 - EP); D04H 1/56 (2013.01 - EP)
Designated contracting state (EPC)
AT BE DE DK ES FR GB GR IT LU NL SE
DOCDB simple family (publication)
EP 0474422 A2 19920311; EP 0474422 A3 19920527; AU 8275691 A 19920305; JP H04257306 A 19920911; KR 920004617 A 19920327; PT 98796 A 19931130
DOCDB simple family (application)
EP 91307842 A 19910828; AU 8275691 A 19910823; JP 23902191 A 19910827; KR 910014985 A 19910829; PT 9879691 A 19910828