EP 1637632 A1 20060322 - Device for producing filaments from thermoplastic material
Title (en)
Device for producing filaments from thermoplastic material
Title (de)
Vorrichtung zur Herstellung von Filamenten aus thermoplastischem Kunststoff
Title (fr)
Dispositif pour la production de filaments en matériau thermoplastique
Publication
Application
Priority
EP 04022248 A 20040917
Abstract (en)
The melt blowing head (2) has a core (3) feeding molten plastic to a row of nozzle bores (4). On each side of the core, primary air is blown against the sides of the filaments, close to the nozzle openings. At least one secondary blowing-air supply is provided. This impinges on the filaments (1) from the sides, below the blowing head. Primary air is supplied on both sides through gaps (5) between the core and nozzle lips (6). Gap width (w) and spacing (x) between core tip and a notional horizontal extension (broken line) of the nozzle lips, is adjustable. The secondary air blast is introduced preferably at 75[deg]-90[deg] with respect to the axis (7) through the nozzle bore (4). It is introduced at 90[deg]. It is heated above room temperature, to preferably 60[deg]C or more. Its relative humidity is preferably less than 20%. It is blown from both sides against the filaments. Blowing from at least one side is constant. Blowing from at least one side is pulsed. A unit (8) is provided, onto which the filaments are laid, to form a spun-bonded fleece fabric.
IPC 8 full level
D01D 4/02 (2006.01); D01D 5/098 (2006.01); D04H 3/00 (2006.01)
CPC (source: EP KR US)
D01D 4/00 (2013.01 - KR); D01D 4/025 (2013.01 - EP US); D01D 5/098 (2013.01 - EP US); D04H 3/02 (2013.01 - KR)
Citation (search report)
- [X] US 5075068 A 19911224 - MILLIGAN MANCIL W [US], et al
- [X] WO 9409200 A1 19940428 - EXXON CHEMICAL PATENTS INC [US]
- [X] WO 9218677 A1 19921029 - MINNESOTA MINING & MFG [US]
- [X] US 4622259 A 19861111 - MCAMISH LARRY H [US], et al
- [X] US 5523033 A 19960604 - SHAMBAUGH ROBERT L [US]
- [X] EP 0474421 A2 19920311 - CHICOPEE CORP [US]
- [X] US 6488801 B1 20021203 - BODAGHI HASSAN [US], et al
- [X] US 4753843 A 19880628 - COOK RONALD F [US], et al
- [X] WO 9932692 A1 19990701 - KIMBERLY CLARK CO [US]
- [X] EP 0564784 A1 19931013 - KIMBERLY CLARK CO [US]
- [A] WO 2004001104 A1 20031231 - 3M INNOVATIVE PROPERTIES CO [US]
- [A] WO 9705306 A1 19970213 - KIMBERLY CLARK CO [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1637632 A1 20060322; EP 1637632 B1 20070801; AT E368759 T1 20070815; BR PI0504077 A 20060502; BR PI0504077 B1 20150804; CN 1757800 A 20060412; CN 1757800 B 20100505; DE 502004004519 D1 20070913; DK 1637632 T3 20071029; ES 2287619 T3 20071216; JP 2006083511 A 20060330; KR 100783450 B1 20071207; KR 20060051299 A 20060519; MX PA05009748 A 20060531; US 2006061006 A1 20060323
DOCDB simple family (application)
EP 04022248 A 20040917; AT 04022248 T 20040917; BR PI0504077 A 20050916; CN 200510104075 A 20050915; DE 502004004519 T 20040917; DK 04022248 T 20040917; ES 04022248 T 20040917; JP 2005269633 A 20050916; KR 20050085835 A 20050914; MX PA05009748 A 20050913; US 22623105 A 20050915