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1. (WO1991009162) PROCESS AND SPINNING DEVICE FOR MAKING MICROFILAMENTS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/009162 International Application No.: PCT/DE1990/000941
Publication Date: 27.06.1991 International Filing Date: 03.12.1990
Chapter 2 Demand Filed: 19.07.1991
IPC:
D01D 4/02 (2006.01) ,D01D 5/084 (2006.01) ,D01D 5/098 (2006.01) ,D04H 3/16 (2006.01)
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS
4
Spinnerette packs; Cleaning thereof
02
Spinnerettes
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS
5
Formation of filaments, threads, or the like
08
Melt-spinning methods
084
Heating filaments, threads or the like, leaving the spinnerettes
D TEXTILES; PAPER
01
NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
D
MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS
5
Formation of filaments, threads, or the like
08
Melt-spinning methods
098
with simultaneous stretching
D TEXTILES; PAPER
04
BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
H
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING
3
Non woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
08
characterised by the method of strengthening or consolidating
14
with bonds between thermoplastic yarns or filaments produced by welding
16
with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
Applicants:
COROVIN GMBH [DE/DE]; Woltorfer Straße 124 D-3150 Peine, DE (AllExceptUS)
RUZEK, Ivo, E. [DE/DE]; DE (UsOnly)
BRUCKNER, Walter [DE/DE]; DE (UsOnly)
Inventors:
RUZEK, Ivo, E.; DE
BRUCKNER, Walter; DE
Agent:
THÖMEN, Uwe; Zeppelinstraße 5 D-3000 Hannover 1, DE
Priority Data:
P 39 41 824.319.12.1989DE
Title (DE) VERFAHREN UND SPINNVORRICHTUNG ZUR HERSTELLUNG VON MIKROFILAMENTEN
(EN) PROCESS AND SPINNING DEVICE FOR MAKING MICROFILAMENTS
(FR) PROCEDE ET DISPOSITIF DE FILAGE POUR LA PRODUCTION DE MICROFILAMENTS
Abstract:
(DE) Verfahren zur Herstellung von Mikrofilamenten mit sehr kleinem Durchmesser für synthetische Garne oder für Spinnvliese, wobei die Mikrofilamente aus mit einer Schmelze gespeisten Spinndüsen durch ein Spinnloch mit großer Abzugsgeschwindigkeit abgezogen und verstreckt werden. Es ist vorgesehen, die Mikrofilamente unmittelbar nach dem Austritt aus dem Spinnloch einem heißen Luftstrom auszusetzen, der das Mikrofilament mantelförmig umhüllt. Dadurch wird eine kontinuierliche Abkühlung der Mikrofilamente erzielt, wodurch trotz hoher Abzugsgeschwindigkeit Filamentabbrüche vermieden sind und wodurch ferner auch bei sehr kleinen Durchmessern die Abzugsgeschwindigkeiten der Spinnvorrichtung beibehalten werden können.
(EN) Process for making microfilaments with very small diameters for synthetic yarns or for fabrics in which the microfilaments are drawn from spinning nozzles supplied with molten material through a spinning aperture at high drawing speeds and extended. The microfilaments are to be exposed immediately after leaving the spinning aperture to a stream of hot air surrounding the microfilament like a jacket. This provides continuous cooling of the microfilaments so that, despite the high drawing speed, breakage of the filaments is prevented and the spinning device can continue to be run at high drawing speeds even for very small diameters.
(FR) Procédé de production de microfilaments de très faible diamètre pour des fils synthétiques ou des nappes de monofils continus, selon lequel les microfilaments sont extraits et étirés, sous grande vitesse d'extraction, à travers un trou de filage, à partir de filières alimentées avec une matière en fusion. Il est prévu d'exposer les microfilaments, immédiatement après leur sortie du trou de filage, à un courant d'air chaud entourant le microfilament à la manière d'une enveloppe. On obtient ainsi un refroidissement en continu des microfilaments, de sorte qu'en dépit d'une vitesse d'extraction élevée, on évite des cassures de filaments et qu'en outre , les vitesses d'extraction du dispositif de filage peuvent être maintenues, même à de très faibles diamètres.
Designated States: JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0541552US5310514JPH05502483KR1019920703889