EP1424411A1 - Vorrichtung zur Verbesserung der Spinnstabilität - Google Patents

Vorrichtung zur Verbesserung der Spinnstabilität Download PDF

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Publication number
EP1424411A1
EP1424411A1 EP02026432A EP02026432A EP1424411A1 EP 1424411 A1 EP1424411 A1 EP 1424411A1 EP 02026432 A EP02026432 A EP 02026432A EP 02026432 A EP02026432 A EP 02026432A EP 1424411 A1 EP1424411 A1 EP 1424411A1
Authority
EP
European Patent Office
Prior art keywords
filament
nozzles
filaments
improve
draw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02026432A
Other languages
English (en)
French (fr)
Other versions
EP1424411B1 (de
Inventor
Uwe Bornmann
Albert Mittermayr
Alois Punkenhofer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polyfelt GmbH
Original Assignee
Polyfelt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polyfelt GmbH filed Critical Polyfelt GmbH
Priority to DE50204553T priority Critical patent/DE50204553D1/de
Priority to DK02026432T priority patent/DK1424411T3/da
Priority to EP02026432A priority patent/EP1424411B1/de
Priority to ES02026432T priority patent/ES2249532T3/es
Priority to AT02026432T priority patent/ATE306573T1/de
Publication of EP1424411A1 publication Critical patent/EP1424411A1/de
Application granted granted Critical
Publication of EP1424411B1 publication Critical patent/EP1424411B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods

Definitions

  • filament breaks in the cooling area occur again and again at higher take-off speeds. These filament breaks are mostly due to quality fluctuations in the raw material composition.
  • the torn-off filaments are no longer kept under tension by the draw-off nozzle and, due to their lower weight, therefore move downwards much more slowly than the untorn filaments. Finally, the torn filaments are grasped by the extraction nozzles and carried along.
  • the object of the invention is a device for the fastest possible Destruction of these bridges to provide defects in the placement of the Avoid filaments and therefore also in fleece or geotextile.
  • the invention therefore relates to a device for avoiding Filament bridges between two or more extraction nozzles characterized in that a short glow wire is located between the fume cupboards is at least on the melting temperature of the for the production of the Melt spun filaments used polymer or the polymer mixture is heated.
  • the short glow wire is located between two exhaust nozzles and at least to the melting temperature of the polymer used to make the filament heated.
  • the filament is preferably operated at pyrolysis temperature, ie at about 500 ° C. As a result, no remnants of the melt stick to the filament, the filament then works self-cleaning.
  • 1 shows a device according to the invention. Therein 1 means the spinnerets, 2 the draw-off nozzles, 3 the filament, 4 the filament, 5 a torn filament which was gripped by both draw-off nozzles and 6 the contact point of this filament with the filament.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Nonwoven Fabrics (AREA)
  • Inorganic Fibers (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zur Verbesserung der Spinnstabilität, wobei gerissenen Filamente mittels eines zwischen den Abzugsdüsen situierten Glühdrahts getrennt werden.

Description

Bei der Herstellung von schmelzgesponnenen Fasern mittels pneumatischer Abzugsdüsen kommt es bei höheren Abzugsgeschwindigkeiten immer wieder zu Filamentbrüchen im Kühlbereich.
Diese Filamentbrüchen sind meist auf Qualitätsschwankungen in der Rohstoffzusammensetzung zurückzuführen..
Die abgerissenen Filamente werden durch die Abzugsdüse nicht mehr unter Spannung gehalten und bewegen sich daher durch ihr geringeres Eigengewicht deutlich langsamer als die nicht gerissenen Filamente nach unten. Schließlich werden die gerissenen Filamente wird durch die Abzugsdüsen erfasst und mitgerissen.
Durch die gerissenen Filamente entstehen jedoch Fehlstellen in der anschließenden Filamentablage bei der Vliesherstellung und in weiterer Folge auch Fehlstellen in einem verfestigten Geotextil.
Ein Großteil der gerissenen Filamente wird meist durch zwei nebeneinanderliegende Abzugsdüsen erfasst, die Filamente bilden eine Brücke zwischen diesen Abzugsdüsen und können der Vliesablage nicht zugeführt werden.
Aufgabe der Erfindung ist es eine Vorrichtung zur schnellst möglichen Zerstörung dieser Brücken bereitzustellen um Fehlstellen bei der Ablage der Filamente und damit auch im Vlies oder Geotextil zu vermeiden.
Gegenstand der Erfindung ist daher eine Vorrichtung zur Vermeidung von Filamentbrücken zwischen zwei oder mehreren Abzugsdüsen, dadurch gekennzeichnet, dass zwischen den Abzugsdüsen ein kurzer Glühdraht situiert ist, der mindestens auf die Schmelztemperatur des für die Herstellung der Schmelzspinnfilamente verwendeten Polymers oder der Polymermischung erhitzt ist.
Der kurze Glühdraht wird zwischen zwei Abzugsdüsen situiert und mindestens auf die Schmelztemperatur des zur Filamentherstellung verwendeten Polymers erhitzt.
An der Kontaktstelle mit einem von beiden Abzugsdüsen erfassten Filament wird dieses Filamente geschmolzen, die Brücke getrennt und die Filamentteile von den Abzugsdüsen weitertransportiert.
Vorzugsweise wird der Glühdraht bei Pyrolysetemperatur betrieben, also bei etwa 500°C. Dadurch bleiben am Glühdraht keine Reste der Schmelze haften, der Glühdraht arbeitet dann selbstreinigend.
In Fig. 1 ist eine erfindungsgemäße Vorrichtung dargestellt.
Darin bedeuten 1 die Spinndüsen, 2 die Abzugsdüsen, 3 den Glühdraht, 4 die Filament, 5 ein gerissenes Filament das von beiden Abzugsdüsen erfasst wurde und 6 die Kontaktstelle dieses Filaments mit dem Glühdraht.

Claims (2)

  1. Vorrichtung zur Vermeidung von Filamentbrücken zwischen zwei oder mehreren Abzugsdüsen, dadurch gekennzeichnet, dass zwischen den Abzugsdüsen ein kurzer Glühdraht situiert ist, der mindestens auf die Schmelztemperatur des für die Herstellung der Schmelzspinnfilamente verwendeten Polymers oder der Polymermischung erhitzt ist.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Glühdraht auf Pyrolysetemperatur betrieben wird und dadurch selbstreinigend arbeitet.
EP02026432A 2002-11-27 2002-11-27 Vorrichtung zur Verbesserung der Spinnstabilität Expired - Lifetime EP1424411B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE50204553T DE50204553D1 (de) 2002-11-27 2002-11-27 Vorrichtung zur Verbesserung der Spinnstabilität
DK02026432T DK1424411T3 (da) 2002-11-27 2002-11-27 Indretning til at forbedre spindestabiliteten
EP02026432A EP1424411B1 (de) 2002-11-27 2002-11-27 Vorrichtung zur Verbesserung der Spinnstabilität
ES02026432T ES2249532T3 (es) 2002-11-27 2002-11-27 Dispositivo para mejorar la estabilidad de hilatura.
AT02026432T ATE306573T1 (de) 2002-11-27 2002-11-27 Vorrichtung zur verbesserung der spinnstabilität

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02026432A EP1424411B1 (de) 2002-11-27 2002-11-27 Vorrichtung zur Verbesserung der Spinnstabilität

Publications (2)

Publication Number Publication Date
EP1424411A1 true EP1424411A1 (de) 2004-06-02
EP1424411B1 EP1424411B1 (de) 2005-10-12

Family

ID=32241278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02026432A Expired - Lifetime EP1424411B1 (de) 2002-11-27 2002-11-27 Vorrichtung zur Verbesserung der Spinnstabilität

Country Status (5)

Country Link
EP (1) EP1424411B1 (de)
AT (1) ATE306573T1 (de)
DE (1) DE50204553D1 (de)
DK (1) DK1424411T3 (de)
ES (1) ES2249532T3 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806503A1 (de) * 1996-05-07 1997-11-12 Murata Kikai Kabushiki Kaisha Maschine zum Falschdrallzwirnen eines Zwirns
DE19708139A1 (de) * 1997-02-28 1998-09-03 Erich Roser Fadenliefervorrichtung, insbesondere für Strick- und Wirkmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806503A1 (de) * 1996-05-07 1997-11-12 Murata Kikai Kabushiki Kaisha Maschine zum Falschdrallzwirnen eines Zwirns
DE19708139A1 (de) * 1997-02-28 1998-09-03 Erich Roser Fadenliefervorrichtung, insbesondere für Strick- und Wirkmaschinen

Also Published As

Publication number Publication date
DK1424411T3 (da) 2006-01-30
ATE306573T1 (de) 2005-10-15
DE50204553D1 (de) 2006-02-23
EP1424411B1 (de) 2005-10-12
ES2249532T3 (es) 2006-04-01

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