EP0396646B1 - Dispositif de filature a chaud avec des vitesses de devidement elevees, et filament produit au moyen de ce dispositif - Google Patents

Dispositif de filature a chaud avec des vitesses de devidement elevees, et filament produit au moyen de ce dispositif Download PDF

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Publication number
EP0396646B1
EP0396646B1 EP89908959A EP89908959A EP0396646B1 EP 0396646 B1 EP0396646 B1 EP 0396646B1 EP 89908959 A EP89908959 A EP 89908959A EP 89908959 A EP89908959 A EP 89908959A EP 0396646 B1 EP0396646 B1 EP 0396646B1
Authority
EP
European Patent Office
Prior art keywords
spinning
thread
spinneret
melt
speeds
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.)
Expired - Lifetime
Application number
EP89908959A
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German (de)
English (en)
Other versions
EP0396646B2 (fr
EP0396646A1 (fr
Inventor
Horst Martin
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.)
Viscosuisse SA
Original Assignee
Rhone Poulenc Viscosuisse SA
Societe de la Viscose Suisse SA
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4249607&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0396646(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rhone Poulenc Viscosuisse SA, Societe de la Viscose Suisse SA filed Critical Rhone Poulenc Viscosuisse SA
Publication of EP0396646A1 publication Critical patent/EP0396646A1/fr
Application granted granted Critical
Publication of EP0396646B1 publication Critical patent/EP0396646B1/fr
Publication of EP0396646B2 publication Critical patent/EP0396646B2/fr
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
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • 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
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys

Definitions

  • the invention relates to a device for melt spinning at take-off speeds above 5000 m / min, consisting of a spinning block, with a spinneret package and a thread suction nozzle and a spinning chamber which is arranged between the spinneret package and the thread suction nozzle and with its inlet opening with the spinning nozzle package and with its outlet opening the thread take-off nozzle is connected in a gastight manner, and a filament is produced by the process.
  • Thread extraction nozzles for thread cooling in melt spinning at speeds above 5000 m / min are known. On the one hand, they suck in the threads and, on the other hand, they serve to supply a cooling gas to the threads in parallel with them.
  • such a nozzle is used in connection with a heating chamber, the heating chamber being mounted directly under the spinning block.
  • EP-A-0 244 217 also describes the use of such a nozzle for the same purpose in connection with a Venturi nozzle operated with a hot gas.
  • the Venturi nozzle is also located directly under the spinning block.
  • Both the heating chamber and the hot gas-powered Venturi nozzle serve, among other things, to improve spinning and thread properties. As far as the thread properties are concerned, this especially has a positive influence on the dyeability.
  • the thread suction nozzle for thread cooling is located between 50 and 600 mm below it in the case of the heating chamber and at a sufficient distance below it in the case of the Venturi nozzle that the air escaping there does not impair the operation of the same.
  • the threads get in there as an open bundle and are still quite fluid on their way there due to the delayed thread cooling, i.e. little solidified.
  • the object of the invention is to provide a device which allows the titer regularity and the strength of a very quickly spun filament to be improved.
  • Another task is to reduce the energy-consuming operation of a heating chamber or the likewise energy-consuming specific hot air consumption.
  • the object is achieved in a device according to the characterizing part of claim 1.
  • the arrangement according to the invention creates a negative pressure in the spinning chamber, which sucks in cooling air from the environment and which surprisingly achieves excellent titer regularity along the resulting thread.
  • the spinning chamber is attached in a gas-tight manner with its inlet opening on the spinning block and with its outlet opening on the thread suction nozzle.
  • the attachment is carried out in a known manner and using sealing material.
  • the formation of the bottom of the spinning chamber into a funnel has advantages in terms of air flow technology.
  • the spinning chamber essentially consists of a tube which is closed at its periphery and which is designed as a sieve tube only in a certain area, specifically from 150 to 350 mm, in particular from 200 to 300 mm, from the spinneret pack.
  • the perforated area can be provided with any openings for the gas passage.
  • the air permeability of the sieve tube should be 20 to 40%, i.e. the perforated surface should have openings of 20 to 40%.
  • a filament produced with the device according to the invention has a titer irregularity of ⁇ 0.60% Uster.
  • a melt-spinnable granulate is melted in a known manner in the spinning block 1 and is tensioned into filaments 5 by the spinneret pack 2.
  • the suction effect of the thread suction nozzle 7 creates a negative pressure in the spinning chamber 3.
  • ambient air flows through the sieve tube 4 of the spinning chamber 3 and cools the filaments 5, which are drawn off at high speed by means of the bobbin 10.
  • a polyester granulate with an intrinsic viscosity (IV) of 0.62 dl / g is melted at 298 ° C. in spinning block 1, spun into 24 filaments with a total titer of 50 dtex at a take-off speed of 5500 m / min.
  • the spinning chamber was 460 mm long and perforated between 150 and 250 mm below the nozzle plate with a permeability of 38%.
  • the thread suction nozzle 7 was subjected to an air pressure of 100 kPa (1 bar) and indicated an air consumption of 5.6 Nm 3 / h. After leaving the thread suction nozzle 7, the thread was provided with a spin preparation and swirled in a known manner.
  • the table shows that a filament thread produced with the device according to the invention has a significant improvement in yarn cleanliness and an increase in strength.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Un dispositif de filature à chaud comporte une chambre de filature (3) sensiblement fermée montée de manière étanche aux gaz entre un faisceau de filières (2) et un dispositif d'aspiration des mèches cassées (7). La chambre de filature est partiellement ajourée uniquement dans la région espacée de 150 à 350 mm du faisceau de filières. A une vitesse de dévidement de 5500 m/min, le filament produit présente une irrégularité de titre inférieure à 0,60 % U.

Claims (6)

1. Dispositif de filature dans la masse fondue ayant des vitesses de dévidement supérieurs a 5000 m/min, comprenant un bloc de filage (1) avec une filière (2) et une tuyère d'aspiration pour le fil (7) de même qu'une chmbre de filage (3) qui est montée entre la filière (2) et la tuyère d'aspiration du fil (7) et est reliée hermétiquement à l'aide de son ouverture d'entrée avec la filière (2) et avec son ouverture de sortie avec la tuyère d'aspiration du fil (7), caractérisé en ce que la chambre de filage (3) qui est fondamentalement fermée se situe dans un domaine de distance entre 100 et 350 mm de la filière (2) et est partiellement utilisée en tant que tuyau perforé.
2. Dispositif selon la revendiction 1, caractérisé en ce que la chambre de filage (3) à la forme d'un entonnoir (6) dans sa partie inférieure.
3. Dispositif selon la revendication 1, caractérisé en ce que la paroie de l'entonnoir (6) est arrondie.
4. Dispositif selon la revendication 1, caractérisé en ce que le tuyau perforé (4) a une longueur de 50 à 150 mm
5. Dispositif selon la revendication 3, caractérisé en ce que le tuyau perforeé (4) a une perméabilité à l'air de 20 à 40 %.
6. Filament en polyester fabriqué avec le dispositif d'après les revendications 1-5, caractérisé avec une irrégularité du titre < 0.60 % U.
EP89908959A 1988-08-24 1989-08-14 Dispositif de filature a chaud avec des vitesses de devidement elevees Expired - Lifetime EP0396646B2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH314688 1988-08-24
CH3146/88 1988-08-24
CH314688 1988-08-24
PCT/CH1989/000147 WO1990002222A1 (fr) 1988-08-24 1989-08-14 Dispositif de filature a chaud avec des vitesses de devidement elevees, et filament produit au moyen de ce dispositif

Publications (3)

Publication Number Publication Date
EP0396646A1 EP0396646A1 (fr) 1990-11-14
EP0396646B1 true EP0396646B1 (fr) 1993-12-22
EP0396646B2 EP0396646B2 (fr) 2001-01-03

Family

ID=4249607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89908959A Expired - Lifetime EP0396646B2 (fr) 1988-08-24 1989-08-14 Dispositif de filature a chaud avec des vitesses de devidement elevees

Country Status (5)

Country Link
EP (1) EP0396646B2 (fr)
JP (2) JPH03500908A (fr)
BR (1) BR8907063A (fr)
DE (1) DE58906504D1 (fr)
WO (1) WO1990002222A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52133048U (fr) * 1976-04-05 1977-10-08
SG67284A1 (en) * 1991-09-06 1999-09-21 Akzo Nobel Nv Apparatus for high speed spinning multifilament yarns and use thereof
BR9400682A (pt) * 1993-03-05 1994-10-18 Akzo Nv Aparelho para a fiação em fusão de fios multifilamentares e sua aplicação

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA944913A (en) * 1970-04-01 1974-04-09 Toray Industries, Inc. Apparatus and method for manufacturing continuous filaments from synthetic polymers
JPS5411715B2 (fr) * 1971-10-05 1979-05-17
JPS5167408A (ja) * 1974-12-02 1976-06-11 Toray Industries Shinkuboshihoho
KR860000205B1 (ko) * 1981-01-19 1986-03-03 세꼬 마오미 상압 염색 가능한 폴리에스테르 섬유
US5034182A (en) * 1986-04-30 1991-07-23 E. I. Du Pont De Nemours And Company Melt spinning process for polymeric filaments

Also Published As

Publication number Publication date
JPH03500908A (ja) 1991-02-28
JPH081665U (ja) 1996-12-17
BR8907063A (pt) 1991-01-02
DE58906504D1 (de) 1994-02-03
WO1990002222A1 (fr) 1990-03-08
EP0396646B2 (fr) 2001-01-03
JP2535880Y2 (ja) 1997-05-14
EP0396646A1 (fr) 1990-11-14

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