EP0946799B1 - Procede et dispositif de fabrication de fibres industrielles en polyester - Google Patents

Procede et dispositif de fabrication de fibres industrielles en polyester Download PDF

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Publication number
EP0946799B1
EP0946799B1 EP97945717A EP97945717A EP0946799B1 EP 0946799 B1 EP0946799 B1 EP 0946799B1 EP 97945717 A EP97945717 A EP 97945717A EP 97945717 A EP97945717 A EP 97945717A EP 0946799 B1 EP0946799 B1 EP 0946799B1
Authority
EP
European Patent Office
Prior art keywords
thread
deflecting
delivery assembly
speed
filaments
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
EP97945717A
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German (de)
English (en)
Other versions
EP0946799A1 (fr
Inventor
Hans Linz
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.)
ExNex AG
Original Assignee
Rhodia Industrial Yarns AG
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 Rhodia Industrial Yarns AG filed Critical Rhodia Industrial Yarns AG
Publication of EP0946799A1 publication Critical patent/EP0946799A1/fr
Application granted granted Critical
Publication of EP0946799B1 publication Critical patent/EP0946799B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins

Definitions

  • the present invention relates to a method and a Device for the production of industrial yarns Spinning lines of melt-spun polyester filaments at speeds of 3000 to 6000 m / min, the Stretching by means of a delivery unit and a drafting unit he follows.
  • Polyester filaments for use in industrial Sector d. H. in a total titer range over 500 dtex and a strength of at least 60 cN / tex, become the predominantly manufactured in the spin stretching process, which has proven to be very inexpensive. Further Cost savings can be achieved by: the productivity of the plants by increasing the Production speed with top speeds in the range of 6,000 m / min and above. It has also proved that by increasing the Spinning speed also filaments with new properties can be obtained.
  • a spin draw process of the type is known from US-A-3,790,995 known.
  • DE-A-1 950 743 also describes a process for Spinning lines of melt-spun polyester filaments known to industrial yarns.
  • the stretching is carried out by means of a delivery plant and a faster running drafting system.
  • the stretching is after the delivering plant Arranged friction member, which with the thread in slipping touch, which causes the stretch zone in divided into two zones with different thread tension becomes.
  • the friction member can be a stationary pin or be a rotating heated roller.
  • the Draw-off speed is at a maximum of 2500 m / min specified. At higher speeds, too the time available for orientation of the Thread too short.
  • Another object is an improved device to create with which highly oriented industrial yarns can be produced.
  • the object is achieved in that the thread between the delivery unit and the drafting unit deflected and by means of at least one Thread end braking device is delayed.
  • the thread deflection is brought about by braked rollers with a structured surface and a defined average roughness.
  • the sizes v 1 and v 2 indicate the speeds of the delivery unit and the drafting unit, respectively. The speed must therefore be lower than the thread running speed at the place where they touch the deflection rollers. This can only be carried out by means of rollers which are provided with a structured surface which enables slippage between the thread and the roller surface.
  • a further improvement in stretchability was made achieved by additionally opening the pulleys a jacket temperature between 150 and 210 ° C heated.
  • the number depends on the type of extension of the thread path the required pulleys different. Under A deflection roller, which rotates by almost 180 °, may be sufficient is wrapped in the thread.
  • the main advantage of this approach is that that the pulleys can be very short because they only offer space for one or at most two thread running tracks have to. This is favorable from an investment perspective, since the cost of roles with larger working width, such as they are needed for multiple wraps, very much are much higher.
  • Figure 1 shows a schematic of the inventive Arrangement.
  • 1 denotes a delivery mechanism, consisting of a heatable driven godet 11 and a heatable godet 12.
  • a drafting system 2 consists of a heatable driven godet 21 and a heatable driven godet 22. Between the feed mechanism 1 and the drafting mechanism 2 a thread braking device 3 is arranged.
  • the thread brake device 3 is equipped with a heatable and brakeable deflection roller 31 and optionally with a heatable and brakeable deflection roller 32, which in turn are located within a thermally insulated housing 33.
  • the undrawn filament 4 comes in a known manner from a known spinning device, not shown; the drawn filament 4 'is taken up in a known manner by a winding device, not shown, for example a winder.
  • the thread braking device 3 forms the extension of the stretching zone lying in between.
  • the filament 4 comes in a manner not shown from a conventional device for melt spinning, cooling and preparation, wraps several times around the delivery mechanism 1 running at a peripheral speed v 1 , being heated according to the set jacket temperature, then arrives at the thread braking device 3 , which depends on the peripheral speed v 3 braked deflection rollers 31, 32 are wrapped around once, and is finally stretched by the drafting device 2 running at the peripheral speed v 2 in accordance with a set speed ratio (v 2 / v 1 ).
  • the filament 4 ' is then wound up in a conventional manner, possibly after passing through another godet duo (not shown).
  • the deflection rollers 31, 32 must not be smooth. she have a textured surface to a Slip between the filament 4 and the roll surface to enable.
  • the average roughness of the surface of the Deflection rollers 31, 32 are expediently in the range of 2.5 up to 3.5 micrometers. Acts to reduce abrasion it is expedient to have a hard metal surface or a coating with ceramic or other abrasion resistant materials. To avoid Fibril damage must clear the surface structure be of sharp bumps. It is useful as "Orange peel" structured.
  • the required braking of the pulleys 31 and 32 can be done purely mechanically. It is for security and reproducibility of the method advantageous if the peripheral speed of the pulleys 31 and 32 with With the help of a known control device constant is held.
  • the use of controlled frequency drives has proven particularly successful. such However, drive units must have a device for Recuperation of the braking power or with another type be equipped for energy destruction.
  • the required braking power can, depending on the stretching conditions, up to 1 watt / dtex of the stretched Filaments.
  • the melt throughput per hole was 2.45 g / min.
  • the melt jets were cooled in a conventional manner and provided with an anhydrous preparation. They were then combined into two filament bundles and drawn off from the spinning shaft at a speed v 1 of 3,100 m / min by the delivery unit 1 with godets 11, 12 heated to 120 ° C.
  • the feeder 1 was wrapped around the threads 4 six times. After a single wrap around the deflection rollers 31, 32 of the thread braking device 3 , the threads 4 were then fed to the drafting unit 2 , which was heated to 240 ° C.
  • the stretch godets 21, 22 were wrapped eight times by the threads 4.
  • the drafting zone 3 between delivery unit 1 and drafting unit 2 was extended by 1.5 m by the deflection device 3 .
  • the deflection rollers 31, 32 had a diameter of 190 mm and were provided with a ceramic-coated surface with an average roughness of 3.5 micrometers. They were heated to a temperature of 180 ° C and were braked to a speed v 3 of 5,190 m / min with a braking torque of 1 Nm each. The total braking power was 1.82 kW.
  • the threads were on another duo at 120 ° C cooled and finally wound up at a tension of 250 cN.
  • the filaments had a titer of 1100 dtex.
  • Polyethylene terephthalate of the same type as in Example 1 was melted, spun and drawn in the same manner, with the difference that the melt throughput was 3.21 g / min. This resulted in a final titer of 1,440 dtex of the drawn yarn.
  • the deflection rollers 31, 32 of the thread braking device 3 had to be acted upon with a braking torque of 1.25 Nm each in order to achieve the same peripheral speed as in Example 1.
  • the total braking power was 2.28 kW.
  • Polyester granules (polyethylene terephthalate) with a viscosity index of 114 were extruded as in Example 1 and spun into two filament yarns with 256 filaments each.
  • the multifilaments were withdrawn from the spinning shaft at 3,100 m / min.
  • the optical birefringence (DB) of the filaments thus spun was 0.065.
  • the filament yarns were fed to a feed unit 1 at 3,130 m / min and a temperature of 80 ° C., which was looped six times.
  • the drafting unit 2 had a peripheral speed of 5776 m / min and a temperature of 240 ° C. It was wrapped in threads eight times.
  • the thread braking device consisted of the two electrically braked deflection rollers 31, 32, with a temperature of 200 ° C. within a thermally insulated housing, which were once wrapped in the filaments. They were braked to a speed of 5'247 m / min. After stretching, the filament was cooled on another godet duo at 120 ° C, which ran as fast as the drafting system. The filament was then wound up at 5,600 m / min.
  • the filament yarn treated in this way had the following properties: titres 1,100 dtex strength 67.2 CN / tex elongation 14.2 % LASE 2% 14.8 CN / tex LASE 5% 34.5 CN / tex Thermal shrink at 160 C. 6.7 %
  • the yarn is particularly suitable for use in Tire cord.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Artificial Filaments (AREA)

Claims (5)

  1. Procédé pour la fabrication de fils industriels par filature à étirage intégré de filaments de polyester filés au fondu à des vitesses de 3000 m/min jusqu'à 6000 m/min, l'étirage étant réalisé à l'aide d'un ensemble délivreur (1) et d'un ensemble d'étirage (2) de sorte que les filaments de polyester (4) sont enroulés et ralentis entre l'ensemble délivreur (1) et l'ensemble étireur (2) , le rouleau (31) et/ou le rouleau (32) ne portant qu'un seul enroulement de filament polyester (4) possède une surface structurée avec une valeur de rugosité dans le domaine de 2.5 à 3.5 micromètres, permet un glissement entre les filaments polyester (4) et la surface des rouleaux (31, 32), le rouleau (31) et/ou le rouleau (32) étant freiné à une vitesse qui répond aux conditions suivantes : v3 = v1 + (v2 - v1) * F, F étant compris dans l'intervalle 0.5 < = F < 1.
  2. Procédé selon la revendication 1, caractérisé en ce que les rouleaux (31, 32) sont chauffés et placés dans un caisson (33) isolé thermiquement.
  3. Procédé selon la revendication 1, caractérisé en ce que les rouleaux (31, 32) sont chauffés à une température de surface comprise entre 150 et 210 °C.
  4. Installation pour la fabrication de fils industriels par filature à étirage intégré de filaments de polyester filés au fondu à des vitesses de 3000 m/min jusqu'à 6000 m/min, l'étirage étant réalisé à l'aide d'un ensemble délivreur (1) et d'un ensemble d'étirage (2), des rouleaux freinés (31, 32) qui possèdent une surface structurée et permettent un glissement entre le filament polyester (4) et la surface des rouleaux étant placés entre l'ensemble délivreur et l'ensemble d'étirage, caractérisée en ce que la valeur de rugosité de la surface des rouleaux (31, 32) se situe dans le domaine de 2.5 à 3.5 micromètres.
  5. Installation selon la revendication 4, caractérisée en ce que le dispositif de freinage du fil (3) est placé dans un caisson isolé thermiquement.
EP97945717A 1996-12-20 1997-12-11 Procede et dispositif de fabrication de fibres industrielles en polyester Expired - Lifetime EP0946799B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH314796 1996-12-20
CH314796 1996-12-20
PCT/CH1997/000463 WO1998028473A1 (fr) 1996-12-20 1997-12-11 Procede et dispositif de fabrication de fibres industrielles en polyester

Publications (2)

Publication Number Publication Date
EP0946799A1 EP0946799A1 (fr) 1999-10-06
EP0946799B1 true EP0946799B1 (fr) 2002-01-30

Family

ID=4249633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97945717A Expired - Lifetime EP0946799B1 (fr) 1996-12-20 1997-12-11 Procede et dispositif de fabrication de fibres industrielles en polyester

Country Status (13)

Country Link
US (1) US6115893A (fr)
EP (1) EP0946799B1 (fr)
JP (1) JP3516690B2 (fr)
KR (1) KR100463355B1 (fr)
CN (1) CN1159477C (fr)
AT (1) ATE212682T1 (fr)
BR (1) BR9713954A (fr)
DE (1) DE59706270D1 (fr)
ES (1) ES2172010T3 (fr)
PL (1) PL185801B1 (fr)
PT (1) PT946799E (fr)
TW (1) TW357202B (fr)
WO (1) WO1998028473A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104109916A (zh) * 2014-07-16 2014-10-22 张家港市华阳针纺织品有限公司 一种罗拉牵伸并条机的牵伸装置
CN109735977B (zh) * 2019-03-13 2023-09-19 安徽新雅新材料有限公司 交变牵伸五通道纺纱装置及变支变比变捻纱线的纺制方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604667A (en) * 1950-08-23 1952-07-29 Du Pont Yarn process
NL124936C (fr) * 1960-01-12
US3790995A (en) * 1970-04-15 1974-02-12 Schweizerische Viscose Apparatus for the preparation of polyethylene terephthalate filaments
US3715421A (en) * 1970-04-15 1973-02-06 Viscose Suisse Soc D Process for the preparation of polyethylene terephthalate filaments
GB1305758A (fr) * 1970-09-03 1973-02-07
DE3026520C2 (de) * 1980-07-12 1985-03-21 Davy McKee AG, 6000 Frankfurt Verfahren zur Herstellung hochfester technischer Garne durch Spinnstrecken
US4610060A (en) * 1984-08-27 1986-09-09 Eastman Kodak Company Drafting system for yarns
DE3840602A1 (de) * 1988-12-02 1990-06-07 Neumuenster Masch App Vorrichtung zum verstrecken von thermoplastischen faeden

Also Published As

Publication number Publication date
PL334017A1 (en) 2000-01-31
CN1238815A (zh) 1999-12-15
BR9713954A (pt) 2000-03-21
PL185801B1 (pl) 2003-07-31
KR20000062249A (ko) 2000-10-25
JP2001512534A (ja) 2001-08-21
EP0946799A1 (fr) 1999-10-06
DE59706270D1 (de) 2002-03-14
JP3516690B2 (ja) 2004-04-05
ATE212682T1 (de) 2002-02-15
US6115893A (en) 2000-09-12
TW357202B (en) 1999-05-01
PT946799E (pt) 2002-07-31
WO1998028473A1 (fr) 1998-07-02
ES2172010T3 (es) 2002-09-16
KR100463355B1 (ko) 2004-12-23
CN1159477C (zh) 2004-07-28

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