AU625777B2 - Method and apparatus for cooling molten filaments in spinning apparatus - Google Patents
Method and apparatus for cooling molten filaments in spinning apparatus Download PDFInfo
- Publication number
- AU625777B2 AU625777B2 AU31608/89A AU3160889A AU625777B2 AU 625777 B2 AU625777 B2 AU 625777B2 AU 31608/89 A AU31608/89 A AU 31608/89A AU 3160889 A AU3160889 A AU 3160889A AU 625777 B2 AU625777 B2 AU 625777B2
- Authority
- AU
- Australia
- Prior art keywords
- cooling
- filaments
- spinning
- cooling air
- stages
- 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.)
- Ceased
Links
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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
-
- 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
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)
Abstract
A method for cooling molten filaments in a spinning apparatus where, a plurality of molten filaments (2) extruded from a die (1) are cooled by cooling air blown out from a cooling apparatus (3) and are taken up with a draft, wherein the temperature and/or volume of the cooling air blown from the cooling apparatus is controlled so that the cooling is performed stronger, in stages or continuously, from upstream to downstream.
Description
M 007Our R 4 he C i#28 T:WB 1miatents Our Ref: #2808 TNB:WB i I i
COMPLETE
FO]
Application Number: Lodged: Complete Specification Lodged: Accepted: Published: Priority: SPECIF T 77 R OFFICE USE Class Int. Class Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: Address of Applicant: Actual Inventors: Address for Service: MITSUI PETROCHEMICAL INDUSTRIES, LTD.
2-5, Kasumigaseki 3-chome, Chiyoda-ku, Tokyo, Japan Eiji Katou, Akifumi Katou and Yoshihiro Yoshimura SMITH SHELSTON BEADLE 207 Riversdale Road Box 410) Hawthorn, Victoria, Australia S Complete Specification for the invention entitled: S METHOD AND APPARATUS FOR COOLING MOLTEN FILAMENTS IN SPINNING APPARATUS The following statement is a full description of this invention, including the best method of performing it known to us: Page 1 Our Ref: #2808 TNB:WB 1. Field of the Invention The present invention relates to a method for cooling a plurality of molten filaments comprised of a thermoplastic resin extruded from dies and to an apparatus for carrying out that method.
2. Description of the Related Art Figure 3 shows a spinning apparatus for ofilaments comprised of polyethylene, polypropylene, or 0o°°o 10 other thermoplastic resins. In this apparatus, a 0o plurality of molten filaments 2 extruded from a die 1 oo *are cooled by cooling air blown from a cooling apparatus oe i 3 and then taken up with a draft. The cooling 0 apparatus 3 comprises a chimney 4 connected to a die 1 in a manner so as to surround the molten filaments 2 and °000 a gas temperature adjustment apparatus 5 composed of coolers. The apparatus 5 cools the cooling air to the 0 desired temperature and the cooling air is fed to the 2 chimney 4 by a fan 6 and is blown from the inner peripheral surface thereof through a filter 7.
Reference numeral 8 is an exhaust fan.
In the cooling of molten filaments, if the 0: temperature of the cooling air is lowered or the air flow rate is increased so as to rapidly cool the filaments, only the surface of the filaments will be cooled and solidified. If a draft is applied to the filaments in that state, the filamentswill melt and break or the elasticity, tensile strength, and other physical properties of the yarn will be lowered.
Conversely, if the filaments are gradually cooled, the filaments tend to adhere to each other and, further, the cooling zone must be made longer, and thus the size of the apparatus is necessarily increased.
i 2
I
a o ooa e e a oaaae e tt aa°e •re: e oe e a a Even if the spinning speed is increased or changed, if the cooling is carried out without changing the length of the cooling zone, a rapid cooling becomes necessary, and thus the problems discussed above will arise.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to obviate the above-mentioned problems, caused by a too rapid or gradual cooling of the filaments.
Other objects and advantages of the present invention will be apparent from the following description.
In accordance with the present invention, there is provided a method of cooling molten filaments in a spinning apparatus, where a plurality of molten filaments extruded from a die are cooled by cooling air blown out from a cooling apparatus said filaments being drafted while cooling, comprising controlling the temperature of the cooling air blown from the cooling apparatus so that the cooling is made stronger, in stages or continuously, from upstream to downstream.
In accordance with the present invention, there is also provided a cooling apparatus in a spinning apparatus where a plurality of molten filaments extruded from a die are cooled by cooling air blown from a cooling apparatus said filaments being drafted while cooling and wherein a plurality of cooling stages with different temperatures of cooling air are connected so that the cooling is performed stronger in the downstream stages.
BRIEF DESCRIPTION OF THE DRAWINGS bc\14\2808.res 92 4 24
'Z
Ii 3opt.
o 4 o Ce o 0, 0 i 0 o 0 C so 0 o The present invention will be better understood from the description set forth below with reference to the accompanying drawings, in which: Figure 1 is a schematic view of a spinning apparatus provided with a cooling apparatus according to a first embodiment of the present invention; Fig. 2 is a schematic view of a spinning apparatus provided with another cooling apparatus; and Fig. 3 is a schematic view of a conventional spinning apparatus.
DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, the abovementioned problems can be solved by controlling the temperature and/or volume of the cooling air so that the cooling is performed stronger, in stages or continuously, from upstream to downstream of the filament flow.
The easiest way to change the cooling in stages and the easiest in terms of control is to divide the cooling 20 zone into several sections, a cooling apparatus is provided for each section, and the cooling by the apparatus is made stronger in the downstream direction.
To change the cooling continuously, it is possible to adopt, for example, a method of arranging a heater in the flow path of the cooling air, and the pitch of the heating wires is made closer in the upstream direction so as to gradually increase the amount of heat generated, whereby the cooling air is warmed by contact with the heater and then blown or a method of forming the flow path of the cooling air is gradually narrowed in the upstream direction or the pressure loss is gradually increased to gradually reduce the amount of air upstream of the filament flow.
Further, when changing the spinning speed is changed, the degree of strength of the cooling can be changed.
Although the temperature and volume of air for pii ill 4 cooling largely depend upon the materials to be extruded, the temperature of the molten filaments, and the extrusion rate, the temperature of the cooling air is preferably -200C to 140 0 C, more preferably 0 to 1000C, and the volume of the cooling air to be brown is preferably 2 to 40 m3/kg, more preferably 5 to 25 m3/kg The materials to be extruded include, for example, polyethylene, polypropylene and other thermoplastic resins.
*0 01o 0 e oe o D ao 0 S o aar 0 0I OR 00 00 0 0000 0O 0 04 I( 0 I S t 4' 4 The molten filaments extruded from the die are cooled weakly at the upstream portion of the cooling zone and strongly at the downstream portion thereof.
When the cooling is weak, the temperature difference of the filament surface and interior is made small and the 15 draft is applied in that state to ensure that, a uniform draft is applied, whereby the elasticity, tensile strength, and other physical properties of the filaments are improved, and melting and breaking occur with difficulty. Further, at the downstream side where the filaments are taken up, a strong cooling is performed for solidification, so adhesion between filaments occurs with_ difficulty. Thus, it is possible to make the cooling zone shorter than with gradual cooling of the whole.
25 If the spinning speed is increased, it is possible to avoid rapid cooling by increasing the ratio of the weak cooling in the cooling zone. Note that when the spinning speed is reduced, there is no problem if the ratios of the strength of the cooling are varied.
Embodiments Figure 1 shows a first embodiment of two-stage cooling apparatus according to the present invention, having the same construction as that of the cooling apparatus 3 provided in the spinning apparatus as shown in Fig. 3, except for the filter at the bottom of the cooling apparatus 3, is comprised of a chimney 12 and a gas temperature adjustment apparatus 13 comprised 5 of coolers. The said apparatus sends the cooling air, cooled to a desired low temperature by the top stage gas temperature adjustment apparatus 13, to the chimney 12 by the fan 14 and connects this to a cooling apparatus 11 so that it is blown out from the inside peripheral surface. It blows out relatively high temperature cooling air from the top stage and relatively low temperature cooling air from the bottom stage thus slowly cooling the molten filaments 2.at the top stage and rapidly cooling them at the bottom stage.
For example, when polyethylene is used, the preferable cooling conditions are as follows: o Top stage: 30°C x 8 m 3 /kg Bottom stage: 10 0 C x 8 m 3 /kg S 15 In the above-mentioned embodiment, the temperature 'pa.
of the cooling air blown out from the bottom stage is QCQ@0* o made lower than that at the top stage, but it is also Sopossible to change the air amounts of the fans 6 and 14 so as to increase the amount of air of the bottom stage a :a 20 over the top stage and further possible to change both the temperature and air amount of the top and bottom B" stages.
A typical example of the cooling condition when polyethlene is used is as follows: Top stage: 20'C x 4 m 3 /kg S, Bottom stage: 10 0 C x 8 m 3 /kg The embodiment shown in Fig. 2 is comprised in the same way as the apparatus shown in Fig. 1 outside of the fact that the fan 6 in the apparatus shown in Fig. 1 is made an exhaust fan and the cooling air of the bottom s cage is exhausted from the fan 16, heated by the heater 17, then blown out from the top stage. As a result, cooling air of a relatively higher temperature is blown out from the top stage and cooling air of a relatively lower temperature is blown out from the bottom stage.
The above-mentioned embodiment shows an example :j C) -6where two cooling apparatuses are connected for twostage cooling, but in another embodiment three or more cooling apparatuses may be connected for multi-stage cooling and in still another embodiment heating wires may be wound around the internal peripheral surface of the chimney and the pitch made gradually closer upstream so as to heat the cooling air and give it a temperature gradient so that the temperature gradually falls downstream, whereby the cooling can be made continuously stronger downstream. Further, in another embodiment, the flow path of the cooling air can be formed to be gradually narrower upstream or formed so that the pressure loss gradually increases, thereby gradually decreasing the amount of the cooling air upstream.
As mentioned above, according to the method of claim 1, the cooling is made performed weaker at the upstream side and stronger at the downstream side, thereby improving the elasticity, tensile strength, and other physical properties of the filaments without enlarging the apparatus and further making molten breakage difficult and preventing mutual adhesion of filaments.
According to the method of claim 2, even if the spinning speed is changed to make it faster, the ratio of the weaker portion of the cooling at the cooling zone can be increased so as to avoid rapid cooling or elongation of the cooling zone.
In the cooling apparatus of claim 3, a plurality of cooling apparatuses are connected so as to strengthen the cooling in stages downstream.
In the cooling apparatus of claim 4, the temperature of the cooling air can be given a temperature gradient descending in the downstream direction and the cooling can be made continuously stronger downstream.
In the cooling apparatus according to claim 5, the volume of the cooling air can be gradually increased -7 downstream and thus the cooling can be made continuously If stronger downstream.
The claims form part of the disclosure of this specification.
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Claims (4)
1. A method of cooling molten filaments in a spinning apparatus, where a plurality of molten filaments extrudes from a die are cooled by cooling air blown out from a cooling apparatus said filaments being drafted while cooling, comprising controlling the temperature of the cooling air blown from the cooling apparatus so that the cooling is made stronger, in stages or continuously, from upstream to downstream.
2. A method of cooling molten filaments as claimed in claim 1, wherein the filaments are spun by the spinning apparatus and the degree of strength of the cooling is echanged by changing the spinning speed of the spinning apparatus. '5
3. A cooling apparatus in a spinning apparatus where a plurality of molten filaments extruded from a die are cooled by cooling air blown from a cooling apparatus filaments being drafted while cooling and wherein a ,o .plurality of cooling stages with different temperatures of cooling air are connected so that the cooling is performed stronger in the downstream stages.
4. A cooling apparatus in a spinning apparatus as claimed in claim 3, wherein there is provided a heater in the flow path of the cooling air with the pitch of the heating wires being made closer upstream so as to gradually increase the amount of heat generated whereby the cooling is made stronger in the downstream stages. A method of cooling filaments substantially as r$ 1 4 bc\14\?80.res 92 4 24 L- U D- -9 hereinbe fore described. DATED this April 24, 1992 CARTER SMITH BEADLE Fellows Institute of Patent Attorneys of Australia Patent Attorneys for the Applicant: MITSUI PETROCHEMICAL INDUSTRIES, LTD. St *0 *540 t AN bc\14\2808.res ~A TE~4 Ir 92 4 24
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-70915 | 1988-03-24 | ||
| JP63070915A JP2674656B2 (en) | 1988-03-24 | 1988-03-24 | Method and apparatus for cooling molten filament in spinning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3160889A AU3160889A (en) | 1989-09-28 |
| AU625777B2 true AU625777B2 (en) | 1992-07-16 |
Family
ID=13445282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU31608/89A Ceased AU625777B2 (en) | 1988-03-24 | 1989-03-22 | Method and apparatus for cooling molten filaments in spinning apparatus |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0334604B2 (en) |
| JP (1) | JP2674656B2 (en) |
| KR (1) | KR960006931B1 (en) |
| CN (1) | CN1022581C (en) |
| AT (1) | ATE97704T1 (en) |
| AU (1) | AU625777B2 (en) |
| CA (1) | CA1325088C (en) |
| DE (1) | DE68910857T3 (en) |
| HK (1) | HK84794A (en) |
| NZ (1) | NZ228457A (en) |
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|---|---|---|---|---|
| DE3941824A1 (en) * | 1989-12-19 | 1991-06-27 | Corovin Gmbh | METHOD AND SPINNING DEVICE FOR PRODUCING MICROFILAMENTS |
| DE29512001U1 (en) * | 1995-07-25 | 1995-10-05 | Ems-Inventa AG, Zürich | Blow wall for cooling melt-spinnable synthetic threads |
| EP0826802B1 (en) * | 1996-08-28 | 2001-11-28 | B a r m a g AG | Process and device for spinning multifilament yarns |
| DE19821778B4 (en) * | 1998-05-14 | 2004-05-06 | Ems-Inventa Ag | Device and method for producing microfilaments of high titer uniformity from thermoplastic polymers |
| WO2000005439A1 (en) * | 1998-07-23 | 2000-02-03 | Barmag Ag | Spinning device and method for spinning a synthetic thread |
| US6444151B1 (en) | 1999-04-15 | 2002-09-03 | E. I. Du Pont De Nemours And Company | Apparatus and process for spinning polymeric filaments |
| JP2002309431A (en) * | 2000-06-21 | 2002-10-23 | Toray Eng Co Ltd | Spinning apparatus |
| JP2002302862A (en) * | 2001-04-06 | 2002-10-18 | Mitsui Chemicals Inc | Method of producing nonwoven fabric and apparatus therefor |
| DE50211394D1 (en) | 2002-02-28 | 2008-01-31 | Reifenhaeuser Gmbh & Co Kg | Plant for the continuous production of a spunbonded web |
| KR101143536B1 (en) | 2002-07-05 | 2012-05-09 | 어플라이드 폴리머 이노베이션즈 엠멘 비.브이. | Spinning method |
| AU2003281697A1 (en) * | 2002-07-26 | 2004-02-16 | Kolon Industries, Inc. | A high strength low shrinkage polyester drawn yarn, and a process of preparing for the same |
| CN1333119C (en) * | 2003-04-11 | 2007-08-22 | 南亚塑胶工业股份有限公司 | Spinning method of fine denier polyester hollow filament |
| WO2006024435A1 (en) * | 2004-08-27 | 2006-03-09 | Diolen Industrial Fibers B.V. | Spinning method and device for carrying out said method |
| JP2007284857A (en) * | 2006-03-22 | 2007-11-01 | Toray Ind Inc | Polyester melt spinning method and melt spinning apparatus |
| JP5256970B2 (en) * | 2008-09-30 | 2013-08-07 | 東レ株式会社 | Melt spinning winding method and melt spinning winding device for cellulose fatty acid mixed ester fiber yarn |
| CN101922056B (en) * | 2009-06-12 | 2012-05-23 | 珠海醋酸纤维有限公司 | Method for adjusting spinning channel air |
| GB2479552B (en) * | 2010-04-14 | 2015-07-08 | Aker Subsea Ltd | Subsea wellhead providing controlled access to a casing annulus |
| DE102010020187A1 (en) * | 2010-05-11 | 2011-11-17 | Oerlikon Textile Gmbh & Co. Kg | Method and apparatus for melt spinning and cooling a variety of synthetic filaments |
| CN101831718B (en) * | 2010-05-24 | 2012-07-04 | 桐乡市中辰化纤有限公司 | Method for preparing super-thick denier polyester monofilament |
| NO334816B1 (en) * | 2011-04-28 | 2014-06-02 | Aker Subsea As | The subsea well assembly |
| CA2837692A1 (en) * | 2011-06-17 | 2012-12-20 | Bp Corporation North America Inc. | Air-freightable containment cap for containing a subsea well |
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| CN102797060B (en) * | 2012-09-03 | 2015-05-13 | 江苏恒力化纤股份有限公司 | Method and device for producing high-grade highway protective guard framework material polyester industrial yarn |
| MY180333A (en) * | 2013-09-26 | 2020-11-28 | Reliance Industries Ltd | System, method and device for quenching synthetic multifilament fibers |
| KR20160001324A (en) | 2014-06-27 | 2016-01-06 | 이상수 | Composition for eye wash and production method thereof |
| CN104153741A (en) * | 2014-08-26 | 2014-11-19 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Control valve system for external casing packer |
| NO342043B1 (en) * | 2015-12-08 | 2018-03-19 | Aker Solutions As | Workover Safety System |
| IT201900023235A1 (en) * | 2019-12-06 | 2021-06-06 | Ramina S R L | PLANT FOR THE PRODUCTION OF NON-WOVEN FABRIC |
| CN111058104A (en) * | 2019-12-31 | 2020-04-24 | 浙江金海环境技术股份有限公司 | Environmental temperature control method, control device, melt-blown nonwoven material production line and preparation system |
| CN111088534A (en) * | 2020-01-17 | 2020-05-01 | 晋江市兴泰无纺制品有限公司 | A fiber drafting refrigeration system |
| CN114592244A (en) * | 2022-02-27 | 2022-06-07 | 浙江坤兴化纤科技有限公司 | Environment-friendly processing technology of high-strength polyester POY |
| CN115182059B (en) * | 2022-06-13 | 2023-11-14 | 桐昆集团浙江恒超化纤有限公司 | Polyester fiber spinning equipment special for high-elastic spring spinning and spinning process |
| CN116732623B (en) * | 2023-06-19 | 2024-02-20 | 桐昆集团浙江恒通化纤有限公司 | Moisture-absorbing sweat-releasing polyester fiber and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3070839A (en) * | 1958-12-24 | 1963-01-01 | Du Pont | Controlled quenching apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU44675A1 (en) * | 1962-11-15 | 1963-12-23 | ||
| JPS539293A (en) * | 1976-07-14 | 1978-01-27 | Ebara Corp | Method and apparatus for regenerating activated carbon |
-
1988
- 1988-03-24 JP JP63070915A patent/JP2674656B2/en not_active Expired - Lifetime
-
1989
- 1989-03-21 EP EP89302795A patent/EP0334604B2/en not_active Expired - Lifetime
- 1989-03-21 AT AT89302795T patent/ATE97704T1/en not_active IP Right Cessation
- 1989-03-21 DE DE68910857T patent/DE68910857T3/en not_active Expired - Fee Related
- 1989-03-22 AU AU31608/89A patent/AU625777B2/en not_active Ceased
- 1989-03-22 NZ NZ228457A patent/NZ228457A/en unknown
- 1989-03-23 CA CA000594757A patent/CA1325088C/en not_active Expired - Fee Related
- 1989-03-23 CN CN89101766A patent/CN1022581C/en not_active Expired - Fee Related
- 1989-03-24 KR KR1019890003689A patent/KR960006931B1/en not_active Expired - Fee Related
-
1994
- 1994-08-18 HK HK84794A patent/HK84794A/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3070839A (en) * | 1958-12-24 | 1963-01-01 | Du Pont | Controlled quenching apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| DE68910857T3 (en) | 1997-04-10 |
| JPH01246408A (en) | 1989-10-02 |
| AU3160889A (en) | 1989-09-28 |
| DE68910857T2 (en) | 1994-03-17 |
| EP0334604A2 (en) | 1989-09-27 |
| CA1325088C (en) | 1993-12-14 |
| CN1022581C (en) | 1993-10-27 |
| EP0334604B2 (en) | 1996-11-27 |
| KR890014793A (en) | 1989-10-25 |
| ATE97704T1 (en) | 1993-12-15 |
| EP0334604A3 (en) | 1990-03-14 |
| HK84794A (en) | 1994-08-26 |
| NZ228457A (en) | 1991-11-26 |
| EP0334604B1 (en) | 1993-11-24 |
| KR960006931B1 (en) | 1996-05-25 |
| CN1038135A (en) | 1989-12-20 |
| JP2674656B2 (en) | 1997-11-12 |
| DE68910857D1 (en) | 1994-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |