CN1448547A - Manufacture of high tenacity low-stretch polyester filaments - Google Patents
Manufacture of high tenacity low-stretch polyester filaments Download PDFInfo
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- CN1448547A CN1448547A CN 03113412 CN03113412A CN1448547A CN 1448547 A CN1448547 A CN 1448547A CN 03113412 CN03113412 CN 03113412 CN 03113412 A CN03113412 A CN 03113412A CN 1448547 A CN1448547 A CN 1448547A
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Abstract
The present invention relates to Dacron producing process, and is especially preparation process of high-strength and low-elongation Dacron filament for sewing thread. The preparation process with routine pre-oriented POY filament includes successive first high-power drafting in the first and the second heating discs, high temperature tensed heat setting in the first heating box and the third heating box, the second drafting and the high temperature relax heat setting in the second heating box. In the process, POY filament has good drafting performance, no teasing and breaking, and the final product has high strength, low elongation and less heat shrinkage.
Description
Technical field
The invention belongs to the terylene production technology, be in particular the preparation method of a kind of sewing thread with high-strength flatness polyester filament.
Background technology
The polyester filament sewing thread with intensity height, ABRASION RESISTANCE go mouldy well, corrosion-resistant, good performance such as non junction and be widely used in various fields such as medium-to-high grade clothes, leather and fur products, medical surgery, military supplies.The high-strength flatness type polyester filament of the general employing of preparation polyester filament sewing thread requires to possess performances such as high strength, low elongation and low thermal shrinkage.
At present, both at home and abroad mainly by adopting following two kinds of technological approaches to manufacture experimently high-strength flatness type polyester filament:
(1) continues to use the production route of polyester industrial yarn.The production method of industry silk mainly contains three kinds: high speed spinning drawing-off one-step method, conventional spinning drawing-off two step method, whole drawing-off method.Adopt conventional spinning drawing-off two step method, can spin the middle high-strength terylene filament of fracture strength greater than 6.0cN/dtex, its main processes is: inherent viscosity is carried out melt spinning greater than 0.85 polyester, add annealing device during spinning below spinning head, spinning speed is between 600～700m/min; The UDY silk (undrawn yarn) that makes adopts the secondary drawing-off, temperature by regulating heat dish, hot plate and one-level, secondary drawing multiplying power proportioning, produce needed in high strength polyester filament yarn.
The raw material of this method is a polyester slice with high viscosity, and inherent viscosity is that the section of 0.62～0.65 routine needs through can using after the solid-phase tack producing operation, and the equipment and the technological process of polymerization stage had higher requirements.And this method spinning speed is low, and production capacity does not increase; Spinning needs to set up annealing device on the journey, prolonged process route, has increased manufacturing cost; The finished silk that makes has lousiness, and package is little, and quality is also good inadequately.
(2) adopt normal polyester section spinning UDY undrawn yarn, carry out low speed spinning, super drawing, spinning speed is between 600～1000m/min.This method makes every effort to form structure as-spun fibre relatively uniformly by the control spinning technique, improves the stretching ratio of later process again, reaches the purpose that increases fibre strength.The stretching ratio increase helps the fibre strength raising, percentage elongation descends and boiling water shrinkage reduces, but too high stretching ratio easily produces lousiness and broken end, and fiber quality will worsen.So the process dependency of this method is very strong, the production run instability, the quality of product and actual production capacity all are very limited.
Summary of the invention
Purpose of the present invention is exactly the preparation method that a kind of high-strength flatness type polyester filament is provided for the above-mentioned defective that solves prior art.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of sewing thread is with the preparation method of high-strength flatness polyester filament, and it is raw material with the pre-oriented yarn, produces through one-level drawing-off, nervous HEAT SETTING, secondary drawing-off, loose HEAT SETTING, cooling, coiling operation process successively.
Purpose of the present invention also can further realize by following technical measures:
Aforesaid a kind of sewing thread is with the preparation method of high-strength flatness polyester filament, and described pre-oriented yarn is that inherent viscosity is the POY silk that 0.62～0.65 normal polyester melt is made under the spinning speed of 2500～3800m/min; This POY silk is in the one-level drafting process, and through the first heat dish, temperature of heat plate is 60～100 ℃ earlier, and through the second heat dish, temperature of heat plate is 100～200 ℃, carries out super drawing again, and stretching ratio is 1.6～2.5; Enter the first hot case then and carry out nervous HEAT SETTING, the first heater temperature scope is controlled at 150～250 ℃; The POY silk of the nervous HEAT SETTING of process enters the 3rd heat dish and carries out the secondary drawing-off, and the 3rd temperature of heat plate is 100～150 ℃, and stretching ratio is 1.1～1.5; The POY silk later through the secondary drawing-off passes through the loose HEAT SETTING of the second hot case again, and second heater temperature is 150～250 ℃, and cools off by cold dish, and the cold dish temperature is a normal temperature, reels after the cooling.
The invention has the advantages that: (1) has saved this technical process of solid-phase tack producing in the raw material section production, directly adopts conventional POY silk, and raw material sources are very extensive; When (2) having solved conventional UDY silk and make high-strength flatness type polyester filament, spinning speed is low, production capacity is low, manufacturing cost is high, fibre strength is low, poor quality, the bad problem of operation; (3) the production equipment requirement is low, the production capacity height, and the added value of product height can reduce cost of investment, increases economic efficiency.The high-strength flatness type long filament that makes with this method has the intensity height, qualities such as elongation at break is low, boiling water shrinkage is low, lousiness little breakage; And production run is more stable.
Purpose of the present invention, advantage and characteristics will illustrate by the non-limitative illustration of following preferential embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
The specific embodiment
As shown in Figure 1, the present invention adopts normal polyester melt (the inherent viscosity scope is 0.62～0.65) the POY silk that spinning obtains under 2500～3800m/min speed, earlier through the first heat dish, temperature of heat plate is 60～100 ℃, again through the second heat dish, temperature of heat plate is 100～200 ℃, carries out super drawing, and stretching ratio is 1.6～2.5; Enter the first hot case afterwards, the first heater temperature scope is controlled at 150～250 ℃, and again through the 3rd heat dish, 100～150 ℃ of the 3rd temperature of heat plate carry out the nervous HEAT SETTING of low power stretching and high temperature, stretching ratio 1.1～1.5; The POY silk later through the secondary drawing-off passes through the loose HEAT SETTING of the second hot case again, and second heater temperature is 150～250 ℃; And cool off by cold dish, the cold dish temperature is a normal temperature, reels after the cooling.Obtain the polyester filament of the low elongation type of high strength at last.Conventional POY silk in the processing of this process route, but have good drawdown, do not have lousiness, broken end substantially, the finished fiber of making has performances such as high strength, low elongation and low thermal shrinkage, fracture strength＞6.0cN/dtex, elongation at break＜15%, boiling water shrinkage＜2.5%.This polyester filament is best in quality, can be applicable to various fields such as sewing thread.
Embodiment one:
Conventional POY silk with 250dtex/48f, carry out the one-level drawing-off for 150 ℃ through 70 ℃ on the first heat dish, the second heat dish, stretching ratio DR1 is 1.85, enter the first hot case and carry out the secondary drawing-off after the 3rd heat is coiled 130 ℃ through 210 ℃ of nervous typings, stretching ratio DR2 is 1.2, enters the second hot case then and reels by cold dish behind 220 ℃ of laxation shapings again, does not have broken end, no lousiness in the production process, coiling and molding is good, and the physical index of gained silk sees Table 1.
Embodiment two:
Conventional POY silk with 165dtex/36f, elongation at break is 130%, fracture strength is 2.1cN/dtex, carry out the one-level drawing-off for 130 ℃ through 60 ℃ on the first heat dish, the second heat dish, stretching ratio DR1 is 1.70, enter the first hot case and carry out the secondary drawing-off after the 3rd heat is coiled 125 ℃ through 200 ℃ of nervous typings, stretching ratio DR2 is 1.15, entering the second hot case then reels by cold dish behind 200 ℃ of laxation shapings again, there are not broken end, no lousiness in the production process, coiling and molding is good, and the physical index of gained silk sees Table 1.
Embodiment three:
With specification is that 277dtex/47f, elongation at break are 131%, fracture strength is the POY silk of 2.3cN/dtex, carries out the one-level drawing-off for 170 ℃ through 90 ℃ on the first heat dish, the second heat dish, and stretching ratio DR1 is 2.0; Enter the first hot case then through 230 ℃ of nervous typings, carry out the secondary drawing-off for 150 ℃ through the 3rd heat dish, stretching ratio DR2 is 1.1; Enter the second hot case at last and reel by cold dish behind 240 ℃ of laxation shapings again, do not have broken end, no lousiness in the production process, coiling and molding is good, and the physical index of gained silk sees Table 1.
The polyester filament performance indications contrast that table 1 the present invention and prior art are made
※
| Sample | Fiber number (dtex) | Fracture strength (cN/dtex) | Elongation at break (%) | Boiling water shrinkage (100 ℃, 30min) | Dry-hot shrinkage (150 ℃, 30min) |
| The contrast sample | ????172 | ????5.75 | ????14.16 | ????3.0 | ????4.4 |
| Embodiment one | ????133 | ????6.26 | ????11.49 | ????2.0 | ????2.2 |
| Embodiment two | ????86 | ????6.30 | ????10.37 | ????1.8 | ????2.0 |
| Embodiment three | ????138 | ????6.10 | ????13.5 | ????2.3 | ????2.4 |
※The polyester filament raw material that the contrast sample adopts for sewing thread producer.
The present invention makes conventional POY silk carry out high drafting by the first heat dish and the second heat dish; Carry out the drawing-off of high temperature low power through the first hot case and the 3rd heat dish again, carry out the nervous HEAT SETTING of high temperature; Make fiber again by the second hot case then, carry out the high temperature relaxation heat setting.But the drawdown of fiber is good in the processing, does not have lousiness and broken end substantially, and final finished fiber has performances such as high strength, low elongation and low thermal shrinkage.Its fracture strength＞6.0cN/dtex, elongation at break＜15%, boiling water shrinkage＜2.5% can be used for producing good polyester filament sewing thread and is applied to various fields.The present invention compares with process route in the past, has obtained following effect:
Adopt the conventional POY silk of common viscosity polyester slice spinning, raw material sources are extensive, are convenient to store and transportation.The POY silk is processed through this process route, but has good drawdown, and the finished fiber quality is good; Production run is stable, does not have lousiness, broken end substantially.It is raw material at the normal polyester of 0.62～0.65 scope that the present invention adopts inherent viscosity, viscosity fluctuation and the required equipment investment of the high sticking section of production of having avoided tackify to cause.The present invention does not need to increase annealing device in spinning process, the spinning speed of employing between 2500m/min～3800m/min, has solved the problems such as speed is low, production capacity is low of spinning of the prior art than higher.
Claims (5)
1, a kind of sewing thread is with the preparation method of high-strength flatness polyester filament, and it is characterized in that: with conventional pre-oriented yarn is raw material, produces through one-level drawing-off, nervous HEAT SETTING, secondary drawing-off, loose HEAT SETTING, cooling, coiling operation process successively.
2, a kind of sewing thread according to claim 1 is characterized in that with the preparation method of high-strength flatness polyester filament: described pre-oriented yarn is that inherent viscosity is 0.62～0.65 normal polyester melt is made 150～300dtex, 24f～48f under the spinning speed of 2500～3800m/min a POY silk; This pre-oriented yarn is in the one-level drafting process, and through the first heat dish, temperature of heat plate is 60～100 ℃ earlier, and through the second heat dish, temperature of heat plate is 100～200 ℃, carries out super drawing again, and stretching ratio is 1.6～2.5; Enter the first hot case then and carry out nervous HEAT SETTING, the first heater temperature scope is controlled at 150～250 ℃; The pre-oriented yarn of the nervous HEAT SETTING of process enters the 3rd heat dish and carries out the secondary drawing-off, and the 3rd temperature of heat plate is 100～150 ℃, and stretching ratio is 1.1～1.5; The pre-oriented yarn later through the secondary drawing-off passes through the loose HEAT SETTING of the second hot case again, and second heater temperature is 150～250 mouthfuls, and cools off by cold dish, and the cold dish temperature is a normal temperature, reels after the cooling.
3, a kind of sewing thread according to claim 2 is with the preparation method of high-strength flatness polyester filament, it is characterized in that: be the POY silk of 250dtex/48f with specification, through excess temperature is that second heat that 70 ℃ the first heat dish and temperature are 150 ℃ is coiled and carried out the one-level drawing-off, and stretching ratio DR1 is 1.85; The first hot case that enters 210 ℃ then carries out nervous HEAT SETTING; Be that 130 ℃ the 3rd heat dish carries out the secondary drawing-off through excess temperature again, stretching ratio DR2 is 1.2; The second hot case that enters temperature at last and be 220 ℃ carries out relaxation heat setting, and by reeling after the cold dish cooling.
4, a kind of sewing thread according to claim 2 is with the preparation method of high-strength flatness polyester filament, it is characterized in that: with specification is that 165dtex/36f, elongation at break are 130%, fracture strength is the POY silk of 2.1cN/dtex, through excess temperature is that second heat that 60 ℃ the first heat dish and temperature are 130 ℃ is coiled and carried out the one-level drawing-off, and stretching ratio DR1 is 1.70; The first hot case that enters 200 ℃ then carries out nervous HEAT SETTING; Be that 125 ℃ the 3rd heat dish carries out the secondary drawing-off through excess temperature again, stretching ratio DR2 is 1.15; The second hot case that enters temperature at last and be 200 ℃ carries out relaxation heat setting, and by reeling after the cold dish cooling.
5, a kind of sewing thread according to claim 2 is with the preparation method of high-strength flatness polyester filament, it is characterized in that: with specification is that 277dtex/47f, elongation at break are 135%, fracture strength is the POY silk of 2.3cN/dtex, through excess temperature is that second heat that 90 ℃ the first heat dish and temperature are 170 ℃ is coiled and carried out the one-level drawing-off, and stretching ratio DR1 is 2.0; The first hot case that enters 230 ℃ then carries out nervous HEAT SETTING; Be that 150 ℃ the 3rd heat dish carries out the secondary drawing-off through excess temperature again, stretching ratio DR2 is 1.1; The second hot case that enters temperature at last and be 240 ℃ carries out relaxation heat setting, and by reeling after the cold dish cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031134122A CN1303266C (en) | 2003-05-08 | 2003-05-08 | Manufacture of high tenacity low-stretch polyester filaments |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031134122A CN1303266C (en) | 2003-05-08 | 2003-05-08 | Manufacture of high tenacity low-stretch polyester filaments |
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| CN1448547A true CN1448547A (en) | 2003-10-15 |
| CN1303266C CN1303266C (en) | 2007-03-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422400C (en) * | 2004-08-10 | 2008-10-01 | 上海太平洋纺织机械成套设备有限公司 | High-strength low-extension polyester staple fiber preparation method |
| CN101086086B (en) * | 2006-06-07 | 2011-06-15 | 中国石化仪征化纤股份有限公司 | Fine denier high intensity low shrinkage polyester filament yarn processing method |
| CN104082915A (en) * | 2014-07-09 | 2014-10-08 | 浙江伟星实业发展股份有限公司 | Arc zipper and manufacturing method thereof |
| CN105177769A (en) * | 2015-10-21 | 2015-12-23 | 东华大学 | High-power drafting flame-retardant post-processing method for high-tenacity polyester in supercritical CO2 |
| CN105442135A (en) * | 2015-12-03 | 2016-03-30 | 温州一可鞋服辅料有限公司 | Processing process for polyester filament yarn low-shrinkage thread |
| CN107815766A (en) * | 2017-09-08 | 2018-03-20 | 桐昆集团股份有限公司 | A kind of production method of slim and graceful chiffon yarn and application |
| CN109750363A (en) * | 2018-12-27 | 2019-05-14 | 江苏恒力化纤股份有限公司 | The preparation method of ultralow shrinkage type polyester industrial fiber |
| CN112869308A (en) * | 2021-01-26 | 2021-06-01 | 福建浔兴拉链科技股份有限公司 | Nylon zipper |
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| JPS57191319A (en) * | 1981-05-13 | 1982-11-25 | Toyobo Co Ltd | Production of thick-and-thin yarn |
| JPS60194115A (en) * | 1984-03-14 | 1985-10-02 | Teijin Ltd | Manufacture of polyester fiber having high heat resistance |
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| DE3720237A1 (en) * | 1987-06-15 | 1989-01-05 | Amann & Soehne | METHOD FOR PRODUCING AIR BLOW TEXTURED SEWING THREAD |
| JPH0525732A (en) * | 1991-07-12 | 1993-02-02 | Kanebo Ltd | Production of uneven denier yarn having part essentially undyeable in dyeing |
| DE59505342D1 (en) * | 1994-01-20 | 1999-04-22 | Hoechst Ag | Two-component loop yarns, process for their production and their use as sewing threads and embroidery threads |
| JPH11181624A (en) * | 1997-12-19 | 1999-07-06 | Toray Ind Inc | Production of polyester fiber and woven or knit fabric |
| JP2002249926A (en) * | 2001-02-26 | 2002-09-06 | Teijin Ltd | Polyester highly shrinkable fiber and method for producing the same |
| CN1310249A (en) * | 2001-03-14 | 2001-08-29 | 中原石油勘探局舒普凡化纤厂 | Production technology of 0.5 dtex superfine polypropylene filament (preoriented yarn-low-elastic yarn) |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422400C (en) * | 2004-08-10 | 2008-10-01 | 上海太平洋纺织机械成套设备有限公司 | High-strength low-extension polyester staple fiber preparation method |
| CN101086086B (en) * | 2006-06-07 | 2011-06-15 | 中国石化仪征化纤股份有限公司 | Fine denier high intensity low shrinkage polyester filament yarn processing method |
| CN104082915A (en) * | 2014-07-09 | 2014-10-08 | 浙江伟星实业发展股份有限公司 | Arc zipper and manufacturing method thereof |
| CN104082915B (en) * | 2014-07-09 | 2016-08-24 | 浙江伟星实业发展股份有限公司 | Arc slide fastener and preparation method thereof |
| CN105177769A (en) * | 2015-10-21 | 2015-12-23 | 东华大学 | High-power drafting flame-retardant post-processing method for high-tenacity polyester in supercritical CO2 |
| CN105442135A (en) * | 2015-12-03 | 2016-03-30 | 温州一可鞋服辅料有限公司 | Processing process for polyester filament yarn low-shrinkage thread |
| CN105442135B (en) * | 2015-12-03 | 2017-10-20 | 温州一可鞋服辅料有限公司 | A kind of processing technology of polyester filament low-shrinkage line |
| CN107815766A (en) * | 2017-09-08 | 2018-03-20 | 桐昆集团股份有限公司 | A kind of production method of slim and graceful chiffon yarn and application |
| CN109750363A (en) * | 2018-12-27 | 2019-05-14 | 江苏恒力化纤股份有限公司 | The preparation method of ultralow shrinkage type polyester industrial fiber |
| CN109750363B (en) * | 2018-12-27 | 2021-01-01 | 江苏恒力化纤股份有限公司 | Preparation method of ultralow-shrinkage polyester industrial yarn |
| CN112869308A (en) * | 2021-01-26 | 2021-06-01 | 福建浔兴拉链科技股份有限公司 | Nylon zipper |
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| CN1303266C (en) | 2007-03-07 |
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Effective date of registration: 20160206 Address after: 211900 Yizheng Changjiang Road, Jiangsu, China, No. 1, No. Patentee after: SINOPEC YIZHENG CHEMICAL FIBRE Co.,Ltd. Address before: Changjiang Road 211800 Jiangsu city of Yizheng province Xupu No. 1 Patentee before: SINOPEC Yizheng Chemical Fibre Co.,Ltd. |
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Granted publication date: 20070307 |