CN104278341A - Production process for fine denier cross-shaped profiled polyester filament yarn - Google Patents
Production process for fine denier cross-shaped profiled polyester filament yarn Download PDFInfo
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- CN104278341A CN104278341A CN201310285445.4A CN201310285445A CN104278341A CN 104278341 A CN104278341 A CN 104278341A CN 201310285445 A CN201310285445 A CN 201310285445A CN 104278341 A CN104278341 A CN 104278341A
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- 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
-
- 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
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- 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
-
- 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
- D01D5/096—Humidity control, or oiling, of filaments, threads or the like, leaving the spinnerettes
-
- 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
- D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
Abstract
The invention discloses a production process for fine denier cross-shaped profiled polyester filament yarn. An FDY one-step method production line is adopted, PET slices are pre-crystallized and dried until the water content of the slices is lower than or equal to 20 ppm, the slices are extruded through a screw extruder in a fusion mode, a spinneret plate with cross-shaped spinneret orifices is adopted for spinning, the spinning temperature is 290-295 DEG C, cross air blasting cooling is carried out on nascent fibers obtained through spinning, air temperature is 26-30 DEG C, air speed is 0.3-0.5 m/s, a slow cooler is added before cross air blasting cooling, and then oil nozzle oiling, stretching setting, meshing and winding are conducted. According to the method, the occurrence frequency of broken ends and broken filaments is reduced, and spinnability is improved while the profile degree is guaranteed; uniformity of thick and thin knobs, production efficiency and product quality are improved, product cost is reduced, labor is saved, and the production difficulty is lowered; preservatives are added into oiling agents, so that the bundling property and the antistatic property of the yarn are improved.
Description
Technical field:
The present invention is specifically related to a kind of production technology of fine-denier cross special-shaped polyester filament yarn.
Technical background:
At present, the experimental branch line total amount of China leaps to No. 1 in the world, but the overwhelming majority is general conventional fibre, and various differentialand functional fiber kind is few, differentiation rate far below developed country, the product that much with high content of technology, added value is high monopolize by foreign country.Product specification is low, and the structural inconsistency that kind is single forces domestic chemical fiber factory to look at the facts in the face, and practices hard internal strength, strives for meeting head on to catch up with and surpass Foreign Advanced Lerel.Therefore, be devoted to products innovation, the various high technology content of Development and Production, high added value and there are the chemical fibre new varieties of broad mass market prospect, become their widespread consensus and core missions.And constantly expand due to recent year production capacity of chemical fibre and scale, polyester conventional variety production capacity surplus, Market competition, product price constantly decline, the performance of enterprises constantly reduces, therefore the fibre in differentiation that developing target market is badly in need of is the only way of improving product competitiveness in the market and improving added value, only develop the fibre in differentiation come in every shape to establish oneself in an unassailable position on domestic and international market increasingly with keen competition, could to winning more client.
Cross profile polyester profiled filament is development in recent years a kind of fibre in differentiation rapidly, this has the gloss as real silk, therefore at garment industry, achieve great success, with the fabric of such fiber weaving, there is soft, the feature such as bulkiness, drapability are good, stain resistance is strong, anti-fuzz balls ability, added value of product is higher, has wide market prospects and good economic benefit.There is a lot of producer at present both at home and abroad in production, production line adopts FDY one-step method, having of POY, DTY two step method, total production technology trend is ripe, but find that this variety production is more difficult in practice, this needs us constantly grope and innovate, and improves constantly production technology, improves product spinnability.
Summary of the invention:
The object of the present invention is to provide a kind of production technology of fine-denier cross special-shaped polyester filament yarn.
Object of the present invention is achieved through the following technical solutions:
A kind of production technology of fine-denier cross special-shaped polyester filament yarn, adopt FDY One-step production route, its production process is: being cut into slices by PET is pre-crystallizedly dried to section moisture content≤20ppm, melt extrude through screw extruder, cross shaped spinneret orifice spinnerets is adopted to carry out spinning, spinning temperature is 290 ~ 295 DEG C, the as-spun fibre lateral blowing cooling that spinning is obtained, wind-warm syndrome is 26 ~ 30 DEG C, wind speed is 0.3 ~ 0.5m/s, before lateral blowing cooling, increase annealer, then oil nozzle oils, set-stretching, adds network and coiling and molding.
Described pre-crystallized temperature is 166 ~ 168 DEG C, and the described pre-crystallized time is 16 ~ 20min, and the temperature of described drying is 169 ~ 171 DEG C, and the time of described drying is 8 ~ 10h.
Described spinning temperature is preferably 290 ~ 292 DEG C.
The oil applying rate that described oil nozzle oils is 2% ~ 3%.
Add preservative agent in the finish that above-mentioned oil nozzle uses when oiling, the mass percentage concentration of described preservative agent in finish is 0.8 ‰ ~ 1 ‰.
Draw ratio during described set-stretching is 1.6 ~ 1.9.
The draw ratio of described cross shaped spinneret orifice is 3.0.
Described screw extruder screw rod each district temperature is: 274 ~ 276 DEG C, a district, 279 ~ 281 DEG C, 2nd district, 285 ~ 287 DEG C, 3rd district, 287 ~ 289 DEG C, 4th district, 289 ~ 291 DEG C, 5th district, 291 ~ 293 DEG C, 6th district.
Solving cross Profile Polyester Fibre requires high to spinning technique in process of production, easily breaks end in production process, produces lousiness, the problems such as spinnability is low, and degree of profile is on the low side.First be control the drying effect of cutting into slices well, guarantee that section moisture content is no more than 20ppm, the quality of chip drying effect, directly have influence on the spinnability of shaped filaments.A rational spinning temperature and lateral blowing wind speed and wind-warm syndrome is found out by constantly putting into practice under the prerequisite improving spinnability.Because cross shaped filaments cross section is special, poor to finish adsorptivity, suitably should improve the oil content of tow, improve the position that oils, regulate spinning tension in a rational region, optimize draft process, improve dyeability, and this series of studies is applied in the Development and Production of other specification shaped filaments.Oil position compare conventional silk improve 8 ± 2cm, spinning tension is 16 ~ 20CN, draft process parameter: draw ratio 1.8, spinneret draft ratio: 80 ~ 100.
The production of shaped filaments to the uniform drying of section and water content requirement all high than conventional fibre, need to strengthen drying condition, and spinning temperature is higher than conventional fibre.The many employings of spinnerets nearly cross pore spinnerets, cooling quench all adopts lateral blowing mode mostly, before lateral blowing cooling, increase annealer, adopts slow cooling to combine process for cooling cold by force.Adopt containing the finish of preservative agent, and improve the position that boundling oils.
Select the section of high-quality, hold raw material and close, drying is guaranteed pre-crystallized abundant with drying, increase the pre-crystallized time, suitably reduce crystallization and baking temperature.Adopt advanced freeze drier, guarantee that drying condition reaches technological requirement.Adopt be provided with zone of silence, annealer slow cooling in conjunction with the process for cooling of strong cold side blowing device, provide a good cooler environment.Employing oil nozzle oils, and improves the position that oils, and reduces spinning tension, preservative agent is added in finish, improve the convergence of silk and antistatic behaviour, preservative agent is the problem such as can solve the rotten fermentation of the product caused because of bacteriological infection, mouldy and bacterial population exceeds standard, and extends finish useful life.And adopt FDY one-step method to produce, improve production efficiency.
Raw material involved in technical solution of the present invention unless otherwise indicated, is all bought by market and is obtained.
Beneficial effect of the present invention:
Method provided by the invention decreases the appearance of broken end, lousiness, while guaranteeing degree of profile, improve spinnability.Improve thickness joint uniformity, enhance productivity, improve the quality of products, reduce product cost, save labour, reduce production difficulty.In finish, add preservative agent, improve convergence and the antistatic behaviour of silk.Break end in conventional production process occurrence rate 15% ~ 18%, uses production technology lousiness of the present invention, end breakage rate is 5% ~ 8%.
Detailed description of the invention:
Production equipment and instrument: German BM formula drying machine, twin (double) screw extruder, German Ba Mage spinning, stretching, up-coiler, cross-hole spinnerets (L/R is 3.0).
Raw material: PET cuts into slices (Sinopec Yizheng Fiber Optical plant SB500), finish: F-1048, preservative agent (Japan, bamboo originally)
Embodiment 1: adopt One-step production fine-denier cross special-shaped polyester filament yarn
Adopt FDY One-step production route: by PET section at 168 DEG C of pre-crystallized 18min, section moisture content≤20ppm is dried at 170 DEG C of drying 8 ~ 10h, melt extrude through screw extruder, screw rod each district temperature is: 275 DEG C, a district, 280 DEG C, 2nd district, 286 DEG C, 3rd district, 288 DEG C, 4th district, 290 DEG C, 5th district, 292 DEG C, 6th district.The spinnerets of cross shaped spinneret orifice is adopted to carry out spinning, spinning temperature is 292 DEG C, the as-spun fibre lateral blowing cooling that spinning is obtained, wind-warm syndrome is 28 DEG C, wind speed is 0.4m/s, before lateral blowing cooling, increase annealer, then oil nozzle oils, set-stretching, adds network and coiling and molding, and winding speed is 4300m/min.
The oil applying rate that described oil nozzle oils is 2.8%.Add preservative agent in the finish that described oil nozzle uses when oiling, the mass percentage concentration of described preservative agent in finish is 0.9 ‰.Draw ratio during described set-stretching is 1.8.The draw ratio (L/R) of described cross shaped spinneret orifice is 3.0.Oil position compare conventional silk improve 8 ± 2cm, spinning tension is 18CN, spinneret draft ratio: 90.
The detailed technological process of production is: → packaging warehouse-in sentenced look → physical index and detect by section → pulse conveying → pre-crystallized → drying → screw extruder → prefilter → measuring pump → filament spinning component → cooling forming → oil → first hot-rolling → the second hot-rolling → winding shaping → knit socks
The quality of PET section moisture content to spinning process and finished silk has a strong impact on, so the drying control of section requires high than conventional fibre, section generation thermal degradation, hydrolysis can not be made in dry run, section can not be made again at high temperature to occur solid phase polycondensation and increase glutinous, prevent the large degree of profile affecting strand of slicing characteristics viscosity fluctuation.Therefore drying process temperature will control lower, and the time is longer.Actual process controls pre-crystallization temperature and most preferably is 168 DEG C, and baking temperature most preferably is 170 DEG C, and drying time, 8 ~ 10h, made section moisture content be no more than 20ppm.Add the drying time of section, suitably reduce crystallization and baking temperature, make dry section moisture content meet explained hereafter requirement.
Suitable raising spinning temperature, is conducive to improving the mobile performance of melt, improves spinnability, but unsuitable too high, controls at 292 DEG C more satisfactory, makes that broken end is relative with the generation of lousiness to be reduced while taking into account degree of profile.
Improve section drying process, make chip drying abundant, reduce moisture content.Select suitable spinning temperature, while guaranteeing degree of profile, improve spinnability.Have employed the spinnerets of nearly cruciform vent, design rational draw ratio L/R, increase the degree of profile of shaped filaments.Adopt slow cooling in conjunction with the process for cooling of strong cold blowing during cooling, reduce wind-warm syndrome, improve wind speed, strong cold blowing adopts lateral blowing mode, and under the prerequisite improving spinnability, determine lateral blowing wind speed and wind-warm syndrome, wind-warm syndrome is 28 DEG C, and wind speed is 0.4m/s.And use with FDY One-step production route, guaranteeing in the product situation producing excellent quality, reducing the appearance of broken end, lousiness, reducing production cost.
Because cross special-shaped polyester filament yarn specific area is greater than circular wire, poor to finish adsorptivity, suitably should improve the oil content of tow, but can not be too high, fiber can be made easily to skid when aft-loaded airfoil, and roller of having mercy on during spinning is serious, find the oil applying rate that suitable, oil evenly, actual strand oil applying rate controls 2% ~ 3% optimum, and the present embodiment oil applying rate is 2.8%.The selection of draw ratio is very larger than impact on the thickness of fiber, and will select suitable draw ratio and coiling temperature when reeling, draw ratio during set-stretching is 1.8.
Increase the time of staying of section in pre-crystallized, crystallization air quantity strengthens, and crystallization temperature suitably reduces, and section moisture control is at≤20PPM.Suitable raising spinning temperature, improves the rheological property of melt, but unsuitable too high, controls at about 292 DEG C, makes that broken end is relative with the generation of lousiness to be reduced while taking into account degree of profile.Relax cooling, shaped filaments surface is cooled evenly everywhere.Adopt lower spinning speed, stablize to keep degree of profile.
Suitably slow down cooling condition, ensure that every rhizoid surface cool is even; Improve boundling to oil position, can spinning tension be reduced.Select rational drawing temperature (90 DEG C) and draw ratio, develop the shaped filaments that degree of profile is desirable.Adopt One-step production circuit, enhance productivity, save labour.
The processing parameter of table 1 fine-denier cross special-shaped polyester filament yarn
| Project name | Technical indicator | Project name | Technical indicator |
| Pre-crystallization temperature/DEG C | 168 | Oil applying rate/% | 2.8 |
| Pre-crystallized time/min | 18 | GR 1Speed/m.min -1 | 2300 |
| Baking temperature/DEG C | 170 | GR 1Temperature/DEG C | 90 |
| Drying time/h | 8~10 | GR 2Temperature/DEG C | 158 |
| Pressure/MPa after filter | 11 | Draw ratio | 1.8 |
| Assembly initial pressure/MPa | 13 | Drawing temperature/DEG C | 90 |
| Biphenyl temperature/DEG C | 292 | Over feed rate(OFR)/% | 2.5 |
| Lateral blowing wind-warm syndrome/DEG C | 0.4 | Winding angle/° | 5.6 |
| Lateral blowing wind speed/m.s -1 | 28 | Winding speed/m.min -1 | 4300 |
| Lateral blowing rheumatism/% | 65±5 |
The physical index of the fine-denier cross special-shaped polyester filament yarn that table 2 is produced
| Project name | Measured value |
| Line density/dtex | 43.5dtex |
| Extension at break/% | 71 |
| Boiling water shrinkage/% | 22% |
| Oil content/% | 2.8 |
| Dyeing all with spend | 4 |
Production technology of the present invention is being guaranteed in the product situation producing excellent quality, reduces the appearance of broken end, lousiness, and reduce production cost, improve production efficiency, production process is more stable.The broken end occurrence rate of existing production technology is 15%, and the inventive method lousiness, end breakage rate are 6%.
Claims (8)
1. the production technology of a fine-denier cross special-shaped polyester filament yarn, adopt FDY One-step production route, it is characterized in that its production process is: being cut into slices by PET is pre-crystallizedly dried to section moisture content≤20ppm, melt extrude through screw extruder, cross shaped spinneret orifice spinnerets is adopted to carry out spinning, spinning temperature is 290 ~ 295 DEG C, the as-spun fibre lateral blowing cooling that spinning is obtained, wind-warm syndrome is 26 ~ 30 DEG C, wind speed is 0.3 ~ 0.5m/s, before lateral blowing cooling, increase annealer, then oil nozzle oils, set-stretching, adds network and coiling and molding.
2. production technology according to claim 1, it is characterized in that described pre-crystallized temperature is 166 ~ 168 DEG C, the described pre-crystallized time is 16 ~ 20min, and the temperature of described drying is 169 ~ 171 DEG C, and the time of described drying is 8 ~ 10h.
3. production technology according to claim 1, is characterized in that described spinning temperature is 290 ~ 292 DEG C.
4. production technology according to claim 1, is characterized in that the oil applying rate that described oil nozzle oils is 2% ~ 3%.
5. the production technology according to claim 1 or 4, it is characterized in that adding preservative agent in the finish that described oil nozzle uses when oiling, the mass percentage concentration of described preservative agent in finish is 0.8 ‰ ~ 1 ‰.
6. production technology according to claim 1, draw ratio when it is characterized in that described set-stretching is 1.6 ~ 1.9.
7. production technology according to claim 1, is characterized in that the draw ratio of described cross shaped spinneret orifice is 3.0.
8. production technology according to claim 1, is characterized in that described screw extruder screw rod each district temperature is: 274 ~ 276 DEG C, a district, 279 ~ 281 DEG C, 2nd district, 285 ~ 287 DEG C, 3rd district, 287 ~ 289 DEG C, 4th district, 289 ~ 291 DEG C, 5th district, 291 ~ 293 DEG C, 6th district.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475788A (en) * | 2017-08-30 | 2017-12-15 | 南通市华通纤维有限公司 | A kind of production technology of moisture-absorption and perspiration polyester filament |
| CN108130644A (en) * | 2018-01-18 | 2018-06-08 | 海宁市御纺织造有限责任公司 | A kind of production method of composite filament |
| CN108588867A (en) * | 2018-05-11 | 2018-09-28 | 常熟涤纶有限公司 | A kind of preparation process of dacron ultrafine fiber |
| CN109183164A (en) * | 2018-10-19 | 2019-01-11 | 常熟涤纶有限公司 | A kind of preparation process of dacron fine-denier high-intensity fiber |
| CN109440205A (en) * | 2018-10-19 | 2019-03-08 | 常熟涤纶有限公司 | A kind of preparation process of high-strength polyester fine denier profiled silk |
| CN113174646A (en) * | 2021-04-25 | 2021-07-27 | 杭州永兴化纤有限公司 | Process for super cotton-like polyester |
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| CN102586939A (en) * | 2012-03-06 | 2012-07-18 | 江苏天地化纤有限公司 | Profiled fire-retardant bright terylene FDY (Fully Drawn Yarn) filament and production process thereof |
| CN102704018A (en) * | 2012-06-28 | 2012-10-03 | 宁波华星轮胎有限公司 | Processing process of lustrous trilobal profiled polyester pre-oriented color yarn |
| CN103114346A (en) * | 2013-02-25 | 2013-05-22 | 江苏中润纤维科技股份有限公司 | Colored polyester filament yarn with diamond blinking effect and method for manufacturing colored polyester filament yarn |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5634914A (en) * | 1987-07-30 | 1997-06-03 | Courtaulds Plc | Cellulosic fibre |
| US20100180563A1 (en) * | 2007-01-23 | 2010-07-22 | Reliance Industries Limited | Easily alkali soluble polyester and method for producing the same |
| CN102586939A (en) * | 2012-03-06 | 2012-07-18 | 江苏天地化纤有限公司 | Profiled fire-retardant bright terylene FDY (Fully Drawn Yarn) filament and production process thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475788A (en) * | 2017-08-30 | 2017-12-15 | 南通市华通纤维有限公司 | A kind of production technology of moisture-absorption and perspiration polyester filament |
| CN108130644A (en) * | 2018-01-18 | 2018-06-08 | 海宁市御纺织造有限责任公司 | A kind of production method of composite filament |
| CN108588867A (en) * | 2018-05-11 | 2018-09-28 | 常熟涤纶有限公司 | A kind of preparation process of dacron ultrafine fiber |
| CN109183164A (en) * | 2018-10-19 | 2019-01-11 | 常熟涤纶有限公司 | A kind of preparation process of dacron fine-denier high-intensity fiber |
| CN109440205A (en) * | 2018-10-19 | 2019-03-08 | 常熟涤纶有限公司 | A kind of preparation process of high-strength polyester fine denier profiled silk |
| CN113174646A (en) * | 2021-04-25 | 2021-07-27 | 杭州永兴化纤有限公司 | Process for super cotton-like polyester |
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Application publication date: 20150114 |