CN102828278A - Polyester fully-drawn slub yarn and preparation method thereof - Google Patents
Polyester fully-drawn slub yarn and preparation method thereof Download PDFInfo
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- CN102828278A CN102828278A CN2012103514031A CN201210351403A CN102828278A CN 102828278 A CN102828278 A CN 102828278A CN 2012103514031 A CN2012103514031 A CN 2012103514031A CN 201210351403 A CN201210351403 A CN 201210351403A CN 102828278 A CN102828278 A CN 102828278A
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Abstract
The invention discloses a polyester fully-drawn slub yarn and a preparation method thereof. On the basis of not changing the conventional FDY (fully-drawn yarn) production device, the polyester fully-drawn slub yarn is produced by using a one-step method implemented through adding a polymethyl methacrylate additive (mass percentage: 0.5-3.0%) into a polyester chip and then carrying out drawing on an obtained mixture at a drawing speed of 4600-5000m/min. The radial fineness ratio of the obtained slub yarn is 1.20-1.60/l, the length of a thick section of the slub yarn is 15-40mm, and the slub density is 5-15/m; and the breaking strength is 2.70-3.40 cN/dtex, and the breaking elongation is 40-80%. The polyester fully-drawn slub yarn prepared by using the technical scheme of the invention has the characteristics of high output, low cost, good quality, stable performance, high added values of products, and obvious price-performance advantages, and achieves the purposes of energy conservation, emission reduction, environmental protection, clean production and benefit incensement.
Description
Technical field
The invention belongs to function fibre in differentiation technical field, particularly relate to a kind of polyester (FDY) slub yarn and preparation method thereof that stretches entirely.
Background technology
The polyester thickness slub yarn that stretches entirely is a kind ofly to have the new function fibre in differentiation of line density thickness than difference and other potential characteristic along the fiber axis direction; Wherein, Ceiling for accumulation density is called the thickness ratio with the ratio of minimum rate of accumulation density in the fiber; And the thickness ratio is of moderate size, and the thickness joint is evenly distributed or random distribution; The characteristic of slub yarn is that same fiber has at fiber axis to the supramolecular structure that different orientation degree and degree of crystallinity are arranged, and the slubbing degree of orientation and degree of crystallinity are low usually, and the details degree of orientation and degree of crystallinity are high.Thereby under identical dyeing condition, same fiber dye uptake produces the alternate effect of shade with thickness ring and position thereof and different, is design of scattered small flowers and plants or snowflake tone fabric, the particularly raw material of imitative numb simulate wool like staple fiber yam style fabric.
At present; The slub yarn preparation can be through mechanically changing the method manufacturing that draw ratio perhaps adopts the speed difference spinning that spues; But more uneven pulling through employing reduction spinning speed and reduction draw ratio perhaps adopts POY technology to arrive the deformation processing of DTY technology two step method, or adopts the preparation method of compound slub yarn, covering property slub yarn to obtain the thickness slub yarn.The size and the changes in distribution that prepare the thickness ratio of slub yarn in this way fluctuate greatly, are difficult to control, and the depth contrast that causes dyeing is too big; Its slubbing degree of orientation is low excessively, after false twisting, dyeing and finishing or alkali decrement, is prone to embrittlement during processed, produces lousiness and broken end; The thickness joint is irregular, is prone to cause slubbing distribution concentrations, and concave-convex sense is not strong, and gas permeability is poor, and feeling of oppression and heat is arranged; Secondly, complex process, long flow path, unstable product quality influences Fabric Style and quality thereof, is difficult to make ultra imitative fiber crops, simulate wool style and effect, finally influences product quality and Fabric Style and market development prospect.Therefore, obtain thickness joint ratio size and distribution thereof preferably, must under the stretching condition of utmost point close limit, stretch, but difficult grasp on the technology; Simultaneously, thickness reduces than increasing with winding speed, but because present above-mentioned preparation method's winding speed is too low, cause yield poorly, cost is high, unstable product quality.
Chinese invention patent CN101328620 discloses a kind of preparation method of sparkling bamboo joint polyester filament; Produce triangle pre-oriented yarn (POY) by spinning through the spinnerets transformation; Make silk have the characteristics of flash of light; In the back process of POY, adopt 1.4～1.46 less draw ratios to reach higher relatively setting temperature, processing obtains DTY sparkling bamboo joint polyester filament.This product ring is the rubber-like elastic filament by follow-up DTY technology gained, can cause the glossiness variation, and the style of silk changes, and the ring effect is obvious inadequately, and adopts two step method production, and complex process is with high costs.
Chinese invention patent CN101748502 B. disclosed FDY terylene slub long filament and preparation method; Adopt FDY technology; Draw speed 2800～3200m/min, the preparatory network pressure 0.22MPa that stretches, draw ratio 1.9～2.22; Hot-rolling speed GR1/GR2 is respectively 1400～1600m/min and 2800～3200m/min, and heat roller temperature GR1/GR2 is respectively 65～75 ℃ and 108～118 ℃.Though this technology is one-step method production, help reducing production costs, its spinning speed is merely about 3000m/min, and speed is low, yields poorly, and cost is high, and therefore, production technology is needed improvement badly.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, utilize existing FDY device resource, melt spinning stretches and adopts one-step technology; Provide a kind of spinning speed fast, production cost is low, and output is high; The thickness of fiber is than big and even; Has Yi Shangran, lovely luster, high added value and the high-quality polyester slub yarn and preparation method thereof that stretches entirely.
The technical scheme that realizes the object of the invention provides a kind of polyester slub yarn that stretches entirely, and specification is 76dtex/24f～110dtex/72f, and slubbing is alternate random distribution in the fibre length direction; It comprises that mass fraction is 0.5～3.0% polymethylmethacrylaadditive additive, and its fracture strength is 2.70 cN/dtex～3.40cN/dtex, and elongation at break is 40%～80%.
The thickness ratio of slub yarn is 1.20～1.60:1, and the slubbing length of slub yarn is 15～40mm, and ring density is 5～15/m.
The stretch full preparation method of slub yarn of a kind of aforesaid polyester adopts one-step method production process, and its condition is following:
1, in polyester slice, adding mass fraction is 0.5～3.0% polymethylmethacrylaadditive additive;
2, section is adopted 6 grades of screw rod melt extrusion processes with after additive fully mixes in screw rod, and the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃;
3, melt adopts ring blowing process for cooling solidify out into strand after spinnerets is extruded as the melt thread; The process conditions of ring blowing are: 21 ± 2 ℃ of wind-warm syndrome, blast 40～50Pa, humidity 70 ± 5%;
4, oil tow behind the boundling of nozzle is to carry out preparatory network under the condition of 0.7 ± 0.05 bar at pressure, again through first hot-rolling, and speed 1750～1850m/min, 80～90 ℃ of temperature; Second hot-rolling, 120～130 ℃ of temperature;
5, the draw speed with 4600m/min～5000m/min carries out coiling and molding, the polyester of processing specification and the be 76dtex/24f～110dtex/72f slub yarn spinning cake that stretches entirely.
The inherent viscosity of said polyester slice is 0.648dl/g.
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention has selected a kind of efficient, polymeric additive at a low price, adopts and reasonably adds speed and optimum addition 0.5%～3.0%, through adjustment additive addition and relevant manufacturing condition thereof; Adjust and control polyester effectively and stretch entirely in the thickness slub yarn; Thickness is than big, and ring is obvious, ring even thickness and alternate random distribution; And slubbing keeps higher potential characteristics such as the degree of orientation, guarantees ordinary production and product quality.Because the interpolation of additive mainly is to accomplish in the spinning stage, there is not waste material to discharge, can reach the purpose of cleaner production.
2, under the situation of not changing existing equipment; Be utilized in existing FDY device resource; Through in melt spinning stretching one-step method process, add polymethylmethacrylaadditive additive and choose reasonable spinning temperature, cooling quench condition of cure, boundling position and winding speed oil; Prepare the stretch full method of (FDY) thickness slub yarn product of polyester, product quality and added value are improved.
3, through in melt spinning stretching one-step method process, adding polymethylmethacrylaadditive additive; Guarantee with the 4600～5000m/min draw speed spinning polyester thickness slub yarn that stretches entirely; (2800～3200m/min) improve 50～60% than the draw speed that adopts the prior art for preparation method at present; And improve output and quality, and production cost significantly reduces, and the product profit rate improves bigger.
4, the water power of the product consumption of same output significantly reduces, and energy-conservation reduction of discharging simultaneously is significant to environmental protection; The present invention have spinning speed height, technology simple, produce and be easy to control, and characteristics such as cost is low, quality is good, added value height, cost is than about 50% of about 70% or the POY-DTY two step method that adopt the prior art one-step method at present.
5, the polyester for preparing of the present invention (FDY) thickness slub yarn that stretches entirely has Yi Shangran; Bright in colour; Dyestuff consumption reduces; Potential characteristic functions such as high-color rendering ability, its fabric manufactured goods have ultra imitative fiber crops, simulate wool stylistic effects such as moisture absorption is ventilative, feel is dry and comfortable, sense of touch is plentiful, drapability is good, snugness of fit is good.
Description of drawings
Fig. 1 is the one-step method polyester that adopts the embodiment of the invention the to provide product design sketch of slub yarn after weaving cotton cloth, dyeing that stretch entirely.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is done further to set forth.
Embodiment 1
The spinning technique flow process of present embodiment is: polyester slice is dry → and will do section and additive and add screw rod fusion → spinning manifold → measuring pump → filament spinning component → melt and extrudes → cooling forming → oil → drawing-off → HEAT SETTING → coiling and molding → make polyester thickness slub yarn that stretches entirely.In the spinning equipment; Adopt polyester slice melt spinning mode; It comprises drying, screw rod melt extruded device based on the FDY equipment of producing conventional variety, and the additive injector is installed on the charging aperture of screw rod melt extruded device; Spinning manifold, measuring pump, filament spinning component, spinnerets device for spinning, installing ring cold wind blower below spinnerets; Coiling and forming device comprises first, second drawing roller, preparatory Network device and up-coiler, and the preparatory Network device in described two roads places the centre of first drawing roller and second drawing roller, and 4600m/min～5000m/min coiler device.
Present embodiment provides a kind of 76dtex/24f polyester slub yarn preparation method that stretches entirely.FDY spinning technique working process parameter and performance indications are in the production technology: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive is 0.5% of a polyester raw material mass fraction in melt spinning; Section is with after additive fully mixes in screw rod; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 40Pa, 21 ℃ of ring blowing temperature; The tow that humidity 70 ± 5%, nozzle oil behind the boundling is that the first hot-rolling speed was 1750m/min after the preparatory Network device of 0.7 ± 0.05 bar carried out preparatory network through pressure; 80 ℃ of first heat roller temperatures; 120 ℃ of second heat roller temperatures, draw speed 4600m/min, the polyester of processing specification and the be 76dtex/24f thickness slub yarn spinning cake that stretches entirely.Spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1, the slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The fracture strength of thickness slub yarn is 3.10cN/dtex, and elongation at break is 41%.
Referring to accompanying drawing 1, it is that the one-step method that adopts present embodiment to provide prepares the polyester product design sketch of fiber after weaving, dyeing that slub yarn technology obtains that stretch entirely.
Can be found out that by Fig. 1 in the fabric, the fiber linear density thickness is bigger than difference, ring is obvious, and the ring even thickness is alternate random distribution.
Adopt and add polymethylmethacrylaadditive additive; The crystallization of undrafting wire and the natural draw ratio of degree of orientation and fiber in adjustment rationally and the control spinning technique process; Possess slubbing and still can keep the higher degree of orientation and add after avoiding embrittlement takes place man-hour, produce the stretch full preparation method of thickness slub yarn of polyester.The invention solves prior art spinning polyester and stretch thickness slub yarn thickness entirely than big or big, an intensity is on the low side, and spinning speed is low, yield poorly the cost height; Complex process, long flow path is difficult to control; Quality is unstable, and the product concave-convex sense is not strong, and gas permeability is poor; Feeling of oppression and heat is arranged, and unstable product quality is difficult to make defectives such as imitative fiber crops, simulate wool style.
Because the poor △ n between the fiber thickness joint differs bigger, depth contrast is big during dyeing, helps forming dyeing difference, and the ring effect is obvious, possesses Yi Shangran, lovely luster, and dyestuff consumption reduces, potential characteristics such as high-color rendering ability.Superelevation simulative fiber style and effects such as it makes ultra imitative fiber crops, wool-like fabric manufactured goods have dry and comfortable feel type, the plentiful softness of sense of touch, painted strong, moisture-absorbing moisture-keeping, good permeability, drapability is good, snugness of fit is good, so can be widely used in middle and high-end market consumer fields such as garment material, bedding, adornment.
The described polyester of the present embodiment slub yarn that stretches entirely, its cross section can comprise circle and abnormity.
Embodiment 2
Present embodiment provides a kind of 110dtex/36f one-step method polyester thickness slub yarn preparation method that stretches entirely.Processing parameter and performance indications are: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive is 1.1% of a polyester raw material mass fraction in melt spinning; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 40Pa, 21 ℃ of ring blowing temperature; The first hot-rolling speed is 1750m/min, 82 ℃ of first heat roller temperatures, 123 ℃ of second heat roller temperatures; Draw speed 4700m/min, spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1; The slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The fracture strength of thickness slub yarn is 3.05cN/dtex, and elongation at break is 43%.
Embodiment 3
Present embodiment provides a kind of 110dtex/36f one-step method polyester thickness slub yarn preparation method that stretches entirely.Processing parameter and performance indications are: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive/additive is 1.5% of a polyester raw material mass fraction in melt spinning; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 50Pa, 21 ℃ of ring blowing temperature; The first hot-rolling speed is 1800m/min, 84 ℃ of first heat roller temperatures, 129 ℃ of second heat roller temperatures; Draw speed 4800m/min, spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1; The slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The fracture strength of thickness slub yarn is 3.05cN/dtex, and elongation at break is 45%.
Embodiment 4
Present embodiment provides a kind of 110dt/72f one-step method polyester thickness slub yarn preparation method that stretches entirely.Processing parameter and performance indications are: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive is 2.0% of a polyester raw material mass fraction in melt spinning; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 50Pa, 21 ℃ of ring blowing temperature; The first hot-rolling speed is 1850m/min, 84 ℃ of first heat roller temperatures, 129 ℃ of second heat roller temperatures; Draw speed 4850m/min, spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1; The slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The stretch full fracture strength of thickness ring of polyester is 2.98cN/dtex, and elongation at break is 43%.
Embodiment 5
Present embodiment provides a kind of 110dtex/36f one-step method polyester thickness slub yarn preparation method that stretches entirely.Processing parameter and performance indications are: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive/additive is 2.5% of a polyester raw material mass fraction in melt spinning; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 50Pa, 21 ℃ of ring blowing temperature; The first hot-rolling speed is 1850m/min, 86 ℃ of first heat roller temperatures, 129 ℃ of second heat roller temperatures; Draw speed 5000m/min, spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1; The slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The fracture strength of thickness slub yarn is 2.95cN/dtex, and elongation at break is 46%.
Embodiment 6
Present embodiment provides a kind of 110dtex/36f one-step method polyester thickness slub yarn preparation method that stretches entirely.Processing parameter and performance indications are: the polyester slice inherent viscosity is 0.648dl/g; The addition of online interpolation polymethylmethacrylaadditive additive/additive is 3.0% of a polyester raw material mass fraction in melt spinning; Adopt 6 grades of screw rod melt extrusion processes, the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃; 290 ℃ of spinning temperatures, ring blowing blast is 50Pa, 21 ℃ of ring blowing temperature; The first hot-rolling speed is 1850m/min, 86 ℃ of first heat roller temperatures, 129 ℃ of second heat roller temperatures; Draw speed 5000m/min, spin and obtain the polyester thickness slub yarn that stretches entirely and be the thickness ring evenly and alternate random at the fiber axis length direction, radially the thickness ratio is 1.20/1～1.60/1; The slubbing length 15～40mm of slub yarn, 5～15/m of ring density; The fracture strength of thickness slub yarn is 2.75cN/dtex, and elongation at break is 56%.
Claims (4)
1. polyester slub yarn that stretches entirely; Specification is 76dtex/24f～110dtex/72f; Slubbing is alternate random distribution in the fibre length direction; It is characterized in that: it comprises that mass fraction is 0.5～3.0% polymethylmethacrylaadditive additive, and its fracture strength is 2.70 cN/dtex～3.40cN/dtex, and elongation at break is 40%～80%.
2. a kind of polyester according to claim 1 slub yarn that stretches entirely, it is characterized in that: the thickness ratio of slub yarn is 1.20～1.60:1, and the slubbing length of slub yarn is 15～40mm, and ring density is 5～15/m.
3. the said polyester of claim 1 preparation method of slub yarn that stretches entirely is characterized in that adopting one-step method production process, and its condition is following:
(1) in polyester slice, adding mass fraction is 0.5～3.0% polymethylmethacrylaadditive additive;
(2) section is adopted 6 grades of screw rod melt extrusion processes with after additive fully mixes in screw rod, and the temperature of 6 grades of screw rods is respectively 281 ± 2 ℃, 287 ± 2 ℃, 290 ± 2 ℃, 292 ± 2 ℃, 291 ± 2 ℃ and 291 ± 2 ℃;
(3) melt adopts ring blowing process for cooling solidify out into strand after spinnerets is extruded as the melt thread; The process conditions of ring blowing are: 21 ± 2 ℃ of wind-warm syndrome, blast 40～50Pa, humidity 70 ± 5%;
(4) oil tow behind the boundling of nozzle is to carry out preparatory network under the condition of 0.7 ± 0.05 bar at pressure, again through first hot-rolling, and speed 1750～1850m/min, 80～90 ℃ of temperature; Second hot-rolling, 120～130 ℃ of temperature;
(5) draw speed with 4600m/min～5000m/min carries out coiling and molding, the polyester of processing specification and the be 76dtex/24f～110dtex/72f slub yarn spinning cake that stretches entirely.
4. the stretch full preparation method of slub yarn of polyester according to claim 3, it is characterized in that: the inherent viscosity of said polyester slice is 0.648dl/g.
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Cited By (7)
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| CN104451919A (en) * | 2014-11-26 | 2015-03-25 | 中润科技股份有限公司 | Production technology for orderly dacron bamboo node yarns of identical specification |
| CN104988589A (en) * | 2015-06-15 | 2015-10-21 | 湖州菁诚纺织品有限公司 | Processing technology of dual-absorption color filaments |
| CN107190337A (en) * | 2017-05-27 | 2017-09-22 | 桐昆集团浙江恒盛化纤有限公司 | A kind of production method of fancy ring fiber |
| CN107988675A (en) * | 2018-01-18 | 2018-05-04 | 海宁市御纺织造有限责任公司 | A kind of processing unit (plant) of composite 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 |
| CN109666988A (en) * | 2018-12-27 | 2019-04-23 | 江苏恒力化纤股份有限公司 | The preparation method of slub yarn |
| CN114318610A (en) * | 2021-12-14 | 2022-04-12 | 苏州盛虹纤维有限公司 | Bunchy yarn and production method thereof |
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| CN109666988B (en) * | 2018-12-27 | 2020-08-14 | 江苏恒力化纤股份有限公司 | Preparation method of slub yarn |
| CN114318610A (en) * | 2021-12-14 | 2022-04-12 | 苏州盛虹纤维有限公司 | Bunchy yarn and production method thereof |
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Application publication date: 20121219 |