CN103114344A - Porous superfine denier polyester pre-oriented yarn and preparation method thereof - Google Patents
Porous superfine denier polyester pre-oriented yarn and preparation method thereof Download PDFInfo
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- CN103114344A CN103114344A CN2013100429065A CN201310042906A CN103114344A CN 103114344 A CN103114344 A CN 103114344A CN 2013100429065 A CN2013100429065 A CN 2013100429065A CN 201310042906 A CN201310042906 A CN 201310042906A CN 103114344 A CN103114344 A CN 103114344A
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Abstract
The invention relates to a porous superfine denier polyester pre-oriented yarn and a preparation method of the porous superfine denier polyester pre-oriented yarn. Terephthalic acid and ethylene glycol are adopted to be used as raw materials of polyester, and the existing production equipment of pre-oriented yarn (POY) is adopted. The main technological parameter of the porous superfine denier polyester pre-oriented yarn is: the diameter of spinneret plate microporous is 0.10-0.15 millimeter, the height of a slow cooling area is 80-150 millimeters, and the slow cooling area is combined with ring windchill; two nozzle oiling systems and reasonable winding tension and speed are adopted, the porous superfine denier polyester pre-oriented yarn which is 44-55 dtex / 192f is obtained, and the filament number of the porous superfine denier polyester pre-oriented yarn is 0.23-0.29 dtex. The porous superfine denier polyester pre-oriented yarn has the advantages of being plural in pore number, small in filament number, low in absolute intensity, small in bending rigidity, large in specific surface area and voidage, soft, light in weight and the like. Moreover, the porous superfine denier polyester pre-oriented yarn further has the advantages that filament aggregation has a good capillary core absorption effect and a better ventilation wet guiding function, added value is high, quality is good, production cost is low, the advantage of cost performance is obvious and application prospect is broad.
Description
Technical field
The present invention relates to a kind of Direct-spinning of PET Fiber technique, particularly a kind of porous super fine denier polyester pre-oriented yarn and preparation method thereof.
Background technology
fine fibre raw material has become current exploitation light and thin type superfine fibre dress material, the focus of the textiless such as high density fabric goods and peach face, at present, generally with the polyester pre-oriented yarn of line density industrialization more than 0.50dtex/f as first-selected fibrous raw material, because it has good intensity, elasticity and easily washing, quick-drying, the characteristic such as non-ironing, be subject to consumer's favorable comment in the field of taking, but it is low also to exist hydroscopicity, the moisture transported permeable poor performance, chromatophilia is poor, Boardy Feeling, the wax sense, aurora etc. are significantly not enough, the wearing comfort of fabric is difficult to satisfy people's needs, therefore limited it at clothing, especially the application in fashionable dress.
it is the porous super fine denier polyester pre-oriented yarn of 0.23～0.29dtex/f for the superfine fibre monofilament linear density, has holes on synthetic fibres many, line density is low, specific area is large, larger shape ratio, absolute intensity is low, the soft pliability that bending stiffness is little and good, the characteristics such as flexibility, and monofilament linear density is the fiber of 0.33dtex, its bending stiffness is lower approximately 10 times than the fiber of 1dtex, can give the feel of fiber softening, be conducive to fabric napping or sand milling, fabric is processed through sanding, the surface forms fine and closely woven fine hair, have fine and smooth feel and good drapability as the peach skin, therefore, superfine fibre has a wide range of applications in peach face and velure fabric.
At present, adopt supporting POY equipment and process technology to be difficult to also to solve that the lousiness broken end that the porous super fine denier polyester pre-oriented yarn product of preparation monofilament linear density below 0.29dtex/f exist is many, spinnability is poor, unstable this difficult problem of production status both at home and abroad.this is because adopt the high speed Direct Spinning to prepare the porous super fine denier polyester pre-oriented yarn fiber that 44dtex～55dtex/192f(monofilament linear density is 0.23dtex～0.29dtex/f), because holes on synthetic fibres is more, the single fiber fiber number is thin and specific area is large, the spray volume of melt is little, the spinneret face temperature is difficult to guarantee, easily cause the spinneret face wire vent not smooth, after spinning melt is extruded, the corresponding frictional force that has increased melt thread and air, spinning tension is increased, cause the tensile stress that fiber can bear also to descend thereupon, producing the lousiness broken end increases, and the after-drawing processing characteristics is deteriorated, simultaneously, it is poor also can't to solve the melt mixed uniformity and the cooling uniformity that exist in spinning technique, porous fine and the poor and strand of ribbon structural homogeneity is done irregular rate variance, and the qualitative problem such as dyeing uniformity is poor, can't realize improving effective control of the stability of spinning operation to reducing monofilament linear density.
Summary of the invention
The present invention be directed to the existing deficiency of porous superfine fibre on technology of preparing, provide a kind of wearing comfort good, bar is done even, stay-in-grade porous super fine denier polyester pre-oriented yarn and preparation method thereof.
Realize that the technical scheme of the object of the invention is to provide a kind of preparation method of porous super fine denier polyester pre-oriented yarn, carry out polymerization take terephthalic acid (TPA) and ethylene glycol as raw material, obtain polyester fondant after melting, adopt the POY production equipment, make porous super fine denier polyester pre-oriented yarn, its main technologic parameters is as follows:
The booster pump outlet pressure is 128 ± 2 bar;
Spinning body temperature is 294 ± 1 ℃;
Component pressure is 160～175 bar;
The sand proportioning is 100/220 order/g;
The spinnerets diameter is 85～95mm, and hole count is 192f, and spinnerets micro-pore diameter D is 0.10～0.15mm, and spinnerets micropore length L is 3.5～5.5 with the ratio L/D of spinnerets micro-pore diameter D;
Cooling curing adopts slow cooling district and ring quenching combining form, and slow cooling district height is 80～150mm; The ring blowing air pressure is 10～15Pa; Ring blowing temperature is 19 ± 1 ℃; Ring blowing humidity is 85 ± 5%;
Spinning tension is 6～10cN;
Adopt two road nozzle oil feeding systems, the finish mass concentration is 10 ± 0.1%;
The first hot Kun speed is 2083～2133m/min, and the second hot Kun speed is 2083～2123 m/min;
Winding tension is 4～6cN; Winding speed is 2050～2100 m/min.
Technical solution of the present invention also comprises a kind of porous super fine denier polyester pre-oriented yarn that obtains by above-mentioned preparation method, and its specification is 44dtex～55dtex/192f, and monofilament linear density is 0.23～0.29dtex/f.
The invention solves prior art spinning monofilament linear density and be that the lousiness that exists in 0.23dtex-0.29dtex/f porous super fine denier polyester pre-oriented yarn spinning process is many, yarn unevenness reaches greatly the unsettled defective of quality, only on the basis of original POY production equipment, by appropriate design spinnerets pore size, to improve the melt viscosity under the polyester low shear rate, increase spinning melt mobile convergence in spinneret orifice, prevent melt fracture; Increase the slow cooling zone device, guarantee the temperature after higher spinneret face temperature and melt spray spinnerets; Adopt the type of cooling of ring quenching composite set and the adjustment of fiber superfining process parameter, improve rheological characteristic and the spinnability of melt; Adopt two road nozzle oil feeding systems and improved the boundling position that oils, reduced frictional resistance and the winding tension on the spinning threadling, suppress the crystalline orientation structure, improve porous super fine denier polyester preorientation strand and do uniformity and quality stability, the assurance spinning is normally carried out smoothly.By the porous super fine denier polyester pre-oriented yarn that technique scheme prepares, reached the effect of spinning technique stability and high quality fiber quality preferably.
the present invention is on the basis of original POY production equipment, take terephthalic acid (TPA) (PTA) and ethylene glycol (EG) as raw material, adopt rational technological parameter, it is 44dtex～55dtex/192f that direct high speed spinning prepares specification, the porous super fine denier polyester pre-oriented yarn fiber of monofilament linear density below 0.29dtex/f, compared with prior art, the holes on synthetic fibres that the present invention obtains is many, filament number is little, absolute intensity is low, bending stiffness is little, specific area is large, has good soft pliability, flexibility, the characteristics such as light weight and larger shape compare, because the product monofilament linear density is fiber below 0.29dtex, its bending stiffness is lower approximately 10 times than the fiber of 1dtex, therefore, can give the feel of fiber softening, be conducive to fabric napping or sand milling, fabric is processed through sanding, the surface forms fine and closely woven fine hair, has good drapability, resilience, warmth retention property, feel is sliding gentle, the soft wearing comfort that waits of gloss.Product possesses technology content and added value is high, quality is good, production cost is low, the obvious characteristics of superiority of effectiveness are applicable to woven, braiding and produce light and thin type superfine fibre dress material, two-way high high-grade fashion material and the home textile products such as high density fabric, simulate wool suede, peach face and velure fabric of shrinking.
The specific embodiment
Technical solution of the present invention is to provide a kind of polymerization system take terephthalic acid (TPA) (PTA) and ethylene glycol (EG) as raw material, and the polyester fondant direct fabrics that polymerization the is obtained processing preparation fiber dimensious that is shaped is that 44dtex～55dtex/192f, filament number are the technique of the porous super fine denier polyester pre-oriented yarn of 0.23dtex～0.29dtex.Below in conjunction with embodiment, technical solution of the present invention is described further.
Embodiment 1:
It is the production technology of 55dtex/192f that the present embodiment provides a kind of polyester pre-oriented yarn specification.
this product adopts high-speed spinning Direct Spinning porous super fine denier polyester pre-oriented yarn technique, to carry out polymerization take terephthalic acid (TPA) (PTA) and ethylene glycol (EG) as raw material, the polyester fondant that polymerization is obtained enters booster pump and carries out supercharging after fondant filter filters out impurity, then entering melt cooler carries out cooling to reduce the degraded of melt, enter again and enter spinning manifold after a plurality of static mixers fully mix, carrying out the flow measurement melt by measuring pump enters in filament spinning component shunting to intersect blend even, (pore size is 0.12mm from the spinnerets micropore, L/D=4.0) extrude, be shaped through slow cooling district (being highly 125mm) and ring quenching district's combination cooling curing, the two road oil nozzles boundling that oils, the pre-network of tow is to coiling and molding, make porous super fine denier polyester pre-oriented yarn spinning cake.The concrete technology flow process is: terephthalic acid (TPA) and ethylene glycol → polyester fondant → fondant filter → booster pump → melt cooler → static mixer → spinning manifold → measuring pump → filament spinning component → melt extrusion → slow cooling → ring quenching → two road oil nozzles boundling → pre-network → coiling and molding → make porous super fine denier polyester pre-oriented yarn that oils.Technological parameter is referring to table 1, and the performance indications of product are seen ginseng table 2.
Table 1:55dtex/192f spinning technique working process parameter
| Sequence number | Project | Unit | Parameter |
| 1 | Fine density | dtex | 55 |
| 2 | The booster pump outlet pressure | bar | 128 |
| 3 | Temperature after heat exchanger | ℃ | 286 |
| 4 | Spinning body temperature | ℃ | 294 |
| 5 | The measuring pump model | ccm/rev | 0.8 |
| 6 | The measuring pump rotating speed | rpm | 12.93 |
| 7 | Component pressure | bar | 175 |
| 8 | The sand proportioning | Order/g | 100/220 |
| 9 | Screen pack | — | 10μ |
| 10 | The spinnerets specification | mm | φ95*192 |
| 11 | Micro-pore diameter and draw ratio (L/D) | mm | D=0.12、L=0.48、L /D= 4 |
| 12 | The ring blowing air pressure | Pa | 15 |
| 13 | Ring blowing temperature | ℃ | 19 |
| 14 | Ring blowing humidity | % | 85 |
| 15 | Oiling method | ? | Oil nozzle |
| 16 | The position oils | mm | 600 |
| 17 | The oil pump specification | ccm/rev | 0.05 |
| 18 | The finish model | ? | SS |
| 19 | Oil concentration | % | 10 |
| 20 | Pump speed | rpm | 10.4 |
| 21 | Winding tension | cN | 5 |
| 22 | Spinning tension | cN | 9 |
| 23 | Winding angle 0 | o | 5.5 |
| 24 | Winding angle 1 | o | 5.7 |
| 25 | Winding angle 2 | o | 5.9 |
| 26 | Winding angle 3 | o | 6.1 |
| 27 | Winding angle 4 | o | 6.3 |
| 28 | Winding angle 5 | o | 6.5 |
| 29 | Winding angle 6 | o | 6.3 |
| 30 | Winding angle 7 | o | 6.1 |
| 31 | Winding angle 8 | o | 5.9 |
| 32 | Winding angle 9 | o | 5.5 |
| 33 | Contact | cN | 140 |
| 34 | Contact | cN | 140 |
| 35 | Contact | cN | 155 |
| 36 | Contact | cN | 155 |
| 37 | Contact | cN | 165 |
| 38 | Contact | cN | 165 |
| 39 | Contact | cN | 175 |
| 40 | Contact | cN | 175 |
| 41 | GR1 speed | m/min | 2133 |
| 42 | GR2 speed | m/min | 2123 |
| 43 | Network pressure | bar | 0.3 |
| 44 | Winding speed | m/min | 2100 |
| 45 | Volume is heavy | kg | 10 |
Table 2: product performance index
| Line density | dtex | 55 |
| The line density deviation | % | 0.32 |
| The line density coefficient of variation | % | 0.92 |
| Fracture strength | cN/dtex | 2.61 |
| The fracture strength coefficient of variation | % | 3.5 |
| Elongation at break | % | 115.7 |
| The elongation at break coefficient of variation | % | 3.7 |
| Oil-containing | % | 0.6 |
| Boiling water shrinkage | % | 40.78 |
| Yarn unevenness U% | Level | 0.72 |
Embodiment 2:
It is the production technology of 44dtex/192f that the present embodiment provides a kind of polyester pre-oriented yarn specification.
this product adopts high-speed spinning Direct Spinning porous super fine denier polyester pre-oriented yarn technique and device thereof, to carry out polymerization take terephthalic acid (TPA) (PTA) and ethylene glycol (EG) as raw material, the polyester fondant that polymerization is obtained enters booster pump and carries out supercharging after fondant filter filters out impurity, then entering melt cooler carries out cooling to reduce the degraded of melt, enter again and enter spinning manifold after a plurality of static mixers fully mix, carry out the flow measurement melt by measuring pump and enter shunting intersection blend in filament spinning component, evenly, (pore size is 0.12mm from the spinnerets micropore, L/D=4.0) extrude, be shaped through slow cooling district (being highly 125mm) and ring quenching district's combination cooling curing, the two road oil nozzles boundling that oils, the pre-network of tow is to coiling and molding, make porous super fine denier polyester pre-oriented yarn spinning cake.The concrete technology flow process is: terephthalic acid (TPA) and ethylene glycol → polyester fondant → fondant filter → booster pump → melt cooler → static mixer → spinning manifold → measuring pump → filament spinning component → melt extrusion → slow cooling → ring quenching → two road oil nozzles boundling → pre-network → coiling and molding → make porous super fine denier polyester pre-oriented yarn that oils.Technological parameter is referring to table 3, and the performance indications of product are referring to table 4.
Table 3:44dtex/192f spinning technique working process parameter
| Sequence number | Project | Unit | Parameter |
| 1 | Fine density | dtex | 44 |
| 2 | The booster pump outlet pressure | bar | 128 |
| 3 | Temperature after heat exchanger | ℃ | 286 |
| 4 | Spinning body temperature | ℃ | 294 |
| 5 | The measuring pump model | ccm/rev | 0.8 |
| 6 | The measuring pump rotating speed | rpm | 10.1 |
| 7 | Component pressure | bar | 160 |
| 8 | The sand proportioning | Order/g | 100/220 |
| 9 | Screen pack | — | 10μ |
| 10 | The spinnerets specification | mm | φ95*192 |
| 11 | Micro-pore diameter and draw ratio (L/D) | mm | D=0.12、L=0.48、L /D= 4 |
| 12 | The ring blowing air pressure | Pa | 10 |
| 13 | Ring blowing temperature | ℃ | 19 |
| 14 | Ring blowing humidity | % | 85 |
| 15 | Oiling method | ? | Oil nozzle |
| 16 | The position oils | mm | 600 |
| 17 | The oil pump specification | ccm/rev | 0.05 |
| 18 | The finish model | ? | SS |
| 19 | Oil concentration | % | 10 |
| 20 | Pump speed | rpm | 8.3 |
| 21 | Winding tension | cN | 4 |
| 22 | Spinning tension | cN | 6 |
| 23 | Winding angle 0 | o | 5.5 |
| 24 | Winding angle 1 | o | 5.7 |
| 25 | Winding angle 2 | o | 5.9 |
| 26 | Winding angle 3 | o | 6.1 |
| 27 | Winding angle 4 | o | 6.3 |
| 28 | Winding angle 5 | o | 6.5 |
| 29 | Winding angle 6 | o | 6.3 |
| 30 | Winding angle 7 | o | 6.1 |
| 31 | Winding angle 8 | o | 5.9 |
| 32 | Winding angle 9 | o | 5.5 |
| 33 | Contact | cN | 140 |
| 34 | Contact | cN | 140 |
| 35 | Contact | cN | 155 |
| 36 | Contact | cN | 155 |
| 37 | Contact | cN | 165 |
| 38 | Contact | cN | 165 |
| 39 | Contact | cN | 175 |
| 40 | Contact | cN | 175 |
| 41 | GR1 speed | m/min | 2083 |
| 42 | GR2 speed | m/min | 2083 |
| 43 | Network pressure | bar | 0.2 |
| 44 | Winding speed | m/min | 2050 |
| 45 | Volume is heavy | kg | 8 |
Table 4: product performance index
| Line density | dtex | 44 |
| The line density deviation | % | 0.34 |
| The line density coefficient of variation | % | 0.92 |
| Fracture strength | cN/dtex | 2.7 |
| The fracture strength coefficient of variation | % | 3.0 |
| Elongation at break | % | 114.1 |
| The elongation at break coefficient of variation | % | 3.8 |
| Oil-containing | % | 0.6 |
| Boiling water shrinkage | % | 38.57 |
| Yarn unevenness U% | Level | 0.8 |
Claims (2)
1. the preparation method of a porous super fine denier polyester pre-oriented yarn, take terephthalic acid (TPA) and ethylene glycol as raw material carries out polymerization, obtain polyester fondant after melting, adopt the POY production equipment, make porous super fine denier polyester pre-oriented yarn, it is characterized in that technological parameter is as follows:
The booster pump outlet pressure is 128 ± 2 bar;
Spinning body temperature is 294 ± 1 ℃;
Component pressure is 160～175 bar;
The sand proportioning is 100/220 order/g;
The spinnerets diameter is 85～95mm, and hole count is 192f, and spinnerets micro-pore diameter D is 0.10～0.15mm, and spinnerets micropore length L is 3.5～5.5 with the ratio L/D of spinnerets micro-pore diameter D;
Cooling curing adopts slow cooling district and ring quenching combining form, and slow cooling district height is 80～150mm; The ring blowing air pressure is 10～15Pa; Ring blowing temperature is 19 ± 1 ℃; Ring blowing humidity is 85 ± 5%;
Spinning tension is 6～10cN;
Adopt two road nozzle oil feeding systems, the finish mass concentration is 10 ± 0.1%;
The first hot Kun speed is 2083～2133m/min, and the second hot Kun speed is 2083～2123 m/min;
Winding tension is 4～6cN; Winding speed is 2050～2100 m/min.
2. a kind of porous super fine denier polyester pre-oriented yarn that obtains by claim 1 preparation method, it is characterized in that: the specification of described pre-oriented yarn is 44dtex～55dtex/192f, monofilament linear density is 0.23～0.29dtex/f.
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Cited By (7)
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| CN104480556A (en) * | 2014-11-26 | 2015-04-01 | 中润科技股份有限公司 | Production process of high-speed spinning type potential crinkled polyester filament yarns |
| CN104480555A (en) * | 2014-11-26 | 2015-04-01 | 中润科技股份有限公司 | Production process of high-elasticity-feature terylene pre-oriented fibers |
| CN104878460A (en) * | 2015-04-29 | 2015-09-02 | 浙江海利得新材料股份有限公司 | Production method of anti-wicking ultralow-shrinkage industrial polyester filaments |
| CN105155004A (en) * | 2015-08-04 | 2015-12-16 | 桐昆集团股份有限公司 | Production method for terylene super-soft imitated silk fiber |
| CN106400157A (en) * | 2016-08-31 | 2017-02-15 | 桐昆集团浙江恒通化纤有限公司 | Preparation method of low orientation porous fine denier fiber |
| CN107868997A (en) * | 2017-12-14 | 2018-04-03 | 江苏恒力化纤股份有限公司 | Fused mass directly spinning washs ultra-soft composite filament and preparation method thereof |
| CN108301063A (en) * | 2017-12-21 | 2018-07-20 | 桐昆集团浙江恒腾差别化纤维有限公司 | A kind of production technology of ultra-fine soft suede fluffy fiber |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104878460A (en) * | 2015-04-29 | 2015-09-02 | 浙江海利得新材料股份有限公司 | Production method of anti-wicking ultralow-shrinkage industrial polyester filaments |
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| CN107868997A (en) * | 2017-12-14 | 2018-04-03 | 江苏恒力化纤股份有限公司 | Fused mass directly spinning washs ultra-soft composite filament and preparation method thereof |
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| CN108301063A (en) * | 2017-12-21 | 2018-07-20 | 桐昆集团浙江恒腾差别化纤维有限公司 | A kind of production technology of ultra-fine soft suede fluffy fiber |
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Application publication date: 20130522 |