CN102605444A - Process for producing polyester industrial yarns by liquid-phase tackified melts in multi-end direct spinning manner - Google Patents
Process for producing polyester industrial yarns by liquid-phase tackified melts in multi-end direct spinning manner Download PDFInfo
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Abstract
The invention discloses a process for producing polyester industrial yarns by liquid-phase tackified melts in a multi-end direct spinning manner, which belongs to the technical field of polyester industrial yarns and includes the following steps: liquid-phase tackifying; obtaining high-viscosity polyester melts with intrinsic viscosity ranging from 0.90dl/g to 1.10dl/g by tackifying low-viscosity polyester melts in a liquid phase; double-end spinning; directly conveying the polyester melts after being subjected to liquid-phase tackifying to different spinning positions capable of spinning in 16-24 ends; drafting and thermal-forming; winding and forming; and utilization of a twin winding machine to perform high-speed winding of 16-24 spindle spinning cakes. In the process, 16-end direct spinning of high-strength or low-shrinkage polyester industrial yarns with a single end ranging from 800D to 1300D and 24-end direct spinning of low-denier polyester industrial yarns with a single end ranging from 100D to 500D can be realized on the same spinning position, and product production efficiency is high, performance is stable, production energy consumption and equipment investment cost are low.
Description
Technical field:
The present invention relates to a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology, specifically belong to the terylene industrial fiber and make the field.
Background technology:
At present; Generally adopt solid phase polycondensation melt-spinning technology route to produce polyester industrial yarn both at home and abroad; The low adhesive aggregation ester melt that is the melt polycondensation gained makes the high viscosity polyester section of inherent viscosity at 0.90～1.10dl/g through pelletizing, drying, crystallization, solid phase polycondensation; Section is adopted the screw extruder melt spinning after dry; Use that this explained hereafter polyester industrial yarn equipment investment cost is high, the material cycling cycle is long, energy consumption is big, and because screw extruder flow, equipment and process technology limit, at present single spin the position can only carry out at most 8 spin or 12 spin.The liquid-phase tackifying fusant direct spinning technology is a kind of brand-new polyester industrial yarn spining technology; Adopt this technology directly to carry out tackify and obtain the high viscosity polyester melt the low adhesive aggregation ester melt behind the melt polycondensation; The high viscosity polyester melt can be delivered directly to each spinning station and carry out spinning, has distinguishing features such as energy consumption is low, equipment investment cost is few.
At present, the technology that adopts the liquid-phase tackifying fusant bull directly to spin the production polyester industrial yarn occurs as yet.
Summary of the invention:
Technical problem to be solved by this invention is; A kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology is provided; Break through the flow restriction of traditional screw rod fusion; Make 16～24 spining technologies become possibility, be equipped with rational technical matters condition, realize purpose low-cost, high efficiency production polyester industrial yarn.
The technical scheme that the present invention takes for the realization above-mentioned purpose is following:
A kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology is characterized in that, may further comprise the steps:
(1) liquid-phase tackifying: the resulting low adhesive aggregation ester melt of melt polycondensation carries out tackify through the liquid-phase tackifying reactor, obtains the high viscosity polyester melt of inherent viscosity at 0.90～1.10dl/g;
The liquid-phase tackifying reactor adopts vertical liquid phase viscosity-increasing reactor, and melt is gravity nature film forming in reactor, 270～290 ℃ of temperature, pressure 50～130Pa, tackify time 60～90min;
(2) bull spinning: the high viscosity polyester melt is delivered directly to each spinning station, and each spinning station adopts 16～24 spinning, and by the spinnerets ejection, boundling oils melt after the lateral blowing cooling after metering, filtration;
(3) drawing and heat-setting: high-strength polyester industrial yarns adopts two-stage drawing-off one-level relaxation heat setting, and low contraction terylene industry silk adopts two-stage drawing-off two-stage relaxation heat setting;
(4) coiling and molding: the fiber after the drawing and heat-setting is through coiling and molding after the network processes.Reel and adopt the twins up-coiler, carry out 16～24 coilings simultaneously.
Further be provided with and be:
Described bull spinning is spun the position at each and is provided with 2 spinning manifolds, and each casing is provided with 4 planet pumps; The planet pump contains 1 melt inlet and 4～6 melt outlets, and each casing is furnished with 4～6 filament spinning components, and filament spinning component adopts two-in-one design; Be that each filament spinning component comprises two independently melt gateway, filter, baffles; And shared same block of spinnerets, spinnerets adopts and divides the plate design, and each filament spinning component can carry out two synnema spinning.
Said spinning technology parameter: pressing before the measuring pump is 5～8MPa, presses 15～20MPa behind the pump; Filter Precision is 15～20 μ m; 310～350 ℃ of slow cooling district temperature; The coldblast wind speed is 0.3～0.6m/s, 20～25 ℃ of wind-warm syndrome, rheumatism 60%～80%.
Described oiling process, wherein 16 are spun high-strength and low-shrinkage polyester industrial yarn boundling oils and below spinning shaft, carries out, and 24 are spun low denier polyester industrial yarn boundling and oil and between quenching air window and spinning shaft, carry out.
Described oiling process adopts oil nozzle two roads to oil, and finish is that the oil pump of 0.05～0.10CC is delivered to each oil nozzle uniformly by specification, and always the rate of oiling is 0.4%～1.05%.
Said high-strength polyester industrial yarns adopts two-stage drawing-off one-level relaxation heat setting, and wherein first order drafting multiple 3.4～4.0,110～130 ℃ of drawing temperatures; Second level drafting multiple 1.5～2.0,220～235 ℃ of drawing temperatures, total draft multiple 5.6～6.2; 150～190 ℃ of lax temperature, total relaxation is than 0.8%～3.0%.
Said low contraction terylene industry silk adopts two-stage drawing-off two-stage relaxation heat setting, first order drafting multiple 3.4～4.0,110～130 ℃ of drawing temperatures; Second level drafting multiple 1.4～1.8,240～250 ℃ of drawing temperatures, total draft multiple 5.6～6.0; 240～250 ℃ of first order relaxation heat setting temperature, 230～240 ℃ of second level relaxation heat setting temperatures, total relaxation is than 7%～10%.
Described network processes, Network device pressure are 0.15～0.40Mpa.
The present invention adopts vertical liquid phase viscosity-increasing reactor tackify; Cooperate the bull spinning technique; Multistage drafting and multistage relaxation heat setting, and unique twins' up-coiler carries out high-speed winding, thus realized liquid-phase tackifying fusant bull direct spinning terylene industrial silk; This technology is compared with existing polyester industrial yarn production technology, has following beneficial effect:
1, the material cycling cycle is short: saved melt pelletizing, drying, screw rod fusion operation in the conventional solid phase polycondensation melt-spinning technology route; Melt viscosity increases to 1.05dl/g from 0.68dl/g and only needs 60～90min during liquid-phase tackifying, adopts solid phase polycondensation then to need about 30h;
2, energy consumption is low: but adopt technology of the present invention to produce polyester industrial yarn energy efficient about 25%;
3, production efficiency is high: can carry out 16～24 spinning, a single production capacity of spinning increases substantially, and will be 2～4 times of existing production technology.
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further.
Description of drawings:
Fig. 1 is a process chart of the present invention.
Label among the figure: 1 is booster pump, and 2 is the twin filter, and 3 is vertical liquid phase viscosity-increasing reactor, and 4 is spinning manifold; 5 is spinning shaft, and 6 is first pair of spinning roller, and 7 is preparatory Network device; 8 is the master network device, and 9 is tension rollers, and 10 is the first counter extensioin roller; 11 is the second counter extensioin roller, and 12 is the laxation shaping roller, and 13 is the twins up-coiler.
The specific embodiment:
According to technological process shown in Figure 1, adjust each technological parameter, the embodiment for preparing various types of polyester industrial yarns such as high-strength, low-shrinkage respectively is following.
Embodiment 1: 16 of melts directly spin the 1000D high-strength polyester industrial yarns.
(1), liquid-phase tackifying:
Make the low adhesive aggregation ester melt that inherent viscosity is 0.64～0.69dl/g through melt polycondensation; Low adhesive aggregation ester melt is through booster pump 1 supercharging; After twin filter 2 filters, be delivered to the top of vertical liquid phase viscosity-increasing reactor 3, in vertical liquid phase viscosity-increasing reactor 3, evenly flow down by gravity nature film forming; 270～290 ℃ of temperature, pressure 50～130Pa in the vertical liquid phase viscosity-increasing reactor 3, obtaining inherent viscosity behind 60～90min is the high viscosity polyester melt of 0.90～1.10dl/g.
(2), bull spinning:
In the spinning manifold 4 through high viscosity polyester melt Conveying to each spinning station behind the liquid-phase tackifying; Each spinning station adopts 16 and directly spins; 290～300 ℃ of spinning manifold 4 temperature, by the spinnerets ejection, cooling forming, boundling oil melt behind the high slow cooling district of 300mm after measuring pump metering, filtration; Pressing before the measuring pump is 5～8MPa, presses 15～20MPa behind the pump; Filter Precision is 15～20 μ m; 310～350 ℃ of slow cooling district temperature; The coldblast wind speed is 0.3～0.6m/s, 20～25 ℃ of wind-warm syndrome, rheumatism 60%～80%; Oiling, 30～100mm place carries out under spinning shaft, adopts two road oil nozzles to oil, and by 2 oil pumps while fuel feeding, the oil pump specification is 0.05～0.10CC, and contains 1 fuel feed hole and 16 oil outlets, and always the rate of oiling is 0.40%～0.80%.
16 are directly spun: each spinning station is provided with two parallel spinning manifolds 4, and each spinning manifold 4 is provided with four planet pumps, and each planet pump contains a melt inlet and four melt outlets; Four filament spinning components of each spinning manifold 4 configuration; Each filament spinning component is provided with two independently melt gateway, filter and baffles, and shared same block of spinnerets, and spinnerets adopts and divides the plate design; Make single filament spinning component can carry out two synnema spinning, finally reach 16 and directly spin.
(3), drawing and heat-setting:
Adopt two-stage stretching one-level relaxation heat setting technology, first pair of spinning roller 6 speed is 400～600m/min; Tension rollers 9 speed are 420～620m/min, 80～100 ℃ of temperature; The first counter extensioin roller, 10 speed are 1500～2000m/min, 110～130 ℃ of temperature; The second counter extensioin roller, 11 speed are 2550～3650m/min, and temperature is 220～235 ℃; Laxation shaping roller 12 speed are 2530～3530m/min, and temperature is 150～170 ℃.
(4), coiling and molding:
Fiber after typing coiling and molding after network processes, master network device 8 pressure are 0.25～0.4Mpa, reel and adopt twins up-coiler 13, winding speed 2500～3500m/min, winding tension 170～230cN, 6.5 °～7.5 ° of winding angles.
Embodiment 2: 16 of melts directly spin the low contraction terylene industry silk of 1000D.
(1) liquid-phase tackifying:
Make the low adhesive aggregation ester melt that inherent viscosity is 0.64～0.69dl/g through melt polycondensation; Low sticking melt is delivered to vertical liquid phase viscosity-increasing reactor top through the booster pump supercharging, after filtering; Evenly flow down by gravity nature film forming; 270～290 ℃ of reactor temperatures, pressure 50～130Pa, obtaining inherent viscosity behind 60～90min is the high viscosity polyester melt of 0.90～1.00dl/g.
(2), bull spinning:
The spinning manifold of the melt Conveying behind the liquid-phase tackifying to each spinning station, 290～300 ℃ of spin manifold temperatures, each spins the position and contains two parallel spinning manifolds; Each casing is provided with 4 planet pumps, and the planet pump contains 1 melt inlet and 4 melt outlets, and each casing is furnished with 4 filament spinning components simultaneously; Filament spinning component adopts two-in-one design; Be that each filament spinning component comprises two independently melt gateway, filter, baffles, and shared same block of spinnerets, spinnerets adopts and divides the plate design; Make single filament spinning component can carry out two synnema spinning, finally reach 16 and spin.By the spinnerets ejection, cooling forming, boundling oil melt behind the high slow cooling district of 300mm after measuring pump metering, filtration.Pressing before the measuring pump is 5～8MPa, presses 15～20MPa behind the pump; Filter Precision is 15～20 μ m; 310～350 ℃ of slow cooling district temperature; The coldblast wind speed is 0.3～0.6m/s, 20～25 ℃ of wind-warm syndrome, rheumatism 60%～80%; Oiling, 30～100mm place carries out under spinning shaft, adopts two road oil nozzles to oil, and by 2 oil pumps while fuel feeding, the oil pump specification is 0.05～0.10CC, and contains 1 fuel feed hole and 16 oil outlets, and always the rate of oiling is 0.65%～1.05%.
(3), drawing and heat-setting:
Adopt two-stage stretching two-stage relaxation heat setting technology, the first pair roller speed is 450～550m/min; Tension rollers speed is 470～570m/min, 80～100 ℃ of temperature; The first counter extensioin roller speed is 1800～2200m/min, 110～130 ℃ of temperature; The second counter extensioin roller speed is 2750～3150m/min, and temperature is 240～250 ℃; The 1st pair of setting roller speed is 2650～3050m/min, and temperature is 240～250 ℃; Second pair of setting roller speed is 2450～2850m/min, and temperature is 230～240 ℃.
(4), coiling and molding:
Fiber after typing coiling and molding after network processes.Network device pressure is 0.16～0.25Mpa, " twins " formula of employing of reeling up-coiler, winding speed 2500～2900m/min, winding tension 60～100cN, 6.5 °～7.5 ° of winding angles.
Embodiment 3: 24 of melts directly spin the 500D high-strength polyester industrial yarns.
(1) liquid-phase tackifying:
Make the low adhesive aggregation ester melt that inherent viscosity is 0.64～0.69dl/g through melt polycondensation; Low sticking melt is delivered to vertical liquid phase viscosity-increasing reactor top through the booster pump supercharging, after filtering; Evenly flow down by gravity nature film forming; 270～290 ℃ of reactor temperatures, pressure 50～130Pa, obtaining inherent viscosity behind 60～90min is the high viscosity polyester melt of 0.90～1.10dl/g.
(2) bull spinning:
The spinning manifold of the melt Conveying behind the liquid-phase tackifying to each spinning station, 290～300 ℃ of spin manifold temperatures, each spins the position and contains two parallel spinning manifolds; Each casing is provided with 4 planet pumps, and the planet pump contains 1 melt inlet and 6 melt outlets, and each casing is furnished with 6 filament spinning components simultaneously; Filament spinning component adopts two-in-one design; Be that each filament spinning component comprises two independently melt gateway, filter, baffles, and shared same block of spinnerets, spinnerets adopts and divides the plate design; Make single filament spinning component can carry out two synnema spinning, finally reach 24 and spin.By the spinnerets ejection, cooling forming, preparatory network processes, boundling oil melt behind the high slow cooling district of 100mm after measuring pump metering, filtration.Pressing before the measuring pump is 5～8MPa, presses 15～20MPa behind the pump; Filter Precision is 15～20 μ m; 310～350 ℃ of slow cooling district temperature; The coldblast wind speed is 0.3～0.6m/s, 20～25 ℃ of wind-warm syndrome, rheumatism 60%～80%; Boundling oils and between cooling quench district and spinning shaft, carries out, and adopts one oil nozzle to oil, and by 2 oil pumps while fuel feeding, the oil pump specification is 0.05～0.10CC, and contains 1 fuel feed hole and 12 oil outlets, and always the rate of oiling is 0.65%～1.05%.
(3), drawing and heat-setting:
Adopt 2 grades of 1 grade of relaxation heat setting technologies that stretches, the first pair roller speed is 400～500m/min; Tension rollers speed is 420～520m/min, 80～100 ℃ of temperature; The first counter extensioin roller speed is 1500～2000m/min, 120～130 ℃ of temperature; The second counter extensioin roller speed is 2500～2800m/min, and temperature is 220～230 ℃; Setting roller speed is 2450～2750m/min, and temperature is 180～200 ℃.
(4), coiling and molding:
Fiber after typing coiling and molding after network processes.Network device pressure is 0.15～0.20Mpa, " twins " formula of employing of reeling up-coiler, winding speed 2400～2700m/min, winding tension 60～100cN, 4.8 °～5.6 ° of winding angles.
Effect analysis:
Product to above-mentioned three embodiment detects respectively, and its quality index is as shown in table 1.
Table 1: the polyester industrial yarn quality index of each embodiment preparation.
| Embodiment | Product type | Specification | Fiber number (dtex) | Ultimate strength (N) | Fracture strength (cN/dtex) | Elongation at break (%) | Dry-hot shrinkage (%) |
| 1 | High strong type | 1110dtex/192f | 1122.3 | 94.3 | 8.40 | 13.8 | 7.1 |
| 2 | Low miniature | 1110dtex/192f | 1114.5 | 81.5 | 7.31 | 21.2 | 3.3 |
| 3 | Low high strong type of dawn | 555dtex/96f | 558.2 | 45.4 | 8.13 | 15.1 | 6.3 |
Annotate: the product dry-hot shrinkage test condition of embodiment 1, embodiment 3 is 177 ℃, 1min, 0.05g/D; The xeothermic test condition of the product of embodiment 2 is 190 ℃, 15min, 0.01g/D.
Claims (8)
1. a liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology is characterized in that, may further comprise the steps:
(1) liquid-phase tackifying: the resulting low adhesive aggregation ester melt of melt polycondensation carries out tackify through the liquid-phase tackifying reactor, obtains the high viscosity polyester melt of inherent viscosity at 0.90～1.10dl/g;
The liquid-phase tackifying reactor adopts vertical liquid phase viscosity-increasing reactor, and melt is gravity nature film forming in reactor, 270～290 ℃ of temperature, pressure 50～130Pa, tackify time 60～90min;
(2) bull spinning: the high viscosity polyester melt is delivered directly to each spinning station, and each spinning station adopts 16～24 spinning, and by the spinnerets ejection, boundling oils melt after the lateral blowing cooling after metering, filtration;
(3) drawing and heat-setting: high-strength polyester industrial yarns adopts two-stage drawing-off one-level relaxation heat setting, and low contraction terylene industry silk adopts two-stage drawing-off two-stage relaxation heat setting;
(4) coiling and molding: the fiber after the drawing and heat-setting is through coiling and molding after the network processes;
Reel and adopt the twins up-coiler, carry out 16～24 coilings simultaneously.
2. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1 is characterized in that: described bull spinning, and spin the position at each and be provided with 2 spinning manifolds; Each casing is provided with 4 planet pumps; The planet pump contains 1 melt inlet and 4～6 melt outlets, and each casing is furnished with 4～6 filament spinning components, and filament spinning component adopts two-in-one design; Be that each filament spinning component comprises two independently melt gateway, filter, baffles; And shared same block of spinnerets, spinnerets adopts and divides the plate design, and each filament spinning component can carry out two synnema spinning.
3. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1 and 2 is characterized in that: said spinning technology parameter: pressing before the measuring pump is 5～8MPa, presses 15～20MPa behind the pump; Filter Precision is 15～20 μ m; 310～350 ℃ of slow cooling district temperature; The coldblast wind speed is 0.3～0.6m/s, 60～80 ℃ of wind-warm syndrome, rheumatism 70%～80%.
4. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1; It is characterized in that: described oiling process; Wherein 16 are spun high-strength and low-shrinkage polyester industrial yarn boundling oils and below spinning shaft, carries out, and 24 are spun low denier polyester industrial yarn boundling and oil and between quenching air window and spinning shaft, carry out.
5. according to claim 1 or 4 described a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technologies; It is characterized in that: described oiling process adopts oil nozzle two roads to oil; Finish is that the oil pump of 0.05～0.10CC is delivered to each oil nozzle uniformly by specification, and always the rate of oiling is 0.4%～1.05%.
6. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1; It is characterized in that: said high-strength polyester industrial yarns adopts two-stage drawing-off one-level relaxation heat setting; Wherein first order drafting multiple 3.4～4.0,110～130 ℃ of drawing temperatures; Second level drafting multiple 1.5～2.0,220～235 ℃ of drawing temperatures, total draft multiple 5.6～6.2; 150～190 ℃ of lax temperature, total relaxation is than 0.8%～3.0%.
7. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1; It is characterized in that: said low contraction terylene industry silk adopts two-stage drawing-off two-stage relaxation heat setting; First order drafting multiple 3.4～4.0,110～130 ℃ of drawing temperatures; Second level drafting multiple 1.4～1.8,240～250 ℃ of drawing temperatures, total draft multiple 5.6～6.0; 240～250 ℃ of first order relaxation heat setting temperature, 230～240 ℃ of second level relaxation heat setting temperatures, total relaxation is than 7%～10%.
8. a kind of liquid-phase tackifying fusant bull direct spinning terylene industrial silk production technology according to claim 1, it is characterized in that: described network processes, Network device pressure are 0.15～0.40Mpa.
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