CN104805513A - Production method of polyamide-6 fiber - Google Patents
Production method of polyamide-6 fiber Download PDFInfo
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- CN104805513A CN104805513A CN201510201143.3A CN201510201143A CN104805513A CN 104805513 A CN104805513 A CN 104805513A CN 201510201143 A CN201510201143 A CN 201510201143A CN 104805513 A CN104805513 A CN 104805513A
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- ring
- urceolus
- air
- shaped cavity
- air blow
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- 239000000835 fiber Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 229920002292 Nylon 6 Polymers 0.000 title claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 61
- 238000009987 spinning Methods 0.000 claims abstract description 52
- 238000004804 winding Methods 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims description 100
- 239000007921 spray Substances 0.000 claims description 25
- 239000004952 Polyamide Substances 0.000 claims description 20
- 229920002647 polyamide Polymers 0.000 claims description 20
- 238000005098 hot rolling Methods 0.000 claims description 10
- 230000003028 elevating effect Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000007669 thermal treatment Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000003556 assay Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000007689 inspection Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 17
- 239000004594 Masterbatch (MB) Substances 0.000 description 5
- 208000011580 syndromic disease Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 150000001413 amino acids Chemical class 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000003951 lactams Chemical class 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000013598 vector Substances 0.000 description 2
- 239000004953 Aliphatic polyamide Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920003231 aliphatic polyamide Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010036 direct spinning Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000009992 mercerising Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
- D01D13/00—Complete machines for producing artificial threads
-
- 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
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention discloses a production method of polyamide-6 fiber. The production method comprises the following steps: a, adding polyamide-6 chips to a screw extruder, and carrying out melted extrusion; b, spinning; c, carrying out cooling forming on silk bundles by using cross air blow by using a cross air blow spinning cooling device and oiling the cooled silk bundles, wherein the cross air blow to the silk bundles in the cross air blow spinning cooling device is divided into an upper layer and a lower layer which are independent of each other, wherein the upper layer of cross air blow is obliquely blown out upwards, and the lower layer of cross air blow is taken as a main body and horizontally blown out from a cross air blow cylinder; d, carrying out pre-interlacing, drafting, interlacing and winding; e, carrying out inspection package. According to the production method disclosed by the invention, the cross air blow is adopted to substitute for side air blow, so that a melt is uniformly cooled in each direction; the phenomenon that the inner layers and the outer layers of the silk bundles cannot be uniformly cooled is effectively avoided, and the unevenness rate of the silk bundles is reduced, so that the molding quality of the silk bundles is greatly improved; the polyamide-6 fiber prepared by the production method disclosed by the invention is excellent in various performances and has favorable market competitiveness.
Description
Technical field
The present invention relates to a kind of production method of chemical fibre, especially a kind of production method of nylon-6 fiber.
Background technology
The principal item of polyamide fibre is aliphatic polyamide fiber, and it can use a kind of monomer synthesize, as lactam or amino acid.Namely Arabic numerals now after polyamide fibre title show lactam used or amino acid whose carbon atom number, as polyamide fibre 6, polyamide fibre 66 etc.Polyamide fibre 6 i.e. polycaprolactam fiber, namely " the chemical fibre dictionary " 412 pages of the first edition second impression in 95 years disclose this concept: polycaprolactam fiber is called for short polyamide fibre 6 in China, product has monofilament, multifilament, textured filament and staple fibre etc., adopts melt direct spinning or slice spinning legal system to obtain finished fiber.Polyamide fibre 6 product has the characteristics such as high strength, wear-resisting, flexibility and skin sense of touch are gentle, in clothes, silk, umbrella, fishnet silk, cord fabric thread, carpet silk and engineering plastics field, there is wide purposes, therefore belong to the main flow kind of domestic chemical fiber enterprise, nylon fabric is also prevailing fabric on market.
Chinese patent ZL2013103368307 discloses a kind of polyamide fibre high-speed spinning process, and its spinning adopts ring quenching, belongs to immediate prior art.Chinese patent ZL201220462989.4 discloses a kind of Novel ring blowing device, it and traditional Novel ring blowing device difference are that the cooling air be blown into from blast pipe upwards runs under the stop of inner core, after the equal wind effect of rectification of double-deck plain net, finally enter in ring Blowing drum, it is than the advantage of prior art: cooling air in ring Blowing drum can be made evenly, weak point is that cooling performance is not good, along with spinning high-speed downstream, ring blowing is easily askew by band, especially not good at the ejection section cooling effect of as-spun fibre, therefore need to improve.
Summary of the invention
The object of the invention is the deficiency in order to solve above-mentioned technology and a kind of production method guaranteeing the nylon-6 fiber of spinning cooling effect designed.
The production method of a kind of nylon-6 fiber designed by the present invention, comprises the steps:
A, polyamide fibre 6 section is joined in screw extruder and carries out melt extruded;
B, the blend melt of melting is transported to spinning manifold, by measuring pump melt is expressed in filament spinning component and carries out spinning;
C, employing ring blowing spinning cooling device carry out cooling forming to the blowing of tow ring, again cooled tow is oiled, two-layer up and down and separate for being divided into the blowing of the ring of tow in described ring blowing spinning cooling device, upper layer circular air blow tilts upward blowout, lower layer circular air blow is main body, from ring Blowing drum level blowout, its at the middle and upper levels ring blowing temperature and temperature lower than lower layer circular air blow;
D, the tow after oiling is carried out pre-network by path and silk door, then the cold roller of tow, hot-rolling are carried out drawing-off, the tow after drawing-off is added network, then tow is imported mound bobbins and carry out high-speed winding and become cylinder;
E, after the assay was approved, polyamide fibre 6 fiber to be packed.
Preferred scheme is: described step c at the middle and upper levels ring blowing temperature 17.5 ~ 19.5 DEG C, speed is 0.4 ~ 0.5m/s, and humidity 65% ~ 78%, lower layer circular air blow temperature 18 ~ 20 DEG C, speed are 0.4 ~ 0.5m/s, humidity 67% ~ 80%.
Preferred scheme is: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 260 ~ 262 DEG C, a district, 265 ~ 268 DEG C, 2nd district, 265 ~ 268 DEG C, 3rd district, 265 ~ 268 DEG C, 4th district, 265 ~ 268 DEG C, 5th district, 265 ~ 268 DEG C, 6th district, and melt pressure is 11.5 ~ 12.5Mpa; In described step b, the temperature of spinning manifold is 265 ~ 270 DEG C; In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 150 ~ 170 DEG C, and drawing-off speed is 1.1; Winding speed is 4000 ~ 4200m/min.
Preferred scheme is: the ring blowing spinning cooling device adopted in step c comprises ring blowing device and air-conditioner set, and described ring blowing device comprises frame, lift cylinders, elevating lever, the first blast pipe, the second blast pipe, the first urceolus, the second urceolus, the 3rd urceolus, guiding air duct, ring Blowing drum and airfast inner core, described guiding air duct, ring Blowing drum and inner core set gradually from top to bottom and communicate, described lift cylinders and elevating lever erecting are in frame, first blast pipe and the second blast pipe are also located in frame, and the first blast pipe and the second blast pipe are all provided with deformation section and control valve, described second urceolus is connected to below the first urceolus, described 3rd urceolus is connected to below the second urceolus, the piston rod of described lift cylinders all with bottom described 3rd urceolus is connected with elevating lever top, be provided with described guiding air duct inside described first urceolus, described guiding air duct be covered with the oblique through hole of drying obliquely, what blow out from oblique through hole is upper layer circular air blow, described ring Blowing drum is positioned at described second urceolus, and be described lower layer circular air blow from the wind of ring Blowing drum blowout, described inner core is positioned at described 3rd urceolus and bottom exceeds described 3rd urceolus, region between described first urceolus and guiding air duct is the first ring-shaped cavity, region between described second urceolus and ring Blowing drum is the second ring-shaped cavity, described 3rd region between urceolus and inner core is the 3rd ring-shaped cavity, described first ring-shaped cavity is not communicated with the second ring-shaped cavity, described second ring-shaped cavity is communicated with the 3rd ring-shaped cavity, described first blast pipe to be connected on the 3rd urceolus and to communicate with described second ring-shaped cavity, described second blast pipe to be connected on the first urceolus and to communicate with described first ring-shaped cavity, the retainer ring being covered with through hole is provided with in the second urceolus bottom, be connected on retainer ring bottom described ring Blowing drum, ring-type mesh sheet is accompanied between described second urceolus and the 3rd urceolus, be provided with ring-type homogenating plate in described first ring-shaped cavity, described ring-type homogenating plate be covered with the first equal air holes, described air-conditioner set comprises fresh wind tube, backwind tube, delivery pipe, return fan, return air spray chamber, drain valve, new air-valve, coarse filter one, coarse filter two, front-mounted heating device, preposition surface cooler, first spray chamber, second spray chamber, first rearmounted surface cooler, second rearmounted surface cooler, first rearmounted heater, second rearmounted heater, first pressure fan, second pressure fan, first fine filter, second fine filter, first air outlet and the second air outlet, described fresh wind tube, coarse filter one, coarse filter two, front-mounted heating device, preposition surface cooler connects successively, new air-valve is located on fresh wind tube, described backwind tube is connected with fresh wind tube, described return fan and return air spray chamber are located on backwind tube, described delivery pipe is connected with backwind tube, described drain valve is located on delivery pipe, connects two branch roads, wherein a branch road is provided with the first spray chamber successively after described preposition surface cooler, first rearmounted surface cooler, first rearmounted heater, first pressure fan and the first air outlet, an other branch road is provided with the second spray chamber successively, second rearmounted surface cooler, second rearmounted heater, second pressure fan and the second air outlet, described first air outlet communicates with the first blast pipe of ring blowing device, and described second air outlet communicates with the second blast pipe of ring blowing device.
Preferred scheme is: be also provided with annular fan cover in described first urceolus, the undergauge section at described annular fan cover top is connected on the first urceolus by bearing, the ring segment of annular fan cover bottom is covered with the second equal air holes, ring segment and the ring-type homogenating plate of annular fan cover bottom are arranged side by side, and the undergauge section at described annular fan cover top exposes the first urceolus upper end and undergauge section is provided with gear.
Preferred scheme is: described gear and drives the stepper motor of its rotating to be in transmission connection, stepper motor is controlled by controller, wherein: the described first equal air holes and the second equal their registration of air holes are X, controller utilizes control step electric machine rotation to enter the air quantity of guiding air duct to the size and then control that regulate registration X.
Preferred scheme is: be provided with the first point for measuring temperature in described first ring-shaped cavity, the second point for measuring temperature is provided with in the second ring-shaped cavity, it is T1 that described first point for measuring temperature records temperature, it is T2 that second point for measuring temperature records temperature,, T1*a+ T2*b, as the final value of feedback TF measured, arranges standard value TB in controller, TF increases the value of registration X when being greater than TB, reduce the value of registration X when TF is less than TB.
Preferred scheme is: described second spray chamber adopts chilled water spray.
The production method of the nylon-6 fiber designed by the present invention, ring blowing is adopted to replace lateral blowing, make melt Homogeneous cooling in all directions, effectively prevent the phenomenon that tow ectonexine inhomogeneous cooling is even, reduce the yarn unevenness of tow, the Forming Quality of tow is promoted greatly, also shorten cool time simultaneously, two-layer up and down and separate for being divided into the blowing of the ring of tow in ring blowing spinning cooling device, the wind-warm syndrome of ring blowing can form two sections of independent controls, cooling effect better (in prior art, ring blowing only has a kind of temperature), and upper layer circular air blow tilts upward blowout, it is down fast to be about to wind under tow, cooling air slightly to blowing up can be used for offsetting the descending impact brought of tow, improve the cooling effect in the ejection section of as-spun fibre, lower layer circular air blow is main body, level blowout from ring Blowing drum, this section of refrigerating mode is dried identical with traditional ring, play the effect of spinning cooling, its at the middle and upper levels ring blowing temperature and temperature lower than lower layer circular air blow, improve on the one hand the cooling effect of the ejection section of as-spun fibre, the lower wind-warm syndrome in upper strata mixes with lower layer circular air blow and improves overall cooling effect, makes spinning cooling effect better, adopt nylon-6 fiber various aspects of performance obtained in this way excellent, there is the good market competitiveness, the benefit of enterprise can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of ring blowing device in the ring blowing spinning cooling device that adopts of the production method of embodiment 1 nylon-6 fiber;
Fig. 2 is the enlarged drawing at A place in Fig. 1;
Fig. 3 is the system schematic of air-conditioner set in the ring blowing spinning cooling device that adopts of the production method of embodiment 1 nylon-6 fiber;
Fig. 4 is the structural representation of ring blowing device in the ring blowing spinning cooling device that adopts of the production method of embodiment 5 nylon-6 fiber;
Fig. 5 is the enlarged drawing of the first outer cylinder portion shown in Fig. 4;
Fig. 6 is the enlarged drawing at B place in Fig. 5;
Fig. 7 is the schematic diagram of another kind of driving stepper motor structure in embodiment 5.
Detailed description of the invention
Below by embodiment, the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
The production method of the nylon-6 fiber described by the present embodiment, comprises the steps:
A, polyamide fibre 6 section is joined in screw extruder and carries out melt extruded;
B, the blend melt of melting is transported to spinning manifold, by measuring pump melt is expressed in filament spinning component and carries out spinning;
C, employing ring blowing spinning cooling device carry out cooling forming to the blowing of tow ring, again cooled tow is oiled, two-layer up and down and separate for being divided into the blowing of the ring of tow in described ring blowing spinning cooling device, upper layer circular air blow tilts upward blowout, lower layer circular air blow is main body, from ring Blowing drum level blowout, its at the middle and upper levels ring blowing temperature and temperature lower than lower layer circular air blow;
D, the tow after oiling is carried out pre-network by path and silk door, then the cold roller of tow, hot-rolling are carried out drawing-off, the tow after drawing-off is added network, then tow is imported mound bobbins and carry out high-speed winding and become cylinder;
E, after the assay was approved, polyamide fibre 6 fiber to be packed.
Wherein: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 260 DEG C, a district, 265 DEG C, 2nd district, 265 DEG C, 3rd district, 265 DEG C, 4th district, 265 DEG C, 5th district, 265 DEG C, 6th district, and melt pressure is 11.5 Mpa; In described step b, the temperature of spinning manifold is 265 DEG C; Described step c at the middle and upper levels ring blowing temperature 17.5 DEG C, speed is 0.4m/s, and humidity 65%, lower layer circular air blow temperature 18, speed are 0.4, humidity 67%.In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 150 DEG C, and drawing-off speed is 1.1; Winding speed is 4000m/min.
In order to realize above-mentioned technique, the special ring blowing spinning cooling device adopting our company to research and develop, namely the ring blowing spinning cooling device adopted in step c comprises ring blowing device 101 and air-conditioner set 102, and described ring blowing device 101 comprises frame 103, lift cylinders 104, elevating lever 105, first blast pipe 106, second blast pipe 107, first urceolus 108, second urceolus 109, the 3rd urceolus 110, guiding air duct 111, ring Blowing drum 112 and airfast inner core 113, described guiding air duct 111, ring Blowing drum 112 and inner core 113 set gradually from top to bottom and communicate, tow is middle through being cooled from them, described lift cylinders 104 and elevating lever 105 frame 103 are located in frame 103, first blast pipe 106 and the second blast pipe 107 are also located in frame 103, first blast pipe 106 and the second blast pipe 107 are all provided with deformation section 114 and control valve 115, the object that deformation section 114 is arranged is to coordinate lifting, and the object that control valve 115 is arranged is to regulate wind speed, described second urceolus 109 is connected to below the first urceolus 108, described 3rd urceolus 110 is connected to below the second urceolus 109, the piston rod of described lift cylinders 104 all with bottom described 3rd urceolus 110 is connected with elevating lever 105 top, be provided with described guiding air duct 111 inside described first urceolus 108, described guiding air duct 111 be covered with the oblique through hole 154 of drying obliquely, from oblique through hole 154, blowout is upper layer circular air blow, described ring Blowing drum 112 is positioned at described second urceolus 109, and the wind blown out from ring Blowing drum 112 is described lower layer circular air blow, and described inner core 113 is positioned at described 3rd urceolus 110 and bottom exceeds described 3rd urceolus 110, region between described first urceolus 108 and guiding air duct 111 is the first ring-shaped cavity 116, region between described second urceolus 109 and ring Blowing drum 112 is the second ring-shaped cavity 117, region between described 3rd urceolus 110 and inner core 113 is the 3rd ring-shaped cavity 118, described first ring-shaped cavity 116 is not communicated with the second ring-shaped cavity 117, described second ring-shaped cavity 117 is communicated with the 3rd ring-shaped cavity 118, described first blast pipe 106 to be connected on the 3rd urceolus 110 and to communicate with described second ring-shaped cavity 117, described second blast pipe 107 to be connected on the first urceolus 108 and to communicate with described first ring-shaped cavity 116, the retainer ring 119 being covered with through hole is provided with in the second urceolus 109 bottom, be connected to bottom described ring Blowing drum 112 on retainer ring 119, ring-type mesh sheet 120 is accompanied between described second urceolus 109 and the 3rd urceolus 110, be provided with ring-type homogenating plate 121 in described first ring-shaped cavity 116, described ring-type homogenating plate 121 be covered with the first equal air holes 122, described air-conditioner set 102 comprises fresh wind tube 131, backwind tube 132, delivery pipe 133, return fan 134, return air spray chamber 135, drain valve 136, new air-valve 137, coarse filter 1, coarse filter 2 139, front-mounted heating device 140, preposition surface cooler 141, first spray chamber 142, second spray chamber 143, first rearmounted surface cooler 144, second rearmounted surface cooler 145, first rearmounted heater 146, second rearmounted heater 147, first pressure fan 148, second pressure fan 149, first fine filter 150, second fine filter 151, first air outlet 152 and the second air outlet 153, described fresh wind tube 131, coarse filter 1, coarse filter 2 139, front-mounted heating device 140, preposition surface cooler 141 connects successively, new air-valve 137 is located on fresh wind tube 131, described backwind tube 132 is connected with fresh wind tube 131, described return fan 134 and return air spray chamber 135 are located on backwind tube 132, described delivery pipe 133 is connected with backwind tube 132, described drain valve 136 is located on delivery pipe 133, and described preposition surface cooler 141 connects two branch roads below, wherein a branch road is provided with the first spray chamber 142 successively, first rearmounted surface cooler 144, first rearmounted heater 146, first pressure fan 148 and the first air outlet 152, an other branch road is provided with the second spray chamber 143 successively, second rearmounted surface cooler 145, second rearmounted heater 147, second pressure fan 149 and the second air outlet 153, described first air outlet 152 communicates with the first blast pipe 106 of ring blowing device 101, and described second air outlet 153 communicates with the second blast pipe 107 of ring blowing device 101.
This ring blowing spinning cooling device, its air-conditioner set 102 has two outlets, different wind-warm syndrome and humidity can be provided, use stylish wind and workshop return air respectively through fresh wind tube 131, coarse filter 1, coarse filter 2 139, front-mounted heating device 140, preposition surface cooler 141 obtains preliminary treatment, two different branch roads are entered respectively from preposition surface cooler 141 wind out, spray chamber dedusting is obtained in each branch road, and utilize rearmounted surface cooler and rearmounted heater to control different temperature and humidity, finally after essence filter, blow out (i.e. the first air outlet 152 and the second air outlet 153) from different air outlets, first air outlet 152 communicates with the first blast pipe 106 of ring blowing device 101, described second air outlet 153 communicates with the second blast pipe 107 of ring blowing device 101, and in ring blowing device 101, first blast pipe 106 is main blast pipe, the cooling air blown out from the first air outlet 152 enters the 3rd urceolus 110 through the first blast pipe 106, it is the 3rd ring-shaped cavity 118 in 3rd urceolus 110, in this 3rd ring-shaped cavity 1187, cooling air can be uniformly distributed, and eventually to upper operation, the second ring-shaped cavity 117 is entered through ring-type mesh sheet 120 and retainer ring 119, ring-type mesh sheet 120 and retainer ring 119 make the cooling air upwards run become more even, cooling air in second ring-shaped cavity 117 has eliminated the impact from the first blast pipe 106 single admission substantially, make the cooling air wind-warm syndrome blast of the second ring-shaped cavity 117 inside all more even, main cooling is carried out eventually through ring Blowing drum 112 pairs of tow, because cooling air is more even, cooling effect is better, on the other hand, the cooling air blown out from the second air outlet 153 enters in the first urceolus 108 through the second blast pipe 107, there is one piece of ring-type homogenating plate 121 in the first urceolus 108, ring-type homogenating plate 121 is also the impact in order to eliminate single admission, make to be blown into wind obtains uniform distribution from the second blast pipe 107, and eventually through the oblique blowing up of guiding air duct 111, tow is cooled, on these, layer circular air blow tilts upward blowout, it is down fast to be about to wind under tow, cooling air slightly to blowing up can be used for offsetting the descending impact brought of tow, improve the cooling effect in the ejection section of as-spun fibre, improve product quality, and the first ring-shaped cavity 116 is not communicated with the second ring-shaped cavity 117, and both wind regimes are from independently branch road, therefore can carry out independent control, to coordinate different products to upper layer circular air blow and lower layer circular air blow.This ring blowing spinning cooling device, the height of the first urceolus 108, much smaller than the second urceolus 109, generally can be selected between 1:5 to 1:10; The acclivitous angle of oblique through hole 154 can be chosen between 45 degree at 5 degree, as 10 degree, and 20 degree etc.The same existing structure of ring Blowing drum 112, the structure such as can made with nonwoven fabric or wire netting.
Embodiment 2:
The production method of the nylon-6 fiber described by the present embodiment, the difference of controling parameters as different from Example 1: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 262 DEG C, a district, 268 DEG C, 2nd district, 268 DEG C, 3rd district, 268 DEG C, 4th district, 268 DEG C, 5th district, 268 DEG C, 6th district, and melt pressure is 12.5Mpa; In described step b, the temperature of spinning manifold is 270 DEG C; Described step c at the middle and upper levels ring blowing temperature 19.5 DEG C, speed is 0.5m/s, and humidity 78%, lower layer circular air blow temperature 20 DEG C, speed are 0.5m/s, humidity 80%.In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 170 DEG C, and drawing-off speed is 1.1; Winding speed is 4200m/min.
Embodiment 3:
The production method of the nylon-6 fiber described by the present embodiment, the difference of controling parameters as different from Example 2: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 261 DEG C, a district, 267 DEG C, 2nd district, 267 DEG C, 3rd district, 267 DEG C DEG C, 4th district, 267 DEG C, 5th district, 267 DEG C, 6th district, and melt pressure is 12Mpa; In described step b, the temperature of spinning manifold is 267 DEG C; Described step c at the middle and upper levels ring blowing temperature 18 DEG C, speed is 0.4m/s, and humidity 70%, lower layer circular air blow temperature 18.5 DEG C, speed are 0.4m/s, humidity 75%.In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 160 DEG C, and drawing-off speed is 1.1; Winding speed is 4100m/min.
Polyamide fibre 6 fibre property parameter obtained in above-mentioned three embodiments is as following table:
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Line density (dtex) | 78.0 | 74.4 | 74.4 |
| Line density coefficient of variation CV(%) | 1.00 | 1.21 | 1.20 |
| Fracture strength (cN/dtex) | 3.80 | 4.00 | 3.98 |
| Fracture strength coefficient of variation CV(%) | 6.0 | 6.1 | 6.0 |
| Elongation at break (%) | 36.6 | 38.9 | 39.7 |
| Extension at break coefficient of variation CV(%) | 8.6 | 9.0 | 9.0 |
| Dye uniformity (level) | 4 | 4 | 4 |
| Bar evenness CV(%) | 1.21 | 1.25 | 1.13 |
Embodiment 4:
The production method of the nylon-6 fiber described by the present embodiment, difference from Example 1 is ring blowing spinning cooling device as further improvement, namely annular fan cover 123 is also provided with in described first urceolus 108, the undergauge section 124 at described annular fan cover 123 top is connected on the first urceolus 108 by bearing 125, the ring segment 126 of annular fan cover 123 bottom is covered with the second equal air holes 129, ring segment 126 and the ring-type homogenating plate 121 of annular fan cover 123 bottom are arranged side by side, the undergauge section 124 at described annular fan cover 123 top exposes the first urceolus 108 upper end and undergauge section 124 is provided with gear 127.
In the present embodiment, gear 127 rotates and annular fan cover 123 can be driven to rotate, the registration X that annular fan cover 123 rotates rear second equal air holes 129 and the first equal air holes 122 just there occurs change, entering guiding air duct 111 air quantity also can be adjusted, according to different kinds, can manual adjustment gear 127 position, with obtain with the registration that adapts of production product.
Embodiment 5:
The production method of the nylon-6 fiber described by the present embodiment, difference from Example 4 is ring blowing spinning cooling device as further improvement, namely described gear 127 and drives the stepper motor 128 of its rotating to be in transmission connection, stepper motor 128 is controlled by controller 130, wherein: the described first equal air holes 122 and the second equal their registration of air holes 129 are X, controller 130 utilizes control step motor 128 to rotate the air quantity regulating the size of registration X and then control to enter guiding air duct 111.
Compared to embodiment 1, this is the introduction of automatic control, wind-warm syndrome is controlled more reasonable, can registration X be made 50% by adjusting gear 127, a point for measuring temperature can be chosen in the first ring-shaped cavity 116, be that X carries out closed-loop control to registration, during temperature height, increase the value of registration X, strengthen cooling air quantity, improve cooling effect, reduce the value of registration X when temperature is low, reduce cooling air quantity, guarantee cooling effect; Closed-loop control can adopt PID to control.
In order to consider every possible angle whole system, the first point for measuring temperature 155 is provided with in described first ring-shaped cavity 116, the second point for measuring temperature 156 is provided with in the second ring-shaped cavity 117, it is T1 that described first point for measuring temperature records temperature, it is T2 that second point for measuring temperature records temperature, , T1*a+ T2*b is as the final value of feedback TF measured, in controller 130, standard value TB is set, TF increases the value of registration X when being greater than TB, TF reduces the value of registration X when being less than TB, because two crural ring blowings are in fact mixed with in ring Blowing drum 112, therefore the temperature of lower layer circular air blow is needed also to take into account, therefore method sampled signal being weighted to process is adopted, wherein a is greater than b, if a is 0.9, b is 0.1, the weight making the first ring-shaped cavity 116 record temperature is greater than the second ring-shaped cavity 117, because controller 130 can only regulate the cooling air in the first ring-shaped cavity 116.
The effect of control valve 115 is constant, same prior art, for from controlled wind speed on deep bid, and the air quantity that controller 130 utilizes control step motor 128 rotation to regulate the size of registration X and then control to enter guiding air duct 111 is independent of control valve 115, in general, control valve 115 is distant, there is lag situation in the controlling, control valve 115 aperture changes to the change of guiding air duct 111 air quantity needs the regular hour, and control insensitive, the precision of control valve 115 own also has problem simultaneously; And this ring blowing spinning cooling device of my company invention is provided with in the position that distance guiding air duct 111 is nearest the structure regulating air quantity, delayed little, utilize and the stepper motor 128 of precise control of angular degree can do district and move, control effects is good.It is prior art that stepper motor 128 driven wheel 127 rotates, stepper motor 128 as shown in Figure 6 can be adopted directly to drive pinion 157 to engage with gear 127 realize (gear 127 is greater than pinion 157 can improve control accuracy), also the structure of Fig. 7 can be adopted, namely stepper motor 128 drives leading screw 158, leading screw 158 and one can on pedestal 160 reciprocating slide block 159 threaded engagement (leading screw 158 can pass slide block 159), slide block 159 is arranged gear 127 and engage, pedestal 160 can be located on the second blast pipe 107, also can be fixed on the first urceolus 108; Stepper motor 128 rotating can be with movable slider 159 to move back and forth, and realizes the rotation of gear 127, thus realizes the adjustment of registration X.
Above in each embodiment, described second spray chamber 143 adopts chilled water to spray, and chilled water temperature is low, except temp effect is better, is more conducive to manufacturing layer circular air blow.
Embodiment 6:
The production method of the nylon-6 fiber described by the present embodiment, for the manufacture of polyamide fibre 6 look silk, its step comprises:
A, to be cut into slices by polyamide fibre 6 and Masterbatch mixing, mixed section joined together with Masterbatch in screw extruder and carry out melt extruded, the weight of Masterbatch is 3% of coupon weight;
B, the blend melt of melting is transported to spinning manifold, by measuring pump melt is expressed in filament spinning component and carries out spinning;
C, employing ring blowing spinning cooling device carry out cooling forming to the blowing of tow ring, again cooled tow is oiled, two-layer up and down and separate for being divided into the blowing of the ring of tow in described ring blowing spinning cooling device, upper layer circular air blow tilts upward blowout, lower layer circular air blow is main body, from ring Blowing drum level blowout, its at the middle and upper levels ring blowing temperature and temperature lower than lower layer circular air blow;
D, the tow after oiling is carried out pre-network by path and silk door, then the cold roller of tow, hot-rolling are carried out drawing-off, the tow after drawing-off is added network, then tow is imported mound bobbins and carry out high-speed winding and become cylinder;
E, after the assay was approved, polyamide fibre 6 fiber to be packed.
Wherein: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 261 DEG C, a district, 266 DEG C, 2nd district, 266 DEG C, 3rd district, 266 DEG C, 4th district, 266 DEG C, 5th district, 266 DEG C, 6th district, and melt pressure is 12Mpa; In described step b, the temperature of spinning manifold is 267 DEG C; Described step c at the middle and upper levels ring blowing temperature 17.5 DEG C, speed is 0.4m/s, and humidity 70%, lower layer circular air blow temperature 18, speed are 0.4, humidity 72%.In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 150 DEG C, and drawing-off speed is 1.1; Winding speed is 4000m/min.
And the ring blowing spinning cooling device that the ring blowing spinning cooling device needed for producing adopts our company specially to study, namely select the structure identical with the ring blowing spinning cooling device described in embodiment 1 or embodiment 5, there is identical technique effect.
Wherein Masterbatch can be chosen from the market, also the formula of our company can be adopted, namely Masterbatch is made up of pigment, vector resin, dispersant, vector resin selects polyamide fibre 6 to cut into slices, dispersant adopts Tissuemat E, preparation (weight) ratio is 3: 6: 1, and pigment can be selected as required, as selected pigment black.
Obtained polyamide fibre 6 look silk has particular color, test performance: line density (dtex) 72.4, line density deviation ratio (%) 0.16, line density coefficient of variation CV(%) 0.36, fracture strength (cN/dtex) 4.31, fracture strength coefficient of variation CV(%) 4.46, elongation at break (%) 36.6, extension at break coefficient of variation CV(%) 7.09, boiling water shrinkage (%) 9.3, this bright and beautiful 6 synthetic fibre look mercerising pools evenly, have good market value.
Above-described embodiment is only to design of the present invention explanation for example, and significantly, the protection domain of this patent is not limited to above-described embodiment.
The various equivalent modifications or supplementary that those skilled in the art do above-described embodiment, all should fall into the protection domain of this patent.
Claims (8)
1. a production method for nylon-6 fiber, is characterized in that comprising the steps:
A, polyamide fibre 6 section is joined in screw extruder and carries out melt extruded;
B, the blend melt of melting is transported to spinning manifold, by measuring pump melt is expressed in filament spinning component and carries out spinning;
C, employing ring blowing spinning cooling device carry out cooling forming to the blowing of tow ring, again cooled tow is oiled, two-layer up and down and separate for being divided into the blowing of the ring of tow in described ring blowing spinning cooling device, upper layer circular air blow tilts upward blowout, lower layer circular air blow is main body, from ring Blowing drum level blowout, its at the middle and upper levels ring blowing temperature and temperature lower than lower layer circular air blow;
D, the tow after oiling is carried out pre-network by path and silk door, then the cold roller of tow, hot-rolling are carried out drawing-off, the tow after drawing-off is added network, then tow is imported mound bobbins and carry out high-speed winding and become cylinder;
E, after the assay was approved, polyamide fibre 6 fiber to be packed.
2. the production method of nylon-6 fiber according to claim 1, it is characterized in that: described step c at the middle and upper levels ring blowing temperature 17.5 ~ 19.5 DEG C, speed is 0.4 ~ 0.5m/s, humidity 65% ~ 78%, lower layer circular air blow temperature 18 ~ 20 DEG C, speed are 0.4 ~ 0.5m/s, humidity 67% ~ 80%.
3. the production method of nylon-6 fiber according to claim 2, it is characterized in that: in described step a, the thermal treatment zone of screw extruder is six, its temperature is 260 ~ 262 DEG C, a district, 265 ~ 268 DEG C, 2nd district, 265 ~ 268 DEG C, 3rd district, 265 ~ 268 DEG C, 4th district, 265 ~ 268 DEG C, 5th district, 265 ~ 268 DEG C, 6th district, and melt pressure is 11.5 ~ 12.5Mpa; In described step b, the temperature of spinning manifold is 265 ~ 270 DEG C; In described steps d, drawing-off first adopts two cold rollers to carry out drawing-off, and rear employing two hot-rollings carry out drawing-off, and heat roller temperature is 150 ~ 170 DEG C, and drawing-off speed is 1.1; Winding speed is 4000 ~ 4200m/min.
4. the production method of the nylon-6 fiber according to claim 1 or 2 or 3, it is characterized in that the ring blowing spinning cooling device adopted in step c comprises ring blowing device (101) and air-conditioner set (102), described ring blowing device (101) comprises frame (103), lift cylinders (104), elevating lever (105), the first blast pipe (106), the second blast pipe (107), the first urceolus (108), the second urceolus (109), the 3rd urceolus (110), guiding air duct (111), ring Blowing drum (112) and airfast inner core (113), described guiding air duct (111), ring Blowing drum (112) and inner core (113) set gradually from top to bottom and communicate, described lift cylinders (104) and elevating lever (105) frame (103) are located in frame (103), first blast pipe (106) and the second blast pipe (107) are also located in frame (103), and the first blast pipe (106) and the second blast pipe (107) are all provided with deformation section (114) and control valve (115), described second urceolus (109) is connected to the first urceolus (108) below, described 3rd urceolus (110) is connected to the second urceolus (109) below, the piston rod of described lift cylinders (104) is all connected with described 3rd urceolus (110) bottom with elevating lever (105) top, described first urceolus (108) inner side is provided with described guiding air duct (111), described guiding air duct (111) is covered with the oblique through hole (154) of drying obliquely, from oblique through hole (154), blowout is upper layer circular air blow, described ring Blowing drum (112) is positioned at described second urceolus (109), the wind blown out from ring Blowing drum (112) is described lower layer circular air blow, and described inner core (113) is positioned at described 3rd urceolus (110) and bottom exceeds described 3rd urceolus (110), region between described first urceolus (108) and guiding air duct (111) is the first ring-shaped cavity (116), region between described second urceolus (109) and ring Blowing drum (112) is the second ring-shaped cavity (117), region between described 3rd urceolus (110) and inner core (113) is the 3rd ring-shaped cavity (118), described first ring-shaped cavity (116) is not communicated with the second ring-shaped cavity (117), described second ring-shaped cavity (117) is communicated with the 3rd ring-shaped cavity (118), described first blast pipe (106) is connected to the 3rd urceolus (110) and goes up and communicate with described second ring-shaped cavity (117), described second blast pipe (107) is connected to the first urceolus (108) and goes up and communicate with described first ring-shaped cavity (116), the retainer ring (119) being covered with through hole is provided with in the second urceolus (109) bottom, described ring Blowing drum (112) bottom is connected on retainer ring (119), ring-type mesh sheet (120) is accompanied between described second urceolus (109) and the 3rd urceolus (110), be provided with ring-type homogenating plate (121) in described first ring-shaped cavity (116), described ring-type homogenating plate (121) be covered with the first equal air holes (122), described air-conditioner set (102) comprises fresh wind tube (131), backwind tube (132), delivery pipe (133), return fan (134), return air spray chamber (135), drain valve (136), new air-valve (137), coarse filter one (138), coarse filter two (139), front-mounted heating device (140), preposition surface cooler (141), first spray chamber (142), second spray chamber (143), first rearmounted surface cooler (144), second rearmounted surface cooler (145), first rearmounted heater (146), second rearmounted heater (147), first pressure fan (148), second pressure fan (149), first fine filter (150), second fine filter (151), first air outlet (152) and the second air outlet (153), described fresh wind tube (131), coarse filter one (138), coarse filter two (139), front-mounted heating device (140), preposition surface cooler (141) connects successively, new air-valve (137) is located on fresh wind tube (131), described backwind tube (132) is connected with fresh wind tube (131), described return fan (134) and return air spray chamber (135) are located on backwind tube (132), described delivery pipe (133) is connected with backwind tube (132), described drain valve (136) is located on delivery pipe (133), described preposition surface cooler (141) connects two branch roads below, wherein a branch road is provided with the first spray chamber (142) successively, first rearmounted surface cooler (144), first rearmounted heater (146), first pressure fan (148) and the first air outlet (152), an other branch road is provided with the second spray chamber (143) successively, second rearmounted surface cooler (145), second rearmounted heater (147), second pressure fan (149) and the second air outlet (153), described first air outlet (152) communicates with first blast pipe (106) of ring blowing device (101), and described second air outlet (153) communicates with second blast pipe (107) of ring blowing device (101).
5. the production method of nylon-6 fiber according to claim 4, it is characterized in that also being provided with annular fan cover (123) in described first urceolus (108), the undergauge section (124) at described annular fan cover (123) top is connected on the first urceolus (108) by bearing (125), the ring segment (126) of annular fan cover (123) bottom is covered with the second equal air holes (129), ring segment (126) and the ring-type homogenating plate (121) of annular fan cover (123) bottom are arranged side by side, the undergauge section (124) at described annular fan cover (123) top exposes the first urceolus (108) upper end and undergauge section (124) is provided with gear (127).
6. the production method of nylon-6 fiber according to claim 5, it is characterized in that described gear (127) and drives the stepper motor of its rotating (128) to be in transmission connection, stepper motor (128) is controlled by controller (130), wherein: the described first equal air holes (122) and the second equal their registration of air holes (129) are X, controller (130) utilizes control step motor (128) to rotate the air quantity regulating the size of registration X and then control to enter guiding air duct (111).
7. the production method of nylon-6 fiber according to claim 6, it is characterized in that being provided with the first point for measuring temperature (155) in described first ring-shaped cavity (116), the second point for measuring temperature (156) is provided with in the second ring-shaped cavity (117), it is T1 that described first point for measuring temperature records temperature, it is T2 that second point for measuring temperature records temperature, T1*a+ T2*b is as the final value of feedback TF measured, in controller (130), standard value TB is set, TF increases the value of registration X when being greater than TB, reduce the value of registration X when TF is less than TB.
8. the production method of nylon-6 fiber according to claim 7, is characterized in that described second spray chamber (143) adopts chilled water spray.
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| CN105040131A (en) * | 2015-09-10 | 2015-11-11 | 浙江宝莲纤维科技有限公司 | Spinning channel system |
| CN105386140A (en) * | 2015-12-29 | 2016-03-09 | 重庆市大通茂纺织科技有限公司 | Chemical fiber circular blow cooling method |
| CN109112648A (en) * | 2017-06-23 | 2019-01-01 | 江苏天地化纤有限公司 | A kind of tangent line air inlet type cooling device in spinning |
| CN110512293A (en) * | 2019-08-22 | 2019-11-29 | 安徽天瑞塑业有限公司 | A kind of nylon yarn wire drawing production cooling device of environmental protection |
| CN113802194A (en) * | 2021-09-17 | 2021-12-17 | 宁波天诚化纤有限公司 | Polypropylene polyethylene composite fiber filamentation equipment |
| CN113846387A (en) * | 2021-09-17 | 2021-12-28 | 扬州天富龙科技纤维有限公司 | Preparation process of waste cloth head foam spun monofilament 100D black polyester staple fiber |
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| CN104805513B (en) | 2017-02-01 |
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Effective date of registration: 20161221 Address after: 464000 Guangshan, Henan province Guandu River Industrial Zone, No. Aviation Road, No. 1 Applicant after: GUANGSHAN QUNLI CHEMICAL FIBRE CO.,LTD. Address before: Guali town Xiaoshan District Hangzhou city 311243 dew Ting Cun Zhejiang province Zhejiang Meisibang Chemical Fiber Co. Ltd. Applicant before: ZHEJIANG MESBON CHEMICAL FIBRE Ltd. |
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