CN106435784A

CN106435784A - Forming method of polymer fiber shape using melt spinning with negative pressure

Info

Publication number: CN106435784A
Application number: CN201611004295.5A
Authority: CN
Inventors: 吉鹏; 王华平; 王知言; 王朝生; 李建武; 江振林; 陈向玲
Original assignee: Donghua University
Current assignee: Jiangsu Deli Chemical Fiber Co Ltd
Priority date: 2016-11-15
Filing date: 2016-11-15
Publication date: 2017-02-22
Anticipated expiration: 2036-11-15
Also published as: WO2018090369A1; CN106435784B

Abstract

The invention relates to a forming method of polymer fiber shape using melt spinning with negative pressure. The melt polymer is extruded from the spinning micropore, then passes through a slow cooling process to generate primary fiber which in the afterwards accepts a negative pressure cooling process and a natural cooling process in sequence. The negative pressure cooling refers to the cooling process under a negative pressure environment. The negative environment refers to the sealed environment with the constant pressure between 0.001 and 0.01MPa and the constant temperature between 5 and 105 DEG C. The inside of the environment with constant pressure and temperature is aerial atmosphere. The method makes a breakthrough to the problems such as the uneven cooling of fibers caused by the circular blow, side blow under constant temperature and pressure epitomized by the traditional melt spinning technology, achieves the complete and even cooling of fibers. At the same time the fiber crystallization performance can be regulated by adjusting the temperature of the environment with constant temperature and pressure to obviously enhance the fiber quality. The air resistance in the spinning process can be regulated by adjusting the pressure of the environment with constant temperature and pressure to enhance the speed and processing efficiency of the melt spinning.

Description

A kind of polymer fiber negative pressure melt spinning manufacturing process

Technical field

The invention belongs to melt spinning field, it is related to a kind of polymer fiber negative pressure melt spinning manufacturing process.

Background technology

Melt spinning is the most efficiently to dominate processing technology in synthetic fibers, melt spinning theory be melt spinning science with The research on the core of engineering.Fiber is ejected into winding shaping from spinneret micropore and mainly experiences slow cooling area, blowing area, natural cooling Area.Wherein blowing area is to ensure that the important step of fiber cooling procedure, contains the field of force, temperature field, velocity field etc..Blowing area is It is the research of spinning kineticses in spinning process, and the development of orientation, crystalline texture is that spinning is theoretical with the research of Evolution Mechanism The important content of research.The area of blowing at present has primarily formed cross air blasting, the type of cooling of ring blowing.Fiber is in the cooling in blowing area Effect is directly connected to fiber quality traits.

Chinese patent CN103952782A discloses a kind of long filament cross air blowing device and its blowing technique.This device has Manifold, oiling device and coiler device, manifold bottom is provided with spinneret, is provided with cross air blowing device below spinneret, described Cross air blowing device includes air-cooler, and air-cooler is connected with ajutage and rectification air channel, is provided between ajutage and rectification air channel Filter and volume damper.The wind speed of side-blown air cooling is uniform, it is possible to increase spinning quality；It is provided with side-blown windshield plate, by side The wind direction of hair-dryer intercepts and is decomposed, and makes the direction of wind unanimous on the whole with the tow direction of motion, decreases side-blown blower fan pair The interference of tow.

Chinese patent CN103820868B discloses a kind of ring blowing device producing super fine denier, high-quality spinning, including Spinning manifold, is connected with ring blow box below spinning manifold, being flexible coupling below ring blow box has porous cowling panel, porous cowling panel Lower section is provided with air-valve.Ring blowing wind speed uniformly, is tested by actual production, produces after installing porous cowling panel additional in ring blowing device The AAA of super fine denier product leads and rises to 90.1% by original 88.3%, the quality of the quality of product, especially super fine denier product Have increased significantly.Chinese patent CN102199796B discloses a kind of adjustable circular air blow cooling system, in ring blowing High-precision pressure sensor is all equipped in the static-pressure chamber of device and air duct storehouse, installs autocontrol valve, whole production line at blast pipe additional Only controlled by a computer, can be achieved with automatic linkage and adjust blast, and design ring blow head adjustable circular blowing device, at any time Ensure stablizing of air duct storehouse blast and air quantity, maximum ensure that product quality.

No matter however, being cross air blasting or ring wind quenching mode all cannot avoid the upset that fibrous airstream is formed to lead to Occur cooling insufficient, uniform in cooling procedure.Though ring blowing compares, cross air blasting can ensure fiber to a certain extent Cooling effect, in super fine denier, fine count fiber exploitation, the index of quality gets a promotion, but to fiber and air in fiber cooling procedure Boundary layer lacks system design.Existing quenching mode can be broken through become melt spinning forming technique and develop further Key.

Content of the invention

Present invention aims to existing melt spinning shapes the deficiency of cooling technology, substituted using lost pressure cooling and pass The side-blown cooling of system and ring blow cooling, realize abundant in constant temperature and pressure enclosed environment, the uniform cooling of as-spun fibre, reduce simultaneously The impact to spinning speed for the air drag in cooling procedure, lifting spinning process velocity and efficiency.

For reaching above-mentioned purpose, the technical solution used in the present invention is：

A kind of polymer fiber negative pressure melt spinning manufacturing process, polymer melt first passes around after spinneret orifice extrusion Slow cooling forms as-spun fibre, and then as-spun fibre carries out lost pressure cooling and natural cooling successively；

Described lost pressure cooling refers in subnormal ambient cooling, described subnormal ambient be finger pressure be 0.001～ 0.01MPa, temperature are 5～105 DEG C of constant temperature and pressure enclosed environment, are air atmosphere in described constant temperature and pressure enclosed environment.

As preferred technical scheme：

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, the sky of described constant temperature and pressure enclosed environment Between highly be 1～2m.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, described subnormal ambient is closed by maintenance In environment, the device of the constant temperature and pressure of atmosphere is realized, and the described device maintaining the constant temperature and pressure of atmosphere in enclosed environment includes closing Cavity, air inlet, gas outlet and air pump, wherein air inlet are located at the horizontal both sides of closed cavity bottom, and gas outlet is located at closing The top of cavity, air-flow pumps into via air pump, flows out from gas outlet after air inlet enters closed cavity；Described closed cavity bag Include upper sealing plate and lower shrouding, the center of upper sealing plate and lower shrouding has wire through hole.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, described polymer is polyester or polyamides Amine.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, described polyester is PET (poly- terephthaldehyde Sour glycol ester), PTT (PTT) or PBT (polybutylene terephthalate (PBT)), described polyamide is Polyamide 6, polyamide 66, polyamide 1010 or polyamide 56.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, described spinneret orifice is circular hole and abnormity Hole, described irregularly-shaped hole is triangular form, trilobal cross, hollow type, platypelloid type, cross, rich font, " 8 " font, Y-shaped or " H " type Micropore.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, described slow cooling refers at 20～30 DEG C Slow cooling in air atmosphere, the spatial altitude in slow cooling region is 5～15cm.

A kind of polymer fiber negative pressure melt spinning manufacturing process as above, as-spun fibre is through lost pressure cooling and nature Carry out boundling after cooling, oil and wind, concrete spinning technique is as follows：

Polyester POY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 5000～10000m/min, collects spot fiber Speed be 4000～5000m/min, draft temperature is 60～80 DEG C, and total stretching ratio is 1.2～2.0, and winding speed is 5000～10000m/min；

Polyester DTY silk：Polyester POY silk through 8 hours balance after, respectively through first roller, the Ith hot tank, coldplate, PU disk Formula scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller coiling and molding, Make polyester DTY silk, wherein the linear velocity of first roller is 200～600m/min, the linear velocity of the second roller is 500～ 600m/min, the linear velocity of the 3rd roller is 300～600m/min, and the linear velocity of Wound-up roller is 400～700m/min, drawing-off Than for 1.1～1.8, PU disc type false twisting D/Y than for 1.2～2.5；

Polyester HOY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 15000～20000m/min, collects spot fiber Speed be 6000～8000m/min, winding speed be 15000～20000m/min；

Polyester FDY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 12000～15000m/min, collects spot fiber Speed be 5000～7000m/min m/min, the speed of hot-rolling GR1 is 4000～6000m/min, and temperature is 80～110 DEG C, The speed of hot-rolling GR2 is 5000～7000m/min, and temperature is 115～135 DEG C, and winding speed is 12000～15000m/min；

Fypro：Spinning temperature is 240～300 DEG C, and spinning speed is 8000～20000m/min, collects spot fiber Speed be 6000～8000m/min, draft temperature is 100～180 DEG C, and draw ratio is 1.3～3.0, and winding speed is 8000～20000m/min.

In conventional melt spinning process, fiber carries out sufficiently cool, blowing through blowing area after the slow cooling of slow cooling area again The blowing in area includes cross air blasting with ring two kinds of forms of blowing, and cross air blasting became chemical fibre cooling within considerable time in past Major way, but it is as chemical fibre towards when developing in the directions such as low-titer, abnormity, traditional cross air blasting cannot meet very well The cooling forming of tow, ring blowing is the development further of cross air blasting, especially to the fine-denier of exploitation high-quality, profiled filament product Serve the effect of key.But traditional open type quenching mode, is by the blowing of certain speed directly and fiber Contact, by accelerating air flow, improves the rate of heat exchange of air and fiber, increases heat exchange amount, realize the cooling of fiber, Vividly describe into " electric fan " formula cooling, during open type quenching internal-and external diameter distribution the wind speed suffered by tow with Wind-warm syndrome produces difference, leads to inhomogeneous cooling one, the quality of impact fiber.On the whole, no matter be cross air blasting or ring blowing cold But mode all cannot avoid the upset that fibrous airstream is formed to lead to occur cooling insufficient, uniform in cooling procedure.

A kind of present invention polymer fiber negative pressure melt spinning manufacturing process, polyester fondant from spinneret orifice extrusion after first Form as-spun fibre through slow cooling, then as-spun fibre carries out lost pressure cooling and natural cooling successively, and lost pressure cooling is in pressure Carry out in the constant temperature and pressure enclosed environment for 0.001～0.01MPa, temperature being 5～105 DEG C.The present invention adopts closed nothing Airflow disturbance lost pressure cooling, is different from quenching mode completely, by uniform temperature air-flow, closed cavity environment is carried out Regulation and control, carry out heat exchange, realize the cooling of fiber, without air-flow, fiber is carried out between closed cavity environment and fiber Directly contact cools down, and fiber can be cooled down with Vivid analogy for " air-conditioning " formula.By having the envelope of the features such as constant pressure and temperature Closed chamber body cools down to fiber, and tow is completely under identical cooler environment, and homogeneity can be guaranteed, and overcomes biography The shortcoming during system open type quenching, fiber quality decline being caused due to fiber inhomogeneous cooling one.

Further, since fiber cooling is carried out under conditions of pressure is less than atmospheric pressure, it is subject to during fiber movement Air drag reduce substantially, thus leading to fiber process speed to be obviously improved, improve the efficiency of production and processing.

Beneficial effect：

1) the polymer fiber negative pressure melt spinning manufacturing process of the present invention, breaches existing cross air blasting or ring blowing is cold But mode, it is to avoid because the adverse effect to fiber forming process for the air agitation, realizes abundant, the uniform cooling of fiber, especially suitable Close fine-denier, the forming of superfine Denier fibre.

2) present invention can be by the temperature adjusting fiber crystalline rate of air-flow in regulating thermostatic constant voltage enclosed environment and knot Brilliant process, realizes the regulation and control of the mechanical property to fiber.

3) present invention can be real by the resistance of fiber in the air pressure controlling spinning process of regulating thermostatic constant voltage enclosed environment The now regulation and control to melt spinning speed.

4) adopt the polymer fiber negative pressure melt spinning manufacturing process of the present invention it is achieved that the quick cooling of fiber, plus The fast speed of production of spinning moulding processing, improves efficiency.

Specific embodiment

With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate this Bright rather than limit the scope of the present invention.In addition, it is to be understood that after having read the content of present invention instruction, art technology Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited Fixed scope.

Embodiment 1

A kind of PET POY silk negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 10000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after circular hole spinneret orifice extrusion Refer to Slow cooling in 20 DEG C of air atmosphere, the spatial altitude in slow cooling region is 5cm；

Then as-spun fibre pressure be 0.001MPa, temperature be 105 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure Cooling, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom The horizontal both sides in portion, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity Flow out from gas outlet, closed cavity includes upper sealing plate and lower shrouding, the center of upper sealing plate and lower shrouding has wire and leads to Hole, the spatial altitude of constant temperature and pressure enclosed environment is 1m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PET POY silk, the speed of collection spot fiber For 5000m/min, draft temperature is 60 DEG C, and total stretching ratio is 2.0, and winding speed is 10000m/min.

Comparative example 1

A kind of PET POY silk normal pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 2500m/min, PET melt thread is formed as-spun fibre through slow cooling after circular hole spinneret orifice extrusion, slow cooling is Refer to Slow cooling in 20 DEG C of air atmosphere, the spatial altitude in slow cooling region is 5cm；Then ring is adopted to dry to quenching The fiber in area is cooled down, and the spatial altitude in quenching area is 1m；Carry out after last natural cooling boundling, oil, stretch and Winding obtains PET POY silk, and as 1000m/min, draft temperature is 60 DEG C to the speed integrating spot fiber, and total stretching ratio is 2.0, Winding speed is 2500m/min.

Embodiment 1 and comparative example 1 are contrasted and can be seen that under the conditions of keeping other technological parameter identicals, using negative The pressure type of cooling is capable of being obviously improved of spinning speed, illustrates more have than cooling down using ring blowing mode using lost pressure cooling Beneficial to the speed of production of high spinning processing and forming, improve production efficiency.

Embodiment 2

A kind of PTT POY silk negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 9000m/min, PTT melt stream is formed as-spun fibre, slow cooling through slow cooling after triangular form spinneret orifice extrusion Refer to Slow cooling in 21 DEG C of air atmosphere, the spatial altitude in slow cooling region is 6cm；

Then as-spun fibre pressure be 0.002MPa, temperature be 100 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure Cooling, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom The horizontal both sides in portion, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity Flow out from gas outlet, closed cavity includes upper sealing plate and lower shrouding, the center of upper sealing plate and lower shrouding has wire and leads to Hole, the spatial altitude of constant temperature and pressure enclosed environment is 1.1m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PTT POY silk, the speed of collection spot fiber For 4500m/min, draft temperature is 65 DEG C, and total stretching ratio is 2.0, and winding speed is 9000m/min.

Embodiment 3

A kind of PBT POY silk negative pressure melt spinning manufacturing process, is 285 DEG C in spinning temperature first, and spinning speed is Under conditions of 8000m/min, PBT melt stream is formed as-spun fibre, slow cooling through slow cooling after trilobal cross spinneret orifice extrusion Refer to Slow cooling in 22 DEG C of air atmosphere, the spatial altitude in slow cooling region is 8cm；

Then as-spun fibre pressure be 0.003MPa, temperature be 90 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.2m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PBT POY silk, the speed of collection spot fiber For 5000m/min, draft temperature is 70 DEG C, and total stretching ratio is 1.6, and winding speed is 8000m/min.

Embodiment 4

A kind of PET POY silk negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature first, and spinning speed is Under conditions of 6000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after hollow type spinneret orifice extrusion Refer to Slow cooling in 23 DEG C of air atmosphere, the spatial altitude in slow cooling region is 9cm；

Then as-spun fibre pressure be 0.005MPa, temperature be 80 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.3m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PET POY silk, the speed of collection spot fiber For 4200m/min, draft temperature is 75 DEG C, and total stretching ratio is 1.4, and winding speed is 6000m/min.

Embodiment 5

A kind of PBT POY silk negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 5000m/min, PBT melt stream is formed as-spun fibre, slow cooling through slow cooling after platypelloid type spinneret orifice extrusion Refer to Slow cooling in 24 DEG C of air atmosphere, the spatial altitude in slow cooling region is 10cm；

Then as-spun fibre pressure be 0.006MPa, temperature be 70 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.4m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PBT POY silk, the speed of collection spot fiber For 4000m/min, draft temperature is 80 DEG C, and total stretching ratio is 1.2, and winding speed is 5000m/min.

Embodiment 6

A kind of PTT DTY silk negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 10000m/min, PTT melt stream is formed as-spun fibre through slow cooling after cross spinneret orifice is extruded, delay Cold refer to Slow cooling in 25 DEG C of air atmosphere, the spatial altitude in slow cooling region is 11cm；

Then as-spun fibre pressure be 0.007MPa, temperature be 60 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.5m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Then carry out boundling, oil, stretch and winding obtains PTT POY silk, the speed integrating spot fiber is as 5000m/ Min, draft temperature is 60 DEG C, and total stretching ratio is 2.0, and winding speed is 10000m/min；

After last natural cooling by PTT POY silk after 8 hours balances, respectively through first roller, the Ith hot tank, cooling Plate, PU disc type scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller volume Around shaping, make PTT DTY silk, the wherein linear velocity of first roller is 200m/min, the linear velocity of the second roller is 500m/ Min, the linear velocity of the 3rd roller is 300m/min, and the linear velocity of Wound-up roller is 400m/min, and draw ratio is 1.1, PU disc type False twisting D/Y is than for 1.2.

Embodiment 7

A kind of PTT DTY silk negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 8000m/min, PTT melt stream is formed as-spun fibre, slow cooling through slow cooling after rich font spinneret orifice is extruded Refer to Slow cooling in 26 DEG C of air atmosphere, the spatial altitude in slow cooling region is 12cm；

Then as-spun fibre pressure be 0.008MPa, temperature be 50 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.6m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Then carry out boundling, oil, stretch and winding obtains PTT POY silk, the speed integrating spot fiber is as 4800m/ Min, draft temperature is 65 DEG C, and total stretching ratio is 1.8, and winding speed is 8000m/min；

After last natural cooling by PTT POY silk after 8 hours balances, respectively through first roller, the Ith hot tank, cooling Plate, PU disc type scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller volume Around shaping, make PTT DTY silk, the wherein linear velocity of first roller is 300m/min, the linear velocity of the second roller is 520m/ Min, the linear velocity of the 3rd roller is 400m/min, and the linear velocity of Wound-up roller is 500m/min, and draw ratio is 1.3, PU disc type False twisting D/Y is than for 1.5.

Embodiment 8

A kind of PBT DTY silk negative pressure melt spinning manufacturing process, is 288 DEG C in spinning temperature first, and spinning speed is Under conditions of 7000m/min, PBT melt stream is formed as-spun fibre through slow cooling after " 8 " font spinneret orifice extrusion, delay Cold refer to Slow cooling in 27 DEG C of air atmosphere, the spatial altitude in slow cooling region is 13cm；

Then as-spun fibre pressure be 0.009MPa, temperature be 30 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.8m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Then carry out boundling, oil, stretch and winding obtains PBT POY silk, the speed integrating spot fiber is as 4600m/ Min, draft temperature is 70 DEG C, and total stretching ratio is 1.5, and winding speed is 7000m/min；

After last natural cooling by PBT POY silk after 8 hours balances, respectively through first roller, the Ith hot tank, cooling Plate, PU disc type scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller volume Around shaping, make PBT DTY silk, the wherein linear velocity of first roller is 400m/min, the linear velocity of the second roller is 550m/ Min, the linear velocity of the 3rd roller is 500m/min, and the linear velocity of Wound-up roller is 500m/min, and draw ratio is 1.5, PU disc type False twisting D/Y is than for 1.8.

Embodiment 9

A kind of PET DTY silk negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature first, and spinning speed is Under conditions of 6000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after Y-shaped spinneret orifice extrusion Refer to Slow cooling in 28 DEG C of air atmosphere, the spatial altitude in slow cooling region is 14cm；

Then as-spun fibre pressure be 0.01MPa, temperature be 20 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.9m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Then carry out boundling, oil, stretch and winding obtains PET POY silk, the speed integrating spot fiber is as 4500m/ Min, draft temperature is 75 DEG C, and total stretching ratio is 1.3, and winding speed is 6000m/min；

After last natural cooling by PET POY silk after 8 hours balances, respectively through first roller, the Ith hot tank, cooling Plate, PU disc type scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller volume Around shaping, make PET DTY silk, the wherein linear velocity of first roller is 500m/min, the linear velocity of the second roller is 580m/ Min, the linear velocity of the 3rd roller is 500m/min, and the linear velocity of Wound-up roller is 600m/min, and draw ratio is 1.6, PU disc type False twisting D/Y is than for 2.0.

Embodiment 10

A kind of PET DTY silk negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 5000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after " H " type spinneret orifice extrusion Refer to Slow cooling in 30 DEG C of air atmosphere, the spatial altitude in slow cooling region is 15cm；

Then as-spun fibre pressure be 0.01MPa, temperature be 5 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 2m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Then carry out boundling, oil, stretch and winding obtains PET POY silk, the speed integrating spot fiber is as 4000m/ Min, draft temperature is 80 DEG C, and total stretching ratio is 1.2, and winding speed is 5000m/min；

After last natural cooling by PET POY silk after 8 hours balances, respectively through first roller, the Ith hot tank, cooling Plate, PU disc type scroll tube, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller volume Around shaping, make PET DTY silk, the wherein linear velocity of first roller is 600m/min, the linear velocity of the second roller is 600m/ Min, the linear velocity of the 3rd roller is 600m/min, and the linear velocity of Wound-up roller is 700m/min, and draw ratio is 1.8, PU disc type False twisting D/Y is than for 2.5.

Embodiment 11

A kind of PET HOY silk negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 20000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after circular hole spinneret orifice extrusion Refer to Slow cooling in 20 DEG C of air atmosphere, the spatial altitude in slow cooling region is 5cm；

Carry out boundling after last natural cooling, oil and winding obtains PET HOY silk, the speed of collection spot fiber is 8000m/min, winding speed is 20000m/min.

Embodiment 12

A kind of PET HOY silk negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 19000m/min, PET melt thread is formed as-spun fibre through slow cooling after triangular form spinneret orifice extrusion, delay Cold refer to Slow cooling in 21 DEG C of air atmosphere, the spatial altitude in slow cooling region is 6cm；

Carry out boundling after last natural cooling, oil and winding obtains PET HOY silk, the speed of collection spot fiber is 7000m/min, winding speed is 19000m/min.

Embodiment 13

A kind of PTT HOY silk negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 18000m/min, PTT melt stream is formed as-spun fibre through slow cooling after trilobal cross spinneret orifice extrusion, delay Cold refer to Slow cooling in 22 DEG C of air atmosphere, the spatial altitude in slow cooling region is 8cm；

Carry out boundling after last natural cooling, oil and winding obtains PTT HOY silk, the speed of collection spot fiber is 6500m/min, winding speed is 18000m/min.

Embodiment 14

A kind of PBT HOY silk negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature first, and spinning speed is Under conditions of 16000m/min, PBT melt stream is formed as-spun fibre through slow cooling after hollow type spinneret orifice extrusion, delay Cold refer to Slow cooling in 23 DEG C of air atmosphere, the spatial altitude in slow cooling region is 10cm；

Then as-spun fibre pressure be 0.004MPa, temperature be 75 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.3m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil and winding obtains PBT HOY silk, the speed of collection spot fiber is 6200m/min, winding speed is 16000m/min.

Embodiment 15

A kind of PBT HOY silk negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 15000m/min, PBT melt stream is formed as-spun fibre through slow cooling after platypelloid type spinneret orifice extrusion, delay Cold refer to Slow cooling in 24 DEG C of air atmosphere, the spatial altitude in slow cooling region is 10cm；

Then as-spun fibre pressure be 0.005MPa, temperature be 60 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.4m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil and winding obtains PBT HOY silk, the speed of collection spot fiber is 6000m/min, winding speed is 15000m/min.

Embodiment 16

A kind of PTT FDY silk negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 15000m/min, PTT melt stream is formed as-spun fibre through slow cooling after cross spinneret orifice is extruded, delay Cold refer to Slow cooling in 25 DEG C of air atmosphere, the spatial altitude in slow cooling region is 11cm；

Then as-spun fibre pressure be 0.006MPa, temperature be 50 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.5m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PTT FDY silk, the speed of collection spot fiber For 7000m/min, the speed of hot-rolling GR1 is 6000m/min, and temperature is 80 DEG C, and the speed of hot-rolling GR2 is 7000m/min, temperature For 115 DEG C, winding speed is 15000m/min.

Embodiment 17

A kind of PET FDY silk negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 14000m/min, PET melt thread is formed as-spun fibre through slow cooling after rich font spinneret orifice is extruded, delay Cold refer to Slow cooling in 26 DEG C of air atmosphere, the spatial altitude in slow cooling region is 12cm；

Then as-spun fibre pressure be 0.008MPa, temperature be 30 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.6m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PET FDY silk, the speed of collection spot fiber For 6500m/min, the speed of hot-rolling GR1 is 5000m/min, and temperature is 90 DEG C, and the speed of hot-rolling GR2 is 6500m/min, temperature For 120 DEG C, winding speed is 14000m/min.

Embodiment 18

A kind of PBT FDY silk negative pressure melt spinning manufacturing process, is 285 DEG C in spinning temperature first, and spinning speed is Under conditions of 13500m/min, PBT melt stream is formed as-spun fibre through slow cooling after " 8 " font spinneret orifice extrusion, delay Cold refer to Slow cooling in 28 DEG C of air atmosphere, the spatial altitude in slow cooling region is 13cm；

Then as-spun fibre pressure be 0.008MPa, temperature be 20 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.8m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PBT FDY silk, the speed of collection spot fiber For 6000m/min, the speed of hot-rolling GR1 is 4500m/min, and temperature is 100 DEG C, and the speed of hot-rolling GR2 is 6000m/min, temperature Spend for 125 DEG C, winding speed is 13500m/min.

Embodiment 19

A kind of PTT FDY silk negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature first, and spinning speed is Under conditions of 13000m/min, PTT melt stream is formed as-spun fibre, slow cooling through slow cooling after Y-shaped spinneret orifice extrusion Refer to Slow cooling in 29 DEG C of air atmosphere, the spatial altitude in slow cooling region is 14cm；

Then as-spun fibre pressure be 0.009MPa, temperature be 10 DEG C of constant temperature and pressure enclosed environment in carry out negative pressure cold But, the environment of lost pressure cooling passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, and maintains gas in enclosed environment The device of the constant temperature and pressure of atmosphere includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at closed cavity bottom Horizontal both sides, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, after air inlet enters closed cavity from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole, The spatial altitude of constant temperature and pressure enclosed environment is 1.9m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PTT FDY silk, the speed of collection spot fiber For 5500m/min, the speed of hot-rolling GR1 is 4200m/min, and temperature is 100 DEG C, and the speed of hot-rolling GR2 is 5500m/min, temperature Spend for 130 DEG C, winding speed is 13000m/min.

Embodiment 20

A kind of PET FDY silk negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 12000m/min, PET melt thread is formed as-spun fibre, slow cooling through slow cooling after " H " type spinneret orifice extrusion Refer to Slow cooling in 30 DEG C of air atmosphere, the spatial altitude in slow cooling region is 15cm；

Carry out boundling after last natural cooling, oil, stretch and winding obtains PET FDY silk, the speed of collection spot fiber For 5000m/min, the speed of hot-rolling GR1 is 4000m/min, and temperature is 110 DEG C, and the speed of hot-rolling GR2 is 5000m/min, temperature Spend for 135 DEG C, winding speed is 12000m/min.

Embodiment 21

A kind of daiamid-6 fiber negative pressure melt spinning manufacturing process, is 240 DEG C in spinning temperature first, and spinning speed is Under the conditions of 20000m/min, polyamide 6 melt stream is formed as-spun fibre through slow cooling after circular hole spinneret orifice extrusion, delay Cold refer to Slow cooling in 20 DEG C of air atmosphere, the spatial altitude in slow cooling region is 5cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 8000m/min, is drawn Stretch temperature and be 120 DEG C, draw ratio is 2.5, winding speed is 20000m/min.

Embodiment 22

A kind of daiamid-6 fiber negative pressure melt spinning manufacturing process, is 250 DEG C in spinning temperature first, and spinning speed is Under the conditions of 15000m/min, polyamide 6 melt stream is formed as-spun fibre through slow cooling after triangular form spinneret orifice extrusion, Slow cooling refers to Slow cooling in 21 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 6cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 7500m/min, is drawn Stretch temperature and be 130 DEG C, draw ratio is 2.0, winding speed is 15000m/min.

Embodiment 23

A kind of daiamid-6 fiber negative pressure melt spinning manufacturing process, is 250 DEG C in spinning temperature first, and spinning speed is Under the conditions of 12000m/min, polyamide 6 melt stream is formed as-spun fibre through slow cooling after trilobal cross spinneret orifice extrusion, Slow cooling refers to Slow cooling in 22 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 8cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6400m/min, is drawn Stretch temperature and be 140 DEG C, draw ratio is 1.9, winding speed is 12000m/min.

Embodiment 24

A kind of daiamid-6 fiber negative pressure melt spinning manufacturing process, is 260 DEG C in spinning temperature first, and spinning speed is Under the conditions of 10000m/min, polyamide 6 melt stream is formed as-spun fibre through slow cooling after hollow type spinneret orifice extrusion, Slow cooling refers to Slow cooling in 23 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 9cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6600m/min, is drawn Stretch temperature and be 160 DEG C, draw ratio is 1.5, winding speed is 10000m/min.

Embodiment 25

A kind of daiamid-6 fiber negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under the conditions of 8000m/min, polyamide 6 melt stream is formed as-spun fibre through slow cooling after platypelloid type spinneret orifice extrusion, delay Cold refer to Slow cooling in 24 DEG C of air atmosphere, the spatial altitude in slow cooling region is 10cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6000m/min, is drawn Stretch temperature and be 180 DEG C, draw ratio is 1.3, winding speed is 8000m/min.

Embodiment 26

A kind of Nylon66 negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature first, and spinning speed is Under conditions of 20000m/min, polyamide 66 melt stream is formed nascent fibre through slow cooling after cross spinneret orifice is extruded Dimension, slow cooling refers to Slow cooling in 25 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 11cm；

Embodiment 27

A kind of Nylon66 negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 15000m/min, polyamide 66 melt stream is formed nascent fibre through slow cooling after rich font spinneret orifice is extruded Dimension, slow cooling refers to Slow cooling in 26 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 12cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 7500m/min, is drawn Stretch temperature and be 140 DEG C, draw ratio is 2.0, winding speed is 15000m/min.

Embodiment 28

A kind of Nylon66 negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature first, and spinning speed is Under conditions of 12000m/min, polyamide 66 melt stream is formed nascent fibre through slow cooling after " 8 " font spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 27 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 13cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6400m/min, is drawn Stretch temperature and be 150 DEG C, draw ratio is 1.9, winding speed is 12000m/min.

Embodiment 29

A kind of Nylon66 negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature first, and spinning speed is Under conditions of 10000m/min, polyamide 66 melt stream is formed nascent fibre through slow cooling after Y-shaped spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 28 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 14cm；

Embodiment 30

A kind of Nylon66 negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 8000m/min, polyamide 66 melt stream is formed as-spun fibre through slow cooling after " H " type spinneret orifice extrusion, Slow cooling refers to Slow cooling in 30 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 15cm；

Embodiment 31

A kind of polyamide 1010 fiber negative pressure melt spinning manufacturing process, is 270 DEG C in spinning temperature, spinning speed first Form nascent fibre for polyamide 1010 melt stream under conditions of 20000m/min through slow cooling after circular hole spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 20 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 5cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 8000m/min, is drawn Stretch temperature and be 100 DEG C, draw ratio is 3.0, winding speed is 20000m/min.

Embodiment 32

A kind of polyamide 1010 fiber negative pressure melt spinning manufacturing process, is 280 DEG C in spinning temperature, spinning speed first Formed nascent after triangular form spinneret orifice extrusion through slow cooling for polyamide 1010 melt stream under conditions of 15000m/min Fiber, slow cooling refers to Slow cooling in 21 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 6cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 7500m/min, is drawn Stretch temperature and be 120 DEG C, draw ratio is 2.2, winding speed is 15000m/min.

Embodiment 33

A kind of polyamide 1010 fiber negative pressure melt spinning manufacturing process, is 290 DEG C in spinning temperature, spinning speed first Formed nascent after trilobal cross spinneret orifice extrusion through slow cooling for polyamide 1010 melt stream under conditions of 12000m/min Fiber, slow cooling refers to Slow cooling in 22 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 8cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6400m/min, is drawn Stretch temperature and be 140 DEG C, draw ratio is 2.0, winding speed is 12000m/min.

Embodiment 34

A kind of polyamide 1010 fiber negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature, spinning speed first Formed nascent after hollow type spinneret orifice extrusion through slow cooling for polyamide 1010 melt stream under conditions of 10000m/min Fiber, slow cooling refers to Slow cooling in 23 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 10cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6600m/min, is drawn Stretch temperature and be 150 DEG C, draw ratio is 1.8, winding speed is 10000m/min.

Embodiment 35

A kind of polyamide 1010 fiber negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature, spinning speed first Form nascent fibre for polyamide 1010 melt stream under conditions of 8000m/min through slow cooling after platypelloid type spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 24 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 10cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6000m/min, is drawn Stretch temperature and be 160 DEG C, draw ratio is 1.5, winding speed is 8000m/min.

Embodiment 36

A kind of polyamide 56 fiber negative pressure melt spinning manufacturing process, is 265 DEG C in spinning temperature first, and spinning speed is Under conditions of 20000m/min, polyamide 56 melt stream is formed nascent fibre through slow cooling after cross spinneret orifice is extruded Dimension, slow cooling refers to Slow cooling in 25 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 11cm；

Embodiment 37

A kind of polyamide 56 fiber negative pressure melt spinning manufacturing process, is 275 DEG C in spinning temperature first, and spinning speed is Under conditions of 18000m/min, polyamide 56 melt stream is formed nascent fibre through slow cooling after rich font spinneret orifice is extruded Dimension, slow cooling refers to Slow cooling in 26 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 12cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 7500m/min, is drawn Stretch temperature and be 130 DEG C, draw ratio is 2.0, winding speed is 18000m/min.

Embodiment 38

A kind of polyamide 56 fiber negative pressure melt spinning manufacturing process, is 285 DEG C in spinning temperature first, and spinning speed is Under conditions of 14000m/min, polyamide 56 melt stream is formed nascent fibre through slow cooling after " 8 " font spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 28 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 13cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 7000m/min, is drawn Stretch temperature and be 150 DEG C, draw ratio is 1.8, winding speed is 14000m/min.

Embodiment 39

A kind of polyamide 56 fiber negative pressure melt spinning manufacturing process, is 295 DEG C in spinning temperature first, and spinning speed is Under conditions of 10000m/min, polyamide 56 melt stream is formed nascent fibre through slow cooling after Y-shaped spinneret orifice extrusion Dimension, slow cooling refers to Slow cooling in 29 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 14cm；

Carry out boundling after last natural cooling, oil, stretch and wind, the speed integrating spot fiber, as 6500m/min, is drawn Stretch temperature and be 160 DEG C, draw ratio is 1.5, winding speed is 10000m/min.

Embodiment 40

A kind of polyamide 56 fiber negative pressure melt spinning manufacturing process, is 300 DEG C in spinning temperature first, and spinning speed is Under conditions of 8000m/min, polyamide 56 melt stream is formed as-spun fibre through slow cooling after " H " type spinneret orifice extrusion, Slow cooling refers to Slow cooling in 30 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 15cm；

Claims

1. a kind of polymer fiber negative pressure melt spinning manufacturing process, is characterized in that：Polymer melt is after spinneret orifice extrusion First pass around slow cooling and form as-spun fibre, then as-spun fibre carries out lost pressure cooling and natural cooling successively；

Described lost pressure cooling refers in subnormal ambient cooling, described subnormal ambient be finger pressure be 0.001～0.01MPa, temperature Spend the constant temperature and pressure enclosed environment for 5～105 DEG C, be air atmosphere in described constant temperature and pressure enclosed environment.

2. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that described perseverance The spatial altitude of warm constant voltage enclosed environment is 1～2m.

3. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that described bear Pressure ring border passes through to maintain the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, the described constant temperature maintaining atmosphere in enclosed environment The device of constant voltage includes closed cavity, air inlet, gas outlet and air pump, and wherein air inlet is located at the level two of closed cavity bottom Side, gas outlet is located at the top of closed cavity, and air-flow pumps into via air pump, from gas outlet stream after air inlet enters closed cavity Go out；Described closed cavity includes upper sealing plate and lower shrouding, and the center of upper sealing plate and lower shrouding has wire through hole.

4. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that described gather Compound is polyester or polyamide.

5. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 4 is it is characterised in that described gather Ester is PET, PTT or PBT, and described polyamide is polyamide 6, polyamide 66, polyamide 1010 or polyamide 56.

6. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that described spray Silk micropore be circular hole and irregularly-shaped hole, described irregularly-shaped hole be triangular form, trilobal cross, hollow type, platypelloid type, cross, rich font, " 8 " font, Y-shaped or " H " type micropore.

7. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that described delay Cold refer to Slow cooling in 20～30 DEG C of air atmosphere, the spatial altitude in slow cooling region is 5～15cm.

8. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1 is it is characterised in that come into being fine Dimension carries out boundling after lost pressure cooling and natural cooling, oils and wind, and concrete spinning technique is as follows：

Polyester POY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 5000～10000m/min, the speed of collection spot fiber To spend for 4000～5000m/min, draft temperature is 60～80 DEG C, total stretching ratio is 1.2～2.0, winding speed is 5000～ 10000m/min；

Polyester DTY silk：Polyester POY silk is after 8 hours balances, false through first roller, the Ith hot tank, coldplate, PU disc type respectively Twister, the second roller, network nozzle, the IIth hot tank, the 3rd roller and oil tanker, eventually pass Wound-up roller coiling and molding, make Polyester DTY silk, the wherein linear velocity of first roller are 200～600m/min, and the linear velocity of the second roller is 500～600m/ Min, the linear velocity of the 3rd roller is 300～600m/min, and the linear velocity of Wound-up roller is 400～700m/min, and draw ratio is 1.1～1.8, PU disc type false twisting D/Y is than for 1.2～2.5；

Polyester HOY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 15000～20000m/min, the speed of collection spot fiber Spend for 6000～8000m/min, winding speed is 15000～20000m/min；

Polyester FDY silk：Spinning temperature is 270～300 DEG C, and spinning speed is 12000～15000m/min, the speed of collection spot fiber Spend for 5000～7000m/min m/min, the speed of hot-rolling GR1 is 4000～6000m/min, and temperature is 80～110 DEG C, hot-rolling The speed of GR2 is 5000～7000m/min, and temperature is 115～135 DEG C, and winding speed is 12000～15000m/min；

Fypro：Spinning temperature is 240～300 DEG C, and spinning speed is 8000～20000m/min, the speed of collection spot fiber To spend for 6000～8000m/min, draft temperature is 100～180 DEG C, draw ratio is 1.3～3.0, winding speed is 8000～ 20000m/min.