CN106435784B

CN106435784B - A kind of polymer fiber negative pressure melt spinning manufacturing process

Info

Publication number: CN106435784B
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: 2018-07-17
Anticipated expiration: 2036-11-15
Also published as: WO2018090369A1; CN106435784A

Abstract

The present invention relates to a kind of polymer fiber negative pressure melt spinning manufacturing process, polymer melt first passes around slow cooling after spinneret orifice extrusion and forms as-spun fibre, and then as-spun fibre carries out lost pressure cooling and natural cooling successively；Lost pressure cooling refers to cooling in subnormal ambient, and subnormal ambient is the constant temperature and pressure enclosed environment that finger pressure is 0.001~0.01MPa, temperature is 5~105 DEG C, is air atmosphere in constant temperature and pressure enclosed environment.The present invention breaches ring under the fixed humiture of tradition and blows, caused by side-blown cooling melt-spun technology the problems such as fiber inhomogeneous cooling, realize abundant, the uniform cooling of fiber, the crystal property of fiber is adjusted by regulating and controlling the temperature of constant temperature and pressure enclosed environment simultaneously, it has been obviously improved fiber quality, by the pressure for regulating and controlling constant temperature and pressure enclosed environment, the air drag in spinning process is reduced, melt spinning speed and production and processing efficiency are improved.

Description

A kind of polymer fiber negative pressure melt spinning manufacturing process

Technical field

The invention belongs to melt spinning fields, are related to a kind of polymer fiber negative pressure melt spinning manufacturing process.

Background technology

Melt spinning is most efficient leading processing technology in synthetic fibers, melt spinning theory be melt spinning science with The research core of engineering.Fiber is ejected into winding shaping from spinneret micropore and mainly undergoes slow cooling area, blowing area, natural cooling Area.Wherein blowing area is the important link for ensureing fiber cooling procedure, contains the field of force, temperature field, velocity field etc..Blowing area is It is the research of spinning kinetics in spinning process, and the development of orientation, crystalline texture and the research of Evolution Mechanism are spinning theories The important content of research.At present blowing area primarily formed cross air blasting, ring blowing the type of cooling.Cooling of the fiber in blowing area Effect is directly related 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 winding device, manifold bottom end are equipped with spinneret, and cross air blowing device is equipped with below spinneret, described Cross air blowing device includes air-cooler, and air-cooler is connected with ajutage and rectification air duct, is equipped between ajutage and rectification air duct Filter and volume damper.The wind speed of side-blown air cooling is uniform, can improve spinning quality；Equipped with side-blown windshield plate, by side The wind direction of hair-dryer is intercepted and is decomposed, and is kept the direction of wind and the tow direction of motion unanimous on the whole, is reduced side-blown wind turbine pair The interference of tow.

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

However, the upset that either cross air blasting or ring wind quenching mode can not all avoid fibrous airstream from being formed causes It is insufficient, uniform that cooling occurs in cooling procedure.Though ring blowing compares, cross air blasting can ensure fiber to a certain extent Cooling effect gets a promotion in super fine denier, the upper index of quality of fine count fiber exploitation, 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 further develop Key.

Invention content

It is an object of the invention to shape the deficiency of cooling technology for existing melt spinning, is substituted and passed using lost pressure cooling Cooling is blown in the side-blown cooling and ring of system, is realized that as-spun fibre is abundant in constant temperature and pressure enclosed environment, uniformly cooling, is reduced simultaneously Influence of the air drag to spinning speed in cooling procedure promotes spinning process velocity and efficiency.

In order to achieve the above objectives, the technical solution adopted by the present invention is：

A kind of polymer fiber negative pressure melt spinning manufacturing process, polymer melt first pass 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；

The lost pressure cooling refer to it is cooling in subnormal ambient, the subnormal ambient be finger pressure be 0.001~ 0.01MPa, the constant temperature and pressure enclosed environment that temperature is 5~105 DEG C, the interior constant temperature and pressure enclosed environment is air atmosphere.

As preferred technical solution：

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

A kind of polymer fiber negative pressure melt spinning manufacturing process as described above, the subnormal ambient are closed by maintaining The device of the constant temperature and pressure of atmosphere is realized in environment, and the device for 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 are pumped into via air pump, from air inlet enter closed cavity after from gas outlet flow out；The closed cavity packet It includes upper sealing plate and lower sealing plate, wire through-hole is had at the center of upper sealing plate and lower sealing plate.

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

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

A kind of polymer fiber negative pressure melt spinning manufacturing process as described above, the spinneret orifice are circular hole and abnormity Hole, the irregularly-shaped hole are 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 described above, the slow cooling refers at 20~30 DEG C The spatial altitude of Slow cooling in air atmosphere, slow cooling region is 5~15cm.

A kind of polymer fiber negative pressure melt spinning manufacturing process as described above, as-spun fibre is through lost pressure cooling and nature Boundling is carried out after cooling, oils and winds, and specific spinning technique is as follows：

Polyester POY：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：Polyester POY is after 8 hours balances, respectively through first roller, the Ith hot tank, coldplate, PU disks Formula scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller coiling and molding, It is made polyester DTY, the wherein linear velocity of first roller is 200~600m/min, the linear velocity of the second roller is 500~ The linear velocity of 600m/min, third roller are 300~600m/min, and the linear velocity of Wound-up roller is 400~700m/min, drawing-off Than being 1.2~2.5 for 1.1~1.8, PU disc type false twisting D/Y ratios；

Polyester HOY：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：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 is fully cooled through area of drying again after the slow cooling of slow cooling area, is dried The blowing in area includes cross air blasting and ring two kinds of forms of blowing, and cross air blasting becomes chemical fibre cooling in the past in for quite a long time Major way, but when developing towards directions such as low-titer, abnormity with chemical fibre, traditional cross air blasting can not meet very well The cooling forming of tow, ring blowing are the further development of cross air blasting, especially fine-denier, the profiled filament product to developing high-quality Play crucial effect.But traditional open type quenching mode, be by the blowing of certain speed directly and fiber Contact, by accelerating air flowing, the rate of heat exchange of raising air and fiber increases heat exchange amount, realizes the cooling of fiber, Vividly describe into the cooling of " electric fan " formula, the wind speed that internal-and external diameter is distributed during open type quenching suffered by tow with Wind-warm syndrome generates difference, leads to inhomogeneous cooling one, influences the quality of fiber.On the whole, either cross air blasting or ring blowing is cold But the upset that mode can not all avoid fibrous airstream from being formed causes to occur in cooling procedure cooling insufficient, uniform.

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

Further, since fiber cooling carries out under conditions of pressure is less than atmospheric pressure, during fiber movement by Air drag reduce apparent, be obviously improved so as to cause fiber process speed, improve the efficiency of production and processing.

Advantageous effect：

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

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

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

4) polymer fiber negative pressure melt spinning manufacturing process using the present invention, realizes being quickly cooled down for fiber, adds The fast speed of production of spinning moulding processing, improves efficiency.

Specific implementation mode

The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited Fixed range.

Embodiment 1

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

Then as-spun fibre carries out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.001MPa, temperature is 105 DEG C Cooling, the environment of lost pressure cooling is maintained by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 are located at the top of closed cavity, and air-flow is pumped into via air pump, after air inlet enters closed cavity It is flowed out from gas outlet, closed cavity includes upper sealing plate and lower sealing plate, and it is logical that wire is had at the center of upper sealing plate and lower sealing plate The spatial altitude in hole, constant temperature and pressure enclosed environment is 1m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PET POY, the speed of collection spot fiber For 5000m/min, draft temperature is 60 DEG C, and total stretching ratio is 2.0, winding speed 10000m/min.

Comparative example 1

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

By embodiment 1 and the comparison of comparative example 1 as can be seen that keeping other technological parameters under the same conditions, using negative The pressure type of cooling can realize being obviously improved for spinning speed, and illustrating to be cooled down using ring blowing mode using lost pressure cooling ratio is more had Conducive to the speed of production of high spinning processing and forming, production efficiency is improved.

Embodiment 2

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

Then as-spun fibre carries out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.002MPa, temperature is 100 DEG C Cooling, the environment of lost pressure cooling is maintained by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 are located at the top of closed cavity, and air-flow is pumped into via air pump, after air inlet enters closed cavity It is flowed out from gas outlet, closed cavity includes upper sealing plate and lower sealing plate, and it is logical that wire is had at the center of upper sealing plate and lower sealing plate The spatial altitude in hole, constant temperature and pressure enclosed environment is 1.1m, and the atmosphere in constant temperature and pressure enclosed environment is air；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PTT POY, the speed of collection spot fiber For 4500m/min, draft temperature is 65 DEG C, and total stretching ratio is 2.0, winding speed 9000m/min.

Embodiment 3

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

Then it is cold to carry out negative pressure in pressure is 0.003MPa, constant temperature and pressure enclosed environment at a temperature of 90 °C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PBT POY, the speed of collection spot fiber For 5000m/min, draft temperature is 70 DEG C, and total stretching ratio is 1.6, winding speed 8000m/min.

Embodiment 4

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.005MPa, temperature is 80 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PET POY, the speed of collection spot fiber For 4200m/min, draft temperature is 75 DEG C, and total stretching ratio is 1.4, winding speed 6000m/min.

Embodiment 5

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.006MPa, temperature is 70 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PBT POY, the speed of collection spot fiber For 4000m/min, draft temperature is 80 DEG C, and total stretching ratio is 1.2, winding speed 5000m/min.

Embodiment 6

A kind of PTT DTY negative pressure melt spinning manufacturing process is first 270 DEG C in spinning temperature, and spinning speed is PTT melt streams are formed into as-spun fibre by slow cooling after cross spinneret orifice extrusion under conditions of 10000m/min, are delayed Cold refers to the Slow cooling in 25 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 11cm；

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.007MPa, temperature is 60 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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 boundling is carried out, oils, stretch and winding obtains PTT POY, integrates the speed of spot fiber as 5000m/ Min, draft temperature are 60 DEG C, and total stretching ratio is 2.0, winding speed 10000m/min；

After last natural cooling by PTT POY after 8 hours balance, respectively through first roller, the Ith hot tank, cooling Plate, PU disc types scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller and roll up Around molding, PTT DTY is made, the wherein linear velocity of first roller is 200m/min, and the linear velocity of the second roller is 500m/ The linear velocity of min, third roller are 300m/min, and the linear velocity of Wound-up roller is 400m/min, draw ratio 1.1, PU disc types False twisting D/Y ratios are 1.2.

Embodiment 7

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.008MPa, temperature is 50 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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 boundling is carried out, oils, stretch and winding obtains PTT POY, integrates the speed of spot fiber as 4800m/ Min, draft temperature are 65 DEG C, and total stretching ratio is 1.8, winding speed 8000m/min；

After last natural cooling by PTT POY after 8 hours balance, respectively through first roller, the Ith hot tank, cooling Plate, PU disc types scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller and roll up Around molding, PTT DTY is made, the wherein linear velocity of first roller is 300m/min, and the linear velocity of the second roller is 520m/ The linear velocity of min, third roller are 400m/min, and the linear velocity of Wound-up roller is 500m/min, draw ratio 1.3, PU disc types False twisting D/Y ratios are 1.5.

Embodiment 8

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.009MPa, temperature is 30 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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 boundling is carried out, oils, stretch and winding obtains PBT POY, integrates the speed of spot fiber as 4600m/ Min, draft temperature are 70 DEG C, and total stretching ratio is 1.5, winding speed 7000m/min；

After last natural cooling by PBT POY after 8 hours balance, respectively through first roller, the Ith hot tank, cooling Plate, PU disc types scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller and roll up Around molding, PBT DTY is made, the wherein linear velocity of first roller is 400m/min, and the linear velocity of the second roller is 550m/ The linear velocity of min, third roller are 500m/min, and the linear velocity of Wound-up roller is 500m/min, draw ratio 1.5, PU disc types False twisting D/Y ratios are 1.8.

Embodiment 9

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.01MPa, temperature is 20 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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 boundling is carried out, oils, stretch and winding obtains PET POY, integrates the speed of spot fiber as 4500m/ Min, draft temperature are 75 DEG C, and total stretching ratio is 1.3, winding speed 6000m/min；

After last natural cooling by PET POY after 8 hours balance, respectively through first roller, the Ith hot tank, cooling Plate, PU disc types scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller and roll up Around molding, PET DTY is made, the wherein linear velocity of first roller is 500m/min, and the linear velocity of the second roller is 580m/ The linear velocity of min, third roller are 500m/min, and the linear velocity of Wound-up roller is 600m/min, draw ratio 1.6, PU disc types False twisting D/Y ratios are 2.0.

Embodiment 10

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.01MPa, temperature is 5 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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 boundling is carried out, oils, stretch and winding obtains PET POY, integrates the speed of spot fiber as 4000m/ Min, draft temperature are 80 DEG C, and total stretching ratio is 1.2, winding speed 5000m/min；

After last natural cooling by PET POY after 8 hours balance, respectively through first roller, the Ith hot tank, cooling Plate, PU disc types scroll tube, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller and roll up Around molding, PET DTY is made, the wherein linear velocity of first roller is 600m/min, and the linear velocity of the second roller is 600m/ The linear velocity of min, third roller are 600m/min, and the linear velocity of Wound-up roller is 700m/min, draw ratio 1.8, PU disc types False twisting D/Y ratios are 2.5.

Embodiment 11

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

Boundling is carried out after last natural cooling, is oiled and winding obtains PET HOY, and the speed for collecting spot fiber is 8000m/min, winding speed 20000m/min.

Embodiment 12

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

Boundling is carried out after last natural cooling, is oiled and winding obtains PET HOY, and the speed for collecting spot fiber is 7000m/min, winding speed 19000m/min.

Embodiment 13

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

Boundling is carried out after last natural cooling, is oiled and winding obtains PTT HOY, and the speed for collecting spot fiber is 6500m/min, winding speed 18000m/min.

Embodiment 14

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.004MPa, temperature is 75 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled and winding obtains PBT HOY, and the speed for collecting spot fiber is 6200m/min, winding speed 16000m/min.

Embodiment 15

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.005MPa, temperature is 60 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled and winding obtains PBT HOY, and the speed for collecting spot fiber is 6000m/min, winding speed 15000m/min.

Embodiment 16

A kind of PTT FDY negative pressure melt spinning manufacturing process is first 270 DEG C in spinning temperature, and spinning speed is PTT melt streams are formed into as-spun fibre by slow cooling after cross spinneret orifice extrusion under conditions of 15000m/min, are delayed Cold refers to the Slow cooling in 25 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 11cm；

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.006MPa, temperature is 50 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PTT FDY, the speed of collection spot fiber Speed for 7000m/min, hot-rolling GR1 is 6000m/min, and temperature is 80 DEG C, and the speed of hot-rolling GR2 is 7000m/min, temperature It is 115 DEG C, winding speed 15000m/min.

Embodiment 17

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.008MPa, temperature is 30 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PET FDY, the speed of collection spot fiber Speed for 6500m/min, hot-rolling GR1 is 5000m/min, and temperature is 90 DEG C, and the speed of hot-rolling GR2 is 6500m/min, temperature It is 120 DEG C, winding speed 14000m/min.

Embodiment 18

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.008MPa, temperature is 20 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PBT FDY, the speed of collection spot fiber Speed for 6000m/min, hot-rolling GR1 is 4500m/min, and temperature is 100 DEG C, and the speed of hot-rolling GR2 is 6000m/min, temperature Degree is 125 DEG C, winding speed 13500m/min.

Embodiment 19

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

Then it is cold to carry out negative pressure in the constant temperature and pressure enclosed environment that pressure is 0.009MPa, temperature is 10 DEG C for as-spun fibre But, the environment of lost pressure cooling maintains gas in enclosed environment by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize 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 is pumped into via air pump, from air inlet enter closed cavity after from Gas outlet is flowed out, and closed cavity includes upper sealing plate and lower sealing plate, and wire through-hole is had at the center of upper sealing plate and lower sealing plate, 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；

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PTT FDY, the speed of collection spot fiber Speed for 5500m/min, hot-rolling GR1 is 4200m/min, and temperature is 100 DEG C, and the speed of hot-rolling GR2 is 5500m/min, temperature Degree is 130 DEG C, winding speed 13000m/min.

Embodiment 20

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

Boundling is carried out after last natural cooling, is oiled, is stretched and winding obtains PET FDY, the speed of collection spot fiber Speed for 5000m/min, hot-rolling GR1 is 4000m/min, and temperature is 110 DEG C, and the speed of hot-rolling GR2 is 5000m/min, temperature Degree is 135 DEG C, winding speed 12000m/min.

Embodiment 21

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 8000m/min, is drawn It is 120 DEG C to stretch temperature, draw ratio 2.5, winding speed 20000m/min.

Embodiment 22

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 7500m/min, is drawn It is 130 DEG C to stretch temperature, draw ratio 2.0, winding speed 15000m/min.

Embodiment 23

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6400m/min, is drawn It is 140 DEG C to stretch temperature, draw ratio 1.9, winding speed 12000m/min.

Embodiment 24

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6600m/min, is drawn It is 160 DEG C to stretch temperature, draw ratio 1.5, winding speed 10000m/min.

Embodiment 25

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6000m/min, is drawn It is 180 DEG C to stretch temperature, draw ratio 1.3, winding speed 8000m/min.

Embodiment 26

A kind of Nylon66 negative pressure melt spinning manufacturing process is first 270 DEG C in spinning temperature, and spinning speed is Polyamide 66 melt stream is formed into nascent fibre after cross spinneret orifice extrusion by slow cooling under conditions of 20000m/min Dimension, slow cooling refer to the 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 first 280 DEG C in spinning temperature, and spinning speed is Polyamide 66 melt stream is formed into nascent fibre after rich font spinneret orifice extrusion by slow cooling under conditions of 15000m/min Dimension, slow cooling refer to the Slow cooling in 26 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 12cm；

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 7500m/min, is drawn It is 140 DEG C to stretch temperature, draw ratio 2.0, winding speed 15000m/min.

Embodiment 28

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6400m/min, is drawn It is 150 DEG C to stretch temperature, draw ratio 1.9, winding speed 12000m/min.

Embodiment 29

A kind of Nylon66 negative pressure melt spinning manufacturing process is first 290 DEG C in spinning temperature, and spinning speed is Polyamide 66 melt stream is formed into nascent fibre after Y-shaped spinneret orifice extrusion by slow cooling under conditions of 10000m/min Dimension, slow cooling refer to the 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 first 300 DEG C in spinning temperature, and spinning speed is Polyamide 66 melt stream is formed into as-spun fibre after " H " type spinneret orifice extrusion by slow cooling under conditions of 8000m/min, Slow cooling refers to the 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 first 270 DEG C in spinning temperature, spinning speed For polyamide 1010 melt stream under conditions of 20000m/min nascent fibre is formed by slow cooling after circular hole spinneret orifice extrusion Dimension, slow cooling refer to the Slow cooling in 20 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 5cm；

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 8000m/min, is drawn It is 100 DEG C to stretch temperature, draw ratio 3.0, winding speed 20000m/min.

Embodiment 32

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 7500m/min, is drawn It is 120 DEG C to stretch temperature, draw ratio 2.2, winding speed 15000m/min.

Embodiment 33

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6400m/min, is drawn It is 140 DEG C to stretch temperature, draw ratio 2.0, winding speed 12000m/min.

Embodiment 34

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6600m/min, is drawn It is 150 DEG C to stretch temperature, draw ratio 1.8, winding speed 10000m/min.

Embodiment 35

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6000m/min, is drawn It is 160 DEG C to stretch temperature, draw ratio 1.5, winding speed 8000m/min.

Embodiment 36

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

Embodiment 37

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 7500m/min, is drawn It is 130 DEG C to stretch temperature, draw ratio 2.0, winding speed 18000m/min.

Embodiment 38

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 7000m/min, is drawn It is 150 DEG C to stretch temperature, draw ratio 1.8, winding speed 14000m/min.

Embodiment 39

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

Boundling is carried out after last natural cooling, oils, stretch and winds, and is integrated the speed of spot fiber as 6500m/min, is drawn It is 160 DEG C to stretch temperature, draw ratio 1.5, winding speed 10000m/min.

Embodiment 40

A kind of 56 fiber negative pressure melt spinning manufacturing process of polyamide is first 300 DEG C in spinning temperature, and spinning speed is 56 melt stream of polyamide is formed into as-spun fibre after " H " type spinneret orifice extrusion by slow cooling under conditions of 8000m/min, Slow cooling refers to the 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, it is characterized in that：Polymer melt is after spinneret orifice extrusion It first passes around slow cooling and forms as-spun fibre, then as-spun fibre carries out lost pressure cooling and natural cooling successively；

The lost pressure cooling refers to cooling in subnormal ambient, and the subnormal ambient is that finger pressure is 0.001~0.01MPa, temperature Degree is 5~105 DEG C of constant temperature and pressure enclosed environment, and the interior constant temperature and pressure enclosed environment is air atmosphere；

The subnormal ambient is by maintaining the device of the constant temperature and pressure of atmosphere in enclosed environment to realize, in the maintenance 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 are located at the top of closed cavity, and air-flow is pumped into via air pump, after air inlet enters closed cavity It is flowed out from gas outlet；The closed cavity includes upper sealing plate and lower sealing plate, is had away at the center of upper sealing plate and lower sealing plate Silk through-hole.

2. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1, which is characterized in that the perseverance The spatial altitude of warm constant pressure enclosed environment is 1~2m.

3. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1, which is characterized in that described poly- It is polyester or polyamide to close object.

4. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 3, which is characterized in that described poly- Ester is PET, PTT or PBT, and the polyamide is polyamide 6, polyamide 66, polyamide 1010 or polyamide 56.

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

6. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1, which is characterized in that described slow Cold refers to the Slow cooling in 20~30 DEG C of air atmosphere, and the spatial altitude in slow cooling region is 5~15cm.

7. a kind of polymer fiber negative pressure melt spinning manufacturing process according to claim 1, which is characterized in that nascent fibre Dimension carries out boundling after lost pressure cooling and natural cooling, oils and wind, and specific spinning technique is as follows：

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

Polyester DTY：Polyester POY is false through first roller, the Ith hot tank, coldplate, PU disc types respectively after 8 hours balances Twister, the second roller, network nozzle, the IIth hot tank, third roller and oil tanker finally pass through Wound-up roller coiling and molding, are made Polyester DTY, the wherein linear velocity of first roller are 200~600m/min, and the linear velocity of the second roller is 500~600m/ The linear velocity of min, third roller are 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 ratios are 1.2~2.5；

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

Polyester FDY：Spinning temperature is 270~300 DEG C, and spinning speed is 12000~15000m/min, collects the speed of spot fiber Degree is 5000~7000m/min m/min, and 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, collects the speed of spot fiber Degree be 6000~8000m/min, draft temperature be 100~180 DEG C, draw ratio be 1.3~3.0, winding speed be 8000~ 20000m/min。