CN107164814B - A kind of equipment that melt body directly spins spandex - Google Patents
A kind of equipment that melt body directly spins spandex Download PDFInfo
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- CN107164814B CN107164814B CN201710604577.7A CN201710604577A CN107164814B CN 107164814 B CN107164814 B CN 107164814B CN 201710604577 A CN201710604577 A CN 201710604577A CN 107164814 B CN107164814 B CN 107164814B
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- bdo
- mdi
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
Abstract
The present invention provides a kind of equipment that melt body directly spins spandex, comprising: contains additive, auxiliary agent, and the auxiliary batch can with agitating function and tank body heating and thermal insulation automatic control function；With dehydration, stirring, heating, the main storage tank of PTMG for keeping the temperature automatic control function；MDI principal goods batch can and BDO principal goods batch can；PTMG measuring tank, MDI measuring tank, BDO measuring tank；PTMG precision metering device, MDI precision metering device, BDO precision metering device；Auxiliary batch can is connect with the main storage tank of PTMG, PTMG measuring tank, MDI measuring tank, BDO measuring tank are connect with the main storage tank of PTMG, MDI principal goods batch can and BDO principal goods batch can respectively, PTMG precision metering device, MDI precision metering device are connect with high speed dynamic prepolymerization reactor, high speed dynamic prepolymerization reactor is connect with static prepolymerization reactor, static prepolymerization reactor, BDO precision metering device are connect with polymerization double screw extruder, and polymerization double screw extruder is connect with spin bank.The present invention realizes continuous feeding, the polymerization of continuous melt body, directly spins spandex fibre.
Description
Technical field
The present invention relates to spandex spinning technology fields, and in particular to a kind of equipment that melt body directly spins spandex.
Background technique
Polyurethane elastomeric fiber refers to the fiber for containing at least 85% polyurethane chain link in synthetic fibers, is accustomed in the world
Using the appellation in the U.S., i.e. Spandex, it is known as spandex in China.
Now, the process units of tradition spinning production spandex can be divided into four kinds of forms in the world, wherein with dry or wet
Spinning technique method spinning production spandex process units it is roughly the same, mainly by raw material storage tank, metering, polymerization reaction, filtering,
The equipment such as spin bank composition, dry method, the fundamental difference of wet process are it one is in closed solvent aerosol at the environment of silk
Device in, and another carried out in special water body.The process units of fusion method spinning spandex is then divided into two kinds of forms, first
It first obtains and the spinning material " thermoplastic polyurethane elastomer " for spinning spandex is produced by the enterprise belonged in chemical industry, letter
Claim " spinning-grade TPU ", China is known as " spandex section ".Then by the spinning enterprise in light textile industry to melt the spinning production of method technique
Spandex fibre.Since production spandex section and spinning spandex fibre are two entirely different industries, so its respective production
Device is also completely different.Specifically, the process units of production spandex section is mainly by raw material storage tank, metering, prepolymerization reaction
Device, polymerization double screw extruder, booster pump, driving valve, melt body filter, granulation underwater, dehydration, screening, drying, curing etc. are set
Standby composition；And the spinning of spandex then mainly by spandex section drying, single screw extrusion machine, melt body pump, spinning manifold, spinning pump,
The equipment such as spinneret, spinning shaft, finish nozzle, godet, winding head form spin bank.
The spandex manufacturing enterprise in the whole world about 85% is with the production of dry-spinning process process units, with wet now
Method spinning technique process units spinning spandex only account for 5%, remaining 10% for fusion method spinning process units production.
Summary of the invention
The object of the present invention is to provide it is a kind of continuous feeding may be implemented, the polymerization of continuous melt body, directly spinning spandex are set
It is standby.Have occupied area small compared to dry method, wet process, fusion method spinning spandex fibre process units, cost of investment is few, production technology
Process is simple, and high production efficiency, production management is at low cost, the more advanced outstanding feature of technology.
The object of the present invention is achieved like this:
A kind of equipment that melt body directly spins spandex, comprising:
Additive, auxiliary agent are contained, and has the auxiliary batch can of agitating function and tank body heating and thermal insulation automatic control function；
With dehydration, stirring, heating, the main storage tank of PTMG for keeping the temperature automatic control function；
The MDI principal goods batch can and BDO principal goods batch can of identical platform are placed in the main storage tank of PTMG；
The identical PTMG measuring tank of specification, MDI measuring tank, BDO measuring tank are placed under principal goods batch can platform；
Tank connected PTMG precision metering device, MDI precision meter are measured with PTMG measuring tank, MDI measuring tank, BDO respectively
Measure device, BDO precision metering device；
Auxiliary batch can connect with the main storage tank of PTMG, PTMG measuring tank, MDI measuring tank, BDO measuring tank respectively with PTMG master
Storage tank, MDI principal goods batch can are connected with BDO principal goods batch can, PTMG precision metering device, MDI precision metering device and Gao Sudong
The connection of state prepolymerization reactor, high speed dynamic prepolymerization reactor are connect with static prepolymerization reactor, static prepolymerization reactor, BDO essence
Close metering device is connect with polymerization double screw extruder, polymerization double screw extruder is connect with spin bank.
Ancillary equipment includes vacuum pump, nitrogen making machine group, diphenyl boiler and air compressor machine, is both needed to by design production scale apolegamy.
The PTMG measuring tank, MDI measuring tank, BDO measuring tank are fitted with liquid level controller and lower liquid level controller,
Each main storage tank is accurately controlled to respective measuring tank transferring raw material.
The high speed dynamic prepolymerization reactor makes the prepolymer in machine barrel using the double screw extruder of draw ratio 45:1
Material realizes at least stirring, cutting of 80000 times/min or more and mixing.
The polymerization double screw extruder draw ratio is depending on 60:1 or more, the selection gist size of capacity of diameter specifications.
The polymerization double screw extruder is connected with the first driving valve, booster pump, second in turn in connecting with spin bank
Driving valve, melt body filter.
The main storage tank of the PTMG, MDI principal goods batch can and BDO principal goods batch can, and respectively measuring tank and auxiliary batch can, tank
Body is stainless steel material, and outer jacket layer fills conduction oil, and uniformly distributed heating rod is inserted into from tank body interlayer bottom.
The melt body filter meets the switching that cartridge filter is completed in the case where not parking using double filter vats.
The equipment, execution can be automatically controlled by the start-stop of handling failure spinning station in the state of not parking by being additionally provided with
Mechanism --- button is automatically controlled, when filament failure surprisingly occurs, by pressing automatic control button, failure winding head stops,
Each precision metering device can be by the former discharge for setting instruction automatic adjustment material simultaneously, it is ensured that other spinning stations it is continuous.
The equipment need to reach stable thermal equilibrium state according to technique initialization, specific as follows:
Firstly, auxiliary batch can is preheating to 130 degree, the main storage tank of PTMG, PTMG measuring tank, PTMG delicate metering are filled
It sets and pipeline is preheated by 80 degree of PTMG material technique initialization respectively, by the main storage tank of MDI, MDI measuring tank, MDI essence
Close metering device and pipeline are all preheated by 60 degree of MDI material technique initialization respectively, and the main storage tank of BDO, BDO are measured
Tank, BDO precision metering device and pipeline are preheated by 70 degree of BDO material technique initialization respectively, separately will be dynamically pre- at a high speed
Each section of machine barrel of poly- reactor is preheating to 160 degree of technique initialization, is also preheating to 160 degree to static prepolymerization reactor, polymerization
The temperature of each section of machine barrel of double screw extruder is then respectively set as 160 degree, 180 degree, 185 degree, 190 degree, 195 by technique requirement
Degree, 240 degree, 220 degree differ；Also 220 degree are set as by technique requirement to booster pump, melt body filter；
Secondly, temperature setting is carried out to each function executing unit position in spin bank by production engineering specifications, according in proper order
Progressive, sequence dynamic from low to high adjusts.The variation for adjusting temperature at random is specifically carried out depending on the variation of strand, until tow
It can satisfy subject to the requirement of reeling condition；
Finally, each functional part in a whole set of direct melt spinning spandex generating means all reaches the pre-heating temperature of technique initialization
Afterwards, 10 ~ 12 hours are kept.
The process of spinning spandex is carried out using the equipment, comprising:
Step 1 will pass through heating and complete molten material PTMG, MDI, BDO for liquid, respectively in a manner of vacuum intake
The main storage tank of the respective i.e. PTMG of main storage tank, the main storage tank of MDI, the main storage tank of BDO are sucked, the material being stirred to needs
It is stirred；
Auxiliary batch can is added in additive, auxiliary agent by step 2, after dissolution is sufficiently stirred, injects the main storing of PTMG immediately
Then tank carries out constantly dehydration to the main storage tank of PTMG, by manufacturing technique requirent by PTMG, MDI, BDO material simultaneously
Input respective measuring tank i.e. PTMG measuring tank, MDI measuring tank, BDO measuring tank；
Step 3, PTMG measuring tank, MDI measuring tank, the material in BDO measuring tank are respective by the setting input of production technology
Precision metering device；
Step 4 enters high quick-action by the material of PTMG precision metering device, the metering output of MDI precision metering device simultaneously
State prepolymerization reactor, then it is transferred to static prepolymerization reactor；
Step 5, the material by pre-polymerization enter polymerization twin-screw with the material of BDO precision metering device metering output simultaneously
Extruder polymerize in polymerization double screw extruder machine barrel, and the melt body material after polymerization passes through melt body under the action of booster pump
Filter is filtered.So far, the spinning melt body material of supply spin bank is become from the melt body that melt body filter exports；
Step 6, spinning melt body material respectively enter the intracorporal spinning pump of manifold under the action of melt body pumps, and will spin
Silk melt body material is equally distributed to respective spinneret and forms strand；Strand under gravity, is drawn in spinning shaft
After stretching, cool down, oiling, and enter up- coiler under the action of godet, the fixed paper tube for being wrapped in winding head of tow is enterprising
The winding of row silk so far completes the technical process that melt body directly spins spandex.
The present invention provides a kind of equipment that melt body directly spins spandex, compared to dry and wet spinning production technology production dress
It sets, has the advantages that
1, various production equipments necessary to dry spinning process units should be taken up a large area by horizontal layout, throw
Money is also big, so that production management cost increases.And the present invention only need to be by the projection in place shared by spinning winding head apparatus therein
Area and, extension spatially extended to top make the cost of its investment, production and management also phase so occupied area is reduced significantly
It should substantially reduce.
2, in dry spinning production technology, it is necessary to a kind of solvent DMF with high toxicity and high volatile is used, so
Corresponding solvent recovery unit mating must be installed in a whole set of process units to have become and seriously affect only with regard to this factor
The deadly defect of dry spinning production technology sustainable development, and the present invention is without the use of any solvent, so being known as green ammonia
The title of synthetic fibre.
3, high production efficiency of the invention, spinning speed can reach 400 ~ 800m/min, and tow is monofilament, soft touch,
Especially adapt to spinning fine denier filament, it is easier to realize the differential of spandex production, this is that dry method, wet spinning can not be compared.
4, existing fusion method spinning production technology and spinning process units, though it is that nearly more than two decades new development rises
The spandex spinning production technology and process units come, but it must first be produced by the manufacturing enterprise in chemical industry for molten
Melt the raw material of method spinning spandex, spandex fibre then spinned by the spinning enterprise in light textile industry again, novelty of the invention with
Advance is granulation underwater original production melted spin in spandex raw material " spandex section " process units, dehydration, screening, drying, ripe
Change equipment all to save, then dry, single screw extrusion machine equipment is saved the spandex section in spin bank, then remaining
Remaining equipment, which joins end to end, in equipment and spin bank in spandex section process units connects, and in direct melt spinning spandex patent
Equipment of the invention is formed under the guarantee of technology, realizes continuous feeding, the polymerization of continuous melt body, normal, the company for directly spinning spandex
Continuous production.
Detailed description of the invention
Fig. 1 is the equipment schematic diagram that melt body in the specific embodiment of the invention directly spins spandex；
Wherein, 0- assists batch can, the main storage tank of 1-PTMG, 1 '-PTMG measuring tank, the main storage tank of 2-MDI, 2 '-MDI metering
Tank, the main storage tank of 3-BDO, 3 '-BDO measuring tanks, 4-PTMG precision metering device, 5-MDI precision metering device, 6-BDO are accurate
Metering device, 7- high speed dynamic prepolymerization reactor, 8- static state prepolymerization reactor, 9- polymerize double screw extruder, and 10- first drives
Valve, 11- booster pump, 12- the second driving valve, 13- melt body filter, 14,15- melt body pump, 16,17- spinning manifold, 18,19,
20,21- spinning shaft, 22,23,24,25- spinning oil atomizer, 26,26 ', 27,27 ', 28,28 ', 29,29 '-godets,
30,31,32,33- winding head.
Specific embodiment
The equipment for directly spinning spandex to melt body provided by the invention with reference to the accompanying drawing elaborates:
The equipment that melt body shown in FIG. 1 directly spins spandex, comprising:
Contain additive, auxiliary agent, and the auxiliary batch can 0 with agitating function and tank body heating and thermal insulation automatic control function；
With dehydration, stirring, heating, the main storage tank 1 of PTMG for keeping the temperature automatic control function；
The MDI principal goods batch can 2 and BDO principal goods batch can 3 of identical platform are placed in the main storage tank of PTMG；
The identical PTMG measuring tank 1 ' of the specification placed under principal goods batch can platform, MDI measuring tank 2 ', BDO measuring tank
3'；
PTMG precision metering device 4, the MDI being connect respectively with PTMG measuring tank 1 ', MDI measuring tank 2 ', BDO measuring tank 3 '
Precision metering device 5, BDO precision metering device 6；
Auxiliary batch can 0 is connect with the main storage tank 1 of PTMG, and PTMG measuring tank 1 ', MDI measuring tank 2 ', BDO measuring tank 3 ' are respectively
It is connect with the main storage tank 1 of PTMG, MDI principal goods batch can 2 and BDO principal goods batch can 3, PTMG measuring tank 1 ', MDI measuring tank 2 ', BDO meter
Measuring tank 3 ' is fitted with liquid level controller and lower liquid level controller, accurately controls each main storage tank to respective measuring tank and conveys original
Material guarantees the continuity of production.Each precision metering device is by accurate stabilized pressure pump, pressure sensor, precision metering pump, precision
The closed circuit automatic control metering device of flowmeter composition, PTMG precision metering device 4, MDI precision metering device 5 and high speed dynamic
Prepolymerization reactor 7 connects, and high speed dynamic prepolymerization reactor 7 is connect with static prepolymerization reactor 8, static prepolymerization reactor 8, BDO
Precision metering device 6 is connect with polymerization double screw extruder 9, and polymerization double screw extruder 9 is connect with spin bank.The polymerization
Be connected in turn in the connection of double screw extruder 9 and spin bank the first driving valve 10, booster pump 11, the second driving valve 12,
Melt body filter 13.
High speed dynamic prepolymerization reaction is flowed by the material that PTMG precision metering device 4 and MDI precision metering device 5 flow out
Device 7, high speed dynamic prepolymerization reactor 7 can be such that the pre-polymerization material in machine barrel realizes using the double screw extruder of draw ratio 45:1
At least stirring, cutting of 80000 times/min or more and mixing then enter static prepolymerization reactor 8.Material by pre-polymerization with
The material of the metering outflow of BDO precision metering device 6 enters polymerization double screw extruder 9 together, carries out melt body polymerization.It polymerize double spiral shells
Bar extruder 9 is the host of present device, it is desirable that for its draw ratio in 60:1 or more, the selection of diameter specifications can be according to production
Depending on energy scale.What is be connected with polymerization double screw extruder 9 is successively the first driving valve 10, booster pump 11, the second driving valve
12, melt body filter 13.The specific arrangement of spin bank is: the melt body polymerizeing completely exported through melt body filter 13 is being melted
It is into spinning manifold 16,17, then by the spinning pump in spinning manifold 16,17 that spinning melt body is uniform under the action of body pump 14,15
Spinneret is distributed on ground, and the strand that spinneret sprays enters spinning shaft 18,19,20,21, and strand is drawn under gravity
After stretching, cool down, spraying spinning oil, keep tow uniform under the action of godet 26,26 ', 27,27 ', 28,28 ', 29,29 '
Ground is wrapped on the paper tube of winding head 30,31,32,33, is formed spinning cake, is so far completed the production work of whole direct melt spinning spandexs
Skill process.Spinning oil therein is sprayed by spinning oil atomizer 22,23,24,25.
The equipment that melt body directly spins spandex must have following condition:
The main storage tank 1 of PTMG, MDI principal goods batch can 2 and BDO principal goods batch can 3: and respective measuring tank and auxiliary batch can,
Tank body is stainless steel material, and outer jacket layer fills conduction oil, and uniformly distributed heating rod is inserted into from tank body interlayer bottom.With stirring
The mixing plant of function is connect using highly effective mechanically-sealing technology with tank body, in equipment installation, must be protected to tank body
Temperature processing.
Delicate metering: stabilized pressure pump, metering pump, flowmeter in each precision metering device are high-precision product, must also be had
There are conducting self-heating function and automatic control function and Multi-function display function.
Prepolymerization reactor: it is divided into high speed dynamic prepolymerization reactor and static prepolymerization reactor.The former be use draw ratio for
The double screw extruder of 45:1 is adjusted its screw rod block combiner, so that the material in machine barrel realizes 80000 times/min
Above stirring, cutting, mixing pre-polymerization, the temperature control precision of machine barrel must reach positive and negative 1 degree, and static prepolymerization reactor is routinely
Radial tubular reactor.
Polymerize double screw extruder: draw ratio is designed according to production capacity and is selected in 60:1 or more, the diameter of screw rod.To screw rod
The temperature control precision of machine barrel must reach positive and negative 0.5 degree.
Booster pump: connection type will meet the machine barrel Joining Technology requirement of polymerization double screw extruder.
Melt body filter: it is required that double filter vat designs, and meet the switching that cartridge filter is completed in the case where not parking,
The heating and thermal insulation control precision of filter body can be positive and negative 1 degree, and connection type will meet the machine barrel connection of double screw extruder
Technique requirement.
Spin bank: corollary equipment has melt body pump, spinning pump, and winding head is divided into lever and fluid pressure type, and handling spinning cake is equal
Need fracture of wire.
In addition, equipment of the invention particularly also is provided with can be successfully processed opening for failure spinning station in the state of not parking
Stop automatically controlling executing agency --- button is automatically controlled, its working principle is that, when filament failure surprisingly occurs, as long as pressing certainly
Dynamic control button, the parking of failure winding head, while each precision metering device can be by the former streams for setting instruction automatic adjustment material
Output, it is ensured that other spinning stations it is continuous, it is normal to produce, finished to troubleshooting, former normal setting can be restored.It may insure
The extrusion output and spin bank that polymerize melt body reach the perfect matching of moment change to the demand of melt body, ensure a whole set of production dress
The continuous production set.
When using spinning apparatus spandex of the invention, need to reach stable thermal equilibrium state according to technique initialization,
Melt body is carried out again directly spins spandex technical process.
Stable thermal equilibrium state is reached according to technique initialization, specific as follows:
Firstly, auxiliary batch can 0 is preheating to 130 degree, by the main storage tank 1 of PTMG, PTMG measuring tank 1 ', PTMG precision meter
Amount device 4 is all preheated by 80 degree of PTMG material technique initialization respectively together with the pipe section respectively connected, by MDI master
Storage tank 2, MDI measuring tank 2 ', MDI precision metering device 5 are together with the pipe section respectively connected all respectively by 60 degree of MDI object
Material technique initialization is preheated, and by the main storage tank 3 of BDO, BDO measuring tank 3 ', BDO precision metering device 6 is together with respective connection
Pipe section all preheated respectively by 70 degree of BDO material technique initialization, separately by each of high speed dynamic prepolymerization reactor 7
Section machine barrel is preheating to 160 degree of technique initialization, is also preheating to 160 degree to static prepolymerization reactor 8, polymerize double screw extruder
The temperature of 9 each section of machine barrel then by technique requirement be respectively set as 160 degree, 180 degree, 185 degree, 190 degree, 195 degree, 240 degree,
220 degree are differed；Also 220 degree are set as by technique requirement to booster pump 11, melt body filter 13.
Secondly, temperature setting is carried out to each function executing unit position in spin bank by production engineering specifications, according in proper order
Progressive, sequence dynamic from low to high adjusts.The variation for adjusting temperature at random is specifically carried out depending on the variation of strand, until tow
It can satisfy subject to the requirement of reeling condition.
Finally, each functional part in a whole set of direct melt spinning spandex process units all reaches the pre-heating temperature of technique initialization
Afterwards, it is necessary to keep 10 ~ 12 hours, to reach system-wide stable thermal equilibrium, just can guarantee the stabilization of production in this way, connect
It is continuous to carry out.
Process using spinning apparatus spandex of the invention is as follows:
Step 1 will pass through heating and complete molten material PTMG, MDI, BDO for liquid, respectively in a manner of vacuum intake
The main storage tank 1 of the respective i.e. PTMG of main storage tank, the main storage tank 2 of MDI, the main storage tank 3 of BDO are sucked, needs are stirred
Material is stirred；
Auxiliary batch can 0 is added in additive, auxiliary agent by step 2, after dissolution is sufficiently stirred, injects the main storing of PTMG immediately
Then tank 1 carries out constantly dehydration to the main storage tank of PTMG 1, will by manufacturing technique requirent after the completion of processing to be drained off
PTMG, MDI, BDO material input respective measuring tank i.e. PTMG measuring tank 1 ', MDI measuring tank 2 ', BDO measuring tank 3 ' simultaneously, defeated
PTMG, MDI, BDO material carry out accurate, material filling on schedule by the control of upper and lower liquid level controller automatically during entering；
Step 3, PTMG measuring tank 1 ', MDI measuring tank 2 ', the material in BDO measuring tank 3 ' are defeated by the setting of production technology
Enter respective precision metering device, i.e. PTMG precision metering device 4, MDI precision metering device 5, BDO precision metering device 6；
Step 4 enters high speed by the material of PTMG precision metering device 4, the metering output of MDI precision metering device 5 simultaneously
Dynamic prepolymerization reactor 7, then it is transferred to static prepolymerization reactor 8；
Step 5, the material by pre-polymerization enter simultaneously with the material of the metering output of BDO precision metering device 6 polymerize double spiral shells
Bar extruder 9 completes sufficiently polymerization, after polymerization in polymerization 9 machine barrel of double screw extruder under the action of screw rod block combiner
Melt body material be filtered under the action of booster pump 11 by melt body filter 13.So far, it is exported from melt body filter 13
Melt body be to be supplied with the spinning melt body material of spin bank；It polymerize double screw extruder 9 to the pipeline of booster pump 11 by first
Driving valve 10 controls on-off, and the pipeline of booster pump 11 to melt body filter 13 controls on-off by the second driving valve 12.
Step 6, spinning melt body material respectively enter the spinning in spinning manifold 16,17 under the action of melt body pump 14,15
Pump, and spinning melt body material is equally distributed to respective spinneret and forms strand.Strand under gravity, in spinning
After being stretched in path 18,19,20,21, be cooling, being oiled, i.e., the effect in godet 26,26 ', 27,27 ', 28,28 ', 29,29 '
It is lower to enter up- coiler, use " thread suction gun " by the fixed volume for being wrapped in progress silk on the paper tube of winding head 30,31,32,33 of tow
Around so far completion melt body directly spins the technical process of spandex.
Claims (9)
1. the equipment that a kind of melt body directly spins spandex characterized by comprising
Additive, auxiliary agent are contained, and with agitating function and with the auxiliary batch can (0) of tank body heating and thermal insulation automatic control function；
With dehydration, stirring, heating, the main storage tank of PTMG (1) for keeping the temperature automatic control function；
The MDI principal goods batch can (2) and BDO principal goods batch can (3) of identical platform are placed in the main storage tank of PTMG；
The identical PTMG measuring tank (1 ') of the specification placed under principal goods batch can platform, MDI measuring tank (2 '), BDO measuring tank
(3 ')；
The PTMG precision metering device being connect respectively with PTMG measuring tank (1 '), MDI measuring tank (2 '), BDO measuring tank (3 ')
(4), MDI precision metering device (5), BDO precision metering device (6)；
Auxiliary batch can (0) is connect with the main storage tank of PTMG (1), PTMG measuring tank (1 '), MDI measuring tank (2 '), BDO measuring tank
(3 ') are connect with the main storage tank of PTMG (1), MDI principal goods batch can (2) and BDO principal goods batch can (3) respectively, PTMG precision metering device
(4), MDI precision metering device (5) is connect with high speed dynamic prepolymerization reactor (7), high speed dynamic prepolymerization reactor (7) and static state
Prepolymerization reactor (8) connection, static prepolymerization reactor (8), BDO precision metering device (6) with polymerize double screw extruder (9) company
It connects, polymerization double screw extruder (9) is connect with spin bank；
The equipment need to reach stable thermal equilibrium state according to technique initialization, specific as follows:
Firstly, auxiliary batch can (0) is preheating to 130 degree, the main storage tank of PTMG (1), PTMG measuring tank (1 '), PTMG is accurate
Metering device (4) and connecting pipe are preheated by 80 degree of PTMG material technique initialization respectively, by the main storage tank of MDI (2),
MDI measuring tank (2 '), MDI precision metering device (5) and connecting pipe are all carried out by 60 degree of MDI material technique initialization pre- respectively
Heating, by the main storage tank of BDO (3), BDO measuring tank (3 '), BDO precision metering device (6) and connecting pipe press 70 degree respectively
BDO material technique initialization is preheated, and each section of machine barrel of high speed dynamic prepolymerization reactor (7) is separately preheating to technique initialization
160 degree, 160 degree is also preheating to static prepolymerization reactor (8), polymerize the temperature of each section of machine barrel of double screw extruder (9)
Then by technique requirement be respectively set as 160 degree, 180 degree, 185 degree, 190 degree, 195 degree, 240 degree, 220 degree differ；To booster pump
(11), melt body filter (13) is also set as 220 degree by technique requirement；
Secondly, the setting of temperature is carried out to each function executing unit position in spin bank by production engineering specifications, it must be according in proper order
Progressive, sequence dynamic from low to high adjusts；The variation for adjusting temperature at random is specifically carried out depending on the variation of strand, until tow
It can satisfy subject to the requirement of reeling condition；
Finally, after each functional part of a whole set of direct melt spinning spandex generating means all reaches the pre-heating temperature of technique initialization,
Kept for 10 ~ 12 hours.
2. equipment according to claim 1, which is characterized in that the PTMG measuring tank (1 '), MDI measuring tank (2 '), BDO
The equipped upper liquid level controller of measuring tank (3 ') and lower liquid level controller, it is former to the conveying of respective measuring tank to control each main storage tank
Material.
3. equipment according to claim 1, which is characterized in that the high speed dynamic prepolymerization reactor (7), using draw ratio
The double screw extruder of 45:1 makes the pre-polymerization material in machine barrel realize stirring, cutting and the mixing of 80000 times/min or more.
4. equipment according to claim 1, which is characterized in that polymerization double screw extruder (9) draw ratio is in 60:1
More than, depending on the selection gist size of capacity of diameter specifications.
5. equipment according to claim 1, which is characterized in that the polymerization double screw extruder (9) and spin bank connect
It is connected with the first driving valve (10), booster pump (11), the second driving valve (12), melt body filter (13) in the pipeline connect in turn.
6. equipment according to claim 1, which is characterized in that the main storage tank of PTMG (1), MDI principal goods batch can (2) and
BDO principal goods batch can (3), auxiliary batch can (0), PTMG measuring tank (1 '), MDI measuring tank (2 '), BDO measuring tank (3 ') tank body are
Stainless steel material, outer jacket layer fill conduction oil, and uniformly distributed heating rod is inserted into from tank body interlayer bottom.
7. equipment according to claim 1, which is characterized in that the melt body filter (13) uses double filter vats, and
Meet the switching that cartridge filter is completed in the case where not parking.
8. equipment according to claim 1, which is characterized in that be additionally provided with handling failure can spin in the state of not parking
The start-stop of silk position automatically controls executing agency --- button is automatically controlled, when filament failure surprisingly occurs, by pressing automatic control
Button processed, the parking of failure winding head, while each precision metering device can be by the former discharges for setting instruction automatic adjustment material, really
Protect the continuous production of other spinning stations.
9. carrying out the process of spinning spandex using equipment described in claim 1 characterized by comprising
Step 1 will pass through heating and complete molten material PTMG, MDI, BDO for liquid, be sucked in a manner of vacuum intake respectively
The respective main main storage tank of storage tank, that is, PTMG (1), the main storage tank of MDI (2), the main storage tank of BDO (3) are stirred needs
Material be stirred；
Auxiliary batch can (0) is added in additive, auxiliary agent by step 2, after dissolution is sufficiently stirred, injects the main storage tank of PTMG immediately
(1), constantly dehydration then is carried out to the main storage tank of PTMG (1), by manufacturing technique requirent by PTMG, MDI, BDO material
Respective measuring tank i.e. PTMG measuring tank (1 '), MDI measuring tank (2 '), BDO measuring tank (3 ') are inputted simultaneously；
Step 3, PTMG measuring tank (1 '), MDI measuring tank (2 '), the material in BDO measuring tank (3 ') press the setting of production technology
Input respective precision metering device；
Step 4 enters high speed by the material of PTMG precision metering device (4), MDI precision metering device (5) metering output simultaneously
Dynamic prepolymerization reactor (7), then it is transferred to static prepolymerization reactor (8)；
Step 5, the material by pre-polymerization enter polymerization twin-screw with the material of BDO precision metering device (6) metering output simultaneously
Extruder (9) polymerize in polymerization double screw extruder (9) machine barrel, effect of the melt body material after polymerization in booster pump (11)
It is filtered by melt body filter (13) down；So far, the melt body exported from melt body filter (13) is supplied with spin bank
Spinning melt body material；
Step 6, spinning melt body material respectively enter spinning manifold (16), in (17) under the action of melt body pumps (14), (15)
Spinning pump, and spinning melt body material is equally distributed to respective spinneret and forms strand；Strand under gravity,
Spinning shaft (18), (19), (20), stretch in (21), be cooling, oiling after, i.e., godet (26), (26 '), (27),
Enter up- coiler under the action of (27 '), (28), (28 '), (29), (29 '), by tow it is fixed be wrapped in winding head (30),
(31), the winding of silk is carried out on the paper tube of (32), (33), so far completes the technical process that melt body directly spins spandex.
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| CN201710604577.7A CN107164814B (en) | 2017-07-24 | 2017-07-24 | A kind of equipment that melt body directly spins spandex |
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| CN201710604577.7A CN107164814B (en) | 2017-07-24 | 2017-07-24 | A kind of equipment that melt body directly spins spandex |
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| CN107164814A CN107164814A (en) | 2017-09-15 |
| CN107164814B true CN107164814B (en) | 2019-05-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8148475B2 (en) * | 2003-06-30 | 2012-04-03 | Lubrizol Advanced Materials, Inc. | Melt spun polyether TPU fibers having mixed polyols and process |
| CN1303122C (en) * | 2003-08-28 | 2007-03-07 | 冯鹰 | Production equipment of polyurethane fibre chip and application method of said polyurethane fibre chip |
| CN101148494B (en) * | 2007-10-26 | 2010-07-21 | 张勇 | Method for producing urethane elastomer and application |
| CN102115919B (en) * | 2010-12-10 | 2013-02-13 | 太仓市金祥氨纶纤维有限公司 | Melting and direct-spinning superfine denier (4.6-5.5 denier) high-elastic modulus polyurethane fiber equipment |
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