CN1296089A - Reducing thermotube and spinning device and method using the same - Google Patents
Reducing thermotube and spinning device and method using the same Download PDFInfo
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- CN1296089A CN1296089A CN 99120000 CN99120000A CN1296089A CN 1296089 A CN1296089 A CN 1296089A CN 99120000 CN99120000 CN 99120000 CN 99120000 A CN99120000 A CN 99120000A CN 1296089 A CN1296089 A CN 1296089A
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Abstract
The present invention relates to a reducing thermotube for spinning synthetic fibre and its spinning equipment and spinning method. The described reducing thermotube possesses various changed tube inner wall curves, for three zones of said described thermotube the different temperatures are applied, and at spinning speed of 2000-8000 m/min the different air flow fields and temperature fields can be formed, and under the action of tension and heat the interior of cellosilk can produce stress-induced crystallization and thermotropic crystallization so as to obtain various synthetic filaments and multifilament from fine denier to coarse denier. The described synthetic filament possesses excellent even dyeing property, colour fastness and extensibility, and its spinning method is easy to operate and its cost is low.
Description
The present invention relates to a kind of novel synthetic fiber production with device for spinning and spinning process, more particularly, the present invention relates to a kind of novel synthetic fiber production with thermotube, the device for spinning that uses this heat pipe and spinning process.
Up to now, for spinning macromolecule crystal structure is in the synthetic fiber such as long filament of preferential orientation state, FDY in the past (Full Drawn Yarn) silk has another name called " fullly drawn yarn (FDY) " and normally with two draw rolls tow is done artificial stretching.For example, application number is the Chinese invention patent application etc. of the method for multifilament " produce " of " 96101385 ", the artificial German Barmag AG of application, has adopted the drawing roller of one or two pair of heating that tow is stretched.But described method is often not ideal enough to the control of " crystal region " in the fiber macromolecular structure and " unformed area ".Again, have defectives such as the high and back working ability deficiency of cost usually owing to make the two-step process of polyester filament, therefore, over nearly two, 30 years, people are devoted to make the research of the one-step technology of synthetic fiber filament such as polyester always.Wherein, topmost Basic Law spinning technique has: the fusion heat pipe spinning process that spinning speed is stretching simultaneously and finalizing the design more than 4000 meters/minute, in a heating tube.
The key of described hot-pipe spinning method is, the hot-pipe spinning device that stretches, heats by heat pipe.Described heat pipe is generally a tube that wherein is provided with the drawing passageway in one or more heating-up temperature zone.Described hot-pipe spinning method normally with the synthetic fiber melt after spinning head is extruded, tentatively cool off through quenching air window, enter and be located at the quenching air window downstream to the heat-pipe apparatus between the winding part, stretching and heating (typing) through the preliminary synthetic fibres different temperatures district in heat pipe of cooling off of quenching air window obtain required fiber macromolecular structure.
For example, the application number of Germany Ba Mage (Bamarg) joint-stock company is that " 89103411 ", denomination of invention disclose a kind of spinning equipment for the Chinese patent application of " spinning equipment ", described spinning equipment is at first to cool off from the synthetic fiber bundle that spinning head comes out, and pulls out with silk speed 4500 meters/minute or bigger then.Then, the synthetic fiber bundle in advancing heats in a heating tube once more.Heating tube can move on guider and the location along the stroke of silk.Thus, make the offset procedure of described synthetic fiber bundle in heating tube, take place under the suitable temperature all the time.
And for example, the Barmag AG of Germany had also once produced a kind of TCS heat pipe, being used for TCS technology, yet, this plant energy consumption big (biphenyl heating, 0.5KW/ synnema), heavy (the hot case of heat pipe band weighs 1.5 tons altogether) need be with the high pressure suction gun of 14Kg during spinning; In addition, spinning speed also must be more than 4000 meters/minute, and its technology still is first cooling, the back heating, and, extend wayward below 30%.
For another example, the application people is that " 91103046.8 ", denomination of invention disclose a kind of spinning equipment that is used for spinning synthetic melt spinnable polymers for the Chinese patent application of " a kind of equipment that is used for spinning synthetic melt spinnable polymers " for Hoechst Celanese Corp, the application number of the U.S., and described spinning equipment mainly comprises: a spinning manifold; Length is greater than 5 meters and have the microscler instlated tubular of two end points, and an end of described pipe links to each other with described spinning manifold; A device that is used to reduce turbulent flow is fixed in second end of pipe; A device that is used for convergence fiber is fixed on the contiguous position of managing second end.
The problem that above-mentioned similar technology exists is: required spinning (coiling) speed is all more than 4000 meters/minute; On the mechanism and process of spinning technique, all be cooling earlier on spinning threadling, to finish the spinning technique of partially oriented yarn (POY), then, heating, drawing-off obtain full-drawn yarn again.Like this, above-mentioned spinning process or investment are bigger, the repiece difficulty; Perhaps restricted application; Perhaps the elongation control difficulty of strand in spinning process is difficult to promote.In addition, though described heat pipe can make the thermal treatment zone with different temperatures section, can't the free adjustment heat pipe in the tension force of spinning and the variation in temperature field; Thereby, can't change and obtain the structure and the performance of required best fiber; Can't obtain the silk and the multifilament of multiple performance, different style.In addition, the filament that obtains with the speed high speed spinning between 3000～4000 meters/minute be a kind of partially oriented (preorientated) silk (Pre-Oriented Yarn, POY).
Simultaneously, above-mentioned conventional art exist still that the anti-interference of its spinning process is poor, bar do easily irregular, variety range is narrower and the spinning problem of unstable.
To this, the application people is " 96104116 ", denomination of invention disclose a kind of polyester fiber for the Chinese patent application of " high speed single step spining art of polyester full stretchable filament, device and schics heat pipe thereof " spinning technique and a device thereof for people, application numbers such as the Wu Jia of China Textile University unicorns, used a kind of heat pipe-stress-induced orientation crystallization spinning (Stress Induced Crystall Spinning in the high speed of a kind of polyester filament FSY (full stretchable filament), single step spining art, device and this device, be called for short SICS, schics) heat pipe.
Foregoing invention is laid a stress-induced orientation crystallization spinning heat pipe one by the lateral blowing reveal below spinnerets and is called for short SICS (schics) heat pipe, can be under hot conditions, make randomly-oriented macromolecular network in the fiber under critical nonequilibrium phase transition condition, one step oriented crystalline, finish the master operation of single step spining, the dawn that makes silk is counted the full stretching, extension Polyester Filament that scope is wide, intensity is big, dyeability is excellent.
Yet, above-mentioned schics heat pipe and device for spinning thereof and technology still can't the free adjustment heat pipe in the tension force of spinning and the variation in temperature field, thereby, change and obtain the structure and the performance of required best fiber, obtain the silk and the multifilament of multiple performance, different style.In addition,, also used many expensive sapphires and ruby in people's such as above-mentioned Wu Jia unicorn the device for spinning, like this, easily influenced process operation and tow performance, and its manufacturing cost is significantly increased for obtaining uniform spinning stress.
Inventor back after deliberation finds: under the condition of high temperature, when silk passed through heat pipe, silk was in tension force and heating status.Tension force makes the inside of silk produce internal stress, the stress-induced orientation crystallization takes place, and thermotropic crystallization takes place then the result who is heated.Design heat pipe inwall curve, promptly the diameter in cross section garden can change the air flow field in the heat pipe, and a last suffered active force is changed, and cause STRESS VARIATION, and the crystalline temperature position and the degree of crystallinity of stress-induced orientation crystallization changes also.Meanwhile, reducing curve difference, suffered radiant heat is also different.The heating-up temperature that changes heat pipe also is to make another effective way that produces difference by the tow performance of heat pipe.At a certain temperature, when tow reaches certain winding speed, can form pre-oriented yarn (POY), further improve winding speed, can form fully oriented filament (FDY).The silk that is spinned is heated evenly, and the dyeability excellence forms the product with different performance, style.
The inventor finds again after after deliberation: adopt a plurality of, especially adopt the thermotube of two above the invention described above to carry out with the spinning of the plate opposite sex, each designs the curve diameter and the heating-up temperature of different inside pipe walls, can form the multifilament of forming by as washing shrinkage, degree of crystallinity, the different monofilament of dyeability, enlarge the kind of hot-pipe spinning.Finished the present invention thus.
One of purpose of the present invention is: a kind of synthetic fiber spinning thermotube is provided; Described thermotube has the inner wall curve of various variations, to the different sections of the described heat pipe temperature of different range in addition respectively, 2000～8000 meters/minute, particularly under 3000～6000 meters/minute the spinning speed, can form different air flow fields and temperature field, under tension force and heat effect, make inner stress induced crystallization and the thermotropic crystallization of taking place of silk; By this, regulate the crystalline temperature and the degree of crystallinity of silk, make the Polyester Filament of arbitrary kind of (20dtex-300dtex/ silk, 0.4～6dtex/ single fiber) from the thin dawn to the thick dawn.Described Polyester Filament has excellent dyeing uniformity, stainability, intensity and elongation.
Another purpose of the present invention is, a kind of device for spinning of synthetic fiber production usefulness is provided, described device for spinning adopts the aforementioned thermotube more than or two, by above-mentioned thermotube more than two is implemented different inner wall curve and temperature, 2000～8000 meters/minute, particularly under 3000～6000 meters/minute the spinning speed, can form different air flow field and temperature field mutually; Under tension force and heat effect, make the inside of silk that stress induced crystallization and thermotropic crystallization take place; By this, regulate the crystalline temperature and the degree of crystallinity of silk, make from the thin dawn to the thick dawn all excellent multifilament of (20dtex-300dtex/ silk, 0.4-6dtex/ single fiber), dyeing uniformity, stainability, intensity and elongation.Described multifilament is by forming as washing shrinkage, degree of crystallinity, the different monofilament of dyeability.
A further object of the present invention is, a kind of synthetic fiber production spinning process is provided, described spinning process is to adopt above-mentioned thermotube more than or two, by above-mentioned one or more thermotube is implemented different inner wall curve and temperature, 2000～8000 meters/minute, particularly under 3000～6000 meters/minute the spinning speed, can form different air flow field and temperature field mutually, under tension force and heat effect, make the inside of silk that stress induced crystallization and thermotropic crystallization take place; By this, regulate the crystalline temperature and the degree of crystallinity of silk, make from the thin dawn to the thick dawn all excellent multifilament of (20dtex-300dtex/ silk, 0.4-6dtex/ single fiber), dyeing uniformity, stainability, intensity and elongation.Described multifilament is by forming as washing shrinkage, degree of crystallinity, the different monofilament of dyeability.By this, enlarge the kind of the hot-pipe spinning of synthetic fiber.
Thermotube of the present invention and use this heat pipe device for spinning design, manufacturing is easy, energy consumption is low, and is easy to maintenance; Applicable to multiple occasion; Adopt the spinning process of thermotube of the present invention and device for spinning to make synthetic fiber filament spinning technique flow process weak point, easy operating; With low cost, can spin many kinds synthetic fibres from the thin dawn to the thick dawn.
Thermotube structure of the present invention is as follows:
The heating tube that a kind of its middle formation tensile fiber passage, tube wall are made of zone of heating and heat-insulation layer, the longitudinal section curve of its inside pipe wall, that is, pipe cross circular section internal diameter can change.
Thermotube of the present invention is the immerging metal tube heater of long 1.0～2.5m, external diameter φ a 3.0～6.0mm, internal diameter φ 1.5～5.0mm.
Preferably, long 1.5～2.5m, external diameter φ 4.0～5.0mm of thermotube of the present invention, internal diameter φ 2.5～4.5mm.
For obtaining the fiber filament of homogeneous heating, dyeability excellence, be preferably, the inwall longitudinal section curve of thermotube of the present invention is the crooked hyperbolic-type of an introversion (protruding), its internal diameter size is the scope of φ 2.5～4.5mm.
For obtaining the fiber filament of homogeneous heating, dyeability excellence, be preferably, the inwall longitudinal section curve of thermotube of the present invention is the crooked hyperbolic-type of an extroversion (protruding), its internal diameter size is φ 2.5～4.5mm.
For obtaining the coarse denier fiber long filament of homogeneous heating, dyeability excellence, be preferably, the inwall longitudinal section curve of thermotube of the present invention is the parabolic type of an inflexion, its internal diameter size is the scope of φ 2.5～4.5mm.
High-strength for obtaining, the low synthetic fiber filament that shrinks, the inwall longitudinal section curve of thermotube of the present invention is the different flared types of two end diameters, the difference of its two ends internal diameter is in the scope of 2.0～4.5mm.
For obtaining the coarse denier fiber long filament of homogeneous heating, dyeability excellence, be preferably, the inwall longitudinal section curve of thermotube of the present invention is an export-oriented crooked parabolic type, its internal diameter size is the scope of φ 2.5～4.5mm.
For obtain high to shrink, the fiber filament at thin dawn to thick dawn of three different (iso-fineness, different cross section, different contractions) of excellent performance, be preferably, the inwall longitudinal section curve of thermotube of the present invention is one to have the reducing shaped form that (that is, is undaform) more than two sections.
The device for spinning of employing thermotube of the present invention is by constituting as the lower part:
1. spinning device; 2. thread plate; 3. thermotube; 4. coiler device.
It is characterized in that, described device for spinning by the thermotube more than one or two and zero～two not the reducing heat pipe heat become, described reducing and not thermotube be the immerging metal tube heater of aforesaid length 1.0～2.5m, external diameter φ 3.0～6.0mm, internal diameter φ 2.0～5.0mm.
In the device for spinning of the present invention that adopts above-mentioned heat pipe more than two, the temperature of described heat pipe is in wherein at least one heating, and the temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections.The temperature range of described three sections is in the relation that increases progressively that comprises the fair stage of temperature, to form a temperature field.
Particularly, described heating heat pipe is in 120-260 ℃ temperature range constant or variation, that be divided into three heating-up temperature sections, forms a temperature field.
In the above-mentioned temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections, wherein one or two heating-up temperature section can not heat, and described humidity province of not heating refers to that promptly heat pipe temperature is about 30 ℃.
The occasion that does not heat heat pipe is being arranged, though the described heat pipe that do not heat is without heating, because of the influence that is subjected to heating atmosphere around it, so its temperature is generally about 30 ℃.
The above-mentioned 120-260 of being in ℃ temperature range constant or that change, be divided into three heating-up temperature sections is generally three heating-up temperature sections of 120 ℃～200 ℃, 160～240 ℃, 190～260 ℃, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
Preferably, the above-mentioned 120-260 of being in ℃ temperature range constant or that change, be divided into three heating-up temperature sections is generally three heating-up temperature sections of 140 ℃～180 ℃, 160～220 ℃, 200～240 ℃.
More preferably, above-mentioned the 120-260 of being in ℃ temperature range constant or that change, be divided into three heating-up temperature sections is generally three heating-up temperature sections of 160 ℃～180 ℃, 190～200 ℃ and 210 ℃～240 ℃.
It is by following part steps that the present invention adopts the spinning process of the device for spinning of being made up of above-mentioned thermotube:
1. molten polymer is extruded from spinneret orifice, and does preliminary cooling through quenching air window;
2. tow advances one of people or advances the immerging metal tube heater of two long 1.0～2.5m of people, external diameter φ 3.0～6.0mm, internal diameter φ 1.5～5.0mm respectively, in the occasion of using two heat pipes of the present invention, the temperature of described heat pipe can be in wherein at least one heating, and the temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections.The temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
A step is finished stretching, oriented crystalline in air flow field that the motion strand forms in this heating tube and the temperature field.
3. oil, add network, with 2000～6000 meters/minute, particularly 3000～6000 meters/minute winding speed is reeled and to be obtained described full stretchable filament.
Particularly, described heating heat pipe is in 120-260 ℃ temperature range constant or variation, that be divided into three heating-up temperature sections, forms a temperature field.
In the above-mentioned temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections, wherein one or two heating-up temperature section can not heat, and described humidity province of not heating refers to that promptly heat pipe temperature is 30 ℃.
The occasion that does not heat heat pipe is being arranged, though the described heat pipe that do not heat without heating, because of the influence that is subjected to heating atmosphere around it, its temperature is generally about 30 ℃.
The above-mentioned temperature range constant or that change, be divided into three heating-up temperature sections that is in 120～260 ℃ is generally three heating-up temperature sections of 120 ℃～200 ℃, 160～240 ℃, 200～260 ℃, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
Preferably, in spinning process of the present invention, described heat pipe heating-up temperature is three heating-up temperature sections of 140 ℃～180 ℃, 160～220 ℃, 200～240 ℃, and the winding speed of described long filament is 3000～6000 meters/minute scope.
More preferably, in spinning process of the present invention, heat pipe heating-up temperature in the device for spinning of the present invention is divided three heated zones making 160 ℃～180 ℃, 190～200 ℃ and 210 ℃～240 ℃.
Preferably, in spinning process of the present invention, heat pipe of the present invention long 1.5～2.5m, external diameter φ 4.0～5.0mm, minimum diameter φ 2.0～3.0mm.
For obtaining the fiber filament of homogeneous heating, dyeability excellence, be preferably, in spinning process of the present invention, the inwall longitudinal section curve of thermotube of the present invention is the hyperbolic-type of an inflexion, its internal diameter size is the scope of φ 2.5～4.5mm.
For obtaining the fiber filament of homogeneous heating, dyeability excellence, be preferably, in spinning process of the present invention, the inwall longitudinal section curve of thermotube of the present invention is an export-oriented crooked hyperbolic-type, its internal diameter size is φ 2.5～4.5mm.
For obtaining the coarse denier fiber long filament of homogeneous heating, dyeability excellence, be preferably, in spinning process of the present invention, the inwall longitudinal section curve of thermotube of the present invention is the parabolic type of an inflexion, and its internal diameter size is the scope of φ 2.5～4.5mm.
For obtaining the coarse denier fiber long filament of homogeneous heating, dyeability excellence, be preferably, in spinning process of the present invention, the inwall longitudinal section curve of thermotube of the present invention is an export-oriented crooked parabolic type, and its internal diameter size is the scope of φ 2.5～4.5mm.
High-strength for obtaining, the low fiber filament that shrinks, the inwall longitudinal section curve of thermotube of the present invention is with the different flared type of two end diameters, and the difference of its two ends internal diameter is in the scope of 2.0～4.5mm.
For obtain high to shrink, the fiber filament at thin dawn to thick dawn of three different (iso-fineness, different cross section, different contractions) of excellent performance, be preferably, in spinning process of the present invention, the inwall longitudinal section curve of thermotube of the present invention is one to have the reducing shaped form more than two sections.Particularly reel and obtain described full stretchable filament with 3000～6000 meters/minute winding speed.
Particularly preferably be, in spinning process of the present invention, device for spinning of the present invention adopts two heat pipes, to spin three different multifilament.
In the device for spinning of thermotube of the present invention, heating plate in each heat pipe and heating wire are heated with 5～75W/ power energising, making wherein, the workspace temperature remains on aforesaid scope.
Thermotube of the present invention and to adopt this thermotube to carry out the principles illustrated of spinning as follows.
Each rhizoid in the open tow (that is, the tow under the non-boundling state) is when the heat pipe high speed is moved, and the tow surface rubs fully with air-flow and contacts, and at this moment, the speed of service of tow is big more, and then frictional force is also big more, causes spinning tension also to increase.Regulate the temperature field in the heat pipe again, can make the yield stress of tow stress greater than fiber.At this moment, adjust draw ratio, realize the purpose of heating drawing-off.
Change the tube wall internal diameter of thermotube, regulate draft speed, can change the air flow field in the thermotube, thereby, fiber suffered windage resistance and drawing point thereof in heat pipe can be changed.Simultaneously, utilize the zone of heating and the heat-insulation layer of heat pipe of the present invention, regulate and obtain different temperature fields, formed the nonequilibrium system of a stable state of (reeling and extracting) from input (shower nozzle) to output.
From above-mentioned theory, in the phase transition process of above-mentioned non-equilibrium (thin neck oriented crystalline), the critical parameters in the described stationary zones, that is, in addition strict control of the variation of temperature, stress and slack time (that is heat pipe length).In the present invention, promptly finish by thermotube.
At first, see Fig. 1.Figure 1 shows that the schematic diagram of the air flow field effect in the thermotube of the present invention.
1. fiber suffered stress Principles of Regulation in air flow field
According to aerodynamic principle, a fibre diameter is d
F(radius r
F), when in the heat pipe that becomes diameter D (x) (radius R (x)), moving, obtain the radial velocity V of inner air tube by the laminar flow theory downwards
a(r, x) as follows:
To the r integration, can get:
As R (x) when diminishing, V
A1(r x) increases, otherwise, reduce; When r diminishes, V
A1(r x) increases, otherwise, reduce; During r=0, V
A1(0, x)=V
FWhen r=R (x), V
A1(R, x)=0.The opposite heat tube spinning technique has the root fiber in the tow,
(center symmetrical distribution)
R
e=2V
FrR/v
0ν
0=air movement viscosity V
Fr=V
F-An V
FrThe relative speed of service of=air
And the windage coefficient
λ
0=air thermal conductivity factor;
ζ=8[x/2R
eR]
0.5X is the heat pipe original position.
Obviously, along with tow moves to the heat pipe below, x, Re, changes such as R, ζ changes, α
0fChange after the diameter α
0fChanging respectively in heat pipe.When diameter diminishes, α
0fIncrease, that is, tow frictional force increases, vice versa.Thereby, realize STRESS VARIATION keynote joint.
Fiber in the temperature field suffered stress Principles of Regulation in heat pipe, from the thermal balance type of fiber
And air flow thermal balance type
As can be known: R (x) diminishes T
0(r x) distributes, and (r, x) distribution all changes T, causes the stable increase of tow.3. oriented crystalline and orientation induced crystallization fiber under stress, temperature, velocity field effect, produce orientation and oriented crystalline in the fiber macromolecular structure in forming process:
Wherein, Δ n=birefringence characterizes degree of orientation; A
0p=stress optical coefficient, τ
m-relax time spectrum.When the stress increase,
Increase Δ
nIncrease.
Birefringence
nIncrease, can make crystallization rate constant k (T, Δ
n) increase.10
3-10
5Doubly.Thereby, cause being orientated fast induced crystallization.Thereby, reach and regulate fiber orientation and crystallization.
4. fibre structure and property relationship
Fibre structure also determines fibre property.For example, filament contraction
S=K(1-θ)f
a+b
Filament contraction is directly proportional with the degree of orientation, with the degree of crystallinity Δ
nBe inversely proportional to.
Adopt the heat pipe of similar and different shape, state, adopt different spinning techniques simultaneously, can carry out the spinning of same component or different components, obtain the different tow of structure, obtain the three different long filaments and the pattern silk of many components such as one-component, two components then.
Description of drawings
Figure 1 shows that the air flow field effect schematic diagram in the thermotube of the present invention.
Figure 2 shows that the cross-sectional schematic that its axis longitudinal section is the thermotube of flared type in one embodiment of the present of invention.
Figure 3 shows that its axis longitudinal section is the cross-sectional schematic of the thermotube of export-oriented protruding song (that is hyperbola) type in one embodiment of the present of invention.
Figure 4 shows that its axis longitudinal section is the cross-sectional schematic of the thermotube of inflexion (hyperbola) type in one embodiment of the present of invention.
Be respectively shown in Fig. 5,6 that its axis longitudinal section is the cross-sectional schematic of two curve iterative thermotubes among two embodiment of the present invention.
Figure 7 shows that the spinning line schematic diagram of the device for spinning that adopts thermotube of the present invention.
Among the figure, 1 is spinnerets, and 2.1,2.2 are respectively the tow that enters each heat pipe, and 3 is thread guide, and 4.1,4.2 is two heat pipes, and 5 is the nozzle of interlace, and 6 is coiler device.A is a zone of heating, and b is a heat-insulation layer.D is the heat pipe internal diameter.
Below, with reference to accompanying drawing, in conjunction with the embodiments, illustrate in greater detail the present invention.
Embodiment 1
Use export-oriented protruding bent hyperbolic-type thermotube to spin the spinning technique and the device of 120 D/36f terylene
Use an export-oriented protruding bent hyperbolic-type thermotube as shown in Figure 3, the spinnerets spinning polyester filament in 36 holes.The long 1.5m of described thermotube, internal diameter 2.0～4.5mm.Apart from spinnerets 80cm.The hole diameter of spinneret is 0.23mm, L/D=2.5.Spinning temperature is 290 ℃.The heat pipe heating-up temperature is set at 180 ℃, three sections of 200 ℃ and 220 ℃.Spinning body temperature is 280～290 ℃ of scopes.
The cooling quench speed of quenching air window is 0.4m/ second, 25 ℃ of temperature, and the RH of air is 65%.Make the heat pipe Homogeneouslly-radiating, thereby, between strand, heat pipe and quenching air window, set up stable hot conducting system.
Use the export-oriented protruding bent type thermotube spinning of present embodiment, winding speed is 4200 meters/minute, the inherent viscosity of section [η]=0.65dl/g, and the aperture of spinnerets is 0.23, hole count is 48 holes.The total denier of spinning fibre reaches 120dtex.The yarn strength of spinning is 3.5CN/dtex, elongation 35%, and stretching irregular is 4.2%, and the Wu Site yarn unevenness is 1.05%, and boiling water shrinkage is 8%.
The various performance indications of above-mentioned polyester filament are to adopt conventional method and the instrument of measuring the polyester drafted fibre in the suitability for industrialized production to carry out, and the standard of being abideed by is GB8960/88.
Embodiment 2
Use the spinning technique and the device of introversive protruding bent hyperbolic-type thermotube spinning 120D/36f terylene
Use an introversive protruding bent hyperbolic-type thermotube as shown in Figure 4, the spinnerets spinning polyester filament in 36 holes.The heat pipe heating-up temperature is set at 130 ℃, three sections of 160 ℃ and 190 ℃.Other is with embodiment 1.
The total denier of spinning fibre reaches 120dtex.The intensity of the long filament of spinning is 3.2CN/dtex, elongation 42%, and stretching irregular is 4.4%, and the Wu Site yarn unevenness is 1.05%, and boiling water shrinkage is 62%.
Embodiment 3
Use the spinning technique and the device of the cation-modified terylene of wave shaped form thermotube spinning 120D/36f
Except using a wave shaped form thermotube as shown in Figure 5, described curve is hyperbolic-type, spinning temperature is 284 ℃, the heat pipe heating-up temperature is set at 180 ℃, three sections of 200 ℃ and 220 ℃, the inherent viscosity of section [η]=0.60dl/g, moisture content is 28ppm, spinning speed 3500m/ branch, other is as embodiment 1, and spinning obtains the low silk that shrinks of cation-modified terylene.The total denier of spinning fibre reaches 128dtex.The yarn strength of spinning is 3.15CN/dtex, elongation 38%, and stretching irregular is 4.4%, and the Wu Site yarn unevenness is 1.07%, and boiling water shrinkage is 30%.
Embodiment 4
Use the spinning technique and the device of the high silk that shrinks of a cation-modified terylene of export-oriented convex curve type thermotube spinning 120D/36f
Except using an export-oriented convex curve type thermotube as shown in Figure 3, described curve is parabolic type, spinning temperature is 284 ℃, the heat pipe heating-up temperature is set at 130 ℃, three sections of 160 ℃ and 190 ℃, winding speed is outside 3000m/ divides, and other is as embodiment 3, and spinning obtains cation-modified terylene high-shrinkage filament.The total denier of spinning fibre reaches 128dtex.The yarn strength of spinning is 3.0CN/dtex, elongation 35%, and stretching irregular is 4.4%, and the Wu Site yarn unevenness is 1.10%, and boiling water shrinkage is 58%.
Embodiment 5
One of the spinning technique of the polyester multifilament of use double diameter-changeable heat pipe spinning 200d/72f and device heat pipe use an export-oriented protruding bent hyperbolic-type thermotube as shown in Figure 3, internal diameter 2.5-4.5mm, the heat pipe heating-up temperature is set at 160 ℃, three sections of 190 ℃ and 220 ℃, winding speed 5000m/ branch.Heat pipe two is except using the linear pattern heat pipe, internal diameter 3.3cm, and the heat pipe heating-up temperature is set at 180 ℃, and outside three sections of 180 ℃ and 220 ℃, other is as embodiment 1.Spinning obtains terylene one-component contractile filaments.The total denier of spinning fibre reaches 200 dtex/72f.Wherein, heat pipe one is 120d/36f, and heat pipe two is 80d/36f.The yarn strength of spinning is 3.52CN/dtex, elongation 30%, and stretching irregular is 4.2%, and boiling water shrinkage is 32%, and the boiling water shrinkage difference is 18%.
Embodiment 6
Use the double diameter-changeable heat pipe to spin the spinning technique and the device of three different polyster fibre multifilament
One of heat pipe uses an introversive protruding bent hyperbolic-type thermotube as shown in Figure 4, internal diameter 3.5mm, and heating-up temperature is constant 150 ℃; 48 holes, corresponding left side, d=0.2, the spinnerets of 4d=2.5; Heat pipe two uses undaform heat pipe as shown in Figure 5, internal diameter 3.3mm, and the heat pipe heating-up temperature is set at 200 ℃, three sections of 240 ℃ and 255 ℃.The spinnerets of 16 holes, corresponding right side, trilobal, the long 0.3mm of leaf, the wide 0.1mm of leaf, hole depth 1.2.Other is as embodiment 1, and spinning obtains the three different multifilament of three different (different cross section, iso-fineness, different contractions).The yarn strength of spinning is 3.4CN/dtex, elongation 35%, and stretching irregular is 4.2%, and boiling water shrinkage is 36%, and the boiling water shrinkage difference is 28%, and the iso-fineness ratio is 2.5: 5=1: 2.
Embodiment 7
Use the double diameter-changeable heat pipe to spin the spinning technique and the device of cation-modified terylene (CDPET)/terylene (PET) fiber multifilament
Except inherent viscosity [the η]=0.65dl/g of PET section, outside inherent viscosity [the η]=0.60dl/g of CDPET section, other spinning technique of PET is as embodiment 1, and other spinning technique of CDPET is as embodiment 4, spinning speed 4500m/ branch.Spinning obtains cation-modified terylene (CDPET)/terylene (PET) fiber multifilament.The total denier of spinning fibre reaches 240dtex/72f.The yarn strength of spinning is 3.4CN/dtex, elongation 43%, and boiling water shrinkage is 29%, boiling water shrink rate variance is 28%.
Embodiment 8
Use the double diameter-changeable heat pipe to spin the spinning technique and the device of cation-modified terylene (CDPET)/terylene (PET) fiber multifilament
Except PET correspondence hyperbolic-type as shown in Figure 4, the heat pipe one of internal diameter size 2.5～3.5mm, outside inherent viscosity [the η]=0.60dl/g of CDPET section, other spinning technique of PET is as embodiment 1, and other spinning technique of CDPET is as embodiment 4, spinning speed 4500m/ branch.Spinning obtains cation-modified terylene (CDPET)/terylene (PET) fiber multifilament.The total denier of spinning fibre reaches 240dtex/72f.The yarn strength of spinning is 3.4CN/dtex, elongation 43%, and boiling water shrinkage is 29%, boiling water shrink rate variance is 28%.
Embodiment 9
Use the spinning technique and the device of the different contractile filaments of two heat pipe spinning terylene one-components
Adopt a linear pattern heat pipe as heat pipe one, its internal diameter is 3.3mm, and long 1.65cm does not heat, and, remains in about 30 ℃ temperature that is.Another heat pipe is respectively the flared type heat pipe of 2.5mm and 3.8mm (near spinnerets end) for its two ends internal diameter, and the heat pipe heating-up temperature is set at 150 ℃, three sections of 180 ℃ and 210 ℃.Outside inherent viscosity [the η]=0.65dl/g of CDPET section, 290 ℃ of spinning temperatures, section moisture content 25ppm, The hole diameter of spinneret 0.23mm, L/D=2.5, cooling quench speed 0.4m/ second, 25 ℃, RH65%.Winding speed 4200m/ branch.Spinning obtains the different contractile filaments of terylene one-component.The total denier of spinning fibre reaches 200dtex/72f (wherein heat pipe one is 125dtex/48f, and heat pipe two is 75dtex/24f).The yarn strength of spinning is 3.48CN/dtex, elongation 3%, and boiling water shrinkage is 27%, boiling water shrink rate variance is 20%.
Embodiment 10
Use the spinning technique and the device of two heat pipe spinning terylene one-component three different silks
Heat pipe one adopts the linear pattern heat pipe, and its internal diameter is 3.3mm, long 1.65cm, and the heat pipe heating-up temperature is set at 180 ℃, three sections of 200 ℃ and 250 ℃.Heat pipe two employings one introversive protruding bent hyperbolic-type heat pipe as shown in Figure 4, internal diameter 1.5～4.0mm.Do not heat, promptly its temperature is about 30 ℃.The hole diameter of spinneret 0.24mm, L/D=2.5.
The long 0.3mm of three leaf leaves of the spinnerets in 24 holes, the wide 0.1mm of leaf, the dark 0.6mm of leaf.The spinnerets single hole aperture 0.2mm in 36 holes, hole depth 0.6mm.Spinning speed 5200m/ branch.Other is as embodiment 9, and spinning obtains terylene one-component three different contractile filaments.The total denier of spinning fibre reaches 150dtex/796f (68dtex/36f+48dtex/36f+36dtex/24f three leaves).Three different intensity of spinning are 3.6CN/dtex, elongation 30%, and boiling water shrinkage is 32%, boiling water shrink rate variance is 21%.
In sum, spinning process of the present invention is to adopt one or more above-mentioned thermotube, by above-mentioned one or more thermotube is implemented different inner wall curve and temperature, 2000～8000 meters/minute, particularly under 3000～6000 meters/minute the spinning speed, can form different air flow field and temperature field mutually, under tension force and heat effect, make the inside of silk that stress induced crystallization and thermotropic crystallization take place; By this, regulate the crystalline temperature and the degree of crystallinity of silk, by this, make from the thin dawn to the thick dawn all excellent multifilament of (20dtex-300dtex/ silk, 0.4-6dtex/ single fiber), dyeing uniformity, stainability, intensity and elongation.Described multifilament is by forming as washing shrinkage, degree of crystallinity, the different monofilament of dyeability.By this, enlarge the kind of the hot-pipe spinning of synthetic fiber.The silk of institute of the present invention spinning comprises by grey long filament, the three different long filaments of melt spinning series, profiled filament series etc. such as terylene, modified poly ester generation, nylon 6 and nylon 66 and meets cospinning long filament etc.
Thermotube of the present invention and device for spinning thereof design, manufacturing is easy, energy consumption is low, and is easy to maintenance; Applicable to multiple occasion; Adopt the spinning process of thermotube of the present invention and device for spinning to make synthetic fiber filament spinning technique flow process weak point, easy operating; With low cost, can spin many kinds of polyester silk of arbitrary kind of (20dtex-300dtex/ silk, 0.4-6dtex/ single fiber) from the thin dawn to the thick dawn.
Claims (12)
1. the thermotube of a synthetic fiber production usefulness is characterized in that, described thermotube structure is as follows:
The heating tube that a kind of its middle formation tensile fiber passage, tube wall are made of zone of heating and heat-insulation layer, the longitudinal section curve of its inside pipe wall is the curve of variation, that is and, pipe cross circular section internal diameter can change.
2. thermotube as claimed in claim 1 is characterized in that, described thermotube is the immerging metal tube heater of long 1.0～2.5m, external diameter φ a 3.0～6.0mm, internal diameter φ 2.0～5.0mm.
3. thermotube as claimed in claim 1 is characterized in that, the inwall longitudinal section curve of described thermotube is the hyperbolic-type of an extroversion or introversive protruding song, and its internal diameter size is the scope of φ 2.5～4.5mm.
4. thermotube as claimed in claim 1 is characterized in that, the inwall longitudinal section curve of described thermotube is a parabolic type, and its internal diameter size is the scope of φ 2.5～4.5mm.
5. thermotube as claimed in claim 1 is characterized in that, the inwall longitudinal section curve of described thermotube is the different flared types of two end diameters, and the difference of its two ends internal diameter is in the scope of 2.0～4.5mm.
6. thermotube as claimed in claim 1 is characterized in that, the inwall longitudinal section curve of described thermotube is one to have the reducing shaped form more than two sections.
7. synthetic fiber production device for spinning of forming by spinning device, thread plate, heat pipe and coiler device etc., it is characterized in that, described device comprises that the above-mentioned thermotube more than one or two reaches zero～two not thermotubes, described heat pipe is the immerging metal tube heater of length 1.0～2.5m as claimed in claim 1, external diameter φ 3.0～6.0mm, internal diameter φ 2.0～5.0mm, and its temperature is for being in the constant or excursion in the room temperature-260 ℃.
8. synthetic fiber production device for spinning as claimed in claim 7, it is characterized in that, described device is adopting two the above reducings or not during thermotube, the temperature of described heat pipe is in wherein at least one heating, and the temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
9. synthetic fiber production device for spinning as claimed in claim 8, it is characterized in that, particularly, described heating heat pipe is in 120-260 ℃ temperature range constant or variation, that be divided into three heating-up temperature sections, the temperature range of described three heating-up temperature sections is generally three heating-up temperature sections of 120 ℃～200 ℃, 160～240 ℃, 200～260 ℃, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
10. synthetic fiber production spinning process, described method comprises the steps:
(1) molten polyester is extruded from spinneret orifice, and does preliminary cooling through quenching air window;
(2) tow enters one or enter two above heating tubes respectively, and a step is finished stretching, oriented crystalline in air flow field that the motion strand forms in this heating tube and the temperature field;
(3) oil, add network, reeling with 2000～8000 meters/minute winding speeds obtains described full stretchable filament;
It is characterized in that,
In above-mentioned spinning process, described heat pipe is aforesaid right requirement 1～6 a described heat pipe, and described device for spinning is the described device for spinning of claim 7.
11. synthetic fiber production spinning process as claimed in claim 10, it is characterized in that, described device is adopting two above reducings or not during thermotube, the temperature of described heat pipe is in wherein at least one heating, and the temperature range that is in the constant of room temperature-260 ℃ or changes, be divided into three heating-up temperature sections, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
12. synthetic fiber production spinning process as claimed in claim 11 is characterized in that,
Described heating heat pipe is in 120-260 ℃ temperature range constant or variation, that be divided into three heating-up temperature sections, the temperature range of described three heating-up temperature sections is three heating-up temperature sections of 120 ℃～200 ℃, 160～240 ℃, 200～260 ℃, the temperature range of described three sections is in the relation that increases progressively that comprises the stage that maintains an equal level, to form a temperature field.
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| CNB991200004A CN100374631C (en) | 1999-11-11 | 1999-11-11 | Reducing thermotube and spinning device and method using the same |
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| CNB991200004A CN100374631C (en) | 1999-11-11 | 1999-11-11 | Reducing thermotube and spinning device and method using the same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333730B (en) * | 2007-06-29 | 2010-11-10 | 赖芬豪泽机械工厂有限及两合有限公司 | Device for manufacturing spun-bonded fibre net |
| CN101403153B (en) * | 2008-10-20 | 2011-10-19 | 桐乡市中维化纤有限公司 | Hart dacron thread and its production technique |
| CN105839207A (en) * | 2016-05-09 | 2016-08-10 | 桐乡市中辰化纤有限公司 | Production method of ultralow shrinkage bright fully drawn yarn (FDY) |
| CN109483851A (en) * | 2018-12-28 | 2019-03-19 | 苏州聚复高分子材料有限公司 | A kind of technique controlling polymer crystallization degree in extrusion process |
| CN115161781A (en) * | 2022-06-23 | 2022-10-11 | 东华大学 | Hybrid gel filament forming method |
| CN116716670A (en) * | 2023-06-19 | 2023-09-08 | 桐昆集团浙江恒通化纤有限公司 | Polyester pre-oriented yarn for direct weaving and preparation method thereof |
| CN117248284A (en) * | 2023-08-08 | 2023-12-19 | 浙江佳宝聚酯有限公司 | Process for producing chemical regenerated cationic filament by heat pipe method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4902461A (en) * | 1987-03-20 | 1990-02-20 | Barmag, Ag | Method for heating an advancing yarn |
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1999
- 1999-11-11 CN CNB991200004A patent/CN100374631C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101333730B (en) * | 2007-06-29 | 2010-11-10 | 赖芬豪泽机械工厂有限及两合有限公司 | Device for manufacturing spun-bonded fibre net |
| CN101403153B (en) * | 2008-10-20 | 2011-10-19 | 桐乡市中维化纤有限公司 | Hart dacron thread and its production technique |
| CN105839207A (en) * | 2016-05-09 | 2016-08-10 | 桐乡市中辰化纤有限公司 | Production method of ultralow shrinkage bright fully drawn yarn (FDY) |
| CN109483851A (en) * | 2018-12-28 | 2019-03-19 | 苏州聚复高分子材料有限公司 | A kind of technique controlling polymer crystallization degree in extrusion process |
| CN115161781A (en) * | 2022-06-23 | 2022-10-11 | 东华大学 | Hybrid gel filament forming method |
| CN116716670A (en) * | 2023-06-19 | 2023-09-08 | 桐昆集团浙江恒通化纤有限公司 | Polyester pre-oriented yarn for direct weaving and preparation method thereof |
| CN117248284A (en) * | 2023-08-08 | 2023-12-19 | 浙江佳宝聚酯有限公司 | Process for producing chemical regenerated cationic filament by heat pipe method |
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| CN100374631C (en) | 2008-03-12 |
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