CN1250784C - Polyester fiber and production method therefor - Google Patents
Polyester fiber and production method therefor Download PDFInfo
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- CN1250784C CN1250784C CNB018029469A CN01802946A CN1250784C CN 1250784 C CN1250784 C CN 1250784C CN B018029469 A CNB018029469 A CN B018029469A CN 01802946 A CN01802946 A CN 01802946A CN 1250784 C CN1250784 C CN 1250784C
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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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
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- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
A polyester fiber which has physical properties such as a double refraction delta n of up to 0.07, an elongation after fracture of at least 80%, and a specific weight of at least 1.35 g/cm<3> and is suitable for a draw-texturing raw yarn, and which is produced by cooling polyester filaments melt-spun from spinnerets to up to a glass transition temperature by a cooling air while filaments are being taken up by a take-up roller at at least 3000 m/min, and by heating them to above a glass transition temperature while they are being wound up from the take-up roller into a package by a winding device.
Description
Technical field
The present invention relates to polyester fiber and manufacture method thereof, in more detail, particularly about draw false twisting processing employed polyester fiber of precursor and manufacture method thereof.
Background technology
Draw false twisting processing is extensive use of with the employed polyester fiber of precursor and roughly is called POY (partially oriented yarn) semi-drawing silk.This semicrystalline polyester drawn yarn is made by the following method, the polyester of molten spun from spinning head, on one side this is spun tow with the traction of the high speed more than the 3000m/min, solidify with the cooling air cooling on one side.
By this high speed spinning traction resulting polyester semi-drawing silk, become its elongation at break and be 80% or more, birefringence n is below 0.07, proportion is discontented with 1.35g/cm
3Physics value.In the past, with this semicrystalline polyester drawn yarn is draw false twisting processing precursor, under the situation of processing the draw false twisting silk of representing kind 75d-36f (75dtx-36f), at process velocity is that 900～1000m/min, machine tensions are to carry out draw false twisting processing under the condition of 40～50cN, obtains permanent elongation and is about 20～25% bulky yarn.The permanent elongation of this bulky yarn is about 20～25% scope than higher, thereby, even in the high order operation of operation or knitting process of weaving cotton cloth, use, can not produce fracture of wire yet, can carry out stable operation.
But, to improve productivity is purpose, draw false twisting processing is risen to more than the 1200m/min with speed, in addition, tension force when stablizing this High-speed machining is inhomogeneous and to make machine tensions be that 55cN is when above, if with the semicrystalline polyester drawn yarn of above-mentioned physics value as draw false twisting processing use precursor, can only obtain residual elongation at the bulky yarn below 20%.Because the residual elongation of bulky yarn is below 20%, so, when being used in the high order operation of weave cotton cloth operation or knitting process, usually fracture of wire can take place, cause stablizing that the degradation problem takes place under operation, the braided fabric quality.
Summary of the invention
The purpose of this invention is to provide and a kind ofly compare with condition in the past, though draw false twisting processing conditions High Level and high-tensionization, also can obtain the high bulky yarn of permanent elongation as the polyester fiber of draw false twisting processing with precursor.
Another object of the present invention provides a kind ofly to be compared with condition in the past, though draw false twisting processing conditions High Level and high-tensionization, also can obtain the high bulky yarn of permanent elongation as the manufacture method of draw false twisting processing with the polyester fiber of precursor.
A kind of process velocity is that 1200m/min is above even a further object of the present invention provides, machine tensions is 55cN when above, also can obtain permanent elongation and be polyester fiber and manufacture method thereof that the draw false twisting of the bulky yarn 20% or more is processed the usefulness precursor.
In order to achieve the above object, the feature of polyester fiber of the present invention is, has its birefringence n and be below 0.07, elongation at break is more than 80%, proportion is 1.35g/cm
3Above physics value.
In addition; in order to achieve the above object; the feature of the manufacture method of polyester fiber of the present invention is; on one side will be from the spun polyester tow of spinning head fusion with the speed drawing more than the 3000m/min with carry-over pinch rolls; cool off below the vitrification point with cooling air on one side; then; during extremely being wound into package with batching apparatus from above-mentioned carry-over pinch rolls; be heated to temperature and be higher than the temperature of vitrification point, make that its physics value becomes that birefringence n is below 0.07, elongation at break is more than 80%, proportion is 1.35g/cm
3More than.
As indicated above, polyester fiber of the present invention is because its proportion is at 1.35g/cm
3More than, therefore, can carry out the crystallization of molecule in the fiber, even draw false twisting process velocity high speed, increase machine tensions, also can not produced the tensile strength of fracture of wire.In addition, except the proportion height, because birefringence n is 0.07 below, elongation at break is more than 80%, thereby the permanent elongation that can make the bulky yarn after draw false twisting is processed is more than 20%.Therefore, even this bulky yarn is supplied with the high order operations such as operation, knitting process of weaving cotton cloth, can not produce fracture of wire, stably operation yet.Moreover, in the high order operation, because can fracture of wire, so can obtain high-quality braided fabric.
Brief description of drawings
Fig. 1 is the skeleton diagram of the device of the illustration manufacture method that is used to implement polyester fiber of the present invention.
Fig. 2 is the employed cross-sectional side view of illustration Fig. 1 device, and the B-B that is Fig. 3 is to view.
Fig. 3 is that the A-A of Fig. 2 is to view.
Fig. 4 is the skeleton diagram of another kind of form of the device of the illustration manufacture method that is used to implement polyester fiber of the present invention.
Fig. 5 is the skeleton diagram of illustration draw false twisting device.
The optimised form that carries out an invention
Polyester fiber of the present invention, by have fiber axis to birefringence n be below 0.07, elongation at break is more than 80%, proportion is 1.35g/cm
3The semi-drawing silk (POY) of above physics value is formed.Preferably, wish that elongation at break is 80～140%, proportion is 1.35～1.385g/cm
3Polyester fiber of the present invention with this physics value is specially adapted to draw false twisting processing and use precursor, even draw false twisting processing conditions high speed and high-tensionization also can become permanent elongation and be 20～25% the interior bulky yarn in high zone.
Be used for polyester of the present invention, as long as it is just passable to have fiber formation property, not special the qualification, but, reasonablely be the polyester that main reeling unit is made of terephthalic acid (TPA) ethene, be more preferably, the terephthalic acid (TPA) ethylene unit is the linear polyester of 85% above content, and best is that the terephthalic acid (TPA) ethylene unit is the linear polyester of 95% above content.
The dicarboxylic acids that combined polymerization is used in above-mentioned polyester has for example aromatic binary carboxylic acid and the functional derivatives thereof of M-phthalic acid, biphenoxyl ethane dicarboxylic acids, diphenyl-4,4 dicarboxylic acids, biphenoxyl ethane dicarboxylic acids etc.; Aliphatic dicarboxylic acid and functional derivatives thereof such as adipic acid, decanedioic acid, butanedioic acid, glutaric acid; The alicyclic dicarboxylic acids of cyclohexane dioctyl phthalate etc. and functional derivatives thereof etc.
In addition, the ethylene glycol that combined polymerization is used in above-mentioned polyester has for example aliphatic ethylene glycol of diethylene glycol (DEG), trimethylene glycol, tetramethylene ethanol, neopentyl alcohol etc.; The alicyclic ethylene glycol of cyclohexane dimethyl (シ Network ロ ヘ キ サ Application ジ メ ノ one Le) etc.; Aromatic series ethylene glycol such as the epoxides additives of bisphenol-A, bisphenol-A etc.
Polyester fiber of the present invention is characterized in that, birefringence n is below 0.07, elongation at break is more than 80%, and proportion is 1.35g/cm simultaneously
3More than.That is to say, though semicrystalline polyester drawn yarn in the past has birefringence n and the roughly the same physics value of elongation at break,, because its proportion is less than 1.35g/cm
3, therefore, the degree of crystallinity height of molecule has big tensile strength in the fiber.
Thereby, in for example representative kind of draw false twisting processing silk is under the situation of 75d-36f (83dtx-36f), even the draw false twisting process velocity rises to more than the 1200m/min from general in the past 1000m/min, and, machine tensions is also brought up to more than the 55cN from the level of 49cN degree, fracture of wire can not take place yet, can guarantee stable draw false twisting processing, the permanent elongation of the bulky yarn that obtains has particularly reached 20～25% level more than 20%.
High speed by such draw false twisting process velocity has improved productivity, in addition, by high-tensionization, can suppress tension change, thereby can obtain high-quality bulky yarn.Further, the permanent elongation of processing resulting bulky yarn owing to draw false twisting is bigger, therefore, even with the weave cotton cloth high order operation of operation or knitting process of its supply, can not produce fracture of wire yet, can carry out stable operation, in addition, the braided fabric that obtains in weaving cotton cloth or weaving is high-quality.
The manufacture method of above-mentioned polyester fiber; the polyester of molten condition is spun from spinning head; on one side with carry-over pinch rolls with the spun polyester tow of this fusion with the speed drawing more than the 3000m/min; cool off below the vitrification point with cooling air on one side; afterwards; from carry-over pinch rolls to being wound into batching apparatus the operation of package, heat treated is to the temperature that is higher than vitrification point, makes that it becomes that birefringence n is below 0.07, elongation at break is more than 80%, proportion is 1.35g/cm
3More than.
Carry-over pinch rolls are to limit hauling speed by handover to make its surperficial volume extension of going up spin tow device also, by drivings on one's own initiative such as motors.Carry-over pinch rolls have one just passable, but preferably be provided with two, each carry-over pinch rolls is hung angle with the volume more than 90 ° respectively and is intervolved extension mutually.
In the manufacture method of polyester fiber of the present invention, need only the method that the spun polyester tow of fusion is cooled to below the vitrification point and use cooling air, then not special the qualification.For example, can adopt the one-sided mode of blowing cooling air that goes out tow from molten spinning, go out around tow whole to central part from molten spinning and to blow mode of cooling air or the like with shape entad.Utilize the mode of the former one-sided blowing, molten spinning goes out tow along the direction walking tow vertical with the direction of cooling air blowing, produce air drag, therefore, be easy to improve the tension force that this spins tow in the time of cooling on one side, as a result, be preferably in the scope of 3000～4500m/min as the hauling speed of carry-over pinch rolls.Can make by means of this hauling speed that the birefringence n of polyester fiber is below 0.07, elongation at break is more than 80%.
Under the situation of the type of cooling that goes out the latter who blows cooling air around tow whole from molten spinning, molten spinning goes out tow can show the linearity walking greatly from the spinning head to carry-over pinch rolls.If utilize the walking states of this linearity, cooling air is set and spins the zone that tow flows abreast in the downstream in cooling territory, just can apply by concurrent flow and reduce the stress abirritation that is cooled to the tension force that spins tow below the vitrification point.By means of this stress abirritation, even the hauling speed of carry-over pinch rolls rises to more than the 5000m/min, also birefringence n can be controlled at below 0.07, elongation at break is controlled at more than 80%.
Under the situation that adopts any type of cooling; in the follow-up operation of from carry-over pinch rolls to the batching apparatus, batching; by the tow that spins that is cooled to below the vitrification point is carried out heat treated once more and makes its temperature be higher than glass transition temperature, still can obtain polyester fiber of the present invention.By adopting this heat treated of carrying out with the temperature that is higher than glass transition temperature, can carry out the crystallization of molecule in the polyester fiber, make the proportion of polyester fiber reach 1.35g/cm
3More than.
In addition, as in the later operation of above-mentioned carry-over pinch rolls, not carrying out methods of heating treatment, also have the distance spinning head at least the zone more than the 30mm, below the 150mm to spin tow blow cooling air make its sharply cooling to improve the method for degree of crystallinity.But this method is compared with said method, owing to reduced the surface temperature of spinning head, thereby brought elongation at break to be easy to the problem that reduces and change.
Proportion is 1.35g/cm
3Can increase the tensile strength of polyester fiber when above, therefore, as draw false twisting processing precursor, even the draw false twisting process velocity more than the 1200m/min, machine tensions is under the bigger situation more than the 55cN, fracture of wire can not take place, can stably process, the permanent elongation of the bulky yarn that obtains has simultaneously particularly reached 20～25% level more than 20%.
The heat treated of carrying out in the later operation of carry-over pinch rolls is so long as any position between from carry-over pinch rolls to the batching apparatus can.In addition, heater (heater) can be the direct heating that directly contacts with heater; Or indirect hot with radiation or that the heating atmosphere produces.For example internal heater in carry-over pinch rolls is carried out heat treated in traction; Perhaps between former and later two carry-over pinch rolls, heater is set, directly heats or heat indirectly.
Fig. 1 illustration be used to implement the device of the manufacture method of polyester fiber of the present invention.
In Fig. 1, the 1st, spinning piece, the 2nd, cooling device, the 3rd, carry-over pinch rolls, the 4th, batching apparatus.
Spinning piece 1 is provided with measuring pump 5 and filament spinning component 6, and spinning head 7 is installed on filament spinning component 6, and this spinning head 7 is provided with a plurality of spray orifice 7a.Measuring pump 5 with a certain amount of supply filament spinning component 6, spins plurality of threads f from a plurality of spray orifice 7a of spinning head 7 with the polyester of melt extruded machine not shown in the figures fusion.
Cooling device 2 has cooling end body 8 along the one-sided configuration from spinning head 7 spun long filament f, from air blast 9 with cooling air with this cooling end body 8 of weight feed.Front at cooling end body 8 is provided with the blow-off outlet 10 that cowling panel is installed.Blow out the cooling air of equal distribution from this blow-off outlet 10, spun long filament f is cooled off.
Cooling device 2 usefulness cooling airs spin long filament f with many and are cooled to below the vitrification point of polyester.Many of cooling spin long filament f, and when applying finish by executing finish guide rail 11, boundling is after the 1 rhizoid bundle Y, by carry-over pinch rolls 3 tractions.
Carry-over pinch rolls 3 are made of front and back pair of rolls 3a, 3b, draw spun tow Y with the hauling speed more than the 3000m/min.Draw at a high speed by means of this, can control birefringence n that polyester spins tow Y and be below 0.07, elongation at break is more than 80%.In order to stabilize to certain speed from the hauling speed that spins tow Y that spinning head 7 is supplied with, carry-over pinch rolls 3 are for the first carry-over pinch rolls 3a, with after the extension of the volume more than the 90 ° angle volume extension, hang angle volume extension with the identical volume more than 90 ° with downside surface with the uper side surface of the second carry-over pinch rolls 3b.
Between a pair of carry-over pinch rolls 3a in front and back, 3b, be provided with heater 12.12 pairs of this heaters are cooled to the temperature that tow Y is heated to above vitrification point once more that spins of above-mentioned vitrification point walking after following between two carry-over pinch rolls 3a, 3b.By means of this heat treated, spin the molecular crystallineization in the tow Y (polyester fiber), become the high fiber of tensile strength thus.
Spin tow Y heat release in the peripherad air in walking on one side after the above-mentioned heat treated, by batching apparatus 4 be wound into package P on one side.Batching apparatus 4 usefulness axles 13 are supported package P, use touch roll 14 to push the surface of package Ps on one side, rotation on one side drives this package P, and coiling spins tow Y.The 15th, spin the reciprocating traverse mechanism of tow Y while make along the journey that axially moves back and forth, traverses of package P.
Fig. 2 and Fig. 3 illustration the heater 12 that is provided with between a pair of carry-over pinch rolls 3a, the 3b.The formation of heater 12 is that the length direction two ends that bend to the reflecting plate 20 of U word shape at section are provided with electrode 22a, 22b, between this electrode 22a, 22b halogen lamp 21 are housed.The radiation heat that halogen lamp 21 produces directly heats the tow Y that walks through the open side of reflecting plate 20, and simultaneously, the radiation heat that reflects through reflecting plate 20 heats indirectly to this tow Y, thus, tow Y is heated to above the temperature of vitrification point.
Illustrated heater 12 is non-contact type heaters, and is still self-evident, also can use the contact-type heater of armored electrothermal furnace etc.
Fig. 4 illustration be used to implement the device of another form of the manufacture method of polyester fiber of the present invention.
The manufacturing installation of the polyester fiber of Fig. 4, except the formation that stress mitigation portion is set in formation and its underpart of cooling device with the illustrative device of Fig. 1 was different, remainder was made of same structure.
Among Fig. 4,, cooling end body 48 is made tubular with the cooling device 42 of the different formations of Fig. 1.Be provided with the blow-off outlet 50 that constitutes by cylindric cowling panel in the inboard of this cooling end body 48, from the central part of spinning head 7 spun long filament f by this cylindric blow-off outlet 50.Quantitatively to supply with cooling air, make this cooling air be blown out to the entire circumference of spun long filament f equably from cylindric blow-off outlet 50 from air blast 49 to cooling end body 48.
Be provided with the stress mitigation portion 51 corresponding with spinning tow Y in the bottom of cooling device 42.Stress mitigation portion 51 be provided with from the blow-off outlet 50 of cooling device 42 towards below the air-flow that prolongs with inner core 52, air-flow be installed with urceolus 53 by annulus with concentric shape in its outside.Further, with urceolus 53 stress mitigation portion body 54 is installed around air-flow, from air blast 56 with cooling air with this stress mitigation portion body 54 of weight feed.
Adopt the device of Fig. 4, the cooling air that blows out by the cylindric blow-off outlet 50 of cooling device 42 from spinning head 7 spun long filament f cool off its all around, its temperature is become below the vitrification point.Then; as spun long filament f during by stress mitigation portion 51; air-flow becomes injection equipment with inner core 52 and air-flow with the annulus between the urceolus 53; cooling air is become and spin the equidirectional injection stream of long filament f; and parallel with it contact, make thus to spin long filament f accepts to reduce tension force under the state below the vitrification point stress mitigation.
Therefore, even the hauling speed of carry-over pinch rolls 3 rises to 5000m/min, the birefringence n that also can keep tow Y below 0.07, elongation at break is more than 80%.The action effect of other carry-over pinch rolls 3 or heater 12 is identical with the situation of Fig. 1.
When polyester fiber of the present invention used with precursor as draw false twisting processing, its advantage was, can improve the productivity of draw false twisting processing, can obtain superior in quality bulky yarn simultaneously.The draw false twisting method for working that is adopted is not special to be limited, and can adopt any of known draw false twisting method for working in the past.
Fig. 5 example illustrates with the polyester fiber of the present invention draw false twisting processing unit (plant) that processing is used with precursor as draw false twisting.
This draw false twisting processing unit (plant) is provided with heater 62, cooling device 63, false twister 64 in turn between donor rollers 61 and draw roll 65, and disposes batching apparatus 66 in the downstream of draw roll 65.In this embodiment, false twister 64 uses dish-type friction false twist device.
From package P draws polyester fiber Y by donor rollers 61 after, during stretching, twist with false twister 64 with draw roll 65, after this twisting is adjusted by heater 62 and cooling device 63, at false twister 64 downstream backtwistings, thus, make above-mentioned polyester fiber Y become bulky yarn Y '.This bulky yarn Y ' is batched by batching apparatus 66.
Embodiment 1～4
Use the polyester fiber manufacturing installation of Fig. 1, the spray orifice number of setting spinning head is that 36, the polymer spray volume of each spray orifice are that the design temperature of 1.2g/min, heater is 180 ℃, the hauling speed of each carry-over pinch rolls and batching apparatus with the friction speed of 3000m/min, 3500m/min, 4000m/min, 4500m/min, is made polyester fiber respectively.
Be determined at the fiber number (dtx), elongation at break (%), birefringence n, the proportion (g/cm that obtain the polyester fiber tow under each condition
3), obtain showing the result of 1-a.
Table 1-a
| Embodiment | Hauling speed m/min | Fiber number dtx | Elongation at break % | Birefringence n | Proportion g/cm 3 |
| 1 2 3 4 | 3000 3500 4000 4500 | 143 125 109 97 | 132 111 97 84 | 0.048 0.057 0.066 0.070 | 1.350 1.360 1.369 1.377 |
As indicated above, resulting the present invention with four kinds of polyester fibers of physics value with regulation as draw false twisting processing precursor, by means of draw false twisting processing unit (plant) shown in Figure 5, at process velocity is under the condition of 1400m/min, set the stretching ratio of stablizing machine tensions respectively, carry out draw false twisting processing.Its result illustrates with table 1-b.In table 1-b, also put down in writing simultaneously and can stablize the machine tensions (stablizing machine tensions) of implementing each draw false twisting processing.
From the table 1-b the result as can be seen, when processing is used with precursor as draw false twisting with polyester fiber with physics value of the present invention, even process velocity is the high-speed of 1400m/min, fracture of wire can not take place, can stably obtain permanent elongation at the bulky yarn more than 20%.
Table 1-b
| Embodiment | Machine tensions cN | Permanent elongation % |
| 1 2 3 4 | 60 58 60 59 | 20.1 22.5 25.2 26.4 |
Embodiment 5～7
Use the polyester fiber manufacturing installation of Fig. 4, the spray orifice number of setting spinning head is that 36, the polymer spray volume of each spray orifice are that the speed of the parallel airflow of 1.2g/min, stress mitigation portion is 1200m/min, the design temperature of heater is 180 ℃, the hauling speed of each carry-over pinch rolls and batching apparatus with the friction speed of 4000m/min, 4500m/min, 5000m/min, is made polyester fiber respectively.
Be determined at the fiber number (dtx), elongation at break (%), birefringence n, the proportion (g/cm that obtain the polyester fiber tow under each condition
3), obtain showing the result of 2-a.
Table 2-a
| Embodiment | Hauling speed m/min | Fiber number dtx | Elongation at break % | Birefringence n | Proportion g/cm 3 |
| 5 6 7 | 4000 4500 5000 | 143 125 109 | 120 98 87 | 0.046 0.061 0.069 | 1.355 1.360 1.368 |
As indicated above, resulting the present invention with three kinds of polyester fibers of physics value with regulation as draw false twisting processing use precursor, under the draw false twisting processing conditions identical, carry out draw false twisting and process with embodiment 1 situation.Its result illustrates with table 2-b.In table 2-b, also put down in writing simultaneously and can stablize the machine tensions (stablizing machine tensions) of implementing each draw false twisting processing.
In above-mentioned draw false twisting processing, by reducing each stretching ratio, add man-hour with the tension force that is lower than the machine tensions shown in the table 2-b, tension change can increase, and produces fracture of wire, and false twist yarn produces stain, inhomogeneous.On the contrary, improve stretching ratio, add man-hour with the tension force that is higher than the machine tensions shown in the table 2-b, the lint of monofilament fracture of wire increases.
Table 2-b
| Embodiment | Machine tensions cN | Permanent elongation % |
| 5 6 7 | 60 62 60 | 24.9 23.8 25.2 |
From the table 2-b the result as can be seen, when processing is used with precursor as draw false twisting with polyester fiber with physics value of the present invention, even process velocity is the high-speed of 1400m/min, fracture of wire can not take place, can stably obtain permanent elongation at the bulky yarn more than 20%.
Except with the parallel airflow speed of the stress mitigation portion among the embodiment 5～7 for the change 2400m/min, make polyester fiber with the condition identical with embodiment 5～7.Be determined at the fiber number (dtx), elongation at break (%), birefringence n, the proportion (g/cm that obtain the polyester fiber tow under each condition
3), obtain showing the result of 3-a.
Table 3-a
| Embodiment | Hauling speed m/min | Fiber number dtx | Elongation at break % | Birefringence n | Proportion g/ |
| 8 9 10 | 4000 4500 5000 | 143 125 109 | 130 115 95 | 0.043 0.053 0.064 | 1.363 1.362 1.365 |
As indicated above, resulting the present invention with three kinds of polyester fibers of physics value with regulation as draw false twisting processing use precursor, under the draw false twisting processing conditions identical, carry out draw false twisting and process with embodiment 1 situation.Its result illustrates with table 3-b.In table 3-b, also put down in writing simultaneously and can stablize the machine tensions (stablizing machine tensions) of implementing each draw false twisting processing.
From the table 3-b the result as can be seen, when processing is used with precursor as draw false twisting with polyester fiber with physics value of the present invention, even process velocity is the high-speed of 1400m/min, fracture of wire can not take place, can stably obtain permanent elongation at the bulky yarn more than 20%.
Table 3-b
| Embodiment | Machine tensions cN | |
| 8 9 10 | 62 63 62 | 26.3 26.2 26.5 |
Comparative example 1～3
Use is not provided with the device of heater in the polyester fiber manufacturing installation of Fig. 1, the spray orifice number of setting spinning head be 36, the polymer spray volume of each spray orifice be the hauling speed of 1.2g/min, each carry-over pinch rolls and batching apparatus respectively with the friction speed of 3000m/min, 3500m/min, 4000m/min, make polyester fiber.
Be determined at the fiber number (dtx), elongation at break (%), birefringence n, the proportion (g/cm that obtain polyester fiber market under each condition
3), obtain showing the result of 4-a.
Table 4-a
| Comparative example | Hauling speed m/min | Fiber number dtx | Elongation at break % | Birefringence n | Proportion g/cm 3 |
| 1 2 3 | 3000 3500 4000 | 143 125 109 | 135 108 93 | 0.044 0.056 0.068 | 1.332 1.335 1.338 |
As indicated above, resulting the present invention with three kinds of polyester fibers of physics value with regulation as draw false twisting processing use precursor, under the draw false twisting processing conditions identical, carry out draw false twisting and process with embodiment 1 situation.Its result illustrates with table 4-b.In table 4-b, also put down in writing the machine tensions that adds man-hour at each draw false twisting simultaneously.
From the table 4-b the result as can be seen, when processing is used with precursor as draw false twisting with the polyester fiber that do not possess physics value of the present invention, when process velocity is 1400m/min, fracture of wire can take place frequently, and, can not obtain permanent elongation at the bulky yarn more than 20%.
Table 4-b
| Comparative example | Machine tensions cN | Permanent elongation % |
| 1 2 3 | 60 59 61 | 12.3 13.6 13.5 |
In sum, according to polyester fiber of the present invention, because proportion is at 1.35g/cm
3More than, therefore, can carry out the crystallization of molecule in the fiber, even draw false twisting process velocity high speed, increase machine tensions, also can not produced the tensile strength of fracture of wire.In addition, except the proportion height, because birefringence n is 0.07 below, elongation at break is more than 80%, thereby the permanent elongation that can make the bulky yarn after draw false twisting is processed is more than 20%.Therefore, even this bulky yarn is supplied with the high order operations such as operation, knitting process of weaving cotton cloth, can not produce fracture of wire, stably operation yet.Moreover, in the high order operation, because can fracture of wire, so, high-quality braided fabric can be obtained.
Industrial application
The present invention can be used for the production of the polyester fiber of fiber industry, particularly is applicable to the expansion that precursor is used in draw false twisting processing.
Claims (4)
1, a kind of manufacture method of polyester fiber; on one side will be from the spun polyester tow of spinning head fusion with the speed drawing more than the 3000m/min with carry-over pinch rolls; cool off below the vitrification point with cooling air on one side; then; during extremely being wound into package with batching apparatus from described carry-over pinch rolls; be heated to temperature and be higher than the temperature of vitrification point, make that its physics value becomes that birefringence n is below 0.07, elongation at break is more than 80%, proportion is 1.35g/cm
3More than.
2, the manufacture method of the polyester fiber of putting down in writing according to claim 1 is characterized in that, cools off from the one-sided cooling air that blows of the spun polyester tow of described fusion, and simultaneously, the hauling speed that makes described carry-over pinch rolls is 3000～4500m/min.
3, the manufacture method of the polyester fiber of putting down in writing according to claim 1, it is characterized in that, blowing cooling air around the spun polyester tow of described fusion whole cools off, and cooling air is flowed along the direction parallel with direction of travel in the downstream, stress application relaxes, simultaneously, making the hauling speed of described carry-over pinch rolls is 3000～5000m/min.
4, according to the manufacture method of each polyester fiber of putting down in writing in the claim 1～3, it is characterized in that, is the manufacturing of draw false twisting processing with precursor.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP295483/00 | 2000-09-28 | ||
| JP2000295483A JP2005097750A (en) | 2000-09-28 | 2000-09-28 | Polyester fiber and method for producing polyester fiber |
| JP295483/2000 | 2000-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1392906A CN1392906A (en) | 2003-01-22 |
| CN1250784C true CN1250784C (en) | 2006-04-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB018029469A Expired - Fee Related CN1250784C (en) | 2000-09-28 | 2001-09-28 | Polyester fiber and production method therefor |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2005097750A (en) |
| KR (1) | KR100738518B1 (en) |
| CN (1) | CN1250784C (en) |
| TW (1) | TW568963B (en) |
| WO (1) | WO2002027081A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005298991A (en) * | 2004-04-08 | 2005-10-27 | National Institute Of Advanced Industrial & Technology | Method for heat-treating fiber and device for executing the same |
| CN101166851B (en) * | 2005-05-26 | 2010-07-14 | 日本Tmt机械株式会社 | Spun yarn taking-off apparatus |
| CN101490318B (en) * | 2006-07-27 | 2012-09-05 | 欧瑞康纺织有限及两合公司 | Method for the production of a curled synthetic thread |
| KR100954873B1 (en) * | 2007-12-28 | 2010-04-28 | 주식회사 효성 | High-strength Polyethyleneterephthalate fiber and its manufacturing method |
| JP5894871B2 (en) * | 2012-06-22 | 2016-03-30 | Ｔｍｔマシナリー株式会社 | Spinning and drawing equipment |
| CN102839432B (en) * | 2012-09-20 | 2015-03-25 | 苏州大学 | Preparation method of ultra-high-speed spinning polyester pre-oriented yarn |
| CN103074693A (en) * | 2013-01-18 | 2013-05-01 | 桐昆集团股份有限公司 | POY (Polyester Pre-Oriented Yarn) spinning and winding device with double yarn guide rollers |
| EP3312320B1 (en) | 2013-07-22 | 2022-03-16 | Murata Machinery, Ltd. | Carbon nanotube yarn production device |
| CN108823655A (en) * | 2018-08-29 | 2018-11-16 | 江苏鑫博高分子材料有限公司 | The cooling beaming device of spinning and the device for spinning with it |
| CN112831875B (en) * | 2020-12-30 | 2022-03-29 | 江苏德力化纤有限公司 | Preparation method of air-textured polyester composite yarn |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042288B2 (en) * | 1977-08-08 | 1985-09-21 | 帝人株式会社 | Polyester fiber manufacturing method |
| US4156071A (en) * | 1977-09-12 | 1979-05-22 | E. I. Du Pont De Nemours And Company | Poly(ethylene terephthalate) flat yarns and tows |
| US4415521A (en) * | 1982-03-15 | 1983-11-15 | Celanese Corporation | Process for achieving higher orientation in partially oriented yarns |
-
2000
- 2000-09-28 JP JP2000295483A patent/JP2005097750A/en active Pending
-
2001
- 2001-09-28 KR KR1020027006151A patent/KR100738518B1/en not_active IP Right Cessation
- 2001-09-28 TW TW090124044A patent/TW568963B/en not_active IP Right Cessation
- 2001-09-28 CN CNB018029469A patent/CN1250784C/en not_active Expired - Fee Related
- 2001-09-28 WO PCT/JP2001/008506 patent/WO2002027081A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002027081A1 (en) | 2002-04-04 |
| CN1392906A (en) | 2003-01-22 |
| KR20020060738A (en) | 2002-07-18 |
| JP2005097750A (en) | 2005-04-14 |
| KR100738518B1 (en) | 2007-07-11 |
| TW568963B (en) | 2004-01-01 |
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