CN1584136B - Production method of thin fibers - Google Patents
Production method of thin fibers Download PDFInfo
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- CN1584136B CN1584136B CN 200410057006 CN200410057006A CN1584136B CN 1584136 B CN1584136 B CN 1584136B CN 200410057006 CN200410057006 CN 200410057006 CN 200410057006 A CN200410057006 A CN 200410057006A CN 1584136 B CN1584136 B CN 1584136B
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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
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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
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
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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
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
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Abstract
A method for producing thin melt-spun partially-orientated fibers from polyester and further processing to short fiber by aid of a spinning device which comprising: at least one spinning assembly of a spinneret plate comprising capillary holes arranged in a ring shape; a cooling system symmetrical radially for cooling filament yarn with cool gas; an applying device for applying oil agent on the fiber tuft. The device is characterized in that: providing the flux to the spinning assembly and extruding the flux from the capillary holes on the spinneret plate to form melt filament yarn; flux infiltrating the circular surface at the upstream side of the spinneret plate; selecting the hydraulic diameter of the spinning capillary holes in a determined range; transferring the cooled filament yarn through the gap toward the inner circle of the oil agent applying device and applying oil/water mixture onto the filament yarn tow; abstracting the filament yarn tow applied with oil agent from the mobile draw-off godet; individual filament yarn having a titer of 1.5-4 denier and a minimum ultimate extension of 300.
Description
Technical field
The present invention relates to a kind of being used for produces thin, melt-spinning, low-oriented yarn (LOY ' s) so that further be processed into the method for staple fibre by means of a device for spinning from polyester, described device comprises: at least one has the spinning pack of a spinnerets, this spinnerets has the pore of the annular of being arranged in so that melt filament is from wherein coming out, the cooling system of one radial symmetric, cooling off this long filament and in this cooling system inside by the refrigerating gas that imports from outside to inside with respect to this endless tow is used for finish is applied to applying device on the endless tow.
Background technology
Become known for producing the method for staple fibre.With the polymer of melt spun for example polyester be main component, produce melt and it supplied with the spinning system, from spinneret orifice, extrude this melt and cool off this melt to form long filament.
In a stage of the processing that separates usually, fiber flow process (stage) just, wherein stretch, add heat treatment so that HEAT SETTING, lax and curling, the result obtains a long filament thigh that comprises a large amount of one filament, and every threads all has and further is processed into the required quality coefficient of textiles.This long filament thigh is cut into an expectation length, and what finally generate is the long segment length's silk (fiber, staple fibre) with a finite length that limits.At last, in spinnery,, or when these fibers and the natural fiber mixed fashionable finished product mixed filament that is processed into, then they are transformed into for example woven or knit materials of fabric with these fiber process finished product long filaments.
Can improve the economy of the phase I of this production line by the number of filaments that increases every spinning part.In order to go out a large amount of long filaments, there is the multiple cooling system of competition each other a production site.The cooling system of radial symmetric and the long filament from the spinnerets with hole annular of being arranged in and that be used for melt output is carried out spinning have maximum potentiality.
The jet core in center in this annular endless tow-wherein supply with cooling air-complex structure and be difficult to operation to this endless tow from inside to outside.
So that a kind of possibility of simple and easy operating to be provided around this endless tow and the cooling system of supplying with the cooling air from outside to inside cylindrically.Yet if will produce even long filament by the spinning with good reliability, this system requires harsh to operating condition.
The demand that more and more thinner long filament is increased day by day, and be an extra challenge to fiber number less than the demand that the microfiber of 1 DENIER increases day by day particularly.This is because on the one hand because the low economy variation that makes of throughput of each spinneret hole, on the other hand because of the unusual rapid wear of this spinning filament yarn.More fault can occur in spinning, the quality of this long filament becomes can not be satisfactory.
In cooling procedure, the fine denier in a large amount of long filaments and this melt filament bundle causes changing in this (long filament) bundle, and this situation is aggravated by the low spinning tension that is caused by low spinning speed.Bonding or filament breakage can appear thus.Highdensity long filament increases the mobile resistance that is subjected to of the cooling air of supply.The cooling air can not pass through this endless tow fully, and this can postpone in this endless tow inside the cooling of long filament.Consequently the characteristic of this long filament is inhomogeneous.
DE3708168 C2 has described a kind of cooling device that is used to cool off from the long filament of the melt-spinning of spinnerets, this spinnerets has by the spray silk pore that is arranged in annular and the cooling air feed mechanism of a radial symmetric, and this mechanism is positioned at the center of this long filament and direction outwardly.Yet the long filament of producing is thinless, so and because the output of little this device of quantity of this spray silk pore is uneconomic.(second hurdle is after 36 row reach) illustrated to have this cooling system that direction is an air feed mechanism from outside to inside in this document of being mentioned, and be limited in its scope that is suitable for using.Disclose a kind of spinning and cooling device that is used to produce uniform monofilament among the WO 01/98564A1, had a cooling air feed mechanism radial symmetric and from outside to inside in this device.The monofilament of producing is thin and make that owing to the quantity of single monofilament is little the production capacity of this device is limited.The details that provides in the file does not provide any instruction of exporting and should be further processed into the long filament of fiber about cooling from crinosity pore spinning head.
Document JP A 55-093816 relates to the endless filament yarn that production has a fineness, and this long filament is unsuitable for being processed into fiber.Do not have in this document explanation about when the polymer throughput of passing through spinning head is high to instruction from the cooling of the long filament of a crinosity pore spinning head.
A kind of as can be seen from document WO 01/88233A1 have the cooling system of an annular spinning head, an ecto-entad and a spinning system of an oil feeder system.Described is that for example to produce fiber number with the spinning speed of 1800m/min be that 2.13 DENIER, elongation at break are 220% monofilament.Yet, having only when using the injector head that only has row's pore just can obtain uniform monofilament, this makes that this processing method is uneconomical.But monofilament preorientation is suitable for being processed into endless filament yarn is unsuitable for being processed into fiber because suitable height of speed and elongation at break are low.
From the document of mentioning, clearly do not relate to use and have the device that the spinnerets that reaches 10000 pores is produced uniform fine filament.
Really, in traditional spinning processing method, can only make long filament have a thin fiber number by the throughput that reduces polymer simply.Yet the reliability of spinning and the uniformity of long filament are good inadequately.When keeping polymer throughput by this spinning pack constant, increase the quantity of the pore in the spinnerets, also can produce thin fiber number.Yet economy is without any improve.
Summary of the invention
Consider shortcoming described in the prior art, an object of the present invention is to avoid or reduce shortcoming well known in the prior art.
Concrete, an object of the present invention is to provide a kind of method that is used to produce fine filament, wherein can in the spinning system of the refrigerating gas feed mechanism that the cooling device with a radial symmetric and guides from outside to inside, produce this long filament, in the case, each spinning part is avoided occurring with filament breakage as much as possible with a large amount of long filament work and while and is bonded as the spinning fault of form, thereby can obtain uniform long filament by the spinning with good reliability.
Another object of the present invention provides a kind of production capacity that can be carried out economically promptly with abundance, and just the melt throughput of every spinning part is at least the method for the above-mentioned specified type of carrying out under 100kg/ hour the situation.
Another object of the present invention provides a kind of method of above-mentioned specified type, the refrigerating gas system of the method preferably, can keep the travel path uniform properties stable and this long filament of long filament not descend by making the possible mobile minimum of long filament, and or even preferably raise.
Last purpose of the present invention provides a kind of method that can produce the above-mentioned specified type of thin spinning filament yarn (LOY ' s), and this thin spinning filament yarn is suitable for further processing and is particularly suited for being drawn into thin staple fibre (fiber) and particularly microfiber.
By use according to of the present invention be used for by means of a device for spinning from polyester to produce thin, melt-spinning, low-oriented yarn be LOY ' s in case further be processed into the method for staple fibre can realize described purpose and do not offer some clarification on but can be easily from relevant fact discussed here inference or infer other purpose.
According to this fact, promptly in the method for the type that begins to mention:
(a) melt is offered this spinning pack, and 7500 to 14250 pores from this spinnerets extrude this melt with the form of melt filament,
(b) this melt soaks into the ring surface of this spinnerets upstream side, and wherein this ring surface comprises the outlet pore of this melt, and the density of pore is sprayed between 8 and 28 pores of silk area at every square centimeter,
(c) each sprays the hydraulic diameter of silk pore to select this between each pore 0.13mm and 0.24mm,
(d) carry the long filament of this cooling by the gap towards inner ring in the annular finish applying device; Described applying device is arranged on the downside 650 to 1200mm apart from this spinneret; Quantitatively apply the mixture of one finish/water to this endless tow by this gap; The diameter of this endless tow is shunk; Thereby contact to this long filament from this spray silk pore direct-connected line and the vertical line perpendicular to this applying device of circle of this applying device and become an angle between 1.5 ° and 9 °
(e) by at least one driven draw-off godet with the speed between 800m/min and 1550m/min extract out this endless tow that is coated with finish and
(f) one filament has a fiber number and between 1.5 and 4.0 DENIER and is at least 300% elongation at break.
Can in the spinning system of the refrigerating gas feed mechanism that the cooling device with a radial symmetric and guides from outside to inside, produce very favorable and very thin long filament (LOY ' s), each spinning part has a large amount of long filaments in the operation in the case, while can reduce with filament breakage and be bonded as the spinning fault of form, thereby can obtain uniform long filament by the spinning with good reliability.
The interaction according to special setting of the present invention, layout and operating parameter in the zone of spinning pack, applying device and refrigerating gas produces a kind of method in a mode that is not easy to predict for the first time, the method is characterized in that spinning has surprising high reliability and the product that formed by resulting fine filament simultaneously has good quality.
In addition, also exist some according to one of the present invention a series of other special advantages that method obtained.They are comprising in very favorable and economic mode, and throughput 100kg/ hour at least of the sufficient just every spinning part melt of production capacity is promptly arranged, and produce the thin LOY long filament of this hope.
Can keep stable by the travel path that long filament is moved as small as possible make this long filament according to refrigerating gas of the present invention system, and the uniform properties of this long filament is not reduced but raise.
At last, the method according to this invention can be produced the thin LOY long filament that is suitable for further processing and being particularly suited for being drawn into thin fiber and particularly microfiber.
In the scope of the method according to this invention, by the Spinning pumps that rotates with a constant speed melt or mixed polyester melt are compressed into spinning pack, and will extrude in its spray silk pore from the spinnerets of this spinning pack to form fuse.Use a known computing formula, rotary speed is set for pump extracted the melt of constant number and can obtain to have the long filament of wishing fiber number.
For example can make this melt by polymer chips in an extruder, making chip drying in the case in advance is useful especially to moisture≤50ppm.
The melt temperature that is commonly referred to spinning temperature and measures in the upstream of this Spinning pumps depends on the polymer of use or the fusing point of blend/mixed polymer.It preferably is in the given scope of formula 1:
Formula 1:T
m+ 15 ℃≤T
Sp≤ T
m+ 45 ℃
Wherein
T
m: the fusing point of polyester [℃]
T
Sp: spinning temperature [℃]
The purpose of predetermined parameter is that the hydrolysis of restriction viscosity descends and/or heat descends, and it should be suitably as far as possible little.Under situation of the present invention, target is that viscosity descends less than 0.12dl/g and preferably less than 0.08dl/g.
The uniformity of this melt directly influences the material behavior of this monofilament that is spun into.Therefore preferably use static mixer in this product manifold (product manifold), particularly preferably directly use the upstream of the branch in this manifold.
Follow heating to regulate the spinnerets temperature that depends on spinning temperature by so-called.For example one can be considered to follow heating system by the spinning bundle of " Diphyl " or extra convection current or pharoid heating.The spinnerets temperature is in same level with this spinning temperature usually approx.
According to US5250245, use the density of polymer or polymer blend, the diameter of spray silk pore and the fiber number of this single monofilament to calculate this spin-drawing i by formula 2
SpBe the merchant of draw speed and extruded velocity:
i
Sp=2.2510
5(δ π) D
2(cm)/dpf (DENIER)
Wherein
Density [the g/cm of δ=melt
3], for PTMT=1.12, PET=1.22g/cm
3
The diameter [cm] of D=spray silk pore
The fiber number of each monofilament of dpf=[DENIER]
Under situation of the present invention, this spin-drawing is chosen between 60 and 200, is being favourable between 80 and 135 particularly preferably also between 65 and 165 particularly.
The amount of each spinnerets processing polymer defines the economy of this spinning system or method in unit interval, because defined the quantity of the spinning part of every spinning production line/flow process by this quantity.The method according to this invention can be advantageously per hour carried out under the polymer throughput of 100kg polyester surpassing every spinnerets.As the function of the fibre number in from 0.5 to 1.2 DENIER scope (relevant with the fiber number of this finished fiber), 100 to 450kg/ hours the amount of feeding (throughput) of every spinnerets is a preferred value according to the present invention.In order to produce the microfiber that maximum fiber number is 1 (fiber number of finished fiber), especially preferred one is that every spinnerets 100 arrives 400kg/ hour throughput.Under the situation of the method according to this invention, can be with a plurality of spinning system in combination to form a spinning production line, can obtain in this case from every spinning production line every day 100 to the polymer production amount of being a bit larger tham 250 tons.
The spinning plate of success use has the melt outlet pore that is used to discharge the melt long filament with circle or annular array in the method for the invention, and the result is that this endless tow is an annular in the level cross-sectionn.
In this case, the outlet of the melt among the present invention pore advantageously is arranged to the form of a plurality of concentric rings (pore circle) in this spinnerets.16 to 30 pore circles that diameter is different preferably are set in this spinnerets, and even more preferably are 20 to 28 circles.
In this case, the pore circle of diameter maximum is outer ring and the pore circle of diameter minimum is an inner ring.
According to the present invention, described annular spinneret is complementary therewith.
The layout of this pore circle forms the interior zone of a no pore in endless tow, this is very important by this endless tow for making refrigerating gas best.In the case at the ratio between the diameter of selecting this outer ring and inner ring between 1.26 and 1.6 between 1.2 and 1.8 and preferably.
Preferably 300 and 600mm between and particularly preferably 350 and 450mm between select the diameter of spray silk pore outer ring.
For with this radial symmetric systematic collaboration effect, proved that the form that the zone of the spinnerets that is distributed with melt outlet pore on it has for annular region is gratifying.The size of this race diameter is the basis of calculating the shared space of this spinning part in the case.
The quantity of the pore in this spinnerets is between 7500 and 14250.The quantity of pore also is favourable between 8500 and 11000.Pore quantity also can obtain extraordinary effect between 10000 and 11000.Utilize the quantity of described pore, can realize high fine denier production capacity.Select the size in the zone of this spinnerets like this, promptly the quantity (capillary densities) of the spray silk pore of per unit area is between every square centimeter 8 and 28, preferably between 12 and 22 and particularly between 12 and 19.It is identical that the total amount that goes up pore at capillary orifice ring (pore circle) can be scattered in a) on each ring or circle the quantity of pore, or b) the pore quantity of each ring or circle is different.It is constant that spacing between pore is capable preferably keeps, and promptly the difference between the diameter of two adjacent pore circles is always identical in the case.
Preferably, on each circle the pore of equal number is arranged, and to select the arrangement mode of the pore of pore on capable be that each pore in the delegation is positioned between the pore of (its) adjacent two row.If four pores of two adjacent lines form hives a part (in Fig. 2, identifying) with W could be more favourable.
Except that circle, the cross section of this spray silk pore also can be any cross section that uses in melt spinning method usually, for example leafy shape (two leaf, trilobal, octofoil etc.) or annular (for hollow fibre).Select then this class pore size so that the aperture area of this pore be:
F=π D
2/ 4 D=hydraulic diameters wherein
When this cross section was circle, D was the diameter of this pore.
The hydraulic diameter of single spray silk pore is between 0.13 to 0.24mm and preferably between 0.15 to 0.22.It is favourable using diameter≤0.2mm (pore) for the situation of fiber number (spinning fiber number)≤3.6 DENIER of spinning filament yarn.Preferably also especially preferably between 2.0 and 4, selecting the length of this spray silk pore and the ratio of its diameter between 1.5 and 6.
Can avoid making and the cleaning problem by this selected pore diameter.Can also obtain this melt from the sufficiently high muzzle velocity of this pore.
In a preferred embodiment of the present invention, the long filament that is extruded can postpone the zone by a cooling when this spinnerets comes out.This zone is just in time below this spinning pack and show as a rebound area, thereby the long filament that protection sprays from this spray silk pore in this zone makes it can directly not expose to the open air and postponed their stretching/distortion or cool off in the cooling air.Refrigerating gas begins to discharge from this cooling system immediately behind this zone.The suitable length of this rebound area ground between＞0 to 60mm and preferably 20 and 50mm between.
This bounce-back (zone) preferably allows to avoid the reduction of the percentage elongation of this spinning filament yarn, and should avoid the fracture of this long filament that the too high cooling owing to this spinnerets causes under extreme case.
After the cooling system of one radial symmetric postpones the zone immediately following the cooling in this spinnerets and existence in case of necessity.In this cooling system inside, utilize and cool off this long filament from the outside towards the cooling gas flow of endless tow.
Those skilled in the art have been familiar with being used for the method for cooled filament from prior art.Confirmed extremely successful refrigerating gas and the especially cold air of being to use according to of the present invention.The temperature of this cooling air is preferably between 12 ℃ to 28 ℃ and especially preferably between 14 ℃ to 22 ℃.
Select the volume of refrigerating gas clearly according to the polymer throughput.So particularly for economically consideration.In the case, according to the present invention preferably, with respect to the volume of the throughput refrigerating gas of the melt by this spinning pack at every kg polymer 6 to 14Nm
3Between.Smaller volume can make this endless tow instability and cause the bonding of long filament.Bigger volume is disadvantageous at economic aspect.
The feature of the cooling system of this radial symmetric is to have one to be used for the columniform of refrigerating gas, porose exit surface.This cooling system, the exit surface of this refrigerating gas is around this endless tow in other words, thus cooling gas flow is towards the inside of this endless tow and there is from outside to inside an incident air flow.Can introduce the free space in this endless tow like this to each threads in will cooling off even air ground supply endless tow and with refrigerating gas.
Limit on length or the outlet length at one of long filament refrigerating gas is supplied with this endless tow equably.This cooled region arrangement according to the invention is included in a length and refrigerating gas is supplied with the long filament that comes out in the described delay zone the zone in 100 to 300mm scope, promptly on the outlet length of 100-300mm refrigerating gas is supplied with this long filament.The outlet length be 150 to 250mm then especially favourable.
Be surprisingly, the outlet length of this refrigerating gas, the annular shape of this endless tow that limits with distribution by the spray silk pore on this spinnerets matches, and can make this endless tow that slight expansion is arranged, and this stability for this endless tow institute travel path is favourable.
The cooling system of this radial symmetric is that a cylindrical shape is favourable, and according to definition, this cylinder has constant radius and this refrigerating gas and flows out and flow to this melt filament from the permeable inwall of cylinder on its whole length.
In this preferred embodiment, advantageously, the uniformity of long filament characteristic is controlled from the distance between the wall (inwall of this cylinder) of the melt filament of the outer ring of this spray silk pore and refrigerating gas outflow.Because the shape of this endless tow is conical on the moving direction of this long filament, so the distance between the wall of this long filament and refrigerating gas outflow can change.As a part of the present invention, provided the vertical line of the outer ring of pore-perpendicular to the line of spinnerets-and the wall that flows out of refrigerating gas between distance.
Distance between the cylindrical wall that the imaginary vertical line of the outer ring of the pore on this spinnerets and refrigerating gas flow out 10 and 30mm between and preferably 10 and 15mm between.This selected distance can avoid this long filament to bump against on the wall or blowing wall of refrigerating gas outflow, can make the refrigerating gas of q.s enter into the inside of this endless tow and provide enough refrigerating gases in the inside of this endless tow to long filament by the array that is formed by long filament simultaneously.In the case, owing to this refrigerating gas was extracted out before entering this endless tow, so the cooling loss minimum.Air can be blown over a large amount of long filaments successfully, effectively and equably.
Yet the cooling system of this radial symmetric can have the radius of a variation that is complementary with this taper endless tow, and therefore this cooling system can have slight taper rather than cylindrical.In this case, the radius of this cooling system is set to diminish on the direction that long filament moves.
Utilize at least one porose metal level can form this permeable wall that refrigerating gas flows out.For the muzzle velocity that makes this refrigerating gas on the length that an air flows out and on the diameter evenly, it is preferred using the buffer of form of the perforated plate of formation one extra play.According to the present invention, in a preferred embodiment, this refrigerating gas flows through a buffer element in the Tou Guoed wall that refrigerating gas flows out, the aperture area of transparent this member of refrigerating gas account for the refrigerating gas outflow wall 17% to 34%.
According to the present invention, below the zone that this refrigerating gas enters, insert the finish applying device of an annular, this endless tow is by this applying device.The diameter that is formed annular by applying device is less than the diameter of this endless tow, or in other words less than the diameter of the pore circle in this spinnerets.Narrow down a little and its diameter reduces in this taper endless tow of this applying device place like this.Yet it is fan-shaped that this endless tow still keeps.The diameter of applying device at the round wire place that contacts with endless tow is chosen as 0.95 to 0.55 times of inner ring diameter of this spray silk pore according to the present invention.
In an annular applying device, supply with the spinning oil of the mixture that comprises finish and water of desired number equably to this textile filament.To this endless tow apply preferably as 20% to 30% water of long filament percentage by weight and 0.2% to 1% finish.
In principle, this applying device comprises an annular upper portion and an annular lower portion that contacts this endless tow on a circle that is designed to not contact this long filament.These two parts are separated by a space, and the mixture of the finish/water that quantitatively adds from the outside flows out from this space and is supplied to this long filament.This geometry can be avoided the division of this endless tow.
Use the applying device of described type, when this endless tow is shunk, can avoid any dry friction taking place with this endless tow.Cross over the spinning filament yarn of carrying cooling in this applying device towards the space of this inner ring.Quantitatively be applied on this endless tow by the mixture of this space finish/water.Therefore the direction in this medium supply space is inside.The result is needn't force to discharge before this applying device along the inner entrained cooling air of this endless tow.
On the direction that this long filament moves, this applying device is arranged on the downstream on the surface of refrigerating gas outflow.Purpose to the distance of the qualification of spinnerets downside is to stablize this endless tow.Can determine the distance apart from this spinnerets downside suitable by the known method of those skilled in the art according to the present invention, with this long filament linear velocity of online/on-line measurement and/or long filament temperature, for example use laser Doppler airspeedometer of making by TSI (Germany) company or the IRRIS 160 type thermal cameras of making by Goratec (Germany).According to the present invention, the circle at long filament contact coating device place and the distance between this spinnerets downside are 650 to 1200mm.Confirmed that from 700 to 1000mm distance be specially suitable.
Contact to monofilament from the spray silk pore in the spinnerets this applying device circle direct-connected line and perpendicular to the angle between forming 1.5 ° and 9 ° the vertical line of this spinnerets.This angle is the angle of throat that is called for long filament hereinafter.In the preferred embodiment of this method, also especially preferably between 2 ° and 7 °, selecting an angle of throat between 1.5 ° and 8 °.
Because should enclose the radius difference of (ring), so can obtain a different angle of throat for each the pore circle (ring) in this spinnerets.The radius of this pore circle (ring) is big more, and then this angle of throat is just big more.The different angle of throat of pore circle (ring) is in 1.5 ° to 9 ° scope.
Thereby the angle of throat of stipulating this endless tow can make long filament abut on the applying device constantly and can apply finish equably, and allows guiding point of this long filament qualification is waved to prevent long filament.
Guide this endless tow to move long distance, surpass the position at this applying device place by the inner cooling air that allows to follow of this applying device in this endless tow inside.This has determined the state of the long filament in this endless tow and has made this in stable condition.
Below the position of supplying with the cooling air, guide this endless tow with and the cooling air the followed cylindrical spinning pipeline by a perpendicular.Below this annular applying device, the air that is positioned at this endless tow inside begins to flow out once more.By the part that one of this spinning pipeline has hole wall to deflate, another part of air is still followed this endless tow.This endless tow is supplied with this withdrawing device (withdrawal) and endless tow gathered into a branch of at one first long filament guide.Select this annular applying device to become the distance of beam filament guide like this to this, so that long filament is bearing on the applying device, promptly select this applying device to become deflection angle/angle of throat between the beam filament guide with this less than the ringlet of spray silk pore and the minimum of contraction angle between the applying device, promptly less than 1.5 ° and preferably less than 1 °.
To become level from the direction of the one-tenth beam filament of each spinning head by bar or cylinder, and make described one-tenth beam filament and from other spinning head becoming beam filament in conjunction with and form a multiply silk.Extracting this root multiply silk out by the draw-off godet unit with at least one driven draw-off godet also leaves it in bar tube in a capstan winch unit.
The circumferential speed of this first draw-off godet unit is called draw speed or speed.According to the present invention, by at least one driven draw-off godet with 800 and 1550m/min between speed extract the endless tow that this prepares out, thereby obtain thin LOY long filament.A particularly preferred velocity interval be 800 and 1450m/min between.
Preferably to extract one out from 800 to 1200m/min lower draw speed with the polymer of quickish speed crystallization PTT for example.Preferably extract PET out with the speed from 1000m/min to 1450m/min.Lower speed makes this spinning process comparatively uneconomical.Higher speed is no longer produced low orientation LOY ' s-elongation at break greater than 300% spinning filament yarn.
Can form multiply silk (yarn rope) by this spinning filament yarn by known devices, such multiply silk is placed in multiply silk that is processed into stretching in the bobbin cradle and in segment of fiber or the fiber that prescinds." Synthestische Fasern " book of on this point, can show with reference to F.Fourn é (1995) especially, Hanser Verlag ofMunich publishing.
With a draw ratio that depends on the elongation at break of spinning filament yarn this long filament that stretches.According to the present invention, after stretching, on segment of fiber, make this spinning filament yarn lax determine amount R, promptly on length, shrink.Obtaining at last is the fiber of fiber number in a definite scope of finishing dealing with.
According to the present invention, with a draw ratio (VV) that provides by following empirical equation stretch, HEAT SETTING/curings and curling this long filament
VV＝1+k(RD/100)
Wherein RD is the elongation at break with this spinning filament yarn of (%) expression, and selects k in 0.58 to 0.72 scope.
During curling and/or the long filament of this stretching is become dry (as an option) and make it lax, and this long filament is cut into the limited fiber of length by a ratio R.Finishing these backs resulting is that fiber number is by the given fiber of following formula.
Fibre number=spinning fiber number/(VVR)
Wherein between 0.7 and 1, select R.
According to the present invention, utilize this method can obtain spinning fiber number between 1.5 and 4 DENIER.Preferably obtain the spinning fiber number between 1.5 and 3.6 DENIER, and particularly preferably between 1.5 and 3.2 DENIER.
This spinning filament yarn has and is at least 300% elongation at break, is preferably 310% to 500%, and particularly preferably is 310% to 450%.The fracture strength of this spinning filament yarn 10 and 30cN/tex between.
The sufficiently high elongation at break of this LOY ' s can allow it to have the good tensility of high draw ratio.
This spinning filament yarn also has good fiber number uniformity, fracture load and elongation at break, in the case, wherein the coefficient of variation (CV represents with %) of described variable is limited to CV≤20% and preferably CV≤10% as the theoretical principle of described variable.
The fiber number of resulting this finished fiber or one filament between 0.5 and 1.2 DENIER, DENIER preferably≤1, and particularly preferably between 0.5 and 1 DENIER.
The elongation at break of fiber is at least 10%, is preferably 15% to 35% for PET, then is 30% to 65% for PTT/PBT.The fracture strength of fiber is at least 20cN/tex, preferably is at least 50cN/tex for PET, and is at least 25cN/tex for PTT, PBT.
Can use all polyester commonly used in the present invention, for example particularly PET, PTT and PBT.Polybutylene terephthalate (PBT) (PBT), polytrimethylene terephthalate (PTMT), polyethylene terephthalate (PET) are known for those skilled in the art.1 of terephthalic acids and equimolar amounts, the polycondensation of 4-butanediol can obtain polybutylene terephthalate (PBT) (PBT), 1 of terephthalic acids and equimolar amounts, the ammediol polycondensation can obtain polytrimethylene terephthalate, and the ethylene glycol polycondensation of terephthalic acids and equimolar amounts can obtain polyethylene terephthalate.The mixture of these described polyester also is possible.
Polyester can be a homopolymers, also can be copolymer.Particularly can consider those copolymers, promptly except PET, the PTMT and/or PBT unit that repeat, also comprise-represent-can reach the normal comonomer of 15 moles of % with the percentage of all repetitives in this polyester, for example 1,2-ethylidene glycol/glycol, diethylene glycol (DEG), triethylene glycol, 1,4 cyclohexane dimethanol, polyethylene glycol, isophthalic acid and/or adipic acid.Yet, polyester homopolymer preferably within the scope of the present invention.
But among the present invention available polyester preferably heat ductile forming and can be spun into monofilament or long filament.The polyester that has the ultimate viscosity number in the scope from 0.5dl/g to 1.2dl/g in this case is especially favourable.Especially preferred polyester is that limiting viscosity is the PET of 0.5-0.7dl/g, and limiting viscosity is that PTT and the limiting viscosity of 0.6-1.2dl/g is the PBT of 0.6-1.2dl/g.
One polymer melt for example can directly obtain from the polycondensation reactor of a polycondensation system.This polymer melt can be drawn in the manifold system with pump by a drawing pump then, then this melt be supplied to the spinning part that at least one comprises at least one Spinning pumps and a spinning pack.Selectable, can in an extruder, melt dry polymer chips, and then used as melt.
Can comprise other additive of using quantity always as additive according to polyester of the present invention, for example catalyst, stabilizing agent, antistatic additive, antioxidant, flame retardant, dyestuff, dyestuff absorb modifier, light stabilizer, organic phosphite, fluorescent whitening agent and delusterant.As the percentage of the gross weight of this monofilament, comprise in this polyester to calculate by weight and be preferably 0 to 5% and particularly preferably be 0 to 1.4% additive.
As the percentage of monofilament gross weight, this polyester also comprises the sub-fraction linked, and it is calculated by weight and preferably can reach 0.5% and especially preferably can reach 0.25%.According to the present invention preferred linked comprising polyacid for example trimellitic acid, all (1,2,4,5-) benzenetetracarboxylic acid or trivalent are to the alcohol of sexavalence for example trimethylolpropane, pentaerythrite, dipentaerythrite, glycerol or contain oxygen/hydroxy acid accordingly.
Within the scope of the invention, 0.05% to 2.5% the interpolation polymer of calculating by weight as the percentage of the gross weight of monofilament is mixed with this polyester mutually as a preparation that increases elongation.Particularly suitable interpolation polymer is comprising the polymer and/or the copolymer that illustrate in disclosed text WO 99/07927 and DE 10022889 A1 according to the present invention.
Preferably form is interpolation polymer and/or the copolymer that granularity is in the bead polymer form in the particularly advantageous scope within the scope of the present invention.By interpolation polymer and/or the copolymer that for example uses with this long filament mixed with polymers, be suitably the particle form that has from 0.1 to 1.0mm average diameter according to the present invention.Yet also can use bigger or less pearl or grain.This interpolation polymer and/or copolymer also can be included in the matrix polymer section, thereby need not weight feed.
Be that unbodied and insoluble interpolation polymer and/or copolymer also are preferred in this polyester matrix.They preferably have 90 to 200 ℃ glass transition temperature, can determine in a known manner preferably to pass through differential scanning calorimetry by this glass transition temperature.Can obtain further details from prior art, for example the example among Yin Shua the publication WO99/07927 is combined in the disclosure herein as a reference at this.
Preferably select like this to add polymer and/or copolymer, promptly the ratio with this interpolation polymer and/or copolymer and the melt viscosity of this matrix polymer is 0.8: 1 to 10: 1, and preferably 1.5: 1 to 8: 1.In this case, add at the frequency of oscillation of 2.4GHz and fusing point that equals this matrix polymer under 34 ℃ the temperature by the vibration flow graph and measure melt viscosity.For PET, the measurement temperature of melt viscosity is 290 ℃, and further details equally also can find in the publication WO 99/07927 of printing.The melt viscosity that adds polymer and/or copolymer preferably is higher than the melt viscosity of matrix polymer, has been found to be this interpolation polymer and/or copolymer and has selected a specific range of viscosities and select this viscosity ratio can help to optimize the characteristic of the long filament of being produced.Utilize the viscosity ratio an of the best can make the quantity minimum of the interpolation polymer and/or the copolymer of adding, this has also improved the economy of this method in addition.The polymeric blends that is spinned preferably include calculate by weight 0.05% to 2.5%, and particularly preferably comprise 0.25% to 1% interpolation polymer and/or the copolymer of calculating by weight.
By selecting granularity that favourable viscosity ratio can realize this interpolation polymer and/or copolymer narrow distribution in this matrix polymer, realize the fibrillar structure of this interpolation polymer and/or the hope of copolymer in this long filament simultaneously.The glass transition temperature of the glass transition temperature that is higher than this matrix polymer of this interpolation polymer and/or copolymer guarantees that this fibrillar structure solidifies fast in this spinning filament yarn.One leaves this spinning head, and the maximum particle size of this interpolation polymer and/or copolymer is about 1000nm in the case, but particle mean size is 400nm or littler.After long filament is carried out spin-drawing, can obtain useful fibrillar structure, wherein this long filament comprises and calculates by weight at least 60% length in the scope of from 0.5 to 20 μ m and the interpolation polymer and/or the copolymer of the fibrillation form of diameter in the scope of from 0.01 to 0.5 μ m.
Wherein, in a kind of known mode, this spinning additive can molten state or solid-state quantitative adding matrix polymer, distributes equably therein and is dispersed into granule.Can advantageously use a kind of device that in DE 1002289, describes in detail.
Description of drawings
With reference to following accompanying drawing a preferred embodiment of the present invention is described.
Fig. 1 illustrates a kind of schematic representation of apparatus that is used to carry out the method according to this invention.
Fig. 1 a is the partial enlarged drawing of Fig. 1.
Fig. 2 is illustrated in the preferred setting of spray silk pore in the annular spinneret.
The specific embodiment
Fig. 1 illustrates a kind of schematic representation of apparatus that is used to carry out the method according to this invention.The one insulation spinning manifold 1 that is heated by heat-carrying steam (Diphyl) comprises a Spinning pumps (not shown) and a spinning pack 2.This cylindrical spinning pack 2 comprises that one comprises the annular spinneret 3 of spray silk pore.The cooling pipe 4 of radial symmetric has a refrigerating gas feed mechanism B.In the cooling pipe 4 of the closure of bicylindrical form, this refrigerating gas around the inner space, and is incorporated into the space that long filament occupies with this refrigerating gas at the top by a permeable inwall with annular spread from outside to inside.The entering part of representing refrigerating gas 5 with arrow.Followed by cooling pipe be this spinning pipeline 7, this spin duct road has the cylindrical tube of a sealing and is positioned at the form that this cylindrical tube end is used for extracting equably the permeable column part 8 of refrigerating gas.The position 10 of the position the earliest of going into jet in this cooling pipe that has refrigerating gas.Annular finish applying device is arranged in the below of the exit region 5 of this cooling pipe or spinning pipeline gas.Come out in the ring spinning hole of melt filament 9 from this spinnerets and leave refrigerating gas zone, applying device 6 and spinning pipeline towards the direction of the thread-carrier (not shown) of this convergence with the filament form that is coated with finish.
Fig. 1 a illustrates the amplification details of Fig. 1.Wherein long filament is shown spray silk pore in the spinnerets and the direct-connected line between this finish applying device.This line with constitute angle of throat α 1 and α 2 perpendicular to the vertical line L of this spinnerets.This angle [alpha] is with respect to the angle of throat that becomes the beam filament guide below this applying device.Distance between this spinnerets and this finish applying device is depicted as apart from S.A represents to rebound and K is the distance between cooling pipe wall and the pore outer ring.
Be shown D
iAnd D
aDiameter be respectively the diameter of this pore inner ring and outer ring.D is the diameter of the permeable wall of this cooling pipe.
Fig. 2 is illustrated in the preferred arrangements form of this spray silk pore 11 in this annular spinneret 3.As example some pores on this pore circle only are shown.The diameter of this spray silk pore outer ring is D
aAnd the diameter of inner ring is D
iW represents that a stagger arrangement (cellular) of this pore 11 is provided with.
The working method of this setting shown in above-mentioned Fig. 1 and 2 will be described below.
At first polyester fondant is supplied to this spinning manifold 1, and, this polyester fondant is supplied with this spinning pack with annular spinneret 32 by a gear pump with constant polymer throughput by a heated products manifold (not shown).
When the spinning filament yarn that is coated with finish comes out from this spinning pipeline, they in a thread guide, form a branch of, by a traditional draw-off godet-and-capstan winch extraction system extracts (not shown) out and leaves in the bar tube.
Describe the present invention in detail with reference to embodiment below, these designed embodiment can not limit thought of the present invention by any way.
For those skilled in the art, the method for determining the material characteristics of defined is known.These methods can find in technical literature.Even can determine most parameters, but determine below under situation of the present invention, having proved that the method for the feature of long filament or fiber is useful especially with different modes.
In the capillary orifice viscometer that Ubbelohde company makes, measuring intrinsic viscosity under 25 ℃ and calculating with a known formula.The solvent that uses is that weight rate is 3: 2 a phenol and 1, the mixture of 2-dichloro (generation) benzene.The concentration of solution is in every 100ml solution the 0.5g polymer to be arranged.
The DSC calorimeter that uses Mettler company to make is determined fusing point, crystallization temperature and glass transition temperature.In the case, at first sample is heated to 310 ℃ and fusing, quenching then (sample).In 20 ℃ to 310 ℃ scope, carrying out dsc measurement under the firing rate of 10K/min.Determine this temperature parameter by processor.
Under following condition, make one group of device-Vibroskop and Vibroyn-determine fiber number, fracture strength and elongation at break by Austrian Lenzing company.Condition is: for LOY and fiber, free clamping length is respectively 10 and 20mm, and measuring speed is respectively 100 or 200mm/min, and preloading is 0.6cN/dtex.The value of fracture load can obtain fracture strength divided by fiber number, can estimate elongation at break under peak load.
The each setting carried out 50 independent measurements and calculating mean value and coefficient of variation (CV) from these are measured.
Example 1 to 12
Under 298 ℃ temperature, making intrinsic viscosity in the 10E 10 type extruders of being made by Barmag company is 0.64dl/g, fusing point T=256 ℃ and moisture are polyethylene terephthalate (PET) fusing of 22ppm, and are introduced into a product manifold under uniform temp.Temperature at spinning manifold is 298 ℃.Three SMXL type blenders that Switzerland Sulzer company makes have been installed in this manifold.
Melt is supplied with the BN 100plus type spinning system that the German Zimmer company of type shown in a Fig. 1 makes, and this system comprises that a gear pump (revolution 150ccm) and has the cylindrical spinning pack of an annular spinneret.With temperature is that 18 ℃ and relative humidity are the melt filament that 80% cooling air cooling is come out from the annular pore of this spinnerets, the wall that wherein air flows out is made by an abacus, and the metal screen that 22% opening and for the form in the hole of the interval 4mm of diameter 2mm of this abacus area has the 150my hole occupies.The position the earliest that this air flow flows into is apart from this spinnerets 40mm.The wall 12mm that the vertical line of this pore outer ring flows out apart from gas.It is 200mm that the air of described wall flows through length.
As mentioned this spray silk pore circle of definition with respect to the angle of throat of this applying device between 2 and 5.8 °.By the annular gap in this applying device one water/finish mixture is applied to long filament.This applying device is 200mm apart from this spinnerets 850mm and its diameter, is the diameter D of this pore circle
i0.77 times.
Other geometric data item is implemented as follows.D
a/ D
iBe 1.43; D
aBe 373mm; The anchor ring of this spinnerets is long-pending to be 600cm
2, it means according to the quantity of pore determines that capillary densities is at 12.5 and 17.5 every cm
2Between.
Extract the volume that depends on the cooling air of importing volume out in distance from this spinnerets 3700mm.The long filament that is coated with finish that comes out from the spin duct road is being in the poly-bunchy of quilt the thread guide from the about 4450mm of this applying device, and is drawn out of and is deposited in the bar tube by a traditional draw-off godet and a capstan system.
The parameter that visible this spinning filament yarn changes in the table 1 with and formed fiber number.Because the relexation of spinning filament yarn in the bar tube is so the ratio of fiber number that records and theoretical fiber number is 0.8: 1.
Listed the characteristic of spinning filament yarn in the table 2.Change the draw speed in the example 1 and 2, can change elongation at break.The less different spinnerets of diameter with spray silk pore in example 10 repeats example 5.Under all identical situation of others, this can improve the CV value.
Stretching with reference to a special example explanation spinning filament yarn.
A plurality of tubes that comprise spinning filament yarn in collection and the loading example 7 are to flow to segment of fiber.This stretching divides two stages to carry out, and promptly given total extensibility is 3.29, when temperature is 70 ℃ ratio be 2.9 and when temperature is 80 ℃ ratio be 1.134.Carry out HEAT SETTING at 180 ℃.This multiply silk cooling then makes it by one 100 ℃ steaming chamber and be curled in a crimper.In a net belt type dryer that moves continuously, dry these multiply silks at 70 ℃.This makes this multiply silk lax with the ratio of R=0.93.At last this multiply silk is cut into the fiber that Cutting Length is 38mm, the characteristic that records this fiber is as follows:
Fiber number=0.89 DENIER, CV=8.8%,
Fracture strength=55.8cN/tex, the CV=5.6% of fracture load,
Elongation at break=18.8%, CV=14.7%
By suitably selectivity constant k and relaxation ratio R, the elongation at break according to spinning filament yarn in example 1-12 is selected draw ratio in this wise, can obtain final fiber number＜1.2 DENIER that this fiber is wished, and DENIER preferably＜1.Table 3 illustrates the parameter of the drawing of fiber among the example 1-12.
Example 13
In as the spinning system among the example 1-12 of front, this cooling that is located immediately at the spinnerets below postpones regional length and increases to 50mm.In this extruder, fusing (inherent viscosity) IV is 0.93dl/g, fusing point T under 255 ℃ temperature
mBe that 227 ℃ and moisture are the PTT section of 20ppm, and extract this melt out with pump and make it by the product manifold under the same temperature.The temperature of spinning manifold is made as 256 ℃.Draw speed is made as 900m/min.Table 1 provides spinning fiber number and other corresponding spinning and extensograph parameter of being produced in 3.This spinning process is stable, and the quality coefficient of the fine filament of producing like this is fine.
Comparative examples 14 and 15
According to WO 01/88233A1, repeat the example 3 in this specification and carry out following change.Applying device at distance spinnerets 500mm place with Fig. 3 form of this WO inserts endless tow, thereby this long filament group is at an outer ring contact coating device.The diameter of applying device is chosen as the diameter D of pore circle
a1.05 times.Correspond respectively to than air consumption 4.25 and 8.5, volume of air is made as 1100Nm in example 14
3/ h and in example 15, be made as 2200Nm
3/ h.
In example 14, it is coalescent that spinning filament yarn often takes place, and this constitutes a main mass defect.In example 15, visible long filament waves above applying device, this means to guarantee evenly to apply finish.The number of C V value of this spinning filament yarn goes beyond the limit 20%.
Comparative examples 16
In another test of the setting of usage example 15, this spinning draw speed is increased to 1800m/min.The CV value of this spinning filament yarn is between 10 to 20%, and elongation at break is 244%.Draw ratio must be reduced to 2.76 from 3.76.
Comparative examples 17 and 18
Repeat the parameter setting of example 3, but difference is to use the annular applying device of used form in the example 3, and its internal diameter is D
i0.385 times.Example 17 uses the volume of air identical with example 3 to move, and the ratio air consumption of polymer is set at 19Nm in example 18
3/ kg.Maximum long filament angle of throat with respect to applying device is 9.1 °.
The spinning filament yarn bonding takes place in the example 17, and this constitutes a main mass defect.Do not find the spinning filament yarn bonding in the example 18.Yet the CV value of this spinning filament yarn characteristic goes beyond the limit 20%.
Claims (13)
- One kind be used for by means of a device for spinning from polyester produce thin, melt-spinning, low-oriented yarn be LOY ' s so that further be processed into the method for staple fibre, this device comprises:At least one has the spinning pack (2) of a spinnerets (3), this spinnerets have the annular of being arranged to pore so that melt filament from wherein coming out,The cooling system of one radial symmetric (4,5), in this cooling system inside by being that from outside to inside refrigerating gas cools off described long filament with respect to endless tow,One is used for applying the applying device (6) of finish on filament tow (9),It is characterized in that,(a) melt is offered this spinning pack (2), and 7500 to 14250 pores from this spinnerets extrude this melt with the form of melt filament (9),(b) this melt soaks into the ring surface of this spinnerets upstream side, and wherein this ring surface comprises the outlet pore of this melt, and the density of pore is sprayed between 8 and 28 pores of silk area at every square centimeter,(c) each sprays the hydraulic diameter of silk pore to select this between each pore 0.13mm and 0.24mm,(d) by annular finish applying device, (6) long filament of this cooling is carried in the gap towards inner ring in, described applying device is arranged on the downside 650 to 1200mm apart from this spinnerets, quantitatively apply the mixture of one finish/water to this endless tow by this gap, the diameter of this endless tow is shunk, thereby contact to this long filament from this spray silk pore direct-connected line and the vertical line of circle of this applying device and become an angle between 1.5 ° and 9 ° perpendicular to this applying device(e) by at least one driven draw-off godet with the speed between 800m/min and 1550m/min extract out this endless tow that is coated with finish and(f) one filament has a fiber number and between 1.5 and 4.0 DENIER and is at least 300% elongation at break.
- 2. according to the method for claim 1, it is characterized in that described refrigerating gas begins to the 60mm place to come out in downside＞0 apart from this spinnerets from the cylindrical cooling system of a radial symmetric.
- 3. according to the method for claim 1 or 2, it is characterized in that, on the outlet length of a 100-300mm, this refrigerating gas is flowed to this endless tow.
- 4. require 1 or 2 method according to aforesaid right, it is characterized in that, be chosen as with respect to the volume of the refrigerating gas of the throughput of the melt by this spinning pack and be in every kg polymer 6Nm 3And 14Nm 3Between.
- 5. require 1 or 2 method according to aforesaid right, it is characterized in that, give this spinnerets with this melt Conveying with 100kg/ hour to 450kg/ hour amount.
- 6. require 1 or 2 method according to aforesaid right, it is characterized in that, give this spinnerets with this melt Conveying with 100kg/ hour to 400kg/ hour amount.
- 7. require 1 or 2 method according to aforesaid right, it is characterized in that, cylindrical wall 10 to 30mm is flowed out perpendicular to the vertical line of this spinnerets apart from refrigerating gas in the place, pore outer ring in this spinnerets.
- 8. require 1 or 2 method according to aforesaid right, it is characterized in that, in the permeable wall that refrigerating gas flows out, this refrigerating gas is by a damping element, the permeable aperture area of this damping element equal the wall that this refrigerating gas flows through the gross area 17% to 34%.
- 9. require 1 or 2 method according to aforesaid right, it is characterized in that, with a draw ratio VV to this long filamentVV＝1+k(RD/100)Stretch, HEAT SETTING, curl, alternatively dry, with lax this long filament of a ratio R and this long filament is cut into the fiber of limited length, thereby from this spinning filament yarn, can obtain the fiber of fiber number between 0.5 and 1.2 DENIER according to following formulaFibre number=spinning fiber number/(VVR)Wherein RD is the elongation at break of this spinning filament yarn of representing with percentage, is selecting R between 0.7 and 1 and select k in 0.58 to 0.72 scope.
- 10. require 1 or 2 method according to aforesaid right, it is characterized in that, described spray silk pore is arranged to the form of 16 to 30 pore circles on described annular spinneret.
- 11. require 1 or 2 method according to aforesaid right, it is characterized in that the fiber number of this spinning filament yarn is between 1.5 and 3.6 DENIER.
- 12. require 1 or 2 method according to aforesaid right, it is characterized in that the fiber number of this fiber is between 0.5 and 1 DENIER.
- 13. require 1 method according to aforesaid right, it is characterized in that the elongation at break of this one filament is 310% to 500%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2003138821 DE10338821B4 (en) | 2003-08-21 | 2003-08-21 | Process for producing fine fibers |
| DE10338821.4 | 2003-08-21 |
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| Publication Number | Publication Date |
|---|---|
| CN1584136A CN1584136A (en) | 2005-02-23 |
| CN1584136B true CN1584136B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410057006 Active CN1584136B (en) | 2003-08-21 | 2004-08-20 | Production method of thin fibers |
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|---|---|
| CN (1) | CN1584136B (en) |
| DE (1) | DE10338821B4 (en) |
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| CN103866405B (en) * | 2012-12-18 | 2017-04-05 | 中国纺织科学研究院 | A kind of high density holes profiled filaments and preparation method thereof |
| CN113755956B (en) * | 2021-08-31 | 2023-06-13 | 界首市三宝宏达制线有限公司 | Polypropylene fiber short yarn spinning equipment and spinning method |
| CN115387026A (en) * | 2022-09-13 | 2022-11-25 | 青岛国恩熔喷产业有限公司 | Low-resistance high-filtering melt-blown fabric production system and production process thereof |
| CN116397342B (en) * | 2023-03-04 | 2024-01-19 | 浙江恒优化纤有限公司 | Polyester fiber spinning equipment and process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681522A (en) * | 1984-08-22 | 1987-07-21 | Barmag Ag | Melt spinning apparatus |
| US4712988A (en) * | 1987-02-27 | 1987-12-15 | E. I. Du Pont De Nemours And Company | Apparatus for quenching melt sprun filaments |
| US5536157A (en) * | 1991-03-04 | 1996-07-16 | Ems-Inventa Ag.G. | Apparatus for cooling melt-spun filaments |
| CN1195039A (en) * | 1996-12-20 | 1998-10-07 | 埃姆斯-英维塔公司 | Process for production of polyester multifilament yarn |
| CN1370249A (en) * | 1999-08-10 | 2002-09-18 | 齐默尔股份公司 | Polyester-staple fibers and method for prodn. thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5593816A (en) * | 1979-01-10 | 1980-07-16 | Unitika Ltd | Production of extremely fine polyester fiber |
| CH673659A5 (en) * | 1987-03-05 | 1990-03-30 | Inventa Ag | |
| US6881047B2 (en) * | 2000-05-18 | 2005-04-19 | Invista North America S.A.R.L. | Process and apparatus for improved conditioning of melt-spun material |
| JP2002309431A (en) * | 2000-06-21 | 2002-10-23 | Toray Eng Co Ltd | Spinning apparatus |
-
2003
- 2003-08-21 DE DE2003138821 patent/DE10338821B4/en not_active Expired - Lifetime
-
2004
- 2004-08-20 CN CN 200410057006 patent/CN1584136B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681522A (en) * | 1984-08-22 | 1987-07-21 | Barmag Ag | Melt spinning apparatus |
| US4712988A (en) * | 1987-02-27 | 1987-12-15 | E. I. Du Pont De Nemours And Company | Apparatus for quenching melt sprun filaments |
| US5536157A (en) * | 1991-03-04 | 1996-07-16 | Ems-Inventa Ag.G. | Apparatus for cooling melt-spun filaments |
| CN1195039A (en) * | 1996-12-20 | 1998-10-07 | 埃姆斯-英维塔公司 | Process for production of polyester multifilament yarn |
| CN1370249A (en) * | 1999-08-10 | 2002-09-18 | 齐默尔股份公司 | Polyester-staple fibers and method for prodn. thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10338821B4 (en) | 2014-09-25 |
| DE10338821A1 (en) | 2005-05-12 |
| CN1584136A (en) | 2005-02-23 |
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