CN1119461A - Melt spinning method for filament - Google Patents
Melt spinning method for filament Download PDFInfo
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- CN1119461A CN1119461A CN94191488A CN94191488A CN1119461A CN 1119461 A CN1119461 A CN 1119461A CN 94191488 A CN94191488 A CN 94191488A CN 94191488 A CN94191488 A CN 94191488A CN 1119461 A CN1119461 A CN 1119461A
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- silk
- air flow
- speed
- air
- long filament
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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
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
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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
- D01D5/098—Melt spinning methods with simultaneous stretching
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
Filament stress in a newly spun filament is reduced by avoiding or limiting air friction between the filament and the contiguous layer of air. This is done by producing an air stream that flows in the direction of travel of the thread at a speed which is the same or approximately the same as the surface speed of the filament. The air stream can be directed to the filament surface by means of a tube.
Description
The present invention relates to be used for a kind of method by polyester, polyamide (condensation polymer) or polypropylene production (spinning) long filament.Also proposed to be applicable to the device of this method simultaneously.
Because efficient, raising melt form the output speed of long filament from the spinneret orifice extrusion be the target of seeking always.The size of this " output speed " is not an absolute value that can be applied in each spinning process, but will decide according to the silk that will spin.A basic difference is arranged, for example use between the silk with silk and weaving in industry, weaving can be spun into now with silk and be POY (pre-oriented yarn) or FDY (fullly drawn yarn (FDY)).
Seek the restriction that higher output speed is subjected to some output speed effects of having known at present, these effects mainly are that the metamorphosis of polymer produces when forming long filament.These change, and make silk no longer can satisfy its predetermined requirement thereby for example make the intensity of silk and stretch to reduce.This is also indirect is suitable for making process lose the situation of controllability under higher speed, consequently causes some uncontrollable variations (and causing the inhomogeneous of a performance thus) and/or is fracture of wire (operating problem).Purpose of the present invention
The objective of the invention is to accomplish to improve output speed and keep the silk performance constant and/or be speed remain unchanged and make the silk performance be improved.Prior art
So far have at least 20 years people to recognize, silk under higher output speed, silk with accompany or contacted air layer between frictional force can influence obtainable thread performance (US-4,049,763).Meanwhile, once proposed to stop these frictional force to add the performance stipulated man-hour (US-4,185,062 and US-4,202,855) at a slow speed to be returned to the air flow that accompanies that produces " assisting ".The solution that is proposed-one air flow that accompanies-once proposing (US-2,252,684) for other reason a long time ago.Term " the auxiliary air flow that accompanies " is meant the effect of the isolated plant that produces the air flow that accompanies here, and it is to be distinguishing with work as the air flow that accompanies that air-flow caused that takes up when silk passes through air.Above-mentioned proposal all is to produce auxiliary air flow for the curing according to silk.
Meanwhile, propose before silk solidifies, to make silk to be subjected to a tension force (US-3,706,826).This tension force can be produced by air flow.Afterwards at US-4,496,505 (=EP-56963) occurred one once more in the patent to propose that similarly wherein air flow is to be produced by an air exhauster, and be silk by with the thermal treatment zone that spinneret orifice links to each other after.On the contrary, do not have the thermal treatment zone in the WO90/02222 patent, air exhauster wherein is to be connected on the spinneret orifice by one " spinning chamber ".
Once some proposal relevant or that revise puts forward afterwards: for example, silk after spinneret orifice through ventilator (US-4,702,871 that establish predetermined pressure; 4,863,662 and US-4,973,236).There is special sealing device to keep pressure in the ventilator.This problem is at US-5,034,182 and US-5,141,700 (=to have been avoided in EP-244217), it is that air (after it is used for setting up predetermined pressure) is discharged from ventilator under speedup.
These proposals are afterwards said unclearly to this purpose.They clearly are that attempt is to the good effect of this or the sort of generation.It is more that above-mentioned patent documentation does not show that phenomenon that whether phenomenon that proposed is determined than experience relates to.In some example, specification is pointed out silk selectively to be applied tension force being close to the spinneret orifice place.
For the reason of integrality, mentioned the device that in nonwoven product processing, is used to export silk (for example US-3,707,593).These install, and it doesn't matter with present invention, and its reason shows in EP 244217 patents, no longer repeats at this.Basic design
The present invention is to be waited part knowledge illustrated in the article " the 6.6 quick spinning of polyamides fat " that periodical " chemical fibre/textile industry " (Chemiefasern/Textilindustrie) is write on the 662nd page of September in 1992 as the basis by doctor H.Breuer.According to this knowledge, illustrated that the quick polycondensation spinning characteristic relevant with form with textile production process is little with the spinning condition relation, and only had spinning speed to play tangible influence.
The present invention be in fact silk is applied load (long filament stress) until yarn to become be on the point of solid, influence spinning speed as further knowledge basis.The present invention adopts this stress is carried out selectively influencing the performance that method reaches silk.The present invention
A first aspect of the present invention has proposed the method for a melt spinning, traffic direction at silk has an air flow to be created in the surface of silk, it is characterized in that air flow flows through a part on the still uncured filament length degree of polymer material at least, and with the yarn feeding direction flow through that its speed of air flow of this part filament length degree should not make silk because thread and the air layer of adjacency between friction be subjected to stress, or be subjected to omitting the stress of disregarding.
Silk is preferably delivered on the bobbin (package) of a coiler device with predetermined speed.Winding speed can be like this, if under the help of the air flow that does not have a feeding direction, the speed of silk is to be decided by the stress whether a predetermined point in the spinning threadling can make silk be added because of the friction between the air layer of silk and adjacency, and this stress can have influence on the performance of silk.According to the present invention, produce an air flow from said point, air flow is that the performance that the frictional force between the air layer of yarn and adjacency is remained on silk has under the limiting value of significant impact in the speed on the silk traffic direction.
The air flow that accompanies with silk preferably no longer has on the point in the sex at all spinning threadling the performance of silk at least to said frictional force, just to approaching on the point that polymer material has cured.When arriving this, the speed of air flow is to remain on this speed that does not produce the frictional force that does not require.
The air flow that produces preferably makes it even as much as possible flowing of silk feeding direction, and just its turbulent flow is very little and cross force that act on the silk is very little.
A second aspect of the present invention has proposed the method for a melt spinning, the silk that obtains according to this method is on the bobbin with predetermined speed feeding wrapper to a coiler device, winding speed is to set like this, unless the help of air flow is arranged at the silk traffic direction, otherwise the silk of operation will produce " constriction ", it is characterized in that the help of air flow being arranged thereby prevented the generation constriction on the traffic direction of silk.
A first aspect of the present invention and second aspect can favourable combining, and the special benefits that obtains is that the stress of silk when solidifying has obtained minimizing aspect two, and the power on the silk of promptly acting on has reduced and prevented the taperization (constriction) of silk before solidifying.
Describe embodiments of the invention for example in detail by means of accompanying drawing now.Wherein:
The schematic diagram of the working line (spinning threadling) of silk between spinnerets and the winding head (bobbin winder) in the modern common spinning process of Fig. 1;
Fig. 2 is according to the corresponding schematic diagram of new method of the present invention;
Fig. 3 is used to implement the schematic representation of apparatus according to this method of Fig. 2;
The corresponding schematic diagram of a servicing unit when Fig. 4 is used to spin very thin long filament;
A schematic diagram of Fig. 5 this method expansion aspect;
The schematic diagram of a preferential variation aspect of Fig. 6 this method expansion.
The present invention at first describes with reference to the spinning threadling of highly having simplified, so just can not make because of inessential explanation describe complicated.For this reason, selected for use POY (pre-oriented yarn) process as an example.The present invention is not subject to this example, and can be applied in other process, for example adopts known draw-off godet.Concise and to the point once more describes with reference to accompanying drawing.
Fig. 1 has represented the part of spinnerets 10 and a spinneret orifice 12 in this spinnerets 10 schematically.Being extruded by the device do not expressed by this spinneret orifice melt 14 becomes long filament 16.Only express a long line 16 for simplicity, yet known that it can form a lot of long filament 16 (every threads is by a spinneret orifice in the spinnerets 10) simultaneously.Method illustrated in fig. 1 is finished around the bobbin 18 to a coiler device (winding head or bobbin winder) 20 by long filament 16.
Be initially liquid polymer and obtain cooling between spinnerets 10 and winding head 20, this cooling is to go to realize owing to hot polymer passes to heat in the ambient gas (air).The transmission of heat will proceed to polymer at least always and obtain till the typing (curings), and this curing is to occur on thread confirmable point in service (or, at least in a confirmable scope).Point out among Fig. 1 that solidification point is at position EP place, this position mainly is the influence (journal of writings-chemical fibre/textile industry of being mentioned above seeing, in September, 1992) that is subjected to spinning condition.
On solidification point EP (promptly between this point and spinnerets 10), the long filament taperization, 12 initial cross-sections that extrude point diminish gradually from the hole with respect to it in its cross section.The cross section of long filament just no longer includes the further variation of (great) after solidification point EP.The speed of " polymer beads " between spinnerets and winding head thereby be subjected to very complicated influence, making some difference does not also find out.Along with the typing of polymer, this speed (spinning speed) is determined by winding head 20 fully.This speed lasts till winding head 20 from solidification point EP then always.
In present conventional method, can produce a relative motion between the air layer of long filament and its adjacency, long filament determined by several factors for the relative velocity of air layer, for example-whether the operation of silk adopted any way and indoor air isolated.-whether there is the air that special method makes and silk is contiguous to move, if moved, it is with what direction motion.
The common result of friction between the air layer of long filament and adjacency is an air along the direction of silk operation with silk " servo-actuated ", and therefore the power that is acted on silk cross section, any point place in working line is: power Fs-gravity FR of the power Fr of Fb-acceleration-produced with windage-must be by the winding head effect obtains correlation with joint efforts thus
FR=Fb+Fr-Fs wherein, first approximation and omit gravity.
These variablees are not represented whole explanations of spinning process.In order to concentrate in the essence design of the present invention, there are many variablees not take in.This method is illustrated more accurately and can (for example) consult following article: " Model of Steady-StateSpinning at Intermediate take-up speeds " (with the model of medium coiling speed spinning under stable state) Henry H.Geoge work, publication is at periodical " PolymerEngineering and Science ", April 22 nineteen eighty-two volume, the 5th phase is on the 292nd page.
The stress that on said silk cross section, produces thereby provide as follows:
Wherein Q is the area of section size of said silk section.Stress, make a concerted effort FR and area size Q three are the distance functions that leaves spinnerets 10.
Instantaneous point after long filament occurs from spinneret orifice, because the velocity ratio of long filament is lower in this zone, long filament almost is not subjected to windage and the stress that produces.In this zone, stress is relevant with acceleration and vertical viscosity.Yet when acceleration is brought up to yarn speed and reached a certain limit,, stop or limit this additional stress unless take some measures because the friction of air can produce a very big additional stress.
Stress intensity when long filament solidifies is determined certain long filament performance (comprising elongation, fracture strength, boiling water shrinkage when for example rupturing).This stress is big more, and for example during the POY spinning, the performance number of these that obtain thread is just low more.
Thereby, have two possible methods to come these values of active influence from " on the mathematics " :-FR that makes a concerted effort can be reduced on the one hand, in usual way, this result is reached by the speed that reduces silk,-on the other hand, can increase the area value Q (dtex of given every rhizoid just) before solidifying.
In fact, these two mathematical selections are energy usefulness, are described as follows with reference to Fig. 2.
Element among Fig. 2 is that they mark with same label with shown in Figure 1 the same in essence.Difference is to be provided with a device (not expressing) to be used for producing along an air flow LS of the traffic direction of silk in Fig. 2.The air layer that air flow LS formation and long filament 16 on solidification point EP is adjacent, this air layer flows with speed VR at the silk traffic direction, and it is superficial velocity with long filament match (or almost coincideing).Make frictional force Fr become like this and can omit and disregard, thereby reduced FR with joint efforts.Air flow LS is on the some EB at a segment distance A place below plate 10 at first and long filament 16 contacts and keeps in touch up to solidification point EP with long filament always.
Stress on each cross section of the silk that on solidification point EP, helped the silk decreased locomotion between spinnerets and the some EP.Can make than preventing " constriction " (occur in just will solidify before, the long filament cross section becomes taper suddenly, thereby the long filament cross section after the curing is reduced) under the much higher speed of the silk speed that can produce the constriction result at present the minimizing of this long filament stress.
Fig. 3 represents first embodiment of the actual realization of this new principle.Now, spinnerets represents with label 25, the label of winding head be 27 and the bobbin label that in winding head, forms be 28.Some long filaments 29 form (what express among the figure is three) from spinnerets 25, they lump together at predetermined P place and form a F.Before winding head 27, do brightening by means of metering device 31, if desired can be by device 33 turbulization.What do not express in the drawings is measuring pump, and measuring pump was fed melt to spinneret orifice 25 with predetermined capacity in the unit interval.The hole count of this capacity and spinnerets and spinning speed are determined the thickness of every threads together, are referred to as the dezitex of every threads.Thus much, this process is identical with present general process.
In order to produce quick flow air layer, sealed close in spin duct 35 in the operation of silk before the solidification point EP.This pipe is guiding the air flow that is produced by negative pressure generator 37.The top 39 of pipe 35 is openings, therefore can allow indoor air to enter and in managing the said air flow of formation.The bottom 41 of pipe 35 is passed into rectangle chamber 43, and this chamber plays the effect of tube connector 35 and negative pressure generator 37, will do detailed explanation below.
The end portion of chamber 43 is to make surface with holes 47 and sealed by collecting ring 49, and collecting ring is connected with negative pressure generator 37 through passage 51.Be preferably in the passage 51 or on load onto some devices, for example valve 53, a choke valve 55 and being used to measured the meter 57 of the pressure differential before and after the choke valve, so that the speed of air flow can be controlled.Because such layout is known for the professional, so no longer be further described here.
Same reason, one is placed on above the top 39 of pipe 35 at the tapered degree of lip-rounding part of silk traffic direction (" funnel ") 59.The inner surface of funnel 59 (also can be horn mouth 58 in case of necessity) shape is preferably very little to the turbulent flow that air flow produces.Funnel 59 is placed on the inside of a perforate cylinder 61, and room air sucks by the hole.This perforate cylinder 61 extends rearward to the heating cabinet 63 that spinnerets 25 is housed.Second perforate cylinder 65 can be provided with around first cylinder 61, so that form a stable space 67 betwixt, it also helps to prevent the turbulent flow of air.The modification of shown device
A roller (draw-off godet) or roller combination can be contained in the exit of chamber 43 (before winding head)." the initial silk " that this stretches and come out from chamber in the time of being used in FDY or industry with the production of silk.Only the tension force of silk is adjusted before draw-off godet also can be used in and reel and silk is not stretched.
The internal diameter of pipe 35 can be 0.5cm～20cm for example.The material of pipe is unimportant, if long filament adhesion when contacting with its inner surface, and not fusion of tube wall itself.The internal diameter of pipe 35 is relevant with the selected vacuum magnitude of generator 37, so that can keep desired air velocity in pipe 35.This air velocity should preferentially be to be equal to or greater than spinning speed, the yarn speed after just solidifying.
Just begun to contact at spinnerets 25 and leaked-in air between the point of long filament a protection zone Z can be set.District Z can be installed on the following heating cabinet 63 of spinnerets 25 and constitutes by encircle 64.Another kind method is that 63 of heating cabinets are outstanding below 25 in spinnerets.Leaked-in air can obtain preheating.
In order to reduce the harmfulness of long filament 29 contact pipes 35 inner surfaces, can load onto an air jet system 60 at 39 places, top of pipe (between pipe 35 and funnel 59), air is sprayed along inner surface along pipe 35 axis directions.Air jet system 60 also can be used for repiece as servicing unit.
As already mentioned in the preface part that accompanying drawing is described, attachment device on can increasing according to the spinning threadling of " simply " among the figure is so that obtain known effect.As the example (have much is that the professional knows) of such layout, only mentioned after silk solidifies, heating of being proposed among DE-A-2117659 and the DE-C-4021545 here.DE2117659 has also adorned a godet roller device (a pair of draw-off godet) silk has been stretched.
Fig. 4 represents a kind of modification, and it makes the cooling of silk slack-off, hardens suddenly when spinnerets 25 has just come out so that prevent polymer.In this case, spinnerets 25 and then heating muff 70 descend rapidly with the temperature that prevents silk.Cylinder 61 usefulness dispensers 72 are divided into a upper part 61A and a lower part 61B, and hot-air is sent to the cylindrical portions may 61A above the dispenser, and cold relatively room air is allowed to enter into cylinder 61B part, and effect is further increased.
Air flow in the pipe 35 can be blown into air and produce from the top of pipe.
The air velocity that enters into pipe 35 can also can be adjusted with respect to the dividing plate 74 that cylinder is done to move at the traffic direction of silk around cylinder 61 with one.Dividing plate 74 is not with holes, thereby has limited indoor air enter into perforate cylinder 61 (or allow air enter) when dividing plate 74 moves down.
As above illustrated, the air velocity in pipe 35 should be the same with the speed of silk.Room air formed air flow in pipe preferably should be to be referred to as sucking (perpendicular to the length of silk) " lateral flow ".Must there be any turbulent flow in the room air that flows into, because turbulent flow can cause the inhomogeneities of a performance.Therefore air capacity must limit (by selecting the relatively littler pipe 35 of diameter) as far as possible, because a large amount of air can increase the danger of turbulent flow.Beneficial effect of the present invention and applicating example
The effect that higher long filament stress plays is to increase the degree of crystallinity of polymer tissue and the degree of orientation.Therefore, effect of the present invention is that the degree of crystallinity and the degree of orientation are limited.For this reason, Zui Jia Application Areas is that those can make these effects that the field of prime advantage is provided.For this point is described, must be at first to making differentiation between following " kind of silk ": a) industry with thread-these are produced with two-step method now, the first step spins " initial silk ", and in second step these (having solidified) initial silk is stretched, its objective is in order to increase its intensity greatly.Degree of crystallinity and degree of orientation both should hang down as far as possible in initial silk, so that allow to give maximum stretching when second step.For the sake of completeness, must illustrate that said step finishes in can be by step of two steps " or " at this.Add man-hour being referred to as two-step method, initial silk is to reel and bobbin is transported on another machine to stretch under low speed.Initial silk stretched on a pair of draw-off godet before reeling when " one-step method processing ".B) POY (pre-oriented yarn) weaves with silk-these silks (" pre-oriented yarns ") are as initial that adds later on, and later processing is called stretching or stretcher strain.In order to reach best result in second step, degree of crystallinity should not surpass the certain upper limit value.For example, polyester (PES) preferably has maximum degree of crystallinity 20%, and its given percentage elongation is about 80%～150%, and boiling water shrinkage is about 50 ± 10%.C) FDY (fullly drawn yarn (FDY))-weaving is no longer to have any further processed step just can use for final with silk-these silks (" full-drawn yarn ").In this case, allow higher degree of crystallinity, for example the degree of crystallinity of polyester fully drawn yarn is about 20～50%, and the percentage elongation that provides is 25～45%, and intensity is that 3～5CN/dtex and boiling water shrinkage are 0～10%.
According to Application Areas very big change is arranged though these examples clearly illustrate degree of crystallinity, every kind of purposes is all had a higher limit.
The present invention will influence the degree of crystallinity or the degree of orientation under given transporting velocity, therefore can be used for obtaining following effect :-spin silk (for example the transporting velocity between 7000 to 8000m/min replaces that to spin every rhizoid under the situation of 2500 to 5500m/min at present common speed be 0.5 to 30dtex POY silk, and keeps present existing performance) under than the high situation of present general speed with predetermined performance in transporting velocity.-for becoming long filament (for example being about 3000m/min in transporting velocity spins every rhizoid and be about 0.1 to 0.5dtex PES-POY silk) spinning under the present unlikely situation under thinner long filament or the transporting velocity by some polymer spun in economy.
Be below the spinning process known through spinning the silk of some kind after revising, list as application facet example of the present invention: the processing method of known polyester fullly drawn yarn (FDY)
A PES (polyester) silk is transported to one group of draw-off godet (not batching) with the speed that is about 3600m/min.This group draw-off godet gives about 1.45 stretching, and the silk after the stretching is reeled with the spinning speed of about 5200m/min, and every threads can arrive 6dtex.The new processing method of polyester fullly drawn yarn (FDY)
Adopt the present invention, the speed that is transported to one group of draw-off godet is brought up to about 7000m/min, to processed thread performance do not have great variation.Stretching remains unchanged, and is therefore constant to the property retention of known silk.Draw rate is brought up to more than the 10000m/min.The industry known fabrication method of silk (for example cord fabric thread)
PES (polyester) or PA (polyamide) silk are transported to one group of draw-off godet (for example polyester cord is about 400m/min) with 400 to 600m/min speed.After one group of godets-stretching, silk is with the draw rate between 2000 to 3500m/min reel (for example polyester cord is 2200 to 2500m/min).The every threads that batches silk can arrive 10dtex, and intensity is between 7 to 9g/d.The industry new machining method of silk
By adopting the present invention, a speed to one group of draw-off godet of sending from spinnerets surpasses 1000m/min, and the performance of silk keeps identical with known processing method.This just makes draw rate be increased to above 5500m/min, and the performance of the silk of the property retention of silk and known fabrication method is identical.The known fabrication method of the low contractile filaments of high-modulus
HMLS (high-modulus, the low contraction) silk is used to cord fabric thread now.During spinning, Polyester Filament is transported to one group of draw-off godet with 3000 to 3500m/min speed, obtains stretching at this initial silk.Silk after the stretching is reeled with the draw rate that is about 6000m/min.The degree of orientation that let it be relative with degree of crystallinity all than higher, such silk can satisfy the requirement of certain purposes.The novel polymer that is used for high-modulus, low contractile filaments
The low contraction of high-modulus processing method can not be transferred to the polymer of other kind without difficulty, because other polymer has different reactions to spinning condition.Under above-mentioned spinning condition, polypropylene (PP) and polyamide (PA) (comprising PA 6.6) have produced the degree of crystallinity more much higher than polyester on the first lead dish, and this can have problems to stretching.The present invention can be used in such situation to reduce this unacceptable degree of crystallinity.
When being lower than under a certain limiting range of stress, processes by long filament, the taperization that long filament can continue before solidification point, and curing occurs in and is called the vitrification point place.If stress has increased, polymer solidifies (even cooling condition is held or is constant) on vitrification point, and this curing meeting is in conjunction with increasing degree of crystallinity.This has increased the danger of " constriction " in fact.
The danger that under higher silk speed, can have filament breakage.Reduce stress and can significantly reduce this danger, and can also be used for adjusting other spinning condition, make this dangerous further minimizing (control).These conditions comprise, acceleration for example, the elongation of unit length (△ */*) and cooling.Following machined parameters can influence these parameters: distance A (from the top of pipe to spinnerets), tube length, the speed of air flow and air themperature.So just can obtain approaching and the present identical spinning condition of general condition.
Reach these effects by variations in temperature, for example the example in EP456505 is not a primary and foremost purpose of the present invention.But the present invention can be illustrated in down as reference Fig. 5 and Fig. 6 in conjunction with the method based on heat treatment.In these figure, part is the same among the embodiment with Fig. 3, and marks with same label.
Therefore, include according to the embodiment of Fig. 5, for example, spinnerets 25, pipe 35, chamber 43 and air plenum 51.Zone between spinnerets 25 and the pipe 35 is not expression in detail in Fig. 5, but can infer out according to Fig. 3 or Fig. 4.
Among Fig. 5, a heat treatment passage 80 is arranged below chamber 43.In this passage, the silk that has solidified is heated to (but under fusion temperature) more than the vitrifying point again to the hot-air at upper reaches (temperature for example 200 to 240C).The silk that comes out from passage is transported to a pair of draw-off godet 82,84, but silk is not by godets-stretching.Thread tension when entering into a pair of draw-off godet be silk passage stretching or elongation points DP on tensile force.At this thread tension after draw-off godet is suitable for being wound up on the winding head 27.
Shown in Figure 6 is the sketch form that this method is preferentially expanded the friendship type, and wherein heat treatment is to be combined in the device provided by the present invention.Fig. 6 has expressed the end portion (approaching solidification point EP) of pipe 35.The chamber 43 of Fig. 3 is replaced with a relatively big major path 90 now, and its purpose for example makes the speed of air flow be reduced to about 500m/min from about 7000m/min.
Flow air is heated by heater 92 at a slow speed in passage 90, the temperature of silk is reached be higher than vitrifying point but be lower than melting point.The speed of air flow hands over the resistance (windage power) that has also increased air slowly consequently correspondingly to increase the tension force of silk.This makes the lower part of passage 90 produce one and stretches or elongation points DP.Stretching increases degree of crystallinity, obtains low boiling water shrinkage.The silk that this processing method is produced can directly supply textile applications (for example knitting, as to weave).
Claims (10)
1. melt spinning method, wherein, there is an air flow to be created in the surface of silk at the silk traffic direction, it is characterized in that, air flow flows through the part of filament length degree at least, even and this a part of polymer material does not solidify, and on the length should be in this section in the speed of the air flow of silk traffic direction, can not make silk be subjected to any stress, or be subjected to omit the stress of disregarding owing to silk and in abutting connection with the friction between the air layer.
2. according to the method for claim 1, wherein silk is transported to a coiler device and is wound up on the bobbin (package) with predetermined speed, it is characterized in that, winding speed should be, under the air flow that does not have a traffic direction helps, the speed of yarn is that the predetermined stress that silk is added of lighting of from spinning threadling is decided, this stress will have influence on the performance of silk, produce an air flow from said lighting, air flow is that the performance that the frictional force between the air layer of silk and adjacency is remained on silk has under the limiting value of significant impact in the speed on the silk traffic direction for this reason.
3. according to the method for claim 1 or 2, it is characterized in that the air flow that accompanies with silk is a point to the spinning threadling at least, the performance of silk is not influenced by said frictional force can again when arriving this point, just to the point that becomes curing near polymer material.
4. melt spinning method, it is silk to be transported to a coiler device also be wound up on the bobbin with predetermined speed there, the size of winding speed should be adjusted at, when not having the help of an air flow will make the silk operation, the traffic direction of silk produces " constriction ", it is characterized in that the help of one air flow being arranged thereby prevented constriction at the silk traffic direction.
5. according to the method for claim 4, it is characterized in that this method also can be implemented according in the claim 1 to 3 any.
6. the device that is used for the long filament melt spinning that has spinnerets and winding head, it is characterized in that, the device that a generation air flow is arranged at the silk traffic direction, the air flow speed that acts on the silk surface is suitable for the superficial velocity of silk, thereby making only has very little frictional force to produce between the air layer of silk and adjacency, and the structure of described device should make air flow from spinning threadling one light mobile, have influence on the performance of silk if there is not the help of air flow to produce frictional force in this, air flow flow to till the point of long filament curing always.
7. according to the device of claim 6, it is characterized in that this device comprises the pipe of a sealing spinning threadling, air flow is directed through near the pipe the long filament.
8. according to the device of claim 6 or 7, it is characterized in that air flow is produced by the generation of negative pressure.
9. according to the device in claim 7 or 8, it is characterized in that room air enters into the top of pipe and forms air flow.
10. according to any the device in the claim 6 to 9,, it is characterized in that the device that is contained on the spinnerets can cool off the long filament retardation after coming out from spinneret orifice.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH361093 | 1993-12-03 | ||
| CH3610/93-4 | 1993-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1119461A true CN1119461A (en) | 1996-03-27 |
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ID=4259692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94191488A Pending CN1119461A (en) | 1993-12-03 | 1994-12-02 | Melt spinning method for filament |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0682720B1 (en) |
| JP (1) | JP4101869B2 (en) |
| KR (1) | KR100344007B1 (en) |
| CN (1) | CN1119461A (en) |
| BR (1) | BR9406246A (en) |
| DE (1) | DE59406138D1 (en) |
| TW (1) | TW268054B (en) |
| WO (1) | WO1995015409A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109780C (en) * | 1998-11-09 | 2003-05-28 | 巴马格股份公司 | Method and device for producing high oriented yarn |
| CN1117186C (en) * | 1998-07-23 | 2003-08-06 | 巴马格股份公司 | Spinning device and method for spinning synthetic thread |
| CN100453714C (en) * | 2000-01-20 | 2009-01-21 | 因维斯塔技术有限公司 | High-speed spinning method of bicomponent fiber |
| CN102869819A (en) * | 2010-03-24 | 2013-01-09 | 欧瑞康纺织有限及两合公司 | Method and device for melt spinning and cooling a plurality of synthetic threads |
| CN110499537A (en) * | 2018-05-16 | 2019-11-26 | 日本Tmt机械株式会社 | Cooling device in spinning |
| CN117684276A (en) * | 2022-09-12 | 2024-03-12 | 欧瑞康纺织有限及两合公司 | Apparatus and methods for manufacturing synthetic filaments |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6090485A (en) * | 1996-10-16 | 2000-07-18 | E. I. Du Pont De Nemours And Company | Continuous filament yarns |
| US5824248A (en) * | 1996-10-16 | 1998-10-20 | E. I. Du Pont De Nemours And Company | Spinning polymeric filaments |
| TW476818B (en) * | 1998-02-21 | 2002-02-21 | Barmag Barmer Maschf | Method and apparatus for spinning a multifilament yarn |
| DE59910294D1 (en) | 1998-06-22 | 2004-09-23 | Saurer Gmbh & Co Kg | SPIDER DEVICE FOR SPINNING A SYNTHETIC THREAD |
| WO2000008242A1 (en) * | 1998-08-07 | 2000-02-17 | Barmag Ag | Thread oiling |
| DE19915762A1 (en) * | 1999-04-08 | 2000-10-12 | Lurgi Zimmer Ag | Cooling system for filament bundles |
| US6444151B1 (en) | 1999-04-15 | 2002-09-03 | E. I. Du Pont De Nemours And Company | Apparatus and process for spinning polymeric filaments |
| EP1079008A1 (en) * | 1999-08-26 | 2001-02-28 | B a r m a g AG | Process and apparatus for the spinning of a multifilament yarn |
| EP1228268B1 (en) | 1999-09-07 | 2004-02-18 | Barmag Ag | Method for fusion spinning |
| US6692687B2 (en) * | 2000-01-20 | 2004-02-17 | E. I. Du Pont De Nemours And Company | Method for high-speed spinning of bicomponent fibers |
| US6899836B2 (en) | 2002-05-24 | 2005-05-31 | Invista North America S.A R.L. | Process of making polyamide filaments |
| DE112005003523A5 (en) * | 2005-01-28 | 2008-01-03 | Mmr Marketing & Management Ag Rotkreuz | Extruder system for strand forming a fluid |
| JP2015014071A (en) * | 2013-07-08 | 2015-01-22 | Ｔｍｔマシナリー株式会社 | Line-of-thread cooling system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH468482A (en) * | 1967-05-01 | 1969-02-15 | Inventa Ag | Device for preventing air turbulence in the spinning shaft |
| US3611485A (en) * | 1968-12-30 | 1971-10-12 | Monsanto Co | Spinning chimney |
| ES2080396T3 (en) * | 1991-09-06 | 1996-02-01 | Akzo Nobel Nv | DEVICE FOR FAST SPINNING OF MULTIFILAMENT THREADS AND THEIR USE. |
| DE9306510U1 (en) * | 1992-06-13 | 1993-06-09 | Barmag AG, 5630 Remscheid | Spinning device for spinning synthetic threads |
| DE4223198A1 (en) * | 1992-07-15 | 1994-01-20 | Zimmer Ag | Synthetic filament prodn. - using high speed extrusion to create airflow in cooling chamber with increased vacuum below |
| BR9400682A (en) * | 1993-03-05 | 1994-10-18 | Akzo Nv | Apparatus for the fusing spinning of multifilament yarns and their application |
-
1994
- 1994-12-01 TW TW083111172A patent/TW268054B/zh active
- 1994-12-02 CN CN94191488A patent/CN1119461A/en active Pending
- 1994-12-02 BR BR9406246A patent/BR9406246A/en not_active IP Right Cessation
- 1994-12-02 WO PCT/IB1994/000380 patent/WO1995015409A1/en not_active Ceased
- 1994-12-02 KR KR1019950703168A patent/KR100344007B1/en not_active Expired - Fee Related
- 1994-12-02 JP JP51551495A patent/JP4101869B2/en not_active Expired - Fee Related
- 1994-12-02 EP EP95900885A patent/EP0682720B1/en not_active Expired - Lifetime
- 1994-12-02 DE DE59406138T patent/DE59406138D1/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117186C (en) * | 1998-07-23 | 2003-08-06 | 巴马格股份公司 | Spinning device and method for spinning synthetic thread |
| CN1109780C (en) * | 1998-11-09 | 2003-05-28 | 巴马格股份公司 | Method and device for producing high oriented yarn |
| CN100453714C (en) * | 2000-01-20 | 2009-01-21 | 因维斯塔技术有限公司 | High-speed spinning method of bicomponent fiber |
| CN102869819A (en) * | 2010-03-24 | 2013-01-09 | 欧瑞康纺织有限及两合公司 | Method and device for melt spinning and cooling a plurality of synthetic threads |
| CN110499537A (en) * | 2018-05-16 | 2019-11-26 | 日本Tmt机械株式会社 | Cooling device in spinning |
| CN110499537B (en) * | 2018-05-16 | 2022-11-25 | 日本Tmt机械株式会社 | Spinning cooling device |
| CN117684276A (en) * | 2022-09-12 | 2024-03-12 | 欧瑞康纺织有限及两合公司 | Apparatus and methods for manufacturing synthetic filaments |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1009718A1 (en) | 1999-06-04 |
| EP0682720A1 (en) | 1995-11-22 |
| DE59406138D1 (en) | 1998-07-09 |
| WO1995015409A1 (en) | 1995-06-08 |
| BR9406246A (en) | 1996-01-09 |
| JPH08506393A (en) | 1996-07-09 |
| KR960703374A (en) | 1996-08-17 |
| JP4101869B2 (en) | 2008-06-18 |
| KR100344007B1 (en) | 2002-11-30 |
| TW268054B (en) | 1996-01-11 |
| EP0682720B1 (en) | 1998-06-03 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |