CN88102349A - The method of production polypropylene yarn and device thereof - Google Patents
The method of production polypropylene yarn and device thereof Download PDFInfo
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- CN88102349A CN88102349A CN88102349.3A CN88102349A CN88102349A CN 88102349 A CN88102349 A CN 88102349A CN 88102349 A CN88102349 A CN 88102349A CN 88102349 A CN88102349 A CN 88102349A
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Abstract
Utilize melt spinning and stretching with the continuous polypropylene yarn of working system production, spin the monofilament of sufficient amount simultaneously.Carrying out melt when spinning, monofilament by spinning head enter one over against air quenched district or axle be cured.Monofilament is arranged to the real planar array of the parallel and space of yarn count, and monofilament is stretched and makes yarn count reach abundant orientation then.Every yarn all along separately independently track providing 50% CONTACT WITH FRICTION length at least on 2～6 rotating cylinders altogether by the surface portion of rotating cylinder, wound up with 1000 meters/minute～2000 meters/minute speed at least as the yarn count of final product.
Description
Generally speaking, the invention relates to the production polypropylene yarn, particularly about method with this yarn of melt spinning manufactured.
The existing commodity of producing with melt spinning method of polyacrylic fibres, as hang the monofilament that fishing line uses, the artificial fibre that carpet yarn is used.But, want that polypropylene filament (yarn) is introduced garment market can arrive some problems by magnetic.Therefore, the fine-count yarn of the high-quality rule that all has been the one-tenth done of nylon or polyester, and with the yarn of production of propylene, if available fully, then would be exception.Low with regard to polyacrylic cost, mechanical strength good, have heat and chemical stability and as if with regard to having good moisture content transmission capacity in the vapor phase, it can become very desirable textile strand, this is that people are unexpected.
Yet key issue is, the process technology of polyester and polyamide, and particularly preorientation yarn (POY) working system is unsuitable for polyacrylic production fully.It is believed that ready-made continuous yarn production method and this shortage transferability of device are mainly due to such fact; The polypropylene of fusion shows as a kind of non-newtonian liquid character, this liquid has the structural viscosity phenomenon, thereby cause a kind of being called as " draw resonance " or " spinning resonance " phenomenon, for example Fig. 4 of the patent A-025812 of EUROPEAN PATENT OFFICE or United States Patent (USP)-A-4347206 and shown in Figure 5.
Simple and exaggeration some says that polypropylene not only has the dyestuff swellability to extruding, and the swelling body that forms below spinning head dwindles downwards, thereby generation is as the long filament that differs in size of a string sausage.Various processes in the past all be intended to improve polypropylene material or as a kind of special method (as French Patent (FRP) 1276575, patent-the A-0028844 of EUROPEAN PATENT OFFICE, the Germany patent-A-3323202), therefore, it seems, get and at first make the semi-finished product long filament by the manufactory of yarn, then, again in secondary independent technical process, as user by yarn, according to the requirement of most of industrial yarns, carry out actual texture (distortion) orientation or stretch orientation, can reach acceptable good result.
But, combined method, promptly on a process units, utilize melt spinning and extension, from polymer without spinning, to those methods of producing the final polypropylene yarn that the long filament that fully is orientated by multiply forms, run into the low problem of process velocity, under typical situation, its process velocity is lower than 50 meters/minute, perhaps reach acceptable 1000 meters/minute when above when process velocity, each stretching device obtainable yam count but be subjected to serious restriction.Therefore the output of each device that drops into can not be satisfactory, or must many stretching devices of operation and maintenance.
Therefore, main purpose of the present invention provides a kind of combinations produce method.Utilize this method, can be on a stretching device, produce the finished product yarn with the speed more than 1000 meters/minute, yarn can by multiply as 8～16 strands or more multiply form, the finished product yarn both can be a full orientated yarns (FOY), also can be the bulked yarn (BCY) with yarn Denier and filament denier, and it is applicable to clothes or other application, and keeping polyacrylic valuable characteristic, improved product quality.
Further aim of the present invention provides a kind of device of realizing this novel method.
These purposes of the present invention and other purpose can come into plain view by following explanation.According to the present invention, be in the combinations produce method, utilize melt spinning and extension to produce the polypropylene yarn of forming by the monofilament of many abundant orientations, characteristics of the present invention are:
(A) push the monofilament of sufficient amount simultaneously, to form at least 8 strands, best 10 strands, 12～16 strands of continuous multifilament yarns (being yarn) in typical case, per share yarn is made up of 10 monofilament at least, as 30 strands, 60 strands or the multifilament of multiply more, at least 400 meters/minutes of extrusion speeds, more preferably greater than 600 meters/minute, and to make monofilament enter one be a vertical air quenched district basically, and monofilament is solidified.
(B) monofilament be arranged to that a yarn count is parallel to each other, the complete planar array of space (as 50～5 mm distance at interval), (A) is corresponding for yarn count wherein and step.
(C) yarn count by the rotating cylinder of several shaft parallels the circumferential surface part and when remaining in the above-mentioned planar array, just yarn count is stretched, for example, with the typical draw ratio of 1 ÷, 1～1 ÷ 3, to reach desired abundant orientation; Each yarn count, along one independently passage by above-mentioned circumferential surface part, and their autonomous channel be fully by with parallel to the axis plane regulation of intersecting vertically of rotating cylinder; Every yarn all partly has CONTACT WITH FRICTION with circumferential surface, from 1000 to 6500 millimeters of the length of contact channels, 1000～4000 millimeters preferably, preferably 1500～3000 millimeters; This contact channels length has 50% at least, preferably has 75%～100%, around 2～6, and 3～5 preferably, preferably on 4 rotating cylinders.
(D) after the stretched step (C), can arbitrarily provide texture (distortion) or coiling step.
(E) be preferably that each yarn count of space provides first and second groups Fracture Control device in the individual passage.
(F) at last the yarn count that obtains as product is reeled, product such as FOY or BCY yarn, its typical yarn count dawn number is between 40～800, and at every 1.5～15 dawn of monofilament, at least 1000 meters/minutes of winding speeds are as 2000 meters/minute or higher.
The employed device of this method comprises some normal elements, that is:
(a) spinning head, as common spinning plate, or the bull that links with extruder and pump spray guide frame, gauze plate or spinning head all have many holes, are used for the polyacrylate compound of fusion is carried out the melt spinning.
(b) vertical axis or straight trough device, be used for fusion polypropylene after spinning head penetrates, with its cooling or quenching and curing, to form many monofilament.
(c) combination of monofilaments device is used for forming at least one yarn.
(d) stretching device is used at least the monofilament of one yarn count fully is orientated.
(e) coiler device.
This apparatus features is that spinning appts (a) has the enough holes of quantity, with the yarn of at least 8 strands of formation, as 10,12,16,16 or the yarn of multiply more, per share yarn comprise 10 monofilament at least, in typical case, comprise 30,60 or the deformation texture yarn of multiply approximately; The vertical axis device has enough length, make monofilament after spinning appts penetrates, and with have a clear passage length before machinery silk one contact device begins to contact, at least 2.5 meters of machinery silk one contact devices, 3-5 rice or more for example, though can make clear passage length surpass 7.5 meters, make the general recommendations need not; Stretching device is made up of some priority rotating cylinders, the rotating shaft of rotating cylinder is parallel to each other and (promptly has that and end parallel drum surface, join just the yarn count contact), the layout of rotating cylinder makes the passage length of itself and yarn count CONTACT WITH FRICTION have 1000～6500 millimeters, 1000～4000 meters preferably, preferably 1500～3000 meters, their CONTACT WITH FRICTION length will have 50% at least, preferably has 75%～100% around 2～6,3～5 preferably, preferably on 4 rotating cylinders.
Therefore, the present invention is furnished with the device that can spin the monofilament of sufficient amount rapidly, be used for a large amount of productions of yarn, the monofilament that utilizes stretching device will make up resultant yarn at last stretches simultaneously, promptly, equally along be parallel to each other, independent track stretches on the few big rotating cylinder of quantity, the CONTACT WITH FRICTION length of track is in the limit range of regulation, and the most surfaces of the big rotating cylinder of main points at least.
When adopting method of the present invention, rotating cylinder is all the same with usual way usually, holds them in a predetermined elevated temperature, and will rotating cylinder can be gathered way according to the needs of concrete draw ratio in common mode.
Confirmed already that when using method and apparatus of the present invention, the situation that broken yarn takes place often seldom; Because do not want to be subjected to the constraint of any specific theory, therefore, think, prolong uniformity and hot transmission that the interface contact between rotating cylinder and the silk tends to improve mutual rubbing action.For practical use, as the great majority that stretch or whole rotating cylinder identical diameter to be arranged according to the present invention; At least 300 millimeters of rotating cylinder diameters, preferably minimum 400 millimeters, though also can use greater than 1000 millimeters diameter, actual use in generally preferably need not.The length of rotating cylinder (=width) requires to depend between yarn count that stretches simultaneously on certain rotating cylinder and parallel yarn count and requires or desirable minimum range.Typical yarn count distance generally between 5～50 millimeters, for example 8～15 millimeters.Length for the typical rotating cylinder of 16 yarns that stretch simultaneously is between 200～500 millimeters.
The additional advantage of big rotating cylinder extension of many yarn counts of stretching simultaneously is, if broken yarn takes place, as long as the distance between the adjacent rotating cylinder is suitable, can quite simple mode control it, gets rid of and repairs.
As for not being very strict as if to surfacing and surface condition; Stainless steel surfaces, chrome-plated surface and similar structural metal all are suitable for.
For structure with use for simplicity, this act is bright has selected four stretching rotating cylinders altogether for use.For example, when will be when diameter provides 1500～3000 meters desirable contact length between 400～500 millimeters and on identical 4 rotating cylinders altogether of diameter, first rotating cylinder " upstream " (promptly near spinning head) and second rotating cylinder subsequently, will be with a common drive unit, to rotate relative to the peripheral speed of " paper ".Certainly, the peripheral speed of this " low " will depend on extrusion speed, but in typical case, it can be between 600 meters/minute and 1000 meters/minute.Though the first, two rotating cylinder has a common speed, this does not also mean that their bodies must have identical speed; For example, make second rotating cylinder in first group of low speed rotating cylinder with the peripheral speed higher than first rotating cylinder, for example high by 5～15%, rotate, may bring some advantages.
Just now said ideal scheme, its second group of rotating cylinder then with public " height " peripheral speed, for example rotate with 1200～3200 meters/minute speed, and its concrete numerical value depends on the peripheral speed and the desired draw ratio of first group of rotating cylinder.In typical case, this draw ratio is the scope at 1 ÷, 1 to 1 ÷ 3.Moreover " public " speed of second group of rotating cylinder does not also mean that identical speed; The peripheral speed of second rotating cylinder in second group (being the last rotating cylinder in the above-mentioned optimum stretch scheme) can be higher than first rotating cylinder in second group.
According to the requirement of product, texture (distortion) or winding portion can be provided, can use to add commonsense method and the device that the propylene dimer yarn is used.In this programme, before and after distortion and coiling step, particularly will be with texture (distortion) and the yarn of reeling from a supporting location, such as taking under the situation of coner main shaft general rotating cylinders that all will have some to add to the groove of inhaling bucket from a perforation.
In general, winding speed is at least 1200 meters/minute, but for many purposes of the present invention, also can adopt higher winding speed, for example 2000 meters/minute or higher speed.
Because the coiling itself of texture (distortion) and winding step and finished product yarn is common work, can adopt commercially available device to carry out, therefore, this respect need not be given unnecessary details at this.
Though the control method of broken yarn and device are matters of public knowledge, substantially exceeding 500 meters/minute speed, a large amount of yarn aspect that stretches the invention provides its fresh content on a stretching device.Particularly, because broken yarn be from can not getting rid of fully, so broken yarn is carried out simply, effectively controls and repair is the important additional content of the present invention.
At first, as mentioned above, adopt the i.e. innovation of 8 or more yarns of big rotating cylinder stretching-yarn row generally to contain based on big drum surface, during stretching, yarn is stretched along passage independently, and that ends the gyroaxis of all stretching rotating cylinders at parallel and vertical end each drawing passageway.Utilize the enough spacings between the adjacent rotating cylinder, be at least half of average rotor diameter of any two adjacent rotating cylinders of stretching device as its typical mutual spacing, like this, the workman who is responsible for broken yarn control work just is easy near stretching device, does not therefore just contain what problem to repairing broken yarn.
And, according to an ideal scheme, first and second circuit yarn controllers are located at the end of starting end (promptly not between first major diameter rotating cylinder-promptly is near the rotating cylinder of spinning head and the 2nd major diameter rotating cylinder) and every yarn count CONTACT WITH FRICTION passage length (promptly not after last major diameter stretching rotating cylinder of stretching device.) can add less rotating cylinder in draw stage, for example can between the major diameter rotating cylinder, add little rotating cylinder, but this is also inadvisable.Generally speaking, in draw stage,, only adopt the major diameter rotating cylinder just much of that to the skew of yarn road.
According to the present invention, several major diameter rotating cylinders seldom just combine the broken yarn control of wire drawing and stretching device starting end and end, thereby can carry out broken yarn control and repairing especially effectively, promptly be on a stretching device, with 1000 meters/minute or higher speed, with a draw stage, also like this when stretching 10,12 or 16 parallel yarn counts simultaneously, overstretching is not to carry out successively on several big rotating cylinders.
According to the present invention, second yarn break controller, the typical case is a yarn checkout gear, and it can detect the interruption or the scarce yarn in yarn road, and can start a little scissors, and this little scissors is to prepare for the yarn count of first and second circuit yarn controllers.Each yarn is cut and is associated with a suction hole, to receive the broken yarn leading edge that newly shears off.Any yarn takes place when disconnected, a recoil simulator of the action that matches with second and first circuit yarn controller will be triggered, and certainly, will notify the workman of the responsible broken yarn work in this place.Then, this workman will utilize a movable aspirator, after yarn is cut action, the suction inlet of aspirator is put in the broken yarn passage, and cuts this yarn by hand, makes the new leading edge of broken yarn be drawn onto this aspirator.So do not stopping under the condition of production of broken yarn not, the yarn that the workman just can be easy to have broken originally inserts corresponding passage again, this corresponding yarn road is easy to recognize, will make the yarn row imperfect because yarn has broken, and he is easily near the surface of major diameter rotating cylinder simultaneously.
Broken yarn is inserted common additional excessively (distortion) texture (making texture) again and after the winding stage, the yarn of sending into again just leads to up-coiler or leads to benefit yarn feeding device with matching from movable aspirator.
This circuit yarn controller comprises various forms of yarn aspirators, and yarn detector etc. all are the things that can buy, except yarn count, need not be further described.Because each stretching device of the present invention draws eight yarns at least, have 16 yarns in typical case, may require its unique control device, therefore, requirement combines various standard set-ups, for example provides a cover scissors/aspirator and a yarn detection part for every yarn.And, be easy to send in order to realize beginning yarn and broken yarn to repair, an ideal scheme of first and second circuit yarn controllers provides automatic yarn-feeding device, and comprise the guide groove of some yarns, guide groove is corresponding with the yarn row fully, and is distributed on the stock, and stock extends in the whole width of yarn row.For some yarns or whole yarn by rail portion are led, be provided with an elongated displaceable slide bar, this track is not just crossed over them by groove.Only when starting or benefit yarn, this slide bar just is in this position, and when whole yarn row passed through the slide bar top, slide bar was withdrawn from, and makes all yarn counts put into the slide bar groove again.
With reference now to accompanying drawing, go through the present invention, wherein:
Fig. 1 is the diagrammatic side view that realizes the device of method of the present invention.
Figure 1A is the plane of the spinning appts of Fig. 1 device.
Figure 1B is the diagram perspective drawing of a stretching rotating cylinder of device shown in Figure 1.
Fig. 1 C is the simplified perspective view of guide rod that has the slide bar of mutual coordination, and slide bar is used for by first or second circuit yarn controller skew and sends yarn count again to.
Fig. 2 is the semigraphical formula side view of the whole process equipment of prior art, and this equipment is with melt spinning and extension production polypropylene yarn (or claiming multiple long filament-contunuous polypropylene multifilament yarn).
Fig. 2 A is the enlarged drawing of the draw roll that uses in the prior art of Fig. 2.
Fig. 3 is the schematic diagram of the big stretching rotating cylinder of the inventive method use, the many parallel yarn count that wherein is stretched simultaneously.
Fig. 4 is a semigraphical side view of realizing the device of the inventive method.
Fig. 4 A is the top view of Fig. 4 device.
The polypropylene that is applicable to this method melt spinning can be from commercial acquisition, for example registration mark be MOPLEM, be exactly wherein a kind of by Italian Himont product sold.The industry spinning grade particles material that contains or do not contain common additive all is suitable for, and in other words, it is general and do not require the material parameter or the special formula of strictness especially to use method of the present invention; At least having about 10 minutes Grams Per Minutes, for example the polypropylene homopolymer of 10～12 fens Grams Per Minutes or bigger molten ether index (ASTMD 1238/L) being arranged is a little typical examples, and they are under 230 ℃ and 21.6 newton's situation, and its melt index reaches 18 fens Grams Per Minutes; Flexible resilient modulus (ASTMD 790) is at least about 1500 Newton/millimeter
2, for example about 1700 Newton/millimeter
2; (ASTMD 638 in yield point; ASTM-American Society for Testing Materials) TENSILE STRENGTH is 35～40N/ millimeter
2, as 38N/mm
2; About 10% at the percentage elongation (ASTMD 638) of yield point, for example 11%; The Vicat softening point is 150～160 ℃ (ASTMD 1525), for example 155 ℃.Have found that the material of molecular weight distribution value (being the weight of mean molecule quantity and the ratio of average weight number) from 5～6 all is applicable to the method that is proposed.Before using, can use coloured masterbatch material or add colorant and other additive.
In a word, being used for polypropylene of the present invention should be able to use commercial commercially available extruder and spinning pump to carry out the melt spinning, at least can pass through the hole of spinning plate or spinning head with 400 meters/minute extrusion speed, the diameter of spinning head should adapt to and spins the requirement that every rhizoid has the monofilament at 1～15 dawn, typical yarn dawn number is between 40～800 dawn, therefore, the polypropylene that is suitable for must " fully be orientated ", say in some sense, by it being stretched to the degree that flows near plasticity, the silk that extruding and stretching are obtained can reach molecularly oriented.Generally speaking, if with the spun silk of melt before fully stretching and " stretchings " silk that obtains after solidifying compare, reduce or reduced percentage elongation greatly through abundant thread will demonstrating of being orientated.Under the typical situation, fully the silk of orientation at room temperature has it approximately less than 250% percentage elongation alone.Usually, the last yarn that obtains by the present invention has less percentage elongation, but it depends on the FOY yarn or the BCY yarn of production, promptly depends on after stretching whether used texture (distortion) and winding stage.
Therefore, so-called " fully orientation " comprises " orientation cmpletely " and the approaching degree that satisfies the general final use of yarn.
First main feature of method of the present invention is the quantity of the yarn produced simultaneously with a stretching device, or by the number of the yarn of the present invention processing, here, one " long filament " (filament) be an endless " fiber " (fiber), " monofilament " (individual fitament) is meant the threads in the many long filaments that form yarn one-tenth " yarn count " (a yarn strand), the latter is called one group of monofilament, can extend to be simple group or unit; When application was of the present invention, these yarn counts can be with 1～8, and 10,12,14 or 16 consecutive numbers comes mark, will depend in the method for the invention the actual yarn count number of real work on each stretching device to using that number.
With the same usually, an every yarn that props up yarn (multifilamentyarn) again all comprises many monofilament, comprises 30,60 even 120 monofilament in typical case.When saying a yarn, then think in this yarn, to have 10 monofilament at least here.This is a practical problem, rather than theoretical question, because common yarn all includes and substantially exceeds 10 monofilament.
Therefore, first major part of the device of realization the inventive method should comprise spinning head apparatus 11 as shown in Figure 1, it can be a fixing spinning plate, perhaps the most handy one or several frame plate 113,114(is with reference to Figure 1A) level one-tenth, each frame plate comprises that some are interchangeable, such as being circular spinning head lining 111 and 112, lining will meet the requirement of the monofilament number of filament denier or every yarn, and the cross section of monofilament will meet the requirement of end product yarn.
Because importantly to the inventive method; The monofilament that spins sufficient amount with melt can form 8 yarns at least at each stretching device, therefore, think these yarns whether by a common axis 12, perhaps whether to constitute (explanation has 121 and 122 two chambers among Fig. 1 and the 1A) more than the chamber by one be not important to this common axis.And whether divide into groups according to yarn count in the hole of extruded hole or Yarn Feeder Device, perhaps they orientation neither be not main in groups when solidifying.The yarn gatherer 131,132 that is made of row's " hook " or " ear " normally is used for desired monofilament number is collected every yarn.
" extrusion speed " is another important feature of the present invention, and in this, it has determined minimum production speed, and by the present invention, it is at least 1000 meters/minute.So-called " extrusion speed " and " melt spinning speed " synonym, but not necessarily be meant from the speed of the melt of spinning head ejaculation itself, and be meant the speed that solidify to form, mainly be the monofilament of non-orientation.In general, available at least 400 meters/minute extrusion speed work of the present invention.
According to the present invention,, can adopt common extruder assembly 10 for suitable melt polypropylene raw material is delivered to spinning head apparatus 11.For example, for the yarn of producing for 40～250 dawn, can use screw diameter is 1 * 75 millimeter extruder 100, and screw diameter is 1 * 90 millimeter, can be suitable for producing the yarn at 150～800 dawn, at this moment, can produce 16～32 yarns altogether from extruder 100.With common the same, adopt a spinning pump 101 and heater 102 that the melt polypropylene of enough and suitable thermal control is delivered to spinning appts 11 usually.
Figure 1A is a semigraphical plane of seeing spinning head end in the past from axle 12, the top of axle is made up of the cooling chamber 121,122 of pair of parallel, cooling chamber is surrounded 123,125 and 124,126 by the breathable inside and outside wall respectively and has sent the cold air laminar flow through pipeline 129.Sidewall 127,128 does not need to breathe freely, but preferably its antetheca 125,126 can be easy to remove, so that be convenient near spinning head end 111,112.
Will more specifically illustrate as following, when when first rotating cylinder 141 forms the yarn row, under any circumstance, will depend on that time per unit flows in the intensity that spinning head forms the cooling of 8 yarns or quenching at least and by by axle 12 or in the quality of the melt polypropylene in the air quenched district that axle 12 forms.But, in general, according to the present invention, preferably, vertical length or " highly " H from the lower end of spinning head 111,112 to first axle giving the contact of yarn machinery contact device should be 2.5 meters at least, such as 3～6 meters, but because some actual cause have surpassed above-mentioned numerical value, about 7.5 meters.
Next important step of method of the present invention is the planar array A that forms yarn count S, and therefore, monofilament F is collected or combination or yarn, and under the normal condition, these yarns are formed by the monofilament of equal number, comprise 64 monofilament such as every yarn.These silk groups not only can form in advance by spinneret orifice 111,112, but also are " hook " or " ear " of having arranged shape such as horizontal guide rod 131,132 from the yarn that shaft portion 121,122 comes out.According to the present invention, its monofilament is closely wrapped up yarn together, that become set each other, just is sent to the surface of first rotating cylinder of stretching device 14 now, to form " yarn row ".According to the present invention, a kind of like this characteristics of yarn row are will all be arranged in parallel at all yarn counts that stretching device stretches and embark on journey; Because that only separates a distance each yarn count, such as separating 0.5～50 millimeter or bigger distance, the axial length that its concrete numerical value depends on yarn count and rotating cylinder, so every group of yarn count is along separately orbital motion.Usually, equidistant array may be more satisfactory, but equidistant be not its strict demand, as long as during stretching all parallel tracks and remaining on fully in this array, promptly, just do not have what problem as long as monofilament can both reach fully " orientation ".The axis of rotation of this rotating cylinder that just requires to stretch is parallel entirely surely, makes every yarn all pass through draw stage in the plane that intersects vertically with arbitrary rotating cylinder axis of rotation.Figure 1B has illustrated this point, and wherein yarn count S mainly is that the axis of rotation A of plane P and rotating cylinder C intersects vertically by the contact length defined between plane P and yarn S and the rotating cylinder at the friction track length EPL of rotating cylinder C.
As above summary, for purposes of the invention, main is, every yarn and parallel stretching rotating cylinder are (as a among Fig. 1, b, c, the CONTACT WITH FRICTION length of summation d) will be in 1000～6500 millimeters scope, preferably between 1500～4000 millimeters, especially between 2000～3000 millimeters, and this CONTACT WITH FRICTION length preferably accounts for 75～100% all accounting for major part (promptly more than 50%) at least on the rotating cylinders, the rotating cylinder sum is few, generally between 2～6.Also can use 3～5 rotating cylinders, but even ratio is more satisfactory.Though with 2 rotating cylinders also is possible, desired rotating cylinder diameter may be unrealistic; It is suitable and as shown in the figure desirable adopting 4 rotating cylinders.Wherein rotating cylinder 141,142, and 154,144 with equal fully a, b, c and the d part of whole CONTACT WITH FRICTION length allocation one-tenth.
Generally speaking, first rotating cylinder 141 will rotate with the lower peripheral speed of this last rotating cylinder 144, the difference of its peripheral speed will with require or desirable draw ratio is complementary.Each rotating cylinder all links with a drive unit (not shown), and is furnished with thermal control or heater, and therefore, each rotating cylinder all can remain on predetermined, constant fully a, surface temperature between 80～130 ℃.
In typical case, the peripheral speed of first rotating cylinder 141 or first group of rotating cylinder 141,142 is 600～1000 meters/minute, and the peripheral speed of second group of rotating cylinder 143,144 is 1200～2000 meters/minute or higher.Between the rotating cylinder 141,142 and the peripheral speed between rotating cylinder 143 and 144 give a spot of difference, such as differing 10%, may be favourable.Generally speaking, if " skidding " amount (being the speed of yarn speed less than the contact rotating cylinder) less than 20%, preferably is no more than 10%, therefore, " CONTACT WITH FRICTION " is that supposition exists.If can keep CONTACT WITH FRICTION, and be not precluded within the stretching drum surface and coat special coating, as pottery or glass coating, but concerning many purposes of the present invention, the drum surface of common stainless steel, network (as electroplating) can meet the demands.
In the ideal case, first circuit yarn controller 151 is located between first and second rotating cylinders, promptly is located at the starting end near draw stage, and the second circuit yarn controller 152 is located at the end near draw stage, promptly is located at the downstream of rotating cylinder 444.All can use a slide bar or sliding rod 153 at one or two circuit yarn controller, shown in Fig. 1 c.For the sake of simplicity, shown groove rod 152 only is used for three yarn road S-1, three grooves 156,157 of S-2 and S-3 and 158.For example, during operate as normal, every yarn all utilizes the suitable groove of common yarn checkout gear (not shown) by it, device starting or when sending broken yarn to again, and slide bar 153 enters the position of the 153b shown in the solid line among the figure from below.All arrange at all yarns according to the array of certain device use and certain yarn count, make them all pass through S-1b, s-2b, with the groove shown in the S-3b, this slide bar just withdraws from or in-position 153a(dotted line), and all yarns are directed to and along normal passage S-1a, S-2a and S-3a are automatically by their corresponding grooves.
When device shown in Figure 1 will be used for producing bulk yarn or texture (distortion) yarn, yarn count as some hot-air texture nozzles 164, and entered collection drum 163 by texture or wind 16, pulls out from this back warp help roll 17 then.Also can adopt more help roll 160,161 with yarn gatherer 164.
Fig. 2 explanation is used for the former combinations produce device of melt spinning and oriented polypropylene yarn.Obviously, owing to think former stretching device 24 rail mounted and forms and the axis of rotation of these two rollers is angle each other and arranges in the shape of a spiral by the roller of two minor diameters, best to combinations produce at a high speed, therefore, the axle of the many 22a～22d of needs.Generally speaking, each root axle needs two such or similar stretching devices with minor diameter rotating cylinder at least, under typical situation, diameter be 200 millimeters or littler, on the machine of these prior arts, might make many yarn counts reach parallel track.The enlarged drawing of its helical orbit stretching device is shown in Fig. 2 A.
As knowing and to find out from comparing with Fig. 3, major diameter rotating cylinder C has the array A as said 11 the yarn S embarking on journey of being arranged in parallel of the present invention, seldom several major diameter rotating cylinders have only been used, except having above-mentioned said other advantage, also can make many yarns simultaneously by a stretching device, and every axle of prior art or spindle unit all require one group of stretching device, and every axle and stretching device only produce one or have only seldom several yarns.
Fig. 4 and Fig. 4 A are graphic formula side view and the top views by apparatus of the present invention.Side view shows the parts identical with Fig. 1 basically, promptly through a pair of shaft portion 421 of spinning head 41 with extruder 40 UNICOMs, 422, to produce monofilament F, monofilament forms yarn S through set, and utilize a stretching device 44 that yarn S is stretched with the form of planar array A, stretching device 44 is made up of 4 diameter stretching rotating cylinders identical and 400 millimeters at least, and the yarn count that makes process " orientation " then is sent to coiler device 49 by texture (distortion) and wind 46 and through auxiliary roller 47.
Yet, as what can find out from Fig. 4 A top view, device shown in Figure 4 all is " Cheng Shuan's ", promptly an extruder 40 is joined a pair of spinning head 41,41a, a pair of twin shaft 421,422,421a, 422a, a pair of stretching device 44,44a, a pair of help roll 49,47a, and a pair of coiler device 49,49a so that as a continuous product production line, with the combinations produce method from a public extruder 40, produce 30 strands or the yarn of multiply (long filament) more uniquely with at least 2000 meters/minutes typical rate.
As mentioned above, the circuit yarn controller of Fig. 1 is in order to represent that for simplicity Fig. 4 does not illustrate it, in practicality, will use it certainly, so that provide best broken yarn control according to the present invention in multiply polypropylene yarn is at a high speed produced.
In a word, the present invention comprising makeing the yarn that fashionable dress is used, provides extremely effective and compact device for producing the high-quality poly-third roasting yarn economically.
Can carry out suitable modification to method and apparatus described here.Though introduced some ideal schemes in more detail, the present invention is not limited to these schemes, and can be applied in following claim.
Claims (12)
1, a kind of production method of polypropylene yarn, the method adopt melt spinning and stretching technique, produce with the combinations produce method, and the yarn of production is made up of the monofilament of many abundant orientations, and the characteristics of the method are,
(A) push the monofilament of sufficient amount simultaneously, to form at least 8 yarns, each yarn is made up of 10 monofilament at least, and with 400 meters/minute extrusion speed monofilament being clamp-oned one at least is vertical air quenched district basically, so that they are cured.
(B) according to the corresponding yarn count of step (A), silk is arranged to a complete planar array that yarn count is parallel to each other and spaced-apart.
(C) above-mentioned monofilament is stretched simultaneously; So that yarn count reaches abundant orientation; During stretching; Yarn remains in the above-mentioned planar array; And the circumferential section surface of the rotating cylinder that successively is parallel to each other by its rotating shaft; Every yarn is all along the surface portion of separately independent track by rotating cylinder; Its track is fully by limiting with the rotating cylinder plane that intersects vertically that parallels to the axis; Every yarn all with rotating cylinder circumferential surface CONTACT WITH FRICTION; Its contact length is between 1000～6500 millimeters; Rubbing of providing on 2～6 rotating cylinders altogether got rid of contact length and is at least 50% of above-mentioned contact length
Last speed with at least 1000 meters/minutes winds up the yarn count that is obtained as the finished product yarn.
2, method according to claim 1, wherein, the monofilament that forms in step (A) passes through a free vertical channel, this passage comprise air quenched district and from extruding point to the space length of first contact point of machinery-yarn guider, at least 2.5 meters of this clear passages are long, preferably are no more than 7.5 meters.
3, according to the described method of claim 1 or 2, wherein, keeping the surface temperature of substantially constant rising at the rotating cylinder of step (C), this temperature is preferably between 80～130 ℃.
4, according to any method of claim 1～3, wherein, all rotating cylinder will provide 75%～100% of above-mentioned contact length, and first group of rotating cylinder wherein rotates with the first common circle circular velocity, and second group of rotating cylinder then rotates with the second common circle circular velocity.
5, according to any method of claim 1～4, wherein, this contact track length preferably between 1500～3000 millimeters, provides the 75-100% of above-mentioned contact length on 4 rotating cylinders altogether between 1000～4000 millimeters.
6, according to the device of any method of implementing claim 1～5, include spinning head apparatus (11), spinning head has many holes (111,112), is used for spinning with the propen compounds of melt spinning method to fusion.Vertical axis device (12) is after being used for the polypropylene of fusion penetrated from spinning head it to be cooled off and solidify, to form many monofilament; Device (13) gets up these combination of monofilaments to form one multiple long filament (or being yarn count) at least; Stretching device (14) to the monofilament of one yarn count of major general fully is orientated, and also has coiler device (19),
It is characterized in that:
Spinning appts (11) has the hole (111,112) of sufficient amount, forms 8 yarns at least; Every yarn includes 10 monofilament at least, vertical axis device (12) has an enough length (H), so that for monofilament after spinning appts penetrates with before first mechanical monofilament-contact device contacts for the first time, provide a clear passage length, at least 2.5 meters of this clear passage length; Connect that to stretch device (14) be by several rotating cylinders (141,142,143 successively, 144) form, the gyroaxis of rotating cylinder is parallel fully, and rotating cylinder and yarn count have 1000～6500 millimeters CONTACT WITH FRICTION length, and is providing 50% above-mentioned contact length at least on 2～6 parallel rotating cylinders altogether.
7, device according to claim 6 also comprises texture (distortion) and the wind (16) that is configured in stretching device (14) downstream, and an additional roller set (17) will be delivered to coiler device (19) from the yarn count of texture or wind.
8, according in claim 6 or the 7 described devices, rotating cylinder (141,142,143,144) has 300 millimeters diameter at least, preferably is not less than 400 millimeters, and it also is included as the device that keeps drum surface to be in suitable stationary temperature.
9, according in the described device of claim 6-8 any one, comprise being used for making drive unit that first group of rotating cylinder (141,142) rotates with the first common circle circular velocity and that second group of rotating cylinder (143,144) rotated with the second common circle circular velocity.
10, according in the described device of claim 6-9 any one, the sum of rotating cylinder (14) is 4, the diameter of all rotating cylinders is identical.
11, according in the described device of claim 6-10 any one, be separated by at least half of this adjacent two rotating cylinder average diameters of any two adjacent rotating cylinders of stretching device (14).
12, according in the described device of claim 6-11 any one, the one the second circuit yarn controllers (151,152) initiating terminal and the end that is configured in the CONTACT WITH FRICTION length of approaching every yarn held, have at least a circuit yarn controller to include some and the corresponding parallel slot (156 of yarn count, 157,158), these grooves are arranged in the channel bar (152) of a lengthening, the slide bar (153) of elongation is used for yarn count (S-1, S-2, S-3) from these grooves, lift together, and together yarn count is sent into again, remove slide bar (153).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19990/87A IT1203862B (en) | 1987-04-06 | 1987-04-06 | CONTINUOUS SPINNING AND STRETCHING PROCESS OF SYNTHETIC YARNS AND RELATED PRODUCTION PLANT |
| IT19990A/87 | 1987-04-06 | ||
| EP87810568A EP0285736B1 (en) | 1987-04-06 | 1987-10-02 | Method of producing poly-propylene yarns and apparatus for carrying out the method |
| EP87810568.3 | 1987-10-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88102349A true CN88102349A (en) | 1988-10-26 |
| CN1009465B CN1009465B (en) | 1990-09-05 |
Family
ID=26112580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88102349 Expired CN1009465B (en) | 1987-04-06 | 1988-04-06 | Method of producing polypropylene yarns and apparatus for carrying out this method |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JP2619680B2 (en) |
| CN (1) | CN1009465B (en) |
| AT (1) | ATE83269T1 (en) |
| AU (1) | AU606669B2 (en) |
| BR (1) | BR8801592A (en) |
| CA (1) | CA1284567C (en) |
| IE (1) | IE61581B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224165A (en) * | 2009-12-11 | 2013-07-31 | 日本Tmt机械株式会社 | Spinning and winding facility |
| CN106488999A (en) * | 2014-07-08 | 2017-03-08 | 欧瑞康纺织有限及两合公司 | Method and apparatus for producing synthesis full-drawn yarn |
| CN107208316A (en) * | 2015-01-08 | 2017-09-26 | 欧瑞康纺织有限及两合公司 | For the method and apparatus for the fiber webs for stretching a large amount of melt-spuns |
| CN117904734A (en) * | 2024-03-15 | 2024-04-19 | 宿松县鑫晟辉织造有限公司 | Polyacrylonitrile fiber spinning machine |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69304522T2 (en) * | 1992-04-16 | 1997-01-23 | Advanced Energy Ind Inc | STABILIZER FOR SWITCHING MODE PROVIDED RADIO FREQUENCY PLASMA DEVICE |
| EP0663019B1 (en) * | 1992-09-30 | 1998-12-02 | Advanced Energy Industries, Inc. | Topographically precise thin film coating system |
| US6217717B1 (en) | 1992-12-30 | 2001-04-17 | Advanced Energy Industries, Inc. | Periodically clearing thin film plasma processing system |
| US5718813A (en) * | 1992-12-30 | 1998-02-17 | Advanced Energy Industries, Inc. | Enhanced reactive DC sputtering system |
| WO1996031899A1 (en) | 1995-04-07 | 1996-10-10 | Advanced Energy Industries, Inc. | Adjustable energy quantum thin film plasma processing system |
| US5576939A (en) * | 1995-05-05 | 1996-11-19 | Drummond; Geoffrey N. | Enhanced thin film DC plasma power supply |
| DE10355542A1 (en) * | 2003-11-27 | 2005-06-23 | Saurer Gmbh & Co. Kg | spinning plant |
| WO2015173175A1 (en) * | 2014-05-12 | 2015-11-19 | Borealis Ag | Polypropylene composition for producing a layer of a photovoltaic module |
| CN108570721A (en) * | 2018-06-25 | 2018-09-25 | 张家港市金星纺织有限公司 | A kind of preparation facilities of polypropylene fibre |
| CN111876867A (en) * | 2020-08-04 | 2020-11-03 | 安徽倍发来服饰有限公司 | Efficient sock spinning elasticizer and using method thereof |
| CN112501703A (en) * | 2020-11-27 | 2021-03-16 | 汪昕 | Production polypropylene yarn equipment |
| CN112853624B (en) * | 2020-12-30 | 2022-12-06 | 天鼎丰聚丙烯材料技术有限公司 | Special polypropylene filament needle-punched drainage geotextile for tunnel, preparation method and preparation system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1362793A (en) * | 1970-10-22 | 1974-08-07 | Ici Ltd | Process for drawing synthetic filaments |
-
1987
- 1987-10-02 AT AT87810568T patent/ATE83269T1/en not_active IP Right Cessation
-
1988
- 1988-03-28 IE IE92988A patent/IE61581B1/en not_active IP Right Cessation
- 1988-04-05 AU AU14172/88A patent/AU606669B2/en not_active Ceased
- 1988-04-05 BR BR8801592A patent/BR8801592A/en not_active IP Right Cessation
- 1988-04-05 CA CA000563264A patent/CA1284567C/en not_active Expired - Fee Related
- 1988-04-06 CN CN 88102349 patent/CN1009465B/en not_active Expired
- 1988-04-06 JP JP8621888A patent/JP2619680B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224165A (en) * | 2009-12-11 | 2013-07-31 | 日本Tmt机械株式会社 | Spinning and winding facility |
| CN103224165B (en) * | 2009-12-11 | 2016-04-20 | 日本Tmt机械株式会社 | Take-up winding facility |
| CN106488999A (en) * | 2014-07-08 | 2017-03-08 | 欧瑞康纺织有限及两合公司 | Method and apparatus for producing synthesis full-drawn yarn |
| CN107208316A (en) * | 2015-01-08 | 2017-09-26 | 欧瑞康纺织有限及两合公司 | For the method and apparatus for the fiber webs for stretching a large amount of melt-spuns |
| CN107208316B (en) * | 2015-01-08 | 2021-01-08 | 欧瑞康纺织有限及两合公司 | Method and device for drawing a mass of melt-spun fiber strands |
| CN117904734A (en) * | 2024-03-15 | 2024-04-19 | 宿松县鑫晟辉织造有限公司 | Polyacrylonitrile fiber spinning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2619680B2 (en) | 1997-06-11 |
| IE61581B1 (en) | 1994-11-16 |
| AU1417288A (en) | 1988-10-06 |
| ATE83269T1 (en) | 1992-12-15 |
| AU606669B2 (en) | 1991-02-14 |
| IE880929L (en) | 1988-10-06 |
| CN1009465B (en) | 1990-09-05 |
| JPS6414312A (en) | 1989-01-18 |
| BR8801592A (en) | 1988-11-08 |
| CA1284567C (en) | 1991-06-04 |
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