EP0696331A1 - Procede et dispositif de production d'un fil mixte et fil mixte ainsi realise - Google Patents

Procede et dispositif de production d'un fil mixte et fil mixte ainsi realise

Info

Publication number
EP0696331A1
EP0696331A1 EP95908868A EP95908868A EP0696331A1 EP 0696331 A1 EP0696331 A1 EP 0696331A1 EP 95908868 A EP95908868 A EP 95908868A EP 95908868 A EP95908868 A EP 95908868A EP 0696331 A1 EP0696331 A1 EP 0696331A1
Authority
EP
European Patent Office
Prior art keywords
yarn
staple fibers
air
suction
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95908868A
Other languages
German (de)
English (en)
Other versions
EP0696331B1 (fr
Inventor
Gotthilf Bertsch
Erwin Schwarz
Albert Rebsamen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Heberlein AG
Original Assignee
Heberlein Fasertechnologie AG
Heberlein and Co AG
Heberlein Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heberlein Fasertechnologie AG, Heberlein and Co AG, Heberlein Maschinenfabrik AG filed Critical Heberlein Fasertechnologie AG
Publication of EP0696331A1 publication Critical patent/EP0696331A1/fr
Application granted granted Critical
Publication of EP0696331B1 publication Critical patent/EP0696331B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/165—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam characterised by the use of certain filaments or yarns

Definitions

  • the invention relates to a method and a device for producing and finishing a mixed yarn in an air stream consisting of at least one continuous filament yarn and staple fibers, the air stream leading the continuous filament yarn.
  • the classic yarn which is made from natural fibers such as cotton or wool by spinning, gives the end product a typical textile character due to the properties of the raw materials and the spinning process. Since the introduction of the so-called artificial silk, many manufacturing processes for the yarn on the one hand, as well as for the treatment or refinement of the yarn on the other, have emerged. In particular, two ventilation technologies were able to establish themselves on the market for finishing filament yarns. Both techniques are based on endless filament yarns that have already been spun, be it from artificial or natural silk.
  • the air intermingling technique allows the production of multi-component yarns. For example, a combination of filament yarn and fiber yarn or two filament yarns.
  • the air entangling technique requires a filament yarn to "twist" the fiber yarn component.
  • Air-entangled multicomponent yarns are additionally refined for special applications. However, you are Mostly finished products for subsequent processing such as weaving, knitting, etc. With the air swirling technique, special properties and effects can be created that cannot be achieved by the spinning process.
  • the second air technology that was able to establish itself in industrial practice is the so-called air blast texturing.
  • the air-blast texturing allows a single continuous filament yarn to be treated or two (or more) continuous filament yarns to be combined into a multi-component yarn and finished.
  • Air bubble texturing started in the 1950s. This makes it possible to produce a so-called loop yarn from one or more smooth, endless filament yarns.
  • the core piece for the air blasting texturing is the air blasting texturing nozzle, which is shown larger in a simplified section in FIG. 3.
  • the feed speed (Vi) of the filament yarn to the air-texturing nozzle is higher than the run-off or take-off speed (V2).
  • V2 run-off or take-off speed
  • the corresponding longitudinal displacements between the filaments are triggered by the energy of the flowing air.
  • the loop formation causes an effective shortening of the yarn length.
  • the nozzle thus becomes a "yarn eater", i.e. Due to the higher inlet speed, more yarn is sped in than drawn off. However, the supposedly missing amount of yarn can be found in the form of loops and leads to an increase in the titer after the nozzle.
  • the loop formation is modeled in Figure 4.
  • a braiding point "F" is usually defined.
  • a deflector is very often arranged to deflect the already textured yarn immediately after it emerges from the texturing nozzle (FIG. 5).
  • the compressed air can be introduced into the thread channel in parallel (FIG. 5) or, as shown in FIG. 3, radially. It is possible, two or even Introduce more continuous filament yarns into the thread channel at the same time and form a textured yarn e.g. to combine so-called effect or volume yarns.
  • the thread channel in the lower section is designed as a compressed air injection channel (PK) and a subsequent nozzle channel (DBK).
  • PK compressed air injection channel
  • DBK subsequent nozzle channel
  • the compressed air is fed to the nozzle head at 5-15 bar, preferably 6-10 bar.
  • the high feed pressure has the result that, with a suitable design of the nozzle, in particular of the nozzle channel or.
  • Nozzle acceleration channel a supersonic flow is generated.
  • the most recognized expert opinion assumes that the success of the air blast texturing is based precisely on the exploitation of the phenomenon of supersonic flow, especially the known shock fronts or rapid sequence of compression and expansion of the air.
  • the supersonic phenomena are obtained even if one or more smooth filament yarns are passed through the nozzle duct.
  • Recent investigations have shown that even higher-frequency vibrations occur superimposed on the compression waves, which ultimately produce the loops on the filaments together with the alternating shock waves.
  • the filament yarns are preferably guided into the middle of the blowing stream with the thread channel.
  • the compact yarn is drawn off at right angles after it emerges from the nozzle in the area of the braiding point (F). It is assumed that the bundling coincides very precisely with a compression point of the air flow. For more than 20 years, this process has been used successfully worldwide for the production of various types of yarn.
  • mixed yarn means a multicomponent yarn made from continuous filament yarn and staple fibers.
  • the continuous filament yarn is usually made from synthetic fibers, optionally also from natural silk, the staple fibers can be natural products such as cotton, wool etc. or else staple fibers made of synthetic fibers.
  • mixed yarn is often also understood to mean a spun yarn made of various staple fibers (synthetic fibers and natural fibers). This yarn is referred to below as mixed yarn.
  • the object of the invention was now to produce a mixed yarn in an air stream which essentially has all the natural advantages possible from the combination of endless filament yarn and staple fibers and can be used in industrial practice, in particular a twist-free mixed yarn should also be able to be produced.
  • the method according to the invention is characterized in that a suction zone is formed with the air stream which guides the continuous filament yarn, through which the staple fibers prevent the Endlo ⁇ filament yarn are mixed and endless filament yarn with staple fibers as a blended yarn are air blast textured.
  • the filament yarn is passed through traditionally through an expanding nozzle acceleration channel of an air blowing texturing nozzle and opened;
  • Staple fibers are sucked into the open filament yarn by the air flow and mixed in by a metering device;
  • the air flow is converted into a shock wave flow, which forms loops on the filaments, which encompass and bind the staple fibers, whereupon
  • the textured blended yarn is drawn off approximately at right angles.
  • the filament yarn and the staple fibers are probably intertwined, but each take a completely different shape.
  • the loops formed on the filaments of the continuous filament yarn are initially radially outward bulges of the filaments.
  • the staple fibers are also grasped from the inside and also moved outwards into the bulge.
  • the staple fibers are taken along and integrated into the respective loop so as to be displaceable.
  • the staple fibers have the same binding effect as spinning, but without real twisting.
  • an annular gap for feeding the staple fibers is formed in a first section of the suction zone, the annular gap being arranged over the entire circumference or only over part of the circumference.
  • the annular gap is not so much used for a uniform introduction of the fibers over the entire circumference, but rather for a favorable influence on the air flow. Tests have shown that it is sufficient if the staple fibers are fed in only at one point or at individual points along the circumference.
  • the suction zone is preferably designed as a suction mixing chamber, in such a way that a free discharge cross section is formed in the direction of the air flow, and the essential part of the air blast texturing is carried out outside the suction mixing chamber.
  • the suction-mixing chamber is delimited to the rear and to the side in the manner of an enveloping bell and is designed to be completely open in the direction of flow and preferably merges directly into a free looping section. So far, the best product qualities could actually be achieved if the suction mixing chamber was open in the direction of flow and the loop formation and the braiding zone (braiding point F) were designed to be impact-free. However, short tests have shown that an impact body can also be used.
  • the textured mechanical yarn be drawn from the braiding point approximately at right angles to the air flow.
  • the staple fibers are advantageously fed into the suction mixing chamber on one side, preferably with a radial component, and the textured mixed yarn is drawn off from the braiding point, but in the opposite direction to the feed direction of the staple fibers.
  • the invention further relates to a device for producing a blended yarn from at least one continuous filament yarn and staple fibers and is characterized in that it has an air blowing texturing nozzle and a suction mixing head with a feed device for the staple fibers.
  • the suction mixing head is preferred at the outlet end of the air blowing texturing nozzle or after the nozzle acceleration channel arranged and has an opening in the transition area for feeding the staple fibers.
  • the suction mixing head also forms a free outflow cross-section, with a shut-off device advantageously being arranged on the side of the feed device for the staple fibers. This prevented a negative influence of the suction flow on the feed of the staple fibers. It was also possible to produce a textured blended yarn if the feed opening to the suction zone for the staple fibers was arranged between the compressed air injection duct and the nozzle / acceleration duct or if the feed opening to the suction zone for the staple fibers was designed as a radial bore at the end of the nozzle acceleration duct . In all cases, however, an improvement could be achieved if an annular channel was formed around the suction mixing head for the intake air.
  • the new invention further relates to a device for the industrial production of mixed yarn, consisting of at least one continuous filament yarn and staple fibers, with a large number of units arranged in parallel, consisting of delivery units, air blower nozzle and winding device with drive and control units, and is characterized in that Air blowing nozzles are designed as air blowing texturing nozzles combined with a suction mixing head for the feeding of staple fibers, each of which can be fed via a staple fiber delivery unit.
  • the staple fibers can either be taken from a flyer spool and fed to the suction mixing head after stretching, or they can be removed from a can and mixed in after appropriate dissolution.
  • the new invention in particular allows an entire machine to be designed so that it can be used either for the production of conventional textured filament yarns or blended yarns or multi-component yarns.
  • Test trials have shown that the device or machine itself can be operated in such a way that an endless filament, either alone or in addition, is sped into staple fibers in the suction / mech head become. It can already be seen that this variant permits a further expansion of the application or an enlargement of the product variety.
  • the new invention further relates to a blended yarn consisting of at least one continuous filament yarn and staple fibers and is characterized in that the blended yarn was produced in the air-blast texturing process as a twist-free loop yarn, the staple fibers being incorporated in the loops of the endless filaments so as to be non-displaceable are. All previous attempts have been based on the production of textured yarns with titers in the range of 50-1,000 dtex. According to the current state of knowledge, the area can easily be larger.
  • Figures 1 to 5 show different solutions for the air flow treatment and finishing of endless filament yarns in the prior art, which have been described in the introduction.
  • FIGS. 7, 8 and 9 each show a section through three different air texturing nozzles with a suction mixing head;
  • FIG. 10 shows a section of the device according to FIG. 8 on a larger scale;
  • FIG. 11 shows a micro section of one of the mixed yarns according to the invention;
  • FIG. 12 shows a comparison of the classic spinning process for a mixed yarn and the new air texturing process for the production of a mixed yarn according to the invention. Ways and implementation of the invention
  • the air-blowing machine shown in FIG. 6 is used to produce a mixed yarn from at least one (two or more) continuous filament yarn 1 and staple fibers 2.
  • the continuous filament yarn 1 is supplied from a filament feed unit 3 to an air-blowing texturing device 4 and passes through a continuous yarn channel in the same.
  • the staple fibers 2 are drawn off from a flyer spool 6 as a conveyor belt 8 via a fiber stretching device 5.
  • the fiber material can also be removed from a can 7 and fed to the air-blowing texturing device 4 via a corresponding opening device.
  • a withdrawal device 9 is arranged after the outlet end of the yarn channel. After the take-off device 9, the finished blended yarn 10 then runs to a take-up device 11.
  • the fiber drafting device 5 is preferably designed in such a way that the ends of the staple fibers lead close to the suction zone, at least until the beginning of the incorporation process of the tips in the Loops of endless filament yarn.
  • the continuous filament yarn 1 can be supplied with a liquid by means of a schematically indicated wetting device, arrow 12. This liquid, preferably water, then passes together with the filament yarn 1 into the yarn channel of the texturing device and supports the texturing process there.
  • the new air-blowing texturing machine 13 can be designed in a similar way to the known air-blowing machines with a large number of production units over the entire length of the machine, which is not shown, and which stands on the floor 15 via stands 14.
  • the same air-texturing device 4 to refine the previously known loop yarn from one or more endless filaments or to produce new mix yarn.
  • the type of end product only decides whether staple fibers are additionally fed or not, or whether the fiber drafting device 5 is put into operation or not. to Simplification is shown only a single fiber delivery plant.
  • two or more fiber supply units can also be assigned to an air blowing texturing device 4. All delivery plants are designed so that the respective feed speed can be selected and regulated, e.g. with the known variable speed drives.
  • the entire system is managed and monitored by a computer 16. In this way, the optimal operating conditions can be set, monitored and regulated in each case, in particular the optimum feed and take-off speeds.
  • FIG. 7 shows a schematic longitudinal section of the core elements of a first embodiment of the air-blowing texturing device 4.
  • three bodies 21, 22 and 23 are held in abutting manner in a cylindrical sleeve 20, and have axial bores 24 or 25 and 26 respectively.
  • the bores 24, 25 and 26 are aligned coaxially with one another and together form a continuous yarn channel, for example. for the passage of Endlo ⁇ multifilament yarn 1 and la ( Figure 9).
  • the yarn channel is essentially divided into three sections, a first conically narrowing insertion section 24, a guide bush 19 which has a constriction in the sense of a needle eye, and an adjoining nozzle section, in the middle part of which the bore 26 is located.
  • the main parts of the nozzle section are a feed point 18 for the continuous filament yarn into the high-pressure air stream and a nozzle acceleration channel 17.
  • a nozzle ring gap 27 is formed through which compressed air is introduced laterally into the yarn channel.
  • the compressed air preferably 6-10 bar is introduced from a source (not shown) via a chamber 28 and one or more bores 29 in the body 21 into an annular space which is present above the annular gap 27.
  • the compressed air blowing flow generates a supersonic flow in the nozzle acceleration channel 17.
  • a second annular gap 30 opens into the bore 26 of the yarn channel at a point that serves as a suction zone is formed and lies in the running direction of the continuous filament yarn 1 after the nozzle annular gap 27.
  • the suction zone lies between the annular gap 27 and the bore 26 and is generated by the air stream which is blown downwards out of the nozzle annular gap 27 through the bore 26.
  • the underpressure arises from the fact that the cross-sectional area in the area of the annular gap 30 is larger than the cross-sectional area of the bore 25.
  • the staple fibers are introduced through a bore 32 in the sleeve 20 and in the body 23 into an annular space above the annular gap 30, which is recessed between the body 22 and the body 23.
  • the outlet end or mouthpiece of the nozzle acceleration channel is designated by 31.
  • FIG. 8 shows a schematic longitudinal section of an air texturing nozzle of a second, more preferred embodiment of the air-blowing texturing device 4.
  • Two bodies 41 and 42 with axial bores 44 and 45 are arranged abutting one another in a cylindrical sleeve 40.
  • a third body, designed as a suction mixing head 51, is attached to the sleeve 40.
  • the suction mixing head 51 has a plate 43 which extends across the lower end of the body 42.
  • the plate 43 is arranged at a small distance from this lower end and thus forms an annular gap 50.
  • the plate 43 contains a conical bore 46 which forms a suction zone.
  • the bores 44 and 45 are aligned approximately coaxially with one another and together form a continuous yarn channel for the passage of the continuous filament yarn 1.
  • a driver nozzle 47 is formed by an annular gap, through which compressed air is introduced into the yarn channel 45 .
  • the compressed air is introduced from a source, not shown, via a chamber 48 and one or more bores 49 in the body 41 into the annular space 48 '.
  • a high-pressure air jet is directed through the introducing point 18 into the bore 45 through the driver nozzle 47.
  • a suction ring gap 50 and an annular channel 52 are formed which open into the conical bore 46.
  • FIG. 9 shows a longitudinal section through the core element of a third embodiment of the air-blowing texturing device 4.
  • a body 61 contains a longitudinal bore 64 which opens in a lower end section towards an outlet end 71.
  • the continuous filament yarn 1 and possibly further endless filaments la etc. run into the longitudinal bore or the yarn channel 64 laterally, at an acute angle to the direction of movement of the yarn 1, an air supply bore 67 through which Compressed air is introduced into the yarn channel 64.
  • an air supply bore 67 through which Compressed air is introduced into the yarn channel 64.
  • the compressed air is supplied to the air supply bore 67 or the air supply bores from a source, not shown.
  • a fiber feed bore 70 opens laterally into the yarn channel. It is the point where there is a negative pressure in the air flow blown downward from the air supply bore 67 in the yarn channel 64, because the flow cross-section for the air flow to the outlet end 71 is expanded in a trumpet shape. Staple fibers 2 are introduced through the fiber feed bore 70. Only one fiber feed bore 70 is shown; However, as in the other examples shown, two or more such feed bores 70 could also open laterally into the yarn channel 64, in which case different staple fibers or possibly filaments can then be fed through each of these bores. The texturing takes place in the area of the outlet end 71 and below.
  • FIG. 10 The texturing process being shown graphically.
  • the Düsenab ⁇ cut the figure 10 corresponds to the solution according to Figure 8. It has been shown that an important first point is a clean design of the inward transfer 18 for the endless filament yarn.
  • the main task here is to bring the high-pressure jet together with the endless filament 1 into the bore 45 from the driver nozzle 47 in such a way that the maximum possible energy of the compressed air is retained. In the operating state, an overpressure is established in the insertion point 18 of the texturing nozzle.
  • the second important point is the design of the nozzle acceleration channel 17 (DBK). An uncontrollable intermingling must not occur in the nozzle acceleration channel, but an ultrasound flow must be generated by which the endless filament yarn is opened.
  • DBK nozzle acceleration channel 17
  • a suction zone U is formed in the suction mixing head 43.
  • the length dimension 53 of the protected suction mixing zone U can be relatively small.
  • the actual length of the suction mixing zone (AM) is effectively longer than the part protected by the conical bore 46.
  • the loop formation zone is marked with SB and the braid zone is marked with FZ.
  • the yarn 10 is drawn off at right angles to the left, as is also designated with two arrows as textured yarn (TMG) is.
  • a shut-off device 54 protects the fiber feed from a disturbing air flow from the suction effect of the shock wave flow.
  • the staple fibers 2 are fed in as a conveyor belt 8 'in accordance with FIG.
  • a microscopic section according to FIG. 11 shows a section of a textured mixed yarn (10). A large number of filaments 101 can be seen which bind in the individual fibers 100.
  • Figure 12 is a comparison of the overall processes, from the raw material to the finished product. On the one hand, the path from the original fiber to the finished spun yarn, and on the other hand, the path from the endless filament and the staple fiber to the mixed yarn according to the invention.

Abstract

L'invention concerne la production d'un fil mixte à deux composants: un fil continu et des fibres discontinues. Le fil mixte est réalisé à l'aide d'un procédé de texturation par inclusion d'air. Les fibres discontinues sont enliées dans le fil de manière à rester fixes, grâce aux boucles produites sur les fils continus pendant la texturation. La formation d'une zone d'aspiration de l'air, directement avant que la texturation à proprement parler ne débute, permet d'aspirer les fibres discontinues qui sont mêlées à l'âme du fil et y sont ancrées solidement par les boucles. L'invention concerne un nouveau procédé de production et un dispositif, par ex. une machine complète, permettant de produire au choix non seulement la bouclette, mais aussi le nouveau fil mixte.
EP95908868A 1994-03-01 1995-02-28 Procede et dispositif de production d'un fil mixte Expired - Lifetime EP0696331B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH60094 1994-03-01
CH600/94 1994-03-01
PCT/CH1995/000046 WO1995023886A1 (fr) 1994-03-01 1995-02-28 Procede et dispositif de production d'un fil mixte et fil mixte ainsi realise

Publications (2)

Publication Number Publication Date
EP0696331A1 true EP0696331A1 (fr) 1996-02-14
EP0696331B1 EP0696331B1 (fr) 1998-08-26

Family

ID=4190745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95908868A Expired - Lifetime EP0696331B1 (fr) 1994-03-01 1995-02-28 Procede et dispositif de production d'un fil mixte

Country Status (10)

Country Link
US (1) US5640745A (fr)
EP (1) EP0696331B1 (fr)
JP (1) JPH08510019A (fr)
KR (1) KR960702022A (fr)
CN (1) CN1041759C (fr)
DE (2) DE19580019C1 (fr)
GB (1) GB2287256B (fr)
RU (1) RU2119979C1 (fr)
TW (1) TW317578B (fr)
WO (1) WO1995023886A1 (fr)

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JP5981569B2 (ja) * 2012-02-20 2016-08-31 テイジン・アラミド・ビー．ブイ． 糸を交絡させるための方法および装置
BG111170A (bg) * 2012-03-19 2013-09-30 "Д-А-ДИНКО БАХОВ" ЕТ"D-A-Dinko Bahov" Et Метод и устройство за изпридане на прежда с въздушен вихър
JP6028786B2 (ja) * 2014-06-30 2016-11-16 株式会社Ｅ．Ｗ．Ｊａｐａｎ 羽毛状綿素材及びその製造方法
US9932693B2 (en) 2016-04-25 2018-04-03 Ronak Rajendra Gupta Method for manufacturing a multi-ply separable filament yarns and multi-ply separable textured yarn
IN201621014375A (fr) 2016-04-25 2016-12-30
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CN116815375B (zh) * 2023-08-28 2023-11-24 常州虹纬纺织有限公司 一种竹节纱生产系统及其工作方法
CN117552143B (zh) * 2024-01-12 2024-04-02 江苏欣战江纤维科技股份有限公司 一种空气变形丝机

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Also Published As

Publication number Publication date
CN1041759C (zh) 1999-01-20
DE19580019C1 (de) 1996-09-19
KR960702022A (ko) 1996-03-28
CN1124045A (zh) 1996-06-05
GB9504044D0 (en) 1995-04-19
GB2287256A (en) 1995-09-13
JPH08510019A (ja) 1996-10-22
US5640745A (en) 1997-06-24
RU2119979C1 (ru) 1998-10-10
GB2287256B (en) 1996-04-10
TW317578B (fr) 1997-10-11
WO1995023886A1 (fr) 1995-09-08
DE19580019D2 (de) 1996-01-25
EP0696331B1 (fr) 1998-08-26

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