EP3325699B1 - Method and device for the production of a slub yarn, and yarn produced - Google Patents

Method and device for the production of a slub yarn, and yarn produced Download PDF

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Publication number
EP3325699B1
EP3325699B1 EP16739458.4A EP16739458A EP3325699B1 EP 3325699 B1 EP3325699 B1 EP 3325699B1 EP 16739458 A EP16739458 A EP 16739458A EP 3325699 B1 EP3325699 B1 EP 3325699B1
Authority
EP
European Patent Office
Prior art keywords
yarn
slubbing
unit
drafting
fancy
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.)
Active
Application number
EP16739458.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3325699A1 (en
Inventor
Davide Maccabruni
Antonio RIPAMONTI
Roberto BADI
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.)
SSM Giudici SRL
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SSM Giudici SRL
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Publication date
Application filed by SSM Giudici SRL filed Critical SSM Giudici SRL
Publication of EP3325699A1 publication Critical patent/EP3325699A1/en
Application granted granted Critical
Publication of EP3325699B1 publication Critical patent/EP3325699B1/en
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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
    • D02G1/162—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam with provision for imparting irregular effects to the yarn
    • 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
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/0266—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting false-twisting machines
    • 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
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/328—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic containing elastane
    • 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
    • D02G3/34—Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns

Definitions

  • the present invention relates to the field of yarn production. More in particular, embodiments described herein relate to improvements to the methods and devices for the production of slub yarns.
  • a previously texturized slub yarn is coupled with an elastomer yarn to obtain a composite fancy yarn.
  • the invention relates to a method for the production of a fancy yarn.
  • the method comprises the step of feeding and processing a first yarn by means of a drafting and false-twist texturing process.
  • the method furthermore comprises the step of feeding and processing a second yarn by means of a drafting and false-twist texturing process.
  • the drafted and textured first yarn is then fed to a first slubbing unit in order to form accumulation or slub areas on the first yarn.
  • the drafted and textured second yarn is fed to a second slubbing unit so as to form accumulation or slub areas on the second yarn.
  • first yarn, the second yarn and a core yarn are joined together so as to form the fancy yarn.
  • the joining of the three components is performed in a single joining device.
  • the joining device may be, or may comprise, an air interlacing jet.
  • the invention relates to a device for the production of a slub yarn, comprising in combination a first drafting and false-twist texturing unit to process a first yarn by means of drafting and false-twist texturing, and a second drafting and false-twist texturing unit to process a second yarn by means of drafting and false-twist texturing.
  • the device comprises, downstream of the drafting and false-twist texturing units, a first slubbing unit for the drafted and textured first yarn, and a second slubbing unit for the drafted and textured second yarn.
  • a joining device for joining the first yarn and the second yarn is provided downstream of the first slubbing unit and of the second slubbing unit, a core yarn being also fed to this device.
  • the invention relates to a fancy yarn comprising in combination a core yarn, a first drafted textured slub yarn, and a second drafted textured slub yarn joined together.
  • the reference to “an embodiment” or “the embodiment” or “some embodiments” means that a particular feature, structure or element described with reference to an embodiment is comprised in at least one embodiment of the described object.
  • the sentences “in an embodiment” or “in the embodiment” or “in some embodiments” in the description do not therefore necessarily refer to the same embodiment or embodiments.
  • the particular features, structures or elements can be furthermore combined in any adequate way in one or more embodiments.
  • Fig. 1 shows a functional diagram of some embodiments of the method described in the invention.
  • two initial yarns F1 and F2 are used.
  • the yarns F1 and F2 may be supplied in reels B1 and B2 that are gradually unwound to feed the yarns F1 and F2 to the processing unit of the device, indicated as a whole with number 1 in the diagram of Fig. 1 .
  • each yarn F1 and F2 is subjected to a preliminary drafting and false-twist texturing in a section 3 of the machine.
  • a first drafting and false-twist texturing unit, indicated with 2A, is provided for the first yarn F1 in the section 3.
  • a second drafting and false-twist texturing unit, indicated with 2B, is also provided for the yarn F2 in the section 3.
  • the first yarn F1 is fed through a first feeding unit 5, an oven or heater 7, a cooling area 9, a false-twist unit 11, and lastly through a second feeding unit 13.
  • the second yarn F2 may be fed through a respective first feeding unit 15, a second oven or heater 17, a second cooling area 19, a second false-twist unit 21, and is lastly introduced into a respective second feeding unit 23.
  • the two ovens 7 and 17 are integrated in a single heating unit, indicated as a whole with number 8.
  • the yarn F1 may be drafted between the feeding unit 5 and the feeding unit 13.
  • Each feeding unit 5 and 13 may comprise a pair of rollers adjacent to, and pressed against, each other, so as to define a nip for the passage of the yarn F1.
  • At least one of the rollers of each feeding unit 5, 13 may be motorized, while the other one may be idle.
  • the peripheral rotation speed of the rollers of the feeding units 5 and 13 is so selected as to impart the yarn F1 the desired drafting degree in the drafting and false-twist texturing section 3.
  • the feeding unit 13 may be actuated at a peripheral speed of the rollers that is greater than the speed of the feeding unit 5 by a percentage comprised between 1.1 and 2.0.
  • the yarn F2 may be drafted in the drafting and false-twist texturing section 3, between the feeding unit 15 and the feeding unit 23.
  • the feeding units 15 and 23 may be configured in a way similar to the units 5 and 13.
  • the motorized rollers of the feeding units 5 and 15 may be installed on a common shaft, controlled by a single motor.
  • the feeding units 5 and 15 may be associated to different motors, in order to impart the yarns F1 and F2 different drafting degrees.
  • the feeding units 13 and 23 may have motorized rollers installed on a same shaft and controlled by a single motor, or rollers actuated by different motors so as to adjust the drafting degree of the two yarns F1 and F2 independently of each other.
  • the device 1 Downstream of the drafting and false-twist texturing section 3, the device 1 has a first slubbing unit 25 arranged along the path of the first yarn F1, and a second slubbing unit 27 arranged along the path of the second yarn F2.
  • the two slubbing units 25 and 27 may be designed in a known manner, for example as described in the patent documents mentioned in the introductory part of this description. A further embodiment of a slubbing unit 25 or 27 will be described below with reference to figure 3 .
  • an unwinding station 29 may be provided for unwinding a reel BE of an elastomer yarn FE, destined to form the core yarn of the composite fancy yarn FF.
  • the elastomer yarn FE may be made, for example, of Lycra® or any other suitable material.
  • the joining device 31 comprises, or is constituted by, an air interlacing jet 31.
  • the yarns F1, F2 and the elastomer yarn FE are joined together by means of pressurized air jets, in order to obtain, at the exit of the air interlacing jet 31, the composite fancy yarn FF, that is wound in a reel BF in a collection and winding station, schematically indicated with 33, to which the fancy yarn FF is fed by means of a feeding unit 35 that may comprise, similarly to the units 5, 13, 15, 23, a pair of rollers adjacent to, and pressed against, each other, at least one of which may be motorized and the other one may be idle.
  • the peripheral speed of the rollers of the feeding unit 35 may be suitably controlled in order to further draft, or to relax, the fancy yarn FE before it is collected on the reel BF.
  • the feeding unit 35 may be replaced by a heated roller called godet roller. In this way, the unit has not only the function of feeding but also the function of thermosetting the fancy yarn FE.
  • an oil supplying unit 37 may be arranged along the path of the fancy yarn FE towards the collection reel BF.
  • the composite fancy yarn FE therefore comprises a core yarn constituted by the elastomer yarn FE, to which two slub yarns F1 and F2 are joined by means of the air interlacing jet 31.
  • the fancy yarns F1 and F2 are advantageously and preferably multi-filament yarns, with a number of filaments comprised, for instance, between 10 and 288.
  • the yarns F1 and F2 have a yarn count comprised between 15 and 550 Dtex.
  • the two yarns F1 and F2 may be equal to each other as regards yarn count and composition, or differ from each other in yarn count and/or composition.
  • the yarns F1 and F2 may be, independently of each other, POYs (pre-oriented or partially oriented yarns) or FDYs (fully drawn yarns).
  • the two yarns F1 and F2 may be made, independently of each other, of polyamide (nylon), polypropylene, polyester, polyethylenterephthalat or any other material, typically a polymer material, useful for the production of yarns destined to the textile industry, for clothing, furniture, automotive or any other textile applications.
  • Figs. 2A and 2B show an embodiment of a device according to the diagram of Fig. 1 .
  • the same numbers indicate equal or corresponding parts to those described with reference to figure 1 .
  • Figs. 2A and 2B illustrate a section according to a vertical plane, orthogonal to the longitudinal extension of a multiple machine comprising a plurality of devices 1 aligned to one another orthogonally to the plane of the figure.
  • the paths of the yarns F1 and f2 are partially overlapped in the image of Figs. 2A , 2B , in particular as regards the drafting and false-twist texturing section 3.
  • Figs. 2A , 2B the ovens 7, 17 joined in the heating unit 8, the cooling areas 9 and 19 and the false-twist units 11 and 21 are shown overlapped to one another. Downstream of these latter, the two paths of the yarns F1 and F2 are visible separately, with the feeding units 13, 23, the slubbing units 25 and 27, the single interlacing jet 31, common for the yarns F1, F2 and for the elastomer yarn FE, and the single feeding unit 35. Below this latter, two collection units 33 are indicated, put one over the other and corresponding to two adjacent devices 1 arranged according to the alignment of the machine, orthogonal to the plane of the figure.
  • the two slubbing units 25 and 27 may be designed in a known manner, for example as described in the patent documents mentioned in the introduction.
  • Fig. 3 illustrates a slubbing unit according to a further embodiment.
  • the slubbing unit 25, 27 comprises, for each device 1, i.e. for each position of the multi-position machine of Fig. 2 , a pair of guide members 41, 43 for the passage of the respective yarn F1 or F2.
  • the two guide members 41 and 43 are preferably fixed with respect to the structure of the device 1.
  • a thread guide 45 is arranged, movable with reciprocating motion according to double arrow f45.
  • the thread guide 45 may be connected to a toothed belt 47 that may be driven into reciprocating motion by means of a motor 49.
  • the thread guide 45 moves along a path, rectilinear in the illustrated example, from an initial position, shown in Fig. 3 , to a final position, where a slide 51 is arranged stationary with respect to the bearing structure,
  • the thread guide 45 in the position illustrated in Fig. 3 , engages the yarn F1 or F2, guided along the guide members 41 and 43, and moves it in its translation movement towards the position of the slide 51.
  • the yarn is unloaded from the thread guide 45 and returns into rectilinear arrangement between the two guide members 41 and 43.
  • the thread guide 45 moves back to the initial position of Fig. 3 , where it picks up the yarn again and deviates the path thereof, as described above, up to the slide 51.
  • the periodical elongation of the yarn path between the guide members 41 and 43 and the subsequent release of the yarn causes the formation of yarn accumulations, thus generating the slub effect.
  • Fig. 5 illustrates a different embodiment of a slubbing unit 25, 27.
  • the slubbing unit 25, 27 comprises, for each device 1, i.e. for each position of the multi-position machine of Fig. 2 , a pair of guide members 41, 43 for the passage of the respective yarn F1 or F2.
  • the two guide members 41 and 43 are preferably stationary with respect to the structure of the device 1.
  • a thread guide 45 is arranged, which is movable with reciprocating motion according to the double arrow f45.
  • the thread guide 45 may be connected to a toothed belt that can be driven into reciprocating motion by means of an electric motor, similarly to what has been described with reference to Fig. 3 .
  • the thread guide 45 is symmetrical with respect to a vertical plane and co-acts with two slides 51A, 51B, arranged at the ends of the stroke followed by the thread guide 45.
  • the operation of the slubbing unit is substantially the same as for the slubbing unit of Fig. 3 .
  • the thread guide 45 performs a greater stroke in the two directions according to the arrow f45, in order to co-act with the two opposite slides 51A and 51B, alternatively.
  • the texturized yarn passing through the slubbing unit is more tensioned and therefore more rigid, and this can lead to better final results.
  • Two identical or different slubbing units 25, 27 can be used in the device 1.
  • a slubbing unit may be made as shown in Fig. 3
  • the other slubbing unit may be made as shown in Fig. 5 .
  • the slubbing units 25, 27 may be controlled in a same manner or in different manners with respect to each other.
  • the two slubbing units may be operated at the same rate or at different rates of the motion of the thread guide 45 or of any other movable slubbing element.
  • a different final result on the fancy yarn may be also obtained by changing the yarns F1 and F2.
  • the yarns may be equal to each other or can be different from one another, for example as far as yarn count, number of filaments and/or material is concerned.
  • the yarns F1 and F2 may also differ in physical features imparted during the drafting and false-twist texturing process.
  • the two yarns F1 and F2 may be subjected to a different drafting percentage and/or to different texturizing temperatures and/or to different twist.
  • FIG. 6 shows a picture of a slub yarn obtained according to a prior art method, with a single texturized and slub yarn, joined to an elastomer yarn.
  • the fancy yarn thus obtained has a discontinuity in yarn accumulations, which are spaced from one another by areas without accumulation. The result is a limited yarn volume and poor quality.
  • Fig. 7 shows a picture of a fancy yarn FF obtained with the method described above.
  • the two yarns F1, F2, processed separately in the slubbing units 25, 27, interact with each other in the interlacing jet, thus creating a synergic slub effect on the finished yarn FF.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Forging (AREA)
EP16739458.4A 2015-07-20 2016-07-14 Method and device for the production of a slub yarn, and yarn produced Active EP3325699B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITUB2015A002307A ITUB20152307A1 (it) 2015-07-20 2015-07-20 Metodo e dispositivo per la produzione di un filo fiammato e filo cosi' ottenuto
PCT/EP2016/066834 WO2017012996A1 (en) 2015-07-20 2016-07-14 Method and device for the production of a slub yarn, and yarn produced

Publications (2)

Publication Number Publication Date
EP3325699A1 EP3325699A1 (en) 2018-05-30
EP3325699B1 true EP3325699B1 (en) 2019-05-22

Family

ID=54477098

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16739458.4A Active EP3325699B1 (en) 2015-07-20 2016-07-14 Method and device for the production of a slub yarn, and yarn produced

Country Status (6)

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EP (1) EP3325699B1 (ja)
JP (1) JP6915888B2 (ja)
CN (1) CN107849749B (ja)
IT (1) ITUB20152307A1 (ja)
TW (1) TWI699467B (ja)
WO (1) WO2017012996A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107354555B (zh) * 2017-09-06 2023-02-21 浙江凯成智能设备股份有限公司 一种变形丝机
TWI707072B (zh) * 2020-04-21 2020-10-11 佰龍機械廠股份有限公司 提供撚合節點比率非固定的紗線的針織機供紗組件、裝有前述針織機供紗組件的針織機、針織織物
CH717804A1 (de) * 2020-09-02 2022-03-15 Ssm Schaerer Schweiter Mettler Ag Verfahren und Vorrichtung zur Herstellung eines Effekt-Multikomponenten-Gams.
CN112522828B (zh) * 2020-12-29 2023-07-21 山东玉马遮阳科技股份有限公司 一种高分子单丝包覆竹节丝成型设备及成型方法
CN115478346A (zh) * 2021-06-15 2022-12-16 富源磁器股份有限公司 花色变化纱制造装置及其方法

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Also Published As

Publication number Publication date
JP2018521236A (ja) 2018-08-02
TW201712174A (zh) 2017-04-01
CN107849749B (zh) 2021-04-30
ITUB20152307A1 (it) 2017-01-20
TWI699467B (zh) 2020-07-21
JP6915888B2 (ja) 2021-08-04
CN107849749A (zh) 2018-03-27
EP3325699A1 (en) 2018-05-30
WO2017012996A1 (en) 2017-01-26

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