US20200173062A1 - Air spinning method for the production of large yarns with count lower than ne20 and relative yarn - Google Patents

Air spinning method for the production of large yarns with count lower than ne20 and relative yarn Download PDF

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Publication number
US20200173062A1
US20200173062A1 US16/699,342 US201916699342A US2020173062A1 US 20200173062 A1 US20200173062 A1 US 20200173062A1 US 201916699342 A US201916699342 A US 201916699342A US 2020173062 A1 US2020173062 A1 US 2020173062A1
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United States
Prior art keywords
yarn
spinning
fibres
fibers
air
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.)
Abandoned
Application number
US16/699,342
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English (en)
Inventor
Fabio D'Agnolo
Luca DEOTTO
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.)
Savio Macchine Tessili SpA
Original Assignee
Savio Macchine Tessili SpA
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Filing date
Publication date
Application filed by Savio Macchine Tessili SpA filed Critical Savio Macchine Tessili SpA
Publication of US20200173062A1 publication Critical patent/US20200173062A1/en
Abandoned legal-status Critical Current

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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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D01H1/115—Spinning by false-twisting using pneumatic means
    • 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
    • D02G1/168—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam including drawing or stretching on the same machine
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/11—Spinning by false-twisting
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/02—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by a fluid, e.g. air vortex
    • 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
    • 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
    • D02G3/36—Cored or coated yarns or threads
    • 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
    • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn

Definitions

  • the present invention relates to an air spinning method for the production of yarns with a count lower than or equal to Ne20 and greater than or equal to Ne10, and a relative yarn obtained with said method.
  • the yarns that are normally processed on air-spinning machines are PES, Viscose (and its modal, tencel variants, etc.), cotton and the various compounds.
  • first formula can be used in the case of artificial fibers, the second for cotton.
  • FIG. 1 shows a schematic view of an air spinning device for implementing a spinning method according to an embodiment of the present invention
  • FIGS. 2 a , 2 b , 2 c show a view, with increasing magnifications, of a yarn made with air spinning, of the prior art
  • FIGS. 3 a -3 b show schematic sectional views of two yarns obtained according to the method of the present invention and according to the teachings of the prior art, respectively.
  • reference numeral 4 indicates a yarn, in particular obtained by means of an air spinning, preferably with multiple feeding.
  • the present invention finds application in particular in the use on man-made/synthetic fibers and possibly fibers mixed with cotton, but not 100% cotton.
  • the yarn 4 comprises a plurality of threads 8 each comprising a plurality of fibers 12 .
  • a plurality of fibers 12 can be seen which can be divided into external fibers 16 and internal fibers 20 .
  • the internal fibers 20 are those which constitute the core of the thread 8 in turn surrounded by the external fibers 16 .
  • the present invention provides to obtain yarns 4 with an overall number of fibers 12 lower than a maximum value, preferably equal to 200.
  • the optimum is to have a number of fibers 12 sufficient to give substance to the thread 8 but not too high to worsen its technical features.
  • a yarn Pes 100% of count Ne20 produced with air spinning machines, has a fiber length of 38 mm and a section of 1.3 dtex and contains about 227 fibers.
  • the solution of the present invention provides instead to maintain the fibers 12 under 200 units (maximum value) and the reason is shown in FIGS. 3 a , 3 b.
  • a yarn with a count Ne20 is ideally represented, made with 1.5 dtex fibers ( FIG. 3 a ) and 1.0 dtex fibers ( FIG. 3 b ). It is clearly seen that in the first case ( FIG. 3 a ), having fibers of an average greater diameter, the number of external fibers 16 or twisted, which are wound, with respect to the internal ones 20 which remain neutral, is much higher than in the second case ( FIG. 3 b ), where the individual fibers 12 (whether they are external fibers 16 or internal fibers 20 ) have a lower average diameter.
  • the present invention ( FIG. 3 a ), as the counts decrease, provides to increase the section of the fibers 12 used and therefore reduce the total number thereof, to a maximum value preferably equal to 200.
  • the air spinning method provides the steps of preparing at least one web of textile fibers N 1 , to be fed by at least one introducer element 24 upstream of an air spinning device 28 .
  • the web N 1 is previously drawn with at least one drawing device 32 , and then, after drawing, said web N 1 is fed into a spinning chamber 36 of an air spinning device 40 .
  • the fibers 12 are spun by means of jets of compressed air, so as to obtain a yarn F comprising internal fibers 20 surrounded by external fibers 16 , in which the yarn has an overall count lower than or equal to Ne20 and greater than or equal to Ne10, and in which the total number of internal and external fibers is less than 200.
  • the working pressures i.e. the jets of compressed air inside the spinning chamber 36
  • the working pressures are preferably between 0.45 and 0.6 MPa, i.e. between 4.5 and 6 bar.
  • the working speeds of the compressed air leaving the relative nozzles are comprised between 400 m/min and 500 m/min.
  • the air-jet spinning method according to the invention allows the drawbacks of the prior art to be overcome.
  • the present invention allows obtaining, by means of air spinning, yarns with a count lower than or equal to Ne20 and greater than or equal to Ne10. These yarns have features of resistance and elasticity which are superior to the solutions obtainable with the methods of the prior art.
  • this aspect determines the improvement of the mechanical features of the yarn obtained.
  • the section increase becomes extremely useful in synthetic fibers where the value of the elongation at break increases with the increase in the section of the fibers: therefore more resistance and more elasticity are obtained and, consequently, even greater quality and workability of the same yarn.
  • the present invention goes against the known and consolidated idea in the art of increasing the number of fibers in yarns in order to improve the strength and elasticity of the yarn produced.
  • the present invention teaches exactly the opposite, namely to decrease the number of fibers in the yarns, increasing their average size, in order to improve their mechanical and workability features. Such teaching finds advantageous application in the air-jet spinning sector.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
US16/699,342 2018-12-03 2019-11-29 Air spinning method for the production of large yarns with count lower than ne20 and relative yarn Abandoned US20200173062A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102018000010751 2018-12-03
IT102018000010751A IT201800010751A1 (it) 2018-12-03 2018-12-03 METODO DI FILATURA AD ARIA PER LA PRODUZIONE DI FILATI GROSSI CON TITOLO INFERIORE A Ne20 E RELATIVO FILATO

Publications (1)

Publication Number Publication Date
US20200173062A1 true US20200173062A1 (en) 2020-06-04

Family

ID=65767192

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/699,342 Abandoned US20200173062A1 (en) 2018-12-03 2019-11-29 Air spinning method for the production of large yarns with count lower than ne20 and relative yarn

Country Status (4)

Country Link
US (1) US20200173062A1 (it)
EP (1) EP3663444A1 (it)
CN (1) CN111254528B (it)
IT (1) IT201800010751A1 (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11359309B2 (en) 2018-12-21 2022-06-14 Target Brands, Inc. Ring spun yarn and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188892A (en) * 1986-10-31 1993-02-23 E. I. Du Pont De Nemours And Company Spun textile yarns
US6250060B1 (en) * 1997-04-18 2001-06-26 Wellman, Inc. Method of producing improved knit fabrics from blended fibers
US6146759A (en) * 1999-09-28 2000-11-14 Land Fabric Corporation Fire resistant corespun yarn and fabric comprising same
CN101294319B (zh) * 2008-05-26 2010-06-02 东华大学 低落纤的喷气涡流纺装置
CH709749A1 (de) * 2014-06-12 2015-12-15 Rieter Ag Maschf Luftspinnmaschine sowie Verfahren zum Betrieb einer solchen.
JP2018090923A (ja) * 2016-12-01 2018-06-14 村田機械株式会社 紡績機及び紡績方法
CN106702554B (zh) * 2017-02-28 2019-01-25 江南大学 一种带有用于减少毛羽的给湿装置的环锭纺纱机

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CN111254528A (zh) 2020-06-09
EP3663444A1 (en) 2020-06-10
IT201800010751A1 (it) 2020-06-03
CN111254528B (zh) 2023-07-11

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