EP4012083A1 - Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air - Google Patents

Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air Download PDF

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Publication number
EP4012083A1
EP4012083A1 EP20212766.8A EP20212766A EP4012083A1 EP 4012083 A1 EP4012083 A1 EP 4012083A1 EP 20212766 A EP20212766 A EP 20212766A EP 4012083 A1 EP4012083 A1 EP 4012083A1
Authority
EP
European Patent Office
Prior art keywords
spinning
air
stick coating
yarn
fiber
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.)
Withdrawn
Application number
EP20212766.8A
Other languages
German (de)
English (en)
Inventor
Jochen Dressen
Karoline Günther
Chandrassekaran Seshayer
Ralf Siewert
Thomas Weide
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.)
Saurer Intelligent Technology AG
Original Assignee
Saurer Intelligent Technology 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 Saurer Intelligent Technology AG filed Critical Saurer Intelligent Technology AG
Priority to EP20212766.8A priority Critical patent/EP4012083A1/fr
Priority to JP2023534992A priority patent/JP2023552581A/ja
Priority to CN202180082455.0A priority patent/CN116601347A/zh
Priority to US18/256,460 priority patent/US20240026577A1/en
Priority to MX2023006838A priority patent/MX2023006838A/es
Priority to PCT/EP2021/082728 priority patent/WO2022122376A1/fr
Publication of EP4012083A1 publication Critical patent/EP4012083A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
    • 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
    • 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

Definitions

  • the invention relates to a spinning element of an air spinning nozzle for an air spinning machine for producing a yarn from a sliver by means of an air stream and an air spinning nozzle with a spinning element air spinning nozzle.
  • a sliver In air spinning, a sliver is generally fed to an air spinning nozzle via a drafting system and the outer fibers of the sliver are wound around an internal fiber core in the area of an inlet opening of the air spinning nozzle within a whirling chamber of the air spinning nozzle by means of a turbulent air flow generated by air nozzles, which ultimately gives the desired strength of the yarn crucial wrapping fibers are formed.
  • this can be done with fibers made of different materials, whereby both natural fibers such as cotton and synthetic fibers such as polyester as well as mixtures of natural and synthetic fibers can be used.
  • the use of the additive also has a number of disadvantages.
  • the use of the additive leads to an increase in production costs and, on the other hand, the additive remains on the air-spun yarn and may have to be removed before further processing of the yarn.
  • the use of additives due to the use of additives, corresponding components of the air-jet spinning machine have to be cleaned regularly in order to remove excess additive deposited on the components.
  • the invention is therefore based on the object of providing a spinning element of an air spinning nozzle for an air spinning machine and a corresponding air spinning nozzle with a spinning element, which enables particularly cost-effective, low-maintenance and simple operation of a work station on the air spinning machine, without the quality and strength of the air-spun yarn being impaired and with no need for frequent cleaning of the components of the air-jet spinning machine and the air-spun yarn.
  • the spinning element according to the invention of an air spinning nozzle for an air spinning machine for producing a thread or a yarn from a sliver by means of an air stream has at least one fiber and/or thread-guiding surface, with a non-stick coating being located at least in sections on the fiber and/or thread-guiding surface .
  • the air spinning nozzle according to the invention has at least one spinning element according to the invention arranged inside the air spinning nozzle, it also being possible in particular for several and/or different spinning elements according to the invention to be arranged in and/or on the air spinning nozzle.
  • the inventors have recognized that the effect of an additive can also be achieved by a permanent non-stick coating of at least part of the air spinning nozzle or at least a section of a spinning element of an air spinning nozzle and that an additive can then advantageously be dispensed with, so that the air spinning process is significantly simpler, more cost-effective and can be operated with a lower cleaning requirement.
  • the non-stick coating advantageously leads to a reduction in air consumption, since the same spinning result can be achieved with a lower air pressure. A larger twisted fiber angle that can be achieved also easily results in a higher one Yarn strength reached.
  • the non-stick coating allows an increase in production speed.
  • An air-jet spinning machine is first understood to be any spinning machine which, by means of at least one air stream, swirls fibers, in particular fibers wrapped around an internal fiber core, to form a thread or yarn.
  • the process of yarn formation takes place in the area of an air spinning nozzle, which is formed from one or more spinning elements.
  • An air-jet spinning machine preferably has at least one work station or spinning station comprising an air-jet spinning nozzle, each spinning station serving to produce a yarn from a sliver fed to the air-spinning nozzle.
  • the air spinning nozzle has an inlet for the sliver, an internal vortex chamber, one or more yarn forming or spinning elements arranged at least in sections in the vortex chamber, and an outlet for the yarn produced inside the vortex chamber.
  • the air spinning nozzle preferably has a plurality of air nozzles opening into the turbulence chamber, which are particularly preferably in fluid connection with at least one air supply line, with compressed air provided by the air supply line during operation of the air spinning machine flowing into the turbulence chamber via the air nozzles in order to create a turbulence air flow within the turbulence chamber To produce air spinning the sliver into a yarn.
  • a yarn or thread within the meaning of the present invention is a fiber structure in which at least some of the fibers are wound around an internal fiber core.
  • a yarn can also be a roving for further processing, for example by means of a ring spinning machine.
  • the sliver and thus the yarn produced from it is preferably formed at least partially, particularly preferably completely, from synthetic fibers or man-made fibers, for example from polyester.
  • a spinning element can be an independent component, a section of a structural unit, or a functional unit that is preferably directly involved in the air-jet spinning process.
  • the spinning element can be formed in one piece or in several pieces.
  • the spinning element is part of an air spinneret or an air spinneret.
  • the spinning element preferably comes into direct contact with the at least in sections during the air spinning process fibers being spun and/or with the yarn being spun.
  • the spinning element can in particular be a component of a turbulence chamber and thereby form the inner wall of the turbulence chamber at least in sections.
  • the spinning element can also be a part of a spinning cone and thereby both a part of its outer surface and/or at least a part of a discharge channel inside the spinning cone.
  • the spinning element has at least one fiber and/or thread-guiding surface.
  • the fiber and/or thread-guiding surface is initially any surface of the spinning element that can come into contact with the unspun fiber material and/or the fiber material already spun into a yarn before, during or after the air-jet spinning process.
  • the fiber and/or thread-guiding surface is preferably arranged entirely within the air-spinning nozzle.
  • the fiber and/or thread-guiding surface is particularly preferably arranged at least in sections and very particularly preferably completely inside the turbulence chamber of the air spinning nozzle, inside which the unspun fibers are turbulent to form the yarn.
  • the fiber sliver is basically the fiber material fed to the air spinning process, which is preferably provided as a coherent tape or composite of fibers to be spun. All the fibers can be formed from the same material or the sliver can contain fibers that are chemically different from one another. In principle, however, the fibers in the sliver are not yet spun together.
  • the non-stick coating is basically a coating on a surface to reduce the static and/or sliding friction between the coated surface or the surface of the coating and the yarn or the individual fibers.
  • the non-stick coating preferably has a continuous and/or closed surface. Furthermore, the surface of the non-stick coating is preferably smooth.
  • the non-stick coating can be formed from any desired material, with the non-stick coating preferably being formed from at least one polymer. More preferably, the non-stick coating comprises a thermoplastic polymer, and most preferably, the non-stick coating consists essentially of formed from a thermoplastic polymer.
  • the non-stick coating preferably also makes the surface hydrophobic and/or oleophobic, so that adhesion of water- and/or oil-soluble substances is prevented.
  • the non-stick coating preferably also has an antistatic effect, so that the coated surface and the fibers to be spun or the air-spun yarn are not charged due to the friction on the surface of the spinning element, which could lead to a deterioration in the spinning result.
  • the non-stick coating can also be applied in any way.
  • the non-stick coating can be sprayed and/or melted onto the surface of the spinning element.
  • the material of the non-stick coating is particularly preferably applied as a powder or dispersion to the surface to be coated and then particularly preferably fused with or onto it.
  • the non-stick layer can also adhere to the surface of the spinning element by chemical bonding and/or purely physically.
  • a binder and/or an adhesive can be used for this purpose.
  • At least a section of a fiber and/or thread-guiding surface is coated with the non-stick coating.
  • several non-contiguous sections of a fiber and/or thread-guiding surface can each have a non-stick coating.
  • several components of the air spinning nozzle can have a non-stick coating in sections, preferably on the entire inner surface in the turbulence chamber.
  • a preferred embodiment of the spinning element according to the invention provides that the non-stick coating has a lower coefficient of friction than the underlying material of the spinning element, which advantageously prevents fibers and/or additives located on the fibers or on the yarn from sticking on the one hand and on the other hand better sliding of the fibers on the surface of the spinning element is achieved.
  • a spinning cone as a surface-coated spinning element can advantageously a higher speed fibers can be achieved on the spinning cone.
  • the surface of the non-stick coating preferably has a coefficient of friction that is at least 10%, particularly preferably 25% and very particularly preferably 50% lower than the material of the spinning element, particularly in the area below the non-stick coating.
  • the coefficient of friction of the fiber and/or thread-guiding surface with the non-stick coating is less than 0.4, preferably less than 0 .35, particularly preferably less than 0.3.
  • the non-stick coating is made of a fluorinated hydrocarbon or a fluorinated hydrocarbon polymer, in particular polytetrafluoroethylene (Teflon, PTFE) and/or a perfluoroalkoxyalkane polymer or a perfluoroalkoxy polymer (PFA) and/or a fluoroethylene-propylene -Polymer or a tetrafluoroethylene-hexafluoropropylene copolymer (FEP) formed.
  • the non-stick coating preferably has a proportion of PTFE, FEP and/or PFA of more than 50% and is particularly preferably made up of at least 90%.
  • the non-stick coating can also contain other polymers and/or auxiliaries, but preferably not more than 5% based on the total mass of the non-stick coating applied.
  • the non-stick coating preferably has PTFE as its main component and is particularly preferably formed essentially from it, since PTFE typically has a coefficient of friction of about 0.25 and a coefficient of friction ⁇ 0.05.
  • the mechanically slightly softer PFA usually has a slightly lower coefficient of friction of around 0.2 - 0.25 and FRP has a higher strength than PFTE, but also a slightly higher coefficient of friction.
  • the fiber and/or thread-guiding surface is at least a surface section of a spinning cone and/or a needle and/or a pair of tweezers of an air spinning nozzle, which makes it easy to avoid deposits of fibers, lubricants and/or polymers .
  • the spinning element is particularly preferably a spinning cone and/or a needle and/or tweezers of an air spinning nozzle.
  • the entire fiber and/or thread guiding is also preferred Surface or the entire surface of the spinning cone and / or the needle and / or the tweezers, which can come into contact with fibers and / or a yarn coated with a non-stick coating. Most preferably, however, at least the tip of the spinning cone around which the fibers are wound to form the air-spun yarn is coated with a non-stick coating.
  • the spinning element is particularly preferably a spinning cone, the surface of which, in particular fiber and/or thread-guiding, is at least in the area of the tip, preferably over at least 10%, particularly preferably over at least 25% and very particularly preferably over at least 50% of the length running in the direction of yarn withdrawal of the spinning cone and further preferably has a non-stick coating over at least 10%, particularly preferably over at least 25% along its circumferential direction.
  • the spinning cone can also have a non-stick coating over its entire length in the yarn withdrawal direction and/or circumferential direction of the fiber and/or thread-guiding surface or the entire spinning cone.
  • the fiber and/or thread-guiding surface can be arranged in any way relative to the yarn or sliver running through the air spinning nozzle, with the fiber and/or thread-guiding surface being a surface surrounding the yarn and/or the sliver according to an advantageous development of the invention .
  • surrounding means that the yarn and/or the sliver inside the air spinning nozzle is at least partially surrounded by the fiber and/or thread-guiding surface, with the fiber and/or thread-guiding surface preferring the yarn and/or the sliver to at least 90°, particularly preferably at least 180°, very particularly preferably at least 270° and particularly preferably over the entire circumference.
  • the surface surrounding the yarn and/or the sliver is an inner wall of an air spinning nozzle, in particular an inner wall of a turbulence chamber, which advantageously prevents deposits on the inner wall and in particular in the area of nozzle bore openings leading into the turbulence chamber , so that the air flow rate for producing the air-spun yarn is maintained.
  • an air spinning nozzle and in particular the turbulence chamber can be coated, with at least the preferred Part of the inner wall having nozzle bore openings and particularly preferably the entire inner wall has a non-stick coating.
  • the non-stick coating of the spinning element can have any thickness and any structure.
  • the non-stick coating preferably has a layer thickness of between 2 ⁇ m and 2 mm, preferably between 5 ⁇ m and 500 ⁇ m, particularly preferably between 10 ⁇ m and 200 ⁇ m and very particularly preferably between 10 ⁇ m and 150 ⁇ m, which on the one hand has a positive effect on the surface properties and on the other hand, there is no change in the geometry inside the air spinneret due to the non-stick coating.
  • the non-stick coating preferably has a homogeneous structure over the entire layer thickness.
  • the non-stick coating can have any number of other functions.
  • the non-stick coating particularly preferably has an antistatic surface, making the spinning element particularly suitable for polymer and plastic fibers, in particular for polyester fibers, since the fibers do not become electrostatically charged and/or stick to the plastic surface.
  • a sliver 4 from a drafting system is fed via a pair of delivery rollers 10 to a swirl chamber of the air spinneret 2 in order to swirl the outer fibers of the sliver 4 around a fiber core and thereby form a yarn 3.
  • the air spinning nozzle 2 has a plurality of spinning elements 1, each of which has a fiber or thread-guiding surface 5.
  • One of the spinning elements 1 is a needle 9, which has a fiber-guiding surface and in the region of a fiber entry opening Air spinning nozzle 2 is arranged, while another spinning element 1 is a spinning cone 8, which has a fiber and thread-guiding surface 5 in the region of its tip.
  • this non-stick coating 6 is applied at least to the tip of the spinning cone 8 .
  • this non-stick coating 6 is a polytetrafluoroethylene (Teflon, PTFE) coating which is applied flat and with a smooth surface to the material 7 of the spinning cone 8 and has a significantly lower coefficient of friction than the material 7 of the spinning cone 8 .
  • the coating can, according to a further preferred embodiment, be formed from a perfluoroalkoxyalkane polymer or a perfluoroalkoxy polymer (PFA) or from a fluoroethylene-propylene polymer or a tetrafluoroethylene-hexafluoropropylene copolymer (FEP) or a mixture of the coatings mentioned be.
  • PFA perfluoroalkoxyalkane polymer or a perfluoroalkoxy polymer
  • FEP tetrafluoroethylene-hexafluoropropylene copolymer
  • the part of the needle 9 that comes into contact with the sliver 4 can also have an anti-stick coating 6, which is preferably also made of a fluorinated hydrocarbon or a fluorinated hydrocarbon polymer, in particular polytetrafluoroethylene (Teflon, PTFE) and/or or is formed from a perfluoroalkoxyalkane polymer or a perfluoroalkoxy polymer (PFA) and/or from a fluoroethylene-propylene polymer or a tetrafluoroethylene-hexafluoropropylene copolymer (FEP).
  • a fluorinated hydrocarbon or a fluorinated hydrocarbon polymer in particular polytetrafluoroethylene (Teflon, PTFE) and/or or is formed from a perfluoroalkoxyalkane polymer or a perfluoroalkoxy polymer (PFA) and/or from a fluoroethylene-propylene polymer or a
  • a surface surrounding the sliver 4 and/or the yarn 3, in particular at least part of an inner wall of the air spinning nozzle 2 and particularly preferably an inner wall of a turbulence chamber, can also have a non-stick coating 6 , which very particularly preferably has the same chemical composition as the non-stick coating 6 of the spinning element or elements 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP20212766.8A 2020-12-09 2020-12-09 Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air Withdrawn EP4012083A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP20212766.8A EP4012083A1 (fr) 2020-12-09 2020-12-09 Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air
JP2023534992A JP2023552581A (ja) 2020-12-09 2021-11-24 空気紡績機用の空気紡績ノズルの紡績エレメント
CN202180082455.0A CN116601347A (zh) 2020-12-09 2021-11-24 用于气流纺纱机的气流纺纱嘴的纺纱件
US18/256,460 US20240026577A1 (en) 2020-12-09 2021-11-24 Spinning element of an air-jet spinning nozzle for an air-jet spinning machine
MX2023006838A MX2023006838A (es) 2020-12-09 2021-11-24 Elemento hilador de una boquilla de hilado por chorro de aire para una hiladora de chorro de aire.
PCT/EP2021/082728 WO2022122376A1 (fr) 2020-12-09 2021-11-24 Élément filière d'une filière à jet d'air pour métier à filer à jet d'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20212766.8A EP4012083A1 (fr) 2020-12-09 2020-12-09 Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air

Publications (1)

Publication Number Publication Date
EP4012083A1 true EP4012083A1 (fr) 2022-06-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20212766.8A Withdrawn EP4012083A1 (fr) 2020-12-09 2020-12-09 Élément à filer d'une filière à jet d'air pour un métier à filer à jet d'air

Country Status (6)

Country Link
US (1) US20240026577A1 (fr)
EP (1) EP4012083A1 (fr)
JP (1) JP2023552581A (fr)
CN (1) CN116601347A (fr)
MX (1) MX2023006838A (fr)
WO (1) WO2022122376A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020133359A1 (de) 2020-12-14 2022-06-15 Saurer Spinning Solutions Gmbh & Co. Kg Multifunktionsdüse für eine Spinnmaschine
DE102022114064A1 (de) 2022-06-03 2023-12-14 Saurer Spinning Solutions Gmbh & Co. Kg Fadenabzugsdüse sowie Offenend-Spinnvorrichtung mit einer Fadenabzugsdüse

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JPS5881625A (ja) * 1981-11-02 1983-05-17 Toyoda Autom Loom Works Ltd 結束紡績法および結束紡績装置
EP2677070A1 (fr) * 2012-06-22 2013-12-25 Murata Machinery, Ltd. Corps d'arbre de guidage creux, fileuse à air et machine de renvideur de fil comprenant celle-ci
EP3012362A2 (fr) * 2014-09-30 2016-04-27 Murata Machinery, Ltd. Tige de guidage creuse, dispositif de filières à air et machinerie textile
CN209098877U (zh) * 2018-09-10 2019-07-12 湖北丰帛纺织有限公司 一种用于纺纱机的高效涡流管

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EP4015681B1 (fr) * 2020-12-18 2025-01-29 Saurer Intelligent Technology AG Poste de filage doté d'une buse de nettoyage et procédé de nettoyage d'un élément de formation de fil
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Publication number Priority date Publication date Assignee Title
JPS5881625A (ja) * 1981-11-02 1983-05-17 Toyoda Autom Loom Works Ltd 結束紡績法および結束紡績装置
EP2677070A1 (fr) * 2012-06-22 2013-12-25 Murata Machinery, Ltd. Corps d'arbre de guidage creux, fileuse à air et machine de renvideur de fil comprenant celle-ci
EP3012362A2 (fr) * 2014-09-30 2016-04-27 Murata Machinery, Ltd. Tige de guidage creuse, dispositif de filières à air et machinerie textile
CN209098877U (zh) * 2018-09-10 2019-07-12 湖北丰帛纺织有限公司 一种用于纺纱机的高效涡流管

Also Published As

Publication number Publication date
WO2022122376A1 (fr) 2022-06-16
US20240026577A1 (en) 2024-01-25
MX2023006838A (es) 2023-06-22
CN116601347A (zh) 2023-08-15
JP2023552581A (ja) 2023-12-18

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