EP3842578B1 - Métier à filer à anneaux et procédé de fabrication d'un fil à âme - Google Patents

Métier à filer à anneaux et procédé de fabrication d'un fil à âme Download PDF

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Publication number
EP3842578B1
EP3842578B1 EP20213398.9A EP20213398A EP3842578B1 EP 3842578 B1 EP3842578 B1 EP 3842578B1 EP 20213398 A EP20213398 A EP 20213398A EP 3842578 B1 EP3842578 B1 EP 3842578B1
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EP
European Patent Office
Prior art keywords
clamping
thread
fibre composite
groove
rollers
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
EP20213398.9A
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German (de)
English (en)
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EP3842578A1 (fr
Inventor
Ludger Budde
Oliver Dorn
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.)
Peppermint Holding GmbH
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Peppermint Holding GmbH
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Filing date
Publication date
Application filed by Peppermint Holding GmbH filed Critical Peppermint Holding GmbH
Priority to EP23198988.0A priority Critical patent/EP4273310A3/fr
Publication of EP3842578A1 publication Critical patent/EP3842578A1/fr
Application granted granted Critical
Publication of EP3842578B1 publication Critical patent/EP3842578B1/fr
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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
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/78—Rollers or roller bearings with flutes or other integral surface characteristics
    • 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
    • D02G3/324—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic using a drawing frame

Definitions

  • the present invention relates to a ring spinning machine and a method for producing a core yarn.
  • Core yarns consist of several components, for example a filament, which forms the core of the later core yarn, is covered with spinnable fibers. In this way, the desired properties of the individual components are combined with one another. This enables the production of elastic and dimensionally stable fabrics that, for example, also offer the wearing comfort of cotton.
  • the filament runs via a deflection roller into a pair of clamping rollers, which clamp the filament along a clamping line in the same way as a staple fiber structure that was previously stretched in a drafting system.
  • the two components i.e. the filament and the staple fiber structure
  • a rotation which is caused by a rotation imparting device that rotates around a yarn cop and thereby winds the yarn on the cop.
  • the DE 198 04 341 A1 shows such a device and a corresponding method. Since the filament as well as the staple fiber structure is engaged by the clamping line, the respective delivery speeds of the components cannot be varied, so that no influence can be had on where the filament will lie in the later yarn. In conventional core yarns, the filament repeatedly comes to the surface of the finished yarn and is therefore partially covered by staple fibers along its length.
  • the GB 765 295 A , US 3,009,311 A and CN 102 330 235 A show further ring spinning machines for producing a core yarn.
  • the yarn core can not only be made completely invisible by completely covering it with a staple fiber structure, which in particular significantly improves the dyeing ability of the yarn, but can also be removed from direct contact, for example with the skin.
  • the ring spinning machine has at least one groove running around the circumferential surface of at least one of the clamping rollers and interrupting the clamping line, which receives the at least one thread as it passes through the clamping device and leads it past the clamping line without it being engaged in a clamping manner by the clamping rollers that are in contact with one another .
  • at least one thread which is later to form the core of the core yarn, is fed in a known manner to the clamping device at the outlet of the drafting system and, like the staple fiber structure, runs between the two clamping rollers, which roll on one another along a clamping line.
  • this at least one thread is not clamped by the clamping rollers along the clamping line like the staple fiber association, but is removed from the clamping engagement by running into a groove before or at the latest at the clamping line, which is at least in the outer lateral surface one of the clamping rollers is incorporated. In this way, the at least one thread can pass the clamping line without coming into contact with the clamping rollers.
  • the at least one thread to be fed to the fiber structure and which later forms the yarn core can also include or consist of a staple fiber structure.
  • the at least one thread can also comprise one or more continuous filaments or consist of these.
  • the at least one thread can comprise/be an inelastic endless filament or can comprise/be an elastic endless filament, wherein the at least one thread in particular can also include or consist of at least one inelastic endless filament in addition to at least one elastic endless filament.
  • At least one further thread can also be fed to the fiber structure in a conventional manner.
  • a conventionally fed thread can be, for example, an elastic or inelastic endless filament, which is engaged by the clamping rollers at the clamping line.
  • such a conventionally fed thread can be engaged in the section of the clamping line in which the staple fiber structure is also engaged by the clamping rollers.
  • all components of the finished core yarn pass through the clamping device and/or are brought together before passing through a thread guide immediately adjacent to the clamping device.
  • the first alternative is intended to express that no further parts or components that have not passed through the clamping device are added to the core yarn after it leaves the clamping device.
  • the yarn leaving the drafting system and the clamping device is wrapped with a so-called effect yarn, as is the case, for example, from DE 24 12 390 is shown is intended to be avoided by the present invention. Rather, all components of the later core yarn should be guided through the clamping device in a compact manner in order to be twisted into the finished core yarn immediately after the clamping line.
  • the finished core yarn can already be present at the end of the spinning triangle adjoining the clamping line, but this does not rule out the core yarn being twisted further until it is finally wound onto a yarn cop.
  • the finished core yarn can also be present in its composition before it passes through the first thread guide, which connects directly to the clamping device or the clamping line in the transport path of the yarn, i.e. without the interposition of further equipment on the ring spinning machine.
  • the fiber structure and the at least one thread can pass through a thread guide immediately after leaving the clamping device, which essentially occupies the same axial position as a groove relative to an axis of rotation of one of the clamping rollers.
  • the aim of this is to ensure that the transport path imposed on the yarn components by the thread guide does not result in the thread picked up in the groove coming into contact with its walls when leaving the groove and thus wearing them out.
  • a further advantage associated with this arrangement of the thread guide is that the thread guide influences the twisting of the thread caused by the rotation imparting device as little as possible, so that the twisting of the thread continues as far as possible beyond the clamping line, so that the thread is then subject to a subdivision of rotation can before or while it passes the clamping line.
  • this thread guide can be positioned to a preferred groove in the manner described above, while the other grooves arranged offset thereto can be arranged near the first-mentioned groove in order to achieve the influences described above minimize.
  • the clamping line can be interrupted several times by two or more grooves, which are machined into the peripheral surface of one or different clamping rollers at a distance from one another.
  • the clamping line can also be formed at one or more points by two opposite grooves running around the circumferential surfaces of both clamping rollers be interrupted.
  • pairs of clamping rollers are usually formed by a drive roller made of a metal material and a pressure roller made of a rubber material that is prestressed relative to the drive roller.
  • the one or more grooves can be incorporated in any way into one or both of these rollers.
  • At least one or more grooves have a flat or concave bottom region in cross section, the axial extent of which, parallel to the axis of rotation of the clamping roller, is at least one, in particular at least twice, the diameter of a thread to be picked up by the groove.
  • a thread received in a groove if possible, does not contact any side wall of the groove in order to avoid unnecessary wear.
  • the side walls of the groove can be sufficiently spaced apart.
  • the groove bottom is at least partially concave or has partial sections that converge in a wedge shape.
  • a clamping effect on the thread similar to that of a V-belt pulley, should be avoided in order not to impair the thread itself or its transport.
  • this can be designed in such a way that its axial extent parallel to the axis of rotation of the respective clamping roller increases with increasing distance from the axis of rotation.
  • the cross section of the groove can widen at least in sections towards the peripheral surface of the clamping roller. What would be conceivable for this would be a "chamfered” or rounded transition of the groove side walls towards the roller surface, as well as groove side walls that diverge in cross section.
  • the at least one groove is spaced from the section of the clamping line in which the fiber structure is clampingly engaged by the mutually contacting clamping rollers after leaving the drafting system. This prevents the groove provided for the thread from becoming clogged with staple fibers detaching from the fiber structure and thus becoming unusable for thread guidance.
  • a small distance between the groove and the section of the clamping line engaging the fiber structure should be aimed for, since as the distance becomes smaller, the necessary staple fiber length of processable fiber structures also decreases. Since the thread leaving the groove is ultimately intended to be wrapped by the staple fiber structure, the latter must be brought close to the thread after leaving the clamping line.
  • the groove is spaced from the clamping line section engaging the staple fiber assembly, the path to be covered by the staple fiber assembly increases and ultimately the risk of it tearing off also increases. According to the present invention, this distance can be selected depending on the staple fiber length to be processed. According to the invention, the axial position of the groove can be varied by axially moving the corresponding clamping roller in the ring spinning machine. In addition, the use of different clamping rollers with grooves arranged differently in the axial direction would also be conceivable.
  • the one or more threads guided through the at least one groove escape the clamping line and thus also the clamping engagement between the clamping rollers, they can be over-delivered or under-delivered compared to the fiber structure in any way, i.e. an arbitrarily higher or arbitrarily lower delivery speed when passing through the clamping device. Since, according to a preferred embodiment, complete coverage of the at least one thread by the staple fiber association is desired over the length, in such an embodiment the thread can be delivered below the staple fiber association. Since the fiber structure emerges from the clamping device at a greater delivery speed, it can wrap around the at least one thread and ultimately cover it completely. For example, the thread can be 5%, 10%, 15% or even 20% have a lower delivery speed than the fiber structure, i.e. under-delivery by 5%, 10%, 15% or even 20%.
  • a further aspect of the present invention relates to a method for producing a core yarn according to claim 8.
  • the Figure 1 shows a ring spinning machine according to the present invention, by means of which a fiber structure 2, also known as a sliver or roving, and a thread 4, which in the present case is provided as an elastic or inelastic or rigid endless filament, are drawn off from material templates 1 or 3 and spun into a core yarn 11 become.
  • the fiber structure 2 pulled off from the material template 1 passes through an initially unnamed pair of inlet rollers of the drafting system 5 and is then fed to the drafting system 5, which pulls the staple fibers of the fiber structure apart to a desired degree.
  • the fiber structure 2 is then fed to a pair of outlet rollers of the drafting system 5, which is referred to below as a clamping device 6.
  • the clamping roller 8 which is made of a metal material and designed as a drive roller, contacts the clamping roller 9, which is prestressed relative to it, is made of a rubber material and is designed as a pressure roller, along a clamping line 7, along which the fiber structure 2 is clamped by the clamping rollers 8, 9.
  • the fiber structure 2 is fed to the thread 4, which is pulled off from the material template 3 by means of a drive device (not shown), guided over an unnamed deflection roller and passed between the clamping rollers 8, 9 through the clamping device 6.
  • the thread 4 is not engaged by the clamping rollers 8, 9 in a clamping manner, but is instead clamped by means of a groove (see the Figures 2 and 3 ) passed the clamping line 7 and can therefore pass through the clamping device with an under-delivery compared to the fiber structure 2.
  • the fiber structure 2 that has been delivered compared to the thread 4 is placed around the thread 4 by the rotation distribution device 10 being applied to both the fiber structure 2 as well as the thread 4, a rotation is imposed before they are wound up as the finished twisted core yarn 11 on the unnamed yarn cop.
  • the Figure 2 shows a detailed view of the clamping device 6 in the Figure 1 shown ring spinning machine along the rotation axes R of the clamping rollers 8, 9. It can be seen that the thread 4 pulled off from the material template 3 is first guided over an unnamed deflection roller and, when detached from its peripheral surface, is inserted into a groove 13, which is in the Circumferential surface 12 of the clamping roller 9 is incorporated and runs circumferentially. Since the depth of the groove 13 is greater than the diameter of the thread 4, the thread 4 is guided past the clamping line 7 in the groove 13 and is therefore not engaged by the clamping rollers 8, 9, as is the case for the fiber structure 2 . The latter is namely clamped between the peripheral surfaces 12 and 16 of the clamping rollers 9 and 8 along the clamping line 7.
  • the Figure 3 shows a side view of the viewing plane AA from the Figure 2 . It can be seen that the fiber structure 2 and the thread 4 are guided between the clamping rollers 8, 9 parallel and perpendicular to the axes of rotation R of the clamping rollers 8, 9.
  • the fiber structure 2 is clamped along the section 15 of the clamping line 7 by the clamping rollers 8 and 9.
  • the thread 4 can Clamping line 7 can pass unhindered and unaffected by the rotation of the clamping rollers 8, 9 by inserting itself into the groove 13, which is spaced from section 15 along the axis of rotation R of the clamping roller 9. Clogging of the groove 13 by staple fibers coming loose from the fiber structure 2 is effectively avoided by the distance between the groove 13 and section 15.
  • the fiber structure 2 After passing the clamping line 7, the fiber structure 2 is fed to the thread 4 and wraps around the thread in such a way that it is completely covered by the fiber structure 2 over its entire length. This is achieved in that the thread 4 is under-delivered compared to the fiber structure 2 to a certain extent, i.e. has a lower delivery speed than the fiber structure 2.
  • the fiber structure 2 thus has a sufficiently large delivery length to wrap around the thread 4.
  • the placement of the thread guide 14 immediately adjacent to the clamping line 7 in a substantially same axial position as the groove 13 ensures that the thread 4 becomes the main point of attack for imparting rotation and the Fiber structure 2 therefore inevitably lies around the thread 4.
  • the fiber structure 2 can be placed around the thread 4 without tearing off by separating staple fibers from one another in the longitudinal direction. Even before the fiber structure 2 passes through the thread guide 14 together with the thread 4, the finished core yarn 11 with all of its components is already there, as it is ultimately wound onto a yarn cop. However, the twisting of the fiber structure 2 together with the thread 4, which is caused by the rotation distribution device 10 and begins in the area of the clamping line 7, continues even after the thread guide 14 has passed through.

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  • 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)

Claims (8)

  1. Métier à filer à anneaux pour la fabrication d'un fil guipé (11), comprenant :
    - un premier dévidoir (1) destiné à une structure fibreuse (2) de fibres coupées,
    - au moins un autre dévidoir (3) destiné à au moins un fil (4) destiné à être apporté à la structure fibreuse (2),
    - un système d'étirage (5) destiné à étirer la structure fibreuse (2),
    - un dispositif de pinçage (6) comportant des rouleaux de pinçage (8, 9) en contact l'un avec l'autre dans une ligne de pinçage (7), ledit dispositif de pinçage (6) étant traversé par la structure fibreuse (2) ayant quitté le système d'étirage (5) et par au moins un fil (4), et la structure fibreuse (2) ainsi que le fil (4) passant entre les rouleaux de pinçage (8, 9),
    - une unité de mise en rotation (10) qui torsade la structure fibreuse (2) quittant le dispositif de pinçage (6) et l'au moins un fil (4) quittant le dispositif de pinçage (6) pour former un fil guipé (11) en enroulant la structure fibreuse (22) autour du fil (4) ;
    au moins une rainure (13) circonférentielle interrompant la ligne de pinçage (7) étant formée sur la surface de contact (12) d'au moins un des rouleaux de pinçage (8, 9) et recevant l'au moins un fil (4) lors de son passage entre les rouleaux de pinçage (8, 9) et le guidant sur la ligne de pinçage (7) sans que ce celui-ci ne vienne en prise avec serrage avec les rouleaux de pinçage (8, 9) qui se touchent,
    caractérisé en ce que
    la distance séparant l'au moins une rainure (13) de la portion de la ligne de pinçage (7) avec laquelle la structure (2) vient en prise avec serrage peut subir une variation par déplacement axial du rouleau de pinçage (8, 9) présentant la rainure (13) en fonction de la longueur des fibres coupées de la structure fibreuse (2).
  2. Métier à filer à anneaux selon la revendication 1, dans lequel l'ensemble des constituants du fil guipé (11) fini traversent le dispositif de pinçage (6) et/ou sont réunis avant de passer par un guide-fil (14) situé immédiatement en aval du dispositif de pinçage (6).
  3. Métier à filer à anneaux selon la revendication 1 ou 2, dans lequel la structure fibreuse (2) et l'au moins un fil (4) traversent un guide-fil (14) immédiatement après avoir quitté le dispositif de pinçage (6), lequel guide-fil, par rapport à l'axe de rotation (R) d'un des rouleaux de pinçage (8, 9), prend sensiblement la même position axiale qu'une rainure (13).
  4. Métier à filer à anneaux selon l'une des revendications 1 à 3, dans lequel la ligne de pinçage (7) est interrompue par deux rainures (13) circonférentielles en vis-à-vis présentes sur les surfaces de contact (12, 16) de leur rouleau de pinçage (10, 11) respectif et/ou la ligne de pinçage (7) est interrompue plusieurs fois par au moins deux rainures (13) espacées axialement les unes des autres.
  5. Métier à filer à anneaux selon l'une des revendications 1 à 4, dans lequel l'au moins une rainure (13) présente, en section transversale, une zone de fond plane ou concave dont l'étendue axiale le long de l'axe de rotation (R) du rouleau de pinçage (8, 9) fait au moins une fois, notamment au moins deux fois, le diamètre d'un fil (4) reçu dans ladite rainure (13).
  6. Métier à filer à anneaux selon la revendication 1 ou 5, dans lequel l'étendue axiale de l'au moins une rainure (13) augmente avec l'accroissement de la distance radiale par rapport à l' axe de rotation (R) du rouleau de pinçage (8, 9) respectif.
  7. Métier à filer à anneaux selon l'une des revendications 1 à 6, conçu pour effectuer un moindre apport en au moins un fil (4), destiné à être apporté à la structure fibreuse (2) et reçu dans l'au moins un rainure (13), par rapport à la structure fibreuse (2).
  8. Procédé de fabrication d'un fil guipé (11) sur un métier à filer à anneaux, comprenant les étapes consistant à :
    - fournir une structure fibreuse (2) de fibres coupées,
    - fournir au moins un fil (4) destiné à être apporté à la structure fibreuse (2),
    - étirer la structure fibreuse (2) dans un système d'étirage (5),
    - faire passer la structure fibreuse (2) quittant le système d'étirage (5) et l'au moins un fil (4) par un dispositif de pinçage (6) comportant des rouleaux de pinçage (8, 9) en contact l'un avec l'autre dans une ligne de pinçage (7) de façon que la structure fibreuse (2) ainsi que le fil (4) passent entre les rouleaux de pinçage (8, 9),
    - torsader la structure fibreuse (2) quittant le dispositif de pinçage (6) et l'au moins un fil (4) quittant le dispositif de pinçage (6) pour former un fil guipé (11), par enroulage de la structure fibreuse (2) autour du fil (4) ;
    ledit au moins un fil (4), lors de son passage entre les rouleaux de pinçage (8, 9), étant reçu dans une rainure (13) circonférentielle réalisée dans la surface de contact (12) d'au moins un des rouleaux de pinçage (8, 9) et interrompant la ligne de pinçage (7) et étant guidé sur la ligne de pinçage (7), sans venir en prise avec serrage avec les rouleaux de pinçage (8, 9) qui se touchent,
    caractérisé en ce que
    la distance séparant l'au moins une rainure (13) de la portion de la ligne de pinçage (7) avec laquelle la structure (2) vient en prise avec serrage subit une variation par déplacement axial du rouleau de pinçage (8, 9) présentant la rainure (13) en fonction de la longueur des fibres coupées de la structure fibreuse (2).
EP20213398.9A 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme Active EP3842578B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23198988.0A EP4273310A3 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019135719.5A DE102019135719B4 (de) 2019-12-23 2019-12-23 Vorrichtung und Verfahren zur Herstellung eines Core-Garns

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP23198988.0A Division-Into EP4273310A3 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme
EP23198988.0A Division EP4273310A3 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme

Publications (2)

Publication Number Publication Date
EP3842578A1 EP3842578A1 (fr) 2021-06-30
EP3842578B1 true EP3842578B1 (fr) 2023-11-22

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EP20213398.9A Active EP3842578B1 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme
EP23198988.0A Pending EP4273310A3 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme

Family Applications After (1)

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EP23198988.0A Pending EP4273310A3 (fr) 2019-12-23 2020-12-11 Métier à filer à anneaux et procédé de fabrication d'un fil à âme

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EP (2) EP3842578B1 (fr)
DE (1) DE102019135719B4 (fr)
DK (1) DK3842578T3 (fr)
PL (1) PL3842578T3 (fr)
PT (1) PT3842578T (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115323535B (zh) * 2022-08-25 2023-09-05 无锡市新康纺机有限公司 一种自动落纱的捻线机

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DE707116C (de) * 1938-06-15 1941-06-13 Rudolf Landwehr Effektzwirnmaschine
GB765295A (en) 1954-01-06 1957-01-09 Celanese Corp Improved process and apparatus for the production of composite yarns
US3009311A (en) 1957-03-13 1961-11-21 Us Rubber Co Elastic yarn
GB1461783A (en) * 1973-03-16 1977-01-19 Iws Nominee Co Ltd Yarn production
DE4430835A1 (de) * 1994-08-31 1996-03-07 Schurr Stahlecker & Grill Vorrichtung zur Herstellung von Core-Garn
DE19804341A1 (de) * 1998-02-05 1999-08-12 Rieter Ag Maschf Verfahren zur Herstellung eines Umwindegarns, Spinnmaschine zur Durchführung des Verfahrens sowie entsprechend hergestelltes Garn
DE19815054C5 (de) * 1998-04-03 2007-06-14 Saurer Gmbh & Co. Kg Verfahren und Spinnmaschine zum Herstellen von Coregarn
DE19815050B4 (de) * 1998-04-03 2005-09-22 Saurer Gmbh & Co. Kg Verdichtungsstreckwerk für eine Spinnmaschine
DE19860201B4 (de) * 1998-12-24 2008-12-18 Maschinenfabrik Rieter Ag Vorrichtung zum Spinnen eines Fadens aus mehreren Fadenkomponenten
US7155891B2 (en) 2003-09-15 2007-01-02 E. I. Du Pont De Nemours And Company Composite twist core-spun yarn and method and device for its production
DE102006018073A1 (de) * 2006-04-10 2007-10-11 Spindelfabrik Suessen Gmbh Zuführrolle für einen Kernfaden zu einem Stapelfaserverband
CN101126188B (zh) * 2007-09-28 2010-05-19 天津工业大学 一种纺制包芯纱的设备及方法
CN102330235B (zh) 2011-08-23 2014-11-05 东华大学 短纤维束对称包覆刚性纤维长丝的纺纱方法
CN102787402B (zh) * 2012-07-22 2014-12-10 东华大学 单斜面槽间歇式超喂复合纺纱装置、工艺及应用
CN102787410B (zh) 2012-07-22 2014-08-13 东华大学 对称斜面槽间歇式超喂复合纺纱装置、工艺及应用
CN102808261B (zh) * 2012-07-22 2016-01-06 东华大学 一种双位间歇式超喂复合纺纱装置和复合纺纱工艺及应用
CN102787412B (zh) * 2012-07-22 2014-08-13 东华大学 单侧两槽间歇式超喂复合纺纱装置、工艺及应用

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Publication number Publication date
DE102019135719A1 (de) 2021-06-24
PL3842578T3 (pl) 2024-04-29
EP4273310A3 (fr) 2024-01-10
DK3842578T3 (da) 2024-02-19
DE102019135719B4 (de) 2023-11-30
PT3842578T (pt) 2024-01-19
EP3842578A1 (fr) 2021-06-30
EP4273310A2 (fr) 2023-11-08

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