US3604194A - Fiber supply method and apparatus in an open-end spinning system utilizing airflow and centrifugal force - Google Patents

Fiber supply method and apparatus in an open-end spinning system utilizing airflow and centrifugal force Download PDF

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Publication number
US3604194A
US3604194A US794101*A US3604194DA US3604194A US 3604194 A US3604194 A US 3604194A US 3604194D A US3604194D A US 3604194DA US 3604194 A US3604194 A US 3604194A
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United States
Prior art keywords
fibers
fiber
rotor
bundle
supply device
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US794101*A
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English (en)
Inventor
Hiroshi Edagawa
Keiichi Minami
Kozo Susami
Masakazu Hirota
Masaaki Tabata
Toshimoto Matsubara
Kunio Shinkai
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Toray Industries Inc
Howa Machinery Ltd
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Toray Industries Inc
Howa Machinery Ltd
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Priority claimed from JP565768U external-priority patent/JPS4714181Y1/ja
Priority claimed from JP565868U external-priority patent/JPS4839069Y1/ja
Application filed by Toray Industries Inc, Howa Machinery Ltd filed Critical Toray Industries Inc
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    • 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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/34—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using air-jet streams
    • 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
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls

Definitions

  • a distance between the nip point of the supply source and the above-mentioned position is particularly defined with respect to the staple length of the spinning material. Furthermore, preferable shapes are illustrated for the fiber guide conduit, the fiber-separating passage, and the fiber supply conduit of the fiber supply device for producing a high quality yarn.
  • the present invention relates to a fiber supply method and device for use in a spinning system utilizing airflow and centrifugal force, and, more particularly, it relates to a method for supplying a continuous bundle of fibers from a fiber supply source to a high-speed spinning rotor, wherein the bundle of fibers is first shredded to provide. individual fibers which are carried with a high-speed airstream from the supply source to an inside wall of the rotating rotor.
  • the above-mentioned known spinning equipment comprises means for supplying a continuous bundle of fibers from a high-speed supply source to a rotor, so that the bundle of fibersis shredded into numerous individual fibers when the fibers are carried together with an airstream flowing toward the inside wall of the rotor, and so that the shredded fibers are accumulated in the inside wall of the rotating rotor successively by an action of the centrifugal force and airflow; and, means for stripping the accumulated fibers from the inside wall of the rotor, and for twisting the bundle of fibers when the accumulated fibers are stripped from the rotor and carried to a takeup roller.
  • the above-mentioned means for supplying a continuous bundle of fibers is a very important element of a spinning system of this type, since the shredding action has a profound effect on the quality of the yarn.
  • the rincipal object of the present invention is toprovide a method and apparatus for. supplying a bundle of fibers in a condition wherein the yarn may be spunin a steady and highly efficient manner while shredding the bundle of fibers into separate individual fibers.
  • a further object of the present invention is to provide a practical device for supplying a uniform amount of individual fibers, from a bundle of fibers, to a rotating rotor while controlling the speed of the suction airstream.
  • FIG. l is a sectional view of the main portion of spinning equipment provided with an embodiment of the supply device according to the present invention
  • FIG. 2 is a sectional view of the supply device shown in FIG.
  • FIG. 3 is an explanatory diagram showing the variation curve of the fluid speed of the airstream in the supply device shown in FIG. 1,
  • FIG. 4 is an enlarged sectional view of the entrance portion of the supply device shown in FIG. 1,
  • FIGS. 5A and 5B are explanatory diagrams showing the variation curve of the fluid speed of the supply device in connection with the particular shape of the passage shown in this drawing,
  • FIG. 6 is an explanatory staple diagram showing the shape of individual fibers carrying through the passage of the supply device
  • FIG. 7 is a sectional view of another embodiment of the supply device according to the present invention.
  • FIG. 8A is a sectional view of the supply device, taken along line VIIlA-VIIIA, shown in FIG. 7,
  • FIG. 8B is a sectional view of a supply device, similar to the device shown in FIG. 7, taken in the same way as the drawing of FIG. 8A,
  • FIG. 8C is a sectional view of the supply device, taken along line VIIICVIIIC, shown in FIG. 7,
  • FIG. 8D is a sectional view of a supply device, similar to the device shown in FIG. 7, taken in the same way as the drawing of FIG. 8C,
  • FIG. 9 is a sectional view of another embodiment of the supply device according to the present invention.
  • FIG. 10 is an explanatory view of the passage of the supply device shown in FIG. 9.
  • a bundle of fibers is continuously fed into a supply device so as to convey the fibers to an inside wall of a spinning rotor while shredding the bundle of fibers into separated individual fibers.
  • a plurality of fibers accumulated upon the inside wall of the rotor is taken out, they are twisted to produce yarn.
  • the fibers are extracted from the bundle at a distance L between a nip point of the fiber supply source and a particular position in a fiber supply passage of the device where thefluid speed of the airstream is maximum, said distance being less than the average fiber length of the spinning material, and greater than two-thirds of the average fiber length of the spinning material.
  • a bundle of fibers l which is delivered from a pair of delivery rollers 2a, 2b and fed into a fiber guide conduit 3 of the supply device, is shredded to form individual fibers which are separated from each other in such a way that an individual fiber is drawn from the bundle of fibers while being conveyed in a fiber-separating passage 4.
  • the individual fibers are conveyed by an airstream through a fiber supply conduit to a spinning rotor the inside wall of the rotor 6.
  • a plurality of fibers accumulated upon the inside wall of the rotor 6 are stationarily taken out of the rotor, at a point on the rotational axis thereof, while twisting them so as to form a yarn 7 which is taken up by a pair of takeup rollers 9a, 9b after passing through a discharge pipe 8, whereupon a yarn package is made by a winder (not shown).
  • the abovementioned supply device of the present invention is provided with a particular construction as illustrated in the drawings. That is, referring to FIG. 2, the supply device of the invention is connected to a compressed-air source, disposed outside of the spinning equipment, by way of anair supply conduit 11, and the compressed air supplied through the conduit II, and the compressed air supplied through the conduit 11 is ejected from a cylindrical slit 10 at a position adjacent to an outlet 13 of the fiber guide conduit 3 after passing through a cavity 12.
  • the air pressure in the fiber guide conduit 3 becomes negative in accordance with the ejecting effect caused by the jetstream of the air from the circular slit l0, and the bundle of fibers I delivered from the delivery rollers 2a and 2b is fed through the fiber guide conduit 3 by the suction force of the airstream.
  • the bundle of fibers is shredded into individual fibers, separated from each other at a position adjacent to the outlet 13 of the fiber guide conduit 3 and the fiber-separating passage 4, and the individual fibers are then blown to the inside wall of the rotating spinning rotor 6.
  • the jetstream from the circular slit 10 causes a pulling force of the fibers from the bundle of fibers l and a force for separating the fibers from each other.
  • it is desirable after shredding the bundle of fibers to supply the individual fibers into the rotating spinning rotor in a uniform and stational condition as illustrated in FIG. 1. It must be recognized in particular, that it is more important to shred the bundle of fibers into individual fibers rather than to convey separated fibers with the airstream. Further, it is preferable to use a lesser quantity of compressed air with lower pressure.
  • the arrangement of the fibers is disheveled by the high-speed airstream while passing through the fiber-separating passage 4, and the fibers are conveyed to the inside wall of the rotor 6 in an irregular condition. Therefore, the yarn breakage during the spinning operation increases remarkably, and only slubby yarn can be produced.
  • the distance L must be in a range from two-thirds times of the average fiber length to the value below the average fiber length for imparting the effective shredding action to draw individual fibers from the bundle of fibers one by one.
  • EXAMPLE I In the spinning equipment shown in FIGS. I and 2, the distance S between the entrance of the fiber guide conduit 3 of the fiber supply device and the nip point of the delivery rollers 2a, 2b was set as mm., the distance L between the nip point of the above-mentioned delivery rollers and the position of the fiber supply device where the fluid speed of the air stream was maximum is set as onehalf or, two-thirds or, four-fifths or,
  • the diameter of the conduit for passing the airstream at the abovedefined position of the supply device was set as 2.5 mm. so as to attain the maximum fluidspeed of the airstream of 120 m.p.s.
  • a roving composed of polypropylene staple fiber (fineness l.5d, staple length 38 mm.) was drafted at the draft ratio of 25 by a fiber supply source, and the drafted bundle of fibers was supplied to the above-mentioned spinning equipment, whereby the result shown in table I was obtained.
  • the conveying condition of the fibers in the fiber supply device was observed during the spinning operation. In this spinning block the yarn count in cotton system is 30" the twist multiplier was 5.0.
  • the air pressure of the supplied air was 0.4 kg./cm., and the air capacity applied for this test was lOI/min.
  • the preferable conditions are observed in the test of Test No. 2, 3 and 4, in other words, the distance L must be preferably set in the range -;lL l, to produce yarn having good quality with high-spinning efficiency.
  • a principal condition for producing the high-quality yarn having a low breakage rate by the abovementioned spinning equipment is that a bundle of fibers supplied from a supply source such as a draft device must be conveyed into the fiber supply device smoothly. It is also necessary that the bundle of fibers is shredded into individual fibers separated from each other, while passing through the fiber supply device and that individual fibers are extracted from the bundle of fibers one by one so as to be blown to the inside wall of the rotating spinning rotor ln the above-mentioned conditions, the compressed air must be effectively applied to develop the airstream of the desired condition in the fiber supply device.
  • the fiber guide conduit of the fiber supply device is preferably trumpet-shaped with a crosssectional diameter, in addition to the above-mentioned limitation of the distance L.
  • the inside diameter of the fiber supply conduit 3 is designated as d
  • the diameter of the entrance of the conduit 3 is designated as D
  • the distance between the outside surface of the entrance and a terminal of the trumpet-shaped entrance is represented as m
  • the following conditions are desirable to solve the trouble caused by the accumulation of fibers upon the s? sith fihs sl d; Q B hEP 4 D Z 1.
  • the above-mentioned condition can be applied for using the fiber guide conduit provided with a tapered conduit.
  • FIG. 5A two different types of conduits a and b are shown.
  • the detailed dimension of the conduits a and b are shown in table 2.
  • the bundle of fibers can be drawn by the air pressure into the fiber supply conduit 3 and disposed at a stationary position. Also, it is desirable that the inside diameter of the fiber-separating passage 4, succeeding to the fiber guide conduit 3 be uniform, and the fiber supply conduit 5, succeeding to the fiber-separating passage 4, be spread out toward the outlet of such conduit 5.
  • the polytetrafluorethylene resin is preferably applied with a coating thickness in a range between 10 and 60 u, and if the coating thickness is thinner than the above-mentioned value, socalled pinholes are produced in the coating, thereby the above-mentioned drawback can not eliminate. Further, the coefficient of friction, of the inside wall of the passage to the fiber, after the above-mentioned coating has been applied, decreases, for example, to 0.17 in case of the yarn speed of 50 m/min.
  • EXAMPLE 3 In the spinning equipment shown in FIG. 1, the inside wall of the fiber guide conduit 3 and the fiber-separating passage 4 were coated by polytetrafluoroethylene resin with 20 thickness. Before the coating treatment, the inside walls of the conduit 3 and the passage 4 were cleaned by a certain chemical agent. Polypropylene staple fiber (fineness 1.5 denier, staplc length 38 mm.) was used for this experiment. The air pressure of the supplied air was 0.4 to 0.5 kg./cm. The conveying condition of fibers was observed by using a stroboflash device and the yarn was produced and studied with regard to its quality.
  • the ordinate represents fiber length" in millimeter, while the abscissa represents distance from the origin of the staple diagram" in centimeter.
  • the yarn C produced by the coated device shows better quality than the yarn B.
  • the number of fibers having longer length than 20 mm., that is number of hooks contained in the yarn, of the yarns B and C is greater than that of yarn A, and it is shown that the tensile strength of the yarns B and C is almost 10 percent weaker than that of the yarn A.
  • the yarn breakage during the spinning operation is remarkably reduced by using the coated device, whereby the yarn quality and spinning efficiency are also improved by the above-mentioned coating treatment.
  • the shape of the fiber passage composed of the fiber guide conduit and the fiber-separating passage be provided with at least a portion having a flattened cross section such as elliptical or rectangular, rather than the circular cross section, particularly at the entrance of the fiber guide conduit.
  • This is particularly effective in case of applying the conventional roller draft for the fiber supply source.
  • the shredding of the bundle of fibers into the individual fibers and the extraction of individual fibers from the bundle of fibers are more effectively achieved with this structure.
  • the maximum width of the transverse motion is almost 6 mm.
  • the airstream in the conduit can be maintained stationary, and the conveying speed of the fibers together with the airstream can be controlled so as to obtain good yarn quality.
  • the fiber passage comprises a fiber guide field 14 and a fiber separation field 17 so as to form a passage for conveying fibers.
  • X-Y coordinates are considered in a cross-sectional plane of the passage, and the long axis a and short axis b are also considered in the X and Y coordinates respectively, the ratio b/a of the cross section of the passage is set in a range below 1, in other words, b/a l.
  • any shape of the cross sections of the passage may be applied for the fiber guide conduit of the present invention if the abovementioned condition (b/a 1) is satisfied.
  • the preferable elliptical and rectangular cross section of the conduits are shown in FIGS. 8A and 8B.
  • the cross section of the conduit shown in FIG. 8C shows a cross section of the conduit, taken along line VIII-VIII, in FIG. 7, and the cross sections of the conduit at the terminal of the fiber guide field and the fiber separation field are rectangular.
  • the suction airstream of the fiber guide conduit and the airstream of the fiber separating passage can be effectively controlled.
  • the entrance of the fiber guide conduit has sufficient width to receive the fleece having a certain width, even if the supply of the fleece has a transverse motion imported thereto.
  • the cross section of the entrance of the fiber guide conduit is set as b/a l so as to receive the fleece without any disturbance.
  • the above-mentioned effect is hereinafter illustrated as follows. Referring to FIG. 7 and FIGS. 8C and 8D, a high-speed fluid stream f develops the secondary airstream g flowing in the same direction as stream f, and the secondary airstream g forms a suction airstream for drawing the supplied bundle of fibers into the fiber guide conduit.
  • the strength of the airstream g can be controlled by adjusting the condition of the fluid stream f together with the above-mentioned second effect caused by the shape of the fiber guide conduit.
  • the conduit having the cross section shown in FIG. 8D is more effective in comparison with the conduit having the circular cross section shown in FIG. 8C with regard to conveying the bundle of fibers comprising the same number of fibers.
  • the radius of the circular cross section must be limited to a smaller value in comparison with the long axis a of the cross section of the ellipse so as to obtain the equal suction force.
  • the intervened space 21 between the inside wall of the conduit and the surface of the fibers must be constant in any conduit having a different cross section as shown in FIGS. 8C and 8D.
  • FIGS. 9 and 10 another embodiment of the fiber supply device provided with a modified fiber guide device is shown.
  • this fiber guide conduit particular consideration is made concerning the shape of the fiber guide conduit for the stationary receiving of a bundle of fiber and the conveying of the fibers to the rotating spinning rotor, in addition to the limitation of the distance L.
  • the fiber guide conduit is spread out from a certain position to the outlet of the passage with a taper in range between 5 and 60.
  • a bundle of fibers 1 is supplied to the fiber supply device of the invention from a pair of delivery rollers 2a, 2b.
  • a fiber guide conduit 24 is disposed at a position adjacent to the delivery rollers 2a, 2b, and an end 28 of the fiber guide conduit 24 is connected to an air cavity 26 which is connected to the compressed air source disposed outside of the equipment as shown in the drawing.
  • a circular slit is formed at the outside position of the outlet of the fiber guide conduit 24, and a fiber-separating passage 27 is also connected thereto.
  • the distance L between the nip point of the delivery rollers 2, 2a and the position of the fiber-conveying passage, where the fluid pressure of the airstream is maximum, is set to conform to the above-mentioned condition.
  • a bundle of fibers is shredded into individual fibers separated from each other, and individual fibers are drawn from the bundle of fibers one by one at the fiber-separating passage 27 by the high-speed airstream ejected from the circular slit.
  • the fiber guide conduit 24 is spread out at a certain position to the outlet of it by an angle 9 so as to prevent troubles caused by fiber refuse etc.
  • the cross-sectional area A at the outlet portion of the conduit 24 is larger than that of the cross-sectional area A, of the inlet portion while the fluid speed of the air stream is increased from U to U,
  • the number of conveying fibers is constanti therefore, the intervened space of the fibers in the bundle of fibers is increased, and the individual fibers can be easily drawn from the bundles of fibers one by one without entangling.
  • the preferable angle 6 is in a range between and 60, and if 9 is larger than 60, a certain eddy current is observed in the fiber-separating passage 27 which causes an irregularity of thickness of the yarn.
  • the yarn breakage during the spinning operation is reduced and any accumulation of fibers or other impurities in the fiber guide conduit 24 is completely prevented.
  • the preferable conveying action of the fibers by the above-mentioned guide conduit was observed by using a high-speed movie camera.
  • open-end spinning apparatus having a spinning rotor, a fiber-supply device for supplying separated fibers from a bundle of fibers and for transporting said fibers by a pneumatic flow to said spinning rotor, and means for withdrawing said fibers from said rotor to produce a twisted yarn; an improvement wherein said fiber supply device comprises elements including a fiber guide conduit for receiving said bundle of fibers therethrough, fiber-separating means disposed downstream of said fiber guide conduit for receiving said fibers from said guide conduit, and a fiber supply conduit disposed downstream of said fiber-separating means and in communication with a fiber input to said rotor for coupling said fibers from said separating means to said rotor, said elements being arranged so that the speed of said pneumatic flow is a maximum within said fiber supply device at a distance L downstream of a nip point of said bundle of fibers, said distance L being defined as ALL wherein Z is the average length of said fibers, whereby said fibers are extracted from said bundle of fibers at said point of maximum flow speed,
  • D represents the inside diameter of the upstream extremity portion of said trumpet shape opening in said guide conduit
  • d represents the inside diameter of the downstream extremity of said trumpet-shape opening in said guide conduit
  • m represents the axial length of said trumpet-shape opening.
  • a spinning apparatus comprising a fiber supply device utilizing an airstream for conveying a bundle of fibers supplied from a supply source, while shredding said bundle of fibers into individual fibers; a spinning rotor for accumulating said individual fibers supplied from said fiber supply device upon an inside wall of said rotor while rotating at high speed, said rotor provided with an aperture for taking out yarn produced therein, means for stripping said accumulated fibers from said inside wall of said rotor while rotating said rotor and taking up produced yarn from said rotating rotor through said aperture; an improvement wherein said fiber supply device comprises a fiber guide conduit disposed adjacent to said supply source said fiber guide conduit having a flattened cross section in its upstream portion, fiber-separating means having an upstream inlet disposed to receive fibers from a downstream outlet of said fiber guide conduit, a fiber supply conduit disposed between said fiber-separating means and the inside of said rotor, and means for controlling the speed of said airstream to be at a maximum at a position within said fiber-separating means, said position
  • a spinning apparatus comprising a fiber supply device utilizing an airstream for conveying a bundle of fibers supplied from a supply source, while shredding said bundle of fibers into individual fibers; a spinning rotor for accumulating said individual fibers supplied from said fiber supply device upon an inside wall of said rotor while rotating at high speed, said rotor provided with an aperture for taking out yarn produced therein, means for stripping said accumulated fibers from said inside wall of said rotor while rotating said rotor and taking up produced yarn from said rotating rotor through said aperture; an improvement wherein said fiber supply device comprises a fiber guide conduit disposed adjacent to said supply source, fiber-separating means having an upstreaminlet disposed to receive fibers from a downstream outlet of said fiber guide conduit, wherein a portion of either of said fiber guide conduit and said fiber-separating means is provided with at least a portion having a flattened cross section in the path of said fibers conveyed by said airstream, a fiber supply conduit disposed between said fiber-separating means and the inside of said said fiber
  • a spinning apparatus comprising a fiber supply device utilizing an airstream for conveying a bundle of fibers supplied from a supply source, while shredding said bundle of fibers into individual fibers; a spinning rotor for accumulating said individual fibers supplied from said fiber supply device upon an inside wall of said rotor while rotating at high speed, said rotor provided with an aperture for taking out yarn produced therein, means for stripping said accumulated fibers from said inside wall of said rotor while rotating said rotor and taking up produced yarn from said rotating rotor through said aperture; an improvement wherein said fiber-supply device comprises a fiber guide conduit disposed adjacent to said supply source, fiber-separating means having an upstream inlet disposed to receive fibers from a downstream outlet of said fiber guide conduit, a fiber-supply conduit disposed between said fiberseparating means and the inside of said rotor wherein an inside wall of said fiber supply device is coated with polytetrafluoroethylene resin, and means for controlling the speed of said airstream to be at a maximum at a position within

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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)
US794101*A 1968-01-30 1969-01-27 Fiber supply method and apparatus in an open-end spinning system utilizing airflow and centrifugal force Expired - Lifetime US3604194A (en)

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JP565768U JPS4714181Y1 (nl) 1968-01-30 1968-01-30
JP565868U JPS4839069Y1 (nl) 1968-01-30 1968-01-30
JP1361068 1968-03-04
JP1538868 1968-03-11

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CH (1) CH517839A (nl)
DE (1) DE1904561C3 (nl)
FR (1) FR2000979A1 (nl)
GB (1) GB1242171A (nl)
NL (1) NL153951B (nl)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727270A (en) * 1971-07-20 1973-04-17 Kendall & Co Vacuum drafting of fibrous strands
US3793679A (en) * 1971-07-02 1974-02-26 Kendall & Co Pneumatic drafting of fibrous strands
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3822543A (en) * 1971-07-12 1974-07-09 Toray Industries Spun-like yarn and method of manufacturing same
US3845612A (en) * 1972-02-23 1974-11-05 Platt International Ltd Spinning apparatus
US3930356A (en) * 1970-12-08 1976-01-06 Luwa Ag Method and apparatus for influencing the ambient conditions during open-end spinning
US4050235A (en) * 1975-06-28 1977-09-27 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Spinning rotor for open-end spinning unit
US4078370A (en) * 1975-11-13 1978-03-14 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Rotor for open-end spinning
US4539808A (en) * 1982-03-20 1985-09-10 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in an open-end spinning frame
US4998404A (en) * 1988-12-23 1991-03-12 Savio S.P.A. Method and device for removing deteriorated fibres during yarn rejoining in an open-end spinning machine
US5065572A (en) * 1989-05-18 1991-11-19 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5117622A (en) * 1989-05-18 1992-06-02 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5398494A (en) * 1992-10-14 1995-03-21 W. Schlafhorst Ag & Co. Sliver opening device for separating out impurities and feeding fiber to an open end spring machine
US5694759A (en) * 1996-03-08 1997-12-09 Waverly Mills, Inc. Process for producing polyester yarns on an open end spinning machine and yarns thus produced
US20240026577A1 (en) * 2020-12-09 2024-01-25 Saurer Intelligent Technology AG Spinning element of an air-jet spinning nozzle for an air-jet spinning machine

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CS151696B1 (nl) * 1970-01-19 1973-11-19
US5367747A (en) * 1992-12-31 1994-11-29 Zellweger Uster, Inc. Needle-based apparatus for individualizing fibers and other textile entities for testing purposes
EP0604875B1 (en) * 1992-12-31 1999-04-21 Zellweger Uster, Inc. Continious two dimensional monitoring of thin webs of textile materials
DE102020108257A1 (de) 2020-03-25 2021-09-30 Saurer Spinning Solutions Gmbh & Co. Kg Vorrichtung zur Faservereinzelung und Spinneinrichtung umfassend eine solche Vorrichtung

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Publication number Priority date Publication date Assignee Title
US2773282A (en) * 1950-01-17 1956-12-11 Backer Stanley Method of and apparatus for spinning yarns
US3115001A (en) * 1962-09-18 1963-12-24 Vyzk Ustav Bavinarsky Spinning apparatus
NL6711373A (nl) * 1966-08-18 1968-02-19

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773282A (en) * 1950-01-17 1956-12-11 Backer Stanley Method of and apparatus for spinning yarns
US3115001A (en) * 1962-09-18 1963-12-24 Vyzk Ustav Bavinarsky Spinning apparatus
NL6711373A (nl) * 1966-08-18 1968-02-19

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930356A (en) * 1970-12-08 1976-01-06 Luwa Ag Method and apparatus for influencing the ambient conditions during open-end spinning
US3812667A (en) * 1971-03-05 1974-05-28 Vyzk Ustav Bavlnarsky Ringless spinning of separated staple fibres
US3793679A (en) * 1971-07-02 1974-02-26 Kendall & Co Pneumatic drafting of fibrous strands
US3822543A (en) * 1971-07-12 1974-07-09 Toray Industries Spun-like yarn and method of manufacturing same
US3727270A (en) * 1971-07-20 1973-04-17 Kendall & Co Vacuum drafting of fibrous strands
US3845612A (en) * 1972-02-23 1974-11-05 Platt International Ltd Spinning apparatus
US4050235A (en) * 1975-06-28 1977-09-27 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Spinning rotor for open-end spinning unit
US4078370A (en) * 1975-11-13 1978-03-14 Fried. Krupp Gesellschaft Mit Beschrankter Haftung Rotor for open-end spinning
US4539808A (en) * 1982-03-20 1985-09-10 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Fiber control apparatus in an open-end spinning frame
US4998404A (en) * 1988-12-23 1991-03-12 Savio S.P.A. Method and device for removing deteriorated fibres during yarn rejoining in an open-end spinning machine
US5065572A (en) * 1989-05-18 1991-11-19 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5117622A (en) * 1989-05-18 1992-06-02 Hans Stahlecker Fiber supply arrangement for open-end rotor spinning
US5398494A (en) * 1992-10-14 1995-03-21 W. Schlafhorst Ag & Co. Sliver opening device for separating out impurities and feeding fiber to an open end spring machine
US5694759A (en) * 1996-03-08 1997-12-09 Waverly Mills, Inc. Process for producing polyester yarns on an open end spinning machine and yarns thus produced
US5699659A (en) * 1996-03-08 1997-12-23 Waverly Mills, Inc. Process for producing substantially all-polyester yarns from fine denier feed fibers on an open end spinning machine
US20240026577A1 (en) * 2020-12-09 2024-01-25 Saurer Intelligent Technology AG Spinning element of an air-jet spinning nozzle for an air-jet spinning machine

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CH517839A (de) 1972-01-15
GB1242171A (en) 1971-08-11
DE1904561C3 (de) 1979-09-13
DE1904561A1 (de) 1969-08-28
FR2000979A1 (nl) 1969-09-19
DE1904561B2 (de) 1979-01-25
NL6901475A (nl) 1969-08-01
NL153951B (nl) 1977-07-15

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