US3501907A - Spun yarn and its doubled yarn - Google Patents

Spun yarn and its doubled yarn Download PDF

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Publication number
US3501907A
US3501907A US691056A US3501907DA US3501907A US 3501907 A US3501907 A US 3501907A US 691056 A US691056 A US 691056A US 3501907D A US3501907D A US 3501907DA US 3501907 A US3501907 A US 3501907A
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United States
Prior art keywords
yarn
fibers
rotor
inside wall
bundle
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Expired - Lifetime
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US691056A
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English (en)
Inventor
Masaaki Tabata
Kozo Susami
Hiroshi Edagawa
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Toray Industries Inc
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Toray Industries Inc
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Publication date
Priority claimed from JP8298166A external-priority patent/JPS4819567B1/ja
Priority claimed from JP4437767A external-priority patent/JPS5344583B1/ja
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    • 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
    • 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
    • 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
    • D01H4/04—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 contact of fibres with a running surface
    • D01H4/08—Rotor spinning, i.e. the running surface being provided by a rotor
    • 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
    • D02G3/26—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre with characteristics dependent on the amount or direction of twist
    • D02G3/28—Doubled, plied, or cabled threads

Definitions

  • An improved spun yarn of the invention is provided with twist configuration characterized by fibers maintained in the respective forms of spiral having uniform pitch and diameter of coils of the respective spirals.
  • the form of spiral of fibers in an inner layer with respect to an axis of the yarn is provided with a smaller number of coils of spiral and smaller diameter of the spiral while the form of spiral of fibers in an outer layer with respect to the yarn axis provided with larger number of coils of spiral and larger dameter of the coils of the spiral, further the respective spiral of fibers in the inner and outer layer is provided with almost uniform diameter with respect to the axis of yarn.
  • An improved blended yarn provided with the above-mentioned twist configuration is also disclosed. Further a process for manufacturing the abovementioned blended yarn is also disclosed.
  • the present invention relates to an improved spun yarn having novel configuration of twist and superior mechanical properties such as excellent resiliency and soft feeling of touch, and also the method for manufacturing the same.
  • twisting in the spinning operation is an inevitable operation for forming yarn made from a fleece comprising a plurality of fibers which are continuously gathered and aligned along their lengthwise direction to bestow the strength of the yarn.
  • the twisting of yarn by the ring spinning frame, flyer spinning frame, are also well-known arts.
  • These conventional twisting methods twist the yarn in the same way, that is, one end of the bundle of fibers is fixed while the other end of the bundle of fibers is turned continuously by the rotation of the package of twisted yarn.
  • the fibers of the fiber strand before twisting can be maintained in the twisting operation and the relative positions of each fiber in the fiber strand do not change even after the twisting operation, the fibers are occupied in the respective layer of the configuration of yarn. Consequently, the projection length of the fiber toward the axis of the yarn varies in accordance with the layer wherein the fiber is occupied, in other words, the projection length of the fiber disposed in the outer layer of the yarn is shorter than that of the fiber disposed in the inner layer of the yarn. In fact, it cannot be considered that the fibers are stretched to form the abovementioned configuration of yarn while the twisting operation is being performed.
  • the principal object of the present invention is to provide improved spun yarn having soft feeling of touch and sufiicient resiliency and the process for manufacturing the same.
  • Another object of the invention is to provide a possibility for producing fabric having superior handling quality suitable as a material for making clothes by the improved spun yarn according to the present invention.
  • a further object of the invention is to provide an improved blended yarn having uniform blending of fibers and superior bulkiness, and a process for manufacturing the same.
  • a still further object of the invention is to provide a doubled yarn comprising a plurality of single yarns having a novel configuration of fibers and a process for manufacturing it.
  • FIG. 1 is a skeleton sketch of an embodiment of the spinning device for manufacturing the yarn of the invention
  • FIG. 2 is an explanatory drawing of the twisting mechanism of the spinning device shown in FIG. 1,
  • FIG. 3 is an enlarged side view of an embodiment of the spun yarn produced by the spinning device shown in FIG. 1,
  • FIGS. 4A, 4B and 4C are explanatory drawings showing the shapes of the fibers in the conventional yarn and the yarns of the present invention, respectively.
  • FIG. 5 is an explanatory diagram showing the bending moment of yarn
  • FIG. 6 is a diagram showing the relation between the residual strength of yarn and the rate of back twist for the conventional spun yarn and the yarn of the present invention
  • FIG. 7 is a skeleton sketch of another embodiment of the spinning device for manufacturing the yarn of the invention.
  • FIGS. 8A, 8B and 8C are several embodiments of the spinning device for producing blended yarn having the configuration of fibers shown in FIGS. 3B and 3C,
  • FIG. 9 is an enlarged cross sectional view of the blended yarn produced by the spinning device shown in FIG.
  • FIG. 10 is an explanatory drawing for showing an embodiment of the apparatus for manufacturing the doubled yarn having the novel configuration of yarns without migration.
  • the yarn must have a novel configuration without migration.
  • Such yarn can be manufactured by the spinning device shown in FIG. 1.
  • the twisting mechanism of the spinning device shown in 'FIG. 1 differs completely from that of the conventional twisting mechanism, that is, one end of the bundle of fibers is turned while the other end of the bundle of fibers does not receive restriction during the twisting operation.
  • a detailed illustration of the above-mentioned twisting mechanism and its operation are as follows:
  • the bundle of fibers 1 is supplied successively from a draft device comprising a trumpet 2, a pair of back rollers 3, 3', a pair of middle rollers 4, 4', and a pair of front rollers 5, 5', and the supplied bundle of fibers is sucked into a guide inlet 7 of a supply device 8 wherein sucking force is caused by compressed air supplied from a supply front rollers 5, 5', and fed to a rotor through the delivery pipe 9 of the supply device 8 by the air stream feeding means.
  • the outlet portion of the delivery pipe 9 points toward the inside wall of the rotor 10 as shown in FIGS. 1 and 2.
  • the rotor 10 is formed in a pot-like shape and is supported by a vertical cylindrical axis 13 supported by a machine frame 11 through a bearing 12 and is rotated at a high rotating speed by means of the driving belt 16.
  • the liberated or loosened fibers are ejected against the inside wall of the rotor 10, deposited successively upon it by the centrifugal force and air stream, consequently, the deposited fibers on the inside wall of the rotor 10 are rotated at a high rotating speed together with the rotor 10 on whose wall they adhere.
  • the liberated fibers thus deposited upon the inside wall of the rotor 10 are collected to form a bundle of yarn and twisted in a form of a complete spinning yarn 15 and taken up into a drum (not shown) by a pair of take-up rollers 19.
  • theliberated fibers 1' adhere to the inside wall of the rotor 10 by means of the centrifugal force and are accumulated successively, whereby self-doubling effect is caused to the bundle of fibers taken up from the inside Wall of the rotor 10.
  • the word self-doubling effect is explained as follows. Generally, in the spinning operation, the uneven thickness of the products such as sliver or roving is decreased by so-called doubling of a plurality of the products during the drafting operation.
  • This effect is called doubling effect, however in the present case, only the liberated fibers successively fed from the delivery pipe 9 are doub ed by means of the accumulation upon the inside wall of the rotor 10 in a similar manner as cutting a pack of cards, in the other words, the supplied bundle of fibers 6 is liberated into numerous individual fibers and doubled successively by the above-mentioned manner, consequently, the uneven thickness of the supplied bundle of fibers 6 can be reduced remarkably.
  • the abovementioned effect is hereinafter called self-doubling effect.
  • the fiber bundle taken from the inside wall of the rotor 10 is positively turned at the position the bundle of fibers is removed from the inside wall of the rotor while each fiber of the fiber bundle does not receive restriction to change them in the relative aligned position of fibers because the fiber bundle is accumulated upon the inside wall of the rotor 10 by the centrifugal force.
  • the liberated fibers supplied from the pipe 9 to the inside wall of the rotor 10 are accumulated in a uniform condition of alignment upon the inside wall of the rotor 10 while being provided with the selfioubling effect.
  • the inside radius of the rotor is R in meter
  • number of revolutions of the rotor is M r.p.m.
  • the surface speed of the inside wall of :he rotor 10 is V meter per min.
  • taking-off speed of the nundle of fibers from the inside wall of the rotor 10 is W neter per min.
  • an arbitrary point on the inside wall of :he rotor is designated as point P
  • the bundle of fibers s taken-off from the inside wall of the rotor 10 at the Josition designated by point P at the time function t T, :he taking-off point on the inside wall of the rotor 10 :rave's along the inside wall of the rotor 10 at a speed )f W meter per min.
  • the liberated fibers are coninuously blown to the inside wall of the rotor 10 while ravelling the taking off point travels along the inside Wall )f the rotor, it can be considered that the liberated fibers tre blown V/W times upon the position designated by the aking-otf point P until the taking-off point returns to the )riginal point P.
  • the drafted roving in the libera ed condition is self-doubled by V/ W.
  • the above-mentioned doubling operation is performed at any position in the inside wall of the rotor.
  • the fibers accumulated on the inside wall of the rotor only maintain their relative positions as a unit of the bundle of fibers chiefly by the centrifugal force, further the taking off points of the bundie of fibers from the inside wall of the rotor 10 are not fixed at one taking off point P. Consequently, no migration takes place during the twisting operation according to the above-mentioned embodiment of the invention, and a spun yarn having uniform thickness due to the selfdoubling effect of the rotor 10 can be manufactured.
  • the force restricting the free turning of the bundle of fibers is mainly the frictional force between the bundle of fibers and the inside wall of the rotor 10.
  • the abovementioned frictional force may be defined by the product of centrifugal force working on the bundle of fibers by coefficient. of friction between the bundle of fibers and the inside wall of the rotor 10.
  • the preferable coefficient of friction between the bundle of fibers and the inside wall of the rotor 10 is in a range from 0.2 to 0.7.
  • the abovementioned coefficient of friction was measured by the wellknown Roder method at a linear speed of 50 meters per minute.
  • the metallic inside wall of the rotor provided having a roughened plated surface is suitable for obtaining the above-mentioned preferable condition.
  • each fiber is formed with a plurality of spirals or helices aligned along its lengthwise direction and each spiral is provided with almost uniform shape.
  • the inner layer of the yarn is defined as that position of the fiber which is closer to the axis of the yarn with respect to the cross-section of the yarn, and vice versa.
  • the fiber positioned closer to the longitudinal axis of the yarn is considered as the fiber positioned at the inner layer of the yarn while the fiber positioned at a longer distance from the longitudinal axis of the yarn is considered as the fiber positioned at the outer layer of the yarn.
  • the term of the difference in number of spiral coils means that the fibers of the yarn have different spiral turns or different fiber pitch. All cases of changing spiral of fibers may be considered, in other words, the continuous changing of fiber spiral or discontinuous changing of fiber spiral from the outer layer to the inner layer may be considered.
  • the number of spiral coils of the fibers in the outer layer of yarn is larger than that of fibers in the inner layer of yarn.
  • FIGS. 4A, 4B and 4C The shape of two fibers contained in the conventional yarn and the yarns of the present invention are shown in FIGS. 4A, 4B and 4C, wherein projections of two fibers to a plane parallel to the yarn axis are shown, respectively.
  • a, c and e represent each fiber in the outer layer of the respective yarns while b, d and 1 represent each fiber in the inner layer of the respective yarns.
  • the pitch of the coil is smaller, in other words the larger the number of coils, the smaller the resilience to the bending deformation is.
  • the yarn of the present invention has a particular twist configuration wherein the number of coils of spiral of the fiber in the outer layer of the yarn is larger while that of the fiber in the inner layer of the yarn is smaller, in other words, the fiber in the outer layer of the yarn has a weaker resistance to the bending deformation while the fiber in the inner layer of yarn has a stronger resistance. Consequently, it is clearly understood that the yarn having a twist configuration composed of fibers such as a and [2 shown in FIG.
  • FIGS. 4A has a stronger resistance to the bending deformation than the yarn having a twist configuration composed of fibers such as c and d, e and f shown in FIGS. 48 and 4C, respectively.
  • Concerning the torsional deformation the yarn of the invention is easier to twist than the conventional yarn by the same reason as mentioned above. Therefore, the yarn of the invention shown in FIGS. 4B and 4C is softer than the conventional yarn shown in FIG. 4A.
  • the interference of the fibers in the inner layer or group to the fibers in the outer layer or group is very small, in other words, the fibers in the inner layer and the outer layer of the yarn can be deformed independently from each other.
  • the inner and outer layers of fibers have their respective helical convolutions irregularly and randomly positioned with respect to each other, or, in other words, the convolutions are out of phase with each other as seen in FIGS. 3, 4B and 4C. Consequently, the frictional resistance between the fibers in the inner layer and the outer layer can be considered as being very small.
  • EXAMPLE 1 A small amount of fibers dyed in black color was blended when spinning a yarn of polyester staple fiber and the yarn manufactured by the method shown in FIG. 1. p
  • the rotation speed of the rotor was 31,000 rpm, and the above-mentioned coetficient of friction measured by the Roder method was 0.46.
  • the yarn produced was mounted with a tricresylphosphate liquid, then the yarn was observed with a microscope by means of inserting sensitive filter (530 mp.) to a polarized light microscope with crossed-nicol. It was found from this test that there was no migration.
  • the distance between points A and B is represented by F which is considered as a frictional force at the time of bending deformation of the test piece in a sheet form. Then the value of F 6 5 is calculated, and it is considered that the resilience of the test piece in a sheet form is larger if the value of F C" D is smaller.
  • the bulkiness of the test piece was measured with the conventional instrument for measuring thickness of the test piece continuously under a changing load.
  • the original thickness of the test piece was measured under a load condition of 2 g./cm. and the specific volume of the test piece was calculated.
  • the yarn of the invention is more bulky than the conventional yarn.
  • the yarn of the present invention has a novel configuration of yarn wherein there is no migration and each fiber contained in the yarn is provided with a plurality of coils of spiral with almost uniform diameter with respect to the yarn axis. Consequently, when the yarn of the present invention is untwisted the yarn can maintain its configuration of yarn but in case of the conventional yarn, the yarn loses its twisted configuration by untwisting and then loses the strength of yarn.
  • FIG. 6 the relation between the residual strength of yarn and the rate of back twist of both yarns are shown in FIG. 6 wherein curve b represents the case of the convenzional yarn while curve a represents the case of the present .nvention.
  • the residual strength )f the yarn at the rate of back twist of 100% is still more :han nill and the residual strength of the yarn at the rate )f back twist of 75% is more than 30% of the original rtrength.
  • it is imiossible to impart to the spun yarn of the invention a 10 twist configuration, consequently, it is clearly under- ;tood that the spiral configuration of fibers in the outer ayer and the inner layer of the yarn is not uniform.
  • the residual strength )f the yarn, and the rate of the back twist are defined as follows:
  • a draft element comprises 1 pair of back rollers 22, 22, a pair of apron rollers 23, 23', a pair of draft rollers 24, 24', and further a pair of front rollers 25, 25'.
  • a twisting and winding device of the ring-traveller :ystem is installed.
  • a roving 21 is supplied to the draft :lement through the back rollers 22 and 22, and then he supplied roving is drafted and is provided with twist luring the winding operation, During the above-mentioned :pinning, twisting and winding operations, a spun yarn Z8 is supplied to the draft rollers 24, 24', and guide 'oller 26.
  • the roller gauge g between the lip point of the front rollers 25 and 25' and the draft "ollers 24 and 24 is fixed slightly longer than the maxinum length of the fiber contained in the roving 21.
  • the number of twists of the supplied yarn 28 s the same as that of the spun yarn produced by the present method while the direction of the twist of the ;upplied yarn is opposite that of the spun yarn produced )y the present method.
  • the fibers in the supplied spun yarn 28 are atretched at the stretch zone between the rollers 25, 25' 1nd the rollers 24, 24, next the elongation of the stretched zarn is recovered elastically the instant the yarn 28 is lelivered from the front rollers 25, 25 and untwisted.
  • the stretch ratio between the stretch zone is preferably from 1.10 to 1.15 in accordance with the elongation [almost 2%) of the supplied yarn 28 caused by the mtwisting.
  • the product of the present device comprises a bundle of fibers without spiral at the core por- :ion of the product and spiraled fibers from the roving :overing the core portion of the product.
  • one of the features required in the blended ⁇ 3H1 is uniform condition of the blending fibers.
  • some lesirable mechanical properties such as soft feeling of :ouch and sufficient resiliency of the blended yarn, etc., are always required.
  • the spun yarn of the invention has a particular configuration without migration, the above-mentioned preferable mechanical properties can be acquired by the configuration of the yarn of the invention.
  • very superior blending effect which was not obtained by the conventional spinning method can be obtained by the self-doubling effect of the rotating rotor of the spinning device shown in FIG. 1.
  • FIGS. 8A, 8B and 8C Some embodiments of the manufactured blended spun yarn according to the present invention are shown in FIGS. 8A, 8B and 8C. These manufacturing methods are characterized by the process comprising liberating a plurality kinds of bundled fibers in a fluid stream, carrying the liberated fibers to the inside wall of a rotor through a delivery pipe or the respective delivery pipes, accumulating the supplied liberated fibers of a plurality kinds of fibers upon the inside wall of the rotor continuously by its centrifugal force and the air stream, removing the accumulated bundle of blended fibers from the inside wall of the rotor while twisting, removing the twisted bundle of blended fibers through an aperture disposed to the central bottom portion of the rotor and winding to a suitable drum.
  • the term plurality kinds of fibers means different kinds of fibers in staple form or fibers having different fineness or cut length, or different mechanical properties or different colors.
  • single roving 31, a blend of two different fibers is supplied to the draft element, while in FIG. 8B two rovings 31 and 31' comprising the respective fibers which differ from each other are supplied to the draft element in the doubled condition and the liberated different fibers in the double rovings are carried to the inside surface of the rotating rotor 40 through a single delivery pipe 39.
  • two rovings 31 and 31' comprising the respective fibers which differ from each other are supplied to the respective draft element separately, and the respective liberated fibers are supplied to the inside surface of the same rotor 40 through the respective delivery pipes 39 and 39' separately.
  • the number of the above-mentioned doubling can be calculated as V/ W.
  • the bundle of fibers taken from the inside wall of the rotor 40 contains two kinds of fibers comprising a plurality of fibers represented by the following equation (N +N')/D U/ W, the perfect blending condition similar to the doubling of V/ W bundles of fibers can be expected.
  • the blended yarn has novel configuration without migration, consequently the blended yarn having superior mechanical properties such as 2 soft hand feeling, high bulkiness, strong resiliency, etc., can be obtained.
  • the mechanism of the spinning device shown in FIGS. 8A, 8B and 8C are almost the same as that shown in FIG.
  • the spinning material is supplied to the back rollers 35, 35' and drafted by the draft zone comprising the back rollers 35 and 35', middle rollers 36 and 36 apron 36" and front rollers 37 and 37', then the drafted bundle of fibers is sucked into the delivery pipe 39 or 39, and carried to the rotating rotor 40 in the liberated condition by the air stream, and the accumulated bundle of fibers is taken off from the inside wall of the rotor 40 and carried to the outside of the rotating rotor through a bottom aperture disposed to the central hollow shaft 40' of the rotor 40 during the twisting operation, and the manufactured blended yarn 44 is wound on a drum (not shown) by a conventional winding means.
  • EXAMPLE 3 A double roving comprising a roving dyed in black color and a roving without dyeing was supplied to the spinning device as shown in FIG. 8B and a blended yarn of so-called pepper and salt color was produced.
  • the spinning condition of the yarn was as shown in the following table.
  • the blended yarn having satisfactory blending of fibers can be easily manufactured by the method of the invention in spite of the very short-cut spinning system whose blending effect is superior to the blending effect in the conventional spinning system wherein the doubling number corresponds to V/ W.
  • the principle of the blending of the present invention may be applied to the so-called direct spinning system, that is, two kinds of tows are supplied to the draft-cut device of the respective direct spinning equipment separately, next the bundles of fibers produced by the draft-cut device are supplied to a pair of front rollers corresponding to the front rollers shown in FIG. 8A or 8B or 80, separately or in a doubled condition, then fed to the twisting device in the same way as shown in FIGS. 8A or 8B or 80.
  • the conventional doubled yarn such as two ply or three ply yarn, comprises a plurality of single yarns having a configuration or migration. Further, these doubled yarns are always twisted. Consequently, the feeling by hand is rather hard in comparison with the single yarn. However, a doubled yarn having a soft hand feeling, superior resiliency and high bulkiness can be produced by using the yarn of the present invention. Further, the processes for manufacturing the double yarn can be reduced, in other words, the rewinding process and the twisting process of the conventional method can be omitted, consequently, some defects of the double yarn such as pilling or roughening of the surface yarn caused by the rewinding or twisting operation can be eliminated by the method of the present invention.
  • an embodiment of the equipment for producing double yarn of the invention comprises a pair of spinning devices and a device for doubling and twisting the products of the two spinning devices continuously.
  • Each spinning device comprises a trumpet 50, a pair of back rollers 51, 51', a pair of middle rollers 52 and 52', a pair of front rollers 53 and 53', and further a twisting device comprising a rotor 56 and a supply member 55 for supplying the product 54 delivered from the front rollers 53 and 53 to the rotor 56.
  • the spinning operation of each spinning device is performed in the same manner as explained in the first embodiment shown in FIGS. 1 and 2.
  • the twisted products 58 and 58' are taken from the aperture of the respective rotors 56, 56 by the respective take up rollers 57, 57', then combined by a yarn guide 59, and next twisted by a conventional ring twister while the product 62 is winding around a bobbin 61.
  • the ring twister comprises a spindle 65, ring 63, traveller 64, balloon control rings 67 and 67, and a snail wire 60.
  • double yarn comprising more than three single yarns can be produced by the same principle, and further many kinds of doubled yarns having a particular configuration can be produced by combinations of the rotors rotating in different directions or rotating at different speeds.
  • a spun yarn having an improved twist configuration comprising: an outer and an inner group of concentrically and helically twisted fibers, the outer group of fibers having a larger fiber pitch and a larger fiber helical diameter than the fibers constituting the inner group, said outer and inner groups of fibers having their respective helical convolutions irregularly and randomly positioned with respect to each other, and the fibers constituting both said inner and outer groups having, respectively, uniform helical diameters along the longitudinal yarn axis.
  • a spun yarn according to claim 1 wherein said yarn has a residual breaking strength greater than zero after 100% back-twisting and a residual breaking strength of at least 30% after back-twisting where the degree of back-twisting is represented by,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US691056A 1966-12-20 1967-12-15 Spun yarn and its doubled yarn Expired - Lifetime US3501907A (en)

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JP8298166A JPS4819567B1 (enExample) 1966-12-20 1966-12-20
JP4437767A JPS5344583B1 (enExample) 1967-07-12 1967-07-12

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US00888093A Expired - Lifetime US3768246A (en) 1966-12-20 1969-12-24 Spun yarn and its doubled yarn and the process for manufacturing the same

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CH (1) CH480461A (enExample)
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660973A (en) * 1968-09-30 1972-05-09 Toray Industries Spun yarn and a method for manufacturing the same
US3688487A (en) * 1969-06-11 1972-09-05 Agency Ind Science Techn Method and apparatus for spinning flying fibers into a twisted yarn
US3712042A (en) * 1969-09-16 1973-01-23 Vyzk Ustav Bavlnarsky Method of withdrawing fibers from a combing roller of a fiber separating device and device for performing said method
US4698962A (en) * 1985-10-16 1987-10-13 Schubert & Salzer Process and device for the production of a fancy yarn on open-end spinning devices
US5163205A (en) * 1991-08-29 1992-11-17 Niederer Kurt W Belted rotary drafting device for staple fibers and method
CN111996625A (zh) * 2020-08-29 2020-11-27 河南交通职业技术学院 导板式玄武岩纤维合股机
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
US12139824B2 (en) 2022-06-03 2024-11-12 Saurer Spinning Solutions Gmbh & Co. Kg Thread draw-off nozzle and open-end spinning device having a thread draw-off nozzle
US12195885B2 (en) 2020-12-14 2025-01-14 Saurer Spinning Solutions Gmbh & Co. Kg Multifunctional nozzle for a spinning machine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207903C2 (de) * 1971-02-23 1981-11-12 VEB Spinnereimaschinenbau Karl-Marx-Stadt, DDR 9048 Karl-Marx-Stadt Offen-End-Spinnvorrichtung
DE3120877C3 (de) * 1981-05-26 1995-12-07 Fritz Stahlecker Verfahren zum Zuführen von vereinzelten Fasern zu einem Spinnrotor und Vorrichtung zum Durchführen des Verfahrens
US4698956A (en) * 1986-05-29 1987-10-13 Gentex Corporation Composite yarn and method for making the same
DE4336109C2 (de) * 1993-10-22 1996-03-14 Palitex Project Co Gmbh Verfahren und Vorrichtung zur Herstellung eines Zwirns
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
DE19727176C1 (de) * 1997-06-26 1998-11-12 Volkmann Gmbh & Co Verfahren zur kontinuierlichen Herstellung eines Zwirnes mit geringer Kringelneigung
CN109778378A (zh) * 2019-01-28 2019-05-21 百隆东方股份有限公司 一种涡流纺段彩包芯纱的纺制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT181800B (de) * 1949-11-23 1955-04-25 Julius Meimberg Verfahren zum Verspinnen von Garn und Vorrichtung zur Durchführung Verfahrens
US2817947A (en) * 1953-09-10 1957-12-31 Peter M Strang Preparation of textile strands comprising fibres having different characteristics
US2911783A (en) * 1959-11-10 Process and apparatus for spinning a yarn
US3177642A (en) * 1963-01-25 1965-04-13 Korikovsky Pio Konstantinovich Combined spinning and twisting frame and method for producing twisted yarn

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1743601A (en) * 1926-04-03 1930-01-14 Gross Willy Spinning machine
DE489538C (de) * 1926-11-09 1930-03-21 Willy Gross Spinnvorrichtung fuer durch Luftstrom zugefuehrte Fasern
DE1056018B (de) * 1955-12-16 1959-04-23 Konrad Goetzfried Verfahren und Vorrichtung zum pneumatischen Spinnen eines Fadens
BE632762A (enExample) * 1962-05-25
AT268942B (de) * 1965-09-11 1969-02-25 Vyzk Ustav Bavlnarsky Verfahren zum Verspinnen von textilen Stapelfasern in einer Spinnkammer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911783A (en) * 1959-11-10 Process and apparatus for spinning a yarn
AT181800B (de) * 1949-11-23 1955-04-25 Julius Meimberg Verfahren zum Verspinnen von Garn und Vorrichtung zur Durchführung Verfahrens
US2817947A (en) * 1953-09-10 1957-12-31 Peter M Strang Preparation of textile strands comprising fibres having different characteristics
US3177642A (en) * 1963-01-25 1965-04-13 Korikovsky Pio Konstantinovich Combined spinning and twisting frame and method for producing twisted yarn

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660973A (en) * 1968-09-30 1972-05-09 Toray Industries Spun yarn and a method for manufacturing the same
US3688487A (en) * 1969-06-11 1972-09-05 Agency Ind Science Techn Method and apparatus for spinning flying fibers into a twisted yarn
US3712042A (en) * 1969-09-16 1973-01-23 Vyzk Ustav Bavlnarsky Method of withdrawing fibers from a combing roller of a fiber separating device and device for performing said method
US4698962A (en) * 1985-10-16 1987-10-13 Schubert & Salzer Process and device for the production of a fancy yarn on open-end spinning devices
US5163205A (en) * 1991-08-29 1992-11-17 Niederer Kurt W Belted rotary drafting device for staple fibers and method
CN111996625A (zh) * 2020-08-29 2020-11-27 河南交通职业技术学院 导板式玄武岩纤维合股机
CN111996625B (zh) * 2020-08-29 2021-10-29 河南交通职业技术学院 导板式玄武岩纤维合股机
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
US12195885B2 (en) 2020-12-14 2025-01-14 Saurer Spinning Solutions Gmbh & Co. Kg Multifunctional nozzle for a spinning machine
US12139824B2 (en) 2022-06-03 2024-11-12 Saurer Spinning Solutions Gmbh & Co. Kg Thread draw-off nozzle and open-end spinning device having a thread draw-off nozzle

Also Published As

Publication number Publication date
FR1552320A (enExample) 1969-01-03
DE1710029A1 (de) 1972-02-24
CH480461A (de) 1969-10-31
GB1212874A (en) 1970-11-18
US3768246A (en) 1973-10-30

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