US3342437A - Yarn package - Google Patents

Yarn package Download PDF

Info

Publication number
US3342437A
US3342437A US519335A US51933566A US3342437A US 3342437 A US3342437 A US 3342437A US 519335 A US519335 A US 519335A US 51933566 A US51933566 A US 51933566A US 3342437 A US3342437 A US 3342437A
Authority
US
United States
Prior art keywords
yarn
build
package
wound
layer
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.)
Expired - Lifetime
Application number
US519335A
Other languages
English (en)
Inventor
Massey John
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.)
ICI Fibres Ltd
Original Assignee
ICI Fibres Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB444365A external-priority patent/GB1129453A/en
Application filed by ICI Fibres Ltd filed Critical ICI Fibres Ltd
Application granted granted Critical
Publication of US3342437A publication Critical patent/US3342437A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/02—Spinning or twisting machines in which the product is wound-up continuously ring type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • a yarn package comprises a build of yarn wound on a solid former, as for instance a bobbin or tube.
  • Yarn is often so wound at the termination of a treatment performed on it whilst the yarn is travelling from a supply thereof to the wind-up.
  • Continuous filament yarns of syntheic materials are submitted to the treatment of drawing subsequently to their extrusion from the orifices of a spinneret.
  • they When wound up after this treatment, they are often wound into double taper packages, i.e. yarn packages having cylindrical. or symmetrically rounded middle portions and tapered end-portions.
  • double taper packages particularly when built by a building motion starting with the greatest length of traverse stroke and finishing with the shortest length, are often used as the direct supply for textile machinery, as for instance knitting machines for womens hosiery.
  • the take-oft characteristics are of vital importance.
  • the tension imparted to the yarn by the act of with-drawing it over one end of the package should be as low as possible; and, perhaps even more importantly, it should at least approximate to being uniform throughout the period of withdrawal.
  • tension uniformity is to be considered in two differing aspects. Firstly, the variation of tension from start to finish of unwinding; and, secondly, local tension variations or snatches.
  • the nature of the package build is significant from both the above aspects.
  • the yarn should not have to be withdrawn over a hump or shoulder of the package; and the surface from which the yarn is withdrawing at any given time should be homogeneous.
  • a build in which the traverse stroke is at the maximum length at the start of winding and which reduces gradually to the minim-um at the completion of winding generally meets the above criteria.
  • the formers on which the mass of yarn is wound shall be cylindrical.
  • patterning in the build may occur due to the exact coinci-dence of adjacent coils at certain radii of the build, especially where ring tilt is employed when winding the the package on a ring spindle apparatus.
  • ring tilt say of 3-6 in amount, is usually so employed and serves, inter alia, to enhance the stability of the package.
  • a yarn package comprises continuous filament yarn wound on a cylindrical former 3,342,437 Patented Sept. 19, 1967 with a build having tapered end-portions in which build the innermost layer of yarn is of maximum length and the length of succeeding layers reduces gradually to minimum length at the outermost layer, and in which build the coils of yarn in each layer vary in mean spacing gradually from minimum spacing at the lowermost end of the layer to maximum spacing at the uppermost end, whereby the build has a mid-portion with sides tapering towards the upper end of the package.
  • the yarn is wound in such a manner, erg. by means of ring tilt, that adjacent coils of yarn in each layer overlap one another at one or more points around each coil.
  • the tapering end-portions of the build have frusto-conical (i.e. fiat) surfaces; and the surface of the mid-portion of the build tapering towards the upper end is likewise frusto-conical (i.e. flat).
  • the effect of the variation in helix angle of the coils and hence of the tapering of the mid-portion of the build, eg with a cone angle of 2, is to lower the tension in the yarn withdrawn from the package, especially during the earlier, main period of the withdrawal; and to cause any patterning that might be brought about to be spread over a number of layers, instead of appearing from top to bottom of the mid-portion of the build along one layer.
  • the latter effect which may be beneficial in lowering the already very low incidence of snatches, is due to the fact that patterning occurs at certain radii of the package and the tapering of the mid-portion of the build ensures that such radii will coincide with different thicknesses of the build along the length of that mid-portion.
  • FIGURE 1 is a diagrammatic elevational view, partly in section, of a yarn package according to the invention.
  • FIGURE 2 is a diagrammatic elevational view of a ring spindle apparatus for use in producing a yarn package according to the invention.
  • a yarn package consists of a right cylindrical former 1, for instance a plastics sleeve mounted on a steel core, or an aluminium bobbin, and wound thereon a build of yarn 3.
  • the yarn package has tapered end-portions 9, 11, and a mid-portion which itself tapers inwardly at a small angle, e.g. 2, towards the upper end of the yarn package.
  • the build 3 is made up of layers of yarn, starting with a longest layer 5 next to the surface of the former 1 and finishing with an outermost layer 7 of least axial length.
  • FIGURE 2 depicts a yarn package being wound by a ring spindle apparatus comprising a traversing ring-rail 15 carrying a ring 13 which is angled at 3 to the horizontal, and a bobbin 1 mounted for rotation on an upstanding rotatable spindle (not shown) centrally disposed within the ring.
  • Yarn Y from e.g. the draw roll of a drawtwister is led downwardly through balloon guide 17, and thence through a traveller (not shown) rotatable around ring 13.
  • the yarn is wound into a build 3 in which adjacent coils overlap each other at certain points, due to the ring tilt applied to the ring, and such overlapping imparts extra stability to the build, particularly at the tapered endportions.
  • Yarn packages according to the invention may be produced at the termination of the process of draw-twisting nylon continuous filament yarn, eg of deniers from 15- 100, and of monofilament or multifilament nature.
  • a 4 lb. package i.e. a package containing 4 lb. of yarn
  • the means whereby the tapering of the sides of the build is to be achieved can take any practicable form in which the traverse motion of the traverse guide, e.g. the ring of a drawtwister, is alternately accelerate-d and decelerated in phase with the to and fro, e.g. up and down, movement of the guide.
  • the traverse motion of the traverse guide e.g. the ring of a drawtwister
  • it is necessary to vary the hydraulic speed control valve for the ring-rail motion and this can simply be achieved by a cable drive from the balloon guide traverse (which rises and falls in phase with the package traverse) which drive is adapted to rotate the speed control valve knob.
  • Other types of Rieter and other makers drawtwisters have intrinsic mechanism for accelerating and decelerating the traverse motion.
  • Nylon continuous filament yarn packages according to the invention have take-01f tensions, at least during the main period of the withdrawal, reduced by about compared with similar packages wound without tapered mid-portions.
  • Tapers i.e. cone angles, of up to about 3 are useful; higher than this angle, the package weight falls below what can normally be considered to be economic.
  • cone angle denotes the angle between the axis and the inclined side of the package, that is, one-half the angle at the vertex of the cone.
  • a yarn package comprising continuous filament yarn wound on a cylindrical former with a build having tapered end-portions, in which build the innermost layer of yarn is of maximum length and the length of succeeding layers reduces gradually to a minimum length at the outermost layer, the improvement by which the coils of yarn in each layer of the build vary in mean spacing gradually from minimum spacing at the one end of the layer to maximum spacing at the other end, whereby the build has a mid-portion with sides tapering towards the end of the package where the coils of yarn have a maximum spacing therebetween.
  • a yarn package according to claim 1 in which adjacent coils of each layer overlap one another at one or more points around each coil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US519335A 1965-02-02 1966-01-07 Yarn package Expired - Lifetime US3342437A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB444365A GB1129453A (en) 1965-02-02 1965-02-02 Yarn packages
FR48116A FR1466874A (fr) 1965-02-02 1966-02-02 Perfectionnements aux paquets de fil

Publications (1)

Publication Number Publication Date
US3342437A true US3342437A (en) 1967-09-19

Family

ID=26168315

Family Applications (1)

Application Number Title Priority Date Filing Date
US519335A Expired - Lifetime US3342437A (en) 1965-02-02 1966-01-07 Yarn package

Country Status (2)

Country Link
US (1) US3342437A (fr)
FR (1) FR1466874A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741489A (en) * 1971-03-18 1973-06-26 Toray Eng Co Ltd Bobbin winder, method and yarn package produced thereby
US6929211B1 (en) * 1999-07-22 2005-08-16 Saint-Gobain Vetrotex France S.A. Method of winding yarns to form frustoconical yarn packages

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1214741A (en) * 1915-04-07 1917-02-06 Jacob K Altemus Knitting-yarn package.
US2301711A (en) * 1939-04-06 1942-11-10 Warren A Seem Yarn package and method of producing the same
US2764363A (en) * 1950-09-13 1956-09-25 Stammwitz Eugene Traverse mechanism for spinning, twisting and like frames
GB800555A (en) * 1955-10-19 1958-08-27 British Nylon Spinners Ltd Improvements in or relating to ring-spinning apparatus
GB901411A (en) * 1959-09-26 1962-07-18 Onderzoekings Inst Res Improvements in or relating to twisting machines
US3064922A (en) * 1960-08-10 1962-11-20 Pittsburgh Plate Glass Co Twisted yarn package

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1214741A (en) * 1915-04-07 1917-02-06 Jacob K Altemus Knitting-yarn package.
US2301711A (en) * 1939-04-06 1942-11-10 Warren A Seem Yarn package and method of producing the same
US2764363A (en) * 1950-09-13 1956-09-25 Stammwitz Eugene Traverse mechanism for spinning, twisting and like frames
GB800555A (en) * 1955-10-19 1958-08-27 British Nylon Spinners Ltd Improvements in or relating to ring-spinning apparatus
GB901411A (en) * 1959-09-26 1962-07-18 Onderzoekings Inst Res Improvements in or relating to twisting machines
US3064922A (en) * 1960-08-10 1962-11-20 Pittsburgh Plate Glass Co Twisted yarn package

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741489A (en) * 1971-03-18 1973-06-26 Toray Eng Co Ltd Bobbin winder, method and yarn package produced thereby
US6929211B1 (en) * 1999-07-22 2005-08-16 Saint-Gobain Vetrotex France S.A. Method of winding yarns to form frustoconical yarn packages

Also Published As

Publication number Publication date
FR1466874A (fr) 1967-01-20

Similar Documents

Publication Publication Date Title
US2647697A (en) Tandem chuck wind-up
US4471917A (en) Balloon-control guide and yarn rewinding process
US3310248A (en) Yarn package winding method
US3388545A (en) Core yarns and a process and apparatus assembly for making them
US3342437A (en) Yarn package
US3041663A (en) Method and apparatus for forming fibers
US5731084A (en) Zero twist yarn having periodic flat spots
CN100384709C (zh) 制造交叉卷绕筒子的方法
US2200388A (en) Traverse mechanism for yarnwinding machines
US3161913A (en) Yarn relaxing apparatus
US2946526A (en) Continuous method for winding up yarns
US3334842A (en) Yarn package
US3205645A (en) Spinning pot of centrifugal spinning machine
US3415048A (en) Process for producing alternating twist
US6929211B1 (en) Method of winding yarns to form frustoconical yarn packages
US3373945A (en) Winding of yarn
US3032960A (en) Device for coiling twined threads
US2301711A (en) Yarn package and method of producing the same
US3466864A (en) Twisting fibrous strands
US3423922A (en) Twisting fibrous strands
US5839678A (en) Method of controlling flat spots in a zero twist yarn
US2947136A (en) Twisting of continuous filament yarns
US3315904A (en) Winding yarn
US3665696A (en) Yarn packaging
US3277640A (en) Pretwisting apparatus for continuous filament yarns