US2980362A - Thread package wound from continuous filaments of a synthetic linear polymer - Google Patents

Thread package wound from continuous filaments of a synthetic linear polymer Download PDF

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Publication number
US2980362A
US2980362A US569852A US56985256A US2980362A US 2980362 A US2980362 A US 2980362A US 569852 A US569852 A US 569852A US 56985256 A US56985256 A US 56985256A US 2980362 A US2980362 A US 2980362A
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US
United States
Prior art keywords
filaments
package
wound
bobbin
yarn
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
US569852A
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English (en)
Inventor
Goddard Sidney
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.)
British Nylon Spinners Ltd
Original Assignee
British Nylon Spinners 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
Application filed by British Nylon Spinners Ltd filed Critical British Nylon Spinners Ltd
Application granted granted Critical
Publication of US2980362A publication Critical patent/US2980362A/en
Anticipated expiration legal-status Critical
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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
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/28—Driving or stopping arrangements for two or more machine elements possessing different characteristics but in operative association
    • D01H1/30—Driving or stopping arrangements for two or more machine elements possessing different characteristics but in operative association with two or more speeds; with variable-speed arrangements
    • D01H1/305—Speed control of the spindles in response to the displacements of the ring rail

Definitions

  • the present invention relates to thread packages wound on bobbins from drawn continuous filaments of a synthetic linear high polymeric substance showing visco-elastic properties, such as nylon. That is to say the inventionis concerned with the shape and formation on a bobbin of the mass of such drawn filaments.
  • These filaments although capable of being stretched somewhat and resuming their original length, only do so over a period of time, rather than more or less instantaneously, and, after the drawing operation in whichthey are produced, they relax slowly from the length to which they have been stretched, to a length slightly, but significantly,'less than the former length.
  • filaments are traversed axially of the bobbin by means such as a traveller revolving within the ring of a reciprocating ring-rail, and the movements of the traverse mechanism during the time of winding govern the shape of the wound package on the bobbin.
  • a traveller revolving within the ring of a reciprocating ring-rail
  • the movements of the traverse mechanism during the time of winding govern the shape of the wound package on the bobbin.
  • such filaments are wound into cylindrical packages or into packages with a tapering extremity or extremities, depending on what further processes are to be performed on the filaments.
  • This phenomenon of the differing physical characteristics of the filaments in difierent parts of the wound package can be sufficient to prejudice the acceptance of such filaments in certain uses. For instance, the differences in relaxation brought about by the phenomenon may be most undesirable.
  • Such length of filament is comparatively short, and is such that, when the filament is pirned directly from the bobbin and used as weft in a woven fabric, the difierences in the physical characteristics of parts of it give rise to visible differences in lustre in the fabric, due to difierential relaxation, which take the form of intermittent lines or bars, where the fabric is tighter than at other parts, known as weft barre.
  • the insertion of a fairly high degree of twist before pirning will reduce this elfect, but such high twist is not always desired in weft yarns and in any case, it demands that an extra operation be performed.
  • the taper angle of the package is defined as the angle between a plane at a point on anend-portion tangential to, or lying along, the surface of the end-portion F at the base thereof.
  • Yarn Y is wound .on the cylindrical portion of the bobbin between the flange and a point below the cap C of the bobbin, the upper end of the package being tapered at T,
  • the figure shows how the traverse varies throughout-the winding, the upper limit a of the traverse stroke varying between a andfiaccording be experienced in unwinding, even supposing that it is a P s ib a ca h x mum per.
  • the rate of traversing may be nonunifcn'rnithro ughout a'strolejfor instance, the traverse may be accelerated at the points of reversaljof direction.
  • a Should it befdesired to'use a compressible sleeve, it may be ofthe order of 30 thousandthsof antinch to 200 thousandths of an inch thick, and it must not: be' too easily compressed by the strong filamentstnors'o hard that the filaments make littleimpression on it, or :it will not have the desired eifect.
  • Example 2 Qontiniious filamentsliof ,denier ayie multifi'lament yarn, with ,a twist of am; per inch a 4 or ie e'wq o after the spun-filaments hadlheendraw
  • the same yarn as in Example 1 was drawn at a ratio of 4.8 and at a speed of 425 ft./min. and wound up at a spindle speed of 5,100 r.p.m.
  • the traverse stroke increased uniformly, as in the previous example, from an initial length of inches to a length of 7 /2 inches, during which time a package weighing 1 lb. was produced having a taper angle of 17 for the conical nose portion.
  • Example 3 45 denier nylon continuous filament yarn was drawn at a ratio of 3.31 and at 1,250 feet/min. and was wound up at a spindle speed of 7,600 r.p.m. according to Example 1, save that the traverse stroke was increased from 5 inches to 7 /2 inches and that the ring-rail was traversed in 20 second cycles. A 1 lb. package of yarn was thus produced with a conically tapering nose portion having a taper angle of 16 48'.
  • Example 4 60 denier nylon multifilament yarn was drawn at a ratio of 3.17 and at 625 feet/min. and was wound up at a spindle speed of 6,000 r.p.m. according to Example 1, save that the traverse stroke was increased from 5% inches to 7% inches during winding, and that the ringrail was traversed in 10 second cycles.
  • a 1 lb. package of yarn was produced with a conically tapering nose portion having a taper angle of
  • the propensity of the yarn to exhibit barr in fabric woven from it was reduced to below the visual level in a dyed fabric, and this despite the fact that the yarn was woven as weft in its substantially untwisted /2 turn per inch) condition.
  • a yarn package consisting of a bobbin and a drawn single filament or a plurality of drawn filaments of a synthetic linear high polymeric substance showing viscoelastic properties wherein superposed layers of loops of the yarn are wound upon said bobbin substantially immediately after the yarn is drawn, each layer extending by a small amount beyond the preceding layer at either or both ends of the package; said package containing at least one pound by weight of yarn and wherein the axial distance on said bobbin covered by the longest layer of loops of yarn is not substantially greater than 1 /2 times the axial distance covered by the shortest layer.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
US569852A 1955-03-17 1956-03-06 Thread package wound from continuous filaments of a synthetic linear polymer Expired - Lifetime US2980362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2980362X 1955-03-17

Publications (1)

Publication Number Publication Date
US2980362A true US2980362A (en) 1961-04-18

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US569852A Expired - Lifetime US2980362A (en) 1955-03-17 1956-03-06 Thread package wound from continuous filaments of a synthetic linear polymer

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US (1) US2980362A (cs)
BE (1) BE546202A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243142A (en) * 1964-11-24 1966-03-29 Monsanto Co Differential-fill wound package
US3645469A (en) * 1969-10-24 1972-02-29 Us Navy Nonrotating spool with optimum wire tension upon payout
US4204653A (en) * 1978-05-09 1980-05-27 Teijin Limited Non-uniformly wound yarn package

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256150A (en) * 1940-08-02 1941-09-16 Wingfoot Corp Apparatus and method for producing elastic yarn
US2379813A (en) * 1941-07-08 1945-07-03 Hartford Rayon Corp Rayon bobbin spinning machine and method of operation
US2407358A (en) * 1945-01-23 1946-09-10 American Enka Corp Method and apparatus for twisting thread
US2512951A (en) * 1947-06-16 1950-06-27 Dixie Mercerizing Company Mercerization
US2554537A (en) * 1950-04-13 1951-05-29 Synthane Corp Apparatus for treating synthetic fibers
US2764363A (en) * 1950-09-13 1956-09-25 Stammwitz Eugene Traverse mechanism for spinning, twisting and like frames

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2256150A (en) * 1940-08-02 1941-09-16 Wingfoot Corp Apparatus and method for producing elastic yarn
US2379813A (en) * 1941-07-08 1945-07-03 Hartford Rayon Corp Rayon bobbin spinning machine and method of operation
US2407358A (en) * 1945-01-23 1946-09-10 American Enka Corp Method and apparatus for twisting thread
US2512951A (en) * 1947-06-16 1950-06-27 Dixie Mercerizing Company Mercerization
US2554537A (en) * 1950-04-13 1951-05-29 Synthane Corp Apparatus for treating synthetic fibers
US2764363A (en) * 1950-09-13 1956-09-25 Stammwitz Eugene Traverse mechanism for spinning, twisting and like frames

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3243142A (en) * 1964-11-24 1966-03-29 Monsanto Co Differential-fill wound package
US3645469A (en) * 1969-10-24 1972-02-29 Us Navy Nonrotating spool with optimum wire tension upon payout
US4204653A (en) * 1978-05-09 1980-05-27 Teijin Limited Non-uniformly wound yarn package

Also Published As

Publication number Publication date
BE546202A (cs)

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