US2302792A - Apparatus for use in the manufacture of rayon - Google Patents

Apparatus for use in the manufacture of rayon Download PDF

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Publication number
US2302792A
US2302792A US390211A US39021141A US2302792A US 2302792 A US2302792 A US 2302792A US 390211 A US390211 A US 390211A US 39021141 A US39021141 A US 39021141A US 2302792 A US2302792 A US 2302792A
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United States
Prior art keywords
thread
roller
arm
storage
axis
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Expired - Lifetime
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US390211A
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English (en)
Inventor
Adrian J L Moritz
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Akzona Inc
Original Assignee
American Enka Corp
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Filing date
Publication date
Priority to BE469571D priority Critical patent/BE469571A/xx
Priority to NL61873D priority patent/NL61873C/xx
Application filed by American Enka Corp filed Critical American Enka Corp
Priority to US390211A priority patent/US2302792A/en
Application granted granted Critical
Publication of US2302792A publication Critical patent/US2302792A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0454—Supporting filaments or the like during their treatment while in continuous movement using reels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/017—Filament stretching apparatus

Definitions

  • This invention relates to the continuous spinning of yarns of synthetic. origin and is more particularly concerned with a thread-storage, thread-advancing device employed incident to the practice of such a method for the manufacture of rayon.
  • the rayon spinning art at its present state of development, includes three commercially acceptable methods of manufacturing threads of synthetic origin; pot spinning, bobbin spinning and continuous spinning. The first two of these have reached a high state of development and are at present widely utilized in the commercial production of yarns of synthetic origin. On the other hand, continuous spinning has not yet enjoyed wide-spread commercial acceptance.
  • advancing device used in continuous spinning is that it-be adaptable to the various after-treatments performed while the thread is passing thereover.
  • the construction should be susceptible-to use with washing and desulphurizing baths or sprays and should be equally satisfactory. for drying and stretching operations.
  • the control of the threads passing along the thread-storage, thread-advancing device should be complete and accurate so as to avoid tangles, matting or other difl'iculties requiring a temporary shut-down of one complete continuous spinning unit. It is also most important that the linear speed of the thread or yarn be as high as possible, since the volume of yarn treated per unit of time goes to the very essence of operating economy.
  • newly formed yarn is usually led directly from a spinning bath to a thread-storage, thread-advancing device around which the thread is passed in a series of generally helical coils.
  • an after-treating step such as washing, is accomplished concurrently with the feeding of the thread across its-temporary support.
  • threadadvancing device After leaving the first thread-storage, threadadvancing device the yarn is generally led to another such device for a further after-treatment, such as desulphurizing, drying, stretching, etc.
  • the finished thread issuing from the system is wound into some type of package fortwisting or in some instances for shipment to the consumer.
  • a single continuous thread may be efiicient- 1y subjected to all necessary after-treatments on tiously regardless of whether the unit is used in I a continuous spinning system or as an adjunct to bobbin or pot spinning.
  • Another object of this invention is to provide for the drying of threads of synthetic origin in a continuous manner with tension released so that the residual shrinkage in the dry yarn may be eliminated or greatly reduced.
  • Figure 1 is a view partially in side elevation and partially in section of a thread-storage, thread-advancing device constructed according to this invention showing thread in position thereon;
  • Figure 2 is a view in elevation of the end of the thread-storage, thread-advancing device of Figure 1 opposite the driving end thereof;
  • Figure 3 is a view in side elevation of a modified type of thread-storage, thread-advancing device constructed according to this invention, portions of the View being in section to illustrate heating means;
  • Figure 4 is a view, partially in section,.taken along the line 44 of Figure 3,
  • the threadstorage, thread-advancing device shown consists of a roller Ill and an arm II which together constitute a support for a continuous yarn or thread, and which may be relatively moved to cause the thread to feed axially of the device as a whole in a generally helical path.
  • a shaft I2 is provided which projects axially from one end of roller 10. This shaft is a drive shaft for roller l and is keyed in a concentric position thereto in any suitable manner (not shown).
  • the projecting portion of shaft I2 is supported for rotation in a bearing I3.
  • the end of shaft [2 remote from roller I0 issuitably attached to a sprocket M for rotation therewith.
  • a spider I5 surrounds shaft l2. This spider is freely rotatable in a concentric path about shaft I2 and serves as a support for its integral arm ll. Keyed to spider I5 is an additional sprocket Hi. It will be noted that inasmuch as spider I5 is mounted for rotation about shaft 12, arm I l and roller l0, when caused to rotate by actuation of their respective driving sprockets l6 and I4, will each move about a common-axis, i. e., the center.
  • arm II and roller l0 are independently driven through sprockets l6 and M, respectively, so that, by connecting the sprockets to different power sources, it is possible to drive arm H and. roller [0 at different rates of speed.
  • sprockets l4 and i6 The source of power for sprockets l4 and i6 is not important to this invention except that some conventional means must be provided for driving the two' sprockets at different speeds. As will be hereinafter-explained in conjunction with the operation of this device, it is generally preferable that sprocket I6 be driven faster than roller l0 and/in the same direction.
  • the upper surface of arm I l is a threadcontacting surface and that such surface and the common axis of arm II and roller I0 0011- verge. It is this convergence which brings about the axial feeding of thread supported on the de-' vice.
  • a portion of the surface of roller I0 is frusto-conical in shape, the portion of greatest cross-section of roller l0 coinciding with the point of greatest convergence of the surface of arm H and the said axis.
  • so shaping roller I0 is to counteract the tendency toward a reduction of peripheral speed of the unit toward its outer end which would be normal to the use of a roller of uniform cross-section throughout its length.
  • Such reduction in peripheral speed has, under some circumstances, been found detrimental causing the creation of slack in the thread thereby allowing convolutions thereof to mat when treated with a washing liquid or like spray.
  • the apex angle controlling the conicity of roller Hi may be varied in such a way as to cause increases in peripheral speed as the thread coils approach the unsupported end of the device. In this case, stretching can be accomplished by use of the construction of the present invention.
  • the thread-storage, thread-advancing device shown in Figures 1 and 2 is intended for use as a unit of a continuous spinning machine containing a large number of such devices.
  • continuous spinning the freshly spun filaments issuing from the coagulating bath are drawn therefrom directly to the first thread-storage, thread-advancing device on which after-treatment is commenced. Thereafter, the thread is led successively from thread-storage device to threadstorage device until after-treatment is complete.
  • initiating spinning it is necessary, of course, to thread-up separately each thread-storage, thread-advancing unit of the system.
  • this is done by merely allowing the free end of the thread to fall across the top of the thread-storage, thread-advancing device somewhere adjacent its unsupported end, while the roller I0 is being driven in a take-up direction and arm II is driven in the same direction but at a greater rate of speed. (As an example of this, see Figure 2 in which arm II and roller ID are driven counterclockwise, the approach of thread being from the right as viewed from the unsupported end of the unit.)
  • roller I will have the effect of causing the coils to be spaced further apart. While the relative speeds of roller I0 and arm ll serve in part to control spacing, the combination of the two speeds will control the linear speed of the thread and consequently the amount of thread which .may pass over the roller per unit of time.
  • thread-advancing device of this invention has been described in its function as a unit of a continuous spinning machine. It is evident, however, that the invention is adaptable as an adjunct to pot spinning and bobbin spinning.
  • the freshly extruded filaments may be led directly from the spinning bath to await such as that shown in Figures 1 and 2 and a washing liquid may be applied to the thread in its passage thereover.
  • advancing device for desulphurizing or alternatively may be wound on a bobbin or laid up in cake form in a spinning pot.
  • the resultant package can then be dried according to conventional practice.
  • a bobbin or pot collection can be effected.
  • the advantage in this type of spinning which has been characterized in theindustry as semi-continuous spinning, is that a: thorough regeneration of the thread and adequate washing thereof is insured before the preparation of a package, this resulting in the production of a thread of superior quality characterized by a high degree of uniformity throughout/its length.
  • FIG. 3 and 4 of the drawing The construction shown in Figures 3 and 4 of the drawing is similar in operation to the embodiment of the invention illustrated in Figures 1 and 2.
  • a roller I! is provided having a shaft l8 attached thereto in the manner of shaft 12 to roller l0.
  • Sprocket l9 corresponds in struc-- ture and function to sprocket M.
  • Spider 20, however, is provided with two arms 22 adapted to move concentrically about roller l1.
  • Roller 11 is a hollow cylindrical one provided with a flared portion 23 at its unsupported end.
  • This flared portion communicates with a drain arrangement 24 which serves to drain out a heating fluid which is supplied to the interior of the roller through roller I'I is'for a drying operation and during the drying of wet spun rayon, a certain amount of shrinkage occurs.
  • a drain arrangement 24 which serves to drain out a heating fluid which is supplied to the interior of the roller through roller I'I is'for a drying operation and during the drying of wet spun rayon, a certain amount of shrinkage occurs.
  • the cross-sectional area of the unit remained constant for the entire length thereof, the normal shrinkage incident to drying could not occur, but, on the contrary, undesirable tension would be a necessary incident to the axial feeding operation.
  • a reduction in peripheral speed occurs as the free end of the device is approached. This may be controlled by the inclination of the arms 22 shown in Figure 3 so that reduction in cross-sectional area of the device may exactly correspond to the shrinkage brought about in the drying operation. Thus, properly.
  • a thread-storage, thread-advancing device comprising, rotatable means defining an elon-' gated thread contacting surface, at least one arm independently rotatable about the surface of said means in a path concentric thereto, the thread contacting surface of said arm and the axis thereof converging, and means for driving said rotatable means and said arm at different speeds.
  • a thread-storage, thread-advancing device comprising, rotatable means defining an elongated thread contacting surface, an: arm independently rotatable about the surface of said means in a path concentric thereto, the thread contacting surface of said arm and the axis thereof converging, means for driving said rotatable means and said armat different speeds, and means for supporting said arm and said rotatable means from one end only of the device.
  • a thread-storage, thread-advancing device comprising, a roller rotatable about an axis, an arm also rotatable about said axis, said arm being spaced from but overlying the thread contacting surface of said roller, the thread contacting surface of said arm and said axis converging, and independent means for driving said roller and said arm at different speeds to cause the same to move about said axis.
  • a thread-storage, thread-advancing device comprising, a roller rotatable about an axis, an arm also rotatable about said axis, said arm being spaced from but overlying the thread contacting surface of said roller, the thread contasting surface of said arm and said axis converging, independent means for driving said roller and said arm at different speeds to cause the same to move about said axis, and means for supporting said arm and said roller at the end of the device remote from the end of greatest convergence of the surface of said arm and said axis.
  • a thread-storage, thread-advancing device comprising, a roller having a frusto-conical thread contacting surface, a drive shaft extending axially from and supporting said roller for rotation, a spider mounted for rotation about said shaft, an arm extending from said spider and overlying the surface of said roller in spaced relation thereto, said arm including a thread contacting surface convergent toward the axis of rotation of the roller, means for driving said arm and said roller at different speeds, the roller increasing in diameter in the direction of the convergence of the surface of said arm and said axis, whereby to maintain a substantially constant peripheral speed of thread passing over the roller and arm when the roller is caused to rotate and the arm to move thereabout.
  • a thread-storage, thread-advancing device comprising, a roller having .a frusto-conical thread contacting surfaceLa supporting drive shaft extending axially from one end only of said roller, a spider mounted for independent rotationabout said shaft, at least one arm extending from said spider and overlying the surface of said roller in spaced relation thereto, said arm including a thread contacting surface convergent toward the axis of rotation of the roller, means for driving said spider and said drive shaft in the same direction at different speeds about their common axis, the roller in-- creasing in diameter in the direction of the convergence of the surface of said arm and said axis, whereby to maintain a constant peripheral speed of thread passing over the roller and arm when the roller is caused to rotate and the arm to move thereabout.
  • a thread-storage, thread-advancing device comprising, a cylindrical roller, a drive shaft supporting said roller for rotation about its axis, a spider mounted for independent rotation about said shaft, a plurality of arms extending from said spider over the surface of .said roller in spaced relation thereto, the thread contacting surface of said arms converging toward'the end of said roller remote from said shaft, means for heating said roller, and means for driving said spider and said shaft at different speeds, the convergence of said arms resulting in a progressive reduction in the periphery of the device in the direction of its feed, whereby free shrinkage of thread being dried thereon is permitted.
  • a thread-storage, thread-advancing device comprising, a cylindrical roller, a supporting drive shaft extending axially from one end only of said roller, a spider mounted for independent rotation about said shaft, a plurality of arms extending from said spider over the surface of said roller in spaced relation thereto, the thread contactin'g surface of said arms converging toward the end of said roller remote from said shaft, means for heating said roller, and means for driving said spider and said shaft at different speeds about their common axis, said heating means being applied from the end of the device remote from the axially extending shaft, the convergence of said arms resulting in a progressive reduction in the cross-sectional area of the device in the direction of its feed, whereby free shrinkage of thread being dried thereon is permitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US390211A 1941-04-24 1941-04-24 Apparatus for use in the manufacture of rayon Expired - Lifetime US2302792A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE469571D BE469571A (xx) 1941-04-24
NL61873D NL61873C (xx) 1941-04-24
US390211A US2302792A (en) 1941-04-24 1941-04-24 Apparatus for use in the manufacture of rayon

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US390211A US2302792A (en) 1941-04-24 1941-04-24 Apparatus for use in the manufacture of rayon

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US2302792A true US2302792A (en) 1942-11-24

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BE (1) BE469571A (xx)
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631382A (en) * 1948-09-14 1953-03-17 Ind Rayon Corp Thread-advancing reel
US2639485A (en) * 1949-06-29 1953-05-26 Goodrich Co B F Industrial cord treating apparatus
US2778058A (en) * 1950-01-11 1957-01-22 Inventa Ag Filament stretching apparatus
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
US3274824A (en) * 1964-05-21 1966-09-27 Lawson Engineering Co Method and apparatus for tensile testing
US3808654A (en) * 1969-07-31 1974-05-07 R Stanley Textile treatment method
US3978559A (en) * 1974-03-29 1976-09-07 Techniservice Corporation Yarn treating apparatus
US7841103B2 (en) * 2003-12-30 2010-11-30 Kimberly-Clark Worldwide, Inc. Through-air dryer assembly

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631382A (en) * 1948-09-14 1953-03-17 Ind Rayon Corp Thread-advancing reel
US2639485A (en) * 1949-06-29 1953-05-26 Goodrich Co B F Industrial cord treating apparatus
US2778058A (en) * 1950-01-11 1957-01-22 Inventa Ag Filament stretching apparatus
US2874410A (en) * 1954-06-30 1959-02-24 Du Pont Apparatus for uniformly drawing a plurality of filaments
US3274824A (en) * 1964-05-21 1966-09-27 Lawson Engineering Co Method and apparatus for tensile testing
US3808654A (en) * 1969-07-31 1974-05-07 R Stanley Textile treatment method
US3978559A (en) * 1974-03-29 1976-09-07 Techniservice Corporation Yarn treating apparatus
US7841103B2 (en) * 2003-12-30 2010-11-30 Kimberly-Clark Worldwide, Inc. Through-air dryer assembly

Also Published As

Publication number Publication date
NL61873C (xx)
BE469571A (xx)

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