Патент USA US2404742код для вставки
July 23, 1946- J. J. POLAK ET AL . 2,404,742 MANUFACTURE OF LARGE PERMEABLE PACKAGES OF RAYON Filed Oct. 25, 1942 4/ JmwJPo/al “M I Ari/Earl. Jdaés'am Patented July 23, 1946 2,404,742 “UNITED STATES PATENT, OFFICE ‘ MANUFACTURE OF LARGE PERMEABLE PACKAGES OF RAYON James J. Polak and Arthur L. Jackson, "West Ashe ville, N. C., assignors to American Enka Corpo ration, Enka, N. 0., a‘. corporation of Delaware Application October 23, 1942, Serial No. 463,125 6 Claims. ( CI. 57—66) 1 2 . : This invention relates to the manufacture of rayon threadand the‘like. More particularly, the invention relates to a method and apparatus for spinning large packages of rayon thread which are‘ highly permeable and, consequently, may be easily andyquickly washed and‘ otherwise after treated. . . , addition to the conventional spinning machinery, in order to render the package ?uid permeable. ' _ The present invention is designed to e?ect sub stantial economies in, both spinning and subse quent handling, and has for its object the pro duction of a large, highly permeable package’ of ~ continuous rayon thread. _ ,According to conventional practice in the rayon . ‘ Y 1 , _ Another object ‘is the provision of a simpli?ed industry, for example, in the manufacture of method and apparatus for spinning rayon thread. rayon by. ‘the viscose process, a viscose solution 10 ‘ A further object is the production of a loosely is‘e‘xtruded‘ from a spinneret into an acid pre cipitating bath to for-m?laments. Upon ‘with drawal .irom the bath the formed thread is led wound thread package which may be readily un wound without tangling. , ‘_ _ , With these and, other objects in‘ view,.;t_he ‘in to a collecting, device, such as a bobbin or a cen _ vention contemplatesthe winding of rayon thread trifugal pot. .Both bobbin spinning and pot spin 15 under substantially no tension, in a slowly ro ning are. necessarily intermittent processes for tating “can” which, in addition to revolving about the manufacture of rayon thread, and since the its own‘ axis, 'also'revolves about an axis spaced spinning cycle must be“ interrupted each time a therefrom.“ ‘, . “ , ;, full bobbin or cake is collected, it is obvious that - The package thus wound consists of loose rings a longer spinning period with the production of w built ‘up in layers torform a. package oflany de larger. and heavier thread packages having great sired dimensions, .dep‘ending‘upon the size of can er lengths of, continuous thread wound thereon selected and the package weight desired. With would be accompanied by substantial savings in the present method and apparatus, rayon pack time and labor. This saving, of course, would ages-weighing ten pounds or more may be spun, washedland aftertreated in the can in a‘ rela» not be con?ned to the spinning process per se, but would be carried over into subsequent han dling operations where economies in time and labor would be directly proportional to the size of the package. ‘ V tively short time. ' Advantages of this invention may be; more ‘ "Rayon thread normally produced by conven 30 tionalmachinery is wound into a compact pack tron with a conventional two-bath spinningsys sage of liquids with which the thread is Washed tern, and treated. Inasmuch as impurities retained by thejthread irom 'the spinning operation harm- . fully “affectthe physical properties of the thread if ‘left in contact therewith too long, and the ac tion ‘of the washing liquid itself likewise endan gers the quality of the thread, the size of the pack ‘ mechanism for. driving the can shownv in Fig. 11-, Fig. 3 shows thepattern of the packagelproe , ‘ ‘ . tion, and n Fig. 5 shows still another pattern that maybe produced by the present invention. ‘ V . ‘ In Fig.‘ 1 is shown a conventional two-bath 45 spinning system for use in manufacturing-strong yarn, and which is particularlyadaptedto the‘ production of heavy denier, strong yarn suchnas may be employed in the production of cords for ing time required, with the attendant danger of reinforcing pneumatic‘tires and thelike. ,The 50 system‘comprises generally a trough pl divided bya partition 2 to form a coagulating bathe-3 and, treating bath ‘4. Spinning solution taken from a‘ building of packages of such large size has re quired the utilization of ‘complex and expensive ‘pattern and tension-controlling mechanisms,‘ in l Fig. .4 shows a modi?ed form of package that may be produced according to the present inven-. been determined by the‘ time required‘for injurin‘gtthe physicalproperties of the thread. It has been‘ ‘found possible, in bobbin spinning, to build a large package containing‘ many times the'amount of thread in normal size packages wound by conventional machinery. However, the ‘ ‘Fig. .2 is aperspective View in detail of‘ the’ ducedby the apparatus of Fig. 1, ‘treatment thereof, and the importance of thor oughly washing the thread package as quickly as possible is readily understood. Therefore, one of the obstacles to the commercial production of largerpackages of thread by well known meth odsand apparatus has been the increased treat Fig. ,1 is a perspective view of an apparatus for carrying out the invention, shown in conjunc age o?ering considerable resistance to the pas age readily apparent when considered in conjunction with‘ the accompanying drawing wherein 55 source of supply, not shown, is. extrudedvfrom a; spinneret? immersed in coagulating baths and is withdrawn therefrom in the form' of a thread 6. .Thread. 6 is ‘withdrawn from bath‘ ,3‘ ata con—: 2,404,742 4 3 of being rotated continuously at a low speed, can l4 may be operated intermittently, for a portion of a revolution, upon the completion of each stant rate of speed by a roller assembly compris ing driven roller or godet ‘I and guide roller 8, about which the thread is Wrapped a plurality of times. From roller ‘I the thread is led about an ‘ idler roller 9 immersed in treating bath ll and thence to afsecondroller assembly comprising a driven godet I0 and guide roller ll, about which the thread is wrapped a plurality of times. revolution of the plate. This could be effected by any suitable means such as a ratchet and pawl or other. mechanism for periodically trip ping gear I‘! and causing rotation thereof. The package built up in can I4 is soft and Preferably the temperature of the treating bath highly permeable, and has the further advan 4 is above 60° C., and godet I0 is driven at a 10 tage that it may be readily unwound direct from higher peripheral speed than roller 1 so that the can without danger of tangling. Further, the thread package may be washed and other the thread may be subjected to a rather high stretch there-between. Upon leaving godet lo wise af'tertreated in the can in a very short time the thread is led to, and wound a plurality of without removal of the package, then dried and turns around a third roller assembly comprising godet l2 and guide I3, and thence is allowed to fall by gravity into an open-top, cylindrical re ceptacle or can I4. Although further tension ing of the thread may take place between godet ,IOV and godet I2, the function of godet I2 is , primarily that of directing the thread into can 14, and for this reason is positioned directly thereabove. Therefore, it is clear that godet l2 may, if desired, be eliminated and its position taken by godet ID, or godet in may be dispensed with and the thread lead directly from treating transferred directly to other textile machines for rewinding into forms suitable for use by fabric manufacturers. Thus economies in operation are ' effected by the elimination of. a number of inter mediate steps between spinning and winding into a merchantable form ‘required in the normal production of rayon by conventional machinery._ When employing the present invention in the production of heavy denier thread for use in vre‘ . inforcing pneumatic tires, where it is required, that the ?nal product possess a minimum elon gation, a number of cans l4 carrying large, fresh ly spun packages of thread which have been pre bath 4 to godet l2. Can I4 is mounted for axial rotation upon a shaft‘ (see Fig. 2) projecting viously treated, with or without drying, are con-. through an opening in a plate I6. On the lower veyed to a slasher, through which the threads are end of shaft I5 is mounted a gear wheel ll. 30 conducted, and wherein they may be stretched and dried under tension prior to collection upon Plate'l6 is af?xed to a shaft l3 for axial rota-v tion therewith, and shaft [8-, in turn, is mounted for rotation in bearing [9 supported by a stand a beam. If desired, of course, the treatment of the packages in the can may be dispensed with ard 29,. Also affixed to shaft l8is a worm wheel . and the cans conveyed directly from the spin ning machine to the slasher. In such case the threads, upon withdrawal from the cans, may be led through treating baths prior to their re-i c-eption ‘by the rollers of the slasher proper. 2| which engages a worm 22 mounted upon a shaft 23' driven from any suitable source of pow er, not shown. Loosely mounted upon shaft I8, for independent rotation with respect there to, is a worm wheel‘ 24, ‘connected by a sleeve 25 to agear wheel 25. Worm wheel 24 meshes 40 with a worm 21, mounted upon a shaft 28 and is driven through a reduction gearing, not shown, The foregoing description is illustrative only, and it should be understood that modi?cations may be made in the invention without departing fro-m the spirit thereof. Therefore, the invention from the same source that drives shaft 23. ‘ The should be limited only by the scope of the ap motion of shaft 28 is communicated to shaft l5 and can M by a ‘gear wheel 29, engaging gears 45 pended claims. What is claimed is: ‘ _ 1. An apparatus. for winding freshly spun vis cose thread comprising a plate mounted for ro Figs. 3, 4 and 5 are~illustrations of thread pat tation about a pivot point, a cylindrical container terns that may be formed in the collecting de mounted upon said plate at a point spaced from vice ‘by utilizing the mechanism shown in Figs. 50 said pivot point for rotation upon its own axis, 1 and 2, each thread ring being formed by rota and two separate and independent means for tion of plate l6 and the displacement of succes rotating said plate and said container at dif sive rings being effected by the rotation of can ferent speeds.‘ l1 and 26 and a?ixed to a shaft 30 mounted in plate l6. ~ [4 about its axis. Since only slight displacement isv necessary to prevent the superimposition of successive rings of thread, the ratio of the num ber of revolutions of plate It to that of can [4 may be quite large, and successive rings are laid 2. An apparatus for winding freshly spun vis cose thread comprising a plate mounted for ro tation about a pivot point, a cylindrical con tainer mounted upon said plate at a point spaced from said .pivot'point for rotation upon its own to form an annular series such as is shown in axis, means for rotating said container, and Figs. 2, 4 and 5. rotated at about 16 R. P. M., can [4 may be re separate means for rotating said plate at a higher l rate of speed than said container. volved at about 1/64 R. P. M. to produce pack 3. An apparatus for winding freshly spun vis-v For example, if plate I6 is ages such as are shown in the drawing. The size cose thread comprising a plate mounted for ro and’ position of‘ the thread rings may be varied tation about a pivot'p'oint, a cylindrical con by adjusting the position of shaft IS with re 65 tainer mounted upon saidplate at apoint-spaced. ' spect to the axis of plate It. For example, the diameter of a single thread ring may be equal to or less than the radius of the can, and the rings laid between the center of the can and the wall thereof'as in Figs. 3 and4; or the diameter of ” from said pivot point for rotation upon its own axis, means for directing a threadinto saidcon- . tainer, means for rotating said cont_ainer,,,andmeans for rotating said plate at a rate ,of speed. greater than 1:1 with respect to the rate of ro-t, the thread ring may be greater than the radius tation of said container so. that thethread is. of the can so that the ring extends from the wall of the canto a point beyond the center laid in anannular series of overlapping rings,-v each ring extending from a point adjacent center of the container, to the periphery thereof. 4. An apparatus for winding freshly spun vis thereof, in which case‘ each thread ring overlaps the'other as shown'in Fig. 5. Likewise, instead 5 2,404,742 cose thread comprising a thread source, means for causing said thread to fall by gravity from a substantially ?xed point, a driven shaft, a plate member mounted for axial rotation upon 6 tainer whereby the thread is deposited in suc cessive layers, each layer comprising an annular series of substantially circular commonly over lapping rings. said shaft, a cylindrical receptacle mounted for 6. In a method of manufacturing freshly spun, axial rotation upon said plate at a point spaced viscose rayon wherein a spinning solution is ex from the center thereof, means for rotating said truded into a precipitating medium to form ?la plate and independent means for rotating said mentous thread and the thread is withdrawn receptacle at a considerably lower rate of speed therefrom and passed to a point of collection, than said plate whereby the thread is laid in an 10 the steps comprising, causing the thread to fall annular series of overlapping rings, each ring .by gravity from a substantially ?xed point into extending from a point adjacent the center of a container rotating about its own axis while in the receptacle to the periphery thereof. dependently rotating the container about an 5. In a method of manufacturing freshly spun, axis spaced from the axis of the container, the viscose rayon wherein a spinning solution is ex 15 R. P. M. of the plate being many times that of truded into a precipitating medium to form ?la the container whereby the thread is deposited in mentous thread and the thread is withdrawn successive layers, each layer comprising an an therefrom and passed to a point of collection, the steps comprising, causing the thread to fall by nular series of substantially circular commonly gravity into a container rotating about its own 20 axis while independently rotating the container about an axis spaced from the axis of the con overlapping rings, JAMES J. POLAK. ARTHUR L. JACKSON.