Патент USA US2131814код для вставки
Oct. 4, 1938. R. w. MONCRIEFF Ejr AL \ 2,131,814 LIQUID TREATMENT OF YARNS Filed Jan. 18, 1935 78 g 7 F76. 2 a 20 ; o 55/ v / 27 58 19 ->y=1o i I I 0 @e y! ,6 A 5 ‘I ° ’ E ' 14 0‘ é E l l (D I i* l ' l 0 | 17 E 1517 75 129 . 52 l‘ 51 27 26 85 a4 .-/ 7 25 25 24 L ‘35 34 EU / RUBERT W- MON?RlEFF FRANK B- HILL THOMAS B FREARSON ./ men-rows WW A-TTORNEY; Patented Qct.4,--193_8j 2,131,814 UNITED/STATES PATENT OFFICE" ‘LIQUID mmi?ilgifri or mans Robert Wighton Moncrie?', Frank Brentnail Hill, and Thomas Barnard Frearson, Spondon, near Derby, England, to Celanese Corporation of America,assignors a corporation of Del aware Application January 18, 1935, Serial No. 2.324 In_ Great Britain February 8, 1934 8 Claims. -(Cl. 8-154) This invention relates to the liquid treatment rate sufficient to make up for the ?ow from the _ of yarns, and has as its principal object to provide ,casing and to keep the spindle ?lled over the a means for carrying out effectively‘suchtreat ment upon yarns wound into packages. 5 length occupied by the bobbin.‘ . ing drawing, in which and/or-after the treatment, considerable difficul tion of the apparatus; . ’ _ ‘ments are only lightly‘twisted together. ‘ ' We have, now found that uniform treatment of yarn on a bobbin can be effected by surrounding a ' Fig. 2 shows in section a detail of the apparatus 10 ‘ of Fig. ,1, and tinuous ?laments, ‘and particularly if the ?la bobbin with a casingand forcing treating liquor ' Fig. I is a diagrammatic elevation partly in sec is ?ne in character and where ‘it consists of vcon through the bobbin into the casing, the casing being maintained full during the operation and the liquor being allowed to escape from the casing ' cording to the invention will now be described in 5 greater ‘detail with reference to the accompany form presents many advantages, including the possibility of avoiding re-winding the yarn before ties are met with in practice in effecting uniform in treatment of the yarn, especially where the yarn , By way of example ‘one form of apparatus ac- , While the liquid treatment of yarn in package - Fig. 3 is a horizonta cross~section of the bobbin illustrated in Fig. 2. ' > Referring to Fig. 1, the apparatus comprises a rail'5 carrying a spindle mounting B which sup- 15 ports a spindle‘ ‘i. The spindle ‘i is inverted, the - wharl 8 by means of which it is driven being at its upper end just below the rail 5. As seen in Fig. 2, the spindle ‘I is hollow, is maintained in the casing. The whole of the yarn vclosed at the bottom by means of a plug 9, and is 20 "with a number of perforations iii. A on the bobbin is thus subjected to the liquor under provided knurled nut i i is provided on a threaded part l2 pressure so that not only is the yarn uniformly '- treated along the length of the bobbin, but‘also of the spindle l, the nut ll supporting a large throughout the thickness of the bobbin, because ?anged ‘member l3 into which ?ts a wide sleeve the pressure maintained in the surrounding liquor or casing it which may conveniently be welded 25 by the casing precludes rapid ?ow through the thereto. A further nut IS on thethreaded por tion 12 supports a bobbin It, a. rubber ring I‘! outer layer of yarn. , The bobbin is suitably perforated or slotted so being ‘interposed between the nut l5 and the bob bin IG. Towards the upper end of the spindle 1 30 as to provide for substantially uniform distribu there is ?tted a further large ?ange‘ iii of the same 30 tion of the liquor introduced under pressure with in the hollow bobbin. A lining of gauze or the size as the ?ange l3, into which the upper end of the casing l4 ?ts. .The casing l4 and the upper like may also be employed to assist in such dis ?ange IQ of the bobbin l6 are pressed by means tribution. ' I The requisite pressure is conveniently set up by of the nuts ii and I5 against a rubber packing 20 at a slow rate so that considerable pressure is means of centrifugal force. Thus, the bobbin may , ring 20’. Three small perforations 2| are pro- 35 be mounted on a. perforated or slotted spindle vided in the casing M, at points symmetrically driven, by any convenient meansoat the requisite speed. The liquor is then supplied to the interior 40 of the hollow spindle, centrifugal force driving the liquor through the yarn on the bobbin into the surrounding casing. When the casing becomes full, the liquorv in it reaches considerable'pressure. A slow rate of ?ow of. the liquor from the outer 45 casing is conveniently effected‘by ‘the provision of ?ne perforations through which the liquor‘is ' ?ung by the rotation of the casing. These per forations are preferably symmetrically placed ' round the casing to avoid the setting up of vibra .50 tions, 'and have a size appropriate to the ?ow de sired at the speed of operation employed. For example, for operation at speeds up to say 15,000 or 16,000 revolutions per minute, two or three holes may be used of a. diameter up to .015 inch. 65 ‘Liquor is supplied to the hollow spindlev at a disposed around it. The hollow spindle 'l is tapered internally, being narrower towards its upper end than at its lower end. ' Referring again to Fig. 1, the entire .spindle 40 assembly is surrounded by means of a guard cas ing 23 from the bottom of which a drain 24 leads into a drain tank 25. The upper end 26 of the spindle 1, which is open at the top is also sur - rounded by a guard 2'! from which a drain 28 45 leads into the drain tank 25. The liquid with which the yarn is to be treated is supplied from a feed tank 30 through a feed pipe 3| and valve 32 to the open upper end 26 01' the spindle ‘l. The liquid running into the drain tank 25 is con- 50 veyed by means.’ of ‘a pump 33 and pipes 34 back to the feed tank 30. v ‘ > ' The spindle ‘I, together with the bobbin l6 mounted thereon and the ?anges I 3, I 3 and the . casing i4, is set in rotation by means of the wharl 55 2 2,131,814 8, and the liquid, with which, the space inside the casing I4 is fed from the feed tank 30, is ?ung , outwards under centrifugal force, issuing slowly from the ?ne ori?ces 2!. The valve 32 is ad justed so that, after the space within the casing I4 has been entirely ?lled, the rate of supply of liquid from the feed tank 30 to the interior of the spindle ‘I is su?icient to make up the amount of liquid issuing from the ori?ces 2|. Any excess 10 of liquid fed by the pipe 3| is ?ung out by centrif ugal force and caught by the guard 21 from which it drains to the tank 25. The liquid ?ung through the ori?ces 2! is caught by the guard 23 and runs through the drain 24 also into the drain 15 tank 25 from which the liquid is returned to the feed tank 30. By these means the liquid applied is forced through the yarn 35 wound on the bob bin I6, under high pressure, and at a rate which is slow by reason of the ?neness of the ori?ces 2 I. 20 As a result, the yarn 35 is uniformly treated with the‘ liquid throughout its entire thickness on the 30 35 40 45 50 55 60 yarn, e. g. cellulose acetate or other cellulose de rivative yarn, and viscose, nitrocellulose, and cuprammonium arti?cial silk. In the case of dyeing, dyestu?’s may be employed as solutions or dispersions, care being taken in the latter case to see that an adequate amount of dispersing agent is present. The invention may also be em ployed in connection with the complete or partial saponi?cation of cellulose acetate or other cellu lose ester yarns, a suitable saponifying agent, together, if desired, with a small quantity of wetting agent being forced under pressure through the material. For example, a solution of caustic soda of say 2%, 5%, 15% or higher concentration may be passed through a bobbin of cellulose acetate yarn until the cellulose ace tate has reached the desired degree of saponi? cation. ‘ The invention may also be applied to the treat ment of yarn wound in cake form, as produced The rail 5 may conveniently serve as a support by centrifugal boxes in wet processes for the pro for a series of spindles, all the spindles being duction of arti?cial ?laments. Thus, using the fed, if desired, by a common feed tank 30, and method of applying pressure described above with draining into a common drain tank 25. Uni-" reference to the drawing, the cake may be formity of treatment of the several packages placed within a perforated shell and mounted on simultaneously treated in one batch, and -of the the spindle 1. The shell is surrounded by the casing l4 perforated to permit and control the several batches successively treated may be en sured by any convenient means, e. g. by ensuring ?ow of liquor supplied to the interior of the cake. 30 that the same quantity of liquid ?ows through In order to distribute the liquor over the inner layers of the cake, a perforated shell similar to each package. the wire gauze 38 may be placed inside the cake, < The employment of an inverted spindle 1 hav ing a driving wharl 8 near the upper end thereof - liquor being supplied at a rate su?icient to cover not only makes for steadier running, the greater the whole length of this inner shell. Apart from 35 part of the weight of the spindle being below the washing, bleaching, and dyeing yarn in cake bearings which support it, but also prevents the form, this application of the invention is ad wharl and the driving belt therefor from being vantageous in connection vwith saponifying or splashed with the liquid issuing from the ori?ces otherwise treating stretched cellulose acetate or 2|. The tapered boring of the spindle ‘I causes otheryarns which have been collected in cen 40 the liquid initially introduced at the upper end trifugal boxes at the end of the stretching opera 26 of the spindle to be ?ung towards the bottom tion. What we claim and desire to secure by Letters of the spindle and ensures that the system is ?lled Patent is: with liquid. 1. Process for the liquid treatment of yarn in 45 The bobbin employed and illustrated in vertical section in Fig. 2 is shown in horizontal section package form, which comprises feeding a treat in Fig. 3. The bobbin is made throughout of ing liquid into a hollow yarn package and rap steel, and the barrel thereof on which the yarn idly rotating said package so as to force said 35 is wound consists of a number of bars 36 of liquid through the yarn on said package by pres triangular cross-section between which are spaces sure due to centrifugal force, said package being 60 completely immersed in treating liquid contained 31 through which the liquid is thrown by cen trifugal action. Outside the bars 36 is wound a in a casing ‘from which said liquid is allowed to cylinder of wire gauze 38 with which the yarn 35 issuevat a rate such that the liquid in the casing is in direct contact. If desired, a similar cylinder is maintained under super-atmospheric pressure. 2. Processfor the liquid treatment of ‘yarn in 55 of wire gauze may be ?tted inside the hollow spindle 1 in order that the liquid ?owing out from package form, which comprises feeding a treat ing liquid‘into a hollow yarn package, rapidly ro the spindle may be more evenly distributed. > The speed of rotation of the spindle ‘I varies in tating said package so as to force said liquid through the yarn on said package by pressure accordance with the nature of the yarn under going treatment and of the liquor itself, especially due to centrifugal force, said package being com 00 pletely immersed in treating liquid contained in the viscosity of the liquor. Low-twisted continu bobbin. Ci eral, the invention being particulraly suitable for the treatment of arti?cial continuous ?lament ‘ ous ?lament yarn requires‘a greater rate of ro a casing from which said liquid is allowed to ' tation than, yarn of higher twist, but uniform treatment ,canébe effected even with low twist issue at a rate such that the liquid in the casing is maintained under a pressure substantially 65 65 continuous ?lament yarn substantially parallel ' greater than that outside the casing. 3. Process for the saponi?cation of yarn con wound on to the bobbin. Again, the ?ner the denier of the ?laments in such yarn the greater taining a cellulose ester while such yarn is in package form, which comprises feeding a sa the rate of rotation necessary. The liquor is sup plied and the spindle ‘I kept in rotation for a. 70 period depending on the extent of treatment re quired. As examples of liquid treatments which may be carried out by the method and means ac cording to the invention may be, mentioned, 75 washing, bleaching, and dyeing of yarns in gen ponifying liquid into a hollow package of yarn comprising cellulose ester ?laments and rapidly 70 rotating said package so as to force said liquid through the yarn on said package by pressure due to centrifugal force, said package being com pletely immersed in treating liquid contained in a casing from which said liquid is allowed to 76 '3. 2,131,814 issue ‘at a rate such that the liquidin the casing is maintained under a pressure substantially greater than atmospheric. .4. Process for the ‘dyeing of yarn in package form, which comprises‘ feeding a dye liquor into a hollow yarn package and rapidly rotating said package so as to force said liquor through the yarn on said packagev by pressure due to centrif ugal force, said package being completely im 10 mersed in treating liquid contained in a casing from which said liquid is allowed to issue at a rounding the casing and adapted to catch the liquid ?owing therefrom.. ‘ 7. Apparatus for the liquid treatment of yarn ‘ in package form, comprising alcasing provided with an outlet means, means comprising a per forated hollow spindle adapted to carrya hollow yarn package coaxially .in said casing, driving means for said spindle at,the upper end there of, means for‘ feeding ‘treating liquid to the in terior of said package, and means for rapidly 10 rotating said casing with the yarn package con rate such that the liquid in the casing is main tained therein, so as to force the liquid fed into tained under a pressure substantially greater _ the-package through the yarn- on the package ' than atmospheric. 15 5. Apparatus for the liquid treatment of yarn in package form, comprising a casing provided with an outlet means, means for holding a hol low yarn package ‘coaxially in said casing, means for feeding treating liquid to the interior of said 20 package, and means for rapidly rotating said, casing with the yarn package contained therein, so'as to force the liquid fed into the package through the yarn on the package under pressure and out through said outlet means, said outlet 25 means being of such dimensions as to offer a substantial resistance to the liquid ?ow.‘ ' 6. Apparatus for the liquid treatment of yarn i-napackage form, comprising a casing provided with an outlet means having a cross-sectional area not exceeding the order of 6. x 10*4 square ' centimeters, means for holding a hollow yarn package coaxially in said casing, means for feed ing treating liquid to the interior of said pack age,v means for rapidly rotating'said casing with the yarn package contained therein, so as to. ' ‘Iorce'the liquid fed into the package through the yarn on the package under pressure and out through said outlet means, and means sur l under pressure and - out through said outlet means, said outlet means being of such dimen 15 sions as to offer a substantial resistance to the liquid ?ow. 8. Apparatus for the liquid treatment of yarn in package form, comprising a perforated hollow spindle, means at the upper end of said spindle 20 for rapidly rotating the same, a ?ange on said spindle near said driving means, a nut near the lower end of said spindle adapted to force a yarn‘ package mounted on said spindle towards said ?ange, a cylindrical casing adapted to‘ surround 25 said ?ange and to ?t into said ?ange, a further ?ange adapted to support si‘d casing from be- , neath, a nut adapted to screw on to said spindle and to hold said further ?ange in position, means for feeding treating liquid to the interior of said 30 spindle, said cylindrical casing being provided with at least one ?ne perforation such as to al low the liquid to escape but to offer a substantial l resistance to its ?ow. ROBERT WIGHTON MONCRIEFF. FRANK BRENTNALL HILL. THOMAS BARNARD/FREARSON.