US1862259A - Thread core for dyeing operations and method of making same - Google Patents

Description

C. K. DUNLAP June 7, 1932'.

THREAD CORE FOR DYEING OPERATIONS AND METHOD OF MAKING SAME Filed May 5, 1928 Patented June 7, 1932' UNITED STATES PATENT oEElcE CHARLES K. DUNLAP, F HARTSVILLE, SOUTH CAROLINA THREAD CORE FOR DYEIN G- OPERATIONS AND METHOD OF MAKING- SAME `Application led May 3,

The present invention relates to cores for thread packages or windings and particular- 1y to cores for supporting such thread packages or windings while they are undergoing the process or processes of dyeing.

In the textile industry it is found necessary to color a very large percentage of the.

thread used, prior to the time of`its incorporation in the finished fabric. While some of the thread is dyed in skeins, by fai;4 the greater proportion is dyed in compact packages or windings of thread upon supporting cores. Such supporting cores have generally been of metal and tubular in shape, the core and its package being subjected tothe action of the dye liquor while positioned in a tank. Various methods of treating the thread with the dye liquor have been devised and are now being practiced, but in every case the supporting core itself comes in Contact with the liquor and this liquor is usually very severe in its action upon ordinary metallic tubes, and, even tubes of special metals, being usually heated to high temperatures and containing potash and caustic materials. The metallic tubes will corrode, with the possible exception of Monel metal which however, is comparatively expensive, and furthermore there is a tendency for cer-tain salts to form adjacent the surface of the metallic tube which causes, in many instances, variations in shade between the inner-most layers Aof the thread winding and the remainder thereof.

It is the object of the present invention to provide an improved core for thread packages or .windings comprising a tube, cone or cylinder of specially treated paper which lshall be cheap to manufacture, mechanically strong and stiff, resistant to asatisfactory degree to the action of the dye liquor and lighter and more convenient to handle than metallic tubes or tubes of composition materials.

Furtherobjects and features of the invention will be apparent from the following description taken in connection with the accompanying drawing in which Fig. 1 is an elevational View of one form of core made in accordance with the principles of the present invention, a portion of the core being broken away` to illustrate the construction 192s'. serial No. 276,492.

thereof and the method of forming the same. Fig. 2 is a section on the line 2 2 of Fig. 1.

In accordance with the present invention a tube indicated generally at 10 of hard paper stock is wound with a special paste 11 and'is 2 preferably then given a treatment which further hardens it and which also renders it more impervious to the action of the dye liquor. It will be understood that, were an ordinary paper tube subjected to the action of dye liquor, it would be almost immediately softened and further, the paste, by means of which thev several convolutions of the tube are secured to one another, would be eaten away so that the tube would lose its form or completely unroll. The paste which I employ contains rubber latex and I have-found that a paste mixed substantially as follows is entirely satisfactory in practice.

To 3 quarts of starch paste (about 10% solids) heated to a temperature of about 160``y F., is added one quart of liquid rubber latex (33% solids). The ingredients are thoroughly mixed together and the paste is then ready for` use. It will be appreciated of course that the proportions of latex tostarch paste may be varied considerably to suit different operating conditions andethat the invention of course is not limited to the exact proportions set forth above.

In the formation of a tube the paper blank 12 is coated withthe latex paste 11 on both sides in the usual manner, then wound tightly upon a mandrel so that its walls are several plies in thickness, discharged from the mandrel and dried. The resulting tube 10 is then placed on a perforating machine which perforates its wall at a large number of points y 13 so that dye liquor may pass through the apertures thus formed and reach the inner layers of the thread winding. In/most dyeing processes the dye liquor is either forced or drawn through such perforations and in some instances is alternately discharged outwardly through the thread package under pressure and then drawn inwardly thro h the thread package and perforated tube l- I held in this bath for a period of from. 15 minutes to a period of 60 minutes. The sulphur penetrates the paper fibres, entering the paper fibres through the walls of the perfo rations ofthe tube, which circular Walls are of course not coated with thev latex paste, having been formed subsequently to the rolling of the tube. The sulphur penetrates the tube by travelling longitudinally of the paper comprising the same. The period which the tube is kept .in the sulphur bath will depend upon thecharacter of the paper and the degree of hardening which it is hoped to realize by the immersion.` When lifted from the bath the excess sulphur dra-ins off of the outer and inner tubular cylindrical lsurfaces of the tube, this sulphur not adhering to any perceptible degree to the latex paste coated Walls.

When the tube is dry it may be used and, Without further treatment Will be found to provide a satisfactory core for a thread package in a dyeing operation. If the dyeing process to which 'it will be exposed however is very severe a further treatment may be given it to render it still more resistant to the action ofthe dye liquor. Thus it may be immersed in a solution of rubber produced in accordance with the process outlined in Pat-` ent No. 1,627,725, issued May 10, 1927 to Charles E. Bradley and Willis A. Gibbons. This solution includes rubber combined with hydrochloric acid and chlorine and is found 'to impart to paper articles a'W'ater-proof surface, and a surfaceparticularly resistant to the action of dye liquorsrat high temperatures.

The tube provided by the process above lmentioned, either with orlwithout the final step, maintains itsV form during the dyeing process, that is, is mechanically strong vand stiff. It is light in Weight, comparatively inexpensive as compared with metallic and composition tubes, and in general is a much more practical article of manufacture for the purpose intended than the metallic or composi-V tion1 tubes which have heretofore for the most part been utilized. It will be obvious, to one skilled in the art that minor vari'ations in the process may be made Without departing from 'its basic teachings or the scope of the claim defining the same.

Having thusy described the invention, what is claimed as new and desired to be secured by Letters Patent is:

The method of manufacturing paper cores adapted to support thread packages or Windings during dyeing and other operations in the textile industry, Which comprises coating the surfaces of a paper sheet with a latex containing paste, Winding the sheet into aJ tube,

the Wall of which is several plies in thickness, the plies being secured together by the latex containing paste, drying the tube thus formed, perforating the tube to provide open-

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