US2065981A - Drying artificial silk packages - Google Patents

Description

Dec. 29, 1936.

K. MOOG DRYING ARTIFICIAL SILK PACKAGES Filed June 27, vv17.934

INVENTOR BY E.

ATTORNEY Patented Dec. 29, 1936 UNIT-ED STATES PATENT OFFICE 2,065,981 l DRYING ARTIFICIAL SILK PACKAGES Karl Moog, Obernburg-on-the-Main, Germany, i

assignor to American Enka Corporation, Enka, N. C., a corporation of Delaware Application June 27, 1934, Serial No. 732,715 'In Germany July 4, 1933 2. claims. (C1. 34-24) 'This invention relates to a process of and an In the past, it has been the practice tofsubject freshly spun packages of artificial silk td washing and other similar wet treating processes while in package form. Subsequent to the wet treatment of the packages they weredried and according to the older procedures during. the drying the packages were retained in the spinning pots or on bobbins, or as an alternativethe packages were placed on drying supports such as the supports employed when drying skeins of artificial silk. Another of the heretofore used methods of drying the packages involved the flattening of the cakes together and the passing of these cakes 20 onto drying frames. lIn all of these past modes of operation the drying progressed throughout the bodies of the packages in substantially all directions. v l

One decided disadvantage encountered in the former methods of drying'the artificial silk packages was that the thread in the .dried packages did not possess uniform 'dyeuabso'rptive characteristics. The reason-for`nonuniform dyeing rof l the thread in packages which were dried under conditions as above set forth is attributable to- ,fthe variable contraction which occurred throughout the respective packages vduring such drying. 'Y

When a drying agent is permitted to contact withv a'. packageof artificial silk from all directions, the outer layers v of the package' cannot contract to the same extent as the inner layersthereof since the outer layers vcannot shrink freelyvdu'e to the interior ofthe package being still moist and more 4 or less 'rigid with the result that the .filaments or provision of `an apparatus wherein the drying medium o r agent is passed 4through the packages from the inside to the outside only.

Other advantages and objects will be apparent from the following detailed description when considered in -connection Vwith the accompanying 55 drawing wherein:

thread of the outer layers meet substantial 're- Fig.l 1 is a, perspective view of an apparatus embodied in the invention,

Fig. 2`is a cross section taken on line 2-2 of Figi illustrating the position of the spacer plates with respect to the artificial silk package prior to the drying operation, and

Fig. 3 isa view similar to Fig. 2 showing the relation of the spaced plates with respect'to the artificial silk packages after the vdrying operation has been substantially completed.

'I'he invention may be more readily understood by referring 'to the drawing wherein l0 indicates a metallic container having a base I I. This base II contains a plurality of orifices I2 which are arranged in such a way that the artificial silk packages I3 may be placed in juxta-position thereon with their central openings I4 arranged gp directly above the orifices I2.

A ledge or-ridge-like support I5 extends inwardly from the interior walls of the container III and the ledge may be formed integral with the container walls or it may be adjustably fastened to the walls'. The ledge is arranged parallel Yto thebase member I I and is arranged at ahdistance therefrom slightly le'ss than the height of the respective artificial silk packages prior to their vdrying so that a spacer plate lor support YI6 may come to rest upon the ledge and be sup- -ported thereby after the packages on the base are dried. A series of the spacer plates or supports I6 are employed when it is desired to dry a plurality of layers of artificial silk packages simultaneously by having the layers positioned one above the other.

Each ofthe spacer plate elements I6 are constructed with a base I'I and sides I8, and in order to successfully'practice the present process the height of the sides I8 is predetermined and is slightly less than the height of the artificial silk packages prior to their being dried. The initial difference in the height of the spacer plates and the height of the packages is such that the heights after the drying of the packages are substantially the same.

Therefore,V when these spacer plates` I6 are first placed upon the respective layers .of

packages, vthe packages themselves will sustain the weight of the spacer plates and other packages which may be positioned thereabove.

Each ofthe spacer plates I6, has its basel I1 formed with a series of orifices I9 in such a manner that when several layers of. packages are positioned within the container, the axes of .the

packages may be axially arranged with each vertical row having their center openings communicating through the respective orifices in the spacer plates.

It will be clear from the above that the appa- -bottom of the container, or vice versa, the drying of each package takes place in a substantially uniform manner from the inside to the outside thereof. Due to this manner of drying, the inner layers of filaments or thread in the respective packages commence drying and therefore shrink first and as the drying proceeds to the outer part of the package the resistance from the inner part will consequently be eliminated and will therefore permit of uniform contraction throughout the body of the package.

l. In practicing the present method in the apparatus referred to in the drawing, it will be seen that when a drying medium such as warm air is passed through the cakes or packages, the heights `of the respective cakes will gradually decrease, and the base l1, of each spacer plate will accordingly gradually sink until it is supported by the sides I8 of the spacer plate next below. By such an arrangement, the paths of the drying medium are at all times restricted to the zone within the channelJ formed by the thread free space within the interior of the vertical rows of packages and the openings of the spacer plates therebetween, and therefore, the drying action will at all times be substantially completely taking r place from the inside to the outside of the pack- .used upon the upper layer of packages in v.place of a type of spacer plate otherwise employed.

Whereas the drawing discloses the side members of each of the spacer plates as constituting the supports for the adjacent spacer plate thereabove upon the completion of the drying operation, any other suitable supporting means may be employed which will provide for the successful performance of the drying action when carried out in accordance with the present invention.

What I claim is: y

1. The method of drying packages of artificial silk the respective interiors of which are in unsupported condition comprising arranging a. plurality of wet interiorly unsupported packages of articial silk in a vertical column with spacer plates therebetween, with the packages each supporting the column thereabove, passing a drying medium centrally through the column of packages while avoiding any substantial contact of the drying medium with-the exterior surfaces of the packages, continuing -the passing of the ldrying medium through the interior of the column of packages, and thereby gradually effecting a progressive drying of the packages from their interiors to their respective exteriors with the resultant contraction and decrease in the height of the respective packages, and eiecting the transfer of the load of the/column above from the lower packages shortly prior to the period of maximum contraction of the packages.

2. The method of drying packages of artificial silk the respective interiors of which are in unsupported condition comprising arranging a below the same and to move downwardly in accordance with the contraction of the respective packages, and gradually relieving each of the contracted packages of the weight of such spaccil plates and packages as exist thereabove by otherwise supporting each spacer plate when it is `moved into a predetermined spaced relation with respect to the next lower spacer plate, whereby substantially air-tight passages defined by the thread free interiors of the packages are maintained during the drying period with the resultant progressive drying of the packages from the interior to the exterior thereof.

- KARL MOOG.

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