US2024962A

US2024962A - Making of rayon

Info

Publication number: US2024962A
Application number: US672972A
Authority: US
Inventors: Beattey Earle J Richard
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-05-26
Filing date: 1933-05-26
Publication date: 1935-12-17
Anticipated expiration: 1952-12-17

Description

Dec. 17, 1935. v E R, BEATTEY 2,024,962

MAKING OF RAYON Filed May ze, 1955 ATM ' the same up,

Patented Dec. 17, 1935 nazisti UNITED STATES FATENT OFFICE 2,024,962 MAKING 0F RAYON Earle J. Richard Beattey, Edgewood, It. I.

This invention relates largely its objects the thread composed has for one of thread which, when Application May 26,

2 Claims.

to the production of a of rayon filaments, and provision of a Woven into a fabric, will chemical manner, rayon the desired non-creasing filaments in order that result may be obtained.

Another object of the invention is to so relate the rayon filaments give support one to bined elasticity may of a thread that they will the other that their combe brought into play for causing `these threads to resume a normal uncreased condition when Woven into fabric so that if a rayon fabric becomes wrinkled upon hanging the wrinkles will come out of the fabric in the same manner that they come out of fabrics made of animal fibers such as Wool and natural silk.

Another object the rayon filaments of the invention is to support by a thread or core of a different material in order that the composite thread may be straightened as ities and be better suited for to its elastic qualthe production of woven fabrics and garments therefrom.

A further object of the sion of a supporting core invention is the provifor a composite thread and the forcing of the rayon laments toward this core and into close contact therewith that these rayon filaments may be better supported and a composite thread provided having more desirable qualities for weaving into fabrics and formation of garments therefrom.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and

particularly pointed out in the appended claims.

In the accompanying drawing: Fig. l is a side elevation partly in section and largely diagrammatic for forming rayon shown therein.

Fig. 2 is a sectional of the layout of a machine filaments with my invention view through the spinneret and also diagrammatically showing my improved member in section for condensing the plurality of rayon filaments extruded through the spinneret.

cross-section of when my condensing filaments as they would appear devise is. mit used- 1933, Serial No. 672,972

(o1. is-c) In the use of rayon, which is a cellulose product usually formed by the viscose process using Wood pulp as the supply of cellulose, when formed into a garment it is found that the garment becomes creased through Wear and whereas, when a 5 garment is made of silk or Wool the hanging of the same upon a form or suitable support usually causes these wrinkles or creases to come out of the garment that, with the use of rayon these creases remain set to a far greater extent and l0 will not disappear from the garment under such similar treatment, and I have attributed this to the air spaces present in any rayon thread hetvveen the filaments thereof which occur to a far greater extent in a rayon thread than they do l5 in a silk thread, and I find that by manipulating the filaments of these rayon threads by twisting or the like after formed I do not materially reduce this air space to any effective extent as the filaments seem to be set in a certain spaced 20 relation after they emerge from the coagulating bath and attain their finished or formed state. This possibly may be by reason of the fact that the coagulating baths which contain other sulphate salts as Well as sulphuric acid cause the indentation of these filaments and an irregular formation and thus provide a multiplicity of air pockets. Further the individual rayon filaments possess but a relatively small amount of elasticity and thus in this spaced relation they cannot support themselves against creasings of a fabric when they are woven into this form and the fabric formed into a garment, and in order that this effect may be minimized to a material extent I have provided a means for forcing the fibers close together before they become set and While in a rather gelatinous state in the coagulating bath which, at this time, permits of their being molded or set closer together, and the air spaces about the fibers reduced so that as they emerge 40 from the coagulating bath they are in an assembled and supported condition to better assist each other in the elasticity which they have and resist the strains of folding or creasing to a far better extent, and in order that this property may 5 be further enhanced I may insert a core of thread formed of fibers of an animal nature such as silk or Wool, or even fibers of any supporting material that the desired properties minimizing creasing, when the thread is formed in a fabric, may be had, and the following is a detailed description of the present embodiment of this invention illustrating the preferred means by which these advantageous results may be accomplished.

With reference to the drawing I have illustrated in Fig. 1 a portion of is used This cellulose mixture is forced by a suitable pump 1n the usual manner through the candle engaging the'collar member I7 along the threads I8 to hold the same in engagement with the glass tube through the packing I9 as illustrated in Fig.

This spinneret is provided with a multiplicity ture or viscose 2| is forced coagulating bath II and thence is carried up through the guide 22 over a pulley 23 and into a aringportion 24 of the traverse tube 25 reciprocated by creased or folded. this elastic action may also be method. This thread or core the tube I3 and through the spinneret I4 having Also a thin film o1' rayonmay be formed as-a coat- By this arrangement ka composite thread isV provided which Will havethe combined elasticity of the different elements crowded one in close contact with the otheriand intocontact with the core of different material and will be better for knitting or fabrics where sharp bends occur.

by the terms of the I claim:

1. In an apparatus formaking rayon, a coagulating bath, a spinneret therein,

appended claims.

their extrusion fromfsaid spinneret.

2. In an apparatus fonmaking rayon, Ia coagulating bath, a -spin-neret thereinfand `a :member having entrance and discharge openings of difsion from said spinneret.

EARLE J. RICHARD BEATYIEY;