DE562433C - Process for the manufacture of single-ended viscose rayon - Google Patents

Description

GERMAN EMPIRE

ISSUED ON OCTOBER 26, 1932

REICH PATENT OFFICE

PATENT LETTERING

M 562433 CLASS 29 a GROUP

2p a V261. Date of publication of the patent grant: October 6th

United Glossstoff-Fabriken A.-G. in Wuppertal-ElberfelcP)

Process for the production of non-twisted viscose rayon

Patented in the German Empire on November 7, 1930

The invention relates to a process for the direct production of untwisted Viscose rayon in strand form. The word "immediately" means that the silk is without rewinding or reeling finished after treatment, oiled and sized and also dried in strand form, is won.

The method according to the invention is

ίο characterized in that the fresh coiled threads with crossing on a reel and the obtained in this way Strands are initially prevented and wrapped in liquid-permeable tissue, then in this state the washing and subjected to other aftertreatment baths, oiled or sized on them, finally dries and, after being freed from the filaments and the covering, unreeled and processed.

It has been suggested to use freshly spun rayon immediately to be applied to a roll-like winding body that can be reduced in size, in such a way that, through the continuous, tight winding of the threads, a tightly wound, A spinning cake-like package is created. This shape was chosen so that the wrap without a fit from Winding body can be removed; a winding in the well-known honeycomb shape has been discarded for the reason that it was found that the streak was in spite of it the Fitzung distorted and confused during follow-up treatment, which makes them either not at all or only badly.

If, however, the method according to the invention is used, it succeeds it is possible to achieve perfect results if the honeycomb wound Artificial silk threads not only tied, but also in liquid-permeable, for fabrics already proposed for other purposes can be used. With such a In the process, the above-mentioned problem does not occur, and a streak is obtained which can be rolled off completely smoothly and easily after the end of the treatment, especially since the strand while still wrapped in a treatment with oils or sizing agents are subjected, whereby the untwisted capillary threads of the web are combined and glued to form a shaft. The method according to the invention has the advantage over the known method that you don't have to resort to special rewinders, but the usual ones Can use reels.

The method according to the invention is described in more detail below.

The viscose silk threads precipitated using a spinning bath are under Crossing wound on a reel. Those are particularly suitable as spinning baths Baths that, in addition to sulfuric acid and sodium

*) The patent seeker indicated the following as the inventor: Dr Johann Josef Stöckly in Teltow-Seehof and Dr. August bread in Wuppertal-Elberfeld,

5G2433

sulfate also contain magnesium sulfate or (and) zinc sulfate, so baths that contain a Provide little shrinking silk when drying. The result of the winding-up dene strand, which can have the usual circumference of ι oo to 120 cm, is useful in a manner known per se on the reel, for example four to six times prevented, d. H. gefitzt. Then it is made into a woven fabric that is permeable to liquids or wrapped in knitted cloth.

When wrapping you can now proceed in such a way that the freshly spun and Tied strand decreases from the appropriately set up reel, folded flat and the elongated structure created in this way is wrapped in a cloth like a packet. One can also proceed in such a way that one goes to the λ-oraus on the reel to be filled annular wrapping strips appropriate to the circumference of the reel, e.g. B. in shape of trimmed round chair fabric sections. The strips can mediate Schnuiiaschen useful on the reel slats easily removable. On these ring-shaped strips of cloth, which one Have a suitable width for later wrapping and are lined up next to each other on the reel are, the individual strands of artificial silk are now spun directly on. If necessary, the Fitzfäden can even be Λ-oraus in the appropriate distribution placed on top of the ring-shaped wrapping cloths and temporarily fastened so that after spinning the strand they may already be used in the correct position to hold the strand. After the strand has been spun in sufficient strength and the ligation is carried out the individual strands are already wrapped on the reel by means of their corresponding ring-shaped wrapping strips, by laying the side edges of the strips over and around the strand from both sides. If necessary, the Overlapping edge can still be fastened to prevent it from being rolled up by tying it off. To this In this way, the wrapped strands are obtained in an annular shape.

The elongated strand packages described first or the elongated ones that are too similar Formed flat folded, ring-shaped wrapped strands are now in the wrapping cloths described the various wet treatment processes, such as washing, desulphurisation, bleaching, Säuems, reviving, subjected. For this purpose you can now use the packages expediently on stationary or moving perforated documents in a manner known per se using any desired wet treatment process subject by sprinkling or immersion. So you can z. B. to single or multiple layers Lay them in a row on perforated or sieve-like conveyor belts and one after the other pass through or under the various wet treatment baths. The packages can be single or multiple Pack layers also in horde-like, perforated transport boxes in the floor and allow them to act in a manner known per se exposure to the various treatment baths. To utilize the bath fluids several trays can be arranged one above the other, so that the same amount of liquid a series of hordes penetrates from top to bottom .. For the same purposes one can also use the washer extractor use.

The individual strand packages can be used to prevent any shifting of the threads inside the Avoid strands, individually or in whole layers next to one another and, if necessary, also packed on top of each other between perforated plates. It is important to ensure that that the plate material as well as otherwise the packaging and transport material for .The individual treatment baths are made of resistant material, including depending on 9c the special purposes aluminum, synthetic resin compounds, such as those under known as bakelite, aluminum coated with bakelite, Hard rubber and the like proven.

In the special case of the annularly wrapped spinning strand, the carry out the subsequent wet treatment in such a way that the annular- Forms like ordinary strands of artificial silk on strand washing machines known per se treated.

No matter what kind of wet treatment operations the wrapped Spinning strands have been made, they are now still wrapped in Condition oiled or finished. It may prove useful to the structures before oiling or finishing by allowing them to drain properly or by no Centrifugal to dehydrate to a certain extent. '

Used for finishing the strand packages in the still water-containing state water-soluble or at least water-emulsified oil or sizing preparations, such as not too diluted concentrates made from Turkish red oil, olein, prestabit oil, paraffin emulsions, Washing emulsions, soap solutions, in any case water-soluble oils or water-emulsified sizes, which are a do not show significant film formation. the

Claims (4)

562 43B sized strand packages are thrown off by the excess impregnating compound and still dried while wrapped. In a modification of the method described, one can also proceed in such a way that one the cleaned, post-treated and well washed, wrapped spinning strand first dries and only then oil or ίο arbitrates, whereby one then optionally In addition to the specified water-containing oils or sizing preparations, there are also water-free oils and use of sizing preparations. The structures so treated are • 5 then, if necessary, - a second one Times dried. The strand made of untwisted viscose silk produced by the process described are still in an unexpected ? .o good shape, so that after removing the wrapping cloth, you can easily can be unwound onto any suitable receiving organ. This result is in primarily wrapping up the spinning strand ? -5 in the designated wrapping cloths. The spinning strand can therefore either with or without the wrapping cloths are delivered directly to the customer in suitable packaging. P.VTE N TA NSPRÜ CHE: ι. Process for the production of untwisted viscose rayon, characterized in, that the freshly felled threads are wound onto a reel while crossing, the strand obtained is prevented, individually wraps into permeable tissue, in this state the washing and other post-treatment baths subdues, then oils or sizing and drying, whereupon the strand of the covering is released and unreeled. 2. The method according to claim 1, characterized in that the wrapping cloth in Shape of an annular, the circumference of the reel appropriate strip drawn before winding on the reel and optionally attached to it, the rayon directly onto the same on the reel and then hit the same on the reel. 3. The method according to claims 1 and 2, characterized in that the annular wrapped strand in a manner known per se on strand washing machines for washing and other post-treatment operations are subjected. 4. Process according to Claims 1 to 3, characterized in that the strand after the wet treatment operations and, if necessary, after partial dehydration Dried in the wrapped condition, only then oiled or finished and. if necessary, post-dried will. ΟκηΠ! ^τ ΓΚΤ IN "DKP.