DE595558C - Process for the production and aftertreatment of rayon, especially viscose - Google Patents

Description

It is already known to be freshly spun Laying rayon threads in loops in a slowly rotating spinning pot. These However, four-way travelers have not been able to become naturalized in practice because none Possibility was available, the collected in the spinning pot, lying in loose loops Post-treat thread masses and work up in such a way that the yarn is at the end winding, twisting or reeling it into an endless thread.

The present invention now relates to a method for production and aftertreatment from artificial silk, after which the freshly spun thread in a slowly rotating, perforated spinning pot lined with cloths for wrapping the web in loose loops, completely treated and finally removed immediately the pot is worked up by reeling, winding or the like. The procedure is in-first Line for viscose silk, but also applicable to other wet or dry spinning processes.

It is known per se to bring inserts into spinning pots, partly for the purpose of To balance the spinning pot with rapid rotation, partly around the one formed in the pot To be able to lift out the spinning cake easily and quickly after the end of the spinning process. In contrast, the invention is a slowly rotating spinning pot in which the thread masses are loose Loops are placed so that balancing the pot is out of the question. In addition, the thread masses are not lifted out of the pot, but after the Wrapping in cloths in the pot itself, washed, treated and finished.

On the other hand, it is known to post spinning cakes formed in rapidly rotating pots after removal from the pot to wrap with a cloth so that an annular body provided with an inner opening arises. In contrast, in the invention, the yarn masses in the pot itself are in loosely wrapped in a cloth so as to avoid tangling the threads during the liquid treatment to avoid in the spinning pot.

The new method is used to pull the threads off the spinning device expediently a toothed take-up roller, its use per se in the rayon industry for pulling off sutures is known. The threads fall from this take-off roller located above the collecting pot into the slowly rotating spinning pot. Instead of directly from the take-off roller, the thread also via a thread guide arranged above the collecting pot to the depositing point be directed.

The spinning pot itself can be removed from its drive plate on which it stands is driven slowly. So that the thread

Grind in the spinning pot take on the desired shape and the pot in the desired Fill in the way, the spinning pot receives in a known "way either itself next to the revolving movement is a reciprocating horizontal movement, or but the thread falling into the spinning pot is passed through a thread guide, the a horizontally directed traversing movement ίο is issued. Finally, the take-off roller perform a reciprocating horizontal movement yourself.

Another improvement is that you have the spinning pot together with the x5 rotating plate, which drives it and on which he stands, makes the height adjustable. Hierchirch it is possible at as the pot becomes more full, the same distance between the take-off roller and the upper side to maintain the thread accumulation. Likewise, one can also check the altitude of the event Move the filing thread guide to be used.

The thread masses accumulated in the spinning pot become in the same with special Advantageously washed and treated by sprinkling, with the viscose process in particular, desulphurisation, bleaching, acidifying, and finishing can also come into question. For this purpose, the spinning pot is perforated in the bottom, and the interior of the same, in particular also the floor is covered with a covering of permeable cloth, e.g. B. nettle cloth, Rayon fabric, laid out. Here you can give this covering the shape of a closed bottom, give a sack suitable for the interior of the spinning pot, and choose the upper end of the sack so long that it is over the upper end during filling The edge of the spinning pot is turned upside down and after filling is sufficient to cover the whole spinning cake to cover up above. The fully spun pots are removed from their turntables after they have been filled removed and from above, either 4-5 individually or in a known manner several stacked like a column, sprinkled with water. The pots have to this latter Purpose at the top an extension so that the one pot comfortably fits into the top Edge of the other can be placed in it. You can also use it in every single pot insert a perforated lid that is placed directly on the spinning mass or on the Protective cloth comes to lie. In this arrangement, any desired and any necessary wet treatments are carried out made on the artificial silk one after the other. Finally, the pot is allowed to drain or is thrown out. Then one treats .60 with an oil or sizing bath, the amount and strength of which is such that that proper and even arbitration or oiling takes place. After repeated dripping or spinning, it is dried. The pots, which are expediently perforated on all sides, can be brought into the known drying chambers or drying tunnels and expose to the action of warm air, or you can use the pots, which are only perforated on the bottom, in the already described, Immediately use a column-like form for drying by adding the dry air through these columns either from the bottom up or from the top sends down through,

Instead of the wet treatment by sprinkling, the in the spinning pot, Spinning masses wrapped in protective cloths and weighted down if necessary be subjected to other washing processes known per se, e.g. B. by diving or Leaching or rinsing when the spinning pot is stationary or moving, when it is stationary or moving liquid.

It has also been found that if one wants to obtain a perfect viscose silk, one must also pay attention to the spinning bath used. As has been found, the best spinning baths are those which are capable of supplying viscose silk which shrinks as little as possible on drying. This gives the goods the desired shine, remains soft, elastic, firm and does not pucker, even if they are washed and dried without tension. By sizing the thread mass it is achieved that the individual thread shafts get cohesion and that it is subsequently possible to work up a flawless, fluff-free silk. The thread masses so manufacturers _lO o asked, practically untwisted can be coiled without hesitation wound from the spinning pot out or and moved to any presentation and winding shape. _OK 5

When winding or winding the threads directly out of the pot, this can, like known, rotated at approximately the same speed as when spinning the threads are, of course, in the opposite no direction.

The present combination process is the first time to work up from loose, endless rayon threads obtained in a slowly rotating spinning pot became possible. The present process creates a new type of specialty product won, which has very special properties .and significant advantages over the previously known products. In the present treatment, the artificial silk thread in no single sta-

dium of its production and processing any mechanical stresses exposed. In particular, the shrinkage process that occurs in each of the Rayon threads obtained by the wet spinning process do not occur in any way with special needs. As a result of the free shrinkability of the rayon thread in the method according to the invention, a

ίο perfectly balanced thread obtained, which with regard to its coloring capacity, its elongation and strength properties, those obtained so far, which were more or less mechanically stressed in the aftertreatment Threads significantly surmounted. This process is particularly important for the production of fine-thread artificial silk Benefits on.

As a result of the loose, loose accumulation of the thread in the spinning pot, washing succeeds and post-treatment of the silk using wrapping cloths in the shortest possible time and using a minimum of treatment liquid; because the loose thread layers do not offer any resistance to the penetration of the liquid, so that the washing process is significantly faster and more thorough than with the well-known spinning cake, in which the threads are packed tightly lie on one another.

Claims (2)

Patent claims: 1. Process for the production and aftertreatment of rayon, in particular made of viscose, characterized in that the freshly spun thread ends slowly in a "iimlatif", perforated, with Cloths for wrapping the web of lined spinning pot in loose loops , filed, completely after-treated in it and finally by reeling or Winding is worked up directly from the pot. 2. The method according to claim 1, characterized in that when placing the Thread in the pot, the distance between the delivery roll or the thread guide and the placement point by adjusting the spin pot, the delivery roll or the thread guide or both in a vertical position Direction is kept the same.