CH170408A - Process for treating the spun material in the production of rayon from viscose solution. - Google Patents
Process for treating the spun material in the production of rayon from viscose solution.Info
- Publication number
- CH170408A CH170408A CH170408DA CH170408A CH 170408 A CH170408 A CH 170408A CH 170408D A CH170408D A CH 170408DA CH 170408 A CH170408 A CH 170408A
- Authority
- CH
- Switzerland
- Prior art keywords
- rayon
- spun material
- treating
- production
- viscose solution
- Prior art date
Links
Landscapes
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Verfahren zur Behandlung des Spinngutes bei der Herstellung von Kunstseide aus Viskoselösung. Bei der Herstellung von künstlichen Fäden und ähnlichen Gebilden aus Viskoselösung verfährt man in der Technik in der Regel derart, dass man die künstlichen Gebilde in einer sauren Flüssigkeit zur Ausscheidung bringt. Die Spinnmasse ist wohl koaguliert, aber noch nicht gebrauchsfertig, weil das Spinngut sich noch im ungefestigten gequol lenen Zustand befindet.
Die Erfindung betrifft nun ein Verfahren zur Behandlung des Spinngutes bei der Her stellung von Kunstseide aus Viskoselösung, bei welcher das aus einem sauren Fällungs- bade heraustretende Spinngut, während es noch nicht ganz erhärtet ist; unmittelbar durch ein seine Verfestigung vervollständigendes heisses Wasserbad geleitet wird. Dieses Ver fahren kennzeichnet sich dadurch, dass das Spinngut beim Durchgang durch das heisse Wasserbad einer starken Spannung ausgesetzt und nach Verlassen des Bades auf Aufwickel- spulen geleitet wird.
Man kann beispielsweise in folgender Weise verfahren Das aus einer sauren Fällflüssigkeit aus tretende Spinngut wird, während es noch nicht ganz erhärtet ist, sofort in einem heissen fliessenden Wasserbade von ca.<B>700</B> C eine Strecke von 50 cm hindurchgezogen und dabei gleichzeitig einer starken Spannung ausge setzt. Zu diesem Zwecke leitet man das Spinngut z. B. über Rollen oder andere ge eignete Führungen, die es dadurch, dass sie seinen Weg verlängern und den Reibungs widerstand vergrössern, einer Spannung unter werfen.
Es ist an sich bekannt, die künstlichen Fäden zu strecken. Dieser Vorgang vollzieht sich aber bei den bekannten Verfahren im ersten Fällungsbade, in welchem der Faden noch einen vollkommen weichen und elasti schen Charakter hat, und bezweckt in erster Linie den Faden zu einer grösseren Feinheit auszuziehen. Beim beschriebenen Verfahren dagegen wird das Spinngut, das bereits stärker er härtet ist, unter der Einwirkung der heissen wässerigen Flüssigkeit gespannt, wobei leine nennenswerte Verringerung des Querschnittes auftritt. Dabei findet eine wesentliche Er höhung der Festigkeit statt, deren Erklärung vermutlich in einer Verschiebung und Parallel stellung der Zelluloseteilchen (Micelle) zu suchen ist.
Process for treating the spun material in the production of rayon from viscose solution. In the production of artificial threads and similar structures from viscose solution, the technique generally used in technology is to excrete the artificial structures in an acidic liquid. The spinning mass is probably coagulated, but not yet ready for use because the spinning material is still in the unsolidified, swollen state.
The invention now relates to a method for treating the spun material in the manufacture of rayon from viscose solution, in which the spun material emerging from an acidic precipitation bath while it is not yet fully hardened; is passed directly through a hot water bath which completes its solidification. This process is characterized by the fact that the spun material is subjected to strong tension as it passes through the hot water bath and, after leaving the bath, is directed onto winding bobbins.
One can proceed, for example, in the following way: The spinning material emerging from an acidic precipitating liquid is immediately pulled through a distance of 50 cm in a hot, flowing water bath of approx. 700 C while it has not yet completely hardened at the same time exposed to great tension. For this purpose, the spun material is passed z. B. on roles or other ge suitable guides that it by the fact that they extend its path and increase the friction resistance, throw a tension under.
It is known per se to stretch the artificial threads. In the known processes, however, this process takes place in the first precipitation bath, in which the thread still has a completely soft and elastic character, and its primary purpose is to pull the thread out to a greater fineness. In the method described, on the other hand, the spun material, which has already hardened to a greater extent, is stretched under the action of the hot aqueous liquid, with a noticeable reduction in cross-section occurring. A substantial increase in strength takes place, the explanation of which is probably to be sought in a shift and parallel position of the cellulose particles (micelles).
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE170408X | 1928-08-09 | ||
DE200329X | 1929-03-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH170408A true CH170408A (en) | 1934-07-15 |
Family
ID=25754691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH170408D CH170408A (en) | 1928-08-09 | 1929-06-21 | Process for treating the spun material in the production of rayon from viscose solution. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH170408A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767434C (en) * | 1938-10-04 | 1952-08-07 | Spinnstofffabrik Zehlendorf A | Process for the production of artificial threads with particularly high wet strength using the viscose process |
-
1929
- 1929-06-21 CH CH170408D patent/CH170408A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE767434C (en) * | 1938-10-04 | 1952-08-07 | Spinnstofffabrik Zehlendorf A | Process for the production of artificial threads with particularly high wet strength using the viscose process |
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