DE1669547A1 - Process for spinning viscose yon threads - Google Patents

Description

PATENT ANWXLTE

DR. E. WIEGAND DIPL.-iNG. W. NIEMANN 1669547

DR. M. KÖHLER DIPL-ING. C. GERNHARDT MDNCHEN HAMBURG “ _Ä

Cc. Sep 1967

TELEPHONE: 395314 2000 HAMB U RG 50, TELEGRAMS: KARPATENT KÖNIGSTRASSE 28

W. 15269/67 12 / Es

Teijin Limited
Osaka (Japan)

Process for spinning viscose rayon threads.

The invention relates to a method for spinning viscose rayon threads at high speed with high wet modulus, and its purpose is to use a horizontal spinning machine at a spinning speed to spin at least 80 m / min viscose rayon threads that have a high NaSmodule, excellent grip and good shine to have.

Heretofore, high wet modulus polynosic staple fibers have been made by a process such as in published Japanese patent application 57Vl 95 ^ or the corresponding French patent specification 1 111 571 is shown. However, the spinning speed is in this process, compared to the spinning speed of ordinary regular rayon, and extremely low

009U0 / 1782

is, for example, only 10 to 20 m / min. Since this method does not allow an increased productivity to be achieved it is not suitable for the production of endless threads. Therefore, rayon filaments having a high wet modulus are suitable for spinning a high-speed spinning process with a perpendicular tube has been proposed, such as, for example is shown in the Belgian patent specification 665 4j59, however t. the spinning mechanism used is extremely complicated, and the process has from an operational standpoint many disadvantages.

On the basis of extensive investigations it has been found that the above-mentioned disadvantages can be overcome by the invention. Accordingly, the invention is directed to a method by which viscose yon threads having a high wet modulus can be spun at high speed. According to the invention, this method is characterized in that a viscose is used which has a degree of polymerization between 400 and 700 and a gamma value of 65 to 80 at the point of spinning and in which the relationship between the average degree of polymerization, the cellulose content and the total alkali content the viscose satisfies the following two equations
1) 9.5 x 10 ² -DP ,, CC. 10 ² <l, 3. 10 ³ - 1.5 DP

2) 200+ DP / TA. 10 ⁵ <'450+ DP,

^S CC
in mean:

DP is the mean degree of polymerisation of the viscose,

00084 9/1782

BATH ORIGINAL

CC is the cellulose content of the viscose in percent and TA the total alkali content of the viscose in percent " dafl this viscose to 35 bis immediately before spinning 60 ° C and then extruded into a spinning bath, which contains sulfuric acid in low concentration and sulfates in low concentration, to the extent of the Set the solvent removal from the threads at the first godet to £ 40 to £ 60, and then the threads be drawn, the spinning at a spinning speed of at least 80 m / min using a horizontal - Spinning machine is carried out.

The invention is explained below with reference to the drawing, for example.

Flg. Fig. 1 is a graph showing an example of the relationship between the amount of solvent removal of the threads on the first godet and the fiber properties.

Flg. 2a and 2b illustrate the zones of the middle Degree of polymerization D "P, the cellulose content CC and the total alkali content TA of the Invention used viscose.

Fig. 3 is a diagram showing an example of the relationship between the heating temperature immediately before spinning and the extent to which the solvent is removed from the first godet, the washability

009849/1782

and stretchability.

So far, the main aspect has been the technical improvement of the process for spinning viscosereyon aimed at the control of the coagulation state and the regeneration of the viscose.

Viscose consists of cellulose ^ xanthogenat, which in a Alkali solution is dissolved, and the fiber-forming process is a solution initiation distant diffusion with a conversion of the Cellulose xanthate to cellulose.

The investigations into the mechanism of spinning cellulose have mainly focused on coagulation and regeneration of cellulose directed.

Based on the finding "that the amount of solvent removal in the early stages of spinning is one has a much greater influence on the properties of the fibers obtained than coagulation and regeneration, and as the result of numerous attempts in which the various factors such as the viecose composition, the Degree of polymerization and the oanea value of the viscose, the The temperature to which the viscose was heated and the Composition of the spinning bath, it has been found that the best results, i.e. the optimal fiber properties, are achieved by high speed spinning should be achieved if the amount of solvent removal from the threads on the first GJJaette

009849/1702 ORIGINAL BATHROOM

40 to 6θ # bo wore.

The results of an example of the aforementioned experiments are given in PIg. 1 graphically illustrated. Tn Pig. The dashed curve a shows the dry elongation in%, the solid curve b the dry strength in g / d and the dash-dotted curve c the HaO strength g / d at 5 # elongation.

Diö £ 5o results were Ή and ^r {ji geändertmirda, wKhi'and held the other factors constant at carrying out the tests · Serhalten where the Oesanitalkaligehnlt of Viscose awlscshttn. The graphical Darstdlurig shows the relationship between the received and the Fassrelgomiohaften in% aiuigtuliückten Auamaü Jer Lb'sungsraittalontt'ernung of the PUdfiii at the first Ga Leb ta, as shown in FLg ₁ 1 I Orué usual, is -4Li were Fasere johaf strength do , di .-> srhaLt ^ n were indicated, if the extent αβί * solution inlbbBliinti'ernuru-T ho to 00 ^ »tjf.Mig, by emphasized üplUi; en, and sLe were denigewüß Barh desired, the preliminary tests carried out were not ^ n limited to those in which the cleavage degree was considered, but experiments were also carried out with regard to the other factors, and completely similar tendencies were observed. The received bwaondersn niiiiiöFlauchten adverts are given in full in u & t, the following Bsispiulyn. The iiiöi ¹ vervidndetö Bsaeiehnmig '■ extent of solution means ttelbeUein-et das Ansmad, in ' »/« loheai the LtJ

0 (.; ^F i It :, ν / 1 7 f. 1

(the aqueous alkali solution) is expelled from the viscose, and it represents the ratio of the amount of solvent removed during spinning to the amount of solvent of the original viscose, expressed in percent by weight ₉

If it is assumed that the cellulose content of the viscose is C, / £, the cellulose content of the thread during spinning is Cp #, and the extent of solvent removal is B.% , then the following applies

for the ratio the equation
(C ₂ - C ₁ ) *

^ ^{R x lü} *

The Cüllulositigehalt of the viscose (C ^ i) is on usual Catfish determined during the cellulose content during the Spinning (C «#) on the following catfish ·? is determined.

P ^ twa 2g Düss located in öelziiBfcand thread, which eat collected in the atufe to be in which the measurement is performed, are immersed in "ine ä Iegekühlte, the decomposition stopping solution for about 50 minutes then centrifuged for 10 Hinuten to the to remove excess liquid, and then exactly to obtain the oil weight (A gram),

Thereafter, this sample is immersed in an aqueous sulfuric acid oil solution with a concentration of 100 g / l for 10 minutes in order to carry out the regeneration completely. This is followed by washing with water, drying for 3 hours at 100 ° -105 ° C., and precise weighing of the product to obtain the weight fB grams. The cellulose content C ₂ Ji is then derived from the

BAD ORiGiNAL

equation

4) C ₂ - -f- x 100 * calculated.

Once the values for C ₁ and C _{2 are obtained} as described above, the amount of solvent removal (R) can be easily calculated from Equation 3) given above.

If only the spinning speed is increased when spinning rayon threads with a high dimensional modulus, it will It is necessary to increase the sulphuric acid concentration in the spinning bath, and at the same time the extent increases the solvent removal to the point of scattering to a value above 6o *, so that the desired fiber properties cannot be obtained Extent of solvent removal is greater than 60 *, is the exerted on the threads «effect of the greening by stretching slight» ο that the most satisfied! cannot be obtained. On the other hand, in the | As a rule, no satisfactory pasere properties are obtained either

.5,

if the amount of solvent removal is below 40 * is because then the orientation of the molecular chains is not caused during the stretching *, so that the strength and the elongation are low.

To remove the solution from the sausage galette set a value la range from 40 to 60 * so that the

^009849/1782 UDOWiMM.

- ⁸ - 166954V

desirable good fiber properties in spinning with high The following three must be obtained * Conditions are taken into account.

The first condition concerns the composition of the Viscose. There are numerous attempts with regard to the mean degree of polymerisation SF- of the viscose, the cellulose content CC and total alkali TA of the Viscode have been carried out and it has been found to give the desired results can be obtained when the average degree of polymerization is in the range from 400 to 700 and when the mutual relationships between these three factors are such are that they fall into the zone that In Pig. 2a and 2b the oblique lines is indicated. If this zone is represented by mathematical expressions, the above will be Equations 1) and 2) mentioned, which correspond to FIGS. 2a and 2b, respectively.

As shown in Figures 2a and 2b and equations 1) and 2) shows, there is a connection between the cellulose content CC and the average degree of polymerization SF of the viscose " and although the cellulose content is in the range of 2.5 Can change to £ 7 »8, a range from 4 to 6jf is special desired. On the other hand, there is a connection between the Total alkali content TA of the viscose and the average polymer ion grade 5F of the viscose, and although the ratio TA / CC can vary in the range from 0.6 to 1.15

009849/1782.

BATH ORIGINAL

a range from 0.7 to 0.9 is particularly preferred.

When the average degree of polymerization of the viscose and If their cellulose content is above the aforementioned prescribed range, not only does the viscosity of the viscose decrease but the coagulation speed and the regeneration speed also become large, and this leads to the extent that the amount of solvent removal R at the first godet is outside the range of 40 to 60 #, "

so that wanted fiber properties are not obtained can.

On the other hand, if the average degree of polymerization of the viscose and its cellulose content is below the prescribed one Range, not only does the viscosity of the viscose decrease to a value smaller than that for the stretching of the threads after they have been ejected from the 3plhn-d-ise is suitable, but it also follows. deleterious effects on fiber properties, in particular g.Ihen the cellulose content is low, the coagulation »- ' and regeneration does not go smoothly as the supply of the viscose to make filaments of a given denier increases.

Furthermore, if the alkali content of the viscose is above the prescribed range, a satisfactory one may occur Spinning cannot be preserved because of insufficient coagulation and regeneration. On the other hand, if the alkali content of the viscose

009849/1782 _BM > ORDINAL

is below the prescribed range mentioned above, the viscosity of the viscose becomes large, so that its spinnability is adversely affected.

Accordingly, as described above, the Cellulose content and the alkali content of the viscose are chosen so that they are in accordance with the mean The degree of polymerization of the viscose are within their correct ranges.

The second condition concerns the ripening of the viscose. It has been found that the oamma value of the viscose to the The time of their spinning must be in the range of 65 to 80.

If the Gauna value of the viscose is less than 65, the solvent removal on the first godet is less than 40 £, whereas if the gamma value is greater than 80, the solvent removal on the first godet is greater than 60 £. Both cases, which represent deviations from the range according to the invention, lead to a deterioration in the fiber properties.

The third condition consists in the requirement that the viscose To be heated to 55 to 60 ° C immediately before spinning.

In the case of high wet modulus rayon, the viscosity is the viscose is relatively high because of its high degree of polymerization, and with the increase in the spinning speed has the viscosity of the viscose at the point of its extrusion

^009849/1782

a very great effect on the spinning condition.

The results of an experiment conducted specifically to show the relationship among the heating temperature, the settability, the stretchability and the amount of solvent removal are graphically illustrated in FIG. In FIG. 3, the dashed curve c represents the spinnability (%), the solid curve d the stretchability (%) and the dash-dotted curve e the extent of solvent removal (Ji).

This experiment was carried out under the following conditions.

The viscose, which had a mean polyacrylate degree of 530, a cellulose content of 50%, an oeset alkali content of 4.4% and a gamaa value of 73 »µm, was made from a spinneret with 75 holes each with a diameter of 0, 06 im had, la extruded a spinning bath, which had a temperature of 50 ° C and 5 * 7Ji Sulfuric acid, 0.02 % zinc sulphate and 3fc> % sodium sulphate »where the immersion length was 30cm *

As used herein, the stretchability is a value which is the percentage of the relative peripheral speed of the second godet to that of the first godet represents a breakage of single threads that occurs between the first and the second Oalette when the peripheral speed of the first Oalette is kept constant and the

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the second godet is increased.

The spinnability is a value that represents the percentage of the circumferential speed of the first godet to the linear one Speed of the viscose extruded from the spinneret in the case of a thread breakage represents «which occurs between the spinneret and the first godet if the linear speed of the yisoose extruded from the nozzle is kept constant and the peripheral speed of the first godet is increased.

According to the invention, the viscose is extruded into a spinning bath which contains sulfuric acid in a low concentration and sulfates in a low concentration, while the aforementioned conditions are observed. With regard to the composition of the spinning bath, it is preferred that the concentration of sulfuric acid be for example 4 to 6%, that of zinc sulfate for example 0.001 to 0.1 % and that of sodium sulfate for example 3 to 6% . On the other hand, the temperature of the spinning bath is preferably in the range of J> 0 to 60 ° C. A draw ratio of, for example, 1.2 to 1.8 is desirable according to the invention.

According to the invention, viscose rayon threads with more excellent hand, good gloss and high wet modulus can be obtained so far could only be generated at very low speeds, at a high speed, for example at least m / min using a horizontal machine such as E.g. a Topham-Spinnmaschlne spun

009849/1782 ^ßAD

will. The spinning speed can still be easily adjusted at such a high speed up to about 180 m / min can be increased, and also Pasern with completely satisfactory Properties are obtained.

The invention is applicable to single threads with a denier of 0.7 to 5 * 0 and to threads in a large total denier range of, for example, J> 0 to 1000 den. Therefore

it
it is possible according to the invention to obtain even products which have an overall denier value as fine as J5o den, and yet have sufficient strength.

The invention is illustrated below by means of examples explained in more detail.

example 1

Alkali cellulose obtained by dipping pulp e in an alkali and crushing it was made for 2 hours aged at 25 ° C after which 45 # based on carbon disulfide the cellulose were added, followed by a reaction for 3 hours at 25 ° C, and then the Cellulose & anthogenate dissolved in a dilute alkali. The total alkali content was kept at 3.75 #, and it three classes of viscose were prepared in which the cellulose content 4.1 or 5> 0 # (present invention) and 6.0Ji fraud. In addition, a fourth class was prepared in which the cellulose content 5, OJi and the total alkali content 3 * 24 # fraud. In the four cases the viscose was medium

009849/1782

Degree of polymerization of 520.

These viscose were filtered and degassed and then each viscose, which had a gamma value of 75 at the time of spinning, was heated to 45 ° C. immediately before spinning and from a spinneret with 75 holes, each of which had a diameter of 0.06 mm , spun in a spinning bath of ^ 5 ° C, which contained 5.1Jf sulfuric acid, 0.0025% zinc sulfate and K% sodium sulfate, the immersion length was 30 cm. The spinning was carried out at a speed of 125 m / min with a draw ratio between the first and second godets of 1.5 to obtain a rayongam with a total denier of 75.

The results of the tests and the properties of the obtained yarn are shown in Table I below reproduced. The number of breaks given in the table is the number of breaks in 24 hours of spinning while the number of bulges or thickenings represents the number of thickenings in the yarn per 10,000 m.

Table I.

1 Attempt no.
(Invention)
2 3 5.0 4th * Cellulose content of the viscose
CC in % 4.1 5.0 3.2 * 6.0 Total alkali content of the Vis
cose TA in % 3.75 3.75 0.63 3.75 TA / CC 0.91 0.75 520 0.63 medium polymerization
degree of viscose 520 520 520 '009849/1782

BATH ORIGINAL

Ausaafl the solutions! Ttel-
removal from the threads
at the first godet in % 34 51 67 69 Number of breaks in 24 hours 0.67 0 _t 04 1.64 2.73 Number of thickenings
10000 β each 0.55 0.11 2.13 35.4 Trookenfestlgkelt in g / d 2.45 2.93 2.87 2.21 Wet strength in g / d l _r 50 l _r 96 l _r 84 1.19 Dry elongation in % 8.9 9/3 7.9 7.3 Wet elongation in % 9.4 10.3 9.0 8.6 Swelling value in % 116 85 125 132 Wet strength (g / d) at
5% elongation 0.88 IpOl 0.78 0.70

It is advisable that the means of the procedure geeäfl values obtained according to the invention with regard to the spinning state and the fiber properties are considerably better.

Example 2

Alkali cellulose, which is duroh dipping pulp in a Alkali and crushing was obtained, was allowed to mature for 2 hours, where 46j < Carbon disulfide based on the cellulose, were added, whereupon over 3 hours a reaction at 25 ° C follows.

Three classes of viscose were prepared, namely by dissolving the cellulose xanthate in a dilute alkali, adjusting the cellulose content to a constant value of 4.5 % and adjusting the total alkali content to 3.15 or 3 * 42 and 4.5%. , the Polymerisationegrad the viscose was in all three cases 52o.

009849/1782

BATH ORIGINAL

After filtering and degassing, each of these viscoses, which had a gamma value of 72 at the time of spinning, was heated to 50 ° C. immediately before spinning and from a spinneret with 75 holes, each of which was now 0.06 in diameter, in spun a spinning bath at 50 ° C, which contained 5.3 % sulfuric acid, 0.025% zinc sulphate and 3.0% sodium sulphate, the immersion length being 30 cm. It was spun at a speed of 125 n / min with a draw ratio between the first and the second godet of 1.35 in order to obtain a rayon yarn with an oesamt denier of 75. The results are given in Table II below.

Table II

Attempt no.

12 3 (invention)

Cellulose content of the Viscose CC in %

Total alkali content of the VIsccse TA in %

TA / 70

mean polymerization

the viscose

Extent of "1., r solvent" removal from the threads on the first godet in %

Number of breaks in 24 hours

Number of thickenings per 10,000 β

Dry strength in g / d

4.5

4.5

4.5

• 3.15 3.42 4.59 0.70 0.76 1.00 , 52o 52o 52o 75 58 38 i | 7ö 0.06 0.52 27.3 0.20 5.95 2.26 2.91 2 _; l6

009849/1782

BAD ORfGINAL

Wet strength in g / d 1.20 1.94 1.05 Dry elongation in % 8.0 9/1 8 _T 2 Wet elongation in % 9.5 10.0 9.7 Swelling value in % 110 90 128 Wet strength in g / d at 5 # strain 0.58 1.00 0.53

It can be seen that in practicing the invention the spinning condition and fiber properties are excellent.

Example 3

Viscose with a cellulose content of 5> 0 #, a Total alkali content of 3 »75 # and a degree of polymerization of 520, which was prepared as in Example 1, was changed in its degree of ripeness (gamma value) and under the conditions of the example 1 spun. The results are shown in Table III below.

Table III

Attempt no.

Gamma value of the viscose Extent of solvent removal in %

Number of breaks in 24 hours

Number of thickenings per 10000m

Dry strength in g / d Wet strength in g / d

70
0.62

54
0.04

65 40

3.00 j 0.12
2.58 '2.92

56 36

0.28 i 0.45

l _; 00 j 1.44 2 _; 80 2.62

1.53 ^j 1/95, 1 * 82 ι 1.66

009849/1782

Dry elongation in % 8.3 9.2 t
8.0 7.8 Dilatation in % 8.9 10.1 9.1 8.2 Swelling value in % 97 88 91 96 Wet strength in g / d at 55ί elongation 0 _f 91 1.05 1.02 0 _f 79

It can be seen from the table that in the experiments according to the invention the spinning state and the properties of the yarn obtained are excellent.

Example 4

Viscose with a cellulose content of 4.55 * »a total alkali content of £ 3.42 and a degree of polymerization of 520, which was prepared as in Example 2, was changed in its degree of ripeness (gamma value) and under the same conditions spun as in example 2. The results are in the following Table IV reproduced.

Table IV

Attempt no.
12 3
(Invention) 70 58 85 51 33 Viscose gamma 68 0 _; 07 l; 03 Extent of solvent
distance in % 4.91 0.28 6.49 Number of breaks in 24 hours 5.23 2.90 2 _? 40 Number of thickenings per 10,000 η 2.37 1.93 1 _T 42 Dry strength in g / d 1.38 9.0 7.4 Wet strength m g / d 8.2 9 _r 9 8.5 Dry elongation in % 8.7 95 99 Wet stretch in % 105 1.02 Swelling value in % Wet strength in g / a
at 5 * elongation

QO & 849/1782

BATH

It can be seen from this that when carrying out the Invention the spinning state and the properties of the obtained O ame β are excellent.

Belapiel 5

Viscose with a cellulose content of 5.0, a total alkali content of £ 5.75 and a degree of polymerization of 520, which was prepared as in Example 1, was heated to 45 ° C. (invention) or 55 ° C. (invention) immediately before being spun by means of a horizontal Topham spinning machine and not heated, after which spinning was carried out at speeds of 125, 150 and 170 m / min, respectively. The properties of the oars obtained are as follows Table V reproduced. In this case, with the exception of the sulfuric acid concentration of the spinning bath, the spinning conditions were identical to those of Example 1. The sulfuric acid concentrates were those given in Table V in each case.

Table Y Spinning thread winding m / min

125 45 55 5.4 1 50 5.5 5.5 170 45 35 - Heating temperature
temperature C 5.1 5.2 35 I!
45 55 j -
1 50 54 5.4 5.5 Concentration of
Sulfuric acid in
% 52 51 1.87 5.2 0.09 ^f 2, o5 54 52 54 Solvent-
distance in % 0.04 0.08 52 0.07 0.15 very Number of fractions
in 24 hours 0.05 ■ enxe ~
right
Result
nits

009849/1782

BAO OH ¹ oil

- 2ο -

Number of thickenings
10000 m each 0.11 o, 3O 3.13 0.22 0.74 8.23 0.27 0.90 I.
I. _ Dry strength
in g / d 2.95 2.91 2.35 2.91 2.87 2.25 2.87 2.82 [
; mm Wet strength
in g / d 1.96 1.95 1.42 1.90 1.87 1.35 1.81 1.76 wt Trook expansion
in % 9.3 9.2 7.8 9.1 8.9 7.6 3.6 8 , 3 mm Elongation
in % 10.4 10.3 8.7 9.9 9.6 8.5 9.1 8.7 Source value
in % _ 85 88 121 91 95 127
! 101 103 Wet strength in
g / d at 5Ji elongation 1.01 1.00 0.72 1.00 0.98 [
0.73 0.98 0.96

It can be seen from the table that satisfactory fiber assemblies can be obtained even at speeds as high as 170 m / min if the viscose is heated immediately prior to spinning.

Example 6

Viscose old a cellulose content of $ 4.5 £, a Total alkali content of 3.42Ji and a degree of polymerisation of 520, which was prepared as in Example 2, became immediately before the «spinning medium» of a horizontal Topham spinning machine to 50 ° C or 35 ° C it is heated and not heated, after which the

Spinning at those listed in Table VI below

en Spinning speed 'was carried out. The properties of the yarns obtained are shown in Table VZ. In this pail there were exceptions to the concentration of sulfuric acid of the spinning bath, the spinning conditions are identical to those of Example 2. The sulfuric acid concentrations were each the given in Table VI.

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BATH ORIGINAL

Table VI 35 - 150 50 35 - 170 35 - 2.21
» 5.4 5.6 5.4 5.5 5.7 50
i 5.7 6.0 1.20 Spinning speed
speed m / min 55 36 58 56 \ 35 5.6 56 , 35 7.3 Heating temperature
temperature C 125
_____ 0.12 2.71 0.06 o, i4J 3.01 59 0.20 5.14 8.2 Concentration of
Sulfuric acid in % 50 0.40 4.06 0.27 o, 6i! 7.33 0.07 0.8919.65 130 Solvent removal
distance in % 5.3 2.90 2.30 2.90 i
2.8β 2.24
* 0.29 2.82 0.58 Number of Fractions In
24 hours 58 1.90 1.28 1.87i 1.821 1.26 2.89 1.71 Number of thickenings
per 10000 m 0.06 9.0 7.6 9.0! 8.8; 7.5- 1.89 8.4 Dry strength
in g / d 1
0.20 9.8 8.8 rj
: 9.7 J9.3 8.8 8.7 9.2 Wet strength
in g / d 2.91 91 128 92 j 93 130 9.7 94 Dry stretch
in % 1.94 1.00 ■
0.60 i 1.03U, Oi; 0.59 92 1.00 Wet stretch
in % 9.1 1.03 Swelling value in % 10.0 Wet strength in
κ / d at 5% elongation 90 1.01

It can be seen from the table that the fiber properties are satisfactory even at such high spinning speeds how 175 m / min can be obtained when the viscose is heated immediately before spinning.

009849/1782

BATH ORIGINAL

Claims (3)

Claims 1. A process for spinning high-speed visoosereyon filaments having a high wet modulus thereby characterized in that a viscose is used, the one Degree of polymerization between 400 and 700 and at the time of spinning has a gamma value of 65 to 80 and at which the k Relationship between the degree of polymerisation and the cellulose content and the total alkaline content of the viscose contains the following two Equations met 1) 9.5. ίο ² - SF Ccc.io ² <(i, 3. ίο ⁵ - 1.3 dp 2) 200 + DP <$ · "^ ₅ O + DF, where mean: DP the average degree of polymerization of the viscose, CC the cellulose content of viscose in percent and the TA Gesaatalkaligehalt of Viscose percentage that this Viscose heated immediately before spinning to a \ temperature in the range of 35 to 60 ° C and then is spun in a spinning bath containing sulfuric acid in low concentration and sulfates in low concentration, to the extent of solvent removal from the piles on the the first galette to £ 40 to £ 60 and then the Filaments are drawn, the spinning at a spinning speed of at least 80 m / min using a Horizontal spinning machine is carried out. Ö01849 / 1742 2. The method according to claim 1, characterized in that a spinning bath is used «which contains 4 to 6% sulfuric acid, 0.001 to 0.1 * zinc sulfate, 3 to 6% sodium sulfate and the remainder water, and the temperature of the bath to 30 to 60 ° C is maintained. 3. The method according to claims 1 or 2, characterized in that that spinning has a stretch ratio of 1.2 to 1.8 is carried out. BATH ORIGINAL 009849/1782