DE514400C - Process for the production of artificial textile products with a matt sheen from acetyl cellulose or other cellulose esters or ethers - Google Patents

Description

The invention relates to a method for producing artificial textile products with matt gloss from acetyl cellulose or other cellulose ethers or esters, in which this gloss is more desirable for certain purposes.

For the production of woolly products Cellulose acetate has already been proposed, the product in strand form of a treatment with warm or boiling water or with solutions of ammonium, potassium or calcium rhodanides etc. subject. The disadvantages of this method include: in that a special Post-treatment of the finished web as well as washing and drying are necessary are that furthermore the web becomes too woolly, and finally that the strand shrink and often confuse.

ao According to the present invention, one is now able to do so directly, that is to say without any Aftertreatment of making artificial textile products with a matt sheen, where you have it in your hand, whatever you want To achieve degree of gloss damping. This is achieved by using the so-called dry or Evaporation process, the spinning process in the presence of water, if necessary in the form of water vapor, and 'the water, optionally the water vapor, independently of the spinning liquid into the spinning box. It has been shown that the shine during the formation of the thread is very sensitive in the presence of water and steam.

The idea on which this invention is based can be implemented in various ways. "

So you can get a sufficient amount in the spinning box by introducing water vapor Maintain water content.

Or the web can not yet be: completely freed from the solvent in let enter a second room in which there is enough water vapor.

The following serve to explain the invention, with a solution from as an example Cellulose acetate in acetone is described.

The solution of cellulose acetate in acetone is in the usual way through fine openings guided in the downward direction into a spinning box, while the web, a wire guide along, passed from the lower part of the spinning box to a winder will. The spinning process takes place in the presence of water, possibly in the form of water vapor.

The spinning process can also be used in this way

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make sure that there is water vapor in the spinning box, the amount of which depends on the temperature, _f

Another method is that No steam is introduced into the spinning box, but the web is already out lets the spinning box step before the solvent is completely removed; then that will Web led into a room in which

ίο there is enough steam. So you can z. B. use a second box or the winder in place in a humid atmosphere or the web on its way from the Spinning box to the winder from the remaining acetone in one Free space in which water vapor is present.

Depending on the path the web passes through in the humid atmosphere, greater or smaller and depending on the degree of humidity and temperature of the air the product produced will become more or less matt.

Proceed to the aluminum execution of the procedure for example:

example 1

A solution containing 15 parts by weight of cellulose acetate, 1 part by weight of water and 84 parts by weight of acetone is used in the usual Way spun at a temperature of 45 °. This solution gives a product with high gloss. After the introduction of steam into the spinning box, the product is matt, while the degree of mattness increases with the increasing amount of steam.

Example 2

A solution containing 26 parts by weight of cellulose acetate, 3 parts by weight of water and 71 parts by weight of acetone is spun at a temperature of 55 °. This solution gives, as is also the case in the first example, a shiny product while after the introduction of more or less steam, a greater or lesser dullness is obtained.

■ B e i s ρ i e 1 3

A solution of 20 parts by weight of cellulose acetate, 2 parts by weight of water, 12 parts by weight of alcohol and 66 parts by weight of acetone is spun at a temperature of 50 °. The originally shiny product becomes matt after the introduction of steam into the spinning box.

From the above it is clear that according to the large number one changes Factors the process of making acetate silk with a matte sheen inside can regulate limits very broadly. That's how you are. able to change the circumstances for to choose each case as cheaply as possible; this is a great advantage of the new method. In addition, there is generally no need to make any changes to the apparatus and in contrast to the known, mentioned in the introduction of this description Procedure does not apply any special post-treatment.

Claims (1)

Claim: Process for the production of artificial textile products with a matt sheen Acetyl cellulose or other cellulose esters or ethers after drying or Evaporation process, characterized in that anhydrous or water-containing spinning solutions are processed and during the spinning process, irrespective of the spinning liquid, water or introduces water vapor into the spinning box.