JPH083869A - Processing of yarn composed of cellulosic fiber - Google Patents

Abstract

PURPOSE:To provide a process for the treatment of a yarn composed of cellulosic fiber and capable of dissolving and removing exclusively the fluffs in high workability simply by immersing the yarn in a liquid without necessitating time-consuming enzymatic treatment requiring delicate temperature control and the troublesome operations such as rubbing. CONSTITUTION:A yarn composed of cellulosic fibers is immersed in the form of yarn before weaving to a fabric in a dissolution liquid capable of dissolving the cellulosic fiber (e.g. ferric sodium tartrate solution) for a prescribed period, thereby removing the fluffs and reducing the volume of the yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to cellulosic fibers (herein, cellulosic fibers are cotton, hemp, rayon (including polynosic), cupra, and purified cellulosic fibers). ).

[0002]

2. Description of the Related Art Since the surface of a cellulosic fiber product becomes fuzzy when the cellulosic fiber clothing is washed, the cellulosic fiber product is treated with oxygen (bio-treatment) after being made into a cloth. It is removed so that it does not fluff even after washing after treatment.

However, this oxygen treatment is very troublesome because it requires a long treatment time and requires delicate temperature control during the treatment.

In view of the above situation, the present invention finds a dissolving solution capable of chemically dissolving cellulose regardless of biotechnology, and treats it in a short time by immersing it in this solution instead of the enzyme. Moreover, a yarn made of excellent cellulosic fibers that can be easily treated at the yarn stage without considering the deterioration of the commercial value due to the product becoming hard and the product value falling. The present invention provides a processing method of.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

[0006] The cellulosic fiber yarn is immersed in a dissolving solution capable of dissolving the cellulosic fiber for a predetermined time at a stage of the yarn, not after being commercialized, to dissolve and remove the fluff of the yarn to remove the volume of the yarn. The present invention relates to a method for treating and processing a yarn made of a cellulosic fiber, which is characterized in that

Further, the present invention relates to the method of processing a yarn made of a cellulosic fiber according to claim 1, characterized in that a sodium iron III tartrate solution is used as the dissolving solution.

[0008]

The cellulosic fiber yarn is immersed in a dissolving solution having a capability of dissolving the cellulosic fiber, for example, a sodium iron tartrate III solution for a predetermined time at a yarn stage, not after commercialization, to form a yarn. Removes fluff and reduces yarn volume.

[0009]

EXAMPLE In this example, a sodium ferric tartrate solution is used as a dissolving solution having the ability to dissolve cellulosic fibers. Hereinafter, the iron III tartrate sodium solution will be described.

[0010] 1. Iron III tartrate sodium (hereinafter EWN
Method for Preparing Solutions) According to the iron ion concentration, two solutions A and B were prepared according to the following method.

1-1. Preparation procedure (1) Add sodium tartrate to water and dissolve by boiling. Once dissolved, cool to about 20 ° C.

(2) Dissolve sodium hydroxide in water. Since heat is generated during melting, this is also cooled to about 20 ° C.

(3) The ferric chloride solution is diluted with water.

(4) The sodium tartrate solution of (1) is placed in a reaction vessel. As a reaction container, a container of a predetermined size is put in a container that is one size larger, and the outer container is filled with ice water for cooling. A lid with a hole through which the shaft of the stirrer passes and a hole through which a funnel for dropping chemicals passes is used to prevent light from entering the reaction vessel.

(5) While vigorously stirring in the container of (4), (3)
The ferric chloride solution is gradually added to react.

(6) The aqueous sodium hydroxide solution of (2) is gradually added to (5) to react.

(7) A predetermined amount of sodium tartrate is added to (6) as a stabilizer, and diluted with water to a required concentration.

1-2. Amount of chemicals used (the amount of chemicals required to prepare 1 liter each) Iron ion concentration 0.18 mol / l sodium tartrate dihydrate 104 g / 200 ml water sodium hydroxide 64 g / 100 ml water ferric chloride solution (ferric chloride for industrial use) 47 ml / 160 ml water stabilizer (sodium tartrate・ Dihydrate) 5 g B.I. Iron ion concentration 0.12 mol / l Sodium tartrate dihydrate 69 g / 140 ml Water sodium hydroxide 64 g / 100 ml water Ferric chloride solution (industrial ferric chloride) 31 ml / 100 ml Water Stabilizer (sodium tartrate・ Dihydrate) 5 g 2. All steps 2-1. (Example 1) Processing with a thread-like thread (1) The thread-like thread was dipped in the prepared EWNN solution, turned back by hand for 5 minutes, and dipped when the solution was sufficiently penetrated.
Leave for 0 minutes.

(2) After the immersion, the liquid is drained to remove an excess solution, and washed with water until EWNN is decomposed and a red color of ferric hydroxide appears. If the effluent from the wash is no longer colored,
Decolorize by removing ferric hydroxide with 1% dilute sulfuric acid.

(3) When the red color disappears due to the removal of the ferric hydroxide, the sample is washed with water until the pH test paper becomes neutral.

(4) After washing with water, the product is dried to obtain a product.

2-2. (Example 2) Processing with cheese-like yarn (1) The yarn wound up in a cheese-like state is set in a cheese dyeing machine. A prescribed amount of the prepared EWNN solution is filled in a dyeing machine. Two
The liquid is circulated while cooling to about 0 ° C.

(2) After circulating the solution for 30 minutes and treating it,
Rinse for 10 minutes while allowing the water to overflow until the EWNN decomposes and the red color of ferric hydroxide appears.

(3) If the effluent of the washing is no longer colored,
Fill with 0.1% dilute sulfuric acid and circulate for 30 minutes to remove ferric hydroxide and decolorize.

(4) When the ferric hydroxide is removed and the red color of the yarn disappears, the pH test paper is washed with water until neutral.

(5) When the washing is completed, the product is dried to obtain a product.

3. Advantages and advantages, methods, etc. when used in combination with enzyme treatment ○ Advantages ・ Enzyme treatment time that requires delicate temperature control can be shortened (60 minutes or more → about 30 minutes in the past).

Large fluff cannot be removed by enzymatic treatment and only the strength is reduced, but it can be removed by using an EWNN solution. In addition, the treatment with the EWNN solution alone dissolves the small fuzz, thereby reducing the dissolving ability of the EWNN solution. However, by removing the small fuzz with the enzyme treatment, the effect of the processing with the EWNN solution is improved. Can be done.

Method: The enzyme treatment is carried out with a skein-like yarn by using a jet dyeing machine.

(1) The processing liquid has an enzyme (cellulase) concentration of 5 g /
l, Adjust to pH 5 using acetic acid-sodium acetate buffer.

(2) The treatment temperature is 50 ° C. to 60 ° C. for 30 minutes.

(3) After the treatment, heat to 80 ° C. and hold for 10 minutes to inactivate the enzyme.

(4) After completion of the deactivation treatment, the waste water is washed until it does not become cloudy. After washing with water, it is dried.

After the above enzyme treatment, treat with the EWNN solution as described above.

4. Substitutes other than EWNN solution The following 10 points are considered to be expected to have the same effects as the EWNN solution.

[0036]

[Table 1]

The above compounds are known as "cellulose solvents" which have the ability to dissolve cellulose in the same manner as the EWNN solution. The EWNN solution has a central metal of 3
Although it is a valent iron ion, a major difference is that the above-mentioned ten central metals 1a to 5b are divalent.

The above 10 points contain ammonia or ethylenediamine as a component, and the liquid contains a large amount of free ammonia or ethylenediamine. Therefore, the solution has a strong ammonia odor or amine odor,
Considering the impact on the surrounding environment including the working environment, it is necessary to completely seal it.

In the above, the central metal is a so-called "heavy metal", and the discharge of the waste liquid is a source of contamination of the surrounding environment. Therefore, the waste liquid must be completely recovered and subjected to some treatment.

Regarding the stability, all of them are very sensitive to the environment such as oxygen and temperature in the air, so they are more unstable than EWNN which can work under open conditions, and are limited when used for industrial purposes. Is big.

1a is used for producing cupra (copper ammonia rayon).

As described above, in the present embodiment, the sodium iron tartrate III solution is used as the optimum.

[0043]

EFFECTS OF THE INVENTION According to the present invention, fluff can be obtained by simply immersing the liquid in the conventional method, which requires a long time, requires delicate temperature control during that time, and does not need an enzyme treatment such as a troublesome operation such as an indispensable operation. It is a method of processing and processing a yarn composed of a cellulosic fiber, which has excellent workability capable of dissolving and removing

Moreover, large fluff that cannot be removed by the enzyme treatment can be removed, and the removal ability is excellent, and since the present invention treats at the yarn stage, it loses its shape after the product is commercialized as compared with the case where it is carried out after the commercialization. There is no concern about wrinkles or shrinkage, and in this sense the handling of the yarn stage is easy, so it is a processing method for yarn made of cellulosic fibers with excellent workability.

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[Procedure amendment]

[Submission date] May 24, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Delete

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

[0006]

[Means for Solving the Problems] The fluff of the yarn is soaked in a dissolving solution having the ability to dissolve the cellulosic fiber for a predetermined time at the stage of the yarn, not after commercialization, of the yarn of the cellulosic fiber. The present invention relates to a method for treating and processing a yarn made of a cellulosic fiber, which is characterized in that the volume of the yarn is reduced by dissolution.

Claims (2)

[Claims] 1. A fluff of a yarn is dissolved and removed by immersing the yarn of the cellulosic fiber in a dissolving solution having an ability to dissolve the cellulosic fiber for a predetermined time at a stage of the yarn, not after the product is commercialized. A method for treating and processing a yarn made of a cellulosic fiber, characterized in that the volume of the yarn is reduced. 2. The method of processing a yarn made of a cellulosic fiber according to claim 1, wherein a sodium iron tartrate III solution is used as the dissolution solution.