JPH08188969A - Method for treating cloth of animal hair-based fiber - Google Patents

Abstract

PURPOSE: To provide a method for treating a cloth of animal hair-based fibers capable of incarnating excellent shrink-proof properties, wash and wear properties, crease-proof properties and dimensional stabilities by imparting a specific compound to the fibers after a shrink-proof treating of the fibers and polymerizing the compound by a heat-treatment. CONSTITUTION: This method for treating a cloth of animal hair-based fibers comprises shrink-proof treating the animal fibers such as a wool or the cloth constituted by the animal hair fibers by a chlorinating method, a chlorinating hercosett method, a low temperature plasma method, etc., then imparting a compound having a thermally dissociating-type block isocyanate group at end thereof and an alkyleneoxide group in main chain thereof to the cloth after forming the cloth in the case of animal fibers and as it is in the case of the cloth, and polymerizing the compound by a heat-treatment to fix a polymer on the surface of the fibers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing method for imparting shrinkage resistance, W & W property (wash and wear property), wrinkle resistance and dimensional stability to animal hair fiber cloth.

[0002]

2. Description of the Related Art When an animal hair fiber cloth is washed with water, it is felt and contracted remarkably due to the entanglement of scales constituting the surface of the fiber, so that it cannot withstand washing with a normal washing machine. However, technological developments in this field have recently progressed, and as a shrink-proofing method that can withstand washing with a washing machine, it is currently performed in the top condition, such as the dylan method, the chlorinated hercoset resin method, and the dough state. The Sirolan BAP method, the low temperature plasma treatment method, etc. have been developed, and products that can be actually washed by a washing machine can be obtained.

As described above, although the shrink-proofing treatment has been considerably improved at present, the animal hair fiber products after these treatments can be washed with a washing machine, but have a morphological stability after washing. And W & W property (wash and wear property that can be worn without ironing after washing) is lacking.

Wool-based fiber products have good wrinkle-proof properties when dried, but have poor wrinkle recovery properties when moistened while being worn. It had a defect that the appearance of the product was impaired due to partial waviness or curvature at the store or when worn. Therefore, when a set agent such as monoethanolamine sulfite is used for setting, such a defect is solved and the flatness is improved, but the higher the setting effect is, the higher the hygral expansion and the relaxation shrinkage are, and the dimensional stability is improved. Deteriorate. And even now,
The fact is that animal hair fiber products that satisfy all of shrink resistance, W & W property, wrinkle resistance, and dimensional stability (hygral expansion, relaxation shrinkage, bubbling) have not been obtained.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such a situation as described above, and is excellent in shrinkage resistance, W & W property, wrinkle resistance, and dimensional stability (high-granular expansion) for animal hair fiber products. , Relaxation contraction, and bubbling).

[0006]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, according to the present invention, animal hair-based fibers or animal hair-based fiber cloths are subjected to shrink-proofing treatment by a chlorination method, a chlorinated hercoset method, a low-temperature plasma method, etc., and then, in the case of animal hair-based fibers, After the formation, the animal hair fiber is characterized in that the animal hair fiber cloth is provided with a compound having a thermally dissociative blocked isocyanate group at the end and an alkylene oxide in the main chain, and then heat-treated for polymerization. The gist is the method of processing the fabric. Hereinafter, the present invention will be described in detail.

The animal hair fiber in the present invention means a natural keratinous fiber obtained from animals such as wool, camels, goats and rabbits, and animal hair fiber cloth means the above animal fiber. A woven fabric obtained by using the above-mentioned animal hair fibers and other kinds of fibers alone (mixed spinning, mixed fiber, mixed woven, mixed knit, etc.),
It means a knitted fabric and the like, and examples of the other type fibers include polyester fiber, acrylic fiber, nylon fiber, aramid fiber, polyclar fiber, vinyl chloride fiber and the like.

In the method of the present invention, the animal hair-based fiber or the animal hair-based fiber cloth as described above is first subjected to shrink-proofing. The shrink-proofing process performed here is a chlorination process that treats the top or the fabric, a dylan process that treats the top, a chlorinated hercoset resin process, or a low-temperature plasma treatment that treats the fabric. Although any processing method such as a method may be used, shrink-proof processing by a chlorination method is preferable.

When the shrink-proofing treatment is carried out by the chlorination method,
First, a chlorinating agent such as hypochlorite or dichloroisocyanuric acid is added to an animal hair fiber or an animal hair fiber cloth in an aqueous solution in an amount of 2 to 7% owf, preferably 3 to 5% owf. 6
After the treatment at 0 ° C. for 30 to 60 minutes, it is thoroughly washed.

When the shrink-proofing treatment is carried out by the chlorinated Hercoset method, 1 to 5% owf of polyamide epichlorohydrin polymer (aqueous solution adjusted to pH 7 to 8 with sodium bicarbonate) is applied to the chlorinated cloth. The processing is performed at room temperature for about 10 minutes.

When the shrink-proofing process is carried out by the low temperature plasma method, the animal hair fiber cloth is processed by the low temperature plasma processing device. The low temperature plasma processing device used at this time is a vacuum container which can maintain a low pressure. A device having a structure and performance capable of maintaining a constant pressure by providing a pair of electrodes for discharge, introducing a specific gas at a predetermined flow rate, and exhausting the inside of the container with an attached vacuum pump. If a voltage is applied to the electrodes in this device, glow discharge will occur and the introduced gas will be in a low temperature plasma state. Most commonly 13.56 MHz
The high frequency power of is applied. The low temperature plasma treatment can be performed by passing the cloth to be treated at a desired speed in the low temperature plasma atmosphere formed between the electrodes.

Specifically, the cloth to be treated is housed in a vacuum container, evacuated and decompressed by a vacuum pump to reduce the internal pressure to 0.
Adjust from 01 to 10 Torr. Then, a predetermined gas is introduced to adjust to 0.1 to 5 Torr. As the gas used at this time, various gases such as oxygen, nitrogen, argon, helium, ammonia and air can be used.

When high frequency power is applied to the electrodes, the introduced gas is brought into a low temperature plasma state. The appropriate high frequency power is about 0.1 to 5 W / cm ² (electrode unit area). By passing the cloth through the low temperature plasma atmosphere, low temperature plasma treatment can be performed. The processing time is usually several seconds to 300 seconds, preferably 30 to 180 seconds.
Seconds.

In the case of animal hair fibers, after the shrink-proofing treatment described above, yarns are formed by a usual spinning method, and subsequently, a fabric such as a woven fabric or a knitted fabric is knitted or woven.

Here, the shrink-proofed animal hair fiber cloth is provided with a compound having a thermally dissociable blocked isocyanate group at the terminal and an alkylene oxide group in the main chain. A compound having a thermally dissociated blocked isocyanate group at the terminal and an alkylene oxide group in the main chain used here has a main chain made of polyethylene oxide, polypropylene oxide, etc. Gives permeability to textiles. The water-soluble urethane prepolymer is a substance having a molecular weight of 1,000 to 10,000. In the thermal dissociation type blocked isocyanate group, free isocyanate is blocked by sodium bisulfite, phenol, active methylene compound, lower alcohol, lactam, etc.
By heating to ˜180 ° C., the blocking agent is dissociated, the isocyanate group is regenerated, and the isocyanate group is subsequently reacted to polymerize.

To apply the above resin compound to a cloth,
First, dissolve it in water and, if necessary, a catalyst, softener,
An aqueous solution mixed with a penetrant is prepared, and the cloth is impregnated by a usual method and dried. Practically, it is preferable to control the amount of adhesion with a padder, coater or the like to apply.

After applying the resin compound, in the present invention, heat treatment is carried out at a temperature not lower than the heat dissociation temperature of the heat dissociation type blocked isocyanate group to cause polymerization. The heat treatment temperature in the polymerization reaction is preferably 100 to 180 ° C, more preferably 130 to 150 ° C. When the reaction temperature is 100 ° C. or lower, dissociation of the blocking agent does not occur and the polymerization becomes insufficient, which is not preferable. Further, when the temperature is 180 ° C. or higher, the polymerization is sufficient, but the fabric is yellowed and the whiteness is lowered, which is not preferable. In order to apply the resin compound to the animal hair-based fiber cloth, the processing may be performed by an ordinary continuous method.

[0018]

[Function] As in the present invention, after shrink-proofing of animal hair-based fibers,
When a resin having a thermally dissociated blocked isocyanate group at the end and a resin having an alkylene oxide in the main chain is impregnated and polymerized, the film-formed resin compound exhibits resilience and the scale falls off during shrink-proofing. Due to the cross-linking effect of the exposed animal hair fibers with the reactive groups such as amino groups, the animal hair fiber cloth is provided with excellent performance durability and excellent shrink resistance, W & W property, wrinkle resistance, and dimensional stability. (High-granular expansion, relaxation contraction, bubbling) can be obtained.

[0019]

EXAMPLES The present invention will be described in more detail with reference to the following examples. The performances of the fabrics in the examples were measured and evaluated by the following methods. (1) Shrinkproof property After washing by JIS L-0217 (103 method, home washing method) and tumble drying, the shrinkage rate is JIS L-109.
6 was measured. (2) W & W property Washing was performed 10 times according to JIS L-0217 (103 method, home washing method), after tumble drying, the W & W property was visually judged by AATCC-124. (3) Wrinkle resistance JIS L-1096

(4) Dimensional stability Hygral expansion IWS method Relaxation shrinkage IWS method Bubbling After steam treatment for 15 minutes, the following five grade classifications were made by visual observation. 5th grade: best, 4th grade: good, 3rd grade: normal, 2nd grade: somewhat poor, 1st grade: poor

Example 1 A woven fabric made of 100% wool (tropical using 2/60 warps and wefts) was prepared, and chlorinated as follows. First, the following formulation 1 was used to carry out a wet treatment at a bath temperature of 1:30 at a liquid temperature of 20 ° C. for a treatment time of 10 minutes, and then by the following formulation 2 at a bath ratio of 1:30 and a liquid temperature of 45.
Chlorine treatment at 60 ° C for 60 minutes, followed by dechlorination treatment at a bath ratio of 1:30 with a liquid temperature of 50 ° C and treatment time of 10 minutes according to the following formulation 3, and then at 45 ° C. It was washed with hot water for 10 minutes and with water at 20 ° C. for 10 minutes.

Formula 1 Alcopol 650 0.2% (vs. wool fiber weight) Sodium sulfate 10.0% (〃
) Adjust to pH 4.5 with acetic acid

Formulation 2 Dichloroisocyanuric acid 5.0% (vs. weight of wool fiber) Adjusted to pH 4.5 with acetic acid Formulation 3 Sodium acid sulfite 2 g / liter

This cloth was then dipped in an aqueous solution of the following formulation 4, squeezed with a mangle at a squeezing ratio of 70%, dried at 110 ° C. for 90 seconds, and then heat-treated at 160 ° C. for 2 minutes.

Formulation 4 Elastron BAP 150 g / liter (Daiichi Kogyo Seiyaku Co., Ltd., blocked urethane resin) Sodium bicarbonate 10 g / liter (pH adjuster) PORON MF14E 70 g / liter (Shin-Etsu Chemical Co., Ltd. amino silicone softener)

Then, the fabric was washed with water, washed with hot water by a usual method, dehydrated and then dried to obtain a processed fabric of the present invention.

For comparison with the present invention, a processed fabric for comparison (Comparative Example 1) was obtained in exactly the same manner as in this Example, except that the treatment according to Formulation 4 was omitted in this Example.

The performances of the present invention and the processed fabric for comparison were measured and evaluated, and the results are shown in Table 1.

[0029]

[Table 1]

As is clear from Table 1, the processed fabric of the present invention has excellent performances in all of shrink resistance, W & W property, wrinkle resistance, and dimensional stability (hygral expansion, relaxation shrinkage, bubbling). It was

[0031]

According to the method of the present invention, excellent shrink resistance, W & W property, wrinkle resistance, and dimensional stability (hygral expansion, relaxation shrinkage, bubbling) can be imparted to animal hair fiber cloth.

Claims (1)

[Claims] 1. Animal hair-based fibers or animal hair-based fiber cloths are subjected to shrink-proofing treatment by a chlorination method, a chlorinated hercoset method, a low-temperature plasma method, etc., and then, in the case of animal hair-based fibers, a cloth is formed. After that, the animal hair-based fiber cloth is characterized in that the compound having a heat-dissociated blocked isocyanate group at the end and a compound having an alkylene oxide in the main chain is applied to the animal hair-based fiber cloth as it is and then polymerized by heat treatment. Processing method.