JPS59199869A - Production of fiber product - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a method for producing textile products that have good hand feel, excellent dimensional stability and resistance to damage. More specifically, the present invention relates to a method of imparting flexibility, excellent drapeability, and wash-and-wear properties to a fabric without substantially reducing its tear strength and bending abrasion strength.

BACKGROUND OF THE INVENTION Although natural fibers and regenerated cellulose fibers have excellent hygroscopicity, they have the drawbacks of being easily wrinkled and having poor dimensional stability against water. Many studies have been carried out over the years to improve the above-mentioned drawbacks, as typified by resin processing. However, although these methods can impart water dimensional stability and wrinkle resistance to natural fibers and regenerated cellulose fibers, the tear strength, bending abrasion strength, etc. of the fabric due to the crosslinking reaction are significantly reduced. In addition, the drapability decreases, and the hand becomes rough and hard.

Furthermore, coatings made of natural cellulose fibers, mainly made of polyurethane nidistomers, improve wrinkle resistance and wash-and-wear properties, but tear strength, bending abrasion strength, etc. are significantly reduced, and the texture is also very rough. It becomes hard and the original texture of natural cellulose fibers is lost. In addition, especially for thin fabrics, the polyurethane disstomer penetrates to the back surface, resulting in extremely poor quality.

Therefore, although many techniques for improving the disadvantages of natural fibers and regenerated cellulose fibers are quite effective for the intended purpose of improvement, they result in rough hardening of the hand and a decrease in tear strength and bending abrasion strength. This creates new drawbacks such as the above, and it is impossible to skimp on what is practically satisfactory.

Summary of the Invention The present inventors have developed a method for producing natural fibers and regenerated cellulose fibers with a highly flexible texture and excellent dimensional stability, with almost no reduction in tear strength, bending abrasion strength, etc. We conducted a thorough investigation into methods for imparting properties and wash-and-wear properties.
? tL,y,=As a result, the present invention was achieved.

ff1J also provides a natural fiber and/or regenerated cellulose fiber fabric with 15 to 70% of the absolute dry weight of the fabric.
After impregnating the fabric with 1% water, a solution mainly consisting of polyurethane distomer is applied, and then the fabric is placed in a coagulation bath. Characterized by coagulating and rubbing urethane elast 7-1, it has good texture, dimensional stability, wrinkle resistance,
It is a manufacturing method for textile products with excellent wash and wear properties.

According to the present invention, natural fibers and regenerated cellulose fiber fabrics have high flexibility, excellent drapeability, and washability and wearability, with almost no reduction in tear strength, bending abrasion strength, etc. , wrinkle resistance and dimensional stability can be imparted. In other words, by adding moisture, the penetration of the polyurethane elastomer is controlled, and by rubbing it, the tear strength and flexural abrasion strength, which were once lowered by adding the polyurethane elastomer, are almost completely restored to the polyurethane elastomer. It allows you to recover to your previous level.

Conventionally, it has been known that water content prevents the penetration of elastomers, etc., but the Uemachi effect can be obtained by using this in natural fibers and regenerated cellulose fibers and combining it with force/rubbing fabric. Nothing was known about it. In other words, even with conventional resin processing and rubbing, it is difficult to restore tear strength, bending abrasion strength, etc., and wrinkles are fixed, resulting in a significant decrease in product value.
The land for fruiting is not used at all.

The present invention will be explained in more detail below.

The natural fiber used in the present invention, regenerated cellulose fiber, is
There are cotton, linen, silk, wool, viscose rayon (including polynosic), copper ammo, -y process v-yon, and mixtures thereof. Further, the fiber fabric may be any fabric such as woven fabric, knitted fabric, or non-woven fabric. Also, substantially natural fibers,
As long as the characteristics of the regenerated cellulose fibers are not impaired, there is no problem even if the fibers are blended, blended, or cross-woven with other types of fibers. The permissible mixing limit for other types of fibers used in combination with natural fibers and regenerated cellulose fibers is generally 50% by weight or less, based on the total weight of both fibers.

In the present invention, the moisture content of the fabric is based on the absolute dry weight of the fabric.
It is 15 to 70 weight ratio, preferably 7 to 20 to 50 weight ratio. When the moisture content of the fabric is 15% by weight or less, the solution mainly composed of polyurethane elastomer penetrates the back side of the fabric, and after solidification, a film is also formed on the back side of the fabric, resulting in a rough texture and a significant decrease in commercial value. descend. For 70 years old and above, polyurethane elastomer is M in the fabric surface layer.
7T, the coating becomes thicker, impairs the original feel of natural fibers and regenerated cellulose fibers, significantly reduces drapability, and makes the polyurethane elastomer coating easy to peel off.

Next, moisture can be added to the fabric by placing the fabric in an atmosphere that maintains a certain amount of moisture in the fabric, by spraying water on the fabric, by coating the fabric with water, or by immersing the fabric in a water-containing bath. Either Method 1 or a method of removing part of the moisture from the fabric after carrying out the above method, or keeping the moisture in the fabric constant, etc., may be used.

The polyurethane distomer used in the present invention may be either a polyester type or a polyether type.

The polyurethane distomer solution used in the present invention is
A polyurethane elastomer is used by dissolving it in a polar organic solvent such as N,N-dimethylformamide or dimethyl sulfoxide. Moreover, the concentration of the polyurethane elastomer in the solution is 5.
~50 weight ratio, preferably 10~30 weight ratio. If the amount is less than 51% by weight, sufficient wash-and-wear properties and wrinkle resistance cannot be obtained. Also, if it is 50 heavy evil 2% or more,
The texture becomes rough and hard, and the drape properties and tear strength (S, M) (curve strength, etc.) are significantly reduced.

The method for applying the subliquid mainly composed of polyurethane elastomer may be any of the following methods: bringing the fabric into contact with a belt-like material (!:) containing the above solution, coating the fabric with Joki mercury, spraying, or dipping.

Next, a solution mainly containing polyurethane entomer is applied to the fabric, and then coagulated in a coagulation bath in an underwater tube. The temperature and time of the coagulation bath may be such that the polyurethane disstomer coagulates. Drying is preferably at a moderate temperature, 60~]
Approximately 0.5 to 5 minutes at 00'C is sufficient.

In the present invention, kneading (!:) means to give a coating effect by thoroughly kneading the coating formed on the surface of the fabric by the # to be rubbed. In addition, once the polyurethane elastomer is added, the tear strength and bending abrasion strength are almost at the level before the addition of the TP polyurethane elastomer.

The rubbing in the present invention may be carried out in a wet state or in a dry state, but preferably in a wet state or in a cloth. In the wet state, softeners, water repellents,
It may be carried out in a bath containing a leveling agent, a penetrating agent, etc., or in a dyeing bath. The rubbing device may be any device that can rub the fabric, such as a jet dyeing machine, a wince, a washer, etc. Also, the bath ratio during the rubbing treatment is preferably l: 5 to 100. If the ratio is less than 1:5, the fabric may be seriously damaged, and if it is more than 1:100, a sufficient rubbing effect may not be obtained.Preferably, the rubbing temperature and time are 1:1.
5 to 100℃ for 15 to 90 minutes, and the cloth speed during kneading is 20 to 120 m/min.
If the cloth speed is less than 20 m/min, a sufficient rubbing effect of the cloth cannot be obtained, and if the cloth speed is more than 120 m/min, the cloth will be seriously damaged and cannot be easily rubbed.

When the cloth is rubbed in a dry state, it may be rubbed using a felt, vapor, etc. calender, an embossing roller, a rubber roller, or the like. The pressure of each roller during kneading is 2 to 10 ky.
It is light and heavy that the cloth speed is 5 to 30 m/min at 10 n2.

It is free to carry out the usual post-processing (dying, resin processing, flexibility U-processing) on the fiber fabric obtained by the present invention, and the effects of the present invention will not be impaired by these post-processing. do not have.

Example The present invention will be further explained below with reference to Examples.

[Example 1] Red plain fabric (C, 1, Reactive Red 11
(13% owf dyed product) was sprayed with water to make the moisture content of the fabric 25% by weight.

The fabric was coated with the following treatment solution and then immersed in water at 20° C. for 15 minutes to coagulate the polyurethane disstomer using a wet method.

<Treatment liquid> Crisbon 6868 (Nippon Ink, thermoplastic urethane) 50 parts 1N,N-dimethylformamide 50N Vortex, and then dry the fabric in a hot air dryer at 60°C for 5 minutes. (Part 2) and subsequently, the cloth speed is 6 on the liquid dyeing stand machine.
Rubbed at 0 m/min, dehydrated and dried to give 1 piece (Nαl)
) was used as a sample.

<Kneading treatment> Nftenox A-1017 (manufactured by Kako Atlas Co., Ltd., bath softener) 1% owf, bath ratio 1:10, 30 at 50°C
As a comparison of minute-rubbing treatment, the red plain woven fabric was treated with resin under the following conditions.

<Resin processing conditions> Sumitex Resin N5-18. (Manufactured by Sumitomo Chemical...
N, N'-dimethylol dihydroxyethylene urea compound) 170? /l, Sumitex Accelerator X-5O (manufactured by Sumitomo Chemical Co., Ltd.) 519/ and AT-
1500G (manufactured by Nicca Chemical Co., Ltd....softener) 20? /l
The resin solution consisting of the following was soaked, squeezed to a pickup rate of 80% by weight, dried at 100°C for 1 minute, and then
Cuprination was carried out at 150° C. for 3 minutes (Na4).

Furthermore, the fabric was rubbed in a jet dyeing machine under the same conditions as Nnl, and dehydrated and dried (NCL3).

Here, before measuring the condensation property of the fabric, each sample was left in an atmosphere at a temperature of 20° C. and a relative humidity of 65° C. for 48 hours or more to prepare a humidity control sample 1. The bending and bending properties were determined using the JIS-L-1096A method (45'
Cantilever method), wash-and-wear property is determined by the JIS-L-1096A method (wire method, tear strength method) for wrinkle resistance after washing (method using an agitating basket washer), and wrinkle resistance is Abrasion strength is determined by JIS-L-1096D method (Pendjilam method), abrasion strength is determined by JIS-L-1096A method (bending method), shrinkage is determined by JIS-L-0217-103 method, and drapability is determined by JIS-L method. Measured at -1096 drape factor.

Table 1 shows the physical properties of each fabric obtained as described above.

From the results in Table 1, the product (N
It can be seen that [Ll) has extremely excellent wrinkle resistance, dimensional stability, and drapability, and the decrease in tear strength and bending abrasion strength is small.

Blue plain fabric (C, 1, Reactive Blue5 3%
owf dyed material) was immersed in water, squeezed at a BIC amperage rate of 80 weight, and adjusted to the moisture content of each fabric shown in Table 2 using a hot air dryer.

Apply the following treatment liquid to the fabric using a gravure roll 7,
The polyurethane elastomer was then coagulated in water at 20°C for 15 minutes.

Treatment liquid> Crisbon 6868 60% by weight N, N-
Dimethylformamide 40 N amount % The fabric was further dried in a hot air dryer at 60°C for 8 minutes, and then in a Wins dyeing machine at a bath ratio of 1. :20° cloth speed 50m/min, 50°C
The mixture was rubbed for 30 minutes and then dehydrated and dried.

Table 2 shows the physical properties of each fabric obtained as described above.

From the results in Table 2, according to the present invention, the fabric content moisture 15
By applying polyurethane elastomer at ~70% by weight, a product with extremely excellent wrinkle resistance, dimensional stability, and drapability, as well as a small decrease in tear strength and flexural abrasion strength, can be created. I know what I'm getting.

[Example 3] Red plain fabric (C, I) made of #40 single yarn cotton.

Reactive Red 1 ] 1 2% owf dyed material) was immersed in water and squeezed at a big amplifier rate of 75%,
It was dried in a hot air dryer at 60° C. for 30 seconds to adjust the moisture content of the fabric to 3ON.

The fabric was immersed in the following treatment solution, squeezed with a mangle to a Big Amps ratio of 70 by weight, and then the polyurethane distomer was coagulated in water at 20° C. for 15 minutes.

<Treatment liquid> Crisbon 8166 (manufactured by Dainippon Ink Co., Ltd., thermoplastic urethane) & 70 weight ratio N,N-dimethylformamide 30 weight 8% The fabric was further dried in a hot air dryer at 60°C for 5 minutes, and then The fabric was rubbed using a jet dyeing machine under the same conditions as in Example 1, and then dehydrated and dried.

Table 3 shows the properties of each fabric obtained as described above.

From the results in Table 3 in the margin below, the products obtained by the method of the present invention are:
It can be seen that it has extremely excellent warp resistance, dimensional stability, and drape height, and that there is little decrease in strength, tear strength, and abrasion strength.

As is clear from the above examples, the present invention can be applied to natural fibers,
To obtain a leather that is highly flexible and imparts excellent drapability and wash-and-wear properties to a regenerated cellulose fiber fabric without substantially reducing its tear strength and abrasion strength.

Applicant Asahi Kasei Industries, Ltd. patent application agent Patent Attorney Akira Miyagi Patent attorney Kazuyuki Nishidate Patent Attorney Yoshi 1) Keio Patent attorney Akira Yamaguchi

Claims (1)

[Claims] l After impregnating a natural fiber and/or regenerated cellulose fiber fabric with 15 to 70% by weight of water based on the absolute dry M amount of the fabric, applying a solution mainly composed of polyurethane distomer, and then applying the solution to the fabric. A method for manufacturing a textile product, which comprises coagulating a polyurethane disstomer in a coagulation bath and then rubbing it.