JPH0693562A - Polyester/wool blended fabric and its production - Google Patents

Abstract

PURPOSE:To produce polyester/wool blended fabric exhibiting flexibility and repulsive resilience and excellent in high physical properties by applying a weight reduction treatment to polyester/wool blended fabric containing a specified amount of wool using an aqueous solution containing a specified concentration of a carbonate while crumpling it in a jet machine and reducing the wool content to a value within a specified range. CONSTITUTION:Polyester/wool blended fabric containing 5 to 50wt.% wool is subjected to a weight reduction treatment using 0.1 to 5wt.% aqueous sodium carbonate solution at 90 to 110 deg.C while being crumpled in a jet machine so as to reduce the wool content by a weight reduction ratio within a range of 2 to 80wt.%. The fabric is then treated in an acid bath of acetic acid (or formic acid) at pH2 to 5, thus readily and efficiently producing the objective polyester/ wool blended fabric containing wool having scales on which longitudinal grooves of <=5mum groove width are made in the longitudinal direction of the fiber. This fabric is flexible and excellent in repulsive resilience and exhibits high functional characteristics and high physical properties.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester / wool mixed fabric and a process for producing the same. More particularly, it relates to a polyester / wool blended fabric having a soft texture and a manufacturing process thereof.

[0002]

2. Description of the Related Art Demand for polyester / wool blended fabric has rapidly increased in recent years because it has both the high physical properties and high functionality of polyester, the warmth of wool, and the soft touch. In particular, polyester / wool blended fabrics, which have a high polyester blending ratio, are widely used because of their washability and high physical properties.

However, in this case, the high crystallinity, the high Young's modulus and the rigidity of the solid solution of polyester, on the other hand, have a problem that the texture is hard and the texture is rugged.

For this improvement, a method of using polyester fibers having a fineness can be considered, but the fineness fibers have a drawback that the surface reflection becomes large and the color becomes pale, which cannot be solved.

Further, there is known a method in which the polyester is hydrolyzed on the surface of the polyester under a strong alkaline treatment condition of a hot water caustic soda solution, that is, the texture is softened by so-called alkali reduction processing. However, under these treatment conditions it is too strong for wool,
It cannot be applied due to problems such as complete dissolution of wool, large damage, and large variation.

On the other hand, as for softening wool, so-called chlorination treatment is known, in which a small amount of wool scale (scale) is dissolved with a chlorinating agent. The treated wool has a thin scale layer, which results in a low coefficient of friction and a soft texture. On the other hand, however, since the entanglement disappears, the original shrinking effect of wool is not exerted, the swelling feeling is lacked, and the repulsive and elastic texture cannot be obtained. In addition, there are problems in the process due to restrictions such as chlorine odor, toxicity, dechlorination treatment work, and long treatment time.

It has also been proposed to apply an alkali treatment on the premise of such chlorine treatment to improve the texture. For example, JP-A-57-167452 and JP-A-61-47872 are available. However, even in these techniques, there is the problem of chlorine treatment described above, and it has not been possible to completely solve the problem.

As a method for treating the wool with an alkali, a method of dissolving the wool in a caustic soda solution mixed with acrylonitrile to obtain a hydrophilized wool (Japanese Patent Laid-Open No. 63-135565) or an aqueous solution of caustic soda is used. A method for improving the dyeability by treatment (JP-A-61-119)
No. 784), both of which are fundamentally different from the present invention in purposes and effects, and thus in technical ideas.

The following three points can be summarized as a summary of the problems with the method of softening the polyester / wool mixed fabric in the prior art. ◎ Use of polyester fineness yarn makes the color of the fabric lighter. ◎ The strong alkaline treatment that is usually applied to polyester cannot be applied because it causes great damage to wool. ◎ Chlorine treatment of wool lacks repulsive texture and has a problem in workability. ◎ These problems could not be completely solved by conventional techniques.

[0010]

An object of the present invention is to impart a soft and repulsive texture to a polyester / wool mixed fabric containing polyester at a high mixing ratio, and to prevent appearance change due to washing shrinkage or washing, It is an object of the present invention to provide a polyester / wool mixed fabric which is excellent in washability and has high physical properties and high functionality that are excellent in stretchability and tear strength. Another object of the present invention is to provide a method for producing such a cloth, which is easy to process, has good workability, and is efficient.

[0011]

The polyester of the present invention /
In order to solve the above problems, the wool mixed fabric has the following configuration. That is, in the polyester / wool mixed fabric, the wool has a scaly piece having a longitudinal groove with a groove width of at least 5 μm in the fiber length direction, and the wool mixing ratio is 1 to 49% by weight. It is a wool mixed fabric.

Further, in order to solve the above problems, the method for producing a polyester / wool mixed fabric of the present invention has the following constitution. That is, a polyester / wool mixed fabric having a wool mixing ratio of 5 to 50% by weight is rubbed in a 0.1 to 5.0% by weight sodium carbonate aqueous solution at 90 to 110 ° C. by a liquid flow device to reduce the weight of the wool to 2 to 80%. A method for producing a polyester / wool mixed fabric, which comprises performing weight reduction treatment in the range of weight% and then acid treatment in an acidic bath having a pH of 2 to 5.

The present invention will be described in detail below. ◎ The polyester used in the present invention means a polyester fiber, and for example, polyethylene terephthalate, polybutylene terephthalate, etc. are preferable. Polyester fibers obtained by copolymerizing polyethylene terephthalate with alkylene glycol, dicarboxylic acid, sodium sulfoisophthalic acid and the like can also be preferably applied. As the fiber form, not only short fibers but also long fibers are preferably applied.

The wool used in the present invention is animal hair fiber, and for example, wool, angora, cashmere, alpaca and the like can be preferably applied. ◎ Examples of the form of the polyester / wool mixed fabric include woven fabric, knitted fabric, and non-woven fabric, and the case of woven fabric is preferable because the feature of texture improvement effect can be exhibited.

Examples of means for mixing polyester and wool include mixed spinning, mixed weaving, mixed knitting, and combusting (including fine spinning combusting). The polyester / wool mixed fabric of the present invention has a wool mixing ratio of 1 to 49% by weight. Wool mix is 1
If the amount is less than weight%, the texture effect is small. On the other hand, when the mixing ratio of wool exceeds 49% by weight, there is a problem that washability, strength and other functional properties are deteriorated.

Wool used in the polyester / wool mixed fabric of the present invention, scales remain on the surface, and the scales have vertical grooves with a groove width of 5 μm or less in the fiber axis direction. If there are no scales left on the surface, it is not possible to exert the shrinking effect, and the texture cannot be repelled. Further, when the groove width of the vertical groove exceeds 5 μm, the fineness is not sufficient and it is difficult to obtain a soft texture. The groove width of the vertical groove is preferably 0.5 to 3 μm from the viewpoint of providing a softer and more repulsive texture. Generally, it is difficult to leave scales on the surface with the groove width of the vertical groove being 0.3 μm.

In the method for producing a polyester / wool mixed cloth of the present invention for obtaining such a polyester / wool mixed cloth, first, as a raw material cloth, a wool mixing ratio is 5 to 5%.
A 50% by weight polyester / wool blended fabric is used. When the mixing ratio of wool is less than 5% by weight, the texture effect is small. On the other hand, the mixing ratio of wool is 5
If it exceeds 0% by weight, there is a problem that the washability and the functionality such as strength are deteriorated. Wool mix is 20-4
The content of 0% by weight is preferable because the characteristics can be particularly exhibited.

In the method for producing a polyester / wool mixed fabric of the present invention, the polyester / wool mixed fabric having the above-mentioned wool mixing ratio is heated in a 0.1 to 5.0% by weight sodium carbonate aqueous solution at 90 to 110 ° C. by a liquid flow apparatus. While rubbing, the weight of wool is reduced in the range of 2 to 80% by weight. If a stronger alkaline solution such as an aqueous solution of sodium hydroxide is used instead of an aqueous solution of sodium carbonate as the weight reduction treatment solution, the wool will be completely dissolved or the wool will be greatly damaged as in the conventional technique described above. There are problems such as large variations. On the other hand, if a weaker alkali such as sodium phosphate or sodium acetate aqueous solution is used, the processing speed is too slow, and the texture improving effect is small.

The concentration of the sodium carbonate aqueous solution is 0.
It is 1 to 5.0% by weight. If the concentration is less than 0.1% by weight, the weight loss efficiency of wool is not good. On the other hand, a high-concentration treatment exceeding 5.0% by weight causes a problem of damaging the wool and lowering the strength. The treatment concentration can be appropriately selected depending on how much the wool is reduced, but in the case of reducing the wool by 20 to 40% by weight, a 0.7 to 4.0% by weight solution is preferably applied. ◎ As a guide for determining the treatment concentration, the relationship between the treatment concentration of sodium carbonate and the weight loss rate of wool is shown in FIG. There is almost a linear correlation.

In the method for producing a polyester / wool mixed fabric of the present invention, the temperature of the aqueous sodium carbonate solution is set to 90.
The temperature is set to ˜110 ° C. If the temperature is less than 90 ° C, there is a problem that the weight loss efficiency of wool becomes low. On the other hand, 11
If the temperature exceeds 0 ° C, the processing speed will be too fast,
Also, there is a problem that the texture tends to become hard in a high temperature region peculiar to wool. Weight loss efficiency, processing stability,
From the viewpoint of texture, the treatment at 95 to 105 ° C. is particularly preferable. As a guide for determining the treatment temperature, the relationship between the treatment temperature and the wool weight loss rate is shown in FIG. As the treatment temperature increases, the weight loss rate tends to increase in a quadratic curve.

Further, in the method for producing the polyester / wool mixed fabric of the present invention, the weight reduction treatment with the aqueous sodium carbonate solution is carried out while kneading with a liquid flow device. Without such means, there is a problem that the massaging effect is small and the weight reduction processing efficiency is low. On the other hand, according to the method of the present invention, which is performed while rubbing with a liquid flow device, compared with a conventional wins, jigger, beam dyeing machine, spreader scouring machine, etc., the rubbing action is so large that the weight reduction processing efficiency is markedly large. Can be improved. As an example of the liquid flow device, "UNIACE" (manufactured by Nissen Co., Ltd.), "Circular" (Hisaka Seisakusho Co., Ltd.)
A jet dyeing machine such as a "Mass Flow" (manufactured by Masuda Manufacturing Co., Ltd.) or a "Loco" dyeing machine (manufactured by Gaston) can be preferably applied. The kneading action can be controlled by controlling the pressure of the liquid jet nozzle, the number of times the nozzle passes, the cloth speed, and the like.

The weight loss rate on the wool side of the polyester wool mixed fabric is 2 to 80% by weight. If it is less than 2% by weight, a soft texture cannot be obtained. On the other hand, when it exceeds 80% by weight, the strength of the wool is lowered and the heat retaining property is lowered, which is not preferable. The weight reduction rate is appropriately selected according to the wool mixing rate of the cloth. Generally, for a cloth having a wool mixing rate of 5 to 20% by weight, the weight reduction rate is 40 to 60% by weight, and the wool mixing rate is 20 to 30%.
It is preferable to set a weight loss of 20 to 40% by weight for a cloth and a wool content of 30 to 50% by weight for a cloth of 10 to 20% by weight.

In addition to the above conditions, the weight reduction rate on the wool side can be appropriately controlled by the treatment time and the treatment bath ratio.
The processing time is 30 to 9 from the viewpoint of processing stability and weight loss efficiency.
The treatment bath ratio is preferably about 10 to 200 times (preferably about 20 to 50 times) the weight of the fabric for about 0 minutes. ◎ The weight loss rate of wool in the present invention means the value obtained from the following equation. ◎ Wool weight loss rate (% by weight) = {(W ₀ −W ₁ ) / W ₀ }
× 100 (however, W ₀ : untreated wool weight (g), W ₁ ; treated wool weight (g)) In this case, the weight of the wool is measured in consideration of the hygroscopicity of the wool. 24 at constant temperature and humidity of 20 ℃ and 60% RH
Measure after leaving for a while.

In the present invention, after the alkali treatment, it is usually washed with hot water and water and then treated with an acidic bath having a pH of 2 to 5. By the acid treatment, the acid component penetrates into the inside of the wool, and in addition to the effect of exhibiting a soft texture, it has the action of shifting the pH to the acidic side and returning the dyeability to the original level. Also, the pH of the acidic bath at that time
Since the treated wool is damaged under strong acidity of less than 2,
It is not preferable, and when the pH exceeds 5, the texture effect becomes poor, which is not preferable. pH of 3-4,
Especially preferred. Although various acidic substances are used for pH control, acetic acid or formic acid can be preferably applied because of pH stability. ◎ Incidentally, this acid treatment may be carried out by using a conventional dyeing device such as Wins, Jigger, or beam, or by using a jet dyeing device.

The polyester / wool fabric of the invention can be subsequently dyed in the usual manner. For example,
For the dyeing, the polyester side may be a disperse dye and the wool side may be a plain dyeing using an acid dye, a milling dye, a metal-containing dye, a chrome dye, a reactive dye or the like, and any method such as printing can be applied to finish. ◎ In the method of the present invention, after dyeing a polyester / wool cloth, the above-mentioned weight reduction treatment with a sodium carbonate aqueous solution is carried out. The dyeing weight loss method is also a method of obtaining a cloth having various colors and having a soft texture. Is preferably performed as. In this case, from the viewpoint of contamination due to the loss of dye on the wool side, it is preferable to limit the application to light to medium colors.

The present invention will be described in more detail below with reference to the drawings. ◎ The wool obtained by the production method of the present invention is shown in electron microscope photographs (magnification 80 times) together with comparative examples, as shown in FIGS. 1 to 4. ◎ FIG. 1 is a photograph of wool treated with the aqueous sodium carbonate solution of the present invention (weight reduction rate: 39% by weight), in which wool flakes are not dissolved and a large number of vertical grooves having a groove width of about 1 to 2 μm are present. ing. The weight reduction process reduces the weight of the inside of the wool fiber,
It is presumed that wrinkles are formed in the surface layer and vertical grooves are developed. On the other hand, FIG. 2 shows an example of wool treated with an aqueous solution of sodium hydroxide (weight reduction rate: 38% by weight). The scale was extremely damaged and no trace of the scale was found. This is the result of destruction from the surface portion due to strong alkali, and it is understood that a sodium hydroxide aqueous solution is not preferable as a treating agent. ◎ FIG. 3 shows an example of chlorine-treated wool (weight reduction rate: 3% by weight). It can be seen that the surface of the scale is dissolved and the frizzy function cannot be obtained. ◎ FIG. 4 shows an example of untreated wool.

[0027]

EXAMPLES The fabrics shown in the examples were evaluated by the following methods. ◎ <Texture of fabric> Using KES-FB2 (manufactured by Kato Tech Co., Ltd.), a texture measuring instrument, the shear of the fabric and the rigidity (G
Value: g · cm ² / cm width) and shear hysteresis (2HG
The value: g · cm / cm width) was measured. The smaller the G value,
It has a soft texture and is preferable. Also, 2
The smaller the HG value is, the more repulsive and bulged the material is, which is preferable.

<Handling effect> The G value (softness), 2
The HG value (resilience, bulge) was expressed as a percentage (%) of the untreated fabric. The higher the value is, the better the texture is, and the more preferable.

<Stretchability> The stretchability of the fabric in the high ass direction was examined, and the one with a large stretch was evaluated as good, and evaluated in four grades of ⊚ extremely good, ◯ good, Δ slightly bad, and × bad.

<Tear strength> The strength (g) of the warp yarn and the weft yarn was measured according to the JIS-L1096 method (Pendulum method). The higher the strength, the more preferable.

<Washability> JIS-L1096
According to the method (washing method), the shrinkage rate (%) of the cloth due to washing (vertical direction, horizontal direction) was measured. The smaller the shrinkage rate or the elongation rate (minus display), the less the dimensional change is, which is preferable. There is no change in the appearance of the fabric due to washing tuck: Grade 5, almost no appearance: 4
Grade, slightly changed: Grade 3, considerably changed: 2
Grade, change was remarkable, and bad: 1 grade was evaluated in 5 grades.

<Filtration index> Alkali treatment was performed, and the shrinkage rate (%) and thickness (mm) in the vertical direction, the horizontal direction and the thickness (mm) of the finished product were measured and multiplied by the respective values. The larger the value, the more effective the shrinking effect is and the more swelled the texture is, which is preferable. The thickness was measured with a dial thickness gauge (manufactured by Ozaki Seisakusho Co., Ltd.).

<Wool Weight Loss Ratio> The wool weight loss ratio was measured according to the above-mentioned mathematical formula. However, the weight measurement before and after the treatment is carried out in a constant temperature and humidity room at room temperature: 20 ° C and humidity: 60%.
It was left for 4 hours and then weighed precisely.

<Workability> The treatment agent has no odor, is easy to handle, and has a short treatment time. It is regarded as good, and is classified into four stages: ◎ extremely good, ○ good, △ somewhat problematic, × problematic and bad. evaluated.

(Example 1) Polyester "Tetoron" staple (manufactured by Toray Industries, Inc., single fiber fineness 2 denier, cut length 64 mm) and wool (merino wool, 64 ^s ) 75.0% by weight polyester / 25 wool It was mixed-spun to 0.0% by weight (40-count twin yarn). ◎ Then, using this blended yarn for warp and weft, 2
/ 2 twill weave (warp yarn density 66 / inch, weft yarn density 57 / inch). ◎ Then, this woven fabric (width: 162 cm, length: 250 m) was scouring set according to a conventional method. Next, this woven fabric was subjected to weight reduction treatment with an aqueous sodium carbonate solution using a jet dyeing device of "Circular" RS type (manufactured by Hisaka Seisakusho Co., Ltd.). In order to change the weight reduction rate on the wool side, the concentration was changed to two levels of 1.0% by weight (condition 1) and 2.1% by weight (condition 2). Processing temperature is 100
℃, treatment time 60 minutes, bath ratio 1:30, cloth speed 12
It was set to 0 m / min.

After the treatment, the liquid was drained and then washed with hot water at 40 ° C. for 10 minutes and then with water. Then, acid treatment was performed. <Acid treatment conditions> Treatment agent, treatment concentration: Acetic acid (90%), 0.5% by weight solution Treatment temperature, treatment time: 50 ° C, 15 minutes Treatment liquid pH: 4.3 Treatment bath ratio, cloth speed: weight loss Similar to the treatment, after the acid treatment, it was washed with water and dried by a conventional method, and the weight loss rate of wool was measured. The weight loss rate of wool is 20.8% by weight (condition 1),
39.2% by weight (condition 2), and thus the mixing ratio of wool is 19.8% by weight (condition 1), 15.2% by weight.
(Condition 2).

Then, again using the above-mentioned liquid flow device, it was dyed in dark blue. As the dye, a disperse dye and a metal-containing dye were mixed, a carrier was used in combination, and dyeing was performed at 110 ° C. for 60 minutes. After dyeing, finish according to the usual method (width: 152 cm,
Vertical density 72 / inch, horizontal density 64 / inch). The evaluation results of the obtained polyester / wool fabric are shown in Tables 1 and 2.

[0038]

[Table 1] ★

[0039]

[Table 2] According to the method of the present invention, both conditions 1 and 2 have a great shrinking effect, a soft texture, a resilience, a firmness, and a swelling, and a wonderful dark blue polyester / wool blend twill fabric is obtained. It was Further, the stretchability and tear strength of the woven fabric showed a high level of physical properties, was rich in washability, and had an extremely high quality of functionality.
The weight reduction treatment had no odor, was easy to handle, had good workability, and could be treated efficiently in a short time. In addition,
The weight reduction treatment was extremely stable without any unevenness in processing or variation in weight reduction. ◎ Polyester obtained in this Example 1 (condition 1, condition 2) /
About Wool Fabric Scanning Electron Microscope S-2100A
(Manufactured by Hitachi, Ltd.) was used to observe the wool in each treated fabric (magnification: 800 times). ⊙ In both the condition 1 and the condition 2 of Example 1, woolen flakes clearly remained. The condition 1 was a flaky flaky piece having a groove width of 1.3 μm, and the condition 2 was 0.8-1. Those having a thickness of 0.1 μm were observed. An electron micrograph of the cloth obtained under the condition 2 is shown in FIG. Although the electron micrograph of the cloth obtained under the condition 1 is omitted,
The form was almost the same as in the case of the condition 2.

(Comparative Example 1) The same procedure as in Example 1 was carried out except that a 0.21% by weight aqueous solution of sodium hydroxide (90%, granular material) was used in place of the aqueous sodium carbonate solution, and dyeing was performed. ,evaluated. The evaluation results of the obtained polyester / wool fabric are also shown in Tables 1 and 2. There was a problem that the effect of shrinking was small, the texture was rough, the softness and rebound were lacking, and the characteristics were small. Further, it was difficult to control the weight reduction rate, and the processing was unstable. ◎ In the wool in the cloth obtained in Comparative Example 1, most of the scale pieces on the surface were broken, and vertical grooves could not be divided.

(Comparative Example 2) A 1.3% by weight aqueous solution of chlorinating agent dichloroisocyanuric acid was used in place of the sodium carbonate aqueous solution, the treatment was carried out at a treatment temperature of 30 ° C. for 360 minutes, and then sodium chlorite was used. Other than dechlorination for 60 minutes,
It was dyed and finished in the same manner as in Example 1 and evaluated. The evaluation results of the obtained polyester / wool fabric are also shown in Tables 1 and 2. There was almost no frizzy effect, and it had an ordinary texture that was slimy. Further, the handling of chlorine and the processing time are long, and workability is extremely problematic. ◎ The wool in the cloth obtained in Comparative Example 2 had thin pieces of scaly pieces, but no vertical grooves were observed in the flesh pieces.

(Comparative Example 3) Untreated wool was subjected to dyeing and finishing according to the examples without being subjected to alkali treatment or chlorine treatment and evaluated. The evaluation results of the obtained polyester / wool fabric are also shown in Tables 1 and 2. It had a conventional texture with no characteristics. ◎ The wool in the fabric obtained in Comparative Example 3 had scaly pieces, but no vertical grooves were observed.

(Example 2) Woolly processed yarn (150 denier, 72) of polyester multifilament as warp yarn
Cyan dyeable polyester staple "Lumilet" (2 denier, 64 mm, manufactured by Toray Industries, Inc.) and (merino wool, 64 ^s ) mixed yarn (5)
Weaving into a mixed woven fabric with a cashmered skin design using a 2nd count twin yarn (width: 178 cm, warp yarn density: 111 yarns /
Inch, weft density 83 threads / inch). The mixing ratio of wool is 19.0
% By weight.

Next, this woven fabric is scoured and set by a conventional method,
A weight reduction process was performed. In the weight reduction treatment, a 2.0% by weight aqueous solution of sodium carbonate was used, red was mixed with a disperse dye, a cationic dye, and a metal-containing dye, and dyeing was performed at 105 ° C.
In the same manner as the above, weight reduction treatment, acid treatment, dyeing and finishing are performed,
evaluated.

As a result, a red mixed weave cashmere-skin woven fabric having a unique and soft and repulsive texture which has never been obtained was obtained (texture effect; softness: 17.8).
%, Resilience: 36.5%). The weight reduction rate on the wool side due to the weight reduction treatment is 36.8% by weight (the weight reduction of the fabric: 7.0% by weight), and the wool mixing rate is 12.0% by weight, which has a large shrinking effect and a bulge, which is preferable. Met. In addition, stretchability, strong surface, washable physical properties,
It was a polyester / wool mixed woven fabric that was excellent in functionality and combined with these.

The groove width of the wool in this woven fabric is 0.7.
It had flake pieces with ˜0.8 μm flutes.

(Example 3) A plain weave yarn (52 count, twin yarn) of polyester multifilament (75 denier, 36 filament) and wool (merino wool, 64 ^s ) was used as warp and weft yarns. Woven into a tropical fabric (width: 160 cm, vertical thread density 86 threads / inch, weft thread density 84 threads / inch). The mixing ratio of wool was 40.0% by weight.

Next, this woven fabric is scoured and set by a conventional method,
A weight reduction process was performed. The weight reduction treatment was performed using a 3.5% by weight aqueous solution of sodium carbonate at a treatment temperature of 95 ° C., and the acid treatment was performed at pH 3.
In the same manner as in Example 1 except that the procedure in Example 9 was performed, weight reduction treatment, acid treatment, dyeing and finishing were performed.

As a result, the product of the present invention is an excellent polyester / wool blended tropical woven fabric which has a very soft and repulsive texture compared with the untreated polyester / wool fabric of Comparative Example 4. there were. The weight reduction rate of wool is 20.3% by weight, the mixing rate of wool is 31.8% by weight, the shrinkage index is 55, and the strength is
It was highly washable and of excellent quality. ◎ When the surface of the wool was observed, phosphorus flakes having flutes with a groove width of about 2.4 μm were clearly confirmed.

(Comparative Example 4) Untreated polyester / wool fabric which was not subjected to weight reduction treatment or acid treatment was used as Comparative Example 4, and dyeing and finishing were carried out and evaluated in the same manner as in Example 3. ◎ It had a crunchy and hard texture, which was a conventional mediocre texture.

[0051]

The cloth of the present invention has the following effects. (1) It has a soft, repulsive and swelling characteristic texture. (2) The swelling effect is greatly exerted, and the bulge and softness are increased. (3) A high-quality fabric that is soft, has a repulsive texture, and looks good. (4) It has high physical properties without deterioration in strength and stretchability. (5) Good durability with no wrinkles or dimensional changes even after repeated washing and wearing. (6) It has excellent washability and can be washed as a whole. ◎ Further, the method for producing a fabric of the present invention has the following effects. (7) The treatment is uniform and the treatment is stable with no lot variation. (8) The treatment agent has no odor and is easy to handle. (9) The processing time is short, and the processing equipment is universal, so the processing is simple. (10) The quality is stable with almost no change in dyeing property or physical property due to treatment. (11) Simple processing and low processing cost. ◎ In summary, the polyester / wool blended fabric of the present invention has a soft and repulsive texture, high functionality and high physical properties, and according to the production method of the present invention, the above polyester / wool blended fabric. Can be manufactured easily and efficiently.

[Brief description of drawings]

FIG. 1 is a scanning electron micrograph showing the surface condition of wool treated with an aqueous sodium carbonate solution of the present invention.

FIG. 2 is a scanning electron micrograph showing the surface condition of wool treated with an aqueous sodium hydroxide solution.

FIG. 3 is a scanning electron micrograph showing the surface state of chlorine-treated wool.

FIG. 4 is a scanning electron micrograph showing the surface condition of untreated wool.

FIG. 5 is a graph showing the relationship between the concentration of the aqueous sodium carbonate solution in the weight loss treatment bath and the weight loss of wool.

FIG. 6 is a graph showing the relationship between the weight reduction processing temperature and the weight reduction of wool.

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[Procedure amendment]

[Submission date] October 25, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a scanning electron micrograph showing the shape (surface state) of wool fibers treated with an aqueous sodium carbonate solution of the present invention.

Fig. 2 Wool fiber treated with aqueous sodium hydroxide solution
3 is a scanning electron micrograph showing the shape (surface state) of FIG.

FIG. 3 is a scanning electron micrograph showing the shape (surface state) of chlorine-treated wool fiber .

FIG. 4 is a scanning electron micrograph showing the shape (surface state) of untreated wool fiber .

FIG. 5 is a graph showing the relationship between the concentration of the aqueous sodium carbonate solution in the weight loss treatment bath and the weight loss of wool.

FIG. 6 is a graph showing the relationship between the weight reduction processing temperature and the weight reduction of wool.

Claims (2)

[Claims] 1. A polyester / wool blended fabric,
A polyester / wool mixed fabric, wherein the wool has phosphorus flakes having longitudinal grooves having a groove width of 5 μm or less in the fiber length direction, and the wool mixing ratio is 1 to 49% by weight. 2. A weight reduction rate of wool while rubbing a polyester / wool mixed fabric having a wool mixing ratio of 5 to 50% by weight in an aqueous solution of sodium carbonate of 0.1 to 5.0% by weight at 90 to 110 ° C. with a liquid flow device. A method for producing a polyester / wool mixed fabric, which comprises performing weight reduction treatment in the range of 2 to 80% by weight, and then acid treatment in an acidic bath having a pH of 2 to 5.