JP6969326B2 - Polyester mixed yarn fabric - Google Patents

Description

The present invention relates to a woven fabric containing polyester fiber threads as a main component. More specifically, the present invention comprises a conjugated yarn composed of at least two types of polyester polymers having different heat shrinkage, a polyester multifilament yarn in which isophthalic acid is copolymerized, a polystyrene polymer as a core component, and a polyester polymer as a sheath component. By using a mixed fiber yarn that is a composite of the core-sheath type composite multifilament yarns in which are arranged, the effect of each characteristic is maximized, and the natural appearance with stretchability, softness, swelling feeling and warmth. It is a polyester mixed fiber yarn fabric that exhibits various excellent features such as, and has both high texture and good wearing functionality. By using the polyester mixed yarn fabric having these characteristics, it is possible to provide clothing that can be used for elegant purposes such as dresses, blouses, pants and skirts.

Since the polyester fiber material has excellent handling features such as dimensional stability and wash and wear properties, it is widely used as a material for clothing such as thin to medium-weight fabrics. A method of imparting functionality such as improvement of texture, differentiation of appearance, and improvement of stretchability while utilizing such features has been known so far.

In order to increase the swelling as a texture improvement, a technique for improving the swelling in a woven or knitted fabric by utilizing the difference in heat shrinkage has been proposed (see Patent Documents 1 and 2), but in the case of this proposal, the stretchability Was not able to meet at the same time.

In addition to improving the texture, it has been proposed to impart crimping to the yarn itself and to reduce the amount of alkali in order to develop a natural appearance and a soft touch (see Patent Document 3). However, in the case of this proposal, it is not possible to satisfy the stretchability that is comfortable when worn, and there is a problem that the appearance is deteriorated when the yarn is repeatedly worn due to the decrease in the strength of the yarn.

Further, in order to impart the stretchability required for wearing comfort, a technique of combining a polyester conjugate yarn and a polyester multifilament yarn has been proposed (see Patent Document 4). However, although this proposal is excellent in stretchability, there are problems that the swelling required for elegant clothing applications is scarce, the texture is hard, and the difference in shade is small and the appearance is not natural.

Japanese Patent No. 5151193 Japanese Patent No. 4706103 Japanese Patent No. 3912065 Japanese Patent No. 3988286

Therefore, an object of the present invention is a fabric using at least a part of polyester multifilament mixed fiber, which has not been obtained by the prior art, and has a swelling, warm and natural appearance particularly required for women's clothing. High-quality texture with soft touch and resilience, stretchability that makes it comfortable to wear, and polyester blended yarn fabric that is suitable for clothing applications with excellent practical durability, and women's clothing using the polyester blended yarn fabric. It is to provide clothing.

The present invention is to solve the above-mentioned problems, and the polyester mixed fiber fabric of the present invention is a mixed fiber composed of a polyester filament containing at least the following filaments A, threads B and threads C. It is a polyester mixed fiber yarn cloth which uses yarn at least a part.
-Thread A: A conjugated multifilament composed of at least two types of polyester polymers having different heat shrinkage characteristics.
-Thread B: Polyester multifilament obtained by copolymerizing isophthalic acid.
-Thread C: A core-sheath type composite multifilament in which a polystyrene polymer is arranged in a core component and a polyester polymer is arranged in a sheath component.

That is, in the polyester mixed fiber yarn fabric of the present invention, a conjugated multifilament (hereinafter, may be referred to as yarn A) composed of at least two types of polyester polymers having different heat shrinkage properties and isophthalic acid are copolymerized. Polyester multifilament (hereinafter, may be referred to as thread B) and a core-sheath type composite multifilament (hereinafter, thread) in which a polystyrene polymer is arranged in a core component and a polyester polymer is arranged in a sheath component. C) is a fabric in which at least a part of the mixed yarns are mixed fibers.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the total fineness of the mixed yarn composed of the above-mentioned threads A, threads B and threads C is 100 decitex or more.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the yarn mass ratio of the mixed yarn composed of the above-mentioned threads A, threads B and threads C is as follows: thread A: thread B: Thread C = 40 to 60%: 20 to 30%: 20 to 30%.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the boiling water shrinkage rate of the mixed yarn composed of the above-mentioned threads A, threads B and threads C (hereinafter, may be abbreviated as boiling yield). ) Is 10% or more, and the degree of entanglement CF is 30 or more.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the twist coefficient (α) of the mixed yarn composed of the yarn A, the yarn B and the yarn C is in the range of 1500 to 16000. Has a twist.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the bulkiness of the fabric using at least a part of the mixed yarn composed of the above-mentioned threads A, threads B and threads C is 2.5 cm3. At / g or more, the elongation rate is 10% or more.

According to a preferred embodiment of the polyester mixed yarn fabric of the present invention, the mixed yarn composed of the yarn A, the yarn B and the yarn C is formed by reducing the amount of alkali to at least a part of the mixed yarn. It produces microvoids on the yarn surface.

In the present invention, women's clothing such as dresses, blouses, pants and skirts can be manufactured by using the polyester mixed yarn fabric using the above mixed yarn at least in part.

According to the present invention, the elegant high-quality texture of swelling, warm and natural heathered appearance, soft touch, and repulsive feeling, which are particularly required for women's clothing, stretchability that is comfortable to wear, and practical durability are achieved. It is possible to obtain an excellent polyester mixed fiber yarn cloth and women's clothing using the cloth.

FIG. 1 is a drawing substitute photograph showing the surface of the woven fabric obtained in Example 1 of the present invention. FIG. 2 is a drawing substitute photograph showing a cross section of the woven fabric obtained in Example 1 of the present invention. FIG. 3 is a drawing substitute photograph showing the yarn surfaces of the yarn A, the yarn B and the yarn C used for the woven fabric obtained in the first embodiment of the present invention.

Next, the polyester mixed yarn fabric of the present invention will be described in more detail.

The polyester mixed fiber yarn fabric of the present invention has a conjugated multifilament (thread A) composed of at least two types of polyester polymers having different heat shrinkage properties and a polyester multifilament (thread B) in which isophthalic acid is copolymerized. A polyester composed of a core-sheath type composite multifilament (thread C) in which a polystyrene polymer is arranged in a core component and a polyester polymer is arranged in a sheath component, respectively, using mixed fiber yarns to be mixed. It is a mixed fiber yarn cloth.

As the polyester polymer having different heat shrinkage properties used for the yarn A in the present invention, polyethylene terephthalate alone or copolyester containing 80 mol% or more of the ethylene terephthalate unit is preferably used. Examples of the copolymerization component of copolyester include isophthalic acid, isophthalic acid having a metal sulfonate group, bisphenol accumulation, neopentyl glycol and 1,6-cyclohexanediol. Further, other improving agents such as a matting agent, an ultraviolet absorber, a dyeability improving component and a pigment can be blended in the polyester.

As the polyester polymer having at least two components having different heat shrinkage properties, one in which one is a low-viscosity polyester and the other is a high-viscosity component is preferably used. In the case of homopolyester, it is preferable that the ultimate viscosity of the low-viscosity polyester component is in the range of 0.35 to 0.55 and the ultimate viscosity of the high-viscosity polyester component is in the range of 0.65 to 0.85. be. When the ultimate viscosity of the low-viscosity polyester component exceeds 0.55, the crimp-developing ability of the conjugated multifilament becomes poor, and the crimp-developing ability of the spiral crimp decreases. Further, when the ultimate viscosity of the high-viscosity polyester component exceeds 0.85, the melt viscosity becomes high, which makes spinning and drawing difficult. Further, when the ultimate viscosity of the high-viscosity polyester component is less than 0.65, the crimp-developing ability tends to be poor.

The difference in the ultimate viscosity component between the low-viscosity polyester component and the high-viscosity polyester component is preferably in the range of 0.2 to 0.4. Further, when the copolymerized polyester component is used on one side, the ultimate viscosity difference between the two components can be further brought closer.

Here, the ultimate viscosity was determined as an orthochlororenol solution at a temperature of 25 ° C.

There is a suitable composite ratio for the above low-viscosity polyester and high-viscosity polyester components. That is, the composite ratio of the low-viscosity polyester component and the high-viscosity polyester component is preferably 35 to 65: 65 to 25 by mass ratio, and more preferably 40 to 60:60 to 40.

The above-mentioned thread A is preferably an eccentric core sheath type or side-by-side type composite fiber. The larger the viscosity difference between the low-viscosity polymer and the high-viscosity polymer, the lower the boiling water shrinkage rate of the multifilament yarn itself in the wet heat treatment, but the larger the crimp coil diameter of the expressed crimp.

It is important that the yarn B used in the present invention is formed from a polyester in which the third component is copolymerized. By using the polyester copolymerized with the third component, the high shrinkage property is improved, the shrinkage difference with the other relatively low shrinkage yarn is widened, and the swelling of the polyester mixed fiber yarn fabric can be improved. It is preferable to use isophthalic acid as the third component.

The polyester in which isophthalic acid is copolymerized has lower crystallinity than the homopolyester and has enhanced fiber shrinkage. Therefore, the yarn A and the yarn C described later are mixed. When the yarn is composed, it not only becomes a core yarn component when obtaining the yarn length difference necessary for imparting swelling to the polyester mixed yarn fabric, but also is relatively easy to dye due to the good dust absorption of the dye, and the yarn A Not only is there almost no difference in dyeing and dyeing as the threads B and C, but also by expressing a fine difference in shade, it is possible to have an excellent appearance and swelling with a high-class feeling. In order to effectively exert such an effect, it is preferable that at least 3 to 12 mol% of isophthalic acid is copolymerized as the yarn B, but in order to further improve the high shrinkage property, 2. 2 Bis {4- (2-hydroxyethoxy) phenyl} propane or the like can be copolymerized at the same time.

The thread C used in the present invention is a core-sheath type composite fiber in which a polystyrene polymer is preferably 2 to 15% by mass as a core component and a polyester polymer polymerization mass ratio is preferably 98 to 85% as a sheath component. Is. The use of polystyrene here is to utilize the effect of suppressing the orientation of the polyester polymer in the cooling and solidification process of the spinning process to reduce the shrinkage of the core-sheath type composite multifilament and to use the yarn B having high shrinkage characteristics. This is to increase the difference in yarn length and increase the swelling of the polyester mixed yarn fabric.

The polystyrene polymer is preferably not exposed on the fiber surface, and may be eccentric or concentric, but is preferably concentric in consideration of composite stability. Further, since the polystyrene polymer has a lower specific density than the polyester polymer, it also has an effect of reducing the weight, and is suitable for clothing.

As an example of the method for producing the mixed fiber yarn used in the present invention, it is obtained by spinning and blending the yarn B and the yarn C from the same mouthpiece. At this time, it can be obtained by melt-spinning at a spinning speed of 2500 to 4000 m / min to obtain a highly oriented undrawn yarn, and then drawing and winding the yarn at a draw ratio of 1.3 to 2.0 by a usual method. It can be done. Further, it is more preferable to apply a stretching process at a magnification of the natural stretching region (NDR) to perform thick and thin unevenness in the longitudinal direction, so-called sick and thin stretching, because a finer shade difference is exhibited. Is. Further, it is also effective to further add a general false twisting process to the yarn B and the yarn C to improve the swelling property.

The thread ABC used in the present invention is usually a thread A prepared by spinning and drawing from a mouthpiece, and a thread BC prepared by spinning and drawing two types of threads B and a thread C from another mouthpiece, respectively. It is obtained by compound blending using the processing machine of. As the composite fiber, there is no problem in general methods such as interlaced composite and Taslan blend, and there is no limitation.

The dyeing temperature is required to be 130 ° C. in the woven fabric using at least a part of the mixed yarns composed of the yarns A, the yarns B and the yarns C used in the present invention. When the dyeing temperature is less than 130 ° C, the difference in the degree of dust absorption of the dispersed dye is promoted due to the influence of the difference in crystal orientation of the raw yarn, resulting in a heathered appearance with a clear shade and a difference in hue due to the difference in the dye's footsteps. Although it is heathered, it does not have a beautiful appearance.

The intermediate set temperature is required to be 180 ° C. or lower in the woven fabric using at least a part of the mixed yarn composed of the yarn A, the yarn B and the yarn C used in the present invention. When the intermediate set is performed at a temperature higher than 180 ° C., the crystal orientation of the polyester yarn itself advances too much, the repulsive feeling becomes too high, and the elongation rate significantly decreases.

The total fineness of the mixed yarn composed of the yarn A, the yarn B and the yarn C used in the present invention is preferably 100 decitex or more. When the total fineness is less than 100 decitex, not only the thickness of the polyester mixed yarn fabric becomes thin, but also the feeling of swelling becomes poor and the stretchability required for wearing is insufficient. The upper limit of the total fineness is not particularly limited, but a more preferable range of the total fineness is 100 to 300 decitex, and more preferably a range of 100 to 200 decitex. When the total fineness is 300 decitex or more, the woven fabric for clothing becomes too thick, and when it is used for clothing, it becomes unpleasant and unsuitable.

The yarn mass ratio of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C used in the present invention is: yarn A: yarn B: yarn C = 40 to 60%: 20 to 30. %: It is preferably 20 to 30%. When the mass ratio of the yarn A is less than 40%, the stretchability is poor, and when the mass ratio is larger than 60%, the feeling of swelling is poor. Further, when the mass ratio of the yarn B is less than 20%, the feeling of swelling becomes poor, and when the mass ratio is larger than 30%, the texture becomes hard. Further, when the mass ratio of the yarn C is less than 20%, the feeling of swelling becomes poor, and when the mass ratio is larger than 30%, a feeling of swelling appears.

The boiling yield of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C used in the present invention is 10% or more. More preferably, it is 10% or more and less than 20%. When the boiling yield of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C is less than 10%, the shrinkage difference between the yarn A, the yarn B and the yarn C is less likely to occur, and the feeling of swelling is felt. It becomes scarce. If it is 20% or more, the width will be too wide or the knit will be too hard when it is made into a woven or knitted fabric.

The entanglement degree CF value of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C in the present invention is preferably 30 or more and less than 300. Furthermore, it is preferable that the confounding degree CF value is 50 or more and less than 150. When the entanglement degree CF value is less than 30, the tension applied during weaving causes the mixed yarns composed of the yarns A, the yarns B and the yarns C to be loosened, and single yarn fluff is generated, or the degree of the yarns of each yarn is mixed. However, the variation becomes large in the longitudinal direction, resulting in poor appearance. When the entanglement degree CF value is 300 or more, poor appearance occurs when the woven fabric is used, and the swelling becomes poor.

The twist coefficient (α) of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C in the present invention preferably has an actual twist in the range of 1500 to 16000. More preferably, the twist coefficient (α) is in the range of 1000 to 16000. By applying actual twisting in this range, it is possible to realize a coil structure in a fabric using a mixed fiber yarn composed of yarn-like A, yarn B and yarn C, and to develop stretchability and a feeling of repulsion. When the twist coefficient is less than 1500, the repulsive feeling due to the small bending recovery property is lowered. Further, when the twist coefficient becomes larger than 16000, the texture becomes hard. The twist coefficient here is calculated by the following equation.
・ Twist coefficient (α) = T × √D
(Here, T represents the number of twists (t / m), and D represents the fineness (decitex) of the mixed yarn.)
The bulkiness of the fabric using at least a part of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C in the present invention is preferably 2.5 cm ³ / g or more. More preferably, the bulkiness is 3.0 cm ³ / g or more and ^{less than 5.0 cm 3} / g. If the bulkiness is ^{less than 2.5 cm 3} / g, the swelling may be reduced and the warmth and soft touch when worn may be impaired. When the bulkiness is 5.0 cm ³ / g or more, the swelling feeling becomes too high and the texture becomes fluffy. The bulkiness here is calculated by the following formula.
・ Bulkiness (cm ³ / g) = fabric thickness (mm) / fabric basis weight (g / m ² ) x 1000.

The elongation rate of the fabric using at least a part of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C in the present invention is preferably 10% or more. More preferably, the elongation rate is preferably 10% or more and less than 30%. When the elongation rate is less than 10%, the degree of comfort when actually worn is reduced. When the elongation rate is 30% or more, the tailoring appearance at the time of wearing is lowered, and the thickness of the fabric when made into a woven or knitted material becomes large, which makes it uncomfortable at the time of wearing.

In the present invention, the fabric using at least a part of the mixed yarn composed of the yarn A, the yarn B and the yarn C has a crack on the surface of at least a part of the yarn due to the alkali weight reduction process. Is preferable. By causing cracks on the surface of the filament fiber, fine frictional resistance is generated, the tactile sensation tends to be more silky touch, and the texture becomes excellent. If there are no cracks, the smoothness will be high and the texture will be less luxurious.

Cracks are concentrated in places where the crystal orientation of polyester is not advanced by alkaline weight loss processing using caustic soda. If the degree of alkali weight loss is increased, the yarn will break instead of cracks, leading to defects such as powder falling when the woven fabric is made. There is.

FIG. 1 is a surface image of the woven fabric created in Example 1, and FIG. 2 is a cross-sectional image of the woven fabric created in Example 1. The fiber bundles of threads A, threads B and threads C develop a spiral morphology, and the single yarns of the fiber bundles develop a random morphology, which has excellent effects on swelling, softness, stretchability and repulsion. Demonstrate.

FIG. 3 is a cross-sectional image of threads A, threads B, and threads C used for the woven fabric produced in Example 1. By causing cracks on the fiber surface of the thread A or the thread B, a natural texture is exhibited due to fine frictional resistance, and a warm and natural appearance is exhibited by expressing a difference in shade in the appearance.

As the alkaline weight loss processing method here, it is preferable to adopt a continuous weight loss method. Since the continuous weight loss method can cause hydrolysis from the surface layer of the fiber, it is possible to generate more uniform cracks in the longitudinal direction. In the alkaline continuous weight loss method, high-concentration alkali (caustic soda, caustic potash, etc.) is attached to the surface of the fabric in a fixed amount by padding, and then hydrolysis is promoted from the surface layer of the fiber by steaming treatment at a temperature of 100 ° C or higher. It is a method.

There is no particular limitation on how to use the mixed fiber yarn consisting of yarn A, yarn B and yarn C as a polyester mixed yarn fabric, and it can also be used as a warp yarn of a woven fabric. Can also be used for. The woven fabric structure is not particularly limited such as flat, twill, satin, viera, Amundsen, ox, flat double and warp double, but mixed fibers of yarn A, yarn B and yarn C are formed on the surface of the fabric. It is important to make it come to the touch. As a polyester mixed fiber fabric using at least a part of the mixed fiber yarn consisting of yarn A, yarn B and yarn C, there is no particular limitation on how to use the knitted fabric, and it is knitted and twisted with other fibers. You can also. The knitted fabric may be either a warp knitted fabric or a circular knitted fabric, and the knitted fabric is not particularly limited such as half, denby, punch, tenjiku, milling and smooth, but the yarn A, the yarn B and the yarn C are not particularly limited. It is important in terms of touch that the mixed fibers of the above are exposed on the surface of the fabric. It is possible to provide women's clothing that can be used for elegant purposes such as skirts.

Next, the polyester mixed yarn fabric of the present invention will be described more specifically by way of examples. Each characteristic value shown in the above description and in Examples is measured by the following method.

(1) Total fineness:
JIS L1013 (2010) 8.3.1 b) The positive fineness specified in Method B was measured and used as the total fineness.

(2) Boiling water shrinkage rate:
JIS L1013 (2010) 8.18.1 b) The hot water dimensional change rate specified in Method B was measured and used as the boiling water shrinkage rate.

(3) Confounding degree CF value:
JIS L1013 (2010) 8.15 The degree of entanglement specified was measured and used as the CF value of the degree of entanglement (Coherence Factor).

(4) Metsuke:
JIS L1096 (2010) 8.3.2 a) The basis weight was measured using the method of mass per unit area in the standard state specified in the A method.

(5) Fabric thickness:
JIS L1096 (2010) 8.4. a) The dough thickness was measured using the method specified in Method A.

(6) Weight loss rate:
The weight loss rate was measured by the mass ratio (the following formula) between the dough mass A before the alkaline weight loss processing and the dough mass B after the treatment.
-Weight loss rate (%) = [(dough mass A-dough mass B) / dough mass] x 100.

(7) Elongation rate:
JIS L1096 (2010) 8.14.1. a) The elongation rate specified in the A method was used as the elongation rate.

(8) Appearance of heather:
It is assumed that there is a difference in the shade in the longitudinal direction of the raw yarn and the difference in the shade in the entire fabric, and the following sensory judgments are made by five visual judges, and the judgment is as follows. Was passed.
◎: There is a slight difference in shades as a whole, giving a sense of luxury. Passed.
◯: There is a rough shade difference as a whole.
X: There is no difference in shade.

(9) Repulsion:
When the cloth was bent and the speed of returning from the bent state to the flat state was fast, it was considered that there was a feeling of repulsion, and sensory evaluation was performed by five judges.
◯: The speed of returning from the bent state to the flat state is fast. Passed.
X: The speed of returning from the bent state to the flat state is slow or does not return.

(Examples 1 to 4)
In the formation of the conjugated multifilament, a low-viscosity component made of 100% polyethylene terephthalate having an ultimate viscosity of 0.40 and a high-viscosity component made of polyethylene terephthalate having a limit viscosity of 0.75 are combined at a mass composite ratio of 50:50. A conjugated multifilament undrawn yarn bonded to a side-by-side type was spun and then drawn by a normal drawing machine to produce a 55 decitex-12 filament conjugated multifilament (thread A).

Next, as the polymer forming the highly shrinkable yarn, polyethylene terephthalate obtained by copolymerizing 7 mol% of isophthalic acid was used (thread B). As the polymer forming the low shrinkage yarn, homo-PET having an extreme viscosity of 0.63 was used for the sheath portion, and polystyrene (“Stylon” (registered trademark) 685 manufactured by Asahi Kasei Kogyo Co., Ltd.) was used for the core portion (thread-like C). A composite spinneret designed to melt the polymer on the high shrinkage side and the polymer on the low shrinkage side and to coat the polystyrene in a core-sheath shape with the homo PET on the low shrinkage side is used, and these three components are spun at a spinning speed of 3000 m / min. By melt spinning, a shrinkage difference mixed fiber undrawn yarn was obtained so that the yarn on the high shrinkage side became 55 decitex-12 filaments and the yarn on the low shrinkage side became 55 decitex-24 filaments. The obtained mixed fiber undrawn yarn is drawn and heat-treated at 1.8 times the range of the natural drawn region (NDR) by a usual method, and the mixed fiber chic and thin having a fineness distribution in the fiber longitudinal direction. Manufactured processed yarn. At this time, the thread on the high shrinkage side (thread B) was 30 decitex-12 filaments, and the thread on the low shrinkage side (thread C) was 30 decitex-12 filaments. At this time, the mass ratio of polystyrene to homo PET in the core-sheath type composite yarn, which is a low shrinkage yarn, was 4:96.

Next, each of the above-mentioned threads A, thread B, and thread C was mixed by an interlaced composite method using a normal processing machine to obtain a polyester mixed fiber yarn of 117 decitex-36 filaments. (Thread ABC). At this time, the boiling yield of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C was 12%, and the number of entanglements CF was 47. Table 1 shows the physical characteristics and details of the obtained raw yarn.

Next, the number of twists is 1200 t / m (Examples 2 to 4) and 1400 t / m (Example 1) according to the contents shown in Table 2 by a normal method so that the twist direction of the yarn ABC is S. The actual twist was applied so as to be. The woven fabric having the structure shown in Table 2 in which the obtained yarns were used for the warp and the weft was woven by a usual method.

Next, the woven fabric was scoured by a continuous scouring machine, relaxed at a temperature of 120 ° C. using a liquid flow dyeing machine, and then intermediate set was performed at a temperature of 170 ° C. using a pin tenter to reduce the weight. Alkaline weight loss processing using a liquid flow dyeing machine was performed so that the rate was 11%, a disperse dye was continuously blended so that the color was the color shown in Table 2, and the dyeing was performed at a temperature of 130 ° C., and then 160. The final set was performed at a temperature of ° C. to obtain a woven fabric. Table 2 shows the results of determining the basis weight, the thickness of the fabric, the bulkiness of the obtained four kinds of woven fabrics, the presence or absence of cracks, the appearance of heather, and the feeling of repulsion. A high-quality woven fabric with excellent bulkiness, fine overall appearance, stretchability that makes it comfortable to wear, and a feeling of resilience was obtained.

FIG. 1 is a surface image of the woven fabric created in Example 1, and FIG. 2 is a cross-sectional image of the woven fabric created in Example 1. The fiber bundles of threads A, threads B and threads C develop a spiral morphology, and the single yarns of the fiber bundles develop a random morphology, which has excellent effects on swelling, softness, stretchability and repulsion. Demonstrate.

FIG. 3 is a cross-sectional image of the yarn ABC used for the textile produced in Example 1. By causing cracks on the fiber surface of the thread A or the thread B, a natural texture is exhibited due to fine frictional resistance, and a warm and natural appearance is exhibited by expressing a difference in shade in the appearance.

(Example 5)
A knitted fabric (tenjiku knitting structure) was prepared in the same manner as in Examples 1 to 4, except that the knitting of the tenjiku structure was prepared using the threads A, the thread B, and the thread C. The evaluation results of the obtained knitted fabric are shown in Table 2. It is excellent in bulkiness, and we obtained a high-class knit that has a fine-looking heather tone as a whole, stretchability that makes it comfortable to wear, and a feeling of repulsion.

(Comparative Example 1)
A woven fabric was prepared in the same manner as in Examples 1 to 4 except that a satin-structured woven fabric was prepared using the mixed fibers of the yarn B and the yarn C prepared by the method described in Examples 1 to 4. .. The obtained evaluation results are shown in Table 3. The obtained woven fabric had poor stretchability and repulsive feeling.

(Comparative Example 2)
The woven fabric was prepared in the same manner as in Examples 1 to 4 except that the woven fabric having a vertical double structure was prepared using the yarn A prepared by the method described in Examples 1 to 4. The obtained evaluation results are shown in Table 3. The obtained woven fabric had no heather-like appearance.

(Comparative Example 3)
The same as in Example 5 except that a covering conjugated yarn obtained by covering 20 decitex polyurethane yarns was used for the yarns A prepared by the method described in Examples 1 to 4 to prepare a knitting having a smooth structure. I made a knit. The obtained evaluation results are shown in Table 3. The resulting knit had no heathered appearance.

The polyester blended fabrics produced in Examples 1 to 5 are high-quality fabrics having excellent swelling feeling, softness and warm natural appearance, comfortable stretchability when worn, and excellent resilience. rice field. In addition, the polyester mixed fiber fabrics produced in Comparative Examples 1 to 3 could not obtain a fabric having all of swelling feeling, softness, warm natural appearance, stretchability, and repulsion feeling.

Claims (7)

A polyester mixed fiber fabric made by using at least a part of a mixed fiber yarn composed of a polyester filament containing at least the following filaments A, threads B and threads C.
-Thread A: A conjugated multifilament composed of at least two types of polyester polymers having different heat shrinkage characteristics.
-Thread B: Polyester multifilament obtained by copolymerizing isophthalic acid.
-Thread C: A core-sheath type composite multifilament in which a polystyrene polymer is arranged in a core component and a polyester polymer is arranged in a sheath component. The polyester mixed fiber fabric according to claim 1, wherein the mixed fiber yarn composed of the yarn A, the yarn B, and the yarn C has a total fineness of 100 decitex or more. The polyester mixed fiber fabric according to claim 1 or 2, wherein the thread mass ratio of the mixed fiber composed of threads A, threads B and threads C is the following ratio.
-Thread A: Thread B: Thread C = 40-60%: 20-30%: 20-30% The polyester blend according to any one of claims 1 to 3, wherein the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C has a boiling yield of 10% or more and a entangled number CF value of 30 or more. Textile fabric. The invention according to any one of claims 1 to 4, wherein the twist coefficient (α) of the mixed fiber yarn composed of the yarn A, the yarn B and the yarn C has an actual twist in the range of 1500 to 16000. Polyester mixed yarn fabric. The polyester mixed yarn fabric according to any one of claims 1 to 5, wherein the bulkiness of the woven or knitted fabric is 2.5 cm ^{3 / g or more and the elongation rate is 10% or more.} Any of claims 1 to 6, wherein the mixed yarn composed of yarn A, yarn B and yarn C causes cracks on the yarn surface of at least a part of the mixed yarn due to alkali weight loss. The polyester mixed yarn cloth according to.

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