JPH0441732A - Composite fiber yarn of polyester fiber with wool - Google Patents

Abstract

PURPOSE:To provide the subject fiber yarn having excellent colordeveloping property, same coloring property and soft touch, free from the slippage of filaments and suitable for high grade wears by blending wool with the fibers of a specific polyester copolymerized with polyethylene glycol and subsequently twisting the blend. CONSTITUTION:(A) Filaments catable of being dyed under the ordinary pressure and having a single filament strength of 3.0-6.0g/d, a boiling water shrinkage degree of 3-23% and a shrinkage stress of 0.3-0.9 g/d are prepared of a copolyester copolymerized with 6.0-10wt.% of polyethylene glycol having an average mol.wt. of 500-4000. (B) Short fibers mainly comprising wool are blended with the component A preferably in an A:B wt. ratio of (5-50):(95-50), and e.g. when the component B is spun, the component A is superposed on the component B and twisted with a spindle in a twisting coefficient of 100-220 to provide the objective composite yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a composite fiber yarn of polyester and wool.

The composite fiber yarn of the present invention can be made into woven fabrics, knitted fabrics, decorative yarns, etc., and can be optimally used for high-end clothing by taking advantage of its characteristics.

[Prior Art] Conventionally, composite fiber yarns of polyester filaments and wool have been known as core yarn, silofil, and covering yarn. It is a high-quality mixed yarn. In particular, compared to spun yarns made only of wool or polyester short fibers, it is attracting attention as a fine count worsted yarn due to its less fluff, roundness, and drapeable texture.

However, because polyester is difficult to dye, if it is dyed under the same conditions as wool, the color will be lighter and there will be a color difference from wool, resulting in a defect called irritability, and it will not be possible to obtain the same color property as wool. On the other hand, when dyeing is carried out at 130 to 135° C., which is the normal dyeing temperature for polyester, the same color property as that of wool can be obtained, but the texture of the wool is impaired, resulting in a rough texture. In addition, the wool is greatly degraded, and its strength and elongation are significantly reduced. Therefore, the same color property and the texture of wool,
Due to the balance of strength and other factors, the dyeing temperature is currently about 110 to 120'C, and carriers and the like are used in combination, and while a compromise has been found, production is currently being carried out with problems.

On the other hand, the shrinkage properties of polyester for composite fiber yarns are currently being used without much consideration. If very low shrinkage yarn is used, the intertwining with the wool will be insufficient, and the filament yarn will easily slip off from the wool, or the product will have misalignment defects, or if high shrinkage yarn is used, The tightening force is strong, causing problems such as the texture becoming rough and hard. There is a similar problem with regard to the number of twists of composite fiber yarns, as the relationship with yarn shrinkage cannot be fully understood.
Currently, we are responding on an ad hoc basis.

Against this background, there has been a desire for a polyester filament composite fiber yarn that can be dyed in the same bath as wool using normal pressure dyeing and that does not impair the texture of wool.

In order to solve this problem, the following atmospheric pressure dyeable polyesters have been proposed.

5 mol% (8% by weight) of sodium sulfoisophthalate
The cationic dye-dyable polyester copolymerized above is disclosed in, for example, JP-A-61-34022 and JP-A-60-24.
No. 6847, JP-A-60-173185, JP-A-60
-88190, etc., respectively.

Furthermore, easily dyeable polyester fibers copolymerized with aromatic dicarboxylic acids, aliphatic dicarboxylic acids, or aliphatic diols are disclosed, for example, in JP-A-51130320 and JP-A-5.
No. 7-30169 and the like.

[Problems to be Solved by the Invention] However, although the dyeability of cationic dyeable polyester copolymerized with sodium sulfoisophthalic acid is improved, the yarn strength is 2 to 2.5 g/d in terms of single fiber strength.
There are problems such as the shrinkage stress is as low as 2.5 to 2.8 g/d, insufficient shrinkage can be obtained during processing, the chemical resistance is poor, and the light fastness of cationic dyes is poor.

Easy-to-dye polyester fibers copolymerized with aromatic dicarboxylic acids, aliphatic dicarboxylic acids, or aliphatic diols are
Although it is getting closer to becoming dyeable under normal pressure, there are many problems as follows.

For example, polyesters copolymerized with aliphatic dicarboxylic acids such as adipic acid, sebacic acid, and azelaic acid and aliphatic diols such as butanediol and neopentyl glycol, isophthalic acid, 1゜2-bis(phenoxy)ethane- For polyester fibers copolymerized with aromatic dicarboxylic acids such as 4,4-dicarboxylic acids, the copolymerization ratio must be 15% by weight or more to make them dyeable under normal pressure, which leads to a decrease in yarn strength. , decreased light fastness, poor yarn quality,
There were problems such as a decrease in heat resistance and poor spinning properties, and the results were not satisfactory.

In view of the shortcomings in the prior art, the present inventors have made extensive studies on polyester to be mixed with wool. By incorporating polyester filament yarn having a specific composition and shrinkage characteristics into wool, the present inventors have found that the same color property,
The present invention was developed based on the discovery that the hand feel can be significantly improved.

That is, the object of the present invention is to have high color development, high isochromism,
The soft texture of wool is utilized to prevent the thread from slipping (,
To provide a composite fiber yarn of polyester and wool that is uniform and has no problem in terms of strength.

[Means for Solving the Problems] In order to achieve the above object, the polyester and wool composite fiber yarn of the present invention has any of the following configurations.

That is, it is a composite fiber yarn consisting of a polyester filament yarn and wool, and the polyester has an average molecular weight of 500 to 40.
00 polyethylene glycol copolymerized in an amount of 6.0 to 10% by weight, it is dyeable under normal pressure and has a single fiber strength of 3.0 to 6.0%.
0 g/d, boiling water shrinkage rate (hereinafter referred to as boiling yield) of 3 to 23%,
A composite fiber yarn of polyester and wool, which has a shrinkage stress of 0.3 to 0.9 g/d and is made by heating short fibers mainly made of wool and a twist coefficient in the range of 100 to 220, or Composite fiber yarn consisting of polyester filament yarn and wool, wherein the polyester has an average molecular weight of 500 to 40.
00 polyethylene glycol copolymerized in an amount of 6.0 to 10% by weight, it is dyeable under normal pressure, and the filament yarn is a mixed fiber yarn consisting of a low shrinkage yarn and a high shrinkage yarn, and is a short yarn mainly made of wool. The yarn length difference between low shrinkage yarn and high shrinkage yarn (hereinafter referred to as D
It is a composite fiber yarn of polyester and wool characterized by having a FL) of 3 to 20%.

Note that in the present invention, DFL refers to a value determined by the following measurement.

20c made from composite fiber yarn that has undergone heat treatment such as scouring and dyeing.
The polyester filament mixed fiber yarn was cut into lengths of m and collected, and then separated into single fibers of different lengths on a graduated glass plate. To remove crimps from the filaments, apply a small amount of glycerin and measure the length of the filaments while slowly stretching them with your fingers.

The difference between the average yarn length 11 of the low shrinkage yarn group with long single fiber length and the yarn length 12 of the high shrinkage yarn group with short single fiber length is defined as DFL.

The atmospheric pressure dyeable polyester used in the present invention has an average molecular weight of 50
0-4000 polyethylene glycol 6.0-10
It is copolymerized by weight%.

If the average molecular weight is less than 500, a part of the polyethylene glycol will scatter during copolymerization, the copolymerization will not be constant, and the resulting yarn will have strong elongation, shrinkage, uneven dyeing, etc., which is not preferable. . On the other hand, when polyethylene glycol having an average molecular weight exceeding 4000 is used, the uncopolymerized high molecular weight increases, resulting in a decrease in dyeability and light fastness, which is not preferable.

Further, if the copolymerization rate of polyethylene glycol is less than 6.0% by weight, the color development is insufficient and normal pressure dyeability cannot be obtained. On the other hand, if it exceeds 10% by weight, even if the color development is sufficient, physical properties such as low fiber strength, too high shrinkage, and alkali resistance deteriorate, resulting in a decrease in the quality of the final product.

In addition, since polyethylene glycol is copolymerized with polyester, there is a tendency for the oxidative decomposition resistance to be lower than that of ordinary polyester fibers, so it is preferable to incorporate an antioxidant into the polyester to improve this. It is done.

Preferred antioxidants include, for example, hindered phenol compounds which are phenol derivatives having sterically hindered substituents adjacent to the phenolic hydroxyl group.

The blending amount is 0.05 to 1.0 per polyester fiber.
Weight percent is preferred.

The polyester that is the material of the filament used in the present invention may be copolymerized with other copolymer components or blended with other polymers, if necessary.

For example, a small proportion of a chain branching agent such as pentaerythritol, trimethylolpropane, trimellitic acid, or boric acid may be copolymerized.

In addition, arbitrary additives such as matting agents such as titanium oxide, ultraviolet absorbers, flame retardants, pigments, etc. may be included as necessary.

Polyester, which is the material of the filament used in the present invention, is dyeable under normal pressure, and in the present invention, dyeability under normal pressure is defined as follows. That is, black lightness L9g when dyed at 98°C and black lightness L+3 when dyed at 130°C.
A case where the difference from 0 is 1.0% or less is considered to be dyeable under normal pressure. L
If the difference between 9B and Li2O exceeds 1.0%, 1
The color development during dyeing at 98° C. is insufficient compared to the color development during dyeing at 30° C., and complete normal pressure dyeability cannot be obtained.

In the present invention, L9B and Li2O are as described above,
The black brightness when dyeing at 98°C and the black brightness when dyeing at 130°C, respectively, are the values measured by the following method.

<Method for measuring L, 8, Li2O> A sock knitted fabric (-mouthpiece knitted fabric) is knitted from polyester filament fibers, and then sanded as a scouring agent) C-2
9 (manufactured by Sanyo Chemical Co., Ltd.) by a conventional method at 98°C under boiling for 20 minutes, and after air drying, it was heated to 18°C in a relaxed state.
After dry heat setting at 0° C. for 3 minutes, dyeing, washing with water, reduction washing, washing with water, and air drying are carried out under the conditions described below.

Next, the lightness of the black color is measured as an L value (%) using a multi-light source spectrophotometer MSC2 (manufactured by Suga Test Instruments ■).

The black lightness (L value) when the dyeing temperature is 98°C is 8,
The black lightness (L value) when the dyeing temperature is 130°C is L13
Set to 0.

Staining conditions: (a) Dye: Dianix Black BG-FS
200% product (manufactured by Mitsubishi Kasei ■) Dyeing concentration near % ovr Dyeing aid: Nikka Sunsalt # 1200 (manufactured by NICCA Chemical ■) Dyeing aid concentration: 0.5 g/l Dyeing bath PH: 6 Dyeing bath ratio: 1/30 (B) Water washing (C) Reduction cleaning Cleaning agent concentration Cleaning agent: Hydrosulfite 2g/l caustic soda
2 g / II Sanded G-291, g
/l (manufactured by Sanyo Kasei ■) Washing temperature 1 hour = 80°C, 20 minutes Bath ratio: 1/30 (d) Washing with water, air drying The single fiber strength of the polyester filament used in the present invention is 3.0 to 6.0 g/d That is. If the single fiber strength is less than 3° Og/d, there will be problems such as product physical properties and thread breakage during processing of composite fibers, resulting in poor practicality. on the other hand,
It is generally difficult to obtain polyester fibers whose single fiber strength exceeds 6.0 g/d.

When using a single component polyester filament in the composite fiber yarn of the present invention, it is preferable that the boiling yield of the polyester filament is 3 to 23%, more preferably 6 to 15%. If the boiling yield is less than 3%, there will be insufficient shrinkage, and the polyester will easily slip off from the composite fiber yarn, and the yarn will have a poor tightness and become fluffy. On the other hand, if the boiling yield exceeds 23%, the yarn will feel too tight and the texture will be rough and stiff, which is not preferable.

In the composite fiber yarn of the present invention, when the polyester filament is a mixed fiber yarn consisting of a low shrinkage yarn and a high shrinkage yarn, the DFL is set to 3 to 20%, preferably 5 to 15%, as described below. It is preferable from the viewpoint of imparting a good sense of fullness due to the development of yarn length differences when subjected to heat treatment such as a dyeing process.

When DFL is less than 3%, the above-mentioned improvement effect is small.

On the other hand, if the DFL exceeds 20%, the loops on the low-shrinkage yarn side will be large, making the yarn non-uniform and having a hard texture, which is undesirable.

The mixing ratio of low-shrinkage yarn and high-shrinkage yarn is preferably about 1:1 from the viewpoint of imparting a good fluffy feeling due to the difference in yarn length.

When a mixed fiber yarn is used as a filament in the present invention, the DFL can be easily adjusted to 3 to 20% by combining it with boiling water (95 to 98° C.) treatment such as scouring and dyeing.

For example, it can be obtained by fabricating composite fiber yarn and then carrying out continuous desizing and dyeing at the same time. Yarn dyeing (yarn dyeing)
In this case, it is usually obtained by applying steam treatment (90 to 98° C.) which is a bulky treatment. By performing both piece dyeing and yarn dyeing under low tension,
It is preferred that the filaments in the composite fiber yarn are sufficiently relaxed and contracted.

The shrinkage stress of the polyester filament used in the present invention is 0.3 to 0.9 g/d. 0゜3g
If it is less than /d, it will not be able to overcome the interfiber binding force with wool and the fabric structure binding force during heat treatment, resulting in insufficient shrinkage.

On the other hand, it is generally difficult to obtain polyester fibers exceeding 0.9 g/d.

The boiling water shrinkage rate, shrinkage stress, and yarn length difference in the present invention were measured by the following methods.

<Measurement of boiling water shrinkage rate> A load of 15 cm/d was applied to the polyester filament yarn, and the length was measured. (20).

Form this into a ball, wrap it in gauze, and heat it in boiling water at 98°C for 20 minutes. Next, it was air-dried, and the length was measured (l) with the same load as before treatment.
+)L, calculate the boiling water shrinkage rate S using the following formula.

S (%) = [(A'o Il+) /10]
Measurement of X100 Shrinkage Stress> Take a polyester filament yarn Loan and tie both ends to form a loop. This was subjected to dry heat treatment using a heat shrinkage stress measuring device manufactured by Kanebo ■ under a load of 30 ■/d while gradually increasing the temperature from room temperature to 200°C. The maximum shrinkage stress (g) at this time is read and divided by the total fineness of the yarn (D) to obtain the shrinkage stress per single fiber fineness (■/d).

The method for controlling the shrinkage characteristics of the polyester filament used in the present invention is not particularly limited, but after polymerizing the polyester having the above composition and spinning it at a normal spinning speed (1000 to 1500 m/min), The heat treatment temperature for drawing the filament was set to 1
The boiling yield can be easily lowered in the range of 20 to 190°C.

Note that the heat treatment can be performed by a conventional method using a hot plate or a hot pin.

When polyester filament is made into a mixed fiber yarn of high shrinkage yarn and low shrinkage yarn, methods for obtaining high shrinkage yarn include a method of lowering the heat treatment temperature to 100 to 160°C and drawing, or a method of drawing at a spinning speed of 2000 to 4000 m/s. Examples include a method of spinning in minutes, or a method of copolymerizing a small amount of a fourth component such as isophthalic acid or bisphenol-based carboxylic acid in addition to the copolymer composition consisting of the three components during polymerization.

In addition, as a method for obtaining low shrinkage yarn, polyester filament yarn is heated to a temperature of 180 to 2
Further heat treatment at 20°C or spinning speed of 5000
Examples include a method in which the speed is within the range of ~7000 m/min.

As the fiber blending method, a method of blending a high shrinkage yarn and a low shrinkage yarn by air entangling or the like, a simultaneous spinning and blending method of blending the fibers at the same time as spinning, etc. can be applied.

As for the form of the polyester filament yarn used in the present invention, it is preferable to use a drawn yarn without shrinkage (raw silk) or a filament with little shrinkage, from the viewpoint of avoiding undesirable texture due to excessive bulk. .

Although the fineness of the polyester filaments used in the present invention is not particularly limited, it is preferable to use filaments of 20 to 150 D as conjugate fibers to wool. For example, in order to obtain a fine count conjugate fiber yarn with a single yarn count of 120 to 80, a polyester of 20 to 30D is mixed with a medium count of 60 to 48D.
30-50D for the number, 75 for the thick number 36-30
It is preferable to mix polyester of ~150D.

Single fiber fineness is 0.0 for fine count. 5 to 2 d, preferably 2 to 5 d for medium count.

The twist coefficient of the composite fiber yarn of the present invention is 100 to 220. If the twist coefficient is less than 100, it is easy to slip.
In other words, the wool tends to separate from the filaments and become fluffy, while those with a fiber count exceeding 220 have a hard texture due to the strong twist.

Furthermore, those with a twist coefficient of 100 to 150 have a puffy feel and are suitable for autumn and winter applications, and those with a twist coefficient of 150 to 220
Since it has a moderate crispness, it is suitable for spring and summer applications.

Note that the twist coefficient is a value calculated using the following formula.

Twist coefficient = T/v'N However, T: Number of twists (times/m), N: Metric count The wool for the composite fiber used in the present invention is 100% wool.
This is particularly preferable since it can exhibit the characteristics of wool, but small amounts of other short fibers may be included as long as the object of the present invention can be achieved.

In this case, when short fibers made of pressure-dyable polyester, which is the material of the filaments used in the present invention, are blended with wool, the polyester content increases, so it has the effect of improving dimensional stability and wash and wear properties. Yes, it is preferable. In addition, it is preferable to blend wool with polyester short fibers dyeable with normal pressure cation dyes, as this provides a different color effect and anti-pilling properties. As another combination, a mixture of wool and pressure-dyable staple fibers such as polyacrylic, nylon, and cotton can also be preferably used.

Furthermore, by mixing a small amount of filament made of nylon, cationic dye-dyeable polyester, polyester homopolymer, etc. with the polyester filament used in the present invention, a unique color effect and heathered effect can be realized.

The mixing ratio of polyester and short fibers in the composite fiber yarn used in the present invention is not particularly limited, but it is preferable to mix 5 to 50% by weight of filaments and 95 to 50% by weight of short fibers. In this case, increasing the proportion of short fibers has the advantage of increasing the texture effect and making it easier to process composite fibers.

A preferred example of the form of the composite fiber yarn used in the present invention will be explained with reference to the drawings.

FIG. 1(a) is a side view of a sheath/core yarn type, in which the sheath portion is short fibers 2 mainly made of wool, and the core portion is polyester filament 1 used in the present invention. FIG. 1(b) shows a cross-sectional view. It is a model diagram of filaments contracted by dyeing heat after being combined and heated. The one shown in FIG. 1 is a preferable form that can maximize the soft feel of the short fibers in the sheath part while having the rigidity, strength, and high physical properties of the polyester in the core part.

FIG. 2 shows a silo filter ribbon in which filaments and staple fibers are uniformly dispersed. Since there are many intertwining points between the filament and the wool, it is preferable because the yarn has less fluff compared to the type shown in Figure 1, the yarn has a roundness, and the filament has a glossy and refreshing feel.

FIG. 3 shows a covering type, and its dispersibility is smaller than that in FIG. 2. Since there are many opportunities for the filaments to be exposed on the surface, a texture with the crisp feel of polyester can be obtained.

FIG. 4 shows a sheath/core yarn type in which the filaments are a mixture of low shrinkage yarn and high shrinkage yarn. Differences in yarn length occur due to the dyeing heat, with high shrinkage filament 1 in the core section being replaced by low shrinkage filament 1 in the middle 6 section.
' are intertwined around this. In contrast to the filament shown in FIG. 1, which is a single yarn, this is the most preferable form as it has a more fluffy and soft feel and also has the functionality of polyester.

In addition, the method for producing the composite fiber yarn of the present invention involves, as is usually done, filaments being arranged in parallel or superimposed on short fibers supplied from a fleece during spinning of short fibers, and then passed through a front roller and twisted by a spindle. can get. 1st
The sheath/core yarn type shown in the figure can be obtained by opening short fibers, overlapping filaments on top, and twisting them. In the case of the silofil shown in FIG. 2, short fibers are arranged on both sides, filaments are arranged in the center, and the fibers are twisted together. In the case of Figure 3,
It can be obtained by arranging short fibers and filaments in parallel.

Dyeing can be carried out using disperse dyes and acid dyes under normal pressure and without a carrier. After dyeing, soap and finish using the usual method.

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

[Example] The evaluation items in this example were measured as follows.

<Coloring brightness> Composite fiber threads are dyed in chromatic colors with disperse dyes and acid dyes, and the brightness of the surface of the dyed material is measured using a multi-light source spectrometer MSC-2 model (manufactured by Suga Test Instruments) to measure the L value (%). Measure. The smaller the L value, the better the color development.

<Same color> The hue of wool dyed with a disperse dye in the same bath as polyester and further dyed with an acid dye was graded and judged (grade 5: two hues are very similar and good with no irritation, grade 4: the hue is good). They are very similar and have no irritation and are good, 3rd grade two hues are somewhat similar and normal, 2nd grade two hues cannot be said to be similar and are irritating and bad, 1st grade: The hues are not similar at all and it is irritating and bad) .

Bending stiffness of fabric〉 Texture measuring instrument KES-FB-2 type (KATOTEC
(manufactured by).

<Masatsu coefficient of fabric surface> As in the measurement of bending rigidity above, the texture measuring instrument KES-F was used.
Measurement was carried out using Model B-4 (manufactured by KATOTEC).

<Evaluation of Texture of Fabric> The fabric was sensory evaluated on the following four levels. ◎: Soft and bulge, moderate tension, and firmness; ○: Comparably good quality; △: Soft feel, lacks bulge, and poor hardness; X: Poor roughness and hardness.

Strong fold friction of fabric> Based on JIS L 1096^-3 law (Universal Penal Code).

<Sliding properties of composite fiber yarn> The process of winding the dyed composite fiber yarn into a cone shape using a winder with a guide was repeated 10 times. The degree to which the wool staple fibers slipped off the filament yarn when the yarn was strained by the resistance of the guide during winding, and the fluffiness of the wool staple fibers was graded in the following five grades. Good with the least amount of fluff (grade 5), Good with the least amount of fluff (grade 4), Average (grade 3), Poor with some fluff (grade 2), Poor with noticeable fluff. Things (grade 1).

Dyeing density> The dyeing density (%0W1) is the weight ratio to polyester in the case of a disperse dye, and the weight ratio to wool in the case of an acid dye.

The overall evaluation was in four stages: ◎: most excellent, ○: good, △: slightly problematic, and ×: problematic.

(Example 1) <Production method of normal pressure dyeable polyester> 100 parts of dimethyl terephthalate, 80 parts of ethylene glycol, 0.3 part of antioxidant Irganox-1010 (manufactured by Keba Geigy), dimethylpolysiloxane (manufactured by Toshiba Co., Ltd.) A mixture of 0.01 part of silicone oil manufactured by Silicone ■, 0.04 part of cobalt acetate, and 0.04 part of antimony trioxide was heated to 130°C to 230°C, methanol was extracted, transesterification was carried out, and the average Add 8.3 parts of polyethylene glycol with a molecular weight of 1000, and then add 23 parts of polyethylene glycol with a molecular weight of 1000.
The reaction was carried out at 0°C for 30 minutes. Thereafter, 0.03 part of trimethyl phosphate was added, and after 5 minutes, 0.05 part of titanium dioxide was added as a 20% by weight ethylene glycol slurry to obtain a low polymer. The obtained low polymer was further heated gradually from 230°C to 280°C, and the pressure was gradually reduced from atmospheric pressure to a high vacuum of 1 wHg or less for polycondensation, resulting in a polymer with an intrinsic viscosity of 0.703 and a softening point of 257°C. Modified polyethylene terephthalate was obtained.

The average molecular weight in the polyester thus obtained is 1
The copolymerization rate of 000 polyethylene glycol was 7.5 times (Example 1■).

Further, copolymerization was carried out in exactly the same manner as above except that 6.6 parts and 11.0 parts of polyethylene glycol with an average molecular weight of 1000 were added, respectively, and the copolymerization rate of polyethylene glycol with an average molecular weight of 1000 was 6.0% by weight ( Example 1
■), 10.0% by weight (Example 1■) of copolymerized polyester was obtained.

The obtained polyester chips were placed in a dryer at an atmospheric temperature of 1
It was dried at 50° C. for 5 hours while maintaining a reduced pressure of 1 mmHg or less. The dried chips were spun using a nozzle with 24 holes at a spinning temperature of 290° C. and a spinning speed of 1350 m/+ain. Subsequently, the hot roller temperature was 80°C and the hot plate temperature was 165°C.
°C1 stretching ratio 3.37 times, stretching speed 800 m/mi
A 50 denier, 24 filament yarn was obtained.

The obtained drawn yarn (Example 1■) had a single fiber strength of 5.1 g/
d, elongation 30%, boiling yield 11-%, shrinkage stress 0°72 g
The yarn had physical properties of /d. In addition, the drawn yarn (Example 1■) had a single fiber strength of 5.2 g/d, an elongation of 31%, and a boiling yield of 1
0.5, shrinkage stress 0.75 g/d, drawn yarn (Example 1■
) has a single fiber strength of 4.8 g/d, an elongation of 34%, and a boiling yield of 1
1%, and the shrinkage stress was 0.71 g/d.

Three of the polyester filament yarns thus obtained were arranged to have a diameter of 150D, and each was knitted into a 24-gauge sock knitted fabric.

Next, scouring, setting, and dyeing are carried out by conventional methods to obtain L98, LI
The results of measuring 30 are shown in Table 1.

Method for producing dyed fabric of composite fiber yarn
00% (equivalent to 138D) was processed into a composite fiber in a sheath/core yarn type as shown in FIG. 1 in a spinning process. The composite fiber was made of wool that was spread, and a drawn polyester yarn was layered thereon, passed through a front roller, and twisted with a spindle to a twist coefficient of 180. Then 8
0℃.

Steamed for 30 minutes and set the twist. The obtained composite fiber yarn was a No. 48 single yarn and had a polyester blend ratio of 27% by weight.

Next, the composite fiber yarns were used as warp and weft yarns to weave a 2/1 twill fabric, respectively.

Next, continuous relaxing scouring (98°C) was carried out in the form of a spread cloth.

7 minutes), and was sufficiently shrunk and heat treated.

Next, the carpet was washed and set under dry heat (160° C., 40 seconds), and the black disperse dye 7% OWF and the black acidic metal-containing dye for wool KaYakalan Black BGL (manufactured by Nippon Kayaku ■) 7% OWF were mixed. It was dyed under the same conditions of 98°C and 960 minutes without using a carrier. After dyeing, soda ash 1g//, non-ionic detergent 0. 5g/
Finished by soaping in a weak alkaline bath at 70°C for 20 minutes and washing with water. The finished width of the fabric is 154an.

The vertical density was 102 lines/inch, and the horizontal density was 78 lines/inch.

The results are shown in Table 1.

(Comparative Examples 1 to 3) Polymerization and spinning were carried out in exactly the same manner as in Example 1, except that the copolymerization rate of polyethylene glycol having an average molecular weight of 1000 was changed.

Comparative Example 1 is a case where the copolymerization rate of polyethylene glycol having an average molecular weight of 1000 is 4.5% by weight (Comparative Example 1)
Comparative Example 2 is a case where the copolymerization rate of polyethylene glycol having an average molecular weight of 1000 is 1265% by weight (Comparative Example 2), and Comparative Example 3 is a case where a polyester homopolymer is used (Comparative Example 3).

The single fiber strength of the drawn yarn was 5.1 g/d (Comparative Example 1).
), 2.8 g/d (Comparative Example 2), and 5.3 g/d (Comparative Example 3).

Three of the polyester drawn yarns thus obtained were aligned to have a diameter of 150D, each of which was knitted into a sock fabric with a 24 gauge, and evaluated in the same manner as in Example 1. In addition, the composite fiber yarn was made into a plain weave, dyed and finished, and evaluated in the same manner as in Example 1. In addition, only Comparative Example 3 was dyed, and the carrier was Teryl Carrier V-10 (manufactured by Meisei Kagaku ■).
5% owf was added and dyed at 115°C for 60 minutes.

Samples obtained in Examples (Example 1■, Example 1■, Example 1
Item (2) had excellent color development and color consistency, had a soft texture, and exhibited extremely good properties with no problem with strength.

On the other hand, among the samples obtained in Comparative Examples, Comparative Examples 1 and 3 did not exhibit normal pressure dyeability and had poor color development. Comparative Example 2 had a problem of low single fiber strength.

The results are also shown in Table 1.

(Example 2. Comparative Example 4) Polyethylene glycol with an average molecular weight of 1000 was
Polymerization and spinning were carried out in the same manner as in Example 1, except that the weight percent copolymerization was carried out. Stretching was carried out by changing the hot plate temperature during stretching to 120 to 180°C and increasing the boiling yield of the drawn yarn to 6.7% (Example 2■), 9
．． It was controlled to 3% (Example 2■) and 14.7% (Example 2■), and yarn was produced. Single fiber strength is 5.0g/d, 5.
0g/d, 4.9g/d, and the shrinkage stress is 0.70g
/d, 0.69 g/d, and 0°62 g/d. The drawn yarn was 75 denier and had 36 filaments, and exhibited normal pressure dyeability.

Next, the obtained polyester drawn yarn was made of 100% wool (
(equivalent to 20 OD) was made into a composite fiber in a spinning process into a silo filter tube as shown in Fig. 2.

The obtained composite fiber yarn was a No. 33 single yarn, a twist coefficient of 130, and a polyester blend ratio of 27% by weight.

Next, the combined twisted yarns were set to prevent twisting, and then used as warp and weft yarns to weave into plain weave fabrics. Weaving width is 1
70cm, vertical density 85 lines/inch, horizontal density 72 lines/inch.

Next, scouring/heat treatment, washing, setting, dyeing, finishing, and evaluation were performed according to Example 1 except for the dyeing conditions.

In addition, the dyeing is done using disperse dye Ka7alon Poly B.
lueFBL-E (Nippon Kayaku ■) 0.1%owf
, acid dye KaYanol Milling Blue
BY (Nippon Kayaku■) 0.1% owl was mixed, 9
Dyeing was carried out at 8° C. for 45 minutes without using a carrier. The results are shown in Table 2.

On the other hand, comparative polishing was performed in which the boiling yield of the drawn yarn was controlled to 2.8% by increasing the hot plate temperature during drawing (Comparative Example 4■), and the boiling yield was controlled to 25% by lowering the hot plate temperature. 1% (
Comparative Example 4■) was evaluated in the same manner as in Example 2. The results are shown in Table 2.

Table 2 The samples obtained in Example 2 (Example 2 (2), Example 2 (2), and Example 2 (2)) had excellent texture and exhibited extremely good properties with no problems in slipping properties.

On the other hand, among the samples obtained in Comparative Examples, Comparative Example 4■ had poor sliding properties, and Comparative Example 4■ had poor texture.

(Example 3. Comparative Example 5) Polyethylene glycol with an average molecular weight of 1000 was
Polymerization and spinning were carried out in the same manner as in Example 1, except that the weight percent copolymerization was carried out. For stretching, the hot plate temperature during stretching was changed to 120 to 180°C, and further heat treatment was performed at 180 to 2) 0°C while running the drawn yarn continuously in a temporary twisting machine without using a spindle. Drawn yarns with different boiling yields in the range of 22.5% were obtained.

The drawing is 30 denier, 12 filaments without crimping.

Next, the drawn yarns having different boiling yields were entangled with air to be mixed.

The blended yarns include a blended yarn of a low shrinkage yarn with a boiling yield of 6.2% and a high shrinkage yarn of 15.9% (Example 3■), a blended yarn with a boiling yield of 6.2% low shrinkage yarn and a boiling yield 11 , 1% high shrinkage yarn mixed yarn (Example 3 ■)
, a low shrinkage yarn with a boiling point of 4.0% and a blended yarn with a boiling point of 22.5% (
Example 3). The single fiber strength and shrinkage stress of the mixed yarn were 5.2 g/d and 0.78 g/d, respectively (Example 3
■), 5.1g/d, 0.72g/d (Example 3■)
,4. 8 g/d, 0. 79 g/d (Example 3■). All exhibited dyeability under normal pressure.

Next, 100% wool (equivalent to 113D) was added to the obtained mixed fiber yarn (60D, 24 filaments) in a spinning process to form a composite fiber into a sheath/core yarn type as shown in FIG. 4. The obtained twisted yarn was a No. 52 single yarn, had a twist coefficient of 120, and had a polyester blend ratio of 34.7% by weight.

Next, after being set at 85° C. for 30 minutes to prevent twisting, the entire structure was subjected to steam heat treatment at 98° C. for 30 minutes. The heat treatment was carried out under low tension and sufficiently relaxed.

Next, skein dyeing is performed using a package dyeing machine, and the vertical and
Each piece was woven horizontally into a plain weave, scoured, set, and finished. The dyeing was carried out using a mixture of brown disperse dye and brown acid milling dye for 986C960 minutes without using a carrier.

The DFL of the finished mixed yarn is 9.7% (Example 3■
), 4.9% (Example 3■), 18.5% (Example 3■
)Met. The evaluation results are shown in Table 3.

On the other hand, as a comparative example, one with 0% DFL (Comparative Example 5)
), 2.2% (Comparative Example 5■) was evaluated in the same manner as in the Examples. The evaluation results are shown in Table 3.

Table 3 It had a nice touch, moderate tension, and a nice waist.

On the other hand, in Comparative Example 5, slipping property was a problem. Comparative Example 5■ had a problem of rough and hard texture.

(Example 4. Comparative Example 6) Using the drawn yarn obtained in Example 1■, the twist modulus of the composite fiber was 160 (Example 4■), 110 (Example 4■), and 20.
The fabric was evaluated according to Example 1 except for the three conditions of 0 (Example 4■). The short fibers used in the composite fibers were blended yarns of wool and polyester short fibers copolymerized with 4.9 mol% of 5-sodium sulfoisophthalic acid (
Blend rate, wool 65% by weight). The results are shown in Table 4.

The samples obtained in Example 3 (Example 3■, Example 3■, Example 3■) had a soft surface with a very fluffy feeling, while the comparative examples had twist coefficients of 80 (Comparative Example 6■) and 250 (Comparative Example 6■) were evaluated in the same manner, and the results are also shown in Table 4.

The samples obtained in Example 4 (Example 4■, Example 4■, Example 4■) had excellent texture and no problem with slipping properties.
It showed extremely excellent characteristics.

Note that Example 4■, which had a large puffiness, was suitable for use in autumn and winter, and Examples 4■ and 4■, which had a crisp texture, were suitable for use in spring and summer.

On the other hand, in the comparative examples, Comparative Example 6■ has good sliding properties, while Comparative Example 6■
had a hard texture, and both had problems.

[Effects of the Invention] According to the present invention, it has become possible to provide a composite fiber yarn made of polyester filament yarn and wool that has excellent color development and isochromaticity, as well as excellent texture and physical properties.

[Brief explanation of drawings]

FIGS. 1 to 4 show examples of composite fiber yarns of the present invention made of short fibers mainly consisting of polyester filament yarns and wool. Fig. 1 shows a sheath/core yarn type, Fig. 2 shows a silo filter type, Fig. 3 shows a covering type, and Fig. 4 shows a sheath/core yarn type of polyester blend yarn. In each figure, (a) shows a side view, and (b) shows a cross-sectional view. In the figure, 1: Polyester filament 1' ・Low shrinkage yarn of mixed fiber yarn 2: Short fiber mainly made of wool

Claims (2)

[Claims] (1) Composite fiber yarn consisting of polyester filament yarn and wool, where the polyester has an average molecular weight of 500
~4000 polyethylene glycol is copolymerized with 6.0~10% by weight, dyeable under normal pressure, and has a single yarn strength of 3.0~
6.0 g/d, boiling water shrinkage rate of 3 to 23%, shrinkage stress of 0.3 to 0.9 g/d, and short fibers mainly made of wool with a twist coefficient of 100 to 220. A composite fiber yarn of polyester and wool that is characterized by the following properties: (2) Composite fiber yarn consisting of polyester filament yarn and wool, the polyester having an average molecular weight of 500
~4000 copolymerized with 6.0~10% by weight of polyethylene glycol, dyeable under normal pressure, and the filament yarn is a mixed fiber yarn consisting of low shrinkage yarn and high shrinkage yarn, and is mainly made of wool. Short fibers are heated with a twist coefficient in the range of 100 to 220, and the yarn length difference between low shrinkage yarn and high shrinkage yarn of mixed fiber yarn is 3.
Composite fiber yarn of polyester and wool characterized by ~20%.