JPH1018135A - Polyester-based blended yarn and polyester-based woven and knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polyester-based blended yarn free from stuffy feeling and stickiness, excellent in shape stability, strength-retaining property and comfortability to wearing and suitable for knitted and woven fabrics by blending a specific polyester-based filament yarn with other filament yarn. SOLUTION: This blended yarn is obtained by blending a polyester-based filament yarn having >=1% moisture-absorbing and releasing parameter ΔMR and comprising a fiber containing >=5wt.% copolyester having a copolymerized hydrophilic compound and containing at least either one among a polar group- containing compound and a crosslinking agent or a fiber containing >=5wt.% polyether ester amide or a mixture of polyether ester amide with other thermoplastic resin with other filament yarn. Furthermore, it is preferable to produce a polyester-based woven and knitted fabric having <3kV friction charged voltage according to JIS-L-1094-B method by using the polyester-based blended yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester blended yarn and a polyester knitted fabric, and more particularly, to a polyester blended yarn having a hygroscopic property and a polyester knit having a comfortable wear property due to the hygroscopicity. It relates to textiles.

[0002]

2. Description of the Related Art Polyester fibers are widely used for clothing because of their excellent shape stability, mechanical strength, chemical resistance, heat resistance, and washing durability. However, on the other hand, polyester fibers have a low moisture absorption, so if they are used directly on the skin, or when used for lining worn close to the skin, they cause stuffiness and stickiness due to sweat from the skin, In addition, in dry air, static electricity is likely to occur, and the frictional voltage is high.

[0003] Due to these problems, natural fibers and cellulosic synthetic fibers typified by cupra are often used for lining applications. However, although they enable comfortable wear, they have the disadvantages of lower strength, poorer washing durability, easier wrinkling and poor form stability compared to polyester fibers. As a countermeasure, there is a method in which a hygroscopic resin is applied to the surface of the polyester fiber by post-processing. However, in order to obtain sufficient hygroscopicity by this method, it is necessary to pick up a large amount of hygroscopic resin.Thus, for applications requiring a certain degree of thinness such as lining, a thick coating can be formed. There is a problem that application is difficult because the fabric becomes stiff. In addition, there is also a problem of durability in that the hygroscopic resin on the surface is gradually dropped off by washing, so that the hygroscopicity is reduced.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester-based mixed-yarn which can be worn comfortably with an excellent moisture absorption rate while having excellent morphological stability and strength retention of the polyester fiber. And to provide the knitted fabric.

[0005]

According to the present invention, there is provided a polyester blending process in which a polyester filament having a moisture absorption / desorption parameter ΔMR of 1% or more and another filament are blended. JIS L
It is characterized by a polyester knitted woven fabric having a friction band voltage of less than 3 kv according to -1094 B method.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The polyester blended yarn of the present invention is constituted by blending a polyester filament having a moisture absorption / desorption parameter ΔMR of 1% or more and another filament. The moisture absorption / desorption parameter ΔMR of the polyester filament yarn is more preferably from 1.5 to 10%, particularly preferably from 3 to 10 from the viewpoints of yarn formability, knitting and weaving properties of higher-order processing and comfort during wearing. %.

The moisture absorption / desorption parameter ΔMR in the present invention
Means the moisture absorption MR _{2 at} 30 ° C. × 90% RH
The difference between the moisture absorptivity MR ₁ at ℃ × 65% RH (ΔMR
(%) = MR ₂ −MR ₁ ).
The moisture absorption / desorption parameter ΔMR represents a driving force for obtaining comfort by releasing moisture in the clothes to the outside air when the clothes are worn, and is used when light to medium work or light to medium exercise is performed. Represents the difference in moisture absorption between the temperature inside the clothing represented by 30 ° C. × 90% RH and the outside temperature and humidity represented by 20 ° C. × 65% RH. The larger the moisture absorption / desorption parameter ΔMR, the higher the absorption / desorption output,
It shows that the comfort when worn is good.

As the moisture absorption / desorption parameter ΔMR of the polyester filament yarn, the value of the knitted fabric composed of the mixed fiber yarn containing the polyester filament yarn after washing five times is 70% of the value before washing. It is preferable to have washing durability that is within the range. Here, "one wash" refers to a 0.2% weak alkaline synthetic detergent solution of 40 ± 2 ° C. in a washing tub of a commercially available automatic reversing vortex type electric washing machine.
Put 5 liters, and the total weight of the test cloth and additional cloth is about 50
After adjusting to 0 g, washing 5 minutes, dehydration 30 seconds,
Rinsing 2 minutes, dehydration 30 seconds, rinsing 2 minutes, dehydration 30 seconds. The rinsing is performed by using room temperature water while performing overflow.

In the present invention, the polyester filament yarn having the above-mentioned moisture absorbing performance is not particularly limited, but in consideration of the spinning properties, the weaving properties, the dyeing properties and the durability of the yarn performance, the following are considered. It is preferable to use a filament yarn having a fiber configuration as described above. That is, the first polyester filament yarn is a copolymerized polyester obtained by copolymerizing the hydrophilic compound (A), and the polar polyester-containing compound (B) is added to the copolymerized polyester.
And a conjugate fiber or a blend fiber containing 5% by weight or more of the copolymerized polyester (D) containing at least one of the crosslinking agent (C). The second polyester filament yarn is a composite fiber or a blend fiber containing 5% or more of polyetheresteramide (E) or a mixture of polyetheresteramide and another thermoplastic resin (F).

Hereinafter, each fiber will be described in detail. First, the hydrophilic compound (A) copolymerized with the copolymerized polyester (D) contained in the former fiber is preferably a compound containing at least one ester-forming group, and is not particularly limited. Polyoxyalkylene compounds, polyoxazolines, polyacrylamide and derivatives thereof can be used as typical compounds.
Among them, polyoxyalkylene compounds are preferable,
Polyoxyethylene compounds are more preferred. further,
Among the polyoxyethylene compounds, polyethylene glycol compounds are preferred, and polyethylene glycol containing a crystallization inhibitor is particularly preferred.

Here, the term "crystallinity inhibitor" refers to an organic residue which is present in the molecular chain or at the terminal and which disrupts the symmetry of the repeating unit of polyethylene glycol. Crystallization suppression refers to differential scanning calorimetry (DSC, heating conditions 16
C./min.) Means lower than the melting point of polyethylene glycol having the same molecular weight. The molecular weight of the hydrophilic compound (A) is from 600 to 20 from the viewpoint of compatibility with the polyester and dispersibility in the polyester.
000, more preferably 100
0 to 10,000, more preferably 2,000 to 10,000.
6000. The proportion of copolymerization of the hydrophilic compound (A) is not particularly limited, but is preferably from 40 to 99% by weight based on the total polymer weight from the viewpoint of spinnability.

Most of these compounds are preferably copolymerized in the polyester, but some of them may be present in a dispersed state in the polymer. The polar group-containing compound (B) contained in the copolymerized polyester (D) is not particularly limited, but may be represented by the following general formula (I): Y _i -R ₁ -X _n (I) (where R ₁ is organic residue, X is one selected ester is formed group n is 1 or a positive number, Y _i is an amino group, a sulfonic group, a carboxyl group, a hydroxyl group, among the derivatives such as amide groups and phosphonic acid groups A compound having a polar group represented by the following polar group (i is an integer of 1 or more) is preferable.

The term "containing" as used herein refers to a state of being dispersed or copolymerized in the polyester, and particularly preferably a state of being copolymerized. As the compound, a compound having a sulfonate group is particularly preferable. When the polar group-containing compound (B) is contained, not only the moisture absorption of the polymer is further increased, but also a hydrogen bond or an ionic interaction occurs in the polymer, and when the fiber is used, a change in physical properties over time hardly occurs. The effect is obtained.

From the viewpoint of preventing the occurrence of yarn breakage and making it difficult to cause a change with time, the content of the polar group-containing compound (B) is from 0 to 5 with respect to the acid component constituting the entire polymer.
It is preferably 0 mol%, more preferably 2 to 2 mol%.
15 moles. As the crosslinking agent to be contained in the copolymerized polyester (D) (C), reacts with the polyester, as long as the compound forms a crosslinked structure, is not particularly limited, the following general formula (II) (R ₃ O) _n R ₂ (COOR ₄ ) _m (II) (wherein R ₂ is a trivalent to hexavalent organic residue, R ₃ is hydrogen or an acetyl group, R ₄ is hydrogen or an alkyl group,
3 ≦ m + n ≦ 6. It is preferable to use the polyfunctional compound represented by the formula (1). Here, “containing” refers to a state of being dispersed in the polyester, but a state of having a crosslinked structure by copolymerization is preferable.

As the compound, polyfunctional carboxylic acids such as trimellitic acid and pyromellitic acid, and polyols such as glycerin, trimethylolpropane and pentaerythritol are preferred, and trimellitic acid is particularly preferred. By containing the cross-linking agent (C), not only the hygroscopicity of the polymer is further enhanced, but also a cross-linked structure is formed in the polymer, and the effect of hardly causing a change in physical properties over time when the fiber is used is obtained. .

The proportion of the crosslinking agent (C) is preferably from 0 to 30 mol%, more preferably from 1 to 15 mol%, particularly preferably from 2 to 10 mol%, based on the acid components constituting the whole polymer. By setting the content in such a range, the hygroscopicity is kept high, the spinning property is improved, and the fiber properties such as strength are improved. The polar group-containing compound (B) and the crosslinking agent (C) described above need only contain at least one of the copolymerized polyester (D), and more preferably the polar group-containing compound (B). It is preferable to include both the crosslinking agent (C).

The copolymerized polyester (D) may contain pigments such as titanium oxide and carbon black, surfactants such as alkyl benzene sulfonate, various antioxidants, and coloring within the range not impairing the object of the present invention. Of course, an inhibitor, a light stabilizer, an antistatic agent and the like may be added.
Next, the second fiber containing the above-mentioned polyetheresteramide (E) or a mixture of the polyetheresteramide and another thermoplastic resin (F) will be described.

The polyetheresteramide (E) is
A block copolymer having an ether bond and an ester bond in the same molecular chain. More specifically, one or two or more polyamide-forming components (G) selected from lactams, aminocarboxylic acids, and salts of diamines and dicarboxylic acids, and poly (alkylene oxide) glycols composed of dicarboxylic acids and poly (alkylene oxide) glycols A block copolymer obtained by subjecting the ether ester-forming component (H) to a polycondensation reaction can be preferably used.

As the polyamide-forming component (G) of the polyetheresteramide, lactams, ω-aminocarboxylic acids, nylon salts and the like can be used. These may be used alone or in combination of two or more. Can be. Preferred polyamide-forming components are ε-caprolactam and nylon 66 salt. On the other hand, the polyetherester component (H) constituting the soft segment of the polyetheresteramide is preferably a dicarboxylic acid having 4 to 20 carbon atoms and poly (alkylene oxide) glycol.

The dicarboxylic acids having 4 to 20 carbon atoms include:
Aliphatic, aromatic dicarboxylic acids, alicyclic dicarboxylic acids, and the like can be used, and one kind or a mixture of two or more kinds can be used. Preferred dicarboxylic acids include polyamides such as adipic acid and seba polyglycine, general-purpose thermoplastic resins such as polyester and polyolefin, cinnic acid, decadic acid, terephthalic acid, and isophthalic acid.

As the poly (alkylene oxide) glycol, polyethylene glycol, poly (1,2)
-Propylene oxide) glycol, poly (1,3-propylene oxide) glycol, polytetramethylene oxide glycol, polyhexamethylene oxide glycol, ethylene oxide and propylene oxide or
Random or block copolymerization with tetrahydrofuran can be used, and polyethylene glycol is particularly preferred. The number average molecular weight of the poly (alkylene oxide) glycol is preferably from 300 to 10,000, more preferably from 500 to 4,000.

The polyetheresteramide block copolymer is obtained by polycondensing the above-mentioned polyamide-forming component (G) and polyetherester-forming component (H). Examples of the thermoplastic resin (F) for forming a mixture with polyetheresteramide include, for example,
One or more of polyamides, polyesters, and polyolefins such as nylon 66 and nylon 6 can be used. In particular, nylon 66, nylon 6,
Modified polyethylene terephthalate copolymerized with a sulfonate compound is preferable because it has good compatibility with polyetheresteramide, can be finely dispersed in each other, and has a small swelling due to hot water.

Here, preferred sulfonate compounds as copolymer components of the modified polyester include 5-sodium sulfoisophthalic acid, 5- (tetraalkyl) phosphonium sulfoisophthalic acid and ester derivatives thereof, and sodium p-hydroxyethoxybenzenesulfonate. And potassium 2,5-bis (hydroxyethoxy) benzenesulfonate.

The amount of the sulfonate compound to be copolymerized is preferably 0.1 to 7 based on the compatibility with the polyetheresteramide and the physical properties of the resulting blend fiber.
Mol%, more preferably 0.2 to
It is 6 mol%, more preferably 0.5 to 5 mol%. Polyetheresteramide and thermoplastic resin (F)
The mixing ratio is preferably 5 to 50% by weight from the viewpoint of obtaining sufficient moisture absorption properties and preventing cracking of the fiber surface due to swelling in a hot water atmosphere such as a dyeing process,
More preferably 7 to 45% by weight, even more preferably 10 to 45% by weight.
４０40% by weight.

Fiber formation for use as a composite fiber or blend fiber in combination with the above-mentioned copolymerized polyester (D), polyetheresteramide (E) or a mixture of polyetheresteramide and thermoplastic resin (F) Examples of the reactive polymer include polyolefins such as polyethylene and polypropylene, polyamides such as nylon 6 and nylon 66, and polyesters such as polyethylene terephthalate and polybutylene terephthalate, but are not limited thereto. . Among these, a polyester mainly composed of polyethylene terephthalate, which is highly versatile as a synthetic fiber for clothing, is particularly preferred.

Although there is no particular limitation on the form of the conjugate fiber, a core-sheath type conjugate fiber comprising a core 1 and a sheath 2 as shown in FIG. 1 and a core 1 and a sheath as shown in FIG. Core-sheath type composite hollow fiber composed of a hollow portion 2 and a hollow portion 3, a sea-island type composite fiber composed of an island portion 1a and a sea portion 2a as shown in FIG. 3, and a laminated type composed of laminated portions 1b and 2b as shown in FIG. Composite fibers and the like can be used.

For example, the core-sheath type composite fiber shown in FIG.
In the case of the core-sheath type composite hollow fiber of the above, a hygroscopic polymer such as copolymerized polyester (D), polyetheresteramide (E) or a mixture of polyetheresteramide and another thermoplastic resin (F) is used as a core. And a fiber-forming polymer for the sheath. In this case, the composite ratio (% by weight) is preferably core / sheath = 5/95 to 90/10, more preferably 7/93 to 50/50, and particularly preferably 10/90 to 30/70. The lower limit of the composite ratio of the core is preferably determined for the purpose of imparting sufficient hygroscopicity, and the upper limit is preferably determined from the viewpoint of preventing a decrease in spinnability and physical properties of fibers.

The cross-sectional shape of the core-sheath may be concentric or eccentric, and the fiber cross-sectional shape may be an irregular cross-section such as circular, polygonal, or H-shaped. In the case of the sea-island composite fiber shown in FIG. 3 and the bonded composite fiber shown in FIG. 4, the hygroscopic polymer is used for the island or one of the bonded parts, and the fiber-forming polymer is used for the sea or the other bonded part. I do. The composite ratio of the island portion or one of the bonded portions is preferably 5 to 90% by weight, more preferably 7 to 50% by weight, and particularly preferably 10 to 30% by weight.

The lower limit of the composite ratio is preferably determined for the purpose of imparting sufficient hygroscopicity, and the upper limit is preferably determined from the viewpoint of preventing a decrease in spinnability and fiber properties. In the case of blended fibers, the fiber-forming weight of a hygroscopic polymer such as copolyester (D), polyetheresteramide (E) or a mixture of polyetheresteramide and another thermoplastic resin (F). The compounding ratio with respect to the total amount of the polymer is preferably 5 to 80% by weight, more preferably 5 to 35% by weight, and still more preferably 7 to 30% by weight.
It is.

The lower limit of the mixing ratio is preferably determined for the purpose of imparting sufficient hygroscopicity, and the upper limit of the mixing ratio is preferably determined from the viewpoint of preventing a reduction in spinnability and physical properties of fibers. The fiber-forming polymer may contain a polyolefin, a polyamide, a polyester, a polycarbonate or the like as long as the object of the present invention is not impaired. Further, pigments such as titanium oxide and carbon black, various antioxidants, coloring inhibitors, light stabilizers, antistatic agents and the like are added to the fiber-forming polymer within a range not to impair the purpose of the present invention. Of course you can.

In the present invention, the other filament yarn to be blended with the above-mentioned hygroscopic polyester filament yarn may be a synthetic fiber such as polyester or polyamide, or a semi-synthetic fiber such as rayon or acetate. There may be. As the synthetic fiber, a drawn yarn or an incompletely drawn yarn can be used. These synthetic fibers or semi-synthetic fibers are filament yarns having a finer single-filament size, thicker filament yarns having a smaller single-filament size, lower-shrinkage filament yarns, higher-shrinkage filament yarns, Is possible.

When a filament yarn having a fineness of single yarn is combined with a hygroscopic polyester filament yarn, the feeling of the knitted fabric is softened by, for example, setting the fineness of single yarn to 0.1 to 1 denier. When a filament yarn having a low shrinkage is combined, for example, by setting the shrinkage to 2 to 6%, the knitted fabric is given a feeling of "bulge". Similarly, in the case of a combination with a spontaneously extensible filament yarn, a feeling of "bulge" can be obtained. When combining filament yarns with high shrinkage, for example, by setting the shrinkage to 15 to 25%,
Improves the firmness and waist of the fabric.

In addition, a silky tone gloss and texture can be obtained in combination with a triangular cross section filament yarn, a lightweight and high quality texture can be obtained in combination with a square hollow filament yarn, and a heat-treating effect can be obtained in combination with a cationic dyeable filament yarn. For example, the appearance, feeling or texture can be enhanced. When combined with semi-synthetic fiber filament yarns such as rayon and acetate, these semi-synthetic fibers have poor washing durability, tend to wrinkle, have low form stability, lack firmness and waist texture, etc. The disadvantages can be ameliorated by polyester-based filament yarns. Further, since the polyester filament yarn has a moisture absorption / desorption parameter ΔMR of 1% or more, the moisture absorption performance can be extremely increased.

[0034] The yarn form of the mixed fiber yarn may be such that one of the polyester filament yarn and the other filament yarn is arranged on the core yarn side and the other is on the sheath yarn side, or It may be in any state where both yarns are aligned. Further, the polyester filament yarn and the other filament yarn preferably have an entangled portion formed by air treatment or the like. The entangled portion may have an intermittent entangled portion in the longitudinal direction of the mixed fiber, or may have a continuous entangled portion. As the entangled part, besides the air-treated mixed fiber form, even if it is made of nene yarn,
Although it may be a simple alignment, an air-processed material is preferable from the viewpoint of process passability and fiber mixing processing cost.

In the case of mixed fiber yarns which require a high quality, high class feeling and special texture, a moisture-absorbing polyester filament yarn is arranged on the core yarn side and another yarn forming a feeling on the sheath yarn side. It is preferable to arrange the filament yarns concentrically or to provide a difference in the yarn length between the core yarn and the sheath yarn so that the core yarn is combined with the sheath yarn by 5 to 40% shorter.

FIG. 5 shows an example of the yarn form of the mixed fiber processed yarn according to the present invention. FIG. 5 (A) shows a hygroscopic polyester filament yarn a and another filament yarn b.
Indicates the yarn form of the mixed fiber processed by intermittent entanglement,
The yarn has a partially entangled portion E in the longitudinal direction of the yarn. FIG.
(B) shows a yarn form of a blended yarn obtained by continuous entanglement in which the moisture-absorbent polyester filament yarn a and another filament yarn b are continuously entangled with a sheath or loop in the core portion. It has been done.

The method for producing the mixed fiber is not particularly limited, but a typical example is shown in FIG. FIG.
(A) shows a step of producing a mixed fiber by intermittent entanglement. The polyester filament yarn a and the other filament yarn b are supplied from the supply rollers 21 and 22 to the entanglement nozzle 23, where the yarns are intermittently entangled.

Next, it is pulled out by the take-off roller 24,
The yarn is wound into the wound cheese 25 as a mixed fiber processing yarn.
In such an intermittent entanglement treatment, in order to provide a heat shrinkage difference between the filament yarns a and b, one of the filament yarns may be subjected to a relaxation heat treatment before being supplied to the entanglement nozzle 23. FIG. 6 (B) shows a step of producing a mixed fiber yarn by continuous entanglement processing. This is a process called “taslan” processing. The polyester filament yarn a and the other filament yarn b are supplied from the supply rollers 31 and 32 to the turbulent nozzle 33 (“Taslan”).
Nozzle) and is subjected to a continuous entanglement process in a turbulent region in the turbulent nozzle 33 in a relaxed state.

Next, it is pulled out by the take-off roller 34,
The yarn is wound into the wound cheese 35 as a mixed fiber processing yarn.
In addition, after being pulled out from the take-off roller 34, heat setting may be performed to adjust the degree of formation of a loop or a slack. The polyester-based mixed-processed yarn of the present invention obtained as described above is processed into a woven or knitted fabric. However, since the mixed-processed yarn is composed of a polyester-based filament yarn having a moisture absorption / release parameter ΔMR of 1% or more. JIS L-1094 of the polyester knitted fabric
The frictional band voltage according to the method B can be less than 3 kv. It is preferably less than 1 kv, more preferably substantially 0 kv. Further, the moisture absorption / desorption parameter ΔMR as a knitted fabric can be set to 1% or more.

As in the case of the above-mentioned moisture absorption / desorption parameter ΔMR, the value of the friction band voltage after washing 5 times is 3 kv
It is preferable to have durability to maintain the value of less than 1, more preferably less than 1 kv. Here, one wash is
The meaning is the same as that described in the polyester filament yarn described above. Such durability is achieved by using a composite fiber or blend fiber containing 5% by weight or more of the above-mentioned copolymerized polyester (D), polyetheresteramide (E) or a mixture of polyetheresteramide and thermoplastic resin (F). It becomes possible by using it.

The polyester knitted fabric according to the present invention is:
The structure in the case of a woven fabric can be used without any particular limitation as long as it is a commonly used structure such as a flat structure, a twill structure, a satin structure and a change structure thereof. The structure at the time of dyeing the knitted fabric has no problem in the normal processing steps of relaxing refining-intermediate set-dyeing-functionality imparting processing-finishing set. There is no problem.

The processing for imparting functionality is not particularly limited, as long as the texture of the fabric is kept soft and the object of the present invention is not impaired, such as antistatic, deodorizing, water repellent, antifouling and antifungal processing. Not something. In addition, it is more preferable to impart the functionality of the moisture absorption processing, because the moisture absorption rate of the fabric is improved and the comfort at the time of wearing is improved. The above-mentioned polyether knitted fabric according to the present invention is suitable as a fabric for use in thin fabrics, and can be particularly preferably used as a lining such as a bottom back, a sleeve back, a pocket back, an upper back, and a school back.

[0043]

EXAMPLES Each evaluation characteristic used in the examples described below is obtained by the following measuring method. [Moisture absorption / desorption parameter ΔMR] 1-3 g of original yarn or cloth
Was used, the weight W _O and 20 ° C. × weight W ₁ of 24 hour after standing in the commercial thermo-hygrostat in an atmosphere of 65% RH and 30 ℃ × 90% RH, W 2 at absolute dry From the weight change,
From the following equation, the moisture absorption MR ₁ at 20 ° C. × 65% RH and 30 ° C.
Calculate the moisture absorption MR ₂ at × 90% RH.

MR ₁ (%) = [(W ₁ −W _O ) / W _O ] × 100 MR ₂ (%) = [(W ₂ −W _O ) / W _O ] × 100 Then, the above-mentioned moisture absorption rate MR ₁ , from MR _2, to calculate the moisture parameters ΔMR by the following equation. ΔMR (%) = MR ₂ −MR ₁ [Strength] Using a commercially available Tensilon tensile tester, a value was determined from a stress-strain curve measured under the conditions of a test length of 20 cm and a tensile speed of 10 cm / min. [Comfort when wearing and clinging] Sensory test of subjects after sewing each fabric on a skirt using the lining as a lining and performing a light exercise at a speed of 8 km / h for 15 minutes in a constant temperature and humidity room at 30 ° C x 65%. Was evaluated for comfort. In addition, the presence or absence of cling to the legs of the skirt was examined. The results of the comfort evaluation were indicated as discomfort: ×, slightly comfortable: Δ, comfortable: 、, and very comfortable: ◎.

Example 1 194 parts of dimethyl terephthalic acid, ethylene glycol 1
35 parts, dimethyl 5-sodium sulfoisophthalate 2
After adding 6.6 parts, 7.5 parts of trimethyl trimellitate and 0.1 part of tetrabutyl titanate and performing a transesterification reaction, 328 parts of polyethylene glycol having a molecular weight of 4000 was added, and polymerization was performed to produce a copolymerized polyester. did.

Using the obtained copolymerized polyester as a core component and polyethylene terephthalate as a sheath component, 50 denier and 18 filaments of a concentric core-sheath type composite fiber in which the copolymerized polyester accounts for 20% by weight of the total weight of the fiber. Polyester filament yarn and 75 denier,
Each of 36 polyester filament yarns was produced. The moisture absorption / desorption parameter ΔMR of these polyester filament yarns was 4.5%.

The 50-denier, 18-filament polyester filament yarn and the 30-denier, 72-filament normal polyester filament yarn were aligned, and the air entangling treatment pressure was 4 kg / cm ² , the treatment speed was 300 m / min, and the treatment was carried out. Air entanglement was performed at an overfeed rate of + 2% to produce a mixed fiber yarn. 80 above
Using a (50/30) denier, 90 (18/72) filament blended processed yarn as a warp and the above-mentioned 75 denier, 36 filament polyester filament yarn as a weft, the finish density is 91 / inch; A thin horizontal woven fabric having a weft density of 80 yarns / inch was produced.

The strength of the blended yarn of the warp used for the woven fabric was 5.1 g / d, and the strength of the weft was 4.3 g / d. Also, the tear strength of the obtained woven fabric is 100
0g, 1850g in the weft direction, and the seam shift was 1.
1 mm, weft direction 1.1 mm, moisture absorption / desorption parameter ΔMR
Was 3.5%, the moisture absorption / desorption parameter ΔMR after 5 washes was 3.3%, the frictional charge was 0.1 kv, and the frictional charge after 5 washes was 0.3 kv.

In the comfort test, it was very comfortable (（).
No clinging of the skirt to the legs was observed. Further, the comfort test after washing five times was also very comfortable (◎), and no cling to the legs of the skirt was observed. Table 1 shows the evaluation results.

[0050]

[Table 1]

Examples 2 to 3 In Example 1, 10% by weight (Example 2) of a hygroscopic polymer (copolymerized polyester) was added to
A polyester-based filament yarn of conjugate fiber was produced in the same manner as in Example 1 except that the ratio was changed to the percentage by weight (Example 3). The moisture absorption / desorption parameter ΔMR of the former polyester filament yarn is 2.1%, and the latter is 1.5%.
Met.

These polyester filament yarns were used as mixed fiber yarns in the same manner as in Example 1, and the same evaluation as in Example 1 was performed. Table 1 also shows the evaluation results. Comparative Example 1 The same procedure as in Example 1 was carried out except that the moisture-absorbing polymer (copolyester) was changed to a ratio of 3% by weight based on the total weight of the fibers. The moisture absorption / desorption parameter ΔMR is 0.8
%), And this was made into a mixed fiber yarn similar to that in Example 1, and the same evaluation as in Example 1 was performed.

Table 1 shows the evaluation results. Comparative Example 2 A normal multifilament yarn of 100% polyester was used, and only the multifilament yarn (moisture absorption / desorption parameter ΔMR was 0%) was woven into a fabric having the same structure as in Example 1. The same evaluation was performed.

Table 1 shows the evaluation results. Comparative Example 3 A multi-filament yarn of normal polyester 100% (moisture absorption / desorption parameter ΔMR is 0%) was used, and a woven fabric obtained in the same manner as in Example 1 using only the multi-filament yarn was subjected to antistatic processing. Example 1 using this fabric
The same evaluation was performed.

Table 1 shows the evaluation results. Example 4 340 parts of ε-caprolactam, 18 parts of terephthalic acid, polyethylene glycol 100 having a number average molecular weight of 1000
The polyetheresteramide block copolymer having a ratio of 6 components of nylon of 45% by weight was produced by charging the parts into a polymerization reaction vessel and performing a polymerization reaction.

70 parts by weight of the obtained polyetheresteramide block copolymer and 30 parts by weight of 5-sodium are blended in a chip state to form a core component, polyethylene terephthalate is used as a sheath component, and the core component is 20 parts by weight of the whole fiber. 50 denier comprising a concentric core-sheath composite fiber in
Polyester filament yarns of 18 filaments, 75 deniers and 36 filaments were respectively produced. The moisture absorption / desorption parameter ΔMR of these polyester filament yarns was 2.3%.

The 50-denier, 18-filament polyester filament yarn and the ordinary 30-denier, 72-filament polyester filament yarn were aligned, and the air entanglement treatment pressure was 4 kg / cm ² , the treatment speed was 3000 m / min, Processing overfeed rate + 2
%, Air-entangled processing was performed to produce a mixed fiber processed yarn. The above 80 (50/30) denier, 90 (18/72) filament blended processed yarn is used as the warp, and the above 75 denier,
Using a 36-filament polyester filament yarn as the weft, a thin horizontal woven fabric having a finish warp density of 90 yarns / inch and a weft density of 81 yarns / inch was produced.

The strength of the blended yarn of the warp used for the woven fabric was 4.7 g / d, and the strength of the weft was 4.0 g / d. Also, the tear strength of the obtained woven fabric was 900 in the warp direction.
g, the weft direction is 1250 g, and the seam shift is 1.2 in the vertical direction.
mm, weft direction 1.2 mm, moisture absorption / desorption parameter ΔMR is 2.5%, moisture absorption / desorption parameter ΔMR after 5 washes is 2.3%, friction band voltage is 0.2 kv, and after 5 washes The friction band voltage was 0.3 kv. In the comfort test, it was very comfortable (◎), and no cling to the legs of the skirt was observed. Further, the comfort test after washing five times was also very comfortable (◎), and no cling to the legs of the skirt was observed.

[0059]

As described above, according to the polyester blended yarn and knitted fabric according to the present invention, the polyester fiber has excellent morphological stability and strength retention while maintaining excellent shape stability.
By having a high moisture absorption rate, stuffiness and stickiness do not occur, and since the frictional voltage is low, it is possible to prevent clinging to the skin when worn, and to obtain excellent wearing comfort.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically showing a core-sheath type composite fiber used in the present invention.

FIG. 2 is a cross-sectional view schematically showing a core-sheath hollow composite fiber used in the present invention.

FIG. 3 is a cross-sectional view schematically showing a sea-island composite fiber used in the present invention.

FIG. 4 is a cross-sectional view schematically showing a laminated conjugate fiber used in the present invention.

FIGS. 5A and 5B are side views each exemplifying a polyester blended yarn of the present invention.

FIGS. 6A and 6B are process schematic diagrams illustrating the method for producing a polyester-based mixed-processed yarn of the present invention, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Core part 2 Sheath part 1a Island part 2a Sea part 1b, 2b Lamination part 3 Hollow part

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location D01F 6/90 311 D01F 6/90 311A 8/14 8/14 C

Claims (5)

[Claims] 1. A polyester blended yarn obtained by blending a polyester filament yarn having a moisture absorption / release parameter ΔMR of 1% or more with another filament yarn. 2. A polyester blended yarn in which a polyester filament yarn having a moisture absorption / desorption parameter ΔMR of 1% or more and another filament yarn are blended, and according to JIS L-1094B method. A polyester knitted woven fabric having a friction band voltage of less than 3 kv. 3. Moisture absorption / desorption parameter ΔM as knitted fabric
The polyester knitted fabric according to claim 2, wherein R is 1% or more. 4. The polyester filament yarn comprises a fiber which copolymerizes a hydrophilic compound and contains at least 5% by weight of a copolymerized polyester containing at least one of a polar group-containing compound and a crosslinking agent. The polyester knitted fabric according to claim 2 or 3. 5. The polyester filament yarn contains 5% by weight of polyetheresteramide or a mixture of polyetheresteramide and another thermoplastic resin.
The polyester knitted woven fabric according to claim 2, comprising a fiber containing the above.