JPH108347A - Polyester suit of working clothes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject working clothes having excellent shape stability, wearing comfortableness, etc., and suitable for the use in a clean room, etc., by using woven fabric having specific physical properties and containing polyester filament yarn having a specific moisture absorption-desorption parameter. SOLUTION: This working clothes are composed of woven fabric containing polyester filament yarn such as a conjugate fiber or blended fiber having a moisture adsorption-desorption parameter ΔMR of >=1% and containing >=5wt.% of a polyether ester amide or a mixture of a polyether ester amide and other thermoplastic resin. The woven fabric has a ΔMR of >=1%, a frictional electrification voltage of <3kv measured in conformity to JIS L 1094 B, a dust generation of 20-100 particles/ft<3> .100cm<3> and a tear strength of 1,500-6,000g. Preferably, the weaving densities of the warp and the weft of the woven fabric are 50-180/inch each, the single fiber fineness of one of the warp and weft is 0.1-10de, the total denier is 75-300de and the yarn strength is >=3.5g/d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester workwear, and more particularly, to a polyester workwear, which has a low level of dust generation and absorption and scattering, has excellent use comfort due to its hygroscopicity, and is worn in a clean room or the like. The present invention relates to a polyester workwear suitable for performing the above.

[0002]

2. Description of the Related Art In recent years, with the progress of the electronics industry and medical care, fine dust and static electricity at manufacturing sites and medical sites have become obstacles. As part of these efforts, the development of work clothes that can be used in clean environments is also being promoted.

For example, in the manufacture of ICs and LSIs in the electronics industry, it is necessary to make the manufacturing site a clean room with a high degree of cleanliness in proportion to the increase in the degree of integration. Accordingly, in order to maintain cleanliness around the clean room, work clothes worn around the clean room are required to have low dust generation and high antistatic properties. In medical practice,
Dust from various pathogens adheres to clothes and is transported.
Spreading and scattering are thought to be one of the routes of hospital infection, and clean rooms such as operating rooms and intensive care units are being promoted. Accordingly, there has been a demand for the development of working clothes such as surgical gowns, white coats, and nursing care clothes that can cope with these.

[0004] In general, polyester fibers are mainly used for work clothes because they are excellent in form stability, mechanical strength, chemical resistance, heat resistance, washing durability and the like.
However, polyester fibers have a low moisture absorption, so when worn as work clothes for a long time, sweating tends to cause discomfort such as stuffiness and stickiness, and it is easy to be charged with static electricity, so that dust in the air may also be absorbed. However, there has been a problem that discomfort due to the discharge impact and troubles to electronic products are likely to occur.

[0005] As a countermeasure for solving this drawback, a blended yarn of polyester fiber and cotton is often used. But,
Although spun yarn made of cotton has moisture absorption properties, it can eliminate stuffiness and stickiness due to sweating, but has a drawback that fluff is peculiar to the spun yarn. In addition, from the viewpoint of suppressing dust generation by the spun yarn and imparting hygroscopicity, the use of cellulosic synthetic long fibers represented by cupra has also been performed, but the strength is lower than that of polyester fibers, Since washing durability is inferior, there is a drawback that fluff is generated by wear due to repeated wearing and washing.

[0006] There is also a method of imparting hygroscopicity in the post-processing stage of the fiber. However, in order to obtain sufficient hygroscopicity by this method, it is necessary to attach a large amount of hygroscopic resin, so that the fabric becomes stiff and there is a drawback that the exercise performance of work clothes is reduced. In addition, since work clothes are frequently washed, there is also a problem that it is difficult to maintain hygroscopicity due to resin falling, and the dropped resin becomes dust.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyester filament yarn having high moisture absorption, antistatic properties and low dust generation while maintaining the morphological stability and strength retention properties of polyester filament yarn. It is an object of the present invention to provide a polyester workwear that can provide comfortable and comfortable wearing feeling and can cope with a clean environment.

[0008]

The polyester workwear of the present invention for solving the above-mentioned problems has a moisture absorption / desorption parameter ΔMR.
Is a woven fabric containing a polyester-based filament yarn having a moisture absorption / desorption parameter ΔMR of 1% or more.
Is 1% or more, frictional band voltage according to JIS L 1094 B method is less than ³ kv, and dust generation amount is 20 to 100 particles / ft ^3.
It is characterized by 100 cm ² and tear strength of 1500-6000 g.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The polyester workwear of the present invention
It is made of a woven fabric composed of polyester filament yarns having a moisture absorption / desorption parameter ΔMR of 1% or more, and is preferably made of a woven fabric of 100% polyester filament yarns. By being composed of such a polyester filament yarn, the moisture absorption / desorption parameter ΔMR as a woven fabric is 1% or more and JIS L 10
Friction band voltage is 3k by 94B method (friction band voltage measurement method)
less than v.

[0010] With the structure of such a polyester filament yarn, it is possible to maintain low dust generation, enable excellent wearing comfort due to moisture absorption, and sufficiently cope with a clean environment as work clothes. I do. Here, the clean environment means that dust in the air is 0.5 per ft ^3.
It is a level that can cope with an environment of 10,000 to 100,000 particles of μm or more. Moisture absorption / desorption parameter ΔMR is 1
%, The moisture absorption rate is low, causing stuffiness and stickiness due to perspiration from the skin, making it difficult to prevent discomfort during wearing. On the other hand, if the friction band voltage exceeds 3 kv, it becomes difficult to prevent dust from adhering to the air due to static electricity.

Further, in the present invention, the moisture absorption / desorption parameter ΔMR as the cloth is determined based on the comfort, antistatic property,
From the viewpoint of weavability, 1.5 to 10% is preferable, and 3 to 10% is more preferable. Further, it is preferable that the lower limit of the friction band voltage is substantially 0 kv. In the present invention, it is preferable that the moisture absorption / desorption parameter ΔMR as the clothing material has a value after washing five times within 70% of that before washing, with respect to the washing durability.

[0012] Here, one wash means that 25 liters of a 0.2% weak alkaline synthetic detergent solution of 40 ± 2 ° C is put into a washing tub of a commercially available automatic reversing vortex-type electric washing machine, and a test cloth and an additional cloth are added. After adjusting the total weight to be about 500g,
Laundry 5 minutes, dehydration 30 seconds, rinsing 2 minutes, dehydration 30 seconds, rinsing 2 minutes, dehydration 30 seconds. In addition, rinsing is performed while overflowing using room temperature water.

The moisture absorption / desorption parameter ΔMR in the present invention
Means the moisture absorption MR _{2 at} 30 × 90% RH and 20 ° C.
The difference between the moisture absorptivity MR ₁ at × 65% RH (ΔMR
(%) = MR ₂ −MR ₁ ).
The moisture absorption / desorption parameter ΔMR is a driving force parameter for obtaining comfort by releasing moisture in the clothes when the clothes are worn to the outside air. It represents the difference in moisture absorption between the temperature in the clothes represented by ° C × 90% RH and the outside temperature and humidity represented by 20 ° C. × 65% RH. The larger the moisture absorption / desorption parameter ΔMR is, the higher the moisture absorption / desorption power is, indicating that the comfort during wearing is good.

In the present invention, the polyester filament yarn having the above-mentioned moisture absorption / desorption parameter ΔMR of 1% or more is not particularly limited, but the yarn-forming property, weaving property, dyeing property and durability of yarn performance are not limited. From the viewpoint of the above, it is preferable to use the following fibers. One is a copolymerized polyester obtained by copolymerizing a hydrophilic compound (A), wherein the copolymerized polyester contains at least one of a polar group-containing compound (B) and a crosslinking agent (C). A composite fiber or a blend fiber containing 5% by weight or more of the polyester (D), and another one is a polyetheresteramide (E) or a mixture of the polyetheresteramide and another thermoplastic resin (F). The purpose is to use a composite fiber or a blend fiber containing 5% by weight or more of the mixture.

Hereinafter, each fiber will be described in detail. First, the former fiber containing the copolyester (D) will be described.
In the above, the hydrophilic compound (A) is preferably a compound containing at least one ester-forming group, and is not particularly limited, but typical compounds include polyoxyalkylene compounds, polyoxazolines, polyacrylamides and the like. Derivatives and the like can be used. Among them, polyoxyalkylene compounds are preferable, and polyoxyethylene compounds are more preferable. Further, among the polyoxyethylene compounds, a polyethylene glycol compound is preferable, and a polyethylene glycol containing a crystallization inhibitor is particularly preferable.

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 scanning chain scanning analysis (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.

It is preferable that most of these compounds are copolymerized in the polyester, but some of them may be present in a dispersed state in the polymer. Next, 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) In the formula, R ₁ is an organic residue, X is an ester-forming group, n is a positive number of 1 or more, and Y _i is an amino group, a sulfone group, a carboxyl group, a hydroxyl group, an amide group and a phosphonic acid group. A compound having a polar group represented by one or more selected polar groups (i is an integer of 1 or more) is preferable.

Here, the term "containing" means 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. The inclusion of the polar group-containing compound (B) not only increases the moisture absorption of the polymer, but also causes a hydrogen bond or an ionic interaction in the polymer, resulting in a change in physical properties over time when used as a fiber. The effect of being difficult is obtained.

The content of the polar group-containing compound (B) is from 0 to 5 with respect to the acid component constituting the entire polymer, from the viewpoint of preventing the occurrence of thread breakage and making the change with time difficult to occur.
It is preferably 0% by mole, more preferably 2 to 1%.
5 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" means 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 preferable, and trimellitic acid is particularly preferable. 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.
Mol%. When the content is in such a range, it is preferable because the moisture absorption is kept high, the yarn forming property is improved, and the fiber properties such as strength are improved. Copolyester (D)
The above-mentioned polar group-containing compound (B) and a crosslinking agent (C)
At least one of the polar group-containing compound (B) and the polar group-containing compound (B) and the crosslinking agent (C).

The copolymerized polyester (D) may further contain a pigment such as titanium oxide or carbon black, a surfactant such as an alkylbenzene sulfonate, various antioxidants, and a coloring agent, as long as the object of the present invention is not impaired. Of course, an inhibitor, a light stabilizer, an antistatic agent and the like may be added.
Next, a fiber containing the latter 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 acid having 4 to 20 carbon atoms includes
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 polyetherester amide block copolymer is obtained by polycondensing the above-mentioned polyamide-forming component (G) and polyetherester-forming component (H). As the thermoplastic resin (F) to be mixed with the polyetheresteramide, for example, nylon 6
6, one or more of polyamides such as nylon 6, polyesters, and polyolefins. In particular, nylon 66, nylon 6, modified polyethylene terephthalate copolymerized with a sulfonate compound and the like have good compatibility with polyetheresteramide,
It is preferable because they can be finely dispersed with each other and have a small swelling due to hot water.

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 copolymerization amount of the sulfonate compound is 0.1 to 0.1 with respect to the acid component in consideration of the compatibility with the polyetheresteramide and the physical properties of the resulting blend fiber.
It is preferably 7 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 from 5 to 50% by weight, more preferably from 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. It is 7 to 45% by weight, more preferably 10 to 40% by weight.

In the present invention, a conjugate fiber or blend containing the above-mentioned co-polyester (D), polyetheresteramide (E), or a mixture of polyetheresteramide and thermoplastic resin (F), which is a hygroscopic component. As a fiber-forming polymer used in combination to produce fibers,
Polyolefins such as polyethylene and polypropylene,
Polyamides such as nylon 6 and nylon 66 and polyesters such as polyethylene terephthalate and polybutylene terephthalate can be used, but are not limited thereto. It is preferable to use a polyester mainly composed of polyethylene terephthalate, which is the most versatile synthetic fiber for clothing.

Although there is no particular limitation on the form of the conjugate fiber, a core-sheath type conjugate fiber composed of a core 1 and a sheath 2 as shown in FIG. 1 and a core 1 and a sheath 2 as shown in FIG. Hollow part 3
Core-in-sheath composite hollow fiber consisting of: island part 1 as shown in FIG.
A sea-island composite fiber composed of a and a sea part 2a, a laminated composite fiber composed of bonded parts 1b and 2b as shown in FIG. 4 can be used.

For example, the core-in-sheath composite fiber shown in FIG.
In the case of the core-sheath composite hollow fiber of the above, the core portion has a hygroscopic property such as a copolymerized polyester (D), polyetheresteramide (E) or a mixture of polyetheresteramide and another thermoplastic resin (F). Using a polymer, a fiber-forming polymer can be used for the sheath. The core-sheath cross-sectional shape may be concentric or eccentric, and the fiber shape may be a circular, polygonal, H-shaped or other irregular cross-section.

In this case, the composite ratio (% by weight) is as follows: core / sheath =
5/95 to 90/10 is preferable, and 7 is more preferable.
/ 93-50 / 50, particularly preferably 10 / 90-30
/ 70. The lower limit of the composite ratio of the core is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit can be appropriately set from the viewpoint of preventing a decrease in spinnability and a decrease in fiber properties.

In the case of the sea-island composite fiber shown in FIG. 3 and the bonded composite fiber shown in FIG. 4, the copolymer polyester (D), the polyetheresteramide (E) or the polyetheresteramide is added to the island portion or the bonded portion. And a thermoplastic resin (F), etc., and a fiber-forming polymer can be used for the sea portion or the other bonded portion.

The composite ratio of the island portion or one of the bonded portions to the fiber-forming polymer is preferably 5 to 90% by weight. It is more preferably from 7 to 50% by weight, particularly preferably from 10 to 30% by weight. The lower limit of the composite ratio of the island portion or one of the bonded portions is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit is appropriately set from the viewpoint of preventing a decrease in spinnability and fiber properties.

In the case of a blended fiber, moisture absorption such as a copolyester (D), a polyetheresteramide (E) or a mixture of a polyetheresteramide and another thermoplastic resin (F) with the fiber-forming polymer is used. The mixing ratio of the hydrophilic polymer is preferably from 5 to 80% by weight, more preferably from 5 to 35% by weight, and still more preferably from 7 to 30% by weight, based on the total amount of the polymer.

The lower limit of the mixing ratio is appropriately set for the purpose of imparting sufficient hygroscopicity, and the upper limit of the mixing ratio is appropriately set from the viewpoint of preventing a decrease in spinnability and fiber properties. 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.

The working clothes of the present invention are composed of the above-described woven fabric of the hygroscopic polyester-based filament yarn, and the woven fabric has a normal structure such as a flat structure, a twill structure, a satin structure and a change structure thereof. There is no particular limitation as long as the organization is used. The dyeing process of the above-mentioned woven fabric has no problem in the normal processing process of relaxing refining-intermediate set-dyeing-functionality imparting-finishing set. The alkali treatment of the polyester fabric is not preferable because the fiber surface may be roughened by hydrolysis and the amount of dust generated may increase.

The processing for imparting functionality to the woven fabric may be performed in such a range as not to impair the object of the present invention, such as antistatic, deodorizing, water repellent, antifouling, and antifungal processing, while keeping the texture of the fabric soft. It is not limited at all. The woven fabric constituting the work clothes has a woven density of the warp and the weft composed of the above-mentioned polyester filament yarns of 5 respectively.
It is preferably from 0 to 180 lines / inch. Further, the polyester filament yarn used for the warp and the weft has at least any of a single yarn fineness of 0.1 to 10 denier, a total fineness of 75 to 300 denier, and a yarn strength of 3.5.
It is preferably at least g / d. Also, this fabric is
The tear strength measured by the JIS L 1096 D method (pendulum method) is 1500 to 6000 g, preferably 3000 to 6000 g, and the amount of dust generation is 20 to 100.
Pcs / ft ³ · 100 cm ² .

The weaving density of the warp and the weft of the woven fabric is 50 /
If it is less than inches, there is a tendency that seam misalignment or misalignment during wearing tends to occur. On the other hand, when the weaving density of the warp and the weft exceeds 180 yarns / inch, the work clothes become thick and coarse, and the lightweight feel tends to be impaired. Further, the single yarn fineness of at least one of the warp and the weft is 1
If the thickness is greater than 0 denier, the texture of the fabric becomes hard, and it becomes difficult to use the fabric as work clothing. On the other hand, if it is less than 0.1 denier, the spinning property tends to decrease. The single yarn fineness is more preferably 0.5 denier or more from the viewpoint of the weaving property and the strength of the work clothes.

As the warp and / or weft, mixed yarns of different fineness filament yarns having different single yarn finenesses may be used, which is preferable from the viewpoint of producing soft and tight work clothes. In this case, when a hygroscopic polyester-based filament yarn is used as the filament yarn having a large fineness, it is possible to produce a soft and tight work clothing material having a high moisture absorption rate.

When the total fineness of at least one of the warp and the weft is less than 75 denier, there is a tendency that the work cloth is thin without any glue. The total fineness is 3
If the denier is larger than 00 denier, the fabric becomes thicker, and the texture of the fabric becomes harder, making it difficult to use the fabric as work clothes. Further, the strength of at least one of the warp and the weft is less than 3.5 g / denier,
If the tear strength of the woven fabric is less than 1500 g, the strength of the work clothing cannot be maintained.

The polyester fabric constituting the work clothes of the present invention has a dust generation amount of 20 to 100 pieces / ft ³ · 100 cm ² . A large amount of dust pollutes a clean environment such as a clean room, and causes a decrease in productivity in the electronics industry. For environmental dust 1 ft ³ per 0.5μm or more of the particles following 100,000 in the air, dust generation is 100 to 80 pieces / ft ³ · 100
cm ² is preferable, and more preferably 80 to 50 particles / ft ³
・ It is preferably 100 cm ² .

Here, the amount of dust is defined as 1 ft ³ of dust in the air.
In a clean room in which 10 particles or more per particle are 0.1 μm or more, in accordance with the conditions defined in the shaking method of JIS B9923 light scattering type particle counter method, the number of rotations is 50 rpm, the rotation angle is 400 °, and the vertical movement is 14.5c.
m, using a testing machine having a sample holder with a sample size of 31 × 23 cm and operating time of 5 minutes according to JIS B9
921 by a light scattering particle counter.
Counted for 5μm or more particles, 1ft ³ · 100cm
Calculate the number of particles per ² .

It should be noted that the test cloth is preliminarily exposed to dust in the air.
Using a dry cleaning machine attached to a clean room where 10 or less particles of 0.1 μm or more per ft ³ are used, 10 minutes of fresh liquid washing, 10 minutes of new liquid washing, 10 minutes of new liquid washing, using park-roll ethylene liquid collected by distillation. A liquid that has been treated once under dry cleaning conditions of 10 minutes for draining and drying is used.

[0046]

[Embodiments] Each evaluation used in the embodiments described below was obtained by the following measuring method. [Hygroscopic parameter ΔMR] Yarn or cloth 1-3
g and the weights W ₁ and W ₂ after standing for 24 hours in a commercially available thermo-hygrostat in an atmosphere of 20 ° C. × 65% RH and 30 ° C. × 90% RH, respectively. Then, the moisture absorption rate MR ₁ at 20 ° C. × 65% RH is calculated by the following equation.
And the moisture absorption rate MR ₂ at 30 ° C. × 90% RH are calculated.

MR ₁ (%) = [(W ₁ −Wo) / Wo] × 100 MR ₂ (%) = [(W ₂ −Wo) / Wo] × 100 Then, from the above moisture absorption rates MR ₁ and MR ₂ The hygroscopic parameter ΔMR was calculated by the following equation. ΔMR (%) = MR ₂ −MR ₁ [Strength] Using a commercially available Tensilon tensile tester, sample 2
The value was determined from a stress-strain curve tested under the conditions of 0 cm and a tensile speed of 10 cm / min. [Comfort during wear] A skirt for work clothes was sewn from each fabric, and the speed was 8 k / h in a constant temperature and humidity room at 30 ° C x 65%.
After 15 minutes of light exercise, comfort was evaluated by a sensory test of the subject. The evaluation results are shown 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 copolyester as a core component and polyethylene terephthalate as a sheath component, the copolyester accounts for 20% by weight of the total weight of the fiber.
A 0 denier, 48 filament concentric core-sheath composite fiber multifilament yarn was obtained. This multifilament yarn was subjected to normal false twisting to give a false twisted yarn having a yarn strength of 3.7 g / d. The moisture absorption / desorption parameter ΔMR of this false twisted yarn
Was 3.4%. The above 150 denier, 48 filament false twisted yarn is used for the warp with one half for the warp and two for the weft, the fabric structure is 2/2 twill, the warp density is 99 / inch, and the weft density is 56 / inch. Weaved. The greige was finished by a usual dyeing method to obtain a woven fabric having a finishing density of 118 yarns / inch and a weft density of 66 yarns / inch.

The tear strength of the obtained woven fabric is 3000 g or more in both the longitudinal and lateral directions, the moisture absorption / desorption parameter ΔMR is 3.4%, the moisture absorption / desorption parameter ΔMR after washing five times is 3.3%, the friction band The voltage is 0.1 kv and the amount of dust is 9
5 pieces / ft ³ · 100 cm ² . The comfort test was very comfortable (◎), and the comfort test after washing 5 times was also very comfortable (◎). Table 1 shows the evaluation results.

[0051]

[Table 1]

Example 2 A 150-denier, 48-filament conjugate fiber was produced in the same manner as in Example 1 except that the ratio of the hygroscopic copolyester to the core was 10% by weight based on the total weight of the fiber. The same false twisting as in Example 1 was performed to obtain a yarn having a yarn strength of 3.7 g / d. The moisture absorption / desorption parameter ΔMR of the false twisted yarn was 1.8%.

One of the 150-denier 48-filament false twisted yarn is used together with the warp front and back yarns and two weft yarns. The warp has a warp density of 128 yarns / inch and a weft density of 5 yarns, three warp yarns and one back yarn.
Four / inch greige fabrics were made. This greige was dyed in the same manner as in Example 1 to obtain a woven fabric having a finish warp density of 156 yarns / inch and a weft density of 64 yarns / inch. Table 1 shows the results of the same evaluation as in Example 1.

Example 3 A composite fiber multifilament of 150 denier and 48 filaments was prepared in the same manner as in Example 1 except that the ratio of the hygroscopic copolyester to the core was 7% by weight based on the total weight of the fibers. The yarn was produced and subjected to false twisting in the same manner as in Example 1 to obtain a false twisted yarn having a yarn strength of 3.8 g / d. The moisture absorption / desorption parameter ΔMR of the false twisted yarn is 1.
2%.

The 150 denier 48 filament false twisted yarn was twisted at a twist of 200 T / M for both the warp and the weft, and the woven fabric structure was 2/1 and the warp density was 71.
A greige machine having a density of 50 pieces / inch and a weft density of 50 pieces / inch was produced. The greige fabric was finished by a usual dyeing method to obtain a woven fabric having a finishing density of 78 yarns / inch and a weft density of 58 yarns / inch. Table 1 shows the results of the same evaluation as in Example 1.

Comparative Example 1 A composite fiber multifilament yarn of 150 denier and 48 filaments was prepared in the same manner as in Example 1 except that the ratio of the hygroscopic copolyester to the core was 3% by weight based on the total weight of the fibers. Was subjected to false twisting in the same manner as in Example 1 to obtain a false twisted yarn having a yarn strength of 3.8 g / d. The moisture absorption / desorption parameter ΔMR of the false twisted yarn was 3.4%.

The false twisted yarn was woven and dyed under the same conditions as in Example 1 to obtain a woven fabric having the same density as in Example 1, and the same evaluation as in Example 1 was performed. The results are shown in Table 1. . Comparative Example 2 In Example 2, 150 denier, 48 filament false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%) of 100% polyester was used as the warp yarn, and 65% polyester / 35% cotton was used as the back yarn. No. 35 spun yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%) and two weft yarns consisting of 100% polyester, 150 denier, 48 filament false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%). Weaving and dyeing were performed under the same conditions as in Example 2 except for the use of the present invention, and a woven fabric having the same density as in Example 2 was obtained. This is referred to as Example 1
Table 1 shows the results of the same evaluation.

Comparative Example 3 150-denier, 48-filament false twisted yarn of 100% polyester (having a moisture absorption / desorption parameter ΔMR of 0.1
%), And the same evaluation as in Example 1 was performed using a cloth obtained by performing antistatic treatment on the surface of a woven fabric obtained in the same manner as in Example 3. Table 1 shows the evaluation results.

Example 4 A fabric similar to that of Example 1 was produced except that a warp yarn of 100% polyester and 150 denier, 48-filament false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%) was used. A woven fabric was prepared in the same manner as in Example 1, and the woven fabric was evaluated. Table 1 shows the evaluation results.

Example 5 In Example 1, a multi-filament multifilament yarn of 75 denier and 18 filaments in which the ratio of the hygroscopic copolyester was 20% by weight with respect to the total weight of the fiber and the core was made of a hygroscopic copolyester was produced. And normal false twisting was performed. This false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 3.4%) is used as a core yarn, and a 100% polyester 75% denier, 72 filament false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%) is used as a sheath yarn. ) And the sheath yarn is 5
The air entanglement processing was performed under the condition of supplying a% more.

Using this processed yarn (moisture absorption / desorption parameter ΔMR: 1.8%), weaving and dyeing were carried out under the same conditions as in Example 1 to obtain a woven fabric having the same density as in Example 1. 1
The same evaluation was performed. Table 1 shows the evaluation results. Comparative Example 4 A fabric similar to that of Example 5 was produced except that a warp yarn of 100% polyester and 150 denier, 48 filament false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.1%) was used. Weaving and dyeing were performed under the same conditions as in Example 5 to obtain a woven fabric. This was evaluated in the same manner as in Example 1. Table 1 shows the evaluation results.

Comparative Example 5 In the same air entanglement processing as in Example 5, weaving and dyeing were performed under the same conditions as in Example 5 except that 75% denier and 18 filaments of 100% polyester were used for the core yarn. The same evaluation as in Example 1 was performed. The evaluation results are summarized in Table 1. Comparative Example 6 A multifilament of 150 denier, 12 filaments, 150 denier, and 48 filament concentric core-sheath composite fiber in which the ratio of the hygroscopic copolyester to the core was 20% by weight based on the total weight of the fiber in Example 1. Yarn (moisture absorption / desorption parameter ΔMR: 3.4%) was obtained.

A 150-denier, 12-filament multifilament multifilament yarn is used for the warp, and a 150-denier, multifilament yarn is used for the weft.
Weaving and dyeing were performed under the same conditions as in Example 1 except that a multifilament multifilament yarn having a denier of 48 filaments was used, and a woven fabric having the same density as in Example 1 was obtained. The hand was very hard and could not be used for work clothes. Table 1 shows the evaluation results of the same evaluation as in Example 1 for this woven fabric.

Comparative Example 7 In Example 1, a concentric core-sheath composite of 75 denier, 36 filaments, 150 denier, and 48 filaments in which the ratio of the hygroscopic copolyester to the core was 20% by weight based on the total weight of the fibers in Example 1, was used. A false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 3.4%) was obtained in the same manner except that a fiber multifilament yarn was used.

Using a yarn of 75 denier, one 36-filament false twisted yarn for the warp, two deniers of 150 denier, 48 filament for the weft, and a twisted yarn of 200 T / M, the woven fiber is 2/2 twill, density 165 /
A greige machine having an inch and a weft density of 60 pieces / inch was produced. The greige fabric was finished by a usual method of dyeing work clothes to obtain a woven fabric having a finish density of 182 pieces / inch and a weft density of 70 pieces / inch.

The tear strength of the obtained woven fabric is 3000 g or more in both the longitudinal and weft directions, the moisture absorption / desorption parameter ΔMR is 3.4%, the moisture absorption / desorption parameter ΔMR after washing five times is 3.3%, the friction band The voltage was 0.1 kv, the friction band voltage after washing 5 times was 0.3 kv, and the amount of dust was 93 pieces / ft ^3.
It was 100 cm ² . However, the texture was hard and it was difficult to use as work clothes.

Example 6 340 parts of ε-caprolactam, 18 parts of terephthalic acid, polyethylene glycol 100 having a number average molecular weight of 1,000
The resulting mixture was charged into a polymerization reaction vessel, and a polymerization reaction was carried out to produce a polyetheresteramide block copolymer having a nylon 6 component ratio of 45% by weight.

A core component was prepared by blending 70 parts by weight of the obtained polyetheresteramide block copolymer and 30 parts by weight of modified polyethylene terephthalate obtained by copolymerizing 2 mol% of 5-sodium sulfoisophthalic acid in a chip state to obtain a polyethylene terephthalate. Was used as a sheath component, and a 150-denier, 48-filament, concentric core-sheath composite fiber multifilament yarn in which the above-mentioned polyetheresteramide block copolymer was 20% by weight of the total fiber weight was produced.

Using this multifilament multifilament yarn, false twisting was performed in the same manner as in Example 1 to give a false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 2.5%). A woven fabric was prepared and each evaluation was performed. The yarn strength of the obtained multifilament was 3.5 g / d.
The tear strength of the obtained woven fabric was 3 in both the warp and weft directions.
000 g, and the moisture absorption / desorption parameter ΔMR is 2.5
%, The moisture absorption / desorption parameter ΔMR after washing 5 times is 2.3.
%, The friction band voltage is 0.2 kv, the friction band voltage after washing 5 times is 0.3 kv, and the amount of dust is 85 pieces / ft ³ · 100
It was cm ^2.

In the comfort test, it was comfortable (（).
The comfort test after 5 washes was also very comfortable (○). Comparative Example 8 150 denier in which the polyetheresteramide block copolymer obtained in Example 6 was used as a core component, polyethylene terephthalate was used as a sheath component, and the polyetheresteramide block copolymer was 3% by weight of the total weight of the fiber. , 48 filament concentric core-sheath composite fiber multifilament yarn was produced.

This composite fiber multifilament yarn was subjected to false twisting in the same manner as in Example 1 to give a false twisted yarn (having a moisture absorption / desorption parameter ΔMR of 0.5%), and a woven fabric similar to that in Example 1 was produced. Each evaluation was performed. The yarn strength of the obtained multifilament was 3.9 g / d. Further, the tear strength of the obtained woven fabric is 3000 g in both the warp and weft directions,
The moisture absorption / desorption parameter ΔMR is 0.5%, and the moisture absorption / desorption parameter ΔMR after washing five times is 0.5%, and the friction band voltage is 2.
It was 2 kv, and the amount of dust was 85 particles / ft ³ · 100 cm ² . The comfort test was comfortable (△), and the comfort test after 5 washes was uncomfortable (△), and the stuffiness was strong.

[0072]

As described above, according to the present invention, while maintaining the advantages of polyester, such as form stability, mechanical strength, chemical resistance, heat resistance, and washing durability, it is possible to obtain an excellent moisture absorption rate. Eliminating feeling and stickiness, low dusting, and low frictional voltage can eliminate discomfort during wearing.

[Brief description of the drawings]

FIG. 1 is a model diagram showing a cross section of a core-sheath composite fiber used in the present invention.

FIG. 2 is a model diagram showing a cross section of a core-sheath composite hollow fiber used in the present invention.

FIG. 3 is a model diagram showing a cross section of a sea-island composite fiber used in the present invention.

FIG. 4 is a model diagram showing a cross section of a laminated conjugate fiber used in the present invention.

[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

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location A41D 31/00 501 A41D 31/00 501N 502 502B 503 503G D01F 6/86 301 D01F 6/86 301L 8 / 14 8/14 B

Claims (4)

[Claims] 1. A woven fabric containing a polyester filament yarn having a moisture absorption / desorption parameter ΔMR of 1% or more, wherein the moisture absorption / desorption parameter ΔMR of the woven fabric is 1% or more;
Friction charge voltage according to JIS L 1094 B method is 3 kv
Polyester workwear having a particle size of less than 20 to 100 pieces / ft ³ · 100 cm ² and a tear strength of 1500 to 6000 g. 2. The woven density of the warp and the weft of the woven fabric,
50 to 180 yarns / inch, and at least one of the warp and the weft has a single yarn fineness of 0.1 to 10
Denier, total fineness 75-300 denier, yarn strength 3.5
The polyester workwear according to claim 1, which is not less than g / d. 3. The polyester filament yarn,
The polyester according to claim 1 or 2, wherein the polyester is a composite fiber or a blend fiber containing 5% by weight or more of a copolymerized polyester containing at least one of a polar group-containing compound and a crosslinking agent while copolymerizing a hydrophilic compound. Work clothes. 4. The polyester-based filament yarn,
The polyester workwear according to claim 1 or 2, which is a composite fiber or a blend fiber containing 5% by weight or more of polyetheresteramide or a mixture of polyetheresteramide and another thermoplastic resin.