JP2001279559A - Comfortable knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a comfortable knitted fabric suitable for clothes which have excellent moisture absorbability and moisture releasability, prevent sweatiness even under the conditions of a high temperature and a high humidity or on a hard exercise, and are scarcely uncomfortable when worn for a long time. SOLUTION: This comfortable knitted fabric is characterized in that at least 30% of yarns forming the pile loops of the pile knitted fabric are moisture- absorbing and releasing polyamide-based multifilament yarns containing a compound having excellent moisture absorbability, such as a polyalkylene oxide- modified compound. The ground loops forming yarns are polyester multifilament yarns comprising two or more kinds of filaments having different single filament cross-sectional shapes and single filament finenesses, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knitted fabric used for general clothing and sports clothing, and more particularly, has excellent antistatic, hygroscopic, and moisture releasing properties, and can be stuffy even under high temperature and high humidity or intense exercise. The present invention relates to a comfort knitted fabric suitable for a clothing material which prevents wear and causes less discomfort when worn for a long time.

[0002]

2. Description of the Related Art Synthetic fibers are superior to natural fibers such as cotton, hemp and wool in terms of strength, abrasion resistance, dimensional stability, wash-and-wear, quick-drying properties, and are widely used as clothing materials. Have been. However, synthetic fibers generally do not have the excellent anti-static, water-absorbing, or moisture-absorbing properties of natural fibers, and they tend to be clinged to by static electricity when worn in winter, adhere to dust, and sweat in summer. Smell, stickiness, etc. occurred, and the comfort was inferior to natural fibers.

[0003] In order to solve the above problems, attempts have been made to impart antistatic properties and water absorption to synthetic fibers. For example, a method in which an antistatic agent and a water-absorbing material are used in combination with a modified cross-section yarn having at least one concave portion such as a V-shape or a U-shape (Japanese Unexamined Patent Publication No.
JP-A-4-131045, JP-A-52-148218, JP-A-53-106848, JP-A-55-106848
Although these methods are known, it is possible to impart a certain level of antistatic property and water absorption performance. However, these methods were poor in performance and durability, and did not have the moisture absorption performance of natural fibers, and were inferior in comfort when compared to natural fibers.

[0004] In response to the above problems, synthetic fibers have antistatic properties,
Attempts have been made to impart water absorption and moisture absorption performance. For example, as a method of imparting the above function to nylon fibers and polyester fibers by post-processing, a method of graft-polymerizing vinyl carboxylic acid using a radical initiator or an electron beam (JP-A-4-146271, JP-A-4-272272).
However, this method has various problems such as a decrease in fiber strength due to processing and an insufficient durability of a hardening effect of texture. Also, a composite fiber blended with polyalkylene glycol at the stage of production of the raw yarn (JP-A-39-5214) and a hollow fiber made of a fiber-forming polymer having a through groove from the fiber surface to the hollow part (JP-A-60-1985) Japanese Patent Application Laid-Open No. 60-167969), and a microporous fiber obtained by alkali-treating a polyester fiber in which an organic sulfonic acid compound is uniformly dispersed has been proposed. However, none of these fibers had a low level of hygroscopicity, and did not satisfy the same satisfactory level of antistatic properties, water absorption, and moisture absorption / desorption performance.

[0005] In order to solve these problems, a core-sheath type composite fiber composed of a resin having a water absorbing property of 10% or more as a core and a polyester fiber as a sheath (Japanese Patent Laid-Open No. 2-9 / 1990).
No. 9612). However, although this fiber has sufficient water absorption and moisture absorption / desorption performance at the stage of production of the raw yarn, the sheath of the fiber is damaged during dyeing, especially during weight reduction, and the hygroscopic resin as the core component elutes. As a result, there is a problem that the initial water absorption and moisture absorption / desorption are reduced.
As described above, it is very difficult to impart sufficient antistatic property, water absorption, and moisture absorption / release performance to synthetic fibers.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a comfort knitted fabric having high antistatic properties, water absorption, and moisture absorption / release properties. It is intended for.

[0007]

Means for Solving the Problems The present invention achieves the above object, and at least 30% or more of the yarns forming the pile loop of the pile knitted fabric are at 25 ° C. and 60% RH. A comfort knitted fabric characterized by being a polyamide-based multifilament yarn having moisture absorption / desorption performance in which a difference between moisture absorption and moisture absorption at 34 ° C. and 90% RH is 3% or more;
And the pile knitted fabric, wherein the yarn forming the ground loop is a polyester multifilament yarn composed of two or more different filaments each having a single yarn cross-sectional shape and a single yarn fineness. The knitted fabric is the gist.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. The comfort knitted fabric of the present invention is a pile knitted fabric in which a pile loop is formed on a ground loop, and at least 30% or more of the yarn forming the pile loop has a size of 25% or more.
℃, 60% RH and moisture absorption at 34 ° C, 90% RH
Is a polyamide-based multifilament yarn having moisture absorption / desorption performance with a difference of 3% or more from the moisture absorption in the above. 34 ° C, 9
The state of 0% RH is a state called temperature and humidity between the skin and the clothes at the time of insensitive purification, which is exercising at 25 ° C. and 60% and sweating. A polyamide-based multifilament yarn capable of absorbing moisture well at 90% RH and capable of releasing the moisture when the temperature returns to 25 ° C. and 60% is used as a yarn forming a pile loop.

A polyamide-based multifilament yarn having such moisture absorption / desorption performance includes a modified polyalkylene oxide or a modified polyalkylene oxide obtained by reacting a polyalkylene oxide with a polyol and an aliphatic diisocyanate compound as a core component. A core-sheath hygroscopic polyamide multifilament yarn which is a mixture with polyamide and whose sheath component is polyamide is used. The above-mentioned modified polyalkylene oxide is particularly preferable from the viewpoint that a modified product obtained by a reaction of a compound selected from each of the following groups can be melt-spun simultaneously with the polyimide. As polyalkylene oxide,
Polyethylene oxide, polypropylene oxide and copolymers thereof, polyols such as glycols such as ethylene glycol, diethylene glycol and propylene glycol, and aliphatic diisocyanates include alicyclic diisocyanates, but dicyclohexylmethane-4, 4 ′ -Diisocyanate, 1,6 hexadiisocyanate and the like. At this time, the polyamide used as a mixture with the modified polyethylene oxide and the polyamide used as the sheath component include nylon 6, nylon 66, nylon 4 nylon 12, and the like, and are not particularly limited. , Nylon 66 are preferred.

In the present invention, the content of the polyamide-based multifilament yarn when the polyalkylene oxide-modified product is incorporated is varied depending on the kind of polyamide used and the composite ratio of the new component, because the moisture absorption / release properties of the obtained filament are different. Although not particularly limited in the present invention,
Generally 0.5 to 6 weight of polyamide filament
It is preferably in the range of 0% by weight. If the content of the modified polyalkylene oxide is less than 0.5% by weight, the desired moisture absorption / desorption property may not be obtained, and the content is 6%.
If the content exceeds 0% by weight, there is a possibility that a problem may occur in the spinning property, which is not preferable.

Regarding the arrangement relationship between the core component and the sheath component in the fiber cross section of the polyamide-based multifilament yarn, if the modified polyalkylene oxide is exposed on the filament surface, it depends on the content thereof. It is not preferable because it reduces the color fastness. That is,
It is only necessary that the modified polyethylene oxide is not exposed on the filament surface. The core component and the sheath component are not only concentric ones as shown in FIG. 1 but also eccentric types as shown in FIG. Such a so-called sea-island arrangement may be used. The cross-sectional shape of the filament is not particularly limited, and may be an elliptical cross-section, a triangular cross-section, a star-shaped cross-section, or the like, in addition to a circular cross-section, and as necessary, a coloring agent, a flame retardant, an antioxidant, and the like. Can be contained. Further, the form of the fiber is not particularly limited, and examples thereof include a raw yarn, a false twisted yarn, and an air jet processed yarn.

In the present invention, at least 30% or more of the yarn constituting the pile loop of the pile knitted fabric must be the above-mentioned polyamide-based multifilament yarn.
If the amount of the polyamide-based multifilament yarn is less than 30%, the effect of absorbing and releasing moisture becomes poor when the effect is measured using the knitted fabric as a product. When a yarn other than the above-described polyamide-based multifilament yarn is used as a yarn constituting the pile loop of the pile knitted fabric, a normal nylon filament yarn or a polyester filament yarn is used as the yarn type. Can be.

The polyamide multifilament yarn is formed into a pile loop because the pile loop has a three-dimensional shape, so that the contact area with air is very large.
This is because more moisture contained in the air can be absorbed. That is, when the knitted fabric of the present invention is worn with the pile surface on the skin side, water vapor generated by perspiration is efficiently absorbed, and the air in contact with the skin works to maintain comfortable humidity. The yarn constituting the ground portion of the pile knitted fabric which is the comfort knitted fabric of the present invention is preferably a polyester multifilament yarn. This is because the polyester is hydrophobic and the capillary phenomenon due to the gap between the single filaments is likely to occur. The polyester multifilament yarn is preferably composed of two or more types of filaments having a single yarn fineness and composed of two or more types of filaments having a single yarn cross-sectional shape. Furthermore, in the present invention, the gland portion is configured to transfer moisture due to perspiration and the like absorbed from the pile surface to the knitted fabric surface by the thread of the gland portion, and to perform the diffusion and diffusion functions on the knitted fabric surface more efficiently. It is preferable that the polyester multifilament yarn to be formed has an irregular cross-sectional shape, and examples of the irregular cross-sectional shape include a trilobal or higher multilobal shape, a W shape, and a well shape.
The polyester multifilament yarn constituting the ground portion of the knitted fabric may be a flat yarn or a yarn subjected to crimping such as false twist.

[0014]

According to the present invention, a knitted fabric using a polyester multifilament yarn for a ground loop of a pile knitted fabric and a hygroscopic polyamide multifilament yarn for a pile loop provides a polyalkylene oxide in a core portion. Since the denatured product quickly absorbs the moisture existing in the outside air, when the pile loop surface using the thread is worn on the skin side, the pile loop having a large surface area does not cause stuffiness between the clothes and the skin. Using polyester multifilament yarn on the surface of the knitted fabric and the ground part of the knitted fabric,
In the case of using a polyalkylene oxide modified product as a core component in a pile portion of a knitted fabric, and a hygroscopic polyamide multifilament yarn using polyamide as a sheath component,
The frictional charging of the knitted fabric is small, and the friction band voltage by the method B of JIS 1094, which is a level at which dust adheres due to static electricity, can be set to 1000 V or less.

[0015]

Next, the present invention will be described with reference to examples. In addition,
The measurement and evaluation of the performance in the examples were performed by the following methods. (1) Moisture absorption / desorption property After drying the sample at 105 ° C for 2 hours and measuring the weight W ₀ , the sample was conditioned at 25 ° C and a relative humidity of 60% for 2 hours to measure the weight W ₁ , The initial moisture content M ₀ is determined by the following equation (a). Next, the sample was allowed to absorb moisture at a temperature of 34 ° C. and a relative humidity of 90% for 24 hours.
₂ is measured, and the water content M ₁ is calculated by the following equation (b). Subsequently, this sample was subjected to a temperature of 25 ° C. and a relative humidity of 60.
%, The weight W ₃ is measured, and the moisture content M ₂ after dehumidification is calculated by the following equation (c). M ₀ (%) = [(W ₁ −W ₀ ) / W ₀ ] × 100 (a) M ₁ (%) = [(W ₂ −W ₀ ) / W ₀ ] × 100 (b) M ₂ (% ) = [(W ₃ −W ₀ ) / W ₀ ] × 100 (c) (2) Water Absorption The weight W of the sample before water absorption, in which the sample was conditioned for 2 hours at a temperature of 25 ° C. and a relative humidity of 60%. After weighing, JIS
The weight W ₆₀ of the water sample after 1 minute was measured by water absorption measurement method specified in -1097 5.3, determine the water absorption R by the following equation. R (%) = [(W ₆₀ −W) / W] × 100 (3) Antistatic property The antistatic property of the stained sample was measured by the following method. Half-life: JIS L-1094 A method Friction vs. voltage: JIS L-1094 B method (4) Diffusion coefficient 0.1 CC of colored water was dropped on the surface of the sample using a pipette, and the diffusion area after 60 seconds, ： Diffusion area 30cm
² or more (very good), ○: diffusion area 20 to 29 cm
² (good), Δ: diffusion area 20 to 29 cm ² (slightly poor), ×: diffusion area 20 to 29 cm ² (bad).

Example 1 As a yarn constituting a pile loop, 85 parts by weight of nylon 6 having a relative viscosity of 2.6 measured in a m-cresol solvent at a concentration of 0.5 g / deciliter at a temperature of 20 ° C., and polyethylene oxide; Polyalkylene modified product which is a reaction product of 1,4 butanediol and dicyclohexylmethane 4,4 'diisocyanate (1 g of water absorption capacity 35
g) a mixture obtained by blending with 15 parts by weight as a core component,
Nylon 6 having a relative viscosity of 2.6 was used as a sheath component, and both were arranged as shown in FIG. 1, and the weight ratio of the core component / sheath component was 50 /.
As 50, using a core-sheath composite spinneret having 24 discharge holes, melt-spinning was performed at a spinning temperature of 255 ° C., and 18 ° C.
After cooling by spraying air and applying an oil agent, 130
It is wound at 0 m / min and stretched 3.0 times, and the number of false twists is 3
The ground loop is formed by using a 78 dtex / 24f core-sheath type water-absorbing polyamide multifilament yarn that has been false twisted at 400 T / M, a false twist temperature of 180 ° C., and a false twist overfeed rate of −5%. As a constituent yarn, a polyester multifilament yarn consisting of 18 filaments having a round diameter of 3.5 dtex per filament and 24 filaments having a trilobular cross section having a irregularity of 3.5 having a monofilament fineness of 0.36 dtex is false twisted. Polyester different fineness irregular cross-section mixed-twisted false twisted yarn 73dtex / with several 3000 T / M, false twisting temperature 200 ° C, false twisting with false twist overfeed 0%
Using 42 filaments, knitting was performed with a sinker pile circular knitting machine. The obtained knitted fabric was subjected to refining, presetting, dyeing, and finishing setting by a conventional method to obtain a comfortable knitted fabric of the present invention. In addition, at the time of dyeing processing, water absorbing agent SR-1
000 (manufactured by Takamatsu Oil & Fat Co., Ltd.) to give a comfort knitted fabric of the present invention subjected to a water-absorbing water treatment.

Comparative Example 1 Example except that the false twisted yarn of the core-sheath type hygroscopic polyamide multifilament yarn constituting the pile loop portion of the knitted fabric was changed to a false twisted yarn of nylon 6 multifilament yarn 78 dtex / 24f. In the same manner as in Example 1, a knitted fabric of Comparative Example was obtained.

Comparative Example 2 Polyester heterofilament irregular-shaped mixed-fiber false twisted processing yarn 73dtex / 42 filament constituting the ground loop portion of the knitted fabric was converted into a round cross-section fiber 73dtex / 42 filament false-twisted yarn having a single yarn fineness of 1.8dtex. Except that the knitted fabric of Comparative Example 1 was obtained. Table 1 shows the evaluation results of the obtained knitted fabrics of Example 1 and Comparative Examples 1 and 2.

[0019]

[Table 1]

As apparent from Table 1, the knitted fabric of Example 1 has excellent performance in all of the items of moisture absorption / desorption, water absorption, antistatic property, and diffusivity, and is knitted for clothing. It was the best thing. However, Comparative Example 1 had good water absorbency and diffusivity, but was inferior in moisture absorbability and desorption, and antistatic properties. Comparative Example 2 showed that moisture absorbency and desorbability, water absorbency, antistatic properties, and diffusivity were all low. Items were inferior.

[0021]

EFFECT OF THE INVENTION The knitted fabric of the present invention has a reduced feeling of stuffiness due to gas-phase sweating at the beginning of wearing, and even if it becomes liquid sweating, it absorbs and diffuses quickly from the skin surface to the knitted fabric, so that it is comfortable without stickiness. It is a knitted fabric, and when used for clothing, particularly when used as athletic clothing, it is possible to provide clothing with excellent comfort.

[Brief description of the drawings]

FIG. 1 is an example of a cross section of a core-sheath structure composite fiber that can be used in the present invention.

FIG. 2 is an example of a cross section of a core-sheath conjugate fiber that can be used in the present invention.

FIG. 3 is an example of a cross section of a core-sheath composite fiber that can be used in the present invention.

[Explanation of symbols]

 1 core component 2 sheath component

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuhiro Tomimoto 4-3-1 Kutarocho, Chuo-ku, Osaka-shi, Osaka Unitika Fiber Co., Ltd. F-term (reference) 4L002 AA06 AB02 AB05 AC00 AC07 EA00 EA03 FA01 4L041 AA07 AA18 AA20 BA02 BA04 BA05 BA21 BA22 BC01 BC02 BC08 BD13 BD14 BD20 CA21 CA35 DD21

Claims (3)

[Claims] 1. The difference between the moisture absorption at 25 ° C. and 60% RH and the moisture absorption at 34 ° C. and 90% RH at least 30% of the yarns forming the pile loop of the pile knitted fabric. Is a polyamide-based multifilament yarn having moisture absorption / release performance of 3% or more. 2. The pile knitted fabric according to claim 1, wherein the yarn forming the ground loop is a polyester multifilament yarn composed of two or more different filaments each having a single yarn cross-sectional shape and a single yarn fineness. Comfortable knitted fabric characterized by the following. 3. A polyamide-based multifilament yarn having moisture absorbing / releasing performance is obtained by reacting a polyalkylene oxide modified product obtained by reacting a polyalkylene oxide with a polyol and an aliphatic diisocyanate compound, or a mixture of the modified product and a polyamide. The comfort knitted fabric according to claim 1 or 2, wherein the core component is a hygroscopic polyamide multifilament yarn having a core-sheath structure having a polyamide as a sheath component.