WO2019059029A1

WO2019059029A1 - Woven fabric

Info

Publication number: WO2019059029A1
Application number: PCT/JP2018/033504
Authority: WO
Inventors: 多田　秀行; 勝好藤間
Original assignee: セーレン株式会社; 理研電線株式会社
Priority date: 2017-09-22
Filing date: 2018-09-10
Publication date: 2019-03-28
Also published as: JP2019060029A; TW201920790A; CN111032937A; CN111032937B; JP6956580B2; KR20200054941A; TWI774843B; KR102543050B1

Abstract

This woven fabric includes: a mixed yarn; and a first nonmetal yarn that intersects the mixed yarn, wherein the mixed yarn includes a second nonmetal yarn and a metal yarn, the diameter ratio of the mixed yarn to the first nonmetal yarn (mixed yarn/first nonmetal yarn) is 1 or higher, and the number of mixed yarns included in a prescribed region of the woven fabric is 3.5-30% of the number of all yarns included in the prescribed region. The mixed yarn can be a covering yarn formed by winding the metal yarn on the second nonmetal yarn or a twisted yarn formed by twisting the second nonmetal yarn and the metal yarn together.

Description

Woven cloth

The present invention relates to a woven fabric having antibacterial properties.

In recent years, woven fabrics that are easy to touch the skin are required to have the property of preventing and suppressing bacterial growth. As such a woven fabric, a woven fabric in which a non-metallic yarn composed of natural fibers, synthetic fibers and the like and a metal yarn are combined has been proposed.

Patent Document 1 discloses a functional fabric using copper fiber yarn in whole or in part. Patent Document 2 discloses a conductive fabric sewn fabric in which yarns and copper fibers, which are formed by interlacing several linear aluminum foils with a core yarn, are alternately woven at predetermined intervals. Patent Document 3 discloses a woven fabric woven using a mixed yarn formed by twisting together a copper-containing wire containing at least copper and a spinnable fiber.

JP 2004-149945 A JP 2005-206987 A JP, 2012-153994, A

In order to enhance the antibacterial property, it is sufficient to increase the ratio of metal yarns by, for example, increasing the wire diameter of metal yarns or using a mixed yarn in which the number of times of twisting of metal yarns to nonmetal yarns is increased. . However, in this method, while the antibacterial property is high, the dough becomes coarse and hard to feel.

Moreover, in recent years, development of lightweight and excellent in antibacterial properties is desired. When the mixed yarn containing metal yarns and nonmetal yarns is made thinner for weight reduction, there are problems such as deterioration of antibacterial property and curving of nonmetal yarn in the mixed yarn and appearance defect The

The present invention is a woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting the mixed yarn, wherein the mixed yarn comprises a second non-metallic yarn and a metal yarn, and the mixed yarn and the first non-metallic yarn Ratio of diameter to yarn: mixed yarn / first non-metallic yarn is 1 or more, and the number of mixed yarns contained in a predetermined area of the woven fabric is 3 of the number of all yarns contained in the predetermined area. Relating to the woven fabric which is 5 to 30%.
Such a woven fabric is lightweight and has a good feel while having excellent antibacterial properties.

The mixed yarn may be a covering yarn obtained by winding a metal yarn around a second non-metallic yarn, or a composite yarn formed by twisting together a second non-metallic yarn and a metal yarn. This can further improve the antimicrobial properties.

According to the present invention, it is possible to obtain a lightweight woven fabric which is excellent in antibacterial properties and has a good feeling.

The woven fabric of the present embodiment includes a mixed yarn and a first non-metallic yarn that intersects the mixed yarn. The mixed yarn comprises a second non-metallic yarn and a metallic yarn. Ratio of diameter of mixed yarn to first non-metallic yarn: mixed yarn / first non-metallic yarn is 1 or more. Further, the number of mixed yarns contained in a predetermined area of the woven fabric is 3.5 to 30% of the number of all yarns contained in the predetermined area.

According to the woven fabric according to the embodiment of the present invention, the number of mixed yarns included in the woven fabric is in a specific range, and the ratio of the diameter of the mixed yarn to the first non-metallic yarn intersecting therewith is in a specific range In this way, a large amount of the mixed yarn can be exposed to at least one main surface of the woven fabric while reducing the content of the mixed yarn. Thus, the obtained woven fabric has a good feel, is lightweight, and has excellent antibacterial properties.

[Woven cloth]
The woven fabric is formed by weaving at least a first non-metallic yarn and a mixed yarn using a loom. The mixed yarn may be contained in both the weft and the warp, may be contained only in the weft, and may be contained only in the warp. In addition, one of the warp yarn and the weft yarn can be formed of only the mixed yarn.

The number of mixed yarns contained in a predetermined region (hereinafter, region R) of the woven fabric is 3.5 to 30% of the number of all yarns contained in the region R. When the number of mixed yarns is in the above range, the woven fabric is lightweight and flexible. It is also excellent in economics. The number ratio of the mixed yarn may be 5% or more, or 7% or more. The number ratio of the mixed yarn may be 25% or less, or 20% or less. All yarns include mixed yarns, first non-metallic yarns and third non-metallic yarns described below.

The predetermined area is an area including at least one mixed yarn when looking at one main surface of the woven fabric, for example, an area surrounded by a square having a side of 2 cm. The number of yarns included in the region R can be calculated, for example, by counting the number of yarns visible from both main surfaces of the woven fabric so as not to overlap in a region surrounded by a square having a side of 2 cm. .

Here, a single yarn is a unit containing one or more fibers which can be introduced as a warp or weft into a weaving machine and used for weaving. Examples of fibers constituting the yarn include spun yarn and filament yarn. However, in the case of mixed yarn, one twisted yarn including one or more second non-metallic yarns and one or more metal yarns is one yarn.

When the woven fabric is viewed in the normal direction of the main surface, the area of the mixed yarn on at least one of the main surfaces may be 5% or more, or 10% or more of the area of the woven fabric, 13 It may be% or more. Even when the area ratio of the mixed yarn is such small, high antibacterial properties can be easily obtained. The area ratio of the mixed yarn is 100% or less, may be 80% or less, and may be 50% or less.

The area ratio of the mixed yarn can be determined by photographing the woven fabric from the normal direction of one main surface using a microscope (for example, Digital HF microscope VH-8000 manufactured by Keyence Corporation). For example, at different places, one main surface of the woven fabric is photographed at three locations, and within each photographed field of view, it contains at least one mixed yarn and is surrounded by a rectangle of 2.3 cm in length and 3.1 cm in width. Select each area. In the three selected regions, the area of the mixed yarn is divided by the area of the region to calculate the area ratio of the mixed yarn. The average value of these is taken as the area ratio of the mixed yarn.

The warp yarns of the woven fabric may include mixed yarns and non-metallic yarns (third non-metallic yarns) disposed along the mixed yarns. Weft yarns may also include mixed yarns and third non-metallic yarns. When the warp yarns and / or weft yarns include the mixed yarn and the third non-metallic yarn, the mixed yarns may be equally spaced or irregularly spaced. Above all, the mixed yarns are preferably arranged at equal intervals. In this case, the obtained woven fabric exhibits sufficient antibacterial performance while being flexible.

In the above case, the density of the mixed yarn is not particularly limited. The density of the mixed yarn may be constant throughout the woven fabric, or may partially change the density of the mixed yarn. Among them, it is preferable that the mixed yarns be uniformly disposed at a ratio of “one mixed yarn to eight third non-metallic yarns” or more. This means that, for example, when the mixed yarn is included in the weft, the number of third non-metallic yarns constituting the weft is eight or less times the number of mixed yarn. The ratio of the number of mixed yarn to third nonmetallic yarn may be 1: 2 to 1: 8, or may be 1: 2 to 1: 4. When the ratio of the number of mixed yarn to the number of third nonmetallic yarns is in the above range, the woven fabric is lightweight and flexible.

The distance between adjacent mixed yarns may be 3600 μm or less, 3000 μm or less, or 2000 μm or less. When the distance between the mixed yarns is in this range, the obtained antibacterial effect is high. The distance between the mixed yarns is the width of the gap formed between the adjacent mixed yarns. The width is the length in the direction perpendicular to the longitudinal direction of the mixed yarn.

The thickness of the woven fabric is not particularly limited, but may be 70 to 1500 μm, 110 to 1000 μm, or 250 to 750 μm. According to this embodiment, it is possible to produce a lightweight and extremely thin woven fabric as compared to the conventional woven fabric containing metal yarn. The thickness of the woven fabric can be measured, for example, using a thickness measuring instrument (PEACOCK G-6, manufactured by Ozaki Mfg. Co., Ltd.).

The woven fabric of this embodiment includes the first non-metallic yarn, the second non-metallic yarn and the metal yarn in the woven fabric, and the type, amount, diameter, type, arrangement, etc. of the third non-metallic yarn used as needed. There is a high degree of freedom in designing, and various woven fabrics can be obtained according to the desired application, antibacterial properties and the like.

The method for producing the woven fabric of the present embodiment is not particularly limited, and the woven fabric can be produced by weaving with a loom in the same manner as an ordinary woven fabric. As the loom, conventionally known looms can be used. For example, shuttle type looms, rapier type looms, air jet type looms, needle type looms, water jet type looms, gripper type looms, jacquard type looms, etc. Can.

The woven texture of the woven fabric is not particularly limited, and it is not limited, and is a three-dimensional structure such as plain weave, twilled weave, and satin weave, a deformed structure of three-dimensional weave, a special tissue such as satin weave, tangled tissue, dobby tissue, jacquard tissue, double Organization, multiple organizations, etc. can be mentioned. Among them, from the viewpoint of feeling, a satin weave is preferred, and a 5-sheet satin weave is more preferred.

Examples of bacteria to be subjected to the antibacterial treatment of the woven fabric of the present embodiment include Staphylococcus aureus and Klebsiella pneumoniae.

(First non-metallic thread)
The first non-metallic yarn is not particularly limited, and may be a yarn obtained from conventionally known fibers such as natural fibers, regenerated fibers, semi-synthetic fibers and synthetic fibers. Such fibers are substantially free of metals. These fibers may be used alone or in combination of two or more. Among them, synthetic fibers may be used because of excellent durability, and polyester fibers may be used. There are many types of polyester fibers, and it is easy to select one suitable for woven applications. Therefore, it is easy to apply the woven fabric to various uses. In addition, woven fabrics including yarns formed of polyester fibers are easily subjected to post-processing such as dyeing, water-repellent processing, oil-repellent processing, antibacterial processing, deodorizing processing, flame-retardant processing, UV cutting processing, and the like. Furthermore, polyester fiber is less likely to change its feel even when pre-dyed (yarn-dyed). Therefore, post-processing by which a film can be formed on the surface of a metal thread can be omitted, and the antibacterial performance by the metal thread can be sufficiently exhibited.

It does not specifically limit as a form of a 1st non metallic thread, A conventionally well-known form, such as a spun yarn (short fiber yarn), a multifilament yarn, and a monofilament yarn (long fiber yarn), can be mentioned. Among them, monofilament yarns and multifilament yarns may be used from the viewpoint of quality, and in particular, multifilament yarns may be used from the viewpoint of texture. Moreover, the cross-sectional shape of the first non-metallic yarn (fiber) is also not particularly limited. It may be circular, or may be a so-called non-circular shaped cross-section yarn.

The diameter of the first non-metallic thread may be 24 to 644 μm, and may be 64 to 203 μm. When the diameter of the first non-metallic yarn is 24 μm or more, yarn breakage hardly occurs. Moreover, there is no need to increase the weave density, and the cost can be reduced. When the diameter of the first non-metallic yarn is 644 μm or less, the obtained woven fabric is unlikely to be coarse-hardened and the feeling is hardly impaired.

The diameter of the first non-metallic yarn can be determined, for example, by photographing the woven fabric from the normal direction of one of the main surfaces using a microscope as described above. For example, at different locations, one main surface of the woven fabric is photographed at three locations, and the length in the direction perpendicular to the longitudinal direction of the first non-metallic yarn in each of the photographed fields is at any three points. Measure and average these values as the diameter of the first nonmetallic thread. The diameter of the mixed yarn is also the same.

In the above case, the fineness (total fineness) of the first non-metallic yarn is 6 to 4500 dtex, and 45 to 450 dtex. The fineness is a value representing the thickness of a fiber defined by JIS L 0101-1978 (Tex method), and is a value measured based on JIS L 1013-1999 B method.

The first non-metallic yarn may be subjected to conventionally known treatments such as water absorption, water repellency, various treatments such as deodorization, and dyeing.

(Mixed yarn)
The mixed yarn comprises a second non-metallic yarn and a metallic yarn. Specifically, the mixed yarn is preferably a covering yarn obtained by winding a metal yarn around a second non-metal yarn, or a composite yarn formed by twisting together a second non-metal yarn and a metal yarn. In the present specification, two yarns are aligned and twisted to be one yarn.

When the mixed yarn is a covering yarn, the mixed yarn is formed by winding a metal yarn around the second non-metallic yarn. One mixed yarn includes one or more second non-metallic yarns and one or more metal yarns. The number of turns of the metal thread on the second non-metal thread may be 1.1 to 3 turns / cm. If the number of turns is 1.1 times / cm or more, desired antibacterial properties are easily obtained. In addition, if the number of turns is 3 times / cm or less, the mixed yarn itself is also light and excellent in economy. Furthermore, the woven fabric obtained using the mixed yarn is unlikely to be coarse and hard.

When the mixed yarn is a plied yarn, the mixed yarn is formed by twisting the second non-metallic yarn and the metal yarn. One mixed yarn includes one or more second non-metallic yarns and one or more metal yarns. The number of times of twisting of the plied yarn may be 0.5 to 20 times / cm, or may be 3 to 6 times / cm. If the number of twists is 0.5 times / cm or more, desired antibacterial properties can be easily obtained. In addition, when the number of twists is 20 times / cm or less, the mixed yarn itself is also light and excellent in economy. Furthermore, the woven fabric obtained using the mixed yarn is unlikely to be coarse and hard.

The direction of twisting of covering yarns and double-twisted yarns may be either Z twist or S twist. The antimicrobial properties and texture of the resulting woven fabric are the same even if the direction of twist is different. Therefore, the direction of twisting may be appropriately determined in consideration of the ear wrap at the time of weaving.

The diameter of the mixed yarn may be 44 to 744 μm, or may be 64 to 344 μm. When the diameter of the mixed yarn is 44 μm or more, yarn breakage hardly occurs. Moreover, it is not necessary to increase the weave density, and it is economically excellent. When the diameter of the mixed yarn is 744 μm or less, the obtained woven fabric is unlikely to be coarse-hard, and the feeling is also less likely to be lost.

Ratio of diameter of mixed yarn to first non-metallic yarn: mixed yarn / first non-metallic yarn is 1 or more. Diameter ratio: When the mixed yarn / first non-metallic yarn is 1 or more, the mixed yarn (metal yarn) exposed to the surface of the woven fabric is increased, and the antibacterial property of the obtained woven fabric is increased. Ratio: mixed yarn / first non-metallic yarn may be 1.2 or more, or 2 or more. The upper limit of the ratio: mixed yarn / first non-metallic yarn is not particularly limited, and may be 35, 20, or 10, for example.

(Metal thread)
A linear metal is used as the metal thread.
The metal thread can be produced, for example, by drawing metal processed into a rod shape through a die having a desired diameter and stretching it under heating or at ordinary temperature. As a material of a metal thread, metals, such as copper, silver, zinc, are mentioned. In addition, copper alloys in which zinc, silver, nickel and the like are singly or in combination with copper may also be mentioned. Among them, from the viewpoint of antibacterial properties, metal threads containing copper as a main component (which occupies 50% by mass or more) may be used. As a metal thread which has copper as a main component, a soft copper wire (JIS C3102) for electricity, a hard copper wire, and an oxygen free copper (JIS H3100, C1020) are mentioned. Among them, a hard copper wire may be used from the viewpoint of antibacterial properties and economy, and oxygen-free copper may be used from the viewpoint of antibacterial properties. The metal yarn that constitutes the mixed yarn is not limited to one type, and may be two or more types.

The diameter of the metal thread is not particularly limited, and may be 20 to 100 μm, 30 to 50 μm, or 40 to 50 μm. When the diameter of the metal thread is 20 μm or more, thread breakage hardly occurs, and desired antibacterial properties can be obtained. When the diameter of the metal yarn is 100 μm or less, a lightweight woven fabric is easily obtained. In addition, the obtained woven fabric is unlikely to be coarse and hard.

(Second non-metallic thread)
As a 2nd non metallic thread which constitutes mixed yarn, the non metallic thread similar to the above-mentioned 1st non metallic thread can be used, and it is chosen suitably according to the property for which textiles are required. The first non-metallic yarn and the second non-metallic yarn may be the same or different.
In addition, the second non-metallic yarn constituting the mixed yarn is not limited to one type, and may be two or more types.

Ratio of diameter of metal yarn to second non-metallic yarn: The metal yarn / second non-metallic yarn is not particularly limited. Ratio: metal yarn / second non-metal yarn is, for example, 0.2 or more and 1 or less.

(Third non-metallic thread)
As a 3rd non metallic thread which may be arranged along mixed yarn, the non metallic thread similar to the above-mentioned 1st non metallic thread can be used, and it is chosen suitably according to the property required for textiles. The first non-metallic yarn and the third non-metallic yarn may be the same or different. The second non-metallic yarn and the third non-metallic yarn may be the same or different. The third non-metallic yarn may be of one type or of two or more types.

Ratio of diameter of mixed yarn and third non-metallic yarn: mixed yarn / third non-metallic yarn is not particularly limited. Ratio: mixed yarn / third non-metallic yarn is, for example, 0.05 or more and 35 or less, may be 0.5 or more and 5 or less, and may be 0.7 or more and 2 or less.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

<Preparation of mixed yarn>
(Mixed yarn A)
A soft copper wire (metal thread, 40 μm in diameter) made of oxygen-free copper was used as a polyester yarn (second nonmetal thread, 124 μm in diameter, fineness of 167 dtex / 48f) with S twisting direction and 2.5 twisting times Covering as cm, mixed yarn A (diameter: 164 μm) was produced.

(Mixed yarn B)
A hard copper wire (metal thread, 40 μm in diameter) made of oxygen-free copper on polyester yarn (second nonmetal thread, 124 μm in diameter, fineness of 167 dtex / 48f), S twisting direction, 2.5 times of twisting times It covered as / cm and produced mixed yarn B (diameter 164 micrometers).

(Mixed yarn C)
A hard copper wire (metal thread, 50 μm in diameter) made of oxygen-free copper on polyester yarn (second nonmetal thread, 124 μm in diameter, fineness of 167 dtex / 48f), S twisting direction, 2.5 times of twisting times It covered as / cm and produced mixed yarn C (diameter 174 micrometers).

Example 1
<Production of woven fabric>
Weaving the prepared mixed yarn A, polyester yarn A (first non-metallic yarn, diameter 72 μm, fineness 56 dtex / 25 f), and polyester yarn B (third non-metallic yarn 174 m in diameter, fineness 330 dtex / 288 f) A plain weave woven fabric was made. As shown in Table 1, the warp yarn is polyester yarn A. The weft yarn is polyester yarn B and mixed yarn A. In the weft yarn, the ratio of the number of mixed yarn A to polyester yarn B is 1: 2. The number of mixed yarns A contained in a predetermined region R (a region surrounded by a square of 2 cm on a side) of the woven fabric is 11.9% of the total number of warps and wefts contained in the region R, The yarns A were arranged at equal intervals.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 1154 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn A was 15.6% of the area of the woven fabric on both sides of the woven fabric. There was a gap between adjacent mixed yarn A and polyester yarn B. The thickness of the woven fabric was 293 μm.

<Evaluation of woven fabric>
The following evaluation was performed about the obtained woven fabric. The results are shown in Table 2.

(1) Antibacterial Property A test cloth (0.40 g ± 0.05 g) was cut out from the produced woven fabric and evaluated in accordance with JIS L1902-2015 (bacterial fluid absorption method). Staphylococcus aureus (Staphylococcus aureus NBRC 12732) was used as a test species, and 100% cotton white cloth was used as a standard cloth. The test bacteria solution was inoculated on a test cloth and a standard cloth, and the measurement value of the number of viable bacteria immediately after inoculation of the test bacteria solution and after 18 hours of culture was obtained. Then, the bacteriostatic activity value S and the bactericidal activity value L were calculated based on the following formula. When the bacteriostatic activity value was 2.2 or more and the bactericidal activity value exceeded 0, it was judged that the antibacterial property was excellent.
S = (Mb-Ma)-(Mc-Mo)
L = Ma-Mc
S: bacteriostatic activity L: bactericidal activity Ma: logarithm of viable count immediately after inoculation of test fabric with standard cloth Mb: logarithm of viable count after 18 hours incubation of standard cloth Mo: examination of test cloth Logarithmic value of viable cell count immediately after inoculation of bacterial solution Mc: Logarithmic value of viable cell count after 18 hours incubation of the test cloth

(2) Touch The woven fabric was touched and judged in accordance with the following criteria.
(Judgement)
Best: Soft.
Good: There is a somewhat rough and hard part, but there is no problem.
Poor: Overall coarse and hard. Also, disconnection of the metal thread is observed.

Example 2
A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of mixed yarn A to polyester yarn B in the weft was changed to 1: 4. The number of mixed yarns A contained in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was set to 7.1% of the total number of warp yarns and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 1865 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn A was 16.6% of the area of the woven fabric on both sides of the woven fabric. The thickness of the woven fabric was 279 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 3]
A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of mixed yarn A to polyester yarn B in the weft was changed to 1: 6. The number of mixed yarns A included in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was made to be 5.1% of the total number of warps and wefts included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 2649 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn A was 6.2% of the area of the woven fabric on both sides of the woven fabric. There was a gap between adjacent mixed yarn A and polyester yarn B. The thickness of the woven fabric was 274 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

Example 4
A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of mixed yarn A to polyester yarn B in the weft was changed to 1: 8. The number of mixed yarns A contained in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was set to be 3.9% of the total number of warps and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 3424 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn A was 7.4% of the area of the woven fabric on both sides of the woven fabric. The thickness of the woven fabric was 267 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 5]
A woven fabric was produced in the same manner as in Example 1 except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in a predetermined region R (a region surrounded by a square of 2 cm on a side) of the woven fabric was 11.9% of the total number of warps and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 1121.9 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn B was 15.1% of the area of the woven fabric on both sides of the woven fabric. There was a gap between adjacent mixed yarn B and polyester yarn B. The thickness of the woven fabric was 305 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 6]
A woven fabric was produced in the same manner as in Example 2 except that mixed yarn A was changed to mixed yarn B. The number of mixed yarns B contained in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was 7.1% of the total number of warps and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 1640.6 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn B was 16.3% of the area of the woven fabric on both sides of the woven fabric. The thickness of the woven fabric was 291 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 7]
A woven fabric was produced in the same manner as in Example 3, except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was made to be 5.1% of the total number of warps and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 3430.4 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn B was 6.4% of the area of the woven fabric on both sides of the woven fabric. There was a gap between adjacent mixed yarn B and polyester yarn B. The thickness of the woven fabric was 284 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 8]
A woven fabric was produced in the same manner as in Example 4 except that mixed yarn A was changed to mixed yarn B. The number of mixed yarns B contained in a predetermined region R (a region surrounded by a square of 2 cm on one side) of the woven fabric was made to be 3.9% of the total number of warps and wefts contained in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 3579.8 μm. When the woven fabric was viewed in the normal direction of the main surface, the area of the mixed yarn B was 7.2% of the area of the woven fabric on both sides of the woven fabric. The thickness of the woven fabric was 278 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

[Example 9]
Weaving mixed yarn C, polyester yarn C (first nonmetal yarn, diameter 124 μm, fineness 167 dtex / 48f), and polyester yarn D (third nonmetal yarn, diameter 124 μm, fineness 167 dtex / 48f), and satin A woven woven fabric was made. As shown in Table 1, warp yarns were mixed yarn C and polyester yarn C, weft yarns were polyester yarn D, and the ratio of the number of mixed yarn C to polyester yarn C in the warp yarns was 1: 4. The number of mixed yarns C contained in a predetermined region R (a region surrounded by a square of 5 cm on a side) of the woven fabric is 14.2% of the total number of warps and wefts contained in the region R, The yarns C were arranged at equal intervals on the warp yarns. The weave density (design density) was 150 / 2.54 cm and 60 // 2.54 cm.
In one main surface of the obtained woven fabric, the mixed yarns C were arranged to be in contact with each other (interval: 0 μm), and the area of the mixed yarn C occupied 100% of the area of the main surfaces. In the other main surface, the area of the mixed yarn C was 7.1% of the area of the main surface. The thickness of the woven fabric was 275 μm.
The evaluation results of (1) antibacterial properties and (2) hand feeling are shown in Table 2.

Separately, the obtained woven fabric was washed 5 times, and the antibacterial property and the feeling to Staphylococcus aureus and Klebsiella pneumonia were evaluated for the woven fabric before laundering and the woven fabric after laundering. The washing method was according to the washing method (standard washing method) of the SEK mark textile product specified by the Fiber Evaluation Technology Council. The antibacterial property was evaluated in the same manner as the antibacterial property test of (1), and Staphylococcus aureus (Staphylococcus aureus NBRC 12732) and Klebsiella pneumoniae NBRC 13277 were used as test bacterial species. The evaluation results are shown in Table 3.

The woven fabrics obtained in Examples 1 to 9 are thin. Furthermore, it can be seen from Table 2 and Table 3 that these woven fabrics exhibit high antibacterial properties and are also excellent in terms of feel. Further, as can be seen from Example 9, the woven fabric according to the present embodiment does not have reduced antimicrobial properties even by washing.

From these facts, in the woven fabric containing the metal yarn, excellent antibacterial property and wind resistance can be obtained by limiting the ratio of the diameter of the mixed yarn to the first non-metallic yarn and the number of mixed yarns contained in the woven fabric. It became clear that it was possible to make the case compatible.

According to the present invention, a woven fabric having excellent antibacterial properties and feeling can be obtained. It is also possible to thin the fabric despite the inclusion of metal yarns. Therefore, the woven fabric of the present invention includes sheets, pillow covers, linen products such as towels, pajamas, white coats, aprons, hats, uniforms, various clothing articles such as uniforms, seat sheets such as car seats, chairs, strollers and the like It can be widely used for seat covers, bags, shoes, curtains, tents, sleeping bags, place mats, interior seats for refrigerators and the like.

Claims

A woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting with the mixed yarn,
The mixed yarn comprises a second non-metallic yarn and a metallic yarn,
The ratio of the diameter of the mixed yarn to the first non-metallic yarn: mixed yarn / first non-metallic yarn is 1 or more,
A woven fabric, wherein the number of the mixed yarns contained in a predetermined area of the woven fabric is 3.5 to 30% of the number of all the yarns contained in the predetermined area.
The covering yarn according to claim 1, wherein the mixed yarn is a covering yarn obtained by winding the metal yarn around the second non-metallic yarn, or a composite yarn formed by twisting the second non-metallic yarn and the metal yarn. Woven fabric.