JP6956580B2 - Woven fabric - Google Patents

Description

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

In recent years, woven fabrics that come into contact with the skin have been required to have properties of inhibiting and suppressing the growth of bacteria. As such a woven fabric, a woven fabric in which a non-metal thread composed of natural fibers or synthetic fibers and a metal thread 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 fiber sewn fabric in which twisted yarns and copper fibers formed by entwining several linear aluminum foils with core yarns are woven alternately at predetermined intervals. Patent Document 3 discloses a woven fabric woven using a mixed yarn formed by twisting a copper-containing wire containing at least copper and a spinnable fiber.

Japanese Unexamined Patent Publication No. 2004-149945 Japanese Unexamined Patent Publication No. 2005-206987 Japanese Unexamined Patent Publication No. 2012-153994

In order to enhance the antibacterial property, the ratio of the metal yarn may be increased by increasing the wire diameter of the metal yarn or using a mixed yarn in which the number of times the metal yarn is twisted with respect to the non-metal yarn is increased. .. However, in this method, while the antibacterial property is high, the dough becomes coarse and hard, and the texture is inferior.

Further, in recent years, it has been desired to develop a lightweight woven fabric having excellent antibacterial properties. However, when the mixed yarn containing the metal yarn and the non-metal yarn is thinned, there are problems that the antibacterial property is lowered and the non-metal yarn in the mixed yarn is curved to deteriorate the appearance.

The present invention is a woven fabric containing a mixed yarn and a first non-metal yarn intersecting with the mixed yarn, wherein the mixed yarn includes a second non-metal yarn and a metal yarn, and the mixed yarn and the first non-metal yarn. Ratio of diameter to yarn: The number of mixed yarns / first non-metal yarn is 1 or more, and the number of mixed yarns included in a predetermined region of the woven fabric is 3 of the number of all yarns included in the predetermined region. .For woven fabrics that are 5-30%.
Such a woven fabric has an excellent antibacterial property and a good texture.

The mixed yarn is preferably a covering yarn in which a metal yarn is wound around a second non-metal yarn, or a twisted yarn formed by twisting a second non-metal yarn and a metal yarn. As a result, the antibacterial property can be further improved while the woven fabric is made lighter.

According to the present invention, it is possible to obtain a lightweight woven fabric having excellent antibacterial properties and a good texture.

The woven fabric of the present embodiment includes a mixed yarn and a first non-metal yarn intersecting with the mixed yarn. The mixed yarn includes a second non-metal yarn and a metal yarn. Ratio of diameter of mixed yarn to first non-metal yarn: The ratio of mixed yarn / first non-metal yarn is 1 or more. Further, the number of mixed yarns contained in the predetermined region of the woven fabric is 3.5 to 30% of the number of all yarns included in the predetermined region.

According to the woven fabric according to the embodiment of the present invention, the number of mixed yarns contained in the woven fabric is set to a specific range, and the ratio of the diameters of the mixed yarns and the first non-metal yarn intersecting the mixed yarns is set to a specific range. This allows a large amount of exposure to at least one main surface of the woven fabric while reducing the content of the mixed yarn. Therefore, the obtained woven fabric has a good texture, is lightweight, and has excellent antibacterial properties.

[Woven fabric]
The woven fabric is formed by weaving at least the first non-metal yarn and the 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, or may be contained only in the warp. Further, one of the warp and the weft can be formed only by the mixed yarn.

The number of mixed yarns included in a predetermined region (hereinafter, region R) of the woven fabric is 3.5 to 30% of the number of all yarns included 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 economical. The ratio of the number of mixed yarns is preferably 5% or more, more preferably 7% or more. The ratio of the number of mixed yarns is preferably 25% or less, more preferably 20% or less.

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

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

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

The area ratio of the mixed yarn is determined by photographing the woven fabric from the normal direction of one main surface using a microscope (for example, a digital HF microscope VH-8000 manufactured by KEYENCE CORPORATION). For example, at different locations, one main surface of the woven fabric was photographed at three locations, and each photographed field of view contained at least one mixed yarn and was surrounded by rectangles 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 yarn of the woven fabric may include a mixed yarn and a non-metal yarn (third non-metal yarn) arranged along the mixed yarn. The weft may also include a mixed yarn and a third non-metallic yarn. When the warp and / or weft contains a mixed yarn and a third non-metal yarn, the mixed yarns may be arranged at equal intervals or at irregular intervals. Among them, 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 the density of the mixed yarn may be partially changed. Among them, it is preferable that the mixed yarns are evenly arranged at a ratio of "1 mixed yarn to 8 third non-metal yarns" or more. This means that, for example, when the mixed yarn is included in the weft, the number of the third non-metal yarn constituting the weft is 8 times or less with respect to the number of the mixed yarn. The ratio of the number of mixed yarns to the third non-metal yarn is preferably 1: 2 to 1: 8, and more preferably 1: 2 to 1: 4. When the ratio of the number of mixed yarns to the third non-metal yarn is in the above range, the woven fabric is lightweight and flexible.

The distance between adjacent mixed yarns is preferably 3600 μm or less, preferably 3000 μm or less, and even more preferably 2000 μm or less. When the distance between the mixed yarns is within 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 length in the direction perpendicular to the longitudinal direction of the mixed yarns).

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

The woven fabric of the present embodiment includes a first non-metal thread, a second non-metal thread, a metal thread, and a third non-metal thread used as needed, such as type, amount, diameter, type, and arrangement. With a high degree of freedom in design, various woven fabrics can be obtained according to desired applications, 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 a normal woven fabric. As the loom, a conventionally known loom can be used. For example, a shuttle loom, a rapier loom, an air jet loom, a needle loom, a water jet loom, a gripper loom, a jacquard loom, or the like can be used. Can be done.

The woven fabric structure of the woven fabric is not particularly limited, and is composed of three original structures such as plain weave, twill weave, and satin weave, a modified structure of the three original structures, a special structure such as pear-skin weave, an entangled structure, a dobby structure, a jacquard structure, and a double weave. Organizations, multiple organizations, etc. can be mentioned. Of these, from the viewpoint of texture, satin weave is preferable, and five satin weave is more preferable.

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

(1st non-metal thread)
The first non-metal yarn is not particularly limited, and examples thereof include yarns obtained from conventionally known fibers such as natural fibers, regenerated fibers, semi-synthetic fibers, and synthetic fibers. Such fibers are substantially metal-free. These fibers may be used alone or in combination of two or more. Among them, synthetic fibers are preferable, and polyester fibers are particularly preferable, because they are excellent in durability. There are many types of polyester fibers, and it is easy to select the one that is suitable for the application of the woven fabric. Therefore, the versatile development of the woven fabric becomes easy. In addition, the woven fabric containing threads formed from polyester fibers can be easily subjected to post-processing such as dyeing, water-repellent processing, oil-repellent processing, antibacterial processing, deodorant processing, flame-retardant processing, and UV cut processing. Furthermore, the texture of polyester fibers does not change easily even when dyed with yarn (yarn dyeing). Therefore, the post-processing that can form a film on the surface of the metal thread can be omitted, and the antibacterial performance of the metal thread can be sufficiently exhibited.

The form of the first non-metal yarn is not particularly limited, and conventionally known forms such as spun yarn (short fiber yarn), multifilament yarn and monofilament yarn (long fiber yarn) can be mentioned. Of these, monofilament yarns and multifilament yarns are preferable from the viewpoint of quality, and multifilament yarns are particularly preferable from the viewpoint of texture. Further, the cross-sectional shape of the first non-metal thread (fiber) is not particularly limited. It may be circular or may be a so-called irregular cross-section yarn other than circular.

The diameter of the first non-metal yarn is preferably 24 to 644 μm, more preferably 64 to 203 μm. When the diameter of the first non-metal yarn is 24 μm or more, yarn breakage is unlikely to occur. In addition, it is not necessary to increase the weaving density, and the cost can be suppressed. When the diameter of the first non-metal yarn is 644 μm or less, the obtained woven fabric is less likely to become coarse and hard, and the texture is less likely to be impaired.

The diameter of the first non-metal yarn is determined, for example, by photographing the woven fabric from the normal direction of one main surface using a microscope as described above. For example, at three different locations, one main surface of the woven fabric is photographed, and the length in the direction perpendicular to the longitudinal direction of the first non-metal yarn in each photographed visual field is set at any three points. The measurement is performed, and the average value thereof is taken as the diameter of the first non-metal yarn. The same applies to the diameter of the mixed yarn.

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

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

(Mixed yarn)
The mixed yarn includes a second non-metal yarn and a metal yarn. Specifically, the mixed yarn is preferably a covering yarn in which a metal yarn is wound around a second non-metal yarn, or a twisted yarn formed by twisting a second non-metal yarn and a metal yarn. In addition, in this specification, it is said that two yarns are aligned and twisted to form one yarn.

When the mixed yarn is a covering yarn, the mixed yarn is formed by winding a metal yarn around the second non-metal yarn. One mixed yarn includes one or more second non-metal yarns and one or more metal yarns. The number of times the metal thread is wound around the second non-metal thread is preferably 1.1 to 3 times / cm. When the number of windings is 1.1 times / cm or more, the desired antibacterial property can be easily obtained. Further, when the number of windings is 3 times / cm or less, the mixed yarn itself is lightweight and economical. Further, the woven fabric obtained by using the mixed yarn is less likely to become coarse and hard.

When the mixed yarn is a blended yarn, the mixed yarn is formed by twisting a second non-metal yarn and a metal yarn. One mixed yarn includes one or more second non-metal yarns and one or more metal yarns. The number of twists of the combined twisted yarn is preferably 0.5 to 20 times / cm, and more preferably 3 to 6 times / cm. When the number of twists is 0.5 times / cm or more, the desired antibacterial property can be easily obtained. Further, when the number of twists is 20 times / cm or less, the mixed yarn itself becomes lightweight and is excellent in economy. Further, the woven fabric obtained by using the mixed yarn is less likely to become coarse and hard.

The twisting direction of the covering yarn and the combined twist yarn may be either Z twist or S twist. The resulting woven fabric has the same antibacterial properties and texture, even if the twisting direction is different. Therefore, the twisting direction may be appropriately determined in consideration of the ear wrapping at the time of weaving.

The diameter of the mixed yarn is preferably 44 to 744 μm, more preferably 64 to 344 μm. When the diameter of the mixed yarn is 44 μm or more, yarn breakage is unlikely to occur. In addition, it is not necessary to increase the weaving density, which is economically excellent. When the diameter of the mixed yarn is 744 μm or less, the obtained woven fabric is less likely to become coarse and hard, and the texture is less likely to be impaired.

Ratio of diameter of mixed yarn to first non-metal yarn: The ratio of mixed yarn / first non-metal yarn is 1 or more. Diameter ratio: When the number of mixed yarns / first non-metal yarns is 1 or more, the number of mixed yarns (metal yarns) exposed on the surface of the woven fabric increases, so that the antibacterial property of the obtained woven fabric becomes high. Ratio: The mixed yarn / first non-metal yarn is preferably 1.2 or more, and more preferably 2 or more. Ratio: The upper limit of the mixed yarn / first non-metal yarn is not particularly limited, but may be, for example, 35, 20, or 10.

(Metal thread)
As the metal thread, a linear metal is used.
The metal thread can be produced, for example, by passing a metal processed into a rod shape through a die having a desired diameter and stretching it under heating or at room temperature. Examples of the material of the metal thread include metals such as copper, silver, and zinc. Further, a copper alloy obtained by combining zinc, silver, nickel, etc. with copper alone or in combination of two or more can be mentioned. Among them, from the viewpoint of antibacterial properties, a metal thread containing copper as a main component (accounting for 50% by mass or more) is preferable. Examples of the metal thread containing copper as a main component include annealed copper wire for electricity (JIS C3102), a hard copper wire, and oxygen-free copper (JIS H3100, C1020). Among them, hard copper wire is preferable from the viewpoint of antibacterial property and economy, and oxygen-free copper is preferable from the viewpoint of antibacterial property. The metal yarn constituting 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 is preferably 20 to 100 μm, more preferably 30 to 50 μm, and further preferably 40 to 50 μm. When the diameter of the metal thread is 20 μm or more, thread breakage is unlikely to occur, and desired antibacterial properties can be obtained. When the diameter of the metal thread is 100 μm or less, a lightweight woven fabric can be easily obtained. In addition, the obtained woven fabric is unlikely to become coarse and hard.

(2nd non-metal thread)
As the second non-metal yarn constituting the mixed yarn, the same non-metal yarn as the first non-metal yarn can be used, and it is appropriately selected according to the properties required for the woven fabric. The first non-metal thread and the second non-metal thread may be the same or different.
Further, the second non-metal yarn constituting the mixed yarn is not limited to one type, and may be two or more types.

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

(Third non-metal thread)
As the third non-metal yarn that can be arranged along the mixed yarn, the same non-metal yarn as the first non-metal yarn can be used, and is appropriately selected according to the properties required for the woven fabric. The first non-metal thread and the third non-metal thread may be the same or different. The second non-metal thread and the third non-metal thread may be the same or different. The third non-metal yarn may be one kind or two or more kinds.

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

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these examples.

<Making mixed yarn>
(Mixed yarn A)
Annealed copper wire (metal yarn, diameter 40 μm) made from oxygen-free copper is twisted in a polyester yarn (second non-metal yarn, diameter 124 μm, fineness 167 dtex / 48f) in the twist direction S, and the number of twists is 2.5 times / Covering was performed as cm to prepare a mixed yarn A (diameter 164 μm).

(Mixed yarn B)
A hard copper wire (metal yarn, diameter 40 μm) made from oxygen-free copper is twisted in a polyester yarn (second non-metal yarn, diameter 124 μm, fineness 167 dtex / 48f) in the twisting direction S, and the number of twists is 2.5 times. Covering was performed at / cm to prepare a mixed yarn B (diameter 164 μm).

(Mixed yarn C)
A hard copper wire (metal yarn, diameter 50 μm) made from oxygen-free copper is twisted in a polyester yarn (second non-metal yarn, diameter 124 μm, fineness 167 dtex / 48f) in the twisting direction S, and the number of twists is 2.5 times. Covering was performed at / cm to prepare a mixed yarn C (diameter 174 μm).

[Example 1]
<Making woven fabric>
The produced mixed yarn A, polyester yarn A (first non-metal yarn, diameter 72 μm, fineness 56 dtex / 25f) and polyester yarn B (third non-metal yarn, diameter 174 μm, fineness 330 dtex / 288 f) are woven. , A plain woven fabric was produced. As shown in Table 1, the warp yarn is polyester yarn A. The weft yarns were polyester yarn B and mixed yarn A, and the ratio of the number of mixed yarn A and polyester yarn B in the weft was 1: 2. The number of mixed yarns A included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 11.9% of the total number of warp yarns and weft yarns included in the region R, and the yarns are mixed. The threads A were arranged at equal intervals.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 1154 μm. Further, when the woven fabric was viewed from 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 the adjacent mixed yarn A and the polyester yarn B. The thickness of the woven fabric was 293 μm.

<Evaluation of woven fabric>
The obtained woven fabric was evaluated as follows. The results are shown in Table 2.

(1) Antibacterial property A test cloth (0.40 g ± 0.05 g) was cut out from the prepared woven cloth and evaluated in accordance with JIS L1902-2015 (bacterial solution absorption method). Staphylococcus aureus NBRC 12732 was used as the test bacterial species, and 100% cotton white cloth was used as the standard cloth. The test cloth and the standard cloth were inoculated with the test bacterial solution, and the measured values of the viable cell count immediately after the test bacterial solution inoculation and after culturing for 18 hours were determined. Then, the bacteriostatic activity value S and the bactericidal activity value L were calculated based on the following formulas. If the bacteriostatic activity value is 2.2 or more and the bactericidal activity value is more than 0, it is judged that the antibacterial property is excellent.
S = (Mb-Ma)-(Mc-Mo)
L = Ma-Mc
S: Bacteriostatic activity value L: Bactericidal activity value Ma: Log of viable cell count immediately after inoculation with test bacterial solution of standard cloth Mb: Logistic value of viable cell count after 18-hour culture of standard cloth Mo: Test of test cloth Log of viable cell count immediately after inoculation with bacterial solution Mc: Logistic value of viable cell count after 18-hour culture of test cloth

(2) The texture woven fabric was touched and judged according to the following criteria.
(judgement)
◯: Soft.
Δ: There is a slightly rough part, but there is no problem.
X: Overall, it is coarse and hard. In addition, 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 yarns A and polyester yarns B in the weft was changed to 1: 4. The number of mixed yarns A included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 7.1% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 1865 μm. Further, when the woven fabric was viewed from 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.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[Example 3]
A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of mixed yarns A and polyester yarns B in the weft was changed to 1: 6. The number of mixed yarns A included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 5.1% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 2649 μm. Further, when the woven fabric was viewed from 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 the adjacent mixed yarn A and the polyester yarn B. The thickness of the woven fabric was 274 μm.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[Example 4]
A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of mixed yarns A and polyester yarns B in the weft was changed to 1: 8. The number of mixed yarns A included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 3.9% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns A was 3424 μm. Further, when the woven fabric was viewed from 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.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[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 included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 11.9% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 1121.9 μm. Further, when the woven fabric was viewed from 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 the adjacent mixed yarn B and the polyester yarn B. The thickness of the woven fabric was 305 μm.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[Example 6]
A woven fabric was produced in the same manner as in Example 2 except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 7.1% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 1640.6 μm. Further, when the woven fabric was viewed from 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.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[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 included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 5.1% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 3430.4 μm. Further, when the woven fabric was viewed from 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 the adjacent mixed yarn B and the polyester yarn B. The thickness of the woven fabric was 284 μm.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[Example 8]
A woven fabric was produced in the same manner as in Example 4 except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B included in a predetermined region R (area surrounded by a square having a side of 2 cm) of the woven fabric is 3.9% of the total number of warp yarns and weft yarns included in the region R.
In the obtained woven fabric, the distance between adjacent mixed yarns B was 3579.8 μm. Further, when the woven fabric was viewed from 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.
Table 2 shows the results of evaluating (1) antibacterial properties and (2) texture of woven fabrics.

[Example 9]
The mixed yarn C, the polyester yarn C (first non-metal yarn, diameter 124 μm, fineness 167 dtex / 48f) and the polyester yarn D (third non-metal yarn, diameter 124 μm, fineness 167 dtex / 48f) are woven and satin. A woven woven fabric was produced. As shown in Table 1, the warp yarns were the mixed yarn C and the polyester yarn C, the weft yarn was the polyester yarn D, and the ratio of the number of the mixed yarn C and the polyester yarn C in the warp yarn was 1: 4. The number of mixed yarns C included in a predetermined region R (area surrounded by a square having a side of 5 cm) of the woven fabric is 14.2% of the total number of warp yarns and weft yarns included in the region R, and the yarns are mixed. The threads C were arranged at equal intervals on the warp threads. The weaving density (design density) was 150 warp / 2.54 cm and 60 weft / 2.54 cm.
On one main surface of the obtained woven fabric, the mixed yarns C were arranged so as to be in contact with each other (interval 0 μm), and the area of the mixed yarns C occupied 100% of the area of the main surface. On 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.
Table 2 shows the results of evaluation of (1) antibacterial property and (2) texture of the woven fabric.

In addition, the obtained woven fabric was washed 5 times, and the antibacterial properties and texture against yellow staphylococci and pneumonia rods were evaluated for each of the woven fabric before washing and the woven fabric after washing. The washing method was in accordance with the washing method (standard washing method) for SEK mark textile products specified by the Textile Evaluation Technology Council. The antibacterial property was evaluated in the same manner as in the antibacterial property test of (1), and Staphylococcus aureus NBRC 12732 and Klebsiella pneumoniae NBRC 13277 were used as test bacterial species. The evaluation results are shown in Table 3.

From Tables 2 and 3, it can be seen that the woven fabrics obtained in Examples 1 to 9 show high antibacterial properties, are thin, and are excellent in terms of texture. Further, as can be seen from Example 9, the woven fabric according to the present embodiment does not deteriorate in antibacterial property even by washing.

From these facts, in the woven fabric containing metal yarn, excellent antibacterial property and wind are achieved by limiting the ratio of the diameters of the mixed yarn and the first non-metal yarn and the number of mixed yarns contained in the woven fabric. It became clear that it would be possible to achieve both.

According to the present invention, a woven fabric having excellent antibacterial properties and texture can be obtained. It is also possible to make the woven fabric thinner even though it contains metal threads. Therefore, the woven fabric of the present invention includes linen products such as sheets, pillowcases and towels, various clothing products such as pajamas, white robes, aprons, hats, uniforms and uniforms, seats for seats such as car seats, chairs and strollers, and their seats. It can be widely used for seat covers, bags, shoes, curtains, tents, sleeping bags, luncheon mats, seats for refrigerators, etc.

Claims (4)

A woven fabric containing a mixed yarn and a first non-metal yarn intersecting with the mixed yarn.
The mixed yarn contains a second non-metal yarn and a metal yarn.
The ratio of the diameter of the mixed yarn to the first non-metal yarn: 1 or more of the mixed yarn / the first non-metal yarn.
The number of the mixed yarns contained in the predetermined area of the woven fabric is 3.5 to 25% of the number of all the yarns contained in the predetermined area.
Further comprising a third non-metallic yarn arranged along the mixed yarn
The ratio of the number of the mixed yarn to the third non-metal yarn is the mixed yarn: the third non-metal yarn = 1: 2 to 8.
The diameter of the metal thread is in the range of 20 μm to 100 μm.
The mixed yarn is a covering yarn obtained by winding the metal yarn around the second non-metal yarn, or a twisted yarn formed by twisting the second non-metal yarn and the metal yarn.
When the mixed yarn is the covering yarn, the number of times the metal yarn is wound around the second non-metal yarn is in the range of 1.1 to 3 times / cm.
When the mixed yarn is the combined yarn, the number of twists of the combined yarn is in the range of 0.5 to 20 times / cm . In the mixed yarn, the ratio of the diameters of the metal yarn to the second non-metal yarn: the metal yarn / the second non-metal yarn is 0.2 or more and 1 or less.
The woven fabric according to claim 1, wherein the distance between adjacent mixed yarns is 3600 μm or less. The woven fabric according to claim 1 or 2, wherein the ratio of the diameters of the mixed yarn to the third non-metal yarn: the mixed yarn / the third non-metal yarn is 0.5 or more and 5 or less. The woven fabric according to any one of claims 1 to 3, wherein the mixed yarns are arranged at equal intervals.