KR20200054941A - web - Google Patents

Abstract

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 metallic yarn, and the ratio of the diameter between the mixed yarn and the first non-metallic yarn: mixed yarn / first Non-metallic yarn is 1 or more, and the number of the mixed yarns included in a predetermined region of the woven fabric is 3.5 to 30% of the number of all yarns included in the predetermined region. The mixed yarn may be a covering yarn wound around the second nonmetallic yarn, or a plied yarn formed by twisting the second nonmetallic yarn and the metallic yarn.

Description

web

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

In recent years, woven fabrics that are easy to contact the skin have been required to inhibit and inhibit the growth of bacteria. As such a woven fabric, a woven fabric combining a non-metallic yarn and a metallic yarn composed of natural fibers or synthetic fibers has been proposed.

Patent Document 1 discloses a functional fabric using copper fiber yarns in whole or in part. Patent Document 2 discloses a conductive fiber sewing fabric in which several strands of line-shaped aluminum foil are twisted into a core yarn, and twisted yarn (braided yarn) and copper fiber are alternately woven at predetermined intervals. Patent Document 3 discloses a woven fabric that is woven using a mixed yarn formed by twisting at least copper-containing copper-containing wire and bag-like fibers.

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

In order to increase the antimicrobial properties, the ratio of the metal yarns may be increased by increasing the line diameter of the metal yarns or by using a mixed yarn having a large number of twists of the metal yarns relative to the non-metal yarns. However, in this method, on the other hand, the antimicrobial properties are increased, while the cloth is rough and hard, and the texture is inferior.

Moreover, in recent years, development of a lightweight woven fabric having excellent antibacterial properties is desired. When the mixed yarn containing a metal yarn and a non-metallic yarn was thinned for weight reduction, there were problems such as deterioration of antimicrobial properties or poor appearance of the non-metallic yarns in the mixed yarn.

The present invention is a woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting the mixed yarn, the mixed yarn comprising a second non-metallic yarn and a metallic yarn, and the ratio of the diameter of the mixed yarn and the first non-metallic yarn: mixed yarn / first It relates to a woven fabric in which the number of non-metallic yarns is 1 or more, and the number of mixed yarns included in a predetermined region of the woven fabric is 3.5 to 30% of the number of all yarns included in the predetermined region.

Such a woven fabric has excellent antibacterial properties, and is lightweight and has a good feel.

The mixed yarn may be a covering yarn wound around the second non-metallic yarn or a plied yarn formed by twisting the second non-metallic yarn and the metallic yarn together. Thereby, antibacterial property can be improved further.

ADVANTAGE OF THE INVENTION According to this invention, the woven fabric which is excellent in antimicrobial property, and has a good texture, and can be obtained.

The woven fabric of this embodiment includes a mixed yarn and a first non-metallic yarn intersecting the mixed yarn. The mixed yarn includes a second non-metallic yarn and a metallic yarn. Ratio of the diameter of the mixed yarn and the first nonmetallic yarn: 1 or more of the mixed yarn / first nonmetallic yarn. In addition, the number of the blended yarns included 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 the blended yarns included in the woven fabric is set to a specific range, and the ratio of the diameter of the blended yarn to the first nonmetallic yarn crossing it is set to a specific range. It is possible to expose a lot to at least one main surface of the woven fabric while reducing the content. Therefore, the obtained woven fabric has a good texture, light weight, and excellent antibacterial properties.

[web]

The woven fabric is formed by weaving at least the first non-metallic yarn and the mixed yarn using a loom. The mixed yarn may be included in both the weft yarn (weft yarn) and the warp yarn (slanted yarn), or may be contained only in the weft yarn or may be contained only in the warp yarn. In addition, one of the warp yarns and the weft yarns may be formed only of a mixed yarn.

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

The predetermined area is an area surrounded by a square having 2 cm of one side, for example, when one main surface of the woven fabric is included, and at least one mixed yarn is included. The number of yarns included in the region R can be calculated, for example, by making the number of yarns visible on both main surfaces of the woven fabric non-overlapping in a region surrounded by a square having a side of 2 cm.

Here, one thread is a unit containing one or more fibers, which can be introduced into a loom as a warp or weft and used for weaving. Examples of the fibers 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-metallic yarns and one or more metallic yarns is one thread.

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

The area ratio of the mixed yarn is determined by photographing the woven fabric in the normal direction of one main surface using a microscope (for example, a digital HF microscope manufactured by KEYENCE CORPORATION). For example, by changing the location, three main surfaces of the woven fabric are photographed, and at least one mixed yarn is included from each photographed field of view, and an area surrounded by a rectangle having a length of 2.3 cm and a width of 3.1 cm is respectively selected. do. 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 nonmetallic yarn (third nonmetallic yarn) disposed along the mixed yarn. Similarly, the weft yarn may contain a mixed yarn and a third non-metallic yarn. When the warp yarn and / or the weft yarn contains the mixed yarn and the third non-metallic yarn, the mixed yarn may be arranged at equal intervals, or may be arranged at irregular intervals. Especially, it is preferable that the mixed yarns are arranged at equal intervals. In this case, the obtained woven fabric is flexible and exhibits sufficient antibacterial performance.

In the above case, the density of the mixed yarn is not particularly limited. The density of the mixed yarn may be constant over the entire woven fabric, or the density of the mixed yarn may be partially changed. Among them, it is preferable that the mixed yarns are uniformly arranged at a ratio of "one mixed yarn with respect 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 the third non-metallic yarns constituting the weft is 8 times or less with respect to the number of the mixed yarns. The ratio between the number of the mixed yarn and the third non-metallic yarn may be 1: 2 to 1: 8, or 1: 2 to 1: 4. When the ratio of the number of the mixed yarn and the third non-metallic yarn is within the above range, the woven fabric is lightweight and flexible.

The spacing between adjoining mixed yarns may be 3600 µm or less, 3000 µm or less, or 2000 µm or less. When the spacing between the mixed yarns is within this range, the antibacterial effect obtained is enhanced. The spacing between the mixed yarns is the width of a gap formed between adjacent mixed yarns. The width is the length in the direction perpendicular to the long 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 becomes possible to manufacture a lightweight and ultra-thin woven fabric as compared to a woven fabric containing a conventional metal yarn. In addition, the thickness of the woven fabric can be measured using, for example, a thickness measuring instrument (PEACOCK # G-6 manufactured by Ozaki Seisakusho Co., Ltd., OZAKI MFG. CO., LTD.).

The woven fabric of the present embodiment has a high degree of freedom in design, such as the type, amount, diameter, type, arrangement, etc. of the first non-metallic yarn, the second non-metallic yarn and the metallic yarn in the woven fabric, and the third non-metallic yarn used as needed. Various woven fabrics can be obtained depending on the use and antibacterial properties.

The manufacturing method of the woven fabric of the present embodiment is not particularly limited, and it can be produced by weaving with a loom similar to a normal fabric. As the loom, a conventionally known loom can be used, for example, a shuttle type loom, a repeat type loom, an air jet type loom, a needle type loom, a water jet type loom, a gripper type loom, a jacquard loom, etc. have.

The woven tissue of the woven fabric is not particularly limited, and special tissues such as woven fabrics, twill fabrics, woven fabrics, and woven fabrics, and special tissues such as crepe fabrics and leno fabrics , Dobby organization, jacquard organization, double organization, multiple organization, and the like. Among them, from the viewpoint of texture, a runner-up is preferred, and furthermore, a runner-up of five is preferred.

Staphylococcus aureus, pneumococcal bacteria, etc. are mentioned as a bacterium which becomes the antibacterial target of the woven fabric of this embodiment.

(1st non-metallic yarn)

The first non-metallic yarn is not particularly limited, and yarns obtained from conventionally known fibers such as natural fibers, regenerated fibers, semisynthetic fibers, and synthetic fibers can be exemplified. Such fibers are substantially free of metal. These fibers may be used alone or in combination of two or more. Among them, synthetic fibers may be used for reasons of excellent durability, and especially polyester fibers may be used. There are many types of polyester fibers, and it is easy to select one suitable for the application of the woven fabric. Therefore, it is easy to apply the woven fabric to various uses. In addition, woven fabrics containing yarns formed of polyester fibers are also easy to perform post-processing such as dyeing, water repellent, oil repellent, antibacterial, deodorant, flame retardant, and UV cut. . In addition, the texture of the polyester fiber is hard to change even if it is dyed (dyed). Therefore, post-processing in which a film can be formed on the surface of the metal yarn can be omitted, and the antibacterial performance by the metal yarn is easily exhibited.

The form of the first non-metallic yarn is not particularly limited, and conventionally known forms such as a spun yarn (short fiber yarn), a multifilament yarn, and a monofilament yarn (long fiber yarn) can be given. Among them, from the viewpoint of quality, it may be between monofilament yarn and multifilament, and in particular from the viewpoint of texture, it may be between multifilament. In addition, the cross-sectional shape of the first non-metallic yarn (fiber) is not particularly limited. It may be a circular shape, or may be a so-called heterogeneous cross-section other than a circular shape.

The diameter of the first non-metallic yarn may be 24 to 644 µm, or 64 to 203 µm. When the diameter of the first non-metallic yarn is 24 µm or more, thread breakage is unlikely to occur. Moreover, it is not necessary to increase the direct density, and the cost is suppressed. When the diameter of the first non-metallic yarn is 644 µm or less, the resulting woven fabric is hard to be rough and hard, and the texture is hardly damaged.

The diameter of the first non-metallic yarn is obtained, for example, by photographing the woven fabric in the normal direction of one main surface using a microscope as described above. For example, by changing the location, three main surfaces of the woven fabric are photographed, and the length of the direction perpendicular to the long direction of the first non-metallic yarn in each photographed field of view is measured at arbitrary three points, respectively. Let the average value be the diameter of the first non-metallic yarn. The same applies to the diameter of the mixed yarn.

In this case, the fineness (total fineness) of the first nonmetallic yarn is 6 to 4,500 dtex, and 45 to 450 dtex. The fineness is a value indicating the thickness of the fiber specified by JIS L 0101-1978 (tex method), and is a value measured based on the JIS L 1013-1999 B method.

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

(Mixed yarn)

The mixed yarn includes a second non-metallic yarn and a metallic yarn. Specifically, it is preferable that the mixed yarn is a covering yarn wound around a second nonmetallic yarn or a twisted yarn formed by twisting the second nonmetallic yarn and the metallic yarn. In addition, in this specification, it is said that two threads are made to fit in parallel and twisted at the same time, and it is said to be made into one thread.

When the mixed yarn is a covering yarn, the mixed yarn is formed by winding a metallic yarn around the second non-metallic yarn. One mixed yarn includes one or more second non-metallic yarns and one or more metallic yarns. The number of windings to the second non-metallic yarn of the metallic yarn may be 1.1 to 3 times / cm. When the number of colds is 1.1 or more / cm, desired antibacterial properties are likely to be obtained. Moreover, when the number of windings is 3 times / cm or less, the mixed yarn itself is also lightweight and excellent in economical efficiency. Further, the woven fabric obtained by using the mixed yarn is hard to be rough and hard.

When the mixed yarn is a plied yarn, the mixed yarn is formed by twisting the second non-metallic yarn and the metallic yarn. One mixed yarn includes one or more second non-metallic yarns and one or more metallic yarns. The number of twists of the plied yarn may be 0.5 to 20 times / cm, or 3 to 6 times / cm. When the number of twists is 0.5 times / cm or more, desired antibacterial properties are likely to be obtained. Moreover, when the number of twisting is 20 times / cm or less, the mixed yarn itself becomes light weight, and it is excellent in economical efficiency. Further, the woven fabric obtained by using the mixed yarn is hard to be rough and hard.

The twist direction of the covering yarn and the twisted yarn may be either Z twist or S twist. Even if the twist direction is different, the obtained woven fabric has the same antimicrobial properties and texture. Therefore, the twist direction may be appropriately determined in consideration of selvedge curling during weaving.

The diameter of the mixed yarn may be 44 to 744 µm, or 64 to 344 µm. When the diameter of the mixed yarn is 44 µm or more, thread breakage is unlikely to occur. In addition, it is not necessary to increase the direct density, and it is excellent economically. When the diameter of the mixed yarn is 744 µm or less, the resulting woven fabric is hard to be rough and hard, and the texture is also hard to be damaged.

Ratio of the diameter of the mixed yarn and the first nonmetallic yarn: 1 or more of the mixed yarn / first nonmetallic yarn. Ratio of diameter: When the mixed yarn / first non-metallic yarn is 1 or more, since the number of mixed yarns (metallic yarns) exposed on the surface of the woven fabric increases, the antibacterial property of the resulting woven fabric increases. Ratio: The mixed yarn / first non-metallic yarn may be 1.2 or more, or 2 or more. Ratio: The upper limit of the mixed yarn / first non-metallic yarn is not particularly limited, but may be, for example, 35, 20, or 10.

(Metal yarn)

As the metal yarn, a line-shaped metal is used.

The metal yarn can be produced, for example, by passing a metal processed into a rod shape through a die having a desired diameter, and elongating it under heating or at room temperature. Examples of the material of the metal yarn include metals such as copper, silver, and zinc. Moreover, the copper alloy which combined zinc, silver, nickel, etc. individually or in combination with copper is also mentioned. Among them, from the viewpoint of antibacterial properties, it may be a metal containing copper as a main component (occupies 50% by mass or more). Examples of the metal yarn containing copper as a main component include electrical copper wires (JIS C3102), hard copper wires, and oxygen-free copper (JIS H3100, C1020). Especially, it may be a hard copper wire from an antimicrobial and economical viewpoint, and may be an oxygen-free copper from an antimicrobial viewpoint. The metal yarn constituting the mixed yarn is not limited to one type, and may be two or more kinds.

The diameter of the metal yarn 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 yarn is 20 µm or more, thread breakage is unlikely to occur, and desired antibacterial property can be obtained. If the diameter of the metal yarn is 100 µm or less, a lightweight woven fabric is likely to be obtained. Moreover, the obtained woven fabric is hard to be rough and hard.

(2nd non-metallic yarn)

As the second non-metallic yarn constituting the mixed yarn, a non-metallic yarn similar to that of the first non-metallic yarn can be used, and is suitably selected according to the properties required for the woven fabric. The first nonmetallic yarn and the second nonmetallic yarn may be the same or different.

Moreover, the 2nd non-metallic yarn which comprises a mixed yarn is not limited to 1 type, and may be 2 or more types.

Ratio of diameter between metal yarn and 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.

(3rd non-metallic yarn)

As the third non-metallic yarn that can be disposed along the mixed yarn, a non-metallic yarn similar to the first non-metallic yarn can be used, and is appropriately selected according to the properties required for the woven fabric. The first nonmetallic yarn and the third nonmetallic yarn may be the same or different. The second nonmetallic yarn and the third nonmetallic yarn may be the same or different. The third non-metallic yarn may be one type or two or more types.

Ratio of diameter between mixed yarn and third non-metallic yarn: The mixed yarn / third non-metallic yarn is not particularly limited. Ratio: The mixed yarn / third non-metallic yarn is, for example, 0.05 or more and 35 or less, and may be 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 by examples, but the present invention is not limited to these examples.

<Production of mixed yarn>

(Mixed yarn A)

To a polyester yarn (second non-metallic yarn, diameter 124 µm, fineness 167 dtex / 48f), an annealed copper wire (metallic yarn, diameter 40 µm) made of oxygen-free copper, S twisted in the twist direction, and twisted 2.5 times / cm Covering was performed to prepare a mixed yarn A (diameter 164 µm).

(Mixed yarn B)

To a polyester yarn (second non-metallic yarn, diameter 124 µm, fineness 167 dtex / 48f), a twisted copper wire (metallic yarn, diameter 40 µm) made of oxygen-free copper was twisted in the twist direction, and the number of twists was 2.5 times / cm. Covering was performed to prepare a mixed yarn B (diameter 164 µm).

(Mixed yarn C)

To a polyester yarn (second non-metallic yarn, diameter 124 µm, fineness 167 dtex / 48f), a twisted copper wire (metallic yarn, diameter 50 µm) made of oxygen-free copper was twisted in the twist direction, and the number of twists was 2.5 times / cm. Covering was performed to prepare a mixed yarn C (diameter 174 µm).

[Example 1]

<Production of woven fabric>

The produced mixed yarn A, polyester yarn A (first non-metallic yarn, diameter 72 µm, fineness 56 dtex / 25f), and polyester yarn B (third nonmetallic yarn, diameter 174 µm, fineness 330 dtex / 288f) were woven. Thus, 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 yarn was 1: 2. The number of the mixed yarns A included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) is set to be 11.9% of the total number of warp and weft yarns included in the region R, and the mixed yarn A is They were placed at equal intervals.

In the obtained woven fabric, the spacing between the mixed yarns A adjacent to each other was 1154 µm. Moreover, when the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric was 15.6% of the woven fabric area. A gap was formed between adjoining mixed yarn A and polyester yarn B. The thickness of the woven fabric was 293 µm.

<Evaluation of fabric>

The following evaluation was performed about the obtained woven fabric. Table 2 shows the results.

(1) Antibacterial

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 (microbial absorption method). Staphylococcus aureus NBRC 12732 was used as a test species, and a white cloth of 100% cotton was used as a standard cloth. The test cells and the standard cloth were inoculated with the test cells, and the measured values of the number of live cells immediately after the test cells were inoculated and after 18 hours of incubation were determined. Thereafter, bacteriostatic activity value S and bactericidal activity value L were calculated based on the following formula. When the bactericidal activity value was 2.2 or more and the bactericidal activity value was more than 0, it was judged that the antibacterial property was excellent.

S = (Mb-Ma)-(Mc-Mo)

L = Ma-Mc

   S ： bacteriostatic activity value

 L ： Sterilization activity value

 Ma: Log value of the number of live bacteria immediately after inoculation of the test fungus with standard cloth

Mb: Log value of viable cell count after 18 hours of incubation with standard cloth

 Mo: Log value of the number of live bacteria immediately after inoculation of the test fungus of test cloth

 Mc: Log value of viable cell count after 18 hours incubation of test cloth

(2) texture

The woven fabric was touched and judged according to the following criteria.

(Judgment)

Optimum: Soft.

Good: Some rough and hard parts, but no problem.

Poor: Rough and hard overall. In addition, disconnection of metal yarn is recognized.

[Example 2]

A woven fabric was produced in the same manner as in Example 1, except that the ratio of the number of the mixed yarn A and the polyester yarn B in the weft yarn was changed to 1: 4. The number of mixed yarns A included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 7.1% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns A adjacent to each other was 1865 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric was 16.6% of the woven fabric area. The thickness of the woven fabric was 279 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 3]

A woven fabric was produced in the same manner as in Example 1 except that the ratio of the number of the mixed yarn A and the polyester yarn B in the weft yarn was changed to 1: 6. The number of the mixed yarns A included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 5.1% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns A adjacent to each other was 2649 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric was 6.2% of the woven fabric area. A gap was formed between adjoining mixed yarn A and polyester yarn B. The thickness of the woven fabric was 274 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 4]

A woven fabric was produced in the same manner as in Example 1, except that the ratio of the number of the mixed yarn A and the polyester yarn B in the weft yarn was changed to 1: 8. The number of the mixed yarns A included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 3.9% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns A adjacent to each other was 3424 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric was 7.4% of the woven fabric area. The thickness of the woven fabric was 267 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[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 the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 11.9% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns B adjacent to each other was 1121.9 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric was 15.1% of the woven fabric area. A gap was formed between adjoining mixed yarn B and polyester yarn B. The thickness of the woven fabric was 305 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[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 the mixed yarns B included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 7.1% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns B adjacent to each other was 1640.6 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric was 16.3% of the woven fabric area. The thickness of the woven fabric was 291 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[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 the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 5.1% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns B adjacent to each other was 3430.4 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric was 6.4% of the woven fabric area. A gap was formed between adjoining mixed yarn B and polyester yarn B. The thickness of the woven fabric was 284 µm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[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 the mixed yarns B included in the predetermined region R of the woven fabric (the region surrounded by a square of 2 cm on one side) was set to be 3.9% of the total number of warp and weft yarns included in the region R.

In the obtained woven fabric, the spacing between the mixed yarns B adjacent to each other was 3579.8 µm. When the woven fabric was viewed from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric was 7.2% of the woven fabric area. The thickness of the woven fabric was 278 μm.

Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 9]

The mixed yarn C, the polyester yarn C (first non-metallic yarn, diameter 124 µm, fineness 167 dtex / 48f), and the polyester yarn D (third non-metallic yarn, diameter 124 µm, fineness 167 dtex / 48f) were woven, Made satin woven fabric. As shown in Table 1, the warp yarn was mixed yarn C and polyester yarn C, and the weft yarn was polyester yarn D, and the ratio of the number of the warp yarns to the mixed yarn C and polyester yarn C was 1: 4. . The number of the mixed yarns C included in the predetermined region R of the woven fabric (a region surrounded by a square of 5 cm on one side) is set to be 14.2% of the total number of warp and weft yarns included in the region R, and the mixed yarn C is The warp was placed at equal intervals. The linear density (design density) was 150 weft / 2.54 cm, and 60 warp / 2.54 cm.

On 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 yarns C occupied 100% of the main surface area. 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 evaluation results of (1) antibacterial properties and (2) texture.

Separately, the obtained woven fabric was washed 5 times, and the antibacterial activity and texture of Staphylococcus aureus and pneumococcus 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) of SEK-marked textile products of the fiber evaluation technology council regulations. In addition, evaluation of antimicrobial activity was performed in the same manner as the antimicrobial test of (1), and Staphylococcus aureus NBRC 12732 and pneumococcal bacteria (Klebsiella pneumoniae NBRC 13277) were used as the test species. Table 3 shows the evaluation results.

The woven fabrics obtained in Examples 1 to 9 are thin. In addition, it can be seen from Tables 2 and 3 that these woven fabrics exhibit high antibacterial properties and are also excellent in terms of texture. Moreover, as can be seen from Example 9, the woven fabric according to the present embodiment does not degrade antibacterial properties even by washing.

From these matters, it is possible to achieve excellent antimicrobial properties and texture by limiting the ratio of the diameter of the mixed yarn to the first non-metallic yarn and the number of mixed yarns included in the woven fabric in the woven fabric containing the metal yarn. It became clear.

According to the present invention, a woven fabric excellent in antibacterial properties and texture is obtained. Moreover, it is also possible to make a woven fabric thin, even though it contains a metal thread. Therefore, the woven fabric of the present invention includes seats such as seats, pillow covers, towels, linen products, pajamas, white coats, aprons, hats, uniforms, uniforms, and various medical products, automobile seats, chairs, and strollers. And its seat covers, bags, shoes, curtains, tents, sleeping bags, luncheon mats, seats for refrigerators, and the like.

Claims (2)

A woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting the mixed yarn,
The mixed yarn includes a second non-metallic yarn and a metallic yarn,
The ratio of the diameter of the mixed yarn and the first non-metallic yarn: 1 or more mixed yarn / first non-metallic yarn,
The number of the blended yarns included in a predetermined region of the woven fabric is 3.5 to 30% of the number of all yarns included in the predetermined region. According to claim 1,
The blended yarn is a covering yarn wound around the metal yarn on the second nonmetallic yarn, or a woven fabric formed by twisting the second nonmetallic yarn and the metal yarn.