JP2022059582A - Woven fabric - Google Patents

Abstract

To provide a woven fabric excellent in visible ray transmissivity, infrared ray shielding property, and light-diffusivity.SOLUTION: In a woven fabric formed of a plurality of warp yarns and a plurality of weft yarns, a portion of at least one of the plurality of warp yarns and the plurality of weft yarns is a tape-like yarn. The tape-like yarn contains a thermoplastic resin as a main component, and has a flatness of 7 to 300. In the tape-like yarn, one or more kinds selected from the group consisting of indium oxide fine particles, tungsten oxide fine particles, and antimony oxide fine particles are contained in an amount of 0.4 to 5.0 mass% based on the total mass of the tape-like yarn. At least one surface of the tape-like yarn has a surface roughness of 0.30 to 3.00 μm. The ratio of the total exposed area of the tape-like yarn in a unit area of the fabric is equal to or greater than 50%. The fabric has a plurality of through-holes, and the ratio of the total aperture area of the through-holes in the unit area of the fabric is from 10 to 40%.SELECTED DRAWING: None

Description

The present invention relates to woven fabrics.

In agriculture, there are problems of poor growth of agricultural products due to high temperature damage in summer and productivity deterioration due to quality deterioration. In horticultural crop houses, the temperature inside the house becomes high and the risk of sunstroke and heat stroke of workers is increasing year by year due to the temperature rise due to the influence of recent climate change. To solve these problems, it has been conventionally practiced to suppress the temperature rise in the house due to sunlight by using a sunshade sheet.

However, when the sunshade sheet is placed on the house, there is a problem that infrared rays, which are heat rays, are blocked, and at the same time, visible rays necessary for crop growth are also blocked.

Therefore, in response to the above-mentioned problems, as a sunshade sheet, a sunshade sheet made of a heat-shielding tape having translucency is known (see Patent Document 1). Further, as a sunshade sheet, a sunshade sheet in which uniaxially drawn yarns containing tungsten oxide fine particles having an infrared shielding power are crossed vertically and horizontally is also known (see Patent Document 2).

Japanese Unexamined Patent Publication No. 2020-005576 Japanese Unexamined Patent Publication No. 2011-0503007

However, the present inventors have found that the conventional sunshade sheet has the following problems. As described above, the sunshade sheet described in Patent Document 1 is a sunshade sheet made of a heat-shielding tape having translucency. In addition, the sunshade sheet is configured to use a heat-shielding film product having translucency. However, in this shade sheet, no consideration is given to the infrared shielding material and surface roughness of the heat-shielding tape having translucency and heat-shielding property, and both the transparency of visible light and the infrared-shielding property are poor. There is a problem that it is sufficient.

Further, as described above, the awning sheet described in Patent Document 2 is a awning sheet in which uniaxially drawn yarns containing tungsten oxide fine particles having an infrared shielding power are crossed vertically and horizontally. In addition, this awning sheet has a flat yarn structure in which uniaxially drawn yarn is in the form of a tape. However, this awning sheet does not consider the surface roughness of the flat yarn in which the uniaxially drawn yarn is in the form of a tape, and has a problem that the light diffusivity is insufficient.

Therefore, in view of the above problems, the present invention is a woven fabric that has both excellent transparency of visible light and excellent shielding property of infrared rays, which are trade-off characteristics, and has light diffusivity. The challenge is to provide excellent woven fabrics.

In order to solve the above problems, the woven fabric of the present invention is as follows.
That is,
(1) A woven fabric composed of a plurality of warps and a plurality of wefts, wherein a part of at least one of the plurality of warps and the plurality of wefts is a tape-shaped yarn, and the tape-shaped yarn is a tape-shaped yarn. The tape-shaped yarn contains a thermoplastic resin as a main component and has a flatness of 7 to 300. The tape-shaped yarn is selected from the group consisting of indium oxide fine particles, tungsten oxide fine particles, and antimony oxide fine particles. It contains 0.4 to 5.0% by mass based on the whole tape-shaped yarn, and the surface roughness of at least one surface of the tape-shaped yarn is 0.30 to 3.00 μm. The ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 50% or more, the woven fabric has a plurality of through holes, and the total opening area of the through holes in the unit area. The ratio of the above to the unit area is 10 to 40%, which is a woven fabric.
(2) Further, the flatness of the yarn is 6 or less, including the yarn, and one part of the plurality of warp yarns and the plurality of warp and weft yarns is a tape-shaped yarn, and the plurality of yarns are formed. It is preferable that the other of the warp and the plurality of wefts is the woven fabric of (1), which is the thread.
(3) The difference between the surface roughness of one surface of the tape-shaped yarn and the surface roughness of the other surface of the tape-shaped yarn is determined by the surface roughness of one surface of the tape-shaped yarn and the other surface of the tape-shaped yarn. It is preferable that the woven fabric is (1) or (2) in which the value obtained by dividing the surface roughness of the surface by the smaller surface roughness is 4 or more.
(4) The woven fabric according to any one of (1) to (3), wherein the yarn is a filament yarn made of a thermoplastic resin and the total fineness of the filament yarn is 50 to 400 dtex, is preferable.
(5) The woven fabric according to any one of (1) to (4) having a basis weight of 30 to 300 g / m ² is preferable.
(6) An agricultural sheet containing any of the woven fabrics (1) to (5) is preferable.

According to the present invention, it is possible to provide a woven fabric having excellent transparency of visible light, excellent shielding property of infrared rays, and excellent light diffusivity.

Hereinafter, the actual form of the present invention will be described in detail.

The woven fabric of the present invention is a woven fabric composed of a plurality of warps and a plurality of wefts, and a part of at least one of the plurality of warps and the plurality of wefts is a tape-shaped yarn and a plurality of yarns. It is provided with a through-hole, and the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric is 10 to 40%. Further, the surface roughness of at least one surface of the tape-shaped yarn is 0.30 to 3.00 μm. The tape-shaped yarn contains a thermoplastic resin as a main component, the tape-shaped yarn has a flatness of 7 to 300, and the tape-shaped yarn has indium oxide fine particles, tungsten oxide fine particles, and antimony oxide. One or more selected from the group consisting of fine particles is contained in an amount of 0.4 to 5.0% by mass based on the whole tape-shaped yarn. Further, the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 50% or more. The woven fabric of the present invention having all of these characteristics is excellent in the transparency of visible light, the shielding property of infrared rays, and the light diffusing property. In the specification of the present application, one or more selected from the group consisting of indium oxide fine particles, tungsten oxide fine particles, and antimony oxide fine particles may be referred to as metal oxide fine particles.

First, it is presumed that the mechanism by which the woven fabric of the present invention has excellent transparency of visible light is as follows. That is, the woven fabric of the present invention contains the plurality of warps and at least a part of at least one of the plurality of wefts containing a tape-shaped yarn, and the woven fabric has a plurality of through-holes, and the through-holes in a unit area of the woven fabric. When the ratio of the total opening area of the woven fabric to the unit area is 10% or more, the total amount of through holes in the woven fabric becomes appropriate. By setting the flatness of the tape-shaped yarn to 7 to 300 and the surface roughness of at least one surface of the tape-shaped yarn to 3.00 μm or less, the light incident on one surface of the woven fabric is emitted. The woven fabric is made to pass more from one side of the woven fabric to the other side, and as a result, the visible light transmission of the woven fabric of the present invention is excellent.

Next, it is presumed that the mechanism by which the woven fabric of the present invention has excellent infrared shielding properties is as follows. That is, the tape-shaped yarn contained in the woven fabric of the present invention contains a thermoplastic resin as a main component, the flatness of the tape-shaped yarn is 7 to 300, and the tape-shaped yarn is a tape-shaped metal oxide-based fine particles. It contains 0.4 to 5.0% by mass with respect to the entire yarn, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 50% or more, and the penetration in the unit area of the woven fabric. When the ratio of the total opening area of the mouth to the unit area is 40% or less, the woven fabric has strong light absorption at the wavelength in the near infrared region. Here, the details of the metal oxide-based fine particles will be described later, but the metal oxide-based fine particles have a performance of absorbing a large amount of light rays having a wavelength in the near infrared region.

Further, it is presumed that the mechanism by which the woven fabric of the present invention has excellent light diffusivity is as follows. That is, the flatness of the tape-shaped yarn is 7 to 300, the surface roughness of at least one surface of the tape-shaped yarn is 0.30 μm or more, and the total exposed area of the tape-shaped yarn in the unit area of the fabric. The ratio of the total opening area to the unit area of the fabric is 50% or more, and the ratio of the total opening area of the through-hole to the unit area is 40% or less, so that the light diffusivity is excellent.

The woven fabric of the present invention contains a tape-shaped yarn, and the tape-shaped yarn contains a thermoplastic resin as a main component. Here, the main component means that the thermoplastic resin is contained in an amount of more than 50% by mass with respect to the entire tape-shaped yarn. Specifically, any thermoplastic resin such as a polyolefin resin, a polyester resin, a methacrylic resin and a polycarbonate resin can be adopted as the thermoplastic resin. From the viewpoint of productivity, polyethylene resin, polypropylene resin, and polyethylene terephthalate resin are preferable.

In the woven fabric of the present invention, the flatness of the tape-shaped yarn is 7 to 300. The flatness is a value obtained by dividing the length in the long axis direction in the cross section of the fiber by the length in the minor axis direction in the cross section of the fiber. More specifically, it refers to the one measured by the method described in the section of the measuring method of Examples. The flatness of the tape-shaped yarn is preferably 10 or more, more preferably 20 or more, because the smoothness can be improved and the area of one surface that receives the incident light can be increased. .. On the other hand, the flatness of the tape-shaped yarn is preferably 200 or less, more preferably 150 or less, still more preferably 100 or less, because the rigidity can be increased and the handleability can be improved. Yes, especially preferably 50 or less.

The film used for the woven fabric of the present invention contains metal oxide-based fine particles in an amount of 0.4 to 5.0% by mass based on the whole tape-shaped yarn. The tape-shaped yarn preferably contains metal oxide-based fine particles in an amount of 0.6% by mass or more based on the total mass of the tape-shaped yarn, because the ability of the woven fabric to shield infrared rays is improved. , 0.8% by mass or more is more preferable. On the other hand, it is preferable that the tape-shaped yarn contains 4.0% by mass or less of the metal oxide-based fine particles with respect to the total mass of the tape-shaped yarn because it suppresses the decrease in the transparency of visible light. It is more preferable to contain 3.0% by mass or less.

The metal oxide-based fine particles are specifically one or more selected from the group consisting of indium oxide fine particles, tungsten oxide fine particles, and antimony oxide fine particles. When it is desired to further shield infrared rays having a wavelength of 780 to 1200 nm, the metal oxide-based fine particles are preferably composed mainly of tungsten oxide fine particles and are composed of only tungsten oxide fine particles. Is more preferable. Further, when it is desired to further shield infrared rays having a wavelength of 1200 to 2500 nm, it is preferable that the metal oxide-based fine particles contain indium oxide fine particles as a main component, and the metal oxide-based fine particles are only indium oxide fine particles. It is more preferable that it is composed of. Here, the main component means that a specific substance is contained in an amount of more than 50% by mass with respect to the total mass of the metal oxide-based fine particles, and is specified with respect to the total mass of the metal oxide-based fine particles. It is preferable to contain 80% by mass or more of the specific substance, and more preferably 95% by mass or more of the specific substance with respect to the total mass of the metal oxide-based fine particles. Among the tungsten oxide fine particles, cesium tungsten oxide is preferable because it can absorb and shield infrared rays more.

The tape-shaped yarn used in the woven fabric of the present invention has a surface roughness of at least one surface of 0.30 to 3.00 μm. Tape-like because it can suppress the uneven brightness of one side of the tape-like yarn caused by the non-uniform direction of the light emitted through the tape-like yarn, and as a result, the deterioration of the quality of the woven fabric can be suppressed. The surface roughness of at least one surface of the yarn is preferably 2.50 μm or less, more preferably 2.00 μm or less. The surface roughness of at least one surface of the tape-shaped yarn is preferably 0.50 μm or more, more preferably 0.70 μm or more, for the reason that the light diffusivity is excellent.

In the tape-shaped yarn used for the woven fabric of the present invention, the difference between the surface roughness of one surface of the tape-shaped yarn and the surface roughness of the other surface of the tape-shaped yarn is determined by the surface roughness of one surface of the tape-shaped yarn. It is preferable that the value obtained by dividing the surface roughness of the other surface of the tape-shaped yarn by the smaller surface roughness is 4 or more. The surface roughness of one surface of the tape-like yarn and the tape-like yarn because more straight light can enter from one surface of the tape-like yarn and diffuse more from the other surface of the tape-like yarn. The value obtained by dividing the difference from the surface roughness of the other surface of the tape-like yarn by the surface roughness of one surface of the tape-like yarn and the surface roughness of the other surface of the tape-like yarn is 10 The above is more preferable.

The short side width of the tape-shaped yarn used in the woven fabric of the present invention is preferably 1 to 15 mm. The short side width of the tape-shaped yarn should be 2 mm or more because it is possible to prevent the tape-shaped yarn from twisting and reversing the front and back sides of the tape-shaped yarn when weaving the tape-shaped yarn. preferable. On the other hand, the short side width of the tape-shaped yarn is more preferably 10 mm or less because it is excellent in handleability by improving the flexibility of the woven fabric.

The thickness of the tape-shaped yarn used in the woven fabric of the present invention is preferably 25 to 150 μm. The thickness of the tape-shaped yarn is more preferably 50 μm or more because the process passability when weaving the tape-shaped yarn can be improved, and the durability at the time of coating can be further improved. It is more preferably 75 μm or more. On the other hand, the thickness of the tape-shaped yarn is more preferably 125 μm or less, and further preferably 110 μm or less, because the decrease in handleability due to the increased rigidity can be suppressed.

In the woven fabric of the present invention, the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 50% or more. The ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is preferably 60% or more, because the ability of the woven fabric to shield infrared rays is more excellent. It is more preferable that the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of is 70% or more.

The woven fabric of the present invention is composed of a plurality of warps and a plurality of wefts, and the tape-shaped yarn is contained in at least one part of the plurality of warps and the plurality of wefts. That is, this woven fabric satisfies any one of the following conditions (1) to (3).
(1) A part of the plurality of warps is a tape-shaped yarn.
(2) A part of the plurality of wefts is a tape-shaped yarn.
(3) A part of the plurality of warps is a tape-shaped yarn, and a part of the plurality of wefts is a tape-shaped yarn.

Further, this woven fabric is made of threads because the tape-shaped yarn and the tape-shaped yarn can be eliminated from overlapping and intersecting points to improve the transmittance of visible light and improve the durability. It is preferable that a part of one of the plurality of warps and the plurality of wefts is the tape-shaped yarn, and the other of the plurality of warps and the plurality of wefts is the thread. The woven fabric of the present invention in this form is more preferably a woven fabric because of the improvement in durability and the ability to suppress the misalignment of the tape-shaped yarn, and the plurality of fabrics including the tape-shaped yarn are included. It is more preferred that one of the warp and the plurality of wefts contains a thread in parallel with the tape-like yarn.

The yarn used in the woven fabric of the present invention is preferably a filament yarn made of a thermoplastic resin. Specifically, as the thermoplastic resin, any thermoplastic resin fiber such as a polyester resin, a polyolefin resin, an acrylic resin and a polyamide resin can be adopted. The filament yarn may be monofilament or multifilament.

The yarn used for the woven fabric of the present invention preferably has a flatness of 6 or less. It is more preferable that the flatness of the yarn is 5 or less because the mechanical strength can be improved.

The total fineness of the filament yarn used in the woven fabric of the present invention is preferably 50 to 400 dtex. It is more preferable that the total fineness of the filament yarn is 70 dtex or more because the durability of the woven fabric is improved when used outdoors. On the other hand, the total fineness of the filament yarn is preferably 300 dtex or less because it is possible to suppress a decrease in handleability and a decrease in visible light transmittance due to the hardening of the woven fabric.

The thread used for the woven fabric of the present invention is one or more selected from the group consisting of titanium oxide, zirconium oxide, magnesium oxide, aluminum oxide, silicon oxide, zinc oxide, and calcium carbonate, and the total mass of the thread. It is preferably contained in a content of 0 to 0.5% by mass. In the specification of the present application, one or more selected from the group consisting of titanium oxide, zirconium oxide, magnesium oxide, aluminum oxide, silicon oxide, zinc oxide, and calcium carbonate may be referred to as a matting agent. By having the matting agent in the content of 0.5% by mass or less with respect to the total mass of the yarn, the light incident on the yarn is scattered through the yarn. Can be suppressed, and the transparency of visible light of the woven fabric becomes better. For the above reasons, it is preferable that the yarn does not contain a matting agent. Here, the matting agent is not particularly limited as long as it is usually used in the art. More specifically, the matting agent is one or more selected from the group consisting of titanium oxide, zirconium oxide, magnesium oxide, aluminum oxide, silicon oxide, zinc oxide, and calcium carbonate.

The woven fabric of the present invention has a plurality of through holes, and the ratio of the total opening area of the through holes to the unit area in the unit area of the woven fabric is 10 to 40%. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric means, more specifically, the one measured by the method described in the section of the measuring method of Examples. The ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric is preferably 15% or more, preferably 20% or more, because the transmission of visible light of the woven fabric becomes better. It is more preferable to have. The ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric is preferably 35% or less, preferably 30% or less, because it is possible to suppress the deterioration of the infrared shielding performance of the woven fabric. Is more preferable. Further, as a means for setting the ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric in the above range, the width of the tape-shaped yarn and the total fineness of the filament yarn may be adjusted. Be done.

The woven fabric of the present invention preferably has a basis weight of 30 to 300 g / m ² . It is more preferable that the basis weight of the woven fabric is 40 g / m ² or more because the occurrence of tearing during use can be suppressed. On the other hand, regarding the upper limit, it is more preferable that the basis weight of the woven fabric is 200 g / m ² or less because it is excellent in handleability.

The woven fabric of the present invention can be provided with functions such as an antifog agent, an antifouling agent, a repellent agent, an insect repellent agent, and an antibacterial agent by post-processing within a range that does not impair the effect of the present invention. Examples of the method of imparting the function include a dip-nip method and a spray method.

The textile of the present invention functions as an ultraviolet absorber or a light stabilizer in order to improve weather resistance when it is expected to be used in an environment exposed to sunlight such as outdoor use such as an agricultural sheet. It is preferable to give it. Examples of the ultraviolet absorber include triazine derivatives and benzotriazole derivatives. Examples of the light stabilizer include hindered amine derivatives. As a method for imparting the function of the ultraviolet absorber or the light stabilizer, it may be blended inside a tape-shaped yarn or a thread, or may be imparted by post-processing.

Further, the woven fabric of the present invention is suitably used for agricultural sheets. Further, it is preferably used for any sheet selected from the group consisting of awnings, shades, interior curtains, and blinds. Here, as long as the effect of the woven fabric of the present invention is not impaired, the sheet may be formed by sewing the woven fabric of the present invention and a sheet-like material other than the woven fabric of the present invention. Specifically, when the woven fabric is applied to an object to be constructed such as an agricultural house, the woven fabric of the present invention and a sheet-like material other than the woven fabric of the present invention are used when the width or length of the woven fabric is insufficient. Is integrated by sewing.

The light transmittance characteristic of the fabric of the present invention is that the transmittance of visible light in the wavelength range of 380 to 780 nm is 60% or more, and the transmittance of infrared rays in the wavelength range of 800 to 2500 nm is 60% or less. Is preferable. By using the above textiles for agricultural sheets, more visible light required for crop growth can be introduced into the interior of the agricultural house, while causing the temperature rise in the interior of the agricultural house. It is possible to block more infrared rays. The transmittance of visible light is more preferably 65% or more, still more preferably 70% or more. The infrared transmittance is more preferably 50% or less, still more preferably 40% or less. As a means for obtaining such a woven fabric, for example, the material described in Example 1 or the like is used, and the manufacturing method described in Example 1 can be adopted. The flatness of the tape-shaped yarn, the content of the metal oxide-based fine particles in the entire tape-shaped yarn, the surface roughness of at least one surface of the tape-shaped yarn, and the total exposed area of the tape-shaped yarn in the unit area of the woven fabric. The ratio of the above to the unit area, the application of tape-like yarns and threads to at least one part of the warp and weft constituting the woven fabric, the content of the matting agent contained in the threads, and the content of the woven fabric. By appropriately adjusting one or more selected from the group consisting of the ratio of the total opening area of the through-hole to the unit area in the unit area, the transmission rate of visible light and the wavelength of 800 to 2500 nm in the range of 380 to 780 nm of the woven fabric. The transmission rate of infrared rays in the above range can be set to the above range.

The light diffusivity property of the woven fabric of the present invention preferably has a diffusive transmittance of 45% or more. More preferably, it is 50% or more, and even more preferably 55% or more. By using the above-mentioned woven fabric for the agricultural sheet, the visible light entering the agricultural house room can be more dispersed, the leaf burning due to the straight light can be suppressed, and the plants can be illuminated more uniformly. As a means for obtaining such a woven fabric, for example, the material described in Example 1 or the like is used, and the manufacturing method described in Example 1 can be adopted. The flatness of the tape-shaped yarn, the surface roughness of at least one surface of the tape-shaped yarn, the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric, the warp and weft constituting the woven fabric. Appropriately adjust one or more selected from the group consisting of application of tape-like yarn or thread to at least one part of the above, ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric. By doing so, the diffusion permeability can be set within the above range.

Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited thereto. The performance in the examples was measured by the following method.

[Measuring method]
(1) Visible light transmittance and infrared transmittance A 50 cm square square woven fabric test piece was prepared. Using a spectrophotometer "UV-3600plus (manufactured by Shimadzu Corporation)", for 5 points of the test piece, the spectral transmittance with a wavelength of 380 to 2500 nm was applied at 2 nm intervals on one surface and the other surface of the test piece. It was measured. The positions of the five points of the test piece are the intersection of the two diagonal lines of the test piece and the points on the diagonal line A of one of the two diagonal lines of the test piece, and the corners A and the corners connected by the diagonal lines A. A point between the angle A of B and the above-mentioned intersection, a point on the diagonal line A, an intermediate point between the above-mentioned angle B and the above-mentioned intersection, and the other of the two diagonal lines of the test piece. A point on the diagonal line B, which is an intermediate point between the angle C and the intersection of the angles C and D connected by the diagonal line B, and a point on the diagonal line B, which is the intersection with the above angle D. A total of 5 points were set as the middle points of. With respect to the above five measurement points, the average value of the light transmittances in the range of the ten wavelengths of 380 to 780 nm obtained on one surface and the other surface is defined as the visible light transmittance (%), and the above 5 is used. For one measurement point, the average value of the light transmittances in the range of 800 to 2500 nm of the ten wavelengths obtained on one surface and the other surface was defined as the infrared transmittance (%). The measurement conditions were scan speed "medium speed", slit width "20 nm", detector unit "external (3 detectors)", S / R switching "standard", and slit program "standard".

(2) Diffusion transmittance Using a haze meter (NDH4000, manufactured by Nippon Denshoku Kogyo Co., Ltd.) compliant with JIS K 7136 (2000), one surface and the other surface of each test piece were used for 5 points of the test piece. Diffusion transmittance (%) at a total of 10 points was measured. The positions of the five points on the test piece were the same as those in the measurement method (1) visible light transmittance and infrared transmittance. Then, the average value of the obtained 10 measured values was calculated and used as the diffusion transmittance (%) in the present invention. The measurement light source was D65.

(3) Surface Roughness of Tape-Shaped Yarn Used for Woven Fabrics Using a surface roughness shape measuring machine (SURFCOM FLEX manufactured by Acretech), 5 sheets from the woven fabric by the evaluation method specified in JIS B 0601 (1994). Tape-shaped yarn test pieces were collected, and the surface roughness (μm) of one surface and the other surface of each test piece was measured. Then, the average value of the measured values at five points on one surface and the other surface of the obtained test piece was calculated, and the surface roughness (μm) of one surface of the tape-shaped yarn used for the textile in the present invention and the surface roughness (μm). The surface roughness (μm) of the other surface was used. The measurement speed was 0.15 mm / s.

(4) Total fineness of filament yarn 25 filament yarns are loosened from the sample based on JIS L 1018 (2010) 8.7.1, and the length (mm) and mass (mg) of the filament yarns are measured by the following formula. The total fineness of the filament yarn was determined.

T = W / L × 100
Here,
T: Total fineness (dtex)
W: Total mass (mg) of 25 filament yarns
L: Total length (mm) of 25 filament yarns
(5) Flatness Using a digital microscope (manufactured by KEYENCE, VHX-6000), observe the cross section of the tape-shaped yarn or thread, and length in the major axis direction D / length in the minor axis direction. From d, the number of observation samples was set to 10 by the following formula, and the value was calculated from the average value. In addition, the first decimal place and below are rounded off.
Flatness = D / d
(6) Metsuke (mass per unit area (1 m ² ) (g / m ² ))
The mass (g / m ² ) per unit area (1 m ² ) of the sample was determined by the method specified in JIS L 1018 (8.4.2) (2010).

(7) Ratio of the total opening area of the through hole to the unit area in the unit area of the fabric Using a digital microscope (manufactured by KEYENCE, VHX-6000), one side of the fabric and the other side, respectively. Five observation areas were randomly selected, and photographs with a 25x magnification (low-magnification lens VH-25) were taken in a total of 10 observation areas. Next, each of the obtained 10 photographs was processed using image processing software (software name: WinROOF, manufactured by Mitani Shoji Co., Ltd.), and the ratio of the total opening area of the through hole to the total area of the field of view of the above photographs. Was measured, and the average value was taken as the ratio (%) of the total opening area of the through-hole to the unit area in the unit area of the fabric. For the measurement of the ratio of the total opening area of the through hole to the unit area in the unit area of the textile, the above-mentioned image processing software is automatically binarized (threshold determination method: discriminant analysis method, light / darkness of extraction area: A dark area, a target density range: 0 to 255) was used. However, if it is difficult to determine the threshold value based on the above automatic binarization, it can be performed by setting the flat motion.

(8) Ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the fabric (7) Obtained in measuring the ratio of the total opening area of the through hole to the unit area in the unit area of the fabric. The photograph was used. Each of the obtained 10 photographs was processed using image processing software (software name: WinROOF, manufactured by Mitani Shoji Co., Ltd.), the total exposed area of the tape-shaped yarn in the above photographs was measured, and the average value was calculated. The ratio (%) of the total exposed area of the tape-shaped yarn to the unit area of the fabric was taken as the unit area. The manual measurement tool of the above image processing software was used to measure the entire area of the tape-shaped yarn.

(9) Thickness of tape-shaped yarn in fabric The thickness is measured using a dial gauge (IDC-112, manufactured by Mitutoyo), the number of samples is 10, and the thickness (μm) of tape-shaped yarn in fabric is calculated from the average value. I asked.

(10) Process passability The process passability when weaving into a woven fabric using a tape-shaped yarn was evaluated according to the following criteria.
◯: The number of tears in the tape-shaped yarn is less than 3.0 (pieces / tape-shaped yarn 100 m).
Δ: The number of tears of the tape-shaped yarn is 3.0 (pieces / tape-shaped yarn 100 m) or more and less than 5.0 (pieces / tape-shaped yarn 100 m).
X: The number of tears in the tape-shaped yarn is 5.0 (pieces / tape-shaped yarn 100 m) or more.

(11) Handleability test The handleability test was evaluated when the obtained woven fabric was coated on an agricultural house. Specifically, we prepared a woven fabric of the size required to cover the roof of an agricultural house, conducted a test to evaluate the handleability in the process up to the covering, and conducted the following test for 10 subjects. The handling test of the woven fabric was evaluated according to the standard. Then, a comprehensive evaluation was made based on the total score of each person's evaluation.
<Individual evaluation criteria>
3 points: Foldability, transportability, and covering workability for agricultural houses are all good.
2 points: Foldability, transportability, and covering workability for agricultural houses are all good.
1 point: Foldability, transportability, and covering workability for agricultural houses are all good.
0 point: Foldability, transportability, and covering workability for agricultural houses are all inferior.
<Total evaluation criteria>
⊚: 25 to 30 points ○: 17 to 25 points △: 10 to 16 points ×: 0 to 9 points (12) Durability test When the obtained woven fabric was coated on an agricultural house, the durability test was evaluated. .. Specifically, a woven fabric of a size necessary for covering the roof of an agricultural house was prepared, a durability test was carried out when the woven fabric was covered, and the evaluation was made according to the following criteria. It was carried out 5 times and the average was calculated and used as the number of tears.
〇: The occurrence of tearing is less than 1.0 (pieces / 10m ² ).
X: The occurrence of tearing is 1.0 (pieces / 10 m ² ) or more.

[Example 1]
(Tape yarn)
Polyethylene resin chips (Sumicasen F200, manufactured by Sumitomo Chemical Co., Ltd.) and powder (YMDS-874, manufactured by Sumitomo Metal Mining Co., Ltd.) in which metal oxide fine particles are dispersed are kneaded and made into chips so that the blending ratio is 75:25. A master chip is produced, and the obtained master chip and polyethylene resin chip (Sumicasen F200) as a base polymer are kneaded and melt-extruded at 220 ° C using a single-screw extruder and a T-die to form a metal cooling roll with a mirror surface. A film having a thickness of 100 μm was prepared by passing it between rubber cooling rolls having an embossed surface and picking it up with a take-up roll.

The obtained film was slit to obtain a tape-shaped yarn having a short side axis of 3.3 mm. Here, the tape-shaped yarn contained 1.2% by mass of tungsten cesium oxide as the metal oxide-based fine particles. The flatness of the tape-shaped yarn was 33.

(fabric)
A tape-shaped yarn obtained on a weft yarn using a rapier loom so that the warp yarn has a flatness of 1 as a yarn and a monofilament made of a polyethylene resin having a total fineness of 200 dtex is arranged at intervals of 5 lines / 2.54 cm. And the polyethylene monofilament having a flatness of 1 and a total fineness of 200 dtex, in a entwined weave, the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric. Weaving was performed so that the ratio was 20%, and a woven fabric was obtained. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 71%, an infrared transmittance of 35%, and a diffuse transmittance of 57%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 2]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 0.4% by mass. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 83%, an infrared transmittance of 59%, and a diffuse transmittance of 53%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.21 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 3]
A woven fabric was obtained in the same manner as in Example 1 except that the rubber cooling roll in the film production was changed to a rubber cooling roll having a tape-shaped yarn surface roughness of 0.30 μm to produce the film. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 71%, an infrared transmittance of 36%, and a diffuse transmittance of 45%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 0.32 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 4]
A woven fabric was obtained in the same manner as in Example 1 except that the metal cooling roll in the film production was changed to a rubber cooling roll having a tape-shaped yarn surface roughness of 0.20 μm to produce the film. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 67%, an infrared transmittance of 33%, and a diffuse transmittance of 55%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.18 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.22 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 5]
A woven fabric was obtained in the same manner as in Example 1 except that the metal cooling roll in the film production was changed to a rubber cooling roll having a tape-shaped yarn surface roughness of 0.40 μm to produce the film. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 63%, an infrared transmittance of 33%, and a diffuse transmittance of 50%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.24 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.43 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 6]
A woven fabric was obtained in the same manner as in Example 1 except that the yarn used for the woven fabric was changed to a monofilament made of a polyethylene resin having a flatness of 1 and a total fineness of 500 dtex. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 66%, an infrared transmittance of 34%, and a diffuse transmittance of 55%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.21 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 7]
The woven fabric is the same as in Example 1 except that the yarn used for the woven fabric is changed to a monofilament made of polyethylene resin containing 0.8% by mass of titanium oxide, a flatness of 1, and a total fineness of 200 dtex. Got The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 61%, an infrared transmittance of 33%, and a diffuse transmittance of 58%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.19 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 8]
A woven fabric was obtained in the same manner as in Example 1 except that the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric was 10%. The composition and performance of this woven fabric are shown in Table 1. This fabric has a visible light transmittance of 63%, an infrared transmittance of 24%, and a diffuse transmittance of 64%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 10%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 80%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 1 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 9]
A woven fabric was obtained in the same manner as in Example 1 except that the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric was 35%. The composition and performance of this woven fabric are shown in Table 2. This fabric has a visible light transmittance of 76%, an infrared transmittance of 55%, and a diffuse transmittance of 47%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 35%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 55%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 10]
The same as in Example 1 except that the powder in which the metal oxide fine particles used in Example 1 were dispersed was changed to a dispersed powder containing indium tin oxide (E-ITO, manufactured by Mitsubishi Materials Corporation). Obtained a textile. Here, the obtained tape-shaped yarn contained 1.2% by mass of indium tin oxide as metal oxide fine particles. The composition and performance of this woven fabric are shown in Table 2. The visible light transmittance of this fabric is 88%, the infrared transmittance is 55%, the diffuse transmittance is 60%, and the visible light transmittance, the infrared shielding property and the light diffusivity are excellent. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.21 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 11]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 2.0% by mass to prepare a film having a thickness of 20 μm. The composition and performance of this woven fabric are shown in Table 2. The visible light transmittance of this fabric was 76%, the infrared transmittance was 64%, the diffuse transmittance was 60%, and the visible light transmittance and the light diffusivity were excellent. The infrared shielding property was inferior. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 12]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 2.0% by mass to prepare a film having a thickness of 30 μm. The composition and performance of this woven fabric are shown in Table 2. This fabric has a visible light transmittance of 73%, an infrared transmittance of 56%, and a diffuse transmittance of 58%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.21 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 13]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 2.0% by mass to prepare a film having a thickness of 50 μm. The composition and performance of this woven fabric are shown in Table 2. This fabric has a visible light transmittance of 68%, an infrared transmittance of 42%, and a diffuse transmittance of 55%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.21 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 14]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 1.0% by mass to prepare a film having a thickness of 125 μm. The composition and performance of this woven fabric are shown in Table 2. This fabric has a visible light transmittance of 70%, an infrared transmittance of 35%, and a diffuse transmittance of 56%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 15]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 0.8% by mass to prepare a film having a thickness of 150 μm. The composition and performance of this woven fabric are shown in Table 2. This fabric has a visible light transmittance of 72%, an infrared transmittance of 36%, and a diffuse transmittance of 55%, and is excellent in visible light transmittance, infrared shielding property, and light diffusivity. Met. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.23 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Example 16]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 0.8% by mass to prepare a film having a thickness of 300 μm. The composition and performance of this woven fabric are shown in Table 2. The visible light transmittance of this fabric was 55%, the infrared transmittance was 22%, the diffuse transmittance was 42%, and the infrared shielding property was excellent, but the visible light transmittance was excellent. And the light diffusivity was inferior. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.19 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 2 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Comparative Example 1]
A woven fabric was obtained in the same manner as in Example 1 except that the yarn was changed to a tape-like yarn containing no metal oxide-based fine particles. The composition and performance of this woven fabric are shown in Table 3. The visible light transmittance of this fabric was 80%, the infrared transmittance was 80%, the diffuse transmittance was 55%, and the visible light transmittance and the light diffusivity were excellent. The infrared shielding property was inferior. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.24 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 3 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Comparative Example 2]
A woven fabric was obtained in the same manner as in Example 1 except that the content of tungsten cesium oxide in the tape-shaped yarn was changed to 0.2% by mass. The composition and performance of this woven fabric are shown in Table 3. The visible light transmittance of this fabric was 77%, the infrared transmittance was 70%, the diffuse transmittance was 56%, and the visible light transmittance and the light diffusivity were excellent. The infrared shielding property was inferior. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.17 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 3 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Comparative Example 3]
A woven fabric was obtained in the same manner as in Example 1 except that the rubber cooling roll in the film production was changed to a rubber cooling roll having a tape-shaped yarn surface roughness of 0.20 μm to produce a film. The composition and performance of this woven fabric are shown in Table 3. The visible light transmittance of this fabric was 73%, the infrared transmittance was 35%, the diffuse transmittance was 40%, and the visible light transmittance and the infrared shielding property were excellent. , The light transmittance was inferior. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 20%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 70%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 0.20 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 3 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Comparative Example 4]
A woven fabric was obtained in the same manner as in Example 1 except that the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric was 5%. The composition and performance of this woven fabric are shown in Table 3. The visible light transmittance of this fabric was 55%, the infrared transmittance was 20%, the diffuse transmittance was 60%, and the infrared shielding property and the light diffusivity were excellent, but they were visible. It was inferior in light transmittance. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 5%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 85%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.22 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 3 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

[Comparative Example 5]
A woven fabric was obtained in the same manner as in Example 1 except that the ratio of the total opening area of the through-hole to the unit area in the unit area of the woven fabric was 50%. The composition and performance of this woven fabric are shown in Table 3. The visible light transmittance of this fabric was 83%, the infrared transmittance was 71%, the diffuse transmittance was 32%, and the visible light transmittance was excellent, but the infrared shielding property was excellent. And it was inferior in light diffusivity. The ratio of the total opening area of the through hole to the unit area in the unit area of the woven fabric is 50%, and the ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 40%. The surface roughness of one surface of the tape-shaped yarn used for the woven fabric was 1.20 μm, and the surface roughness of the other surface of the tape-shaped yarn was 0.05 μm. Table 3 shows the evaluation results of the thickness of the tape-shaped yarn in the woven fabric, the process passability of the woven fabric, the handleability test, and the durability test.

The woven fabric of the present invention is suitable for use in agricultural sheets, awnings, shades, interior curtains, blinds and the like.

Claims (6)

A woven fabric composed of multiple warps and multiple wefts.
A part of at least one of the plurality of warps and the plurality of warps is a tape-shaped yarn.
The tape-shaped yarn contains a thermoplastic resin as a main component and contains.
The tape-shaped yarn has a flatness of 7 to 300 and has a flatness of 7 to 300.
The tape-shaped yarn contains 0.4 to 5.0% by mass of one or more selected from the group consisting of indium oxide fine particles, tungsten oxide fine particles, and antimony oxide fine particles with respect to the entire tape-shaped yarn. ,
The surface roughness of at least one surface of the tape-shaped yarn is 0.30 to 3.00 μm.
The ratio of the total exposed area of the tape-shaped yarn to the unit area in the unit area of the woven fabric is 50% or more.
The woven fabric has multiple through-holes and
A woven fabric in which the ratio of the total opening area of the through hole to the unit area in the unit area is 10 to 40%. In addition, including threads,
The flatness of the thread is 6 or less,
A part of the plurality of warps and one of the plurality of warps is a tape-shaped yarn.
The woven fabric according to claim 1, wherein the plurality of warps and the other of the plurality of wefts are the threads. The difference between the surface roughness of one surface of the tape-shaped yarn and the surface roughness of the other surface of the tape-shaped yarn is determined by the surface roughness of one surface of the tape-shaped yarn and the surface of the other surface of the tape-shaped yarn. The woven fabric according to claim 1 or 2, wherein the value obtained by dividing the roughness by the smaller surface roughness is 4 or more. The thread is a filament yarn made of a thermoplastic resin.
The woven fabric according to any one of claims 1 to 3, wherein the total fineness of the filament yarn is 50 to 400 dtex. The woven fabric according to any one of claims 1 to 4, which has a basis weight of 30 to 300 g / m ² . An agricultural sheet comprising the woven fabric according to any one of claims 1 to 5.