JP2014180251A - Bird proof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bird proof sheet that has both of bird proof property and odor control property, and also has transparency when viewed by a human eye.SOLUTION: A bird proof sheet is a flexible mesh sheet that has a base fabric comprising a coarse knitted fabric constituted of a fiber yarn and a flexible resin layer formed on both sides of the base fabric, and has a porosity of 25-70%. In the bird proof sheet, one side of the flexible mesh sheet forms an ultraviolet ray scattering plane by containing a flexible resin layer containing at least inorganic particles selected from among barium sulfate particles, aluminum oxide particles, magnesium oxide particles and zirconium oxide particles, and a stain-proof resin layer formed of an acryl resin and/or a fluororesin on the flexible resin layer. The opposite surface side of the flexible mesh sheet is an odor control surface containing the flexible resin layer on the outer-most layer containing at least deodorant, and a content of inorganic particles to the mass of the flexible resin layer on the side of the ultraviolet ray scattering plane is 10-50 mass%.

Description

  The present invention relates to a bird-proof sheet that keeps birds away by blocking the eyes of birds. More specifically, the present invention has a breathable and deodorant mesh, and the other side separated by this sheet can be seen through to human eyes, and is difficult to see through to the eyes of birds. This sheet is used for the cover of a garbage collection site to prevent trash from being scattered, and is used for verandas in apartment buildings and detached houses, steel towers of transmission lines, and mobile phone base station antennas. This is related to a bird protection sheet that can prevent the flying and nesting of pigeons, crows and other birds.

  Various bird damages are seen as problems in our living environment. For example, crow cluttering at a garbage collection site disturbs garbage collection due to the scattering of garbage, resulting in harmful effects such as polluting the surrounding environment and spreading odors. In addition, flying pigeons and crows on the verandas of apartment houses and detached houses and nesting caused problems such as pollution by fouls, bad odors, and noise from crying. Nesting of crows and other birds on power transmission towers Conductive materials such as wire hangers may be used as the material, which may cause short-circuit accidents and ground faults, resulting in economic losses. Various proposals have been made as countermeasures against these problems.

  Garbage littering by crows was not a problem when black trash bags were once used. However, when transparent garbage bags were used for thorough separate collection, the damage caused by crows was greatly increased and became a social problem. This is a problem that arises because the crows can see the food inside with a fluoroscopic bag in order to recognize food mainly visually. To solve this problem, add organic and inorganic pigments to the garbage bag and color it to reduce the transmittance of light at 300 to 600 nm to 50% or less, thereby blocking a part of the visible region of the crow, and food inside. Proposals have been made for methods that prevent identification. (See, for example, Patent Document 1) Most birds including crows and pigeons have a visible region of 320 to 780 nm, and light in the ultraviolet region of 320 to 380 nm is used to identify prey (food) and foreign enemies, It plays a major role in determining important information for birds, such as gender determination. When birds see this garbage bag, even if it can recognize that there is something inside, it can not be recognized as food because it blocks a lot of light in the ultraviolet region, and it has a certain effect on preventing cluttering Raised. However, trash bags are easy to tear, and if you look directly at the contents, such as crows plucking and tearing out of curiosity, you will notice the existence of food, and after that you will know that there is food inside by learning, messy Damage sometimes occurred. In addition, a method of covering the garbage storage area with a dust cover mesh sheet colored in yellow has been proposed (see, for example, Patent Document 2). This method is also expected to disturb the color vision of crows, but although it has the effect of physically blocking the crows with the mesh sheet, it cannot inhibit visual food identification, such as with a heavy stone or a frame. If it is not sufficiently fixed, it was not possible to prevent cluttering. This is considered to be because the light from the ultraviolet region to green (wavelength 320 to 570 nm) was absorbed by being colored yellow. In other words, in the case of a garbage bag that does not have voids, for example, if it is colored yellow using an azo pigment or the like, transmission of light including the ultraviolet region can be prevented and food identification can be prevented. In this way, when it has a void portion, it is colored yellow, so that scattering of light with a wavelength of 320 to 570 nm on the surface of the mesh sheet enriched portion is suppressed, and only light passing through the void portion can be seen. This makes it easier to see the other side of the mesh sheet.

  Various measures have been taken for pigeons flying and nesting on the verandas of multi-family houses and detached houses, such as threatening them with a bird's eye-catching pattern, or removing them with the smell and sound that pigeons don't like. However, all of these often lose their effects once the pigeons get used to them, and the most effective of the measures actually taken is to physically spread the pigeons by spreading a mesh sheet on the outside of the veranda. It was the method of interrupting automatically (for example, refer patent document 3). However, there was a slight gap between the peripheral edge of the mesh sheet and the building, and some time before it entered the pigeon. The pigeon has the habit of moving to the target place after confirming safety from the position where the place can be seen before going to the target place. At this time, you can see the inside covered with the mesh sheet from the confirmation point, and if it is judged to be a safe place, it will try to get in somehow by searching for the gap, so even if it is covered with the mesh sheet, it will completely penetrate It was difficult to prevent. The same applies to the steel tower of the transmission line, and a method of spreading a mesh sheet may be taken to prevent the flying and nesting of pigeons, crows, and other birds. It was difficult to completely block

  If it is blinded with a sheet with no gaps and no transparency, the line of sight of birds can be blocked, and these problems can be solved. However, when this sheet is used for the garbage storage cover, not only does it not be possible for humans to see the interior, but since there is no ventilation, there is a risk that in summer the rot will increase as the internal temperature rises and a bad odor will be generated. is there. In addition, when used for a veranda, the window function of lighting and ventilation is impaired, and when used for a steel tower of a transmission line, it is easily affected by the wind. The seat may be damaged.

  Furthermore, these conventional bird damage countermeasures are not particularly considered in regard to odor countermeasures, and as a garbage storage cover, it has not been possible to prevent the odor of garbage from being diffused around.

  As described above, there has not been proposed a sheet that can prevent the arrival of birds and the spread of garbage by birds and can suppress the diffusion of odors.

JP 2005-200147 A JP 2003-252401 A JP 2002-186404 A

  The present invention prevents garbage from being scattered by crows when used for garbage storage, and is used for verandas of apartment houses and detached houses, steel towers of power transmission lines, etc. It is an object of the present invention to provide a bird-proof sheet that can be prevented, has air permeability and deodorization, and is visible to the human eye.

  In order to solve the above-mentioned problems, the present inventor, in addition to physically blocking the birds with a mesh sheet, makes it difficult for the birds to see the other side of the mesh sheet, thereby preventing the arrival of birds, As a result of diligent investigations, we believe that it is possible to prevent bird damage more effectively. As a result, the mesh sheet used for the cover has an ultraviolet scattering surface and an odor control surface. When scattered, this scattered light is mixed with the ultraviolet rays that have passed through the voids, making it impossible to clearly see the light in the ultraviolet region, and birds can not judge the presence of food and foreign enemies, and birds can fly. It has been found that it can prevent or prevent intrusion into the interior, and can reduce the malodor inside the sheet covered with this sheet and suppress the spread of odor by having an odor control surface. Departure The has been completed.

  That is, the bird-proof sheet of the present invention has a base fabric made of a coarse knitted fabric composed of fiber yarns, and a flexible resin layer formed on both sides of the base fabric, and is 25 to 70%. A flexible mesh sheet having a porosity, wherein one side or the other side of the flexible mesh sheet is selected from at least barium sulfate particles, aluminum oxide particles, magnesium oxide particles, and zirconium oxide particles A flexible resin layer made of a thermoplastic resin composition containing inorganic particles of at least species, and an antifouling resin layer formed from an acrylic resin and / or a fluorine resin on the flexible resin layer An odor-inhibiting surface comprising a flexible resin layer made of a thermoplastic resin composition containing at least a deodorant on the opposite surface side of the flexible mesh sheet. There, with respect to the mass of the flexible resin layer of the ultraviolet light scattering surface, the content of the inorganic particles wherein 10 to 50 wt%.

  In the birdproof sheet of the present invention, it is preferable that the inorganic particles have an average particle diameter of 200 to 1200 nm.

  In the bird-proof sheet of the present invention, the flexible resin layer on the ultraviolet scattering surface side further contains an organic pigment and is colored to lightness (JISZ8721) 2 to 6, and ultraviolet rays (wavelengths) on the ultraviolet scattering surface. 360%) is preferably 60% or more.

  In the birdproof sheet of the present invention, the organic pigment preferably contains one or more selected from a cyan organic pigment and a magenta organic pigment.

  By using the bird-proof sheet of the present invention, in addition to physically blocking the birds, it prevents birds from flying and invading by preventing the birds from judging the presence or absence of food or foreign enemies on the other side of the bird-proof sheet. It can be effectively prevented and the odor can be suppressed. The bird-proof sheet of the present invention can be used in a garbage storage area to prevent trash mess and odor diffusion by crows. In addition, it can be used on the verandas of multi-family houses and detached houses to prevent the flying and nesting of pigeons, crows, and other birds, reduce odors inside, and suppress the invasion of odors from the surrounding environment. . Furthermore, when used for power transmission towers, mobile phone base station antennas, etc., in addition to preventing the arrival of birds and nesting, it can also suppress odors generated by painting work inside the cover with a bird-proof sheet. it can.

The figure which shows an example of the bird-proof sheet | seat of this invention Sectional drawing which shows an example of the bird-proof sheet | seat of this invention Sectional drawing which shows an example of the bird-proof sheet | seat of this invention Sectional drawing which shows the structural example of the bird-proof sheet | seat of this invention

In the bird-proof sheet of the present invention, the coarse knitted fabric can be selected from a woven fabric and a knitted fabric containing warp yarns and weft yarns orthogonally. When using a woven fabric, weaving by inserting wefts orthogonal to the warp arranged in parallel in the length direction, weaving, such as plain weave, twill weave, satin weave, silk weave, woven weave, in parallel The warps and wefts arranged side by side are stacked so as to be orthogonal to each other, and these can be appropriately selected from woven fabrics such as a woven fabric formed by pressing them with the entangled yarn. In the case of using a knitted fabric, a weft insertion tricot knitted fabric is preferably used among the warp knitted knitted fabrics in which yarns warped in the warp direction are entangled with loops. These knitted fabrics are coarse knitted fabrics (porosity of 20 to 85%) each including at least a yarn including warp and weft arranged in parallel with a gap between yarns. Although no particular limitation on the mass of the coarse-like knitted fabric, it is preferred from the viewpoint of handling and durability is 50 to 500 g / ^{m 2,} and more preferably 65~300g / ^{m 2.} There is no particular limitation on the fiber yarn constituting the coarse knitted fabric, and polyester fiber, polyamide fiber, polyethylene fiber, polypropylene fiber, vinylon fiber, aromatic heterocyclic polymer fiber, and other synthetic fibers, cotton, hemp , Natural fibers such as kenaf, semi-synthetic fibers such as acetate, inorganic fibers such as glass fibers, silica fibers, and alumina fibers can be used by mixing one or two or more of these fibers. Any shape of yarn such as multifilament yarn, monofilament yarn, split yarn, tape yarn, and short fiber spun yarn can be used. The fineness of the yarn is preferably 83 to 3333 dtex (decitex: 1.7 to 70 when converted to cotton). If the fineness is thinner than 83 dtex, the durability of the bird-proof sheet may be insufficient. When the fineness exceeds 3333 dtex, the bird's-proof sheet becomes stiff and the handling property may deteriorate. In addition, when the yarn becomes thicker, one unit of the solid portion becomes thicker, and when the porosity is set to 25 to 70%, one unit of the void portion becomes relatively large, and the birds see the other side through the void portion. It becomes easy and it becomes impossible to fully prevent bird damage.

  In the present invention, the thermoplastic resin used for the flexible resin layer includes, for example, soft vinyl chloride resin (soft vinyl chloride resin and semi-rigid vinyl chloride resin in which a plasticizer, a stabilizer, and the like are added to vinyl chloride resin), chloride Vinyl-based copolymer resin, olefin resin, olefin-based copolymer resin, urethane-based copolymer resin, acrylic resin, acrylic-based copolymer resin, vinyl acetate resin, vinyl acetate-based copolymer resin, styrene resin, styrene One type selected from a copolymer resin, a polyester resin, a polyester copolymer resin, a fluorine resin, a fluorine-containing copolymer resin, or two or more types can be used in combination. Examples of the method for forming the flexible resin layer on the coarse knitted fabric include a thermoplastic resin solubilized in an organic solvent, a thermoplastic resin emulsion (latex) emulsion-polymerized in water, or a thermoplastic resin in water. Dipping process (both sides processing to coarse knitted fabric) using water-dispersed resin such as dispersion resin forcibly dispersed and stabilized, soft polyvinyl chloride resin paste sol, uncured thermosetting resin composition liquid, And a coating process (single-sided processing or double-sided processing on a coarse knitted fabric) and the like are exemplified, and for example, a roll coating method is preferable as the inner coating processing.

  The bird seat of the present invention has an ultraviolet scattering surface and an odor suppressing surface, and on the ultraviolet scattering surface side, has an antifouling resin layer described later as an outermost layer, and the antifouling resin layer and the base fabric. In the flexible resin layer formed between, any one kind or two or more kinds of inorganic particles selected from barium sulfate particles, aluminum oxide particles, magnesium oxide particles, and zirconium oxide particles are used. It is contained as 10 to 50% by mass with respect to the mass of the resin layer. These inorganic particles absorb less light in the ultraviolet region of 320 to 380 nm, and are refracted compared to the above-mentioned thermoplastic resins and acrylic resins and fluorine resins forming the antifouling resin layer. The rate is large. Therefore, in the solid part of the ultraviolet ray scattering surface of the mesh sheet formed with the flexible resin layer containing inorganic particles, the light in the ultraviolet region is scattered, and this scattered light is mixed with the ultraviolet ray that has passed through the gap, It is difficult for birds to see the light in the ultraviolet region, and it is impossible to determine the presence or absence of food or foreign enemies, thus preventing flight and entry. In the present invention, inorganic particles whose surface is coated with silica, alumina, silica-alumina, higher fatty acid or the like may be used in order to increase dispersibility in the thermoplastic resin composition.

  In the present invention, the inorganic particles preferably have an average particle size of 10 to 3000 nm, and more preferably 200 to 1200 nm from the viewpoint of increasing light scattering in the ultraviolet region. If the average particle diameter of the inorganic particles is less than 10 nm, the particles are likely to aggregate with each other, the dispersion into the thermoplastic resin cannot be performed well, and the ultraviolet light scattering may be weakened. On the other hand, if the average particle diameter exceeds 3000 nm, when added to the liquid thermoplastic resin composition, it may settle in the liquid and a uniform dispersion may not be obtained. By using inorganic particles having an average particle diameter of 10 to 3000 nm, a uniform flexible resin layer can be obtained. In particular, when inorganic particles having a particle diameter of 200 to 1200 nm are used, scattering of light in the ultraviolet region increases, and birds fly. Intrusion can be prevented more effectively. The particle diameter can be measured with a laser diffraction / scattering particle size distribution measuring apparatus (for example, LA300 manufactured by Horiba, Ltd.). If all of the inorganic particles are embedded in the flexible resin layer, sufficient UV scattering may not be obtained due to UV absorption by the resin and other additives, and at least some of the particles are exposed on the surface. It is preferable that Therefore, the content of the inorganic particles needs to be 10 to 50% by mass with respect to the mass of the flexible resin layer including the inorganic particles. When the content of the inorganic particles is less than 10% by mass, the exposure of the inorganic particles on the surface of the flexible resin layer is small, the light in the ultraviolet region is not sufficiently scattered, and the flying and invasion of birds are sufficiently prevented. May become impossible. If it exceeds 50% by mass, the flexible resin layer becomes stiff, the handleability of the bird's-eye sheet becomes worse, the resin layer becomes brittle, and the bird's-sheet's wear resistance and bending resistance may be inferior. is there.

  In the present invention, the flexible resin layer containing at least the deodorant and the thermoplastic resin forms the outermost layer on the odor suppression surface side. Deodorizers contained in the flexible resin layer include activated carbon, impregnated activated carbon, shiratake charcoal, activated clay, zeolite, bentonite, sepiolite, shirasu, silica, silica-magnesia, activated alumina, molecular sieve, zinc oxide, etc. Oxidative / reducing substances having chemical reactivity, such as inorganic porous materials with dynamic adsorptive properties, tourmaline (tourmaline ores), metal phthalocyanine complexes, metal phthalocyanine complexes tetracarboxylic acids, and inorganic porous materials One or two or more composite deodorants carrying a reducing substance can be selected and used. The bird-proof sheet of the present invention has a flexible resin layer containing a deodorant in the outermost layer on the odor-suppressing surface side, thereby reducing the spread of bad odors to the periphery when used as a cover for a garbage storage area. In addition, when used on a veranda, it can reduce odors that are trapped in the interior and suppress the intrusion of odors from the surrounding environment, and can be used for power transmission towers and mobile phone base station antennas. It is possible to suppress the odor generated by the painting work in the inside covered with the bird-proof sheet and reduce the burden on the worker and the surrounding environment.

  In this invention, it is preferable that content of a deodorizer is 1-30 mass% with respect to the mass of the flexible resin layer containing this. If the content of the deodorant is less than 1% by mass, the deodorizing effect of the obtained sheet may be insufficient, and if it exceeds 30% by mass, the flexible resin layer becomes stiff and birdproof. The handleability of the sheet is deteriorated, the resin layer becomes brittle, and the bird's-proof sheet may be inferior in wear resistance and flex resistance. In the present invention, when the flexible resin layer includes both the deodorant and the above-described inorganic particles, the combined content of the deodorant and the inorganic particles is based on the mass of the flexible resin layer including these. It is preferable that it is 11-50 mass%.

  The flexible resin layer of the present invention contains an organic pigment in addition to the above-mentioned inorganic pigment and deodorant, is colored to lightness (JISZ8721) 2 to 6, and has ultraviolet rays (wavelength 360 nm) on the ultraviolet scattering surface. ) Is preferably 60% or more. Since the flexible resin layer is colored with a lightness of 2 to 6, the scattering of light of 380 to 780 nm, which is a human visible region, is suppressed. Easy to see through. If the lightness is less than 2, humans will have higher transparency when viewed, but it is necessary to add a large amount of organic pigment to color until the lightness is less than 2, and the organic pigment absorbs ultraviolet rays. It becomes large, the scattering of ultraviolet rays is hindered, and the bird-proofing property may be impaired. If the brightness exceeds 6, the transparency when viewed by a human may be hardly improved. The organic pigment used in the present invention is not particularly limited. For example, isoindolinone pigment, quinophthalone pigment, isoindoline pigment, anthraquinone pigment, xanthene pigment, diketopyrrolopyrrole pigment, perylene pigment, perinone pigment, quinacridone pigment, indigoid pigment Phthalocyanine pigments (metal phthalocyanine pigments, chlorinated metal phthalocyanine pigments, metal-free phthalocyanine pigments), dioxazine pigments, and other polycyclic pigments, monoazo pigments, disazo pigments, azo pigments such as condensed disazo pigments, and lake pigments One or more of these organic pigments can be selected and used. However, when one of these organic pigments is used alone, it is a dioxazine pigment, quinacridone pigment, perylene pigment, indigoid pigment, anthraquinone pigment having a cyan (purple, blue) or magenta (red) hue. It is preferable to use one selected from xanthene pigments, phthalocyanine pigments (metal phthalocyanine pigments, chlorinated metal phthalocyanine pigments, metal-free phthalocyanine pigments), azomethine pigments, and the like. Since these organic pigments having cyan and magenta hues absorb relatively little light in the ultraviolet region, they can be colored without hindering the scattering of ultraviolet rays. On the other hand, when a pigment having a yellow hue is added alone so that the brightness is 6 or less, the absorption of light in the ultraviolet region is increased, and the scattering of ultraviolet rays is hindered and the bird-proofing property may be impaired. Not suitable for use alone. When two or more pigments are used in combination, it is preferable to combine cyan and magenta pigments. With this combination, lightness of 2 to 6 can be obtained with a relatively small amount of pigment added, and ultraviolet rays can be obtained. The scattering of is not hindered so much. Furthermore, when a yellow pigment is used in combination with a cyan and magenta pigment, a dark gray hue with low lightness can be obtained, and a small amount of yellow pigment can be added. The transparency when viewed on the screen is greatly improved, and the scattering of ultraviolet rays is not hindered.

  In the present invention, the amount of the organic pigment added to the flexible resin layer is not particularly limited, and the lightness (JIS Z8721) of the flexible resin layer is 2 to 6 depending on the colorability of each pigment. The addition amount may be adjusted as appropriate, but it is preferably added so as to be 0.05 to 5% by mass with respect to the mass of the flexible resin layer containing the pigment. If the addition amount is less than 0.05%, the brightness may not be 6 or less. If the addition amount exceeds 5% by mass, the absorption of light in the ultraviolet region increases, and the scattering of ultraviolet rays is hindered and the birdproofness is impaired. There is a thing.

  In the present invention, the flexible resin layer may include a plasticizer, a stabilizer, a flame retardant, an ultraviolet absorber, an antioxidant, a filler, an antibacterial agent, an antifungal agent, as long as the object of the present invention is not impaired. An additive such as an agent, a compatibilizing agent, an antistatic agent, a wetting agent, a dispersing agent, an adhesive, and a crosslinking agent may be included.

In the present invention, the antifouling resin layer forms the outermost layer on the ultraviolet scattering surface side. In the antifouling resin layer of the present invention, one or more kinds selected from acrylic resins and fluorine resins are used. These resins prevent dirt from adhering to the UV scattering surface, and do not interfere with UV scattering because they absorb less light in the UV region, and are also excellent in weather resistance. Can be maintained for a long time. The acrylic resin and fluorine resin used for the antifouling resin layer are not particularly limited. For example, the acrylic resin includes (meth) acrylic acid such as methyl (meth) acrylate and ethyl (meth) acrylate. Those produced using esters as the main constituent monomers can be used. These homopolymers and monomers copolymerizable therewith (for example, unsaturated carboxylic acids such as (meth) acrylic acid and maleic acid, and the like) Esters, vinyl acetates such as vinyl acetate and vinyl propionate, vinyl cyanides such as (meth) acrylonitrile, vinyl ethers such as methyl vinyl ether, unsaturated compounds such as (meth) acrylamide and N-methylol (meth) acrylamide Amides, α-olefins such as ethylene and propylene, vinyl chloride, vinyl fluoride Halogen-containing α-, β-unsaturated monomers such as vinylidene fluoride, glycidyl esters such as glycidyl (meth) acrylate and glycidyl ethacrylate, glycidyl ethers such as allyl glycidyl ether, and perfluoroalkyl (meth) acrylates And copolymers with hydroxyalkyl (meth) acrylates such as hydroxyethyl (meth) acrylate, polysiloxane group-containing (meth) acrylates, and the like. The fluororesin is selected from the group consisting of (a) a C 1-6 perfluoroalkyl group, or —C ₃ F ₆ O—, —C ₂ F ₄ O—, and —CF ₂ O—. A polymerizable monomer having a fluoroether group having at least one repeating unit and having a carbon-carbon double bond (for example, perfluoroalkyl acrylate, perfluoroalkyl methacrylate, perfluoropolyether acrylate, etc.), (B) a polymerizable monomer having a C 1-6 perfluoroalkenyl group, (c) a fluorine-containing silsesquioxane monomer having a polymerizable group, (d) a vinylidene fluoride monomer, , Homopolymers of any of these, copolymers containing two or more of these monomers, or copolymerizable with these monomers and having no fluorine atoms A copolymer with a polymerizable monomer (for example, a polymerizable monomer having a carbon-carbon double bond such as alkyl acrylate, vinyl ester, vinyl ether, α-olefin, chlorine-containing unsaturated monomer, etc.); Examples thereof include silicone-modified fluororesins in which polysiloxane is graft-polymerized on these fluororesin main chains.

  In the present invention, the method for forming the antifouling resin layer is not particularly limited, but a resin solution comprising at least one or a mixture of two or more acrylic resins or fluorine resins solubilized in water or a solvent, Or the coating film formed by surface-applying the resin dispersion liquid which disperse | distributed acrylic resin or fluorine resin in water or a solvent by the gravure coating method, the rotary screen coating method, the kiss coating method etc. is illustrated.

  In the present invention, these coating films may contain hydrophilic amorphous silica fine particles or colloidal silica. By including these hydrophilic particles in the antifouling resin layer, even when dirt adheres to the surface of the antifouling resin layer, the dirt is washed away naturally during rainfall. When these hydrophilic particles are included in the antifouling resin layer, it is preferably included in a proportion of 5 to 70% by mass, more preferably 10 to 60% by mass with respect to the total mass of the antifouling resin layer. . If the amount is less than 5% by mass, the effect of adding hydrophilic particles may not be sufficiently obtained. If the amount exceeds 70% by mass, the antifouling resin layer becomes brittle and can be handled as a dust storage cover. Repetitive) and flapping by wind when it is spread on a veranda or a power transmission tower.

  In addition to the antifouling resin layer of the present invention, a crosslinking agent, adhesive, antibacterial agent, antifungal agent, compatibilizer, antistatic agent, wetting agent, dispersant, etc. May be included. Further, in the present invention, an adhesive layer for imparting adhesiveness and a flexible resin layer are included between the antifouling resin layer and the flexible resin layer on the ultraviolet light scattering surface side as necessary. An additive migration preventing layer for preventing the additive to migrate to the antifouling resin layer may be formed.

  Here, although the bird-proof sheet | seat of this invention is demonstrated using figures, this invention is not limited to these. FIG. 1 is a view showing an example of a birdproof sheet (1) of the present invention. The area A surrounded by the broken line in FIG. 1 is the smallest unit of the void portion (1-1) and the solid portion (1-2) of the bird-proof sheet. In the present invention, the porosity of the bird-proof sheet is It represents the ratio of the area (1-1) of the void portion to the sum of the area of the void portion (1-1) and the area of the solid portion (1-2) (area of the region A). In this invention, it is preferable that the porosity of a bird-proof sheet is 25 to 70%, and it is more preferable that it is 40 to 65%. If the porosity of the bird's-proof sheet is less than 25%, the transparency when viewed by humans is impaired, and it is difficult to check the interior when used as a cover for a garbage storage area. If it is used on a veranda, it may be inferior in daylighting and ventilation, resulting in a loss of habitability, and the view may be blocked, giving the occupant a feeling of pressure. In addition, when used in a steel tower of a transmission line or a mobile phone base station antenna, when working inside a bird's-eye-covered sheet, the safety work may be hindered if the surroundings cannot be seen. In addition, when used in a transmission line tower, if the porosity is low, it is easily affected by the wind, and in strong winds, the sheet rubs the wind and shakes the tower, or the wind damages the sheet and winds around the transmission line. May occur. On the other hand, when the porosity of the bird-proof sheet exceeds 70%, it becomes easier for birds to see the other side through the gap, and it may not be possible to sufficiently prevent bird damage, and the enriched portion of the odor control surface is reduced. Odor may pass through the voids, making it impossible to suppress odor diffusion.

  FIG. 2 is a cross-sectional view showing an example of the configuration of the bird-proof sheet of the present invention, and is a view showing a cross-section of the B-B ′ portion in FIG. 1. 2 has a base fabric (2) made of a coarse knitted fabric, and a flexible resin layer (3-1) containing inorganic particles and a deodorant on both sides, and one surface side. The antifouling resin layer (4) is formed only on the flexible resin layer. In FIG. 2, since the flexible resin layer (3-1) formed on both surfaces of the base fabric contains both inorganic particles and a deodorant, the inorganic particles (and deodorant on one surface side). An ultraviolet scattering surface is formed by the flexible resin layer (3-1) containing the agent and the antifouling resin layer (4) formed on the flexible resin layer (3-1). On one surface side, the odor suppressing surface is formed by including the flexible resin layer (3-1) containing the deodorant (inorganic particles) in the outermost layer.

  FIG. 3 is a view showing a cross section of the C-C ′ portion in FIG. 1. The bird-proof sheet of the present invention has an ultraviolet scattering surface and an odor suppressing surface, and ultraviolet rays are scattered in many directions on the surface of the solid portion (1-2) on the ultraviolet scattering surface side (scattered ultraviolet rays represented by broken line arrows). ). This scattered ultraviolet ray is mixed with the ultraviolet ray that has passed through the gap (the transmitted ultraviolet ray indicated by the arrow in practice), so that birds cannot clearly see the light in the ultraviolet region. Birds have the habit of confirming the presence of food and the presence of foreign enemies from where they can see the destination before flying to the destination, and light in the ultraviolet region plays an important role in identifying these. Therefore, if the light in the ultraviolet region cannot be clearly seen, it is impossible to determine the presence of food and the presence of external enemies, and thus it is possible to prevent birds from flying in and out.

  As for the bird-proof sheet | seat of this invention, one surface side is an ultraviolet-ray scattering surface, and the other surface side is an odor suppression surface. In the present invention, the ultraviolet scattering surface has a flexible resin layer containing at least inorganic particles and an antifouling resin layer (4) formed on the flexible resin layer. The outermost layer is an antifouling resin layer (4). The flexible resin layer containing at least inorganic particles on the ultraviolet scattering surface side may be directly formed on the base fabric, or may be laminated via another flexible resin layer. Moreover, in this invention, the odor suppression surface has the flexible resin layer containing a deodorizer at least in the outermost layer. The flexible resin layer containing at least the deodorant on the odor suppression surface side may be formed directly on the base fabric, or may be laminated via another flexible resin layer. In FIG. 4, the example of a structure of the ultraviolet-ray diffusion surface and odor suppression surface in the bird-proof sheet of this invention is shown. FIG. 4 is a diagram showing a cross-section of the DD ′ portion in FIG. 1, and the fiber yarn (2), the flexible resin layer (3), and the antifouling resin layer constituting the base fabric. (4) is a schematic diagram of the layer structure.

  FIG. 4-a shows the same structure as FIG. 2, and the entire circumference of the fiber yarn (2) constituting the base fabric includes a flexible resin layer (3) containing inorganic particles and a deodorant. 1) and has an antifouling resin layer (4) formed only on the flexible resin layer on one surface side.

  FIG. 4-b is an example showing another configuration of the bird-proof sheet of the present invention, in which the entire circumferential surface of the fiber yarn (2) constituting the base fabric is a flexible resin layer containing a deodorant ( 3-2), a flexible resin layer (3-3) containing inorganic particles is formed on one surface thereof, and only on the flexible resin layer (3-3), a protective layer is formed. A dirty resin layer (4) is formed. That is, the side on which the antifouling resin layer is formed has an antifouling resin layer (4) and a flexible resin layer (3-3) containing inorganic particles in order from the outermost layer, and ultraviolet scattering. On the other side, the flexible resin layer (3-2) containing a deodorant serves as the outermost layer to form an odor suppressing surface.

  In the example of FIG. 4-c, the entire circumferential surface of the fiber yarn (2) constituting the base fabric is covered with a flexible resin layer (3-3) containing inorganic particles, on one surface thereof. A flexible resin layer (3-2) containing a deodorant and a thermoplastic resin is formed, and an antifouling resin layer (4) is formed on the flexible resin layer (3-3) on the opposite side. Has been. That is, the side on which the antifouling resin layer is formed has an antifouling resin layer (4) and a flexible resin layer (3-3) containing inorganic particles in order from the outermost layer, and ultraviolet scattering. A surface is formed, and on the other side, a flexible resin layer (3-2) containing a deodorant is the outermost layer to form an odor control surface.

  In the example of FIG. 4-d, one side of the fiber yarn (2) constituting the base fabric is covered with a flexible resin layer (3-2) containing a deodorant, and the other side is inorganic particles. The antifouling resin layer (4) is formed only on the flexible resin layer (3-3). That is, the side on which the antifouling resin layer (4) is formed has an antifouling resin layer (4) and a flexible resin layer (3-3) containing inorganic particles in order from the outermost layer. Thus, an ultraviolet scattering surface is formed, and on the other side, the flexible resin layer (3-2) containing a deodorant is the outermost layer to form an odor suppressing surface.

  In the present invention, the flexible resin layer colored to lightness (JISZ8721) 2 to 6 by adding an organic pigment is the ultraviolet scattering surface side (flexible resin layer 3-1 in FIG. 4-a, FIGS. 4-b to d). In the case of the flexible resin layer 3-3), when the human sees from the ultraviolet light scattering surface side, the transparency is improved, and if used as a cover for the garbage storage area, is the garbage properly separated from the outside? If it is used for a power transmission tower or a mobile phone base station antenna, it will be easier to check the situation inside the bird's-eye sheet when viewed from the outside. On the other hand, when the colored flexible resin layer is the odor suppressing surface side (flexible resin layer 3-1 in FIG. 4-a, flexible resin layer 3-2 in FIGS. 4-b to d), Visibility when viewed from the odor control surface side is improved, and if used on a veranda, the visibility is improved and the feeling of pressure felt by residents is reduced, and if used on a power line tower or mobile phone base station antenna, etc. In the case of working inside the bird-proof sheet, it is possible to see the periphery and to work safely.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated concretely, this invention is not limited to these.

In Examples and Comparative Examples, the following evaluation was performed.
(1) Ultraviolet ray (wavelength 360 nm) reflectivity on ultraviolet scattering surface A composition in which a flexible resin layer on the ultraviolet scattering surface side is formed on one surface of a polyester film having a thickness of 100 μm in Examples and Comparative Examples. A 0.2 mm thick resin layer was formed, and an antifouling resin layer was further formed on the outermost layer to obtain a sample for evaluating ultraviolet reflectance. With respect to the surface of the antifouling resin layer side of this sample, the ultraviolet reflectance at a wavelength of 360 nm was measured using a spectroscopic color meter CM-3600d with an integrating sphere (manufactured by Konica Minolta Co., Ltd.). Measurements were taken for each of the initial and outdoor exposure (installed in Soka City, Saitama Prefecture at a tilt angle of 30 degrees toward the south) one year later.
(2) Birdproof test environment: using an aluminum pipe with an outer diameter of 40 mm, the width and depth are 1 m and the height is 1.5.
A frame of m was prepared, and the bird-proof sheets prepared in Examples and Comparative Examples were fixed to the frame with the ultraviolet scattering surface facing outside, and a cage with the upper and side portions covered with the bird-proof sheet was prepared.
At this time, the inner side of the side surface portion was not fixed to a height of 20 cm, and crows, pigeons, and the like were allowed to enter. However, 100g weights were attached to the left and right lower ends of the unfixed part so that they would not be turned up by the wind.
This cage was installed on the rooftop (concrete floor surface) of a three-story building (Soka City, Saitama Prefecture) with no tall buildings in the surrounding area, with the surface where the lower part of the bird-proof seat was not fixed facing south.
It should be noted that the rooftop floor surface within 2m around this cage was in a state of nothing including the rooftop railings.
Test: A table with a width, depth and height of 30 cm each was prepared and placed in the center of the cage. On the table, a plate with 20 pieces of pig fat with a mass of 10 g as a bait and 100 g of bread ears were placed.
I placed the dish on it. Next, 1 unit inside the cage, 1 in a position where the surroundings of the cage can be monitored
A stand and a camera were installed, and from 5 am to 7 pm, the arrival of birds and intrusion into the cage were monitored and evaluated as follows.
1: No more than 5 birds flying within 2m around the cage, no entry into the cage 2: Birds flying within 2m around the cage exceeded 5 birds,
No intrusion 3: Birds invaded inside the cage Note that the test was conducted at the initial stage (immediately after the production of the bird seat), and the same bird seat was exposed outdoors for one year (in Soka City, Saitama Prefecture). After setting up at 30 degrees)
The day was selected when the weather was fine and no wind of 10m / s or more was blown. In addition, only crows and pigeons were counted for the number of flights.
(3) Perspective evaluation by humans Using MS Gothic font on white copy paper of A4 size, 100m long
As an identification sample printed in black with a size of m and a width of 80 mm, two characters of “en” and “times” were printed side by side. Next, using the bird-proof sheets prepared in the examples and comparative examples, a screen with a height of 2 m and a width of 3 m was created, and a person (observer) was placed at a position 1 m away from one side. Next, place the identification sample vertically on the opposite side of the screen from the observer at the same height as the observer's line of sight (1.6m from the ground), and change the distance between the bird-proof sheet and the identification sample. ”And“ times ”were measured to measure the distance, and evaluated as follows. This evaluation was performed for each of the case where the ultraviolet scattering surface was directed to the observer side and the case where the odor suppression surface was directed.
It is identifiable at 1: 1 m or more and has excellent transparency, but it cannot be identified at 2: 1 m, but it can be identified beyond 0.5 m and has transparency. 4) Odor control a) Put a 10cm x 10cm test sheet into a 5L Tedlar (registered trademark) bag, inject 3L of ammonia gas adjusted to a concentration of 10ppm, and detect the gas concentration after 2 hours. Measured with
b) Put a 10 cm x 10 cm test sheet into a 5 L Tedlar (registered trademark) bag and inject 3 L of methyl mercaptan gas adjusted to a concentration of 10 ppm.
The gas concentration after 2 hours was measured with a detector tube.
c) A 10 cm × 10 cm size test sheet was placed in a 5 L Tedlar (registered trademark) bag, 3 L of formaldehyde gas adjusted to a concentration of 10 ppm was injected, and the gas concentration after 2 hours was measured with a detector tube.
(5) Lightness The lightness of each of the anti-light scattering surfaces and odor control surfaces of the bird-proof sheets prepared in the examples and comparative examples was determined according to JISZ8721.6 (2) “Method determined by direct comparison with standard color chart”. evaluated. (Color comparison at the booth by artificial daylight D65 lighting defined in JISZ8723.6.3)

[Example 1]
<Base fabric>
A coarse woven fabric (mojiri woven) having the following structure made of polyester multifilament yarn was used as the base fabric 1.
611 dtex / 2 x 1111 dtex
6.8 × 6.8 (lines / inch) Mass 70 g / m ²
<Formation of flexible resin layer and antifouling resin layer>
After immersing the base fabric 1 in the processing liquid of the following composition 1, squeeze it with a mangle, heat it at 180 ° C. for 2 minutes, and apply inorganic particles and deodorant to both surfaces (the entire surface of the fiber yarn) of the base fabric 1. The sheet | seat in which the flexible resin layer (3-1) included together was formed was obtained. The adhesion amount of the flexible resin layer (3-1) was 100 g / m ² . Next, after applying a processing liquid of the following formulation 2 on one surface of the sheet so as to be 10 g / m ² by a gravure coating method, the coating liquid is dried at 120 ° C. for 1 minute and antifouling at ² g / m ² . The resin layer (4) was formed, and the bird-proof sheet of Example 1 was obtained. The bird-proof sheet of Example 1 has a white appearance (lightness 8.5) on both the side on which the antifouling resin layer is formed (ultraviolet scattering surface) and the side on which the antifouling resin layer is not formed (odor control surface). The mesh sheet had a porosity of 65%. Table 1 shows the results of various evaluations of this birdproof sheet.
(Formulation 1) Thermoplastic resin composition containing both inorganic particles and deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 Part by mass Ba-Zn composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole ultraviolet absorber 0.3 part by mass Barium sulfate (inorganic particles) Average particle size 300 nm 30 parts by mass (silica -Alumina surface treatment)
Shiratake charcoal (deodorant) 10 parts by weight Iron tourmaline: NaFe ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant)
5 parts by mass * 13.5% by mass of inorganic particles and 6.7% by mass of deodorant with respect to the mass of the flexible resin layer (3-1)

(Composition 2) Composition for antifouling resin layer 20 parts by mass of PMMA Trademark: Acryprene pellet HBS001 (manufactured by Mitsubishi Rayon Co., Ltd.)
Toluene-MEK (50/50 weight ratio) (solvent) 80 parts by mass

[Example 2]
<Base fabric>
A coarse woven fabric (plain weave) having the following structure made of polyester multifilament yarn was used as the base fabric 2.
555 dtex × 555 dtex
19 × 20 (lines / inch) Mass 70 g / m ²
<Formation of coating resin layer and antifouling resin layer>
The base fabric 2 is dipped in the processing liquid of the following composition 3, then squeezed with a mangle, heated at 180 ° C. for 2 minutes, and inorganic particles and deodorant are applied to both sides (the entire surface of the fiber yarn) of the base fabric 2. The sheet | seat in which the flexible resin layer (3-1) containing was formed was obtained. The adhesion amount of the flexible resin layer (3-1) was 100 g / m ² . Next, on one surface of this sheet, a processing liquid of the following formulation 4 was applied by a gravure coating method so as to be 25 g / m ^2, and then dried at 120 ° C. for 1 minute to obtain a 2.5 g / m ² protective coating. A fouling resin layer (4) was formed, and the bird-proof sheet of Example 2 was obtained. The bird-proof sheet of Example 2 has a white appearance (brightness of 8.5) on both the side on which the antifouling resin layer was formed (ultraviolet scattering surface) and the side on which the antifouling resin layer was not formed (odor control surface). The mesh sheet had a porosity of 41%. Table 1 shows the results of various evaluations of this birdproof sheet.
(Formulation 3) Thermoplastic resin composition containing both inorganic particles and deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 Part by mass Ba-Zn composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole ultraviolet absorber 0.3 parts by mass Magnesium oxide (inorganic particles) Particle size 500 nm 30 parts by mass Shiratake charcoal ( Deodorant) 10 parts by weight Iron tourmaline: NaFe ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant)
5 parts by mass * 13.5% by mass of inorganic particles and 6.7% by mass of deodorant with respect to the mass of the flexible resin layer (3-1)

(Formulation 4) Composition for antifouling resin layer ZX-007-C (solid content 35%) 30 parts by mass Silicone-modified fluororesin (manufactured by T & K Toka Co., Ltd.)
Xylene / butyl acetate (50/50 weight ratio) (solvent) 70 parts by mass

[Example 3]
<Base fabric>
A coarse woven fabric (mojiri woven) having the following structure made of polyester multifilament yarn was used as the base fabric 3.
3333 dtex / 2 x 3333 dtex / 2
5 × 5 (lines / inch) Mass 275 g / m ²
<Formation of coating resin layer and antifouling resin layer>
The base fabric 3 is immersed in a processing solution of the following composition 5 and then squeezed with a mangle and heated at 180 ° C. for 2 minutes, so that both sides of the base fabric 3 (the entire surface of the fiber yarn) include a deodorant. The conductive resin layer (3-2) was formed. The adhesion amount of the flexible resin layer (3-2) was 160 g / m ² . Next, on one surface side of the flexible resin layer (3-2), a processing liquid of the following formulation 6 is coated by a roll coating method, heated at 180 ° C. for 2 minutes, and an inorganic content of 110 g / m ² . A flexible resin layer (3-3) containing particles is formed, and a processing liquid of the following formulation 7 is applied onto the flexible resin layer (3-3) by gravure coating so as to be 20 g / m ² . Then, it was dried at 120 ° C. for 1 minute to form a 2 g / m ² antifouling resin layer (4), whereby the birdproof sheet of Example 3 was obtained. The bird-proof sheet of Example 3 had a white appearance with a lightness of 9 on the side on which the antifouling resin layer was formed (ultraviolet scattering surface), and the side on which the antifouling resin layer was not formed (odor control surface) had a lightness of 8 And a mesh sheet with a porosity of 55%. Table 1 shows the results of various evaluations of this birdproof sheet. Table 1 shows the results of various evaluations of this birdproof sheet.
(Formulation 5) Thermoplastic resin composition containing deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 parts by mass Ba- Zn-based composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole-based UV absorber 0.3 parts by mass Shiratake charcoal (deodorant) 10 parts by mass Iron tourmaline: NaFe ₃ Al ₆ ( BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant)
5 parts by mass * Deodorant 7.7% by mass relative to the mass of the flexible resin layer (3-2)

(Formulation 6) Thermoplastic resin composition containing inorganic particles Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 parts by mass Ba-Zn Composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole UV absorber 0.3 part by mass Aluminum oxide (inorganic particles) Average particle size 1000 nm 30 parts by mass * Flexible resin layer ( 3-3) inorganic particles 14.4% by mass

(Formulation 7) Antifouling resin layer composition Vinylidene fluoride polymer resin 8 parts by mass Hexamethylene diisocyanate 0.5 part by mass Wet process silica fine particles 2 parts by mass (average particle size: 2.7 μm, BET specific surface area: 275 m ² / g)
90 parts by mass of methyl ethyl ketone (solvent)

[Example 4]
Instead of Formulation 3, in the same manner as in Example 2 except that the processing liquid of Formulation 8 below is used, both sides (the entire surface of the fiber yarn) of the base fabric 2 contain inorganic particles, a deodorant, and an organic pigment. A sheet on which the flexible resin layer (3-1) was formed was obtained. The adhesion amount of the flexible resin layer (3-1) was 120 g / m ² . Next, the processing liquid of Formulation 4 was applied on one surface of this sheet by a gravure coating method to 25 g / m ^2, and then dried at 120 ° C. for 1 minute to give 2.5 g / m ² of antifouling. The resin layer (4) was formed, and the bird-proof sheet of Example 4 was obtained. The bird-proof sheet of Example 4 has an amber (lightness 5) appearance on both the side on which the antifouling resin layer is formed (ultraviolet scattering surface) and the side on which the antifouling resin layer is not formed (odor control surface). The mesh sheet had a porosity of 41%. Table 1 shows the results of various evaluations of this birdproof sheet.
(Formulation 8) Thermoplastic resin composition containing both inorganic particles and deodorant (containing organic pigment)
Emulsion polymerization polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 80 parts by mass Epoxidized soybean oil (stabilizer) 2 parts by mass Ba-Zn composite stabilizer 1.5 parts by mass Antimony trioxide ( Flame retardant) 10 parts by mass Benzotriazole UV absorber 0.3 part by mass Zirconium oxide (inorganic particles) Average particle size 600 nm 60 parts by mass Shiratake charcoal (deodorant) 10 parts by mass Iron tourmaline: NaFe ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant) 5 parts by mass Magenta organic pigment 0.8 parts by mass
CI Pigment Red 209 (Quinacridone)
Cyan organic pigment 1.0 part by mass
CI Pigment Blue 15: 3 (phthalocyanine series)
* 22.2% by mass of inorganic particles and 5.5% by mass of deodorant with respect to the mass of the flexible resin layer (3-1)
0.7% by mass of organic pigment with respect to the mass of the flexible resin layer (3-1)

[Example 5]
<Formation of coating resin layer and antifouling resin layer>
One surface of the base fabric 3 was coated with a processing liquid of the following formulation 9 by a roll coating method, and heated at 180 ° C. for 2 minutes to form a flexible resin layer (3-3) containing inorganic particles. The adhesion amount of the flexible resin layer (3-3) was 150 g / m ² . Next, the other surface side of the base fabric 3 is coated with a processing liquid having the following composition 10 by roll coating, heated at 180 ° C. for 2 minutes, and a flexible resin layer containing a deodorant (3-2 ) Was formed. The adhesion amount of the flexible resin layer (3-2) was 120 g / m ² . Furthermore, after applying the processing liquid of Formulation 7 to 20 g / m ² on the flexible resin layer (3-3) by a gravure coating method, the coating liquid is dried at 120 ° C. for 1 minute to prevent ² g / m ² . A fouling resin layer (4) was formed to obtain a bird-proof sheet of Example 5. The side of the antifouling sheet of Example 5 on which the antifouling resin layer was formed (ultraviolet scattering surface) had a dark gray appearance with a brightness of 3.5, and the side on which the antifouling resin layer was not formed (odor control surface) Was a light gray appearance with a lightness of 8, and was a mesh sheet with a porosity of 55%. Table 1 shows the results of various evaluations of this birdproof sheet.
(Formulation 9) Thermoplastic resin composition containing inorganic particles (containing organic pigment)
Emulsion polymerization polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 80 parts by mass Epoxidized soybean oil (stabilizer) 2 parts by mass Ba-Zn composite stabilizer 1.5 parts by mass Antimony trioxide ( Flame retardant) 10 parts by mass Benzotriazole UV absorber 0.3 parts by mass Zirconium oxide (inorganic particles) Average particle size 600 nm 30 parts by mass Aluminum oxide (inorganic particles) Average particle size 1000 nm 30 parts by mass Magenta organic pigment 0.8 Parts by mass
CI Pigment Red 209 (Quinacridone)
Cyan organic pigment 1.0 part by mass
CI Pigment Blue 15: 3 (phthalocyanine series)
0.6 parts by weight of yellow organic pigment
CI Pigment Yellow 155 (Condensed Disazo)
* 23.4% by mass of inorganic particles based on the mass of the flexible resin layer (3-3)
0.9% by mass of organic pigment based on the mass of the flexible resin layer (3-3)

(Formulation 10) Thermoplastic resin composition containing deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 parts by mass Ba- Zn-based composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole-based UV absorber 0.3 parts by mass Shiratake charcoal (deodorant) 20 parts by mass Iron tourmaline: NaFe ₃ Al ₆ ( BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant)
5 parts by mass * 12.3% by mass of deodorant with respect to the mass of the flexible resin layer (3-2)

  The bird-proof sheets of Examples 1 to 5 all satisfy the requirements of the present invention, and while showing the bird-proof property both after the initial and one-year exposure, a person can see through the sheet, Since it also has odor control properties, it is a sheet that can be suitably used as a cover for garbage storage, and as a bird cover such as a veranda, a transmission line tower, and a mobile phone base station antenna. In the bird's-proof sheet of Example 1, only 7 crows and pigeons came together within 2m around the cage in the initial bird-proof test, but the inside of the cage was shown, but There was no intrusion. One year after the exposure, the number of flights within 2m around the cage was 12 birds, including crows and pigeons. The bird-proof sheet of Example 1 had a high void ratio of 65%, and in the evaluation of transparency by humans, it was possible to identify over 1 m, and the transparency was excellent. Birds can also see light in the visible region of humans, so the inside of the cage should be visible, but the UV scattering in the solid part is mixed with the ultraviolet light that has passed through the gap, and light in the ultraviolet region It is probable that the inside of the cage was not penetrated because it was not possible to clearly see the image, and it was impossible to determine whether the object placed inside was food. The bird-proof sheets of Examples 2 and 3 have a porosity of 41% and 55%, which is lower than that of Example 1. Therefore, although human transparency was somewhat inferior, the bird-proof sheet at the initial stage and after one year of exposure In the test, the number of birds flying was 5 or less, showing excellent birdproofness. The bird-proof sheet of Example 4 has the same porosity of 41% as Example 2, but the flexible resin layer (3-1) containing the inorganic particles and the deodorant contains the organic pigment, and the brightness is 5. The transparency by humans was improved by being colored. On the other hand, with regard to bird-proofing, the number of flying crows and pigeons exceeded 5 in both the initial stage and one year after exposure, but there was no intrusion inside. The organic pigments used for coloring in Formulation 8 are cyan pigments and magenta pigments that absorb less in the ultraviolet region, and the content of inorganic particles is 22.2% by mass. Since there were more, the reflectivity of ultraviolet rays (360 nm) on the ultraviolet scattering surface was 66% at the initial stage and 64% after exposure for one year, showing the same value as in Examples 1 to 3 in which no organic pigment was added. It is considered that the UV scattering was sufficiently performed. Example 5 has the same porosity of 55% as Example 3, but the flexible resin layer (3-1) containing inorganic particles and deodorant contains an organic pigment and is colored to a lightness of 3.5. As a result, transparency by humans was improved. On the other hand, with regard to bird-proofing, the number of flying crows and pigeons exceeded 5 in both the initial stage and one year after exposure, but there was no intrusion inside. The cyan pigment and the magenta pigment used for coloring in Formulation 9 have low absorption in the ultraviolet region, and the yellow pigment having absorption in the ultraviolet region is included, but the content of inorganic particles is 23. 4% by mass, more than Examples 1 to 3, so that the reflectivity of ultraviolet rays (360 nm) on the ultraviolet scattering surface is 60% or more after initial exposure and after one year exposure, and sufficient UV scattering is performed in the solid part. It is thought that. Of these, Example 1 and Example 4, which were excellent in transparency by humans from the odor-suppressing side, reduced the feeling of pressure that the occupants felt by providing visibility, especially when used in a bird-proof sheet on a veranda. However, if it is used for a power tower or a mobile phone base station antenna, it is possible to see through the surroundings when working inside a bird's-eye sheet, so that the work can be performed safely.

[Comparative Example 1]
<Base fabric>
A coarse woven fabric (patterned weave) having the following structure made of polyester multifilament yarn was used as the base fabric 4.
833 dtex / 3 x 833 dtex / 3
11 × 11 (lines / inch) Mass 225 g / m ²
<Formation of coating resin layer and antifouling resin layer>
Immerse the base fabric 4 in the processing fluid of Formulation 1, then squeeze it with a mangle, heat it at 180 ° C. for 2 minutes, and put both inorganic particles and deodorant on both sides of the base fabric 4 (the entire surface of the fiber yarn). The sheet | seat in which the flexible resin layer (3-1) containing was formed was obtained. The adhesion amount of the flexible resin layer (3-1) was 250 g / m ² . Next, on one surface of the sheet, the processing liquid of Formulation 4 was applied by a gravure coating method so as to be 30 g / m ^2, and then dried at 120 ° C. for 1 minute, and an antifouling property of 3 g / m ² . A resin layer was formed, and the bird-proof sheet of Comparative Example 1 was obtained. The bird-proof sheet of Comparative Example 1 has a white appearance (brightness 8.5) on both the side on which the antifouling resin layer is formed (ultraviolet scattering surface) and the side on which the antifouling resin layer is not formed (odor control surface). The mesh sheet had a porosity of 10%. Table 2 shows the results of various evaluations of this birdproof sheet.

  Although the bird-proof sheet of Comparative Example 1 has a porosity of 10% and excellent bird-proof property, it has poor human transparency and it is difficult to check the inside when used as a cover for a garbage storage area. Therefore, it was difficult to judge whether trash was properly separated. In addition, when used on a veranda, the field of view was blocked, giving the occupants a feeling of pressure.

[Comparative Example 2]
<Base fabric>
A coarse woven fabric (patterned weave) having the following structure made of polyester multifilament yarn was used as the base fabric 5.
833 dtex / 2 x 1667 dtex
4.5 x 4.5 (lines / inch) Mass 60g / m ²
<Formation of coating resin layer and antifouling resin layer>
Immerse the base fabric 5 in the processing solution of Formulation 1, then squeeze it with a mangle, heat it at 180 ° C. for 2 minutes, and put both inorganic particles and deodorant on both sides of the base fabric 5 (the entire surface of the fiber yarn). The sheet | seat in which the flexible resin layer (3-1) containing was formed was obtained. The adhesion amount of the flexible resin layer (3-1) was 100 g / m ² . Next, on one surface of this sheet, the processing liquid of Formulation 2 was applied by gravure coating so as to be 7 g / m ^2, and then dried at 120 ° C. for 1 minute to prevent 1.5 g / m ² A fouling resin layer was formed, and the bird-proof sheet of Comparative Example 2 was obtained. The bird-proof sheet of Comparative Example 2 has a white appearance (lightness 8.5) on both the side on which the antifouling resin layer is formed (ultraviolet scattering surface) and the side on which the antifouling resin layer is not formed (odor control surface). The mesh sheet had a porosity of 76%. Table 2 shows the results of various evaluations of this birdproof sheet.

  The bird-proof sheet of Comparative Example 2 was excellent in human transparency. However, in the bird-proofing test, the crow flew shortly after the test started (around 6:00 am), and after inspecting the inside for a while, it penetrated through the lower end of the south bird-proof sheet and entered. And then I took away some of the pork fat. Later, several crows and dozens of pigeons invaded inside (it is unknown whether the same individual invaded or another individual), and all food was lost at 11:00 am. Since the porosity is 76%, even if light in the ultraviolet region is scattered at the solid part of the ultraviolet scattering surface, mixing with the ultraviolet light that has passed through the gap is not sufficient, and birds are not safe and food inside the cage. It seems that we were able to recognize the presence or absence. Moreover, since there are few enrichment parts compared with each Example, compared with each Example, the odor suppression property was a little inferior.

[Comparative Example 3]
A bird proof sheet of Comparative Example 3 was obtained in the same manner as Example 2 except that the following Formulation 11 was used instead of Formulation 3. The adhesion amount of the resin layer consisting of the compound 11 was 100 g / m ² , and the antifouling resin layer formed on one surface of the sheet was 2 g / m ² . The bird-proof sheet of Comparative Example 3 was a mesh sheet having a white appearance (brightness of 9.5) on the side where the anti-stain resin layer was formed and the side where the anti-stain resin layer was not formed, and a porosity of 65%. It was. Table 2 shows the results of various evaluations of this birdproof sheet. In the bird-proof evaluation, a cage was created with the side provided with the anti-stain resin layer as the outside.
(Formulation 11) Thermoplastic resin composition containing neither inorganic particles nor deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) ) 2 parts by weight Ba-Zn composite stabilizer 1.5 parts by weight Antimony trioxide (flame retardant) 10 parts by weight Benzotriazole ultraviolet absorber 0.3 parts by weight Titanium oxide particles Average particle size 300 nm 30 parts by weight (Silica- Alumina surface treatment)

  The bird-proof sheet of Comparative Example 3 had a porosity of 65% and had human transparency. However, in the bird-proof test, when the surroundings became bright after the start of the test (around 6:00 am), the crow flew soon and showed the operation of searching for the intrusion route without looking at the inside, and then the bird-side protection He penetrated through the bottom edge of the sheet and took away the pork fat. After that, the crows and pigeons switched and invaded, and all food was lost at 8:30 am. Formulation 11 does not include any of barium sulfate particles, aluminum oxide particles, and magnesium oxide particles as inorganic particles, but instead includes titanium oxide particles. Titanium oxide is generally used as a white pigment because it scatters light in the visible region well, but it absorbs a lot in the ultraviolet region, and in the evaluation of the ultraviolet reflectance, it is very early at 8%. It showed a low value. Therefore, the scattering of light in the ultraviolet region in the solid part is suppressed, and the birds can clearly see the ultraviolet light that has passed through the gap, making it easier for birds to recognize the safety inside the cage and the presence of food. It is thought that. Moreover, since the compound 11 does not contain a deodorant, the odor suppression property was also inferior.

[Comparative Example 4]
A birdproof sheet of Comparative Example 4 was obtained in the same manner as in Example 2 except that the antifouling resin layer was not provided. This sheet was a mesh sheet having a white appearance (brightness 8.5) on both sides and a porosity of 41%. In addition, because the front and back are the same, the bird's side evaluation does not specify the front and back sides, and the cage is created with one side facing outward, and the human perspective is also evaluated only from one side. went. Further, the evaluation of the ultraviolet reflectance was performed without providing the antifouling resin layer on the flexible resin layer formed from Formulation 3. The results are shown in Table 2.

  The bird-proof sheet of Comparative Example 4 showed excellent bird-proof properties immediately after production, but the bird-proof properties were lost after outdoor exposure for one year. After outdoor exposure, the lightness became 7 due to the adhesion of dirt, and the UV reflectance was greatly impaired at 32%, which makes it easier for birds to recognize the safety and the presence of food inside the cage. It is done.

[Comparative Example 5]
A bird proof sheet of Comparative Example 5 was obtained in the same manner as Example 2 except that the following Formulation 12 was used instead of Formulation 3. The adhesion amount of the flexible resin layer (3-1) was 100 g / m ² , and the antifouling resin layer formed on one surface of the sheet was 2 g / m ² . The bird-proof sheet of Comparative Example 5 was a mesh sheet having a white appearance (brightness of 8.5) on the side where the anti-stain resin layer was formed and the side where the anti-stain resin layer was not formed, and a porosity of 65%. It was. Table 2 shows the results of various evaluations of this birdproof sheet.
(Formulation 12) Thermoplastic resin composition containing both inorganic particles and deodorant Emulsion-polymerized polyvinyl chloride resin 100 parts by mass Di-2-ethylhexyl phthalate (plasticizer) 65 parts by mass Epoxidized soybean oil (stabilizer) 2 Part by mass Ba-Zn composite stabilizer 1.5 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Benzotriazole ultraviolet absorber 0.3 part by mass Magnesium oxide (inorganic particles) Particle size 500 nm 10 parts by mass Shiratake charcoal ( Deodorant) 10 parts by weight Iron tourmaline: NaFe ₃ Al ₆ (BO ₃ ) ₃ Si ₆ O ₁₈ (OH) ₄ (deodorant)
5 parts by mass * 4.8% by mass of inorganic particles and 7.3% by mass of deodorant based on the mass of the flexible resin layer (3-1)

  The bird-proof sheet of Comparative Example 5 was inferior in bird-proof properties. The content of inorganic particles is 4.8% by mass and less than 10% by mass with respect to the mass of the flexible resin layer (3-1), and the inorganic particles on the surface of the flexible resin layer (3-1) This is probably because the exposure was low and the initial ultraviolet reflectance of the ultraviolet scattering surface was 42%. In the bird-proofing test, the first crow flew at 7 am, and after looking inside for a while, it penetrated through the lower end of the bird-proof sheet on the south side and took away some of the pig's fat. After that, 12 crows and pigeons came together, 3 of which crows and 4 pigeons invaded. (All pork fat disappeared at 2pm, but about 60g of bread was left.)

  The bird-proof sheet of the present invention is a flexible mesh sheet having a gap, and has an ultraviolet scattering surface and an odor suppressing surface. On the UV scattering surface, the solid part of the mesh sheet scatters light in the UV region, making it impossible for birds to judge the presence or absence of food and enemies, while humans see through the gap through the mesh sheet Can do. Moreover, by having an odor suppression surface, it is possible to reduce internal malodor covered with this sheet and to suppress odor diffusion. Therefore, it can be suitably used for garbage collection covers, bird covers for general houses and apartment houses, verandas, bird covers for high voltage transmission line towers and mobile phone base station antennas, etc. Not only can it be prevented, but it can also be prevented from flying to the periphery, and further, the spread of malodor can be suppressed.

1: Birdproof sheet 1-1: Void part 1-2: Full part 2: Coarse knitted fabric (fiber yarn)
3: Coating resin layer 3-1: Layer containing both inorganic particles and deodorant 3-2: Layer containing deodorant 3-3: Layer containing inorganic particles 4: Antifouling resin layer

Claims (4)

  A flexible mesh having a base fabric made of a coarse knitted fabric composed of fiber yarns and a flexible resin layer formed on both sides of the base fabric and having a porosity of 25 to 70% A heat containing one or more inorganic particles selected from at least barium sulfate particles, aluminum oxide particles, magnesium oxide particles, and zirconium oxide particles on one side of the flexible mesh sheet An ultraviolet scattering surface is formed by including a flexible resin layer made of a plastic resin composition and an antifouling resin layer formed from an acrylic resin and / or a fluorine resin on the flexible resin layer. And the opposite surface side of the flexible mesh sheet is an odor suppressing surface including a flexible resin layer made of a thermoplastic resin composition containing at least a deodorant as an outermost layer, and is on the ultraviolet light scattering surface side. OK Relative to the weight of sexual resin layer, and the content of the inorganic particles is 10 to 50 mass%, Botori sheet.   The bird-proof sheet according to claim 1, wherein the inorganic particles have an average particle diameter of 200 to 1200 nm.   The flexible resin layer on the ultraviolet scattering surface side further contains an organic pigment and is colored to lightness (JISZ8721) 2 to 6, and the reflectance of the ultraviolet scattering surface to ultraviolet rays (wavelength 360 nm) is 60%. The birdproof sheet according to claim 1 or 2, which is as described above.   The bird-proof sheet according to claim 3, wherein the organic pigment includes one or more selected from a cyan organic pigment and a magenta organic pigment.