Tarpaulins and tents

Abstract

This invention provides a tarpaulin that exhibits a heat-shielding effect and / or a snow-sliding effect, and further provides a tent using the tarpaulin. By using the tarpaulin of this embodiment, for example, the weight of the roofing material can be reduced, making the structural materials of tents and the like simpler. In addition, this tent and the like can protect vehicles from heat and snow. [Solution] A tarpaulin containing one or more selected from an infrared reflector, a hydrophilic agent, and a water repellent, and a tent using the tarpaulin.

Description

[Technical Field]

[0001] This invention relates to tarpaulins and tents. [Background technology]

[0002] Tarpaulin is used for applications such as roofing materials, tent warehouses, construction protective sheets, shutter sheets, floor sheets, and partitions. However, tarpaulin suffers from brittle deterioration due to plasticizer bleeding, and the stickiness of the bled plasticizer causes problems with the adhesion of soot and other dirt. For this reason, studies are being conducted on additives, including plasticizers (Patent Document 1).

[0003] Furthermore, carports are used to protect vehicles from rain and other elements (Patent Document 2). Since carports are used outdoors, there is a high requirement for weather resistance. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2015-212014 [Patent Document 2] Japanese Patent Application Publication No. 06-088443 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] The present invention aims to provide tarpaulins and tents that exhibit heat-shielding and / or snow-sliding effects. [Means for solving the problem]

[0006] As a result of diligent research to solve the above problems, the inventors of the present invention provide the following [1]. [1] Tarpaulin containing one or more selected from infrared reflectors, hydrophilic agents and water repellents. [2] A tent made of the tarpaulin described in [1]. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide a tarpaulin and a tent that exhibit a heat shielding effect and / or a snow sliding effect. [Brief Description of the Drawings]

[0008] [Figure 1] This is a schematic diagram showing an example of a tarpaulin including a resin layer and a synthetic fiber layer of the present embodiment. [Figure 2] This is a schematic diagram showing an example of a tarpaulin having a resin layer, a synthetic fiber layer and a surface layer of the present embodiment. [Figure 3] This is a schematic diagram showing an example of the tent 1(a) of the present embodiment. [Figure 4] This is a schematic diagram showing an example of the tent 1(b) of the present embodiment. [Figure 5] This is a schematic diagram for explaining the inclination of the roof 10 of the present embodiment. [Modes for Carrying Out the Invention]

[0009] The aforementioned Patent Document 1 describes that studies have been conducted on the selection of plasticizers, and a tarpaulin having excellent bleed resistance and at the same time excellent flexural durability and heat resistance has been obtained. Evaluations on high-frequency welder fusion of the obtained tarpaulin have also been carried out.

[0010] The tarpaulin of the present disclosure is a tarpaulin containing one or two or more selected from infrared reflecting agents, hydrophilic agents and water repellents, is particularly excellent for outdoor use, and is a tarpaulin that exhibits a heat shielding effect and / or a snow sliding effect.

[0011] When the tarpaulin contains an infrared reflecting agent, it can exhibit a heat shielding effect, and when it contains a hydrophilic agent and / or a water repellent, it can exhibit a snow sliding effect.

[0012] Patent document 2 describes a carport that uses roof panels as roofing material. Although the details are unclear due to the lack of specific descriptions, it is likely that because the roof panels are heavy, the supporting columns and beams must be made of thick material, and the joint fittings used to connect them must also have a special structure.

[0013] Furthermore, in the case of the carport described in Patent Document 1, if metal plates are used as roof panels, the metal plates are thought to block sunlight, protect the vehicle from wind and rain, and protect the vehicle from snow as snow accumulates on the roof panels. It is also conceivable to use resin panels instead of metal plates, but in that case, sufficient thickness would be required to withstand snow accumulation, and some means would be necessary to enable the resin panels to perform their function in terms of heat shielding.

[0014] As described above, the tarpaulin is lightweight and has excellent heat-shielding and snow-repellent properties, making it suitable for use in carports, agricultural greenhouses, tent warehouses, camping tents, sunshade tarps, construction protective sheets, shutter sheets, floor sheets, partitions, and the like.

[0015] The embodiments of this disclosure (hereinafter sometimes referred to as "these embodiments") will be described below. In this disclosure, numerical values ​​related to "greater than or equal to," "less than or equal to," "~," etc., in the description of numerical ranges can be any combination of values.

[0016] Furthermore, any provision deemed preferable can be adopted at will. That is, one provision deemed preferable can be adopted in combination with one or more other provisions deemed preferable. A combination of preferred provisions can be considered even more preferable.

[0017] The tents described herein include carports, agricultural greenhouses, tent warehouses, camping tents, sunshade tarps, construction protective sheets, shutter sheets, floor sheets, partitions, etc., which use the aforementioned tarpaulin as roofing material or the like. [Tarpaulin] The tarpaulin of this embodiment must contain one or more selected from infrared reflectors, hydrophilic agents, and water repellents.

[0018] Tarpaulin is used as roofing material, tent warehouse, building protection sheet, shutter sheet, floor sheet, partition, etc., due to its properties such as flexibility, pliability, and weather resistance. Furthermore, since the tarpaulin of this embodiment contains one or more selected from infrared reflectors, hydrophilic agents, and water repellents, it can exhibit a heat shielding effect and / or snow-repellent effect, making it particularly suitable for outdoor use.

[0019] The thickness of the tarpaulin is not particularly limited as long as it can achieve the desired effect depending on the installation location, but it is preferably 0.10 mm or more and 5.00 mm or less, more preferably 0.15 mm or more and 3.00 mm or less, even more preferably 0.20 mm or more and 2.00 mm or less, even more preferably 0.25 mm or more and 1.00 mm or less, and particularly preferably 0.30 mm or more and 0.50 mm or less.

[0020] In this disclosure, the thickness direction 100 refers to the thickness direction of the tarpaulin, as shown in Figure 1, and the width direction 110 refers to a direction different from the thickness direction, and is perpendicular to the longitudinal direction 120 of the tarpaulin. For example, when tarpaulin is manufactured by the calendering method, the longitudinal direction 120 corresponds to the flow direction (MD: machine direction), and the width direction 110 corresponds to the TD (transverse direction) perpendicular to the MD.

[0021] The tarpaulin has a structure in which a resin layer is provided on at least one surface of a layer containing synthetic fibers (hereinafter referred to as the synthetic fiber layer), and the synthetic fiber layer may be a woven or knitted fabric of synthetic fibers (hereinafter also referred to as the base fabric). The resin layer may be a separate layer from the synthetic fiber layer, or the resin layer may be partially or completely impregnated into the synthetic fiber layer.

[0022] Preferably, the tarpaulin is manufactured by coating at least one side of a synthetic fiber layer with a resin layer, and preferably has a structure in which both sides of a synthetic fiber base fabric are sandwiched between resin layers.

[0023] The base fabric is not particularly limited in terms of its structure or weave, as long as it is a woven or knitted fabric that has been conventionally used for this purpose. Plain weave and twill weave fabrics are preferred, and plain weave is preferred due to its strength, ease of manufacture, and cost advantages when used as tarpaulin. The thickness of the fibers used and the mesh opening can be adjusted as appropriate according to the required characteristics.

[0024] More specifically, the fiber thickness is preferably 0.10 mm or more and 1.0 mm or less, more preferably 0.15 mm or more and 0.8 mm or less, even more preferably 0.20 mm or more and 0.5 mm or less, and even more preferably 0.23 mm or more and 0.3 mm or less.

[0025] Specifically, the mesh opening is preferably 0.2 mm to 2.0 mm, more preferably 0.3 mm to 1.5 mm, even more preferably 0.5 mm to 1.0 mm, and even more preferably 0.6 mm to 0.8 mm.

[0026] The aforementioned synthetic fibers include polyamide resins such as nylon 6, nylon 66, and nylon 610; polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polypropylene terephthalate, and polyethylene naphthalate; polyolefin resins such as polyethylene, polypropylene, polybutene, and polymethylpentene; polyphenylene sulfide resins; biodegradable polymers such as polylactic acid, polybutylene succinate, polyethylene succinate, and polybutylene (succinate / adipate) copolymers; polystyrene resins; polyacrylate resins such as polymethyl methacrylate; polyether resins; and thermoplastics. Thermoplastic elastomers such as polyurethane; fluorine-based resins such as tetrafluoroethylene / ethylene copolymer, tetrafluoroethylene / perfluoroalkoxy vinyl ether copolymer, tetrafluoroethylene / hexafluoropropylene copolymer, polyvinylidene fluoride, and tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer are preferred, as are polyester resins (PET resin, etc.), polyamide resins, polyolefin resins, and polyacrylonitrile resins. Monofilaments and multifilaments are also preferred, with polyester multifilament yarn being more preferred.

[0027] The resin layer is preferably 0.01 mm or more and 1.00 mm or less, more preferably 0.03 mm or more and 0.80 mm or less, even more preferably 0.05 mm or more and 0.60 mm or less, even more preferably 0.06 mm or more and 0.40 mm or less, and particularly preferably 0.08 mm or more and 0.30 mm or less.

[0028] The resin layer is 10 g / m² 2 More than 500g / m 2 Preferably, it is 50 g / m 2 More than 400g / m 2 More preferably, it is 80 g / m² 2 More than 300g / m 2 It is even more preferable that the following conditions apply: 100 g / m 2 More than 250g / m 2The following is even more preferable:

[0029] The aforementioned tarpaulin preferably has two resin layers, one above and one below the synthetic fiber layer. Hereinafter, the layer exposed to rain, etc., will be referred to as the top layer, and the layer on the opposite side as the bottom layer. To ensure durability, it is preferable for both layers to be thick, but since making the resin layer thicker will make the tarpaulin heavier, it is preferable to strike a balance. The top layer is exposed to wind and rain, so it is preferable for it to be thicker. The thickness of the top layer is preferably 1.1 to 2.0 times the thickness of the bottom layer, and more preferably 1.3 to 1.7 times.

[0030] The resin component in the resin layer more preferably contains at least one of polyethylene resins, polypropylene resins, and polyvinyl chloride resins, and more preferably is a thermoplastic synthetic resin such as a polyvinyl chloride resin or an ethylene-vinyl acetate copolymer, and even more preferably is a polyvinyl chloride resin.

[0031] The vinyl chloride resin may be a polymer of polyvinyl chloride monomer alone, or a copolymer of polyvinyl chloride monomer and a monomer copolymerizable with polyvinyl chloride monomer, such as vinyl acetate monomer or acrylonitrile monomer. The polymerization method for the polyvinyl chloride resin is not particularly limited, and resins produced by commonly used polymerization methods such as suspension polymerization or emulsion polymerization can be used.

[0032] The degree of polymerization of the vinyl chloride resin can be appropriately changed depending on the required properties, but it is preferably 1100 to 3000, and more preferably 1200 to 2500, from the perspective of balancing mechanical properties and flexibility.

[0033] The resin layer may contain an additive. The additive may contain a heat shielding agent (infrared reflecting agent) for developing a heat shielding effect and / or a snow sliding agent (hydrophilic agent and / or water repellent agent) for developing a snow sliding effect, and may further contain inorganic components, flame retardants, plasticizers, stabilizers, colorants, antistatic agents, antioxidants, ultraviolet absorbers, lubricants, liquid stabilizers, light stabilizers and the like that are commonly used in the relevant technical field. One or more of these additives may be contained.

[0034] The total content of these additives is not particularly limited as long as the heat shielding effect and / or the snow sliding effect can be developed, but is preferably 30 parts by mass or more and 250 parts by mass or less, more preferably 50 parts by mass or more and 200 parts by mass or less, further preferably 70 parts by mass or more and 180 parts by mass or less, and even more preferably 100 parts by mass or more and 150 parts by mass or less, relative to 100 parts by mass of the resin component.

[0035] ((Infrared reflecting agent)) Since the infrared reflecting agent selectively reflects infrared rays, the amount of infrared rays transmitted to the inner side of the tarpaulin is suppressed, so that a temperature rise can be inhibited (hereinafter sometimes referred to as heat shielding). In addition, when used for the purpose of shielding agricultural crops from heat, it is preferable that the agent transmits visible light.

[0036] The infrared reflecting agent may be an inorganic infrared reflecting agent or an organic infrared reflecting agent, but is preferably an inorganic infrared reflecting agent in view of compound stability and availability, and is preferably titanium oxide, magnesium carbonate, silicon oxide, aluminum oxide, barium sulfate, calcium sulfate, magnesium hydroxide, aluminum hydroxide, calcium hydroxide, tin-doped indium oxide, antimony-doped tin oxide, lanthanum hexaboride, metal phosphate, and lithium aluminum composite hydroxide, more preferably titanium oxide, silicon oxide, aluminum oxide, and tin-doped indium oxide, and even more preferably titanium oxide. Titanium oxide may be either rutile type or anatase type, but is preferably rutile type, and the average particle diameter (D 50The thickness of the ) is preferably 0.3 μm or more, more preferably 0.5 μm or more, even more preferably 0.7 μm or more, and even more preferably 1.0 μm or more, in order to efficiently reflect infrared rays.

[0037] The amount of the infrared reflector is not particularly limited as long as it can exhibit a heat shielding effect and / or snow-sliding effect, but it is preferably 0.1 parts by mass or more and 20.0 parts by mass or less, more preferably 0.5 parts by mass or more and 15.0 parts by mass or less, even more preferably 1.0 part by mass or more and 12.0 parts by mass or less, and even more preferably 3.0 parts by mass or more and 10.0 parts by mass or less, per 100 parts by mass of the resin component.

[0038] ((Hydrophilic agent)) The hydrophilic agent is preferably one or more selected from inorganic hydrophilic agents and organosilicon compounds. More preferably, the inorganic hydrophilic agent is titanium dioxide, magnesium carbonate, silicon dioxide (including organosilicon sol), aluminum oxide, barium sulfate, calcium sulfate, magnesium hydroxide, aluminum hydroxide, calcium hydroxide, etc. More preferably, the organosilicon compound is an organosilicon compound having a polyether structure, and it is even more preferable to use silicon dioxide and organosilicon compounds in combination. The hydrophilic agent may also have the function of an infrared reflector. A characteristic of the hydrophilic agent is that it has hydrophilic parts such as hydroxyl groups.

[0039] The amount of the hydrophilic agent is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 5.0 parts by mass or more and 100.0 parts by mass or less, more preferably 10.5 parts by mass or more and 80.0 parts by mass or less, even more preferably 30.0 parts by mass or more and 60.0 parts by mass or less, and even more preferably 40.0 parts by mass or more and 50.0 parts by mass or less, per 100 parts by mass of the resin component.

[0040] ((Water repellent)) The water-repellent agent is preferably a fluororesin, a silicone resin (including a silicone-acrylic copolymer), or a hydrocarbon resin, more preferably a fluororesin or a silicone resin, and even more preferably both a fluororesin and a silicone resin.

[0041] The amount of the water-repellent agent is not particularly limited as long as it can exhibit a heat-shielding effect and / or a snow-sliding effect, but it is preferably 5.0 parts by mass or more and 100.0 parts by mass or less, more preferably 10.0 parts by mass or more and 80.0 parts by mass or less, even more preferably 30.0 parts by mass or more and 60.0 parts by mass or less, and even more preferably 40.0 parts by mass or more and 50.0 parts by mass or less, per 100 parts by mass of the resin component.

[0042] When used together with the hydrophilic agent, the amount is preferably 1.0 part by mass or more and 30.0 parts by mass or less, more preferably 3.0 parts by mass or more and 20.0 parts by mass or less, even more preferably 5.0 parts by mass or more and 15.0 parts by mass or less, and even more preferably 6.0 parts by mass or more and 10.0 parts by mass or less.

[0043] The total content of the infrared reflector, the hydrophilic agent, and the water repellent agent is not particularly limited as long as it can exhibit a heat shielding effect and / or snow-sliding effect, but it is preferably 3.0 parts by mass or more and 120.0 parts by mass or less, more preferably 5.0 parts by mass or more and 100.0 parts by mass or less, even more preferably 30.0 parts by mass or more and 80.0 parts by mass or less, and even more preferably 40.0 parts by mass or more and 60.0 parts by mass or less, per 100 parts by mass of the resin component.

[0044] The total content of the hydrophilic agent and the water-repellent agent is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 3.0 parts by mass or more and 100.0 parts by mass or less, more preferably 5.0 parts by mass or more and 80.0 parts by mass or less, even more preferably 10.0 parts by mass or more and 60.0 parts by mass or less, and even more preferably 20.0 parts by mass or more and 50.0 parts by mass or less, per 100 parts by mass of the resin component.

[0045] ((Inorganic particles)) The inorganic particles are classified as fillers and are not limited to those in particulate form within the tarpaulin. For example, the following are included: carbonates, sulfates, silicates, phosphates, or borates of metals (calcium, magnesium, aluminum, titanium, iron, zinc, etc.); oxides of metals (calcium, magnesium, aluminum, titanium, iron, zinc, etc.); hydrates of the above salts or oxides, etc., which may be synthesized or derived from natural minerals.

[0046] More specifically, calcium carbonate, magnesium carbonate, zinc oxide, titanium dioxide, silica, alumina, clay, talc (hydrotalcite), kaolin, aluminum hydroxide, magnesium hydroxide, aluminum silicate, magnesium silicate, calcium silicate, aluminum sulfate, magnesium sulfate, calcium sulfate, magnesium phosphate, barium sulfate, silica, carbon black, zeolite, molybdenum, diatomaceous earth, and bentonite are preferred, calcium carbonate, magnesium carbonate, zinc oxide, titanium dioxide, silica, alumina, talc (hydrotalcite), carbon black, zeolite, molybdenum, diatomaceous earth, and bentonite are more preferred, and calcium carbonate, silica, alumina, and talc (hydrotalcite) are even more preferred.

[0047] The aforementioned talc is classified as a clay mineral and a silicate mineral (Mg3Si4O 10It is a type of (OH)2). It is classified as a phyllosilicate mineral, a mineral composed of magnesium hydroxide and silicate, and rocks in which this mineral is the main component are also included. It is also called talc, steatite, soapstone, French chalk, and lava.

[0048] The amount of inorganic particles is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 5.0 parts by mass or more and 100.0 parts by mass or less, more preferably 10.5 parts by mass or more and 70.0 parts by mass or less, even more preferably 20.0 parts by mass or more and 40.0 parts by mass or less, and even more preferably 25.0 parts by mass or more and 35.0 parts by mass or less, per 100 parts by mass of the resin component.

[0049] ((Flame retardant)) The aforementioned flame retardant may be any commonly used in the field, but chlorinated paraffin is preferred, and when a vinyl chloride resin is used as the resin component, antimony oxide is preferred because it can be expected to improve flame retardancy when used in combination with the halogen element (chlorine atom) contained in the vinyl chloride resin. Specifically, antimony oxide, antimony trioxide, and antimony pentoxide are preferred, with antimony trioxide being more preferred. These flame retardants may be used individually, but it is more preferable to use them in combination with chlorinated paraffin and antimony trioxide.

[0050] The amount of the flame retardant is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 0.5 parts by mass or more and 20.0 parts by mass or less, more preferably 1.0 part by mass or more and 10.0 parts by mass or less, even more preferably 2.0 parts by mass or more and 8.0 parts by mass or less, and even more preferably 2.8 parts by mass or more and 6.0 parts by mass or less, per 100 parts by mass of the resin component.

[0051] ((plasticizer)) When a flexible polyvinyl chloride resin is included as a resin component, a general-purpose plasticizer for the flexible polyvinyl chloride resin can be used. For example, phthalate ester plasticizers such as di-2-ethylhexyl phthalate (DOP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), dibutyl phthalate (DBP), butyl benzyl phthalate (BBP), and diundecyl phthalate (DUP) can be used; trimellitic acid ester plasticizers such as trioctyl trimellitate (TOTM); fatty acid ester plasticizers such as dioctyl adipate (DOA), dioctyl sebacate (DOS), and dioctyl azelate (DOZ); phosphate ester plasticizers such as cresyl diphenyl phosphate (CDP) and tricresyl phosphate (TCP); epoxy plasticizers such as epoxidized vegetable oil (e.g., epoxidized soybean oil); polyester plasticizers can be used. Among these, epoxidized soybean oil, DINP, DOP, DOP, DOA, and CDP are preferred, and epoxidized soybean oil, DOP, DOP, DOA, and CDP are more preferred. These plasticizers may be used individually, but it is also preferable to use two or more plasticizers in combination. When used in combination, the combination of DOP and epoxidized soybean oil, epoxidized soybean oil, and the combination of DOP, DOA, and CDP are preferred.

[0052] The content of the plasticizer is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 20.0 parts by mass or more and 150.0 parts by mass or less, more preferably 30.0 parts by mass or more and 100.0 parts by mass or less, even more preferably 40.0 parts by mass or more and 90.0 parts by mass or less, and even more preferably 45.0 parts by mass or more and 80.0 parts by mass or less, per 100 parts by mass of the resin component.

[0053] ((stabilizer)) Preferred stabilizers include metal soaps, epoxy compounds, and organic phosphite-based stabilizers. Preferred metal soaps include metal soap compounds such as lithium stearate, magnesium stearate, magnesium laurate, calcium ricinoleate, calcium stearate, barium laurate, barium ricinoleate, barium stearate, zinc octoate, zinc laurate, zinc ricinoleate, and zinc stearate; organotin compounds such as dimethyl tin bis-2-ethylhexyl thioglycolate, dibutyl tin maleate, dibutyl tin bis-butyl maleate, and dibutyl tin dilaurate; antimony mercaptide compounds; and composite stabilizers such as barium-zinc, calcium-zinc, and barium-cadmium systems.

[0054] The amount of the stabilizer is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 0.5 parts by mass or more and 20.0 parts by mass or less, more preferably 1.0 part by mass or more and 10.0 parts by mass or less, even more preferably 2.0 parts by mass or more and 8.0 parts by mass or less, and even more preferably 2.8 parts by mass or more and 6.0 parts by mass or less, per 100 parts by mass of the resin component.

[0055] ((Stabilizing agent)) Preferred stabilizing agents include phosphite compounds such as triphenyl phosphite, monooctyldiphenyl phosphite, and tridecyl phosphite; beta-diketone compounds such as acetylacetone and benzoylacetone; polyol compounds such as glycerin, sorbitol, pentaerythritol, and polyethylene glycol; perchlorate compounds such as barium perchlorate and sodium perchlorate; hydrotalcite; and zeolite. Stabilizing agents may also function as fillers, making it difficult to clearly separate their roles.

[0056] The content of the stabilizing agent is not particularly limited as long as it can exhibit a heat-shielding effect and / or snow-sliding effect, but it is preferably 0.1 parts by mass or more and 20.0 parts by mass or less, more preferably 0.5 parts by mass or more and 10.0 parts by mass or less, even more preferably 1.0 part by mass or more and 8.0 parts by mass or less, and even more preferably 2.0 parts by mass or more and 6.0 parts by mass or less, per 100 parts by mass of the resin component.

[0057] ((coloring agent)) It is preferable to include a coloring agent in the resin layer so that the tarpaulin can be given the desired color tone.

[0058] The aforementioned coloring agent is one that is commonly used in the present art and is not particularly limited as long as the tarpaulin exhibits the desired color tone. It may be a dye or a pigment, an inorganic compound or an organic compound, a natural coloring agent or a synthetic coloring agent. In particular, when used outdoors and weather resistance is required, it is preferable to use a synthetic pigment, and to improve color development, it is preferable to use an organic pigment. The aforementioned coloring agent preferably contains an inorganic pigment or an organic pigment, and is preferably an inorganic pigment or an organic pigment. More specifically, inorganic pigments such as titanium white (titanium dioxide), zinc oxide, iron oxide, vermilion, ultramarine, cobalt blue, titanium yellow, lead yellow, and carbon black; organic pigments (including dyes) such as isoindolinone, Hansa Yellow A, quinacridone, permanent red 4R, phthalocyanine blue, induthlene blue RS, and aniline black are preferred.

[0059] The amount of the aforementioned coloring agent is not limited as long as it produces the desired design. ((Antistatic agent, UV absorber, antioxidant, lubricant, liquid stabilizer, light stabilizer)) Preferred antistatic agents include nonionic surfactants such as glycerin fatty acid esters, polyoxyethylene alkyl ethers, and polyoxyethylene alkylamines; anionic surfactants such as alkyl sulfonic acids; cationic surfactants such as tetraalkylammonium; and amphoteric surfactants such as alkyl betaines.

[0060] Examples of nonionic surfactants include polyethylene glycol-type nonionic surfactants and polyhydric alcohol-type nonionic surfactants. Polyethylene glycol-type nonionic surfactants are not particularly limited, but examples include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenol ethers, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkylamines, polyoxyethylene polyoxypropylene glycol, polyoxyethylene alkylene alkyl ethers, polyoxyethylene distyrenated phenyl ethers, polyoxyethylene tripenzylphenyl ethers, and polyoxyethylene hydrogenated castor oil ethers. Polyhydric alcohol-type nonionic surfactants are also not particularly limited, but examples include glycerin fatty acid esters, sorbitan fatty acid esters, and sucrose fatty acid esters. Among these, polyethylene glycol-type nonionic surfactants are preferred, polyoxyethylene alkyl ethers are more preferred, and polyoxyethylene (9) alkyl(C12-C14) ethers are even more preferred. As polyoxyethylene (9) alkyl(C12-C14) ethers, commercially available products such as Marpon ACF-9 (manufactured by Matsumoto Oil & Fat Pharmaceutical Co., Ltd.) can be used.

[0061] Preferred anionic surfactants include sodium caprate, sodium laurate, sodium myristate, sodium palmitate, sodium capryl sulfate, sodium lauryl sulfate, sodium myristyl sulfate, sodium oleyl sulfate, monoglyceryl sulfate, sodium ethylsulfonate, sodium stearylsulfonate, sodium oleylsulfonate, and sodium dodecylbenzenesulfonate.

[0062] Preferred cationic surfactants include primary amine salts, secondary amine salts, tertiary amine salts, quaternary ammonium salts, and pyridinium salts. More specifically, preferred are C8-C24 monoalkyltrimethylammonium salts, C8-C24 dialkyldimethylammonium salts, C8-C24 monoalkylamine acetates, C8-C24 dialkylamine acetates, and C8-C24 alkylimidazoline quaternary salts. More preferably, C12-C18 monoalkyltrimethylammonium salts and C12-C18 dialkyldimethylammonium salts are used.

[0063] Preferred UV absorbers include benzotriazole compounds, triazine compounds, benzophenone compounds, and cyanoacrylate compounds, with benzotriazole compounds or triazine compounds being more preferred, and benzotriazole compounds being even more preferred, as they exhibit high UV absorption effects over long periods. These UV absorbers may be used alone, but it is also preferable to use them in combination with two or more plasticizers.

[0064] Examples of the antioxidants include phenolic antioxidants such as monophenolic antioxidants, diphenolic antioxidants, and hindered phenolic antioxidants; phosphorus-based antioxidants such as triphenylphosphite, diisopropylmonophenylphosphite, and monobutyldiphenylphosphite; amine-based antioxidants such as diphenylamine antioxidants and naphthylamine antioxidants; and sulfur-based antioxidants such as phenothiazine, dioctadecyl sulfide, dilauryl-3,3'-thiodipropionate, and 2-mercaptobenzimidazole. As the phenolic antioxidant, a commonly used phenolic antioxidant in this field, such as Irganox 1010 (BASF Japan Ltd.), is preferred, and as the phosphorus-based antioxidant, a commonly used phosphorus-based antioxidant in this field, such as Sumilizer GP (Sumitomo Chemical Co., Ltd.) or Irgafos 168 (BASF Japan Ltd.), is preferred.

[0065] Preferred lubricants include fatty acid ester lubricants such as monoglyceride stearate and stearyl stearate, hydrocarbon lubricants such as liquid paraffin, paraffin wax and synthetic polyethylene wax, fatty acid lubricants such as stearic acid, higher alcohol lubricants such as stearyl alcohol, aliphatic amide lubricants such as stearamide, oleamide and erucamide, alkylene fatty acid amide lubricants such as methylenebisstearamide and ethylenebisstearamide, and metal soap lubricants such as lead stearate, zinc stearate, calcium stearate and magnesium stearate, with magnesium stearate being more preferred. The lubricants may be used individually, but it is also preferable to use two or more lubricants in combination.

[0066] Liquid stabilizers are added, particularly when vinyl chloride resins are used as the resin component, to prevent the detachment of hydrogen chloride from the vinyl chloride resin during processing and to stop the decomposition chain reaction. Barium-zinc stabilizers, calcium-zinc stabilizers, tin stabilizers, and lead stabilizers are preferred, with barium-zinc stabilizers and calcium-zinc stabilizers being more preferred.

[0067] As light stabilizers, bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate and methyl 1,2,2,6,6-pentamethyl-4-piperidyl sebacate (mixture), bis(1,2,2,6,6-pentamethyl-4-piperidyl)[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate, bis(2,2,6,6-tetramethyl) decandioate Methyl-1(octyloxy)-4-piperidyl) ester and reaction products of 1,1-dimethylethyl hydroperoxide and octane, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, ester mixture of 2,2,6,6-tetramethyl-4-piperidinol and higher fatty acids, tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butanetetracarboxylate, tetrakis(1,2,2,6,6-pentamethyl-4-piperidyl) Peridyl)-1,2,3,4-butanetetracarboxylate, polycondensate of dimethyl succinate and 4-hydroxy-2,2,6,6-tetramethyl-1-piperidineethanol, poly[{(6-(1,1,3,3-tetramethylbutyl)amino-1,3,5-triazine-2,4-diyl){(2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidyl)imino}}, dibutylamine·1,3,5- Hindered amines such as triazine·N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl-1,6-hexamethylenediamine and N-(2,2,6,6-tetramethyl-4-piperidyl)butylamine polycondensate, and N,N',N'',N'''-tetrakis-(4,6-bis-(butyl-(N-methyl-2,2,6,6-tetramethylpiperidine-4-yl)amino)-triazine-2-yl)-4,7-diazadecane-1,10-diamine are preferred.

[0068] (Surface layer) The tarpaulin may have a surface layer on top of the resin layer. This surface layer is preferable because it is the outermost surface of the tarpaulin, protecting the resin layer and providing a heat-shielding effect and / or snow-sliding effect. The surface layer may contain a heat-shielding agent and / or a snow-sliding agent in addition to the thermoplastic resin, and may further contain the aforementioned additives. By providing the surface layer on the outer surface of the tent, the effects can be achieved with general-purpose tarpaulin that does not contain infrared reflectors, hydrophilic agents, and water-repellent agents, and the effects can be enhanced even if the tarpaulin does contain infrared reflectors, hydrophilic agents, and water-repellent agents, which is preferable.

[0069] To achieve the heat-shielding effect, it is preferable to include the infrared reflector; to achieve the snow-sliding effect, it is preferable to include the hydrophilic agent; and to achieve the snow-sliding effect, it is preferable to include the water-repellent agent. The snow-sliding effect is preferably improved by making the surface of the tarpaulin hydrophilic with a hydrophilic agent or water-repellent with a water-repellent agent, but it is also preferable to use a combination of these.

[0070] The surface layer is preferably made of a thermoplastic resin and optionally contains the infrared reflector, the hydrophilic agent, and the water repellent.

[0071] The content of each component in the surface layer is not particularly limited, as long as it can exhibit a heat-shielding effect and / or a snow-sliding effect.

[0072] When the above-mentioned infrared reflector and hydrophilic agent are included, it is necessary to increase the content of the hydrophilic agent, and the content of the infrared reflector is preferably 20.0 parts by mass or more and 400.0 parts by mass or less, more preferably 50.0 parts by mass or more and 300.0 parts by mass or less, even more preferably 100.0 parts by mass or more and 200.0 parts by mass or less, and even more preferably 130.0 parts by mass or more and 170.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0073] The content of the hydrophilic agent is preferably 100.0 parts by mass or more and 1000.0 parts by mass or less, more preferably 300.0 parts by mass or more and 800.0 parts by mass or less, even more preferably 400.0 parts by mass or more and 700.0 parts by mass or less, and even more preferably 550.0 parts by mass or more and 650.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0074] The total content of the infrared reflector and the hydrophilic agent is preferably 100.0 parts by mass or more and 1000.0 parts by mass or less, more preferably 300.0 parts by mass or more and 900.0 parts by mass or less, even more preferably 500.0 parts by mass or more and 850.0 parts by mass or less, and even more preferably 600.0 parts by mass or more and 800.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0075] When the aforementioned infrared reflector and water repellent are included, it is necessary to increase the content of the water repellent, and the content of the infrared reflector is preferably 5.0 parts by mass or more and 40.0 parts by mass or less, more preferably 10.0 parts by mass or more and 35.0 parts by mass or less, even more preferably 20.0 parts by mass or more and 30.0 parts by mass or less, and even more preferably 22.0 parts by mass or more and 27.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0076] The amount of the water-repellent agent is preferably 5.0 parts by mass or more and 40.0 parts by mass or less, more preferably 10.0 parts by mass or more and 30.0 parts by mass or less, even more preferably 13.0 parts by mass or more and 25.0 parts by mass or less, and even more preferably 15.0 parts by mass or more and 20.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0077] The total content of the infrared reflector and the water repellent is preferably 10.0 parts by mass or more and 100.0 parts by mass or less, more preferably 20.0 parts by mass or more and 70.0 parts by mass or less, even more preferably 30.0 parts by mass or more and 50.0 parts by mass or less, and even more preferably 35.0 parts by mass or more and 45.0 parts by mass or less, per 100 parts by mass of the thermoplastic resin.

[0078] The thickness of the surface layer is not particularly limited as long as a heat-shielding effect and / or snow-sliding effect is achieved, but it is preferably 1 μm or more and 500 μm or less, more preferably 10 μm or more and 400 μm or less, and even more preferably 100 μm or more and 300 μm or less.

[0079] ((thermoplastic resin)) Examples of the thermoplastic resin include acrylic resins, polyolefin resins, polyester resins, and polystyrene resins, but acrylic resins are preferred because they have good coating properties.

[0080] Regardless of whether or not there is a surface layer, it is preferable that the tarpaulin be welded by high-frequency welding in order to obtain a large-area tarpaulin.

[0081] The following (1) to (11) are preferred for the layer structure of the roofing material and the relationship between the infrared reflector, hydrophilic agent, and water repellent agent contained in each layer. Note that " / " indicates the space between layers, and the right side represents the outside air (sun) side. The space between the resin layer and the synthetic fiber layer is not clearly defined because the resin layer permeates the synthetic fiber, and it can be said that it is a manufacturing configuration in which the resin layer and synthetic fiber layer are stacked. Furthermore, [] indicates that the layer immediately preceding it contains the agent described in between. (1) Resin layer / synthetic fiber layer / resin layer [infrared reflector, hydrophilic agent] (2) Resin layer / synthetic fiber layer / resin layer [infrared reflector, water repellent] (3) Resin layer [infrared reflector] / synthetic fiber layer / resin layer [infrared reflector, hydrophilic agent] (4) Resin layer [infrared reflector] / Synthetic fiber layer / Resin layer [infrared reflector, water repellent] (5) Resin layer [infrared reflector] / Synthetic fiber layer / Resin layer [infrared reflector, hydrophilic agent, water repellent agent] (6) Resin layer / synthetic fiber layer / resin layer / surface layer [infrared reflector, hydrophilic agent] (7) Resin layer / synthetic fiber layer / resin layer / surface layer [infrared reflector, water repellent] (8) Resin layer / Synthetic fiber layer / Resin layer [infrared reflector] / Surface layer [hydrophilic agent] (9) Resin layer / Synthetic fiber layer / Resin layer [infrared reflector] / Surface layer [water repellent] (10) Resin layer [infrared reflector] / Synthetic fiber layer / Resin layer [infrared reflector] / Surface layer [hydrophilic agent] (11) Resin layer [infrared reflector] / Synthetic fiber layer / Resin layer [infrared reflector] / Surface layer [water repellent] (12) Resin layer [infrared reflector] / Synthetic fiber layer / Resin layer [infrared reflector] / Surface layer [hydrophilic agent, water repellent agent] From the standpoint of ease of production, (3) to (12) containing a hydrophilic or hydrophobic agent in the surface layer is preferable, as having a surface layer allows general-purpose tarpaulin to be given a heat-shielding effect and / or snow-repellent effect, and the tarpaulin of this embodiment can be manufactured. To increase the content of the infrared absorbing material, (1) to (5) and (8) to (12) are preferable, and from the viewpoint of balancing these, (8) or (9) is preferable.

[0082] (1) to (5), which do not have a surface layer, are preferable because they are easier to manufacture since the process of forming a surface layer can be omitted.

[0083] The tarpaulin of this embodiment contains one or more selected from infrared reflectors, hydrophilic agents, and water repellents in the resin layer and / or surface layer to provide a heat-shielding effect and / or snow-repellent effect, but regardless of which layer it is contained in, 1 m of tarpaulin 2 The preferred content per unit is as follows:

[0084] The infrared reflector is 1.0 g / m 2 More than 50.0g / m 2 Preferably, it is 5.0 g / m 2 More than 30.0g / m 2It is more preferable that the following is the case: 7.0 g / m 2 More than 20.0g / m 2 It is even more preferable that the following conditions apply: 10.0 g / m 2 More than 15.0g / m 2 The following is even more preferable:

[0085] The hydrophilic agent is 0.1 g / m 2 More than 20.0g / m 2 Preferably, it is 0.5 g / m 2 More than 10.0g / m 2 It is more preferable that the following conditions apply: 1.0 g / m 2 More than 5.0g / m 2 It is even more preferable that the following conditions apply: 1.5 g / m 2 More than 2.0g / m 2 The following is even more preferable:

[0086] The water repellent is 0.01 g / m 2 More than 3.00g / m 2 Preferably, it is 0.05 g / m 2 More than 1.00g / m 2 It is more preferable that the following is the case: 0.10 g / m 2 More than 0.50g / m 2 It is even more preferable that the following is the case: 0.20 g / m 2 More than 0.30g / m 2 The following is even more preferable:

[0087] 〔tent〕 The tent must be a tent made of the tarpaulin. The tarpaulin is lightweight and exhibits heat-shielding and / or snow-sliding effects, so it is preferable to use it as a roofing material in particular to suppress the effects of snowfall and direct sunlight inside the tent. The tent includes carports, agricultural greenhouses, tent warehouses, camping tents, sunshade tarps, construction protective sheets, shutter sheets, floor sheets, partitions, etc. The following explanation of tents will use carports as an example, but the same applies to agricultural greenhouses, tent warehouses, camping tents, sunshade tarps, construction protective sheets, shutter sheets, floor sheets, partitions, etc.

[0088] The carport may be a double-sided support type or a single-sided support type. In the case of a double-sided support type, it may be an M-shaped gable type (Figure 3), a Y-shaped gable type (not shown), a flat type (not shown), or a single-sided support type (Figure 4). However, when using tarpaulin, which exhibits a snow-sliding effect, as the roofing material, it is preferable that the roof be sloped rather than horizontal, even if it is a flat type, in order to allow snow to fall off. In the case of an M-shaped gable type, it is also preferable that the roof 10 is sloped. The slope refers to the angle made horizontally with the rafters 30. A larger slope is preferable as it makes it more difficult for snow to accumulate, but if it is too large, the surface area of ​​the roof will be large, so it is preferable that it is 10° to 60°, more preferably 20° to 50°, even more preferably 25° to 45°, and even more preferably 30° to 40°. If the slope of the roof 10 is not uniform, the angle between the line connecting the highest point of the roof 10 (ridge 70 in the case of a double-sided support type, and rafter hanger 50 in the case of a single-sided support type) and the beam 60 in the horizontal direction is defined as the roof slope (α in Figure 5).

[0089] The area enclosed by the two columns 20, the beam 60, and the ground is called side 7, and the opposite side is called side 8. The area enclosed by the two columns 20 and two rafters 30 sandwiched between side 7 and side 8, on which vehicles enter, is called front 5, and the opposite side of front 5 is called rear 6.

[0090] The structural elements for maintaining the shape of the carport, such as the columns 20, rafters 30, central supports 40, rafter hangers 50, beams 60, and ridge 70, may be made of metal such as aluminum, iron, or stainless steel, or of resin. If made of resin, resin pipes or resin rods are preferred. The resin may be vinyl chloride resin, polyester resin, polyethylene, polypropylene, polystyrene, or a mixture thereof. When tarpaulin is used as the roofing material, it is preferred because it is lightweight, which reduces the load on the structural elements and broadens the range of material selection.

[0091] The carport may accommodate only one vehicle, or it may accommodate two or more vehicles. Its size will vary depending on the size and number of vehicles to be stored, but generally it is preferable that it be at least 50 cm higher than the total height of the vehicle (from the ground to the ceiling), the space between the two pillars 20 at the front 5 is preferably at least 50 cm wider than the width of the vehicle, and the space between the two pillars 20 at the side 7 is preferably at least 50 cm wider than the total length of the vehicle.

[0092] The carport is equipped with a roofing material 11 on the roof portion 10, as described below. The roofing material is preferably positioned on the side opposite to the vehicle relative to the central frame 40 and rafters 30, so as to protect the central frame 40 and rafters 30 from wind, rain, heat from sunlight, and snow. The tarpaulin may be used not only as the roofing material 11, but also on the front 5, back 6, sides 7, and sides 8. [Method for manufacturing tarpaulin] The tarpaulin used as roofing material in this embodiment can be manufactured, for example, by the following method.

[0093] Tarpaulin having the layer configuration of resin layer / synthetic fiber layer / resin layer [infrared reflector, hydrophilic agent] as described in (1) above can be manufactured by obtaining a sheet-like resin layer from the resin component by calendering or melt extrusion molding, then obtaining a sheet-like resin layer from the resin component containing the infrared reflector and hydrophilic agent by calendering or melt extrusion molding, and finally placing a plain weave fabric using multifilament synthetic fibers between the two obtained sheet-like resin layers and laminating and integrating them by a heat lamination method.

[0094] The resin layer [infrared reflector] / synthetic fiber layer / resin layer [infrared reflector] / surface layer [infrared reflector, water repellent] described in (12) above can be obtained by first obtaining a sheet-like resin layer from a resin component containing an infrared reflector by calendering or melt extrusion molding, then using two of the obtained sheets, placing a plain weave fabric made of synthetic fiber multifilaments between the two sheet-like resin layers, laminating and integrating them by a heat lamination method, and then applying a thermoplastic resin containing an infrared reflector and water repellent to form a surface layer to the resulting laminate, and finally heating it to obtain a tarpaulin.

[0095] The surface layer can be manufactured by dissolving the infrared reflector, hydrophilic agent, and colorant, as needed, in an organic solvent along with the thermoplastic resin, applying the mixture onto the resin layer, and then curing it.

[0096] Examples of the aforementioned organic solvents include: aliphatic alcohols having 1 to 8 carbon atoms such as methanol, ethanol, isopropyl alcohol, isobutyl alcohol, hexyl alcohol, and 2-ethylhexyl alcohol; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, and diacetone alcohol; esters such as ethyl acetate, methyl acetate, butyl acetate, methyl lactate, and ethyl lactate; ethers such as diethyl ether, diisopropyl ether, methyl cellosolve, ethyl cellosolve, butyl cellosolve, dioxane, methyl tert-butyl ether, and butyl carbitol; and ethylene glycol, diethylene glycol, and triethylene glycol. Examples include glycols such as glycol, propylene glycol, and dipropylene glycol; glycol ethers such as ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, diethylene glycol monomethyl ether, triethylene glycol monomethyl ether, propylene glycol monomethyl ether, and 3-methoxy-3-methyl-1-butanol; glycol esters such as ethylene glycol monomethyl ether acetate, propylene glycol monomethyl ether acetate, and diethylene glycol monoethyl ether acetate; and amides such as formamide, acetamide, benzamide, N,N-dimethylformamide, and acetanilide. Organic solvents can be used individually or in combination of two or more.

[0097] The tarpaulin of this embodiment is preferably one of the following [1] to [5]. [1] Tarpaulin containing one or more selected from infrared reflectors, hydrophilic agents and water repellents. [2] The tarpaulin according to [1], wherein the infrared reflector is an inorganic infrared reflector. [3] The tarpaulin according to [1] or [2], wherein the hydrophilic agent is one or more selected from inorganic hydrophilic agents and organosilicon compounds. [4] The tarpaulin according to any one of [1] to [3], wherein the water repellent is one or more selected from fluororesins, silicone resins (including silicone-acrylic copolymers), and hydrocarbon resins. [5] A tent made using the tarpaulin described in any one of [1] to [4]. [Examples]

[0098] The present invention will be described in more detail below with reference to examples. However, the present invention is not limited in any way to the following examples. 1. Evaluation of heat shielding performance The tarpaulins obtained in the examples and comparative examples described below were cut to a size of 30 cm x 30 cm and used as evaluation samples.

[0099] A container was prepared with six sides covered in insulating material (30mm thick polystyrene foam) and a 20cm x 20cm cutout on the top surface. The container was sealed with adhesive, except for the cutout. The evaluation sample was placed on top of the container so that it completely covered the cutout.

[0100] A temperature sensor was placed directly below the aforementioned material at a distance of 150 mm from the evaluation sample, and a 300W infrared lamp was placed on the opposite side of the evaluation sample from the temperature sensor. Before irradiating with the infrared lamp, the temperature sensor was confirmed to be 25°C, and the temperature (°C) was measured after 40 minutes of infrared irradiation. The results are shown in Table 4.

[0101] 2. Evaluation of snow skiing performance The aforementioned evaluation sample was attached to a board positioned at an 80° inclination, with the side containing the de-icing agent facing outwards. It was left outdoors overnight during snowfall (Yuzawa City, Niigata Prefecture, January 15, 2025, 17:00 to January 16, 2025, 10:00), and the snow adhesion status was observed. The following three-stage evaluation was performed. The results are shown in Table 4.

[0102] Grade A (indicated as A in the table): No snow was observed adhering to the surface.

[0103] Rating B (indicated as B in the table): Snow was attached to part of the surface.

[0104] C rating (indicated as C in the table): Snow was attached to the entire surface.

[0105] 3.Materials used (Resin component for forming the resin layer of tarpaulin) The components shown in Table 1 were added to 100 parts by mass of a vinyl chloride resin and mixed at 90°C using a resin mixing mixer to obtain the resin for forming the resin layer used in the examples and comparative examples. The resin layer was prepared using the topcoat resin composition and the basecoat resin composition.

[0106] [Table 1]

[0107] Table 1 lists the content (parts by mass) of each component per 100 parts by mass of vinyl chloride resin (PVC resin), and "-" means that the component is not present. PVC resin 1: Kanebeer S1001T (manufactured by Kaneka Corporation) PVC resin 2: Kanebeer S1003D (manufactured by Kaneka Corporation) PVC resin 3: TK-800 (manufactured by Shin-Etsu Chemical Co., Ltd.) Heat-shielding agent 1: JR1000 (manufactured by Teika Co., Ltd., rutile-type titanium dioxide, average particle size 1.0 μm) Plasticizer 1: Epoxy soybean oil Plasticizer 2: DOP Plasticizer 3: DOA Plasticizer 4: CDP Inorganic particle 1: Calcium carbonate (manufactured by Shiraishi Calcium Co., Ltd., Whiteon SB Aka, average particle size: 1.80 μm) Inorganic particles 2: Calcium carbonate (manufactured by Shiraishi Calcium Co., Ltd., Whiteon SSB Blue, average particle size: 1.50 μm) Inorganic particle 3: IC-71M (hydrotalcite, manufactured by Toda Kogyo Co., Ltd.) Stabilizer 1: ADEKA Stab LT704D-2 (manufactured by ADEKA Corporation) Stabilizer 2: UVINUL 3035 (manufactured by BASF Japan Ltd.) Stabilizer 3: BZ-254T (manufactured by Katsuta Chemical Co., Ltd.) Flame retardant 1: Antimony trioxide (PATOX-MK, manufactured by NSK Ltd.) Flame retardant 2: Chlorinated paraffin (K-45, manufactured by Ajinomoto Fine Techno Co., Ltd.) Flame retardant 3: Antimony trioxide (AT-3TL, manufactured by Suzuhiro Chemical Co., Ltd.) Pigment 1: White pigment (JR401, manufactured by Teika Co., Ltd.)

[0108] (Tarpaulin fiber woven fabric) Polyester multifilament (250D) with a weight of 250g per 9000m was used as the warp and weft threads, and this was woven in a plain weave to create a textile fabric (23×24 / inch).

[0109] (Example 1) Using the resin component of the aforementioned topcoat resin composition, 200 g / m² was produced by calendering. 2 A white, sheet-like resin layer (top layer) was obtained. Similarly, 129 g / m² of the resin component of the above-mentioned base resin composition was used. 2 A white, sheet-like resin layer (base) was obtained.

[0110] The aforementioned textile fabric is sandwiched between the aforementioned resin layers (top and bottom layers) and laminated using a heat lamination method (150°C, 20 kgf / cm²). 2 The tarpaulin of Example 1 (thickness: 0.50 mm) was obtained by ).

[0111] (Example 2) In the tarpaulin of Example 1, surface layer composition 1 shown in Table 2 was dissolved in a mixed solvent of methyl ethyl ketone, ethyl acetate, and acetone, and after drying with a die coater, 2 g / m² was added. 2 By applying the material in this manner and allowing it to dry, a hydrophilic surface layer is formed, yielding the tarpaulin of Example 2.

[0112] (Example 3) In Example 2, a water-repellent surface layer was formed in the same manner as in Example 2, except that surface layer composition 2 was used instead of surface layer composition 1 in Table 2, to obtain the tarpaulin of Example 3.

[0113] Table 2 lists the content (parts by mass) of each component per 100 parts by mass of thermoplastic resin 1, and "-" means that the component is not present.

[0114] [Table 2]

[0115] Hydrophilic agent 1: Organosilica sol (PGM-ST, manufactured by Nissan Chemical Corporation) Water repellent 1: Silicone-acrylic copolymer (Modiper FS710-1, NOF Corporation)

[0116] (Comparative Example 1) The aforementioned textile fabric is sandwiched between two of the aforementioned resin layers (base layers) and laminated using a heat lamination method (150°C, 20 kgf / cm²). 2 A tarpaulin (thickness: 0.50 mm) of Comparative Example 1 was obtained by the above method. The tarpaulin using the above resin layer (base) does not contain any infrared reflectors, hydrophilic agents, or water repellents.

[0117] (Example 4) On one surface of the tarpaulin of Comparative Example 1, surface layer composition 1 from Table 2 was dissolved in a mixed solvent of methyl ethyl ketone, ethyl acetate, and acetone, and after drying with a die coater, 2 g / m² was applied. 2 By applying the material in this manner and allowing it to dry, a hydrophilic surface layer is formed, yielding the tarpaulin of Example 4.

[0118] (Example 5) On one surface of the tarpaulin of Comparative Example 1, surface layer composition 2 from Table 2 was dissolved in a mixed solvent of methyl ethyl ketone, ethyl acetate, and acetone, and after drying with a die coater, 2 g / m² was applied. 2 By applying the material in this manner and allowing it to dry, a water-repellent surface layer is formed, yielding the tarpaulin of Example 5.

[0119] 1 m of tarpaulin produced in Examples 1-5 and Comparative Example 1 2 Content of each component per unit (g / m³) 2 The results are summarized in Table 3.

[0120] [Table 3]

[0121] In the table, "-" indicates that the ingredient is not present.

[0122] The heat-shielding and snow-sliding performance of the tarpaulins produced in Examples 1 to 5 and Comparative Example 1 were evaluated, and the results are shown in Table 4.

[0123] [Table 4]

[0124] The tarpaulins in Examples 1-3 were found to have excellent heat-shielding properties, while the tarpaulins in Examples 2-5 were found to have excellent snow-sliding properties. In particular, the tarpaulins in Examples 2 and 3 were found to have excellent heat-shielding and snow-sliding properties.

[0125] By using the tarpaulins from Examples 1-5, the weight of the roofing material could be reduced, allowing for a simpler carport structure (using 10mm thick polyvinyl chloride pipes). This carport proved effective in protecting vehicles from heat and snow. [Industrial applicability]

[0126] The aforementioned tarpaulin is lightweight and has excellent heat-shielding and snow-repellent properties, making it suitable for use in carports, agricultural greenhouses, tent warehouses, camping tents, sunshade tarps, construction protective sheets, shutter sheets, floor sheets, partitions, and the like. [Explanation of Symbols]

[0127] 1(a): Carport with support on both sides 1(b): Single-sided support type carport 5:Front 6: Back 7: Side 8: Side 9: Ground 10: Roof 11: Tarpaulin 12: Tarpaulin (with a surface layer of 200) 20: Pillar 30: Rafters 40: Backbone 50: Rafter hanger 60 digits 70: Building 100: Thickness direction 110: Width direction 120: Longitudinal direction 200: Surface layer 300: Resin layer 400: Synthetic fiber layer 410: Synthetic fiber 500: Resin layer

Claims

1. Tarpaulin containing one or more selected from infrared reflectors, hydrophilic agents, and water repellents.

2. The tarpaulin according to claim 1, wherein it contains an infrared reflector, and the infrared reflector is an inorganic infrared reflector.

3. The tarpaulin according to claim 1 or 2, wherein it contains a hydrophilic agent, and the hydrophilic agent is one or more selected from inorganic hydrophilic agents and organosilicon compounds.

4. The tarpaulin according to claim 1 or 2, wherein the water repellent is one or more selected from fluororesins, silicone resins (including silicone-acrylic copolymers), and hydrocarbon resins.

5. A tent using the tarpaulin described in claim 1 or 2.

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