Net for screen door and screen door

Abstract

To provide a net for a wire screen having excellent antifouling properties by using an antifouling agent having a specific structure, and to provide a wire screen using the same.SOLUTION: The net for the screen door has warps and wefts, and at least one of the warps and the wefts contains a resin component and an antifouling agent, and contains one or more kinds of hydrophilic copolymers and one or more kinds of compounds represented by general formula (1) as the antifouling agent.SELECTED DRAWING: None

Description

[Background technology]

[0001] Screens are installed mainly on windows and other openings to prevent insects from entering homes and other indoor spaces. Although the target insects vary depending on the season and region, to prevent insects from entering, the screen net needs to have a certain mesh size (generally 16 mesh or larger). As the mesh size increases, the distance between the fibers of the net narrows, preventing insects from entering, but this also causes problems such as poor ventilation and increased adhesion of sand, dust, oil, etc. to the net.

[0002] In order to eliminate adhesion of sand, dust, oil, etc., methods that use a photocatalytic substance (Patent Document 1) and methods that form a water-repellent silica layer (Patent Document 2) have been investigated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-242340 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-237957 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a screen net for a screen door that has excellent stain resistance by using an antifouling agent having a specific structure, and a screen door using the same. [Means for solving the problem]

[0005] As a result of extensive research into solving the above problems, the present inventors provide the following [1] and [2]. [1] Having warp and weft threads; At least one of the warp yarns and the weft yarns contains a resin component and a stain resistant agent, A screen door net containing one or more hydrophilic copolymers and one or more compounds represented by general formula (1) as the antifouling agent.

[0006] Met(OH) m (OCO-R 11 ) n (1) (wherein Met represents a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum; R 11 represents an alkyl group having 1 to 40 carbon atoms, -CH2- in the alkyl group may be substituted with a cycloalkyl group or an aryl group, m represents 0, 1 or 2, n represents 1, 2 or 3, and m+n is the metal valence of Met.

[0007] [2] A screen door using the screen net described in [1]. [Effects of the Invention]

[0008] According to the present invention, by using an antifouling agent having a specific structure, it is possible to provide a screen net for a screen door that has excellent antifouling properties, and a screen door using the same. DETAILED DESCRIPTION OF THE INVENTION

[0009] Patent Document 1 describes an invention related to a screen door net using a specific photocatalytic substance. As described in Patent Document 1, when a photocatalytic substance is used, the active oxygen generated by the photocatalytic substance decomposes organic matter, thereby exhibiting anti-fouling properties. However, there is a problem in that the active oxygen also decomposes the resin that forms the wire. To solve this problem, Patent Document 1 employs a method in which coated photocatalytic particles are incorporated into the resin. However, this method does not fully demonstrate the effect of coating the photocatalytic particles, and there is also the problem that thinning the coating layer to exhibit anti-fouling properties causes deterioration of the resin over time.

[0010] Patent Document 2 describes an invention in which a surface is treated with water repellency using polyorganosiloxane to exhibit antifouling properties. This method has problems with the solubility of polyorganosiloxane in the resin component, which limits the resin component, and it is difficult to obtain a content sufficient to exhibit the effect.

[0011] As mentioned above, narrowing the gap between the fibers of the netting used for screen doors can prevent insects and other insects from entering, but this also makes it more susceptible to the adhesion of sand, dust, oil, and other contaminants. Methods for cleaning screen door netting include removing it from the window frame and washing it with water, or wiping it with a towel or rag, but if a screen door netting with excellent stain resistance could be provided, the frequency of cleaning would be reduced and the burden per cleaning would also be reduced. For these reasons, there is a strong demand for screen door netting with excellent stain resistance.

[0012] In the present disclosure, "fouling resistance" means the property of preventing sand, dust, oil, etc. from adhering to a screen door net, as well as the property of easily removing adhering sand, dust, oil, etc. The fouling resistance can be evaluated, for example, by the method described in the Examples.

[0013] It has been found that the screen door net of this embodiment is easy to handle due to the use of a specific antifouling agent, and in addition, it has excellent durability while also having the effect of preventing insects from entering the room.

[0014] The following describes a screen door net according to this embodiment and a screen door using the net, but is not limited to the following examples.

[0015] Hereinafter, an embodiment of the present disclosure (hereinafter, sometimes referred to as "the present embodiment") will be described. Note that in the present embodiment, numerical values ​​related to "greater than or equal to," "less than or equal to," "to," etc., in describing a numerical range are numerical values ​​that can be arbitrarily combined.

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

[0017] [Screen door net] The screen net of this embodiment has warp threads and weft threads, and at least one of the warp threads and the weft threads contains a resin component and an antifouling agent, and the antifouling agent contains one or more hydrophilic copolymers and one or more compounds represented by general formula (1).

[0018] The screen door netting may be any net that exhibits antifouling properties, prevents the intrusion of insects, etc., and has excellent durability, but is preferably a net constructed by weaving warp and weft threads of the same thickness and number in a net shape using a plain weave, a raschel knitting, a leno weave, or the like. The intersections of the warp and weft threads may be integrally welded or bonded while remaining in contact with each other. The warp and weft threads may be monofilament or multifilament.

[0019] Both the warp and weft preferably contain the resin component, and one or both preferably further contain the stain-proofing agent.

[0020] The mesh (number of threads per inch (25.4 mm)) of the screen door net is preferably 10 mesh or more and 50 mesh or less, and more preferably 18 mesh or more and 40 mesh or less. The basis weight of the screen door net is 28 g / m 2 More than 2,250g / m 2 The openings may be square or rectangular, but are preferably square with one side of 0.3 mm to 5.0 mm.

[0021] The warp and weft preferably have a fiber diameter (fiber thickness) of 0.10 mm or more and 2.00 mm or less, more preferably 0.12 mm or more and 1.50 mm or less. The warp and weft preferably have a denier of 64 denier or more and 25,700 denier or less.

[0022] At least one of the warp yarns and the weft yarns is required to contain a resin component and an antifouling agent, but in order to further enhance the antifouling properties, it is preferable that both the warp yarns and the weft yarns contain the resin component and the antifouling agent.

[0023] The resin component, the antifouling agent, and other components that may be further contained will be described below.

[0024] <Resin component> The resin component may be any resin that is normally used to form a screen door net, but it is preferable that the resin component contains one or more types of thermoplastic resin.

[0025] (thermoplastic resin) The thermoplastic resin is preferably a polyolefin resin such as polyethylene or polypropylene, a polyester resin such as polyethylene terephthalate (PET), a polyvinyl chloride resin, a polyacrylonitrile resin, or a polyvinyl alcohol resin, with a polypropylene resin being more preferred due to its excellent heat resistance, mechanical strength, and flexibility. These may be used alone or in combination of two or more.

[0026] In order to improve the solubility, antifouling properties, and durability of the antifouling agent described below, the mass average molecular weight (Mw) of the thermoplastic resin is preferably 50,000 or more and 800,000 or less, more preferably 100,000 or more and 600,000 or less, even more preferably 200,000 or more and 500,000 or less, and even more preferably 300,000 or more and 400,000 or less.

[0027] In order to improve the solubility, antifouling properties, and durability of the antifouling agent described below, the polydispersity (Mw / Mn) of the thermoplastic resin is preferably 1.0 or more and 10.0 or less, more preferably 3.0 or more and 7.0 or less, even more preferably 4.0 or more and 6.0 or less, and even more preferably 4.5 or more and 5.5 or less.

[0028] When the thermoplastic resin has a glass transition point (Tg), the Tg is preferably 100°C or higher, more preferably 108°C or higher, even more preferably 115°C or higher, and even more preferably 117°C or higher, in order to improve the solubility, antifouling properties, and durability of the antifouling agent described below.

[0029] The upper limit of Tg is not particularly limited, but is preferably 150°C or less, more preferably 140°C or less, even more preferably 130°C or less, and even more preferably 125°C or less.

[0030] <Anti-fouling agent> The antifouling agent must contain one or more hydrophilic copolymers and one or more compounds represented by general formula (1).

[0031] Met(OH) m (OCO-R 11 ) n (1) (wherein Met represents a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum; R 11 represents an alkyl group having 1 to 40 carbon atoms, -CH2- in the alkyl group may be substituted with a cycloalkyl group or an aryl group, m represents 0, 1 or 2, n represents 1, 2 or 3, and m+n is the metal valence of Met.

[0032] The hydrophilic copolymer and the compound represented by general formula (1) will be described later.

[0033] The total content of the antifouling agent (hydrophilic copolymer and compound represented by general formula (1)) relative to 100 parts by mass of the resin component is preferably 1.0 parts by mass or more and 30.0 parts by mass or less, more preferably 1.5 parts by mass or more and 28.0 parts by mass or less, even more preferably 1.8 parts by mass or more and 26.0 parts by mass or less, and even more preferably 2.3 parts by mass or more and 26.5 parts by mass or less.

[0034] The antifouling agent contains a hydrophilic copolymer and a compound represented by general formula (1), and may contain a plurality of each of the hydrophilic copolymer and the compound represented by general formula (1). The ratio of the content of the compound represented by general formula (1) to the total content of the hydrophilic copolymer (total content (g) of hydrophilic copolymer / content (g) of the compound represented by general formula (1)) is preferably 0.10 or more and 20.00 or less, more preferably 0.15 or more and 18.00 or less, and even more preferably 0.20 or more and 17.00 or less.

[0035] (hydrophilic copolymer) The antifouling agent must contain the hydrophilic copolymer.

[0036] The hydrophilic copolymer preferably has a polyoxyethylene chain in its structure, which functions as a hydrophilic group, thereby exhibiting antistatic properties and suppressing the adhesion of hydrophilic dust stains.

[0037] The hydrophilic copolymer is preferably a hydrophilic polymer which is a copolymer of polyolefin and a monomer having a polyoxyethylene chain (hereinafter referred to as hydrophilic copolymer (a)), or polyether ester amide (hereinafter referred to as hydrophilic copolymer (b)).

[0038] The hydrophilic copolymer preferably contains one or both of the hydrophilic copolymer (a) and the hydrophilic copolymer (b). The hydrophilic copolymer (a) is a copolymer of polyolefin and polyoxyethylene, and the hydrophilic copolymer (b) is a copolymer of a polyamide-derived structure and polyoxyethylene. Such a structure is preferred because it provides excellent solubility in the resin components and exhibits excellent antifouling properties.

[0039] The weight average molecular weight (Mw) of the hydrophilic copolymer is preferably 1,000 or more and 800,000 or less in order to improve the solubility, antifouling properties, and durability of the antifouling agent described below.

[0040] The hydrophilic copolymer is a component for achieving excellent antifouling properties, and also has the effect of improving the solubility of the compound represented by general formula (1) described below in the resin component.

[0041] The content of the hydrophilic copolymer relative to 100 parts by mass of the resin component is preferably 1 part by mass or more and 20 parts by mass or less, and more preferably 1 part by mass or more and 17 parts by mass or less.

[0042] (Compound represented by general formula (1)) The antifouling agent must contain the compound represented by the general formula (1). The compound represented by the general formula (1) may be used alone or in combination of two or more.

[0043] Met(OH) m (OCO-R 11 ) n (1) (wherein Met represents a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum; R 11 represents an alkyl group having 1 to 40 carbon atoms, -CH2- in the alkyl group may be substituted with a cycloalkyl group or an aryl group, m represents 0, 1 or 2, n represents 1, 2 or 3, and m+n is the metal valence of the metal atom Met.

[0044] Higher antifouling properties can be achieved by using the compound represented by general formula (1) as the antifouling agent in addition to the hydrophilic copolymer and, if necessary, an antistatic agent described below.

[0045] Although the hydrophilic copolymer and the antistatic agent described below exhibit antifouling properties against hydrophilic dust, etc., they do not exhibit sufficient antifouling properties against hydrophobic dust, etc. Therefore, by further using the compound represented by general formula (1) in combination, excellent antifouling properties are exhibited as a synergistic effect.

[0046] Simply using the above-mentioned hydrophilic polymers or antistatic agents as additives can provide an effect of inhibiting the adhesion of hydrophilic dust stains, but on the other hand, the effect of inhibiting the adhesion of hydrophobic dust stains is low, so a new method is needed.

[0047] As mentioned above, it is known to use a photocatalytic substance as in Patent Document 1, and to use a polyorganosiloxane as in Patent Document 2, but it has been difficult to achieve antifouling properties in both hydrophilic and hydrophobic systems with either additive. In particular, the compound represented by general formula (1) is distributed at high concentrations in the resin component, particularly in the surface portion, and therefore is likely to exhibit antifouling properties, and the effects of the present invention are achieved by using it together with the hydrophilic copolymer and, if necessary, an antistatic agent as described below.

[0048] The compound represented by the general formula (1) is a fatty acid having a metal atom Met ( - OCO-R 11 ) salt.

[0049] The content of the compound represented by general formula (1) relative to 100 parts by mass of the resin component is preferably 0.5 parts by mass or more and 10 parts by mass or less, and more preferably 1 part by mass or more and 8 parts by mass or less.

[0050] ((R 11 )) In general formula (1), R 11represents an alkyl group having 1 to 40 carbon atoms, in which -CH2- may be substituted with a cycloalkyl group or an aryl group, and is preferably an alkyl group; R 11 The number of carbon atoms in the group is the portion that exhibits hydrophobic properties, and is more preferably 6 or more and 30 or less, even more preferably 11 or more and 27 or less, and even more preferably 15 or more and 20 or less.

[0051] In the present disclosure, hydrophobicity and hydrophilicity are defined as water- and oil-repellent if the contact angle with water is higher than that of petroleum or mineral oil, and hydrophobic if the contact angle with water is higher than 90 degrees.

[0052] The aforementioned - OCO-R 11 is an anion of a fatty acid, and the fatty acid is preferably caproic acid, capric acid, lauric acid, palmitic acid, stearic acid, behenic acid, lignoceric acid, montanic acid, oleic acid, or linoleic acid, more preferably stearic acid, behenic acid, or montanic acid, and even more preferably stearic acid from the viewpoint of availability.

[0053] (metal atom Met) In the general formula (1), Met is a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum.

[0054] In order to exhibit antifouling properties, Met is preferably a divalent or trivalent metal atom, more preferably zinc or aluminum, and most preferably aluminum.

[0055] In general formula (1), the sum of m and n means the metal valence of Met. A compound represented by general formula (1) necessarily has a fatty acid moiety, and n is not 0. If Met is a monovalent metal atom, m=0 and n=1; if it is a divalent metal atom, m=0 and n=2 or m=1 and n=1; if it is a trivalent metal atom, m=0 and n=3, m=1 and n=2, or m=2 and n=1. Of these, m=1 and n=1, and m=1 and n=2 are preferred.

[0056] In view of the above, the compound represented by general formula (1) is preferably zinc stearate, zinc 12-hydroxystearate, zinc laurate, zinc oleate, zinc 2-ethylhexanoate, aluminum tristearate, (dihydroxy)aluminum monostearate, (hydroxy)aluminum distearate, aluminum 12-hydroxystearate, aluminum laurate, aluminum oleate, or aluminum 2-ethylhexanoate, more preferably zinc stearate, aluminum tristearate, (dihydroxy)aluminum monostearate, or (hydroxy)aluminum distearate, and even more preferably (hydroxy)aluminum distearate.

[0057] <Other ingredients> The screen door net may further contain additives commonly used in the art, such as release agents, lubricants, plasticizers, antioxidants, antistatic agents, light stabilizers, UV-resistant agents, flame retardants, flame retardant aids, polymerization inhibitors, fillers, pigments, dyes, defoamers, fluorescent agents, chain transfer agents, and insect repellents, as other components, and more preferably contains antioxidants, UV-resistant agents, pigments, and insect repellents. In this embodiment, components other than the resin component and the antifouling agent are classified as other components.

[0058] The total content of the other components relative to 100 parts by mass of the resin component is not particularly limited as long as the effect of this embodiment is exhibited, but is preferably 0.5 parts by mass or more and 10 parts by mass or less, and more preferably 1 part by mass or more and 5 parts by mass or less.

[0059] The antifouling agent may further contain an antistatic agent other than the antifouling agent. As the antistatic agent, surfactants (anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants, etc.), ionic liquids, etc. are preferred in order to improve the effect of inhibiting adhesion of hydrophilic dust stains.

[0060] [Screen door] The screen door of this embodiment must be a screen door using the above-mentioned screen door net, which is preferable because it has excellent stain resistance, is easy to handle, and has excellent durability while also having the effect of preventing insects from entering the room.

[0061] The screen door is preferable because it is difficult for dust and the like to adhere to it, and even if dust and the like adheres to it during use, it can be easily removed, and this property can be evaluated, for example, by the method described in the Examples.

[0062] The durability of the net can be evaluated by its strength and elongation, which can be evaluated, for example, by a method conforming to JIS L 1096, and can be measured by the method described in the examples.

[0063] The effect of inhibiting the invasion of insects into a room can be adjusted by adjusting the mesh of the screen door net and by adding an insect repellent component to the warp or weft threads as appropriate.

[0064] [Method for manufacturing screen doors] The screen door can be manufactured by a general-purpose method using the screen door net.

[0065] <Method of manufacturing warp and weft yarns and method of manufacturing screen door net> At least one of the warp and weft yarns is a fiber containing the antifouling agent. The fiber can be produced by melt spinning, and the fiber containing the antifouling agent can be obtained by kneading the resin component and the antifouling agent, for example, in a kneader, and then melt spinning the mixture.

[0066] The fibers may be extruded staple, filament, tape yarn, or short cut fibers.

[0067] The fibers may be woven into a screen door net by suitable methods such as plain weave, raschel weave, or leno weave.

[0068] The resin layer, laminate, container and article of the present embodiment preferably satisfy the following items [1] to [9]. [1] Having warp and weft threads; At least one of the warp yarns and the weft yarns contains a resin component and a stain resistant agent, A screen door net containing one or more hydrophilic copolymers and one or more compounds represented by general formula (1) as the antifouling agent.

[0069] Met(OH) m (OCO-R 11 ) n (1) (wherein Met represents a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum; R 11 represents an alkyl group having 1 to 40 carbon atoms, -CH2- in the alkyl group may be substituted with a cycloalkyl group or an aryl group, m represents 0, 1 or 2, n represents 1, 2 or 3, and m+n is the metal valence of Met.

[0070] [2] The screen net according to [1], wherein the hydrophilic copolymer has a polyoxyethylene chain within its structure. [3] The screen net according to [1] or [2], wherein both the warp threads and the weft threads contain the resin component and the stain-resistant agent. [4] The screen door net according to any one of [1] to [3], wherein the resin component contains one or more thermoplastic resins. [5] The screen door net according to any one of [1] to [4], wherein the total content of the antifouling agent relative to 100 parts by mass of the resin component is 1.0 part by mass or more and 30.0 parts by mass or less. [6] The screen net according to any one of [1] to [5], wherein the resin component further contains one or more selected from a UV-resistant agent, an antioxidant, a pigment, and an insect repellent. [7] The screen net according to any one of [1] to [6], which has a mesh size of 10 or more and 50 or less. [8] The screen door net according to any one of [1] to [7], wherein the warp threads and the weft threads are 64 denier or more and 25,700 denier or less. [9] A screen door using the screen net described in any one of [1] to [8]. [Example]

[0071] The present invention will be described in more detail below using examples, but the present invention is not limited to the following examples.

[0072] (Evaluation method) 1. Strength and elongation test The strength and elongation test was carried out according to JIS L 1096:2010. Three test pieces measuring 25 mm x 200 mm were cut out from each of the screen door nets obtained in the Examples and Comparative Examples. The strength and elongation of the obtained specimens in the longitudinal and transverse directions were measured using a constant-speed extension tensile tester at a tensile speed of 100 mm / min and a grip spacing of 100 mm. Measurements were performed in the longitudinal and transverse directions of the test specimens. The longitudinal direction was the machine direction during net production, and the transverse direction was the width direction perpendicular to the longitudinal direction.

[0073] 2. Durability evaluation The longitudinal strength of the unused specimen was evaluated as the rate of change in the longitudinal strength of the specimen after 10 months (described below) (longitudinal strength of specimen after 10 months / longitudinal strength of unused specimen × 100 (%)).

[0074] 3. Measuring the amount of dirt attached The screen nets (unused) obtained in the examples and comparative examples were stretched over a 770mm x 970mm screen frame and left in an urban area for 10 months from August 2023, after which the amount of dirt that had accumulated was evaluated.

[0075] The amount of dirt adhesion was measured by removing the screen net from the screen frame (after 10 months of use) to prevent adhesions from scattering, measuring the mass (a) after 10 months, then washing with water to remove the dirt and measuring the mass again (b), and calculating the amount of dirt adhesion (ab), which was calculated as the amount of dirt adhesion per unit area. The obtained adhesion amounts (measured values) and adhesion amounts per unit area are summarized in Table 2. For reference, the percentages (%) of the adhesion amounts of Comparative Examples 1 and 2, when the adhesion amount per unit area of ​​Example 1 is taken as 100%, are also listed for comparison with Example 1.

[0076] 4. Stain resistance evaluation 3. The stains on the specimens obtained after 10 months in the stain adhesion measurement were visually evaluated.

[0077] Specifically, the background was white or black, and the results were visually evaluated into the following categories A to C. A: The stains are not noticeable whether the background is white or black. B: Dark stains are visible when the background is white, but the stains are not noticeable when the background is black. C: Dark stains were noticeable whether the background was white or black.

[0078] 5.Materials used (resin component) Polypropylene resin (PP resin): Polypropylene homopolymer (melting point 165°C) (Anti-fouling agent) Hydrophilic copolymer: Sanyo Chemical Industries, Pelektron HS (a block polymer of polyolefin and hydrophilic polymer (containing polyoxyethylene chains)) Compound represented by general formula (1): (hydroxy)aluminum distearate (in general formula (1), R 11 C 17 H 35 -, compounds where m is 1 and n is 2) (pigment) Manufactured by Nikko Bix Co., Ltd., Product Number: PP-ET5842

[0079] Example 1 100 parts by mass of the resin component, 12 parts by mass of the antifouling agent, and 4 parts by mass of the pigment were spun into monofilaments (320 denier) at a processing temperature of 240°C using a single-screw extruder to obtain resin fibers.

[0080] The resulting resin fibers were used as warp and weft threads to produce a 24-mesh screen door net with a square mesh of 0.84 mm on a side. (Comparative Example 1) A screen door net of Comparative Example 1 was produced in the same manner as in Example 1, except that 4 parts by mass of the pigment was used per 100 parts by mass of the resin component, and the antifouling agent was not used. (Comparative Example 2) 100 parts by mass of the resin component and 5 parts by mass of the pigment were spun into monofilaments (440 denier) at a processing temperature of 245° C. using a single-screw extruder to obtain resin fibers.

[0081] The resulting resin fibers were used as warp and weft threads to produce a plain weave screen door net with 18 meshes, each square with a side of 1.15 mm.

[0082] Tables 1 and 2 show the strength and elongation, durability, amount of dirt adhesion, and resistance to dirt in Example 1 and Comparative Examples 1 and 2.

[0083] [Table 1]

[0084] [Table 2]

[0085] It was found that the screen door net of Example 1 has excellent stain resistance, prevents the intrusion of insects and the like, and has excellent durability.

[0086] In contrast, the screen net of Comparative Example 1 differs from the screen net of Example 1 only in that it does not contain an antifouling agent, but it is inferior to the screen net of Example 1 in terms of resistance to dirt, with the amount of dirt adhesion being 1.3 times higher.

[0087] The screen door net of Comparative Example 2, like Comparative Example 1, does not contain an antifouling agent, and had a lower level of dirt adhesion than the net of Example 1. In addition, the mesh size was large at 1.15 mm, so it was less effective at preventing the intrusion of insects and the like. [Industrial Applicability]

[0088] The screen net of this embodiment and the screen using it have excellent stain resistance due to the use of an antifouling agent with a specific structure, and are therefore suitable for use as screens used in openings such as windows to prevent insects from entering the interior of a home, etc.

Claims

1. It has warp and weft threads, At least one of the warp yarns and the weft yarns contains a resin component and a stain resistant agent, A screen net for door screens, comprising one or more hydrophilic copolymers and one or more compounds represented by general formula (1) as the antifouling agent. *) ｍ ( . . .) １１ ) ｎ () (wherein Met represents a metal atom selected from lithium, calcium, magnesium, zinc, barium, and aluminum; R １１ represents an alkyl group having 1 to 40 carbon atoms, and —CH ２ - may be substituted with a cycloalkyl group or an aryl group, m represents 0, 1 or 2, n represents 1, 2 or 3, and m+n is the metal valence of Met.

2. 2. The door screen of claim 1, wherein the hydrophilic copolymer has polyoxyethylene chains within its structure.

3. The screen net according to claim 1 , wherein both the warp yarns and the weft yarns contain the resin component and the stain-proofing agent.

4. The screen net according to claim 1, wherein the resin component contains one or more thermoplastic resins.

5. The screen net according to claim 1, wherein the total content of the antifouling agent relative to 100 parts by mass of the resin component is 1.0 part by mass or more and 30.0 parts by mass or less.

6. The screen net according to claim 1, wherein the resin component further comprises one or more selected from the group consisting of a UV resistant agent, an antioxidant, a pigment, and an insect repellent.

7. 2. The screen net according to claim 1, which has a mesh size of 10 mesh or more and 50 mesh or less.

8. 2. The screen net according to claim 1, wherein the warp threads and the weft threads are 64 denier or more and 25,700 denier or less.

9. A screen door using the screen net according to claim 1.

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