JPH1058620A - Mesh sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To foam a mesh sheet coated with a vinyl chloride resin having an adhesion property, an antifouling property, and high frequency welder adhesiveness with good durability. SOLUTION: The mesh sheet is formed such as that a coating layer comprising a vinyl chloride resin as a main component is provided and an antifouling layer is disposed on the surface of the layer, wherein the antifouling layer is a layer formed of a composition comprising a fluorocarbon copolymer and a thermoplastic acrylic resin having a molecular weight of 30,000-200,000 consisting of (a) a 70-85mol% constitutional unit indicated by a formula-CH2 - CF2 -, (b) a 10-20mol% constitutional unit indicated by a formula-CF2 -CF2 -, and a constitutional unit, and (c) a 5-15mol% constitutional unit indicated by a formula -CF2 -CFCI-, and it can be treated by a high frequency welder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mesh sheet for construction work, a shatterproof sheet, a blind sheet and the like.

[0002]

2. Description of the Related Art Conventionally, construction mesh sheets and shatterproof mesh sheets used as substitutes for tarpaulins and the like in building construction sites and the like are well known. These are manufactured by coating a fabric woven or knitted with a spun yarn or long fiber yarn of vinylon, polyamide, polyester, aramid, polypropylene or the like with a vinyl chloride resin by a method such as dipping or coating. . Mesh sheets are often used in construction sites because they have better air permeability than tarpaulins, prevent wind pressure accidents, are lightweight and convenient, and have a function to give a beautiful appearance to the work site. In addition, the necessary properties as a mesh sheet for construction are tensile strength, tear strength, toughness, drop impact strength, flame resistance, abrasion resistance, water resistance,
In order to maintain the aesthetic appearance of the work site, antifouling property is a performance that is greatly required. In recent years, more colors have been used, the hue has exceeded 50 colors, and fashionability has also been required.

[0003] The reason why mesh sheets coated with a vinyl chloride-based paste sol composition are widely used is that they are excellent in workability and various processing methods can be adopted.
In addition, it can be adjusted to any flexibility by adjusting the plasticizer, good coloring properties with a pigment, and furthermore, a soft vinyl chloride resin can be sewn by high-frequency welder welding. As described above, the mesh sheet coated with the vinyl chloride paste sol composition has many advantages. There is a disadvantage that the agent migrates to the surface and becomes tacky and easily stained. What causes dirt on the construction site is:
Cement, mortar, coating resin, coating pigment, coating solvent,
There is a wide variety of smoke, exhaust gas, machine oil, earth and sand, etc., and mesh sheets have antifouling resistance against the causes of these dirts, and must be protected from dirt as well as chemical resistance and weather resistance are required. You.

Conventionally, various methods for solving the above-mentioned problems have been proposed for a polyvinyl chloride resin fabric for a mesh sheet, a tent and a track hood. Typical examples thereof include a method of coating the surface of a vinyl chloride resin with an acrylic resin such as a polyacrylate or a urethane resin, a method of coating with a fluoroelastomer (for example, JP-A-1-321980), Coating with a fluororesin (for example, JP-A-3-342430)
Etc. However, in the method of coating an acrylate resin or a urethane resin, the persistence of the effect is poor because the plasticizer in the vinyl chloride resin migrates to the surface through the resin layer. Further, the method of coating with a fluoroelastomer has disadvantages such as poor adhesion to a vinyl chloride resin, hard feeling, and insufficient durability and antifouling properties. In addition, the method of coating with a two-component fluororesin that uses a fluorine-based polyol and an isocyanate in combination has only the drawbacks such as poor adhesion and high-frequency welder adhesion, which is a characteristic of a vinyl chloride processed product. In addition, at present, a material having a sufficient surface hardness cannot be obtained due to a urethane structure, and excellent antifouling property cannot be obtained at present. A method that satisfies all of the antifouling performance, durability, workability, high-frequency welder adhesion, cost, and the like, including other methods, has not been found yet.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and has been made in consideration of the above-mentioned circumstances, and is a vinyl chloride paste having adhesion, excellent durability, antifouling property and high-frequency welder adhesion. It is intended to obtain a mesh sheet coated with the sol composition.

[0006]

The present invention achieves the above object and has the following constitution. The present invention provides: 1. A mesh sheet having a coating layer mainly composed of a vinyl chloride-based resin and an antifouling layer disposed on the surface of the coating layer, wherein the antifouling layer has the following formula: a) Formula —CH ₂ —CF ₂ — 8. 70 to 85 mol% of a structural unit represented by the formula: b) 10 to 20 mol% of a structural unit represented by the formula -CF ₂ -CF; and c) a structural unit represented by the formula -CF ₂ -CFCI- A layer formed of a composition comprising 5 to 15 mol% of a fluorine-based copolymer having a molecular weight of 30,000 to 200,000 and a thermoplastic acrylic resin, and capable of high-frequency welding. 1. A covering layer mainly composed of a vinyl chloride resin is provided,
In mesh sheet arranged an antifouling layer on the layer of the surface, stain resistant coating is a) formula -CH ₂ -CF ₂ - structural units represented by 70 to 85 mol%, b) formula -CF ₂ -CF ₂ - structural units 10-20 mol% represented by and, the structural unit 0.1 to a structural unit 9.5 to 15 mol% and d) fluoroolefin represented by c) formula -CF ₂ -CFCI-
0 mol% molecular weight 30,000-200,00
A mesh sheet, which is a layer formed of a composition comprising a fluorine-based copolymer and a thermoplastic acrylic resin, and is capable of high-frequency welding. 3. The thermoplastic acrylic resin has a weight average molecular weight of 10,
Item 3. The mesh sheet according to Item 1 or 2, which is a homo- or copolymer of 000 to 700,000 acrylate or methacrylate. 4. 4. The mesh sheet according to any one of items 1 to 3, wherein the antifouling layer is a layer formed by treating with a solution obtained by dissolving a fluorine-based copolymer and a thermoplastic acrylic resin in an organic solvent. 5. The thermoplastic acrylic resin is blended in an amount of 10 to 1900 parts by weight based on 100 parts by weight of the fluorocopolymer.
Item 5. The mesh sheet according to any one of Items 4 to 4. About.

Hereinafter, the present invention will be described in detail. The mesh sheet used in the present invention is obtained by coating a vinyl chloride paste sol composition on a fabric knitted and woven in a mesh shape, or by processing a vinyl chloride paste sol composition on yarn and then knitting and weaving. Say. Vinyl chloride paste resin is a vinyl chloride paste homopolymer and 10% of vinyl chloride monomer and other monomers such as vinyl acetate.
Hereinafter, it is a copolymer obtained by mixing and polymerizing. The vinyl chloride paste sol composition is produced by blending a stabilizer, a plasticizer, a flame retardant, a pigment, aluminum powder, glass beads, an ultraviolet absorber, and other additives. The yarn used for the mesh sheet may be any of spun yarn or long fiber yarn of natural fibers such as cotton and rayon, and synthetic fibers such as polyamide, polyester, polyaramid, vinylon, and polypropylene.

The mesh sheet of the present invention comprises: a) 70-85 mol% of a structural unit represented by the formula —CH ₂ —CF ₂ — on the surface of the vinyl chloride resin coating layer of the mesh sheet; 10 to 20 mol% of a structural unit represented by —CF ₂ —CF ₂ — and c) a molecular weight of 9.5 to 15 mol% composed of 9.5 to 15 mol% of a structural unit represented by the formula —CF ₂ —CFCI—. It is obtained by coating a layer formed of a composition comprising 200,000 fluorine-based copolymers and a thermoplastic acrylic resin. The sheet is preferably treated with a solution of the fluorine-based copolymer and the thermoplastic acrylic resin dissolved in an organic solvent to form an antifouling layer on the surface of the layer mainly composed of the vinyl chloride-based resin.

The proportion of these structural units in the fluorocopolymer is as follows: a) 70 to 85 mol%, b) 10 to
20 mol%, c) 9.5 to 15 mol%, and a molecular weight of 30,000 to 200,000 makes the softening point of the copolymer 40 ° C. or higher, improves heat resistance, and further improves the organic solvent. Sol. a) is 7
When the content is less than 0 mol%, the content of b) and c) increases, resulting in poor solubility in an organic solvent. When the content is more than 85 mol%, the compound exhibits crystallinity and becomes insoluble.
When the content of b) is less than 10 mol%, the flexibility is adversely affected, and when it is more than 20 mol%, there is a concern about solubility in an organic solvent. The content of c) is 9.5 mol%.
If the amount is less than the above, the solubility in the organic solvent is reduced. If the amount is more than 15 mol%, sufficient surface hardness cannot be obtained.

In addition to the above structural units a) to c),
d) The structural unit consisting of fluoroolefin is 0.1 to 1
The fluorine-based copolymer copolymerized at a ratio of 0 mol% is more excellent in solubility in an organic solvent, and the compatibility with an acrylic resin is further improved. If less than 0.1 mol%,
The above-mentioned effects are not exhibited, and when it exceeds 10 mol%, the solubility of the copolymer in an organic solvent is reduced, the surface of the obtained coating film becomes soft and scratches are easily formed, and the stain resistance is improved. Etc. may be hindered.

These fluoroolefins include trifluoroethylene (TrFE), vinyl fluoride (VF),
Examples include propylene hexafluoride (HFP) and perfluoroalkyl vinyl ether (PAVE). The fluorine-based copolymer used in the present invention is usually vinylidene fluoride, emulsion polymerization, suspension polymerization or solution polymerization.
It is prepared by copolymerizing ethylene fluoride, ethylene trifluoride or vinylidene fluoride, ethylene tetrafluoride, ethylene trifluoride chloride and fluoroolefin. The polymerization temperature is usually about 0 to 150 ° C. in any polymerization method,
Preferably it is about 5 to 95 ° C. The polymerization pressure is usually about 1 to 50 kgf / cm ^{2 in} any polymerization method. In addition, the polymerization medium is water in the emulsion polymerization method, and the water is in the suspension polymerization method,
Solution weight such as chlorofluorohydrocarbons such as 1,1,2-trichloro-1,2,2-trifluoroethane, 1,2-dichloro-1,1,2,2-tetrafluoroethylene or a mixture thereof. In the legal case, it is also ethyl acetate, butyl acetate or a mixture thereof. Emulsifiers in the emulsion polymerization method include, for example, C ₇ F ₁₅ COONH ₄ , H (C
F ₂ ) ₈ COONH ₄ , H (CF ₂ ) ₆ COONH ₄ ,
C ₇ F ₁₅ COONa and the like. In emulsion polymerization, a polymerization initiator is a redox initiator comprising an oxidizing agent (eg, ammonium persulfate, potassium persulfate, etc.), a reducing agent (eg, sodium sulfite, etc.) and a transition metal complex salt (eg, iron sulfate, etc.), a suspension and solution polymerization method. For azo compounds and organic peroxides (eg, azobisisobutyronitrile, isobutyryl peroxide, octanoyl peroxide, di-
Iso-propyl peroxycarbonate).

The molecular weight of the fluorinated copolymer thus adjusted is 30,000 to 200,000. 3
If it is less than 000, the coating becomes brittle and cracks tend to occur. If it is more than 200,000, physical properties such as viscosity increase and workability deteriorates. The organic solvent in the present invention is not particularly limited, but is preferably a ketone or an ester having a boiling point of about 50 to 250 ° C. in terms of solubility, for example, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone,
Examples thereof include butyl acetate and ethyl acetate, and one or more of these can be used. Besides these, tetrahydrofuran, dimethylformamide, dimethylacetamide and the like can also be used. If necessary, aromatics such as toluene and xylene and alcohols can be added.

These solvents are capable of dissolving the above-mentioned fluorine-based copolymer in a satisfactory manner to obtain a coating composition in a wide concentration range from a low concentration to a high concentration, and the resulting coating film has excellent gloss and weather resistance. It will be. The mixing ratio of the resin of the fluorinated copolymer and the organic solvent in the present invention is not particularly limited, and the solid concentration of the resin is usually about 5 to 50% by weight,
Preferably, the content should be about 30 to 50% by weight. The mixing method is not particularly limited, and any conventional method may be used. For example, the mixing may be sufficiently performed using a ball mill, a paint shaker, a sand mill, or the like. For mixing, known additives used in paints such as pigments, viscosity modifiers, leveling agents, ultraviolet absorbers, anti-burr agents, flame retardants, dispersants and defoamers are added as needed. Can be.

Further, in the present invention, a thermoplastic acrylic resin is added to the fluorocopolymer in order to improve the dispersibility and adhesion of each component in the composition, but the thermoplastic acrylic resin is not particularly limited. Known ones can be used. The thermoplastic acrylic resin referred to here is generally a non-curable acrylic resin having no reactive group. Specifically, methyl methacrylate (MM
A), homopolymers of methacrylates and acrylates such as ethyl methacrylate (EMA), n-butyl methacrylate (BMA), isobutyl methacrylate (IBMA), methyl acrylate (MA), and ethyl acrylate (EA); These copolymers can be mentioned, and one or more of these polymers can be used. The weight average molecular weight of these acrylic resins is desirably about 10,000 to 700,000. Preferably it is in the range of 15,000 to 50,000. When it is less than 10,000, the coating becomes brittle and adversely affects the weather resistance, and when it is more than 700,000, physical properties such as viscosity increase and workability becomes difficult. The resin in which the acrylic resin and the fluorine-based copolymer are used in combination has good solubility in an organic solvent, and the resulting coating film has excellent gloss and weather resistance.

The amount of the acrylic resin is about 10 to 1900 parts by weight, preferably about 10 to 400 parts by weight, based on 100 parts by weight of the fluorocopolymer. If the amount is less than 10 parts by weight, the adhesion to the coating will be poor, and if it is more than 1900 parts by weight, the resulting film will be hard and workability will be adversely affected.

A composition using a thermosetting acrylic resin having a reactive group becomes two-part since it is necessary to cure the group with a curing agent at the time of application at room temperature or by heating. Must be mixed in a strict mixing ratio. On the other hand, when a thermoplastic acrylic resin is used, the necessity is eliminated and the practicality is excellent. In addition, there is an advantage that the lamination can be performed when the amount of adhesion is small, the pot life is lengthened, and long-term storage is possible.

As a method for coating a vinyl chloride resin processed cloth with the prepared mixed resin, a method such as dipping, gravure coating or knife coating can be adopted. The amount of adhesion is 1 to 40 g / m ² in solid content and 1 g / m 2
^In the case of ² , the effect of the present invention cannot be sufficiently exhibited, and when it is more than 40 g / m ² , cracks occur, making it impossible to apply uniformly.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION As in the present invention, the surface of a vinyl chloride resin coating layer is a) 70-85 mol% of a structural unit represented by the formula —CH ₂ —CF ₂ —, b) a formula —CF ₂ — A fluorine-based copolymer and a thermoplastic acrylic resin each comprising 10 to 20 mol% of a structural unit represented by CF _2- and c) 9.5 to 15 mol% of a structural unit represented by the formula -CF ₂ -CFCI- Is dissolved in an organic solvent, or the structural units a) to c) above, and d) a fluoroolefin structural unit of 0.1 to 10
When coated with a composition dissolved in an organic solvent composed of a fluorine-based copolymer having a molecular weight of 30,000 to 200,000 and a thermoplastic acrylic resin added with mol%, the adhesiveness is good and the durability is excellent. A mesh sheet coated with a vinyl chloride resin having antifouling properties and high-frequency welder adhesion can be obtained.

[0019]

Next, the present invention will be described in detail with reference to examples.

Production Example of Mesh Sheet Coated with Vinyl Chloride Resin Polyester multifilament 1 for both warp and weft
Using 500d / 140f, weaving a woven fabric having a density of 33 warps / inch and 33 wefts / inch with a complete mosaic structure of 33 yarns / inch, and using this as a base fabric, a vinyl chloride paste sol composition of the following composition Dipping process (application amount 30
(0 g / m ² , drying temperature 100 ° C.) and baking at 190 ° C. to obtain a vinyl chloride resin-coated mesh sheet. Vinyl chloride paste sol composition Vinyl chloride paste (P = 1600) resin 100 parts by weight DOP 50 parts by weight TCP 8 parts by weight Antimony trioxide 20 parts by weight Barium / zinc liquid stabilizer 3 parts by weight Adeka-O-130P 3 parts by weight Parts pigment 5 parts by weight

Preparation Example 1 of Resin Solution Referring to JP-A-4-189879, 700 g of water, 1180 g of 1,2-dichloro-1,1,2,2-teorafluoroethane and 1180 g of a transfer agent were placed in a 3.5-liter autoclave. After charging 5 g of ethyl acetate and purging the space of the autoclave with nitrogen, vinylidene fluoride (Vd
F) 75.2 g, tetrafluoroethylene (TFE) 10.6
g, chlorotrifluoroethylene (CTFE) 1.5 g
Was charged. The autoclave was heated to 40 ° C., and after sufficiently stirring, 2.5 ml of diisopropyl peroxycarbonate was added.
g was added to initiate polymerization. The polymerization pressure is 8.0 kgf /
so that the ^{cm 2 VdF / TFE / CTFE =} 80 /
Polymerization was carried out for 12 hours while supplying a mixture of 10/10 (mol%). Thereafter, the produced copolymer was fractionated, and 8
Drying at 0 ° C. under reduced pressure gave 200 g of the copolymer. 20 parts by weight of a solution prepared by adjusting the copolymer to 50% by weight in methyl ethyl ketone, and a 67/33% by mole copolymer of methyl methacrylate (MMA) and ethyl acrylate (EA), and a resin having a weight average molecular weight of 80,000. 20% acetic acid n
15 parts by weight of a 20% by weight solution of -butyl were mixed on a paint shaker for 2 hours. Finally, butyl acetate / toluene (5/5) was used to adjust the solid content to 12% by weight.

Resin Solution Adjusters 2 to 6 Copolymers having the compositions shown in Table 1 were prepared in the same procedure as in Resin Solution Preparation Example 1. Thereafter, the copolymer was adjusted to 12% by weight with butyl acetate / toluene (5/5). As an acrylic resin different from that of Example 1, a 95/5 mol% copolymer (weight average molecular weight: 26,000) of methyl methacrylate (MMA) and tertiary butyl methacrylate (t-BMA) was used.

Resin Solution Preparation Examples 7 to 10 Copolymers having the compositions shown in Table 1 were prepared in the same procedure as in Resin Solution Preparation Example 1. Then butyl acetate / toluene (5 /
In 5), the solid content concentration was adjusted to 12% by weight. Resin solution preparation example 11 MMA / EA (67/33 mol%)
It was adjusted to 12% by weight with a toluene (5/5) solution to obtain a resin solution used in Comparative Example 5. Resin Solution Preparation Example 12 Butyl acetate / toluene was added to a resin solution obtained by mixing 20 parts by weight of Fluorotop FT-1033 (fluororesin, manufactured by Asahi Glass Co., Ltd.) and 4 parts by weight of a fluorotop hardener (isocyanate, manufactured by Asahi Glass Co., Ltd.). (5/5) 12 in solution
It was adjusted to be% by weight to obtain a resin solution used in Comparative Example 6.

[0024]

[Table 1]

(Note) In Table 1, VdF: vinylidene fluoride TFE: ethylene tetrafluoride CTFE: chlorotrifluoroethylene TrFE: HFP: MMA: methyl methacrylate EA: ethyl acrylate tBMA: tertiary butyl methacrylate FT: fluorotop FT- 1033 (fluororesin, Asahi Glass Co., Ltd.) 20 parts and fluorotop hardener (isocyanate, Asahi Glass Co., Ltd.) 4 parts mixture

Example 1 The vinyl chloride resin-coated mesh sheet obtained in the production example of the mesh sheet was immersed in the mixed solution of the fluororesin and the acrylic resin obtained in the resin solution preparation example 1, and the squeezing ratio was set to 20 using a mangle.
% (Solid content conversion amount: 5 g / m ² ), dried at 80 ° C., and heat-treated at 140 ° C./1 minute to obtain a mesh sheet.

Examples 2 to 6 A mesh sheet was obtained in the same manner as in Example 1 except that the resin solutions obtained in Resin Solution Preparation Examples 2 to 6 were used.

Comparative Examples 1 to 4 Mesh sheets were obtained in the same manner as in Example 1 except that the resin solutions obtained in Resin Solution Preparation Examples 7 to 10 were used.

Comparative Example 5 A mesh sheet was obtained in the same manner as in Example 1 except that the resin solution obtained in Resin Solution Preparation Example 11 was used.

Comparative Example 6 A mesh sheet was obtained in the same manner as in Example 1 except that the resin solution obtained in Resin Solution Preparation Example 12 was used.

An evaluation test for evaluating the effect of the present invention was performed as follows. (1) Antifouling test: A sample was put into a dirt compound having the following composition, and the mixture was stirred for 48 hours with a shaker.
The sample was taken out in a thermostat at 6 ° C. for 6 months. The sample was taken out, washed with water, and the surface thereof was observed. . Further, in order to examine the washing resistance, a similar test was performed after washing 10 times. Composition of dirt compound Peat moss 38% by weight Cement 17% by weight Kaolin clay 17% by weight Silica gel 17% by weight Carbon black 1.75% by weight Iron oxide 0.5% by weight Mineral oil (Heavy oil A) 8.75% by weight

(2) Abrasion test (adhesion test): JI
According to SK-6722, using a Scott abrasion tester, a pair of two samples were fixed in the middle table between the grips, the pressing load of both grips was 2 kgf, and the distance between 4 cm was 12 mm.
A reciprocating friction was performed 500 times at a rate of 0 ± 2 times / minute, and the peeled state was evaluated by a five-point scale. The above two evaluation tests show that the larger the number in Table 1, the better the performance.

(3) High-frequency welder test (welder tensile strength): A sample subjected to high-frequency welder processing using a mold having a width of 3 cm and a length of 10 cm was collected to a width of 1 cm.
The tensile strength was measured according to JIS-L-1096.

Table 2 shows the results of the evaluation test.

[0035]

[Table 2]

As is clear from Table 2, the antifouling compositions for coating of Examples 1 to 6 had better adhesion than those of Comparative Examples 1 to 6 from the results of the abrasion resistance test, and showed durability. It was confirmed to have excellent antifouling property and high frequency welder adhesion. Compared to Comparative Example 5 using only an acrylic resin and the two-component fluorine-based copolymer, it was confirmed that the resin had excellent antifouling properties.

[0037]

The mesh sheet according to the present invention, in which a coating made of a special fluororesin and a thermoplastic acrylic resin is formed on the coating layer containing vinyl chloride resin as a main component, is made of a vinyl chloride resin, a fluororesin and an acrylic resin. It has good adhesion to the layer, and exhibits an antifouling effect with excellent durability and good high-frequency welder adhesion.

Claims (5)

[Claims] 1. A mesh sheet in which a coating layer mainly composed of a vinyl chloride resin is provided, and an antifouling layer is disposed on the surface of the coating layer, wherein the antifouling layer is represented by a) Formula —CH ₂ —CF ₂ —. 8. 70 to 85 mol% of a structural unit represented by the formula: b) 10 to 20 mol% of a structural unit represented by the formula -CF ₂ -CF _2- and c) a structural unit represented by the formula -CF ₂ -CFCI- A layer formed of a composition comprising 5 to 15 mol% of a fluorine-based copolymer having a molecular weight of 30,000 to 200,000 and a thermoplastic acrylic resin, and capable of high-frequency welding. Mesh sheet. 2. A mesh sheet provided with a coating layer mainly composed of a vinyl chloride resin and having an antifouling layer disposed on the surface of the layer, wherein the antifouling layer is represented by the following formula: -CH ₂ -CF _2- 70 to 85 mol% of a structural unit represented by the formula: b) 10 to 20 mol% of a structural unit represented by the formula -CF ₂ -CF _2- and c) a structural unit represented by the formula -CF ₂ -CFCI- 9.5 To 15 mol% and d) a structural unit consisting of a fluoroolefin 0.1 to 1
0 mol% molecular weight 30,000-200,00
A mesh sheet, which is a layer formed of a composition comprising a fluorine-based copolymer and a thermoplastic acrylic resin, and is capable of high-frequency welding. 3. The thermoplastic acrylic resin is a homo- or copolymer of an acrylate or methacrylate having a weight average molecular weight of 10,000 to 700,000.
The mesh sheet according to claim 1. 4. The antifouling layer according to claim 1, wherein the antifouling layer is a layer formed by treating with a solution in which a fluorine-based copolymer and a thermoplastic acrylic resin are dissolved in an organic solvent. Mesh sheet. 5. The mesh sheet according to claim 1, wherein the blending amount of the thermoplastic acrylic resin is 10 to 1900 parts by weight based on 100 parts by weight of the fluorocopolymer.