JP2008163471A - Fiber structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fiber structure which has an antistatic property, a water-repelling property, functions comprising a pollen adhesion-preventing property, and a mud-preventing property. <P>SOLUTION: This fiber structure has a resin coating film containing polymerizable monomer having two or more acryl and/or methacryl groups at both the terminals or one terminal of a main chain consisting mainly of a polyalkylene oxide segment or on the side chain of the main chain as a polymerization component, on the surface of a single fiber, contains a fluorine-based water-repelling, oil-repelling agent in the coating film, has a water-repelling degree of the fourth grade or higher, and contains inorganic fine particles and/or organic fine particles in the coating film. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a fiber structure that has both durable antistatic properties and water repellency, both of which have been difficult to achieve together, and has antifouling properties, specifically pollen adhesion prevention properties and mud antifouling properties. About.

  The fiber fabric has antistatic properties as an essential function required when it is worn not only during sewing but also as clothing. If the garment is an outer garment such as a coat or a blouson, the garment may get wet due to rain, snow, etc., and functions such as water repellency and antifouling properties are required. In addition, these outer garments are often worn in early spring, and due to the increase in the number of hay fever patients over the past few years, even the ability to adhere to pollen is required.

  However, satisfying both the antistatic property obtained by hydrophilizing the fiber and the performance that dirt is easily removed by washing, and the water repellency obtained by hydrophobizing the fiber and the performance that is difficult to get dirty. Is very difficult, and it is very difficult to make it more durable in addition to such performance. In addition, it was even more difficult to obtain a fiber structure that also had pollen adhesion prevention performance.

  As an antistatic and water repellent processing method for a fiber structure, a fabric mainly composed of polyester fibers to which an antistatic polymer having no water repellent agent is fixed, and at least one of the antistatic polymer is used. Part is coated with a water-repellent polymer and water-repellent polyester fabric with improved antistatic durability (see Patent Document 1), a fiber fabric having a film comprising a water-repellent agent and a graft polymer, or the polymer film On top of this, there is known a method for producing a fiber fabric treated with a solvent-based treatment liquid further containing a water repellent (see Patent Document 2).

  For preventing pollen adhesion, the fiber structure fabric is treated with a processing agent containing colloidal silica fine particles, and the colloidal silica fine particles are uniformly adhered to the surface of the fabric (see Patent Document 3). Etc. have been proposed.

  However, in order to obtain high water repellency, a fiber fabric to which an antistatic polymer is fixed as in Patent Document 1, and at least a part of the antistatic polymer is coated with a water repellent polymer. As for the coating film, the hydrophilic coating film and the water-repellent resin coating film have contradictory properties, so that the adhesion between the two coating films was poor and it was difficult to obtain durability.

  Moreover, it is difficult to make the performance which has the characteristic which contradicts in one coating called the fiber fabric which has a film which consists of a water repellent and a graft polymer like patent document 2, and the durability of a film is inferior. Similarly, in the method for producing a fiber fabric in which the polymer coating is further treated with a solvent-based treatment liquid containing a water repellent, the durability of the polymer coating is also inferior, and the polymer coating itself has water repellency. For this reason, the water repellent agent to be further applied needs to be treated with a solvent-based treatment liquid. For example, the workability is very poor, and the adhesion between the two layers is poor and it is difficult to obtain durability.

  In addition, as described in Patent Document 3 proposed for preventing pollen adherence, those in which fine particles of colloidal silica are uniformly adhered to the surface of the cloth have the performance of being difficult to pollen and easy to fall off, but washing durability In addition to the lack of anti-static performance, pollen adsorption was likely to occur due to static electricity.

Further, as for mud dirt removal properties, those focusing on the ionicity and zeta potential of the fiber surface have been proposed (see Patent Documents 4 and 5), but the surface is hydrophilized and is water and oil repellency. The application was limited.
Japanese Patent No. 3133227 Japanese Patent No. 3615827 JP 2004-3046 A JP2003-227072A JP 2004-137617 A

  In view of the background of the prior art, the present invention is intended to provide a fiber structure having antistatic properties and water repellency, and also functions of preventing pollen adhesion and antifouling.

In order to solve the above problems, the present invention employs the following means.
(1) A polymerizable monomer having two or more acrylic groups and / or methacrylic groups as both ends or one end of the main chain or a side chain of the main chain mainly composed of a polyalkylene oxide segment on the surface of a single fiber A polymer film containing a resin film containing a fluorine-based water and oil repellent agent, having a water repellency of 4 or more, and further containing inorganic fine particles and A fiber structure containing organic fine particles.
(2) The fiber structure as described in 1 above, wherein the frictional voltage after 10 washes is 2 kv or less and the water repellency is 3 or more.
(3) The fiber structure according to 1 or 2, wherein the fluorine-based water / oil repellent is at least one of organic fluorine-based compounds represented by the following general formula.

(4) The fiber structure according to any one of 1 to 3, which is the inorganic fine particle silicon oxide.
(5) The fiber structure according to any one of (1) to (4), wherein the resin film contains an aminoplast resin and / or an isocyanate compound.
(6) The fiber structure according to any one of the above 1 to 5, which is a fabric having a number of pseudo pollens adhering to the fiber structure surface of 250 or less as measured by the following measurement method.
(Measuring method)
Thirty pieces of 7 × 7 cm fiber fabrics are left in an environment of 20 ° C. × 65% RH for 24 hours, placed in a polyethylene bag together with 1 g of artificial pollen, and about 20 liters in air at 20 ° C. × 65% RH. Inflate and bind mouth. The polyethylene bag was tied at a speed of 1 sec / sec and shaken up and down 100 times with respect to the mouth, and then the fiber fabric was taken out, and three photographs of the fiber fabric surface magnified 50 times were taken. Count the number of x10 cm pseudo-pollen and calculate the average of the three locations.
(7) The fiber structure according to any one of the above items 1 to 6, wherein the antifouling property when measured by the following measurement method is 4th or higher.
(Measuring method)
Red jade soil / ordinary soil / water is collected at a 1/1/1 weight ratio, placed in a mortar and pulverized and mixed to prepare the mud for contamination. 20 g of the stain is applied to a 10 cm × 10 cm fabric surface with a knife coater and left for 24 hours, and then the stain is struck by hand, washed by the method prescribed in the JIS L0217-103 method, and contaminated. The grade is determined with a gray scale for contamination.
(8) A garment using the fiber structure according to any one of 1 to 7 above.

  According to the present invention, the fiber structure can be stably supplied when it has antistatic properties and water repellency with durability to washing. Furthermore, it is also possible to make the fiber structure also have pollen adhesion prevention performance and mud prevention performance.

  The present invention, as a result of intensive studies on the above-mentioned problem, that is, imparting a function having both antistatic properties and water repellency excellent in washing durability, revealed that the antistatic polymer and the fluorine-based water-repellent repellency were formed on the single fiber surface. It was clarified that this problem can be solved at once by forming a film mixed with an oil agent.

  Examples of the monomer having two or more acrylic groups and / or methacrylic groups as both ends or one end of the main chain mainly composed of the polyalkylene oxide segment of the present invention or a side chain of the main chain include polyethylene glycol diester. Acrylate, polyethylene glycol dimethacrylate, polyethylene glycol-polypropylene glycol dimethacrylate, polyethylene glycol-polypropylene glycol diacrylate, ethylene oxide adduct dimethacrylate of bisphenol A, ethylene oxide adduct diacrylate of bisphenol A, propylene oxide adduct of bisphenol A Dimethacrylate, propylene oxide adduct diacrylate of bisphenol A, etc., alone or as a mixture of two or more It can be used.

  The water / oil repellent of the present invention can be used as long as the water repellency is 4th or higher. For example, an acrylate-based compound containing a perfluoroalkyl group represented by the following general formula,

A polymer or copolymer having a polymerization unit of a (meth) acrylic acid ester having a fluoroalkyl group as an essential polymerization unit is preferably used. The polymer having a polymerization unit of (meth) acrylic acid ester having a fluoroalkyl group as an essential component is a compound in which a fluoroalkyl group is present in the alcohol residue part of (meth) acrylic acid ester. Such a fluoroalkyl group refers to a group in which two or more hydrogen atoms of an alkyl group are substituted with fluorine atoms. 1-20 are preferable and, as for carbon number of a fluoroalkyl group, 6-16 are especially preferable. The fluoroalkyl group is preferably a linear or branched group. In the case of a branched group, it is preferable that the branched portion is present at the terminal portion of the fluoroalkyl group and is a short chain having about 1 to 4 carbon atoms. Further, the fluoroalkyl group is preferably a group in which all of the hydrogen atoms of the alkyl group are substituted with fluorine atoms (that is, a perfluoroalkyl group) or a group having a perfluoroalkyl group at the terminal portion. In the case of a perfluoroalkyl group, the carbon number is preferably 1-20, and particularly preferably 4-16. When the number of carbon atoms is less than 4, the water repellency of the processing agent composition tends to decrease. When the number is more than 16, the copolymer becomes solid at room temperature, has high sublimation properties, and is difficult to handle. There is a fear. The polymer essentially including a polymer unit of (meth) acrylic acid ester having such a fluoroalkyl group may contain one or more of such polymer units. In addition, a compound having a hydrophilic group such as an OH group, a COOH group, or an NH2 group in the molecule or a compound having a polyalkylene glycol segment may be contained within a range that does not inhibit the effect of the present invention.
The solid content weight blending ratio of the polymerizable monomer of the present invention and the fluorine-based water and oil repellent resin is 10 to 30/5 to 30, preferably 0.1 to 10% by weight per fiber weight.

  Fine particles may be mixed in the film of the present invention. The fine particles are inorganic fine particles or organic fine particles, which can be used in combination. Examples of the inorganic fine particles include aluminum oxide, silicon oxide, titanium oxide, kaolin, bentonite, talc, calcium carbonate, calcium silicate, magnesium oxide, and the like. These may be used alone or in combination of two or more as an aqueous dispersion. Is preferred. Of these, silicon oxide is preferably used. The average particle diameter of the particles is preferably 5 to 500 nm, more preferably 10 to 100 nm.

The organic fine particles of the present invention are particles made of an olefin resin, an acrylic resin or a urethane resin, and are polyethylene, polypropylene, ethylene / α-olefin copolymer, ethylene / acrylic acid copolymer, ethylene / methacrylic acid. Examples thereof include a copolymer and an ethylene / vinyl acetate copolymer. The average particle diameter of the particles is preferably 0.05 to 5 μm, more preferably 0.1 to 2 μm. In addition, composite particles obtained by coating the surface of organic fine particles with silica or alumina can also be used.
By adding such particles, the formability of the antistatic resin film is improved, and a tough film can be obtained and durability can be enhanced. Furthermore, since fine irregularities are formed on the surface of the resin film by the particles, it is possible to further enhance pollen adhesion prevention and shedding.

  In the present invention, the solid content weight ratio of the polymerizable monomer, the fluorine-based water / oil repellent and the inorganic fine particles is 10 to 30/10 to 30/1 to 10, and 0.5 to 5 weight per fiber weight. % Is preferred.

  In the present invention, a mixture of a catalyst in an aqueous liquid in which a polymerizable monomer, a fluorine-based water / oil repellent or fine particles are mixed is applied onto the fiber, and then heat treatment is performed to form a polymer film. Examples of such catalysts include acetic acid, formic acid, acrylic acid, malic acid, tartaric acid, maleic acid, phthalic acid, sulfuric acid, persulfuric acid, hydrochloric acid, phosphoric acid and the like, and ammonium salts, sodium salts, potassium salts, magnesium salts thereof, and the like. Yes, one or more of these can be used. Of these, ammonium persulfate and potassium persulfate can be preferably used. Such a catalyst is preferably used in a proportion of 0.1 to 20% by weight based on the amount of the polymerizable monomer used.

  The heat treatment for the polymerization is preferably a dry heat treatment or a steam heat treatment at a temperature of 50 to 180 ° C. for 0.1 to 30 minutes. The steam heat treatment forms a uniform film on the fiber surface. Easy, high film strength and flexible texture. For steaming, saturated steam or superheated steam at 80 to 160 ° C. is preferably used. More preferable saturated water vapor is 90 to 130 ° C., and superheated water vapor is 110 to 160 ° C., both of which perform treatment for several seconds to several minutes. After such steaming and heat treatment, in order to remove unreacted monomers and catalysts, and to ensure dyeing fastness, washing with hot water at a temperature of 50 to 95 ° C., nonionic surfactant, sodium carbonate, hydrosal It is preferable to perform cleaning using a fight or the like.

  The resin film of the present invention preferably has a thickness of 5 to 100 nm when observed using a transmission electron microscope (TEM) at a magnification of 100000 times.

The resin film of the present invention preferably contains at least one of an aminoplast resin and a polyfunctional isocyanate compound. Examples of aminoplast resins include melamine resins such as trimethylol melamine and hexamethylol melamine, urea resins such as dimethylol propylene urea, dimethylol ethylene urea, and dimethylol hydroxy urea, and uron resins such as dimethylol uron. Hexamethylol melamine and trimethylol melamine are preferably used. The polyfunctional isocyanate-based compound is not particularly limited as long as it is an organic compound containing two or more isocyanate functional groups in the molecule. Tolylene diisocyanate, hexamethylene diisocyanate, diphenylmethane diisocyanate, hydrogenated diisocyanate. Examples include phenyl methane diisocyanate, triphenyl triisocyanate, xylene diisocyanate, and dichloromethane diisocyanate. In addition, phenol and diethyl malonate, which are blocking compounds (compounds that regenerate isocyanate groups by heating to 70 to 200 ° C. together with isocyanate adducts) such as trimethylolpropane tolylene diisocyanate adducts and fryserin tolylene diisocyanate adducts Examples thereof include polyfunctional block isocyanate urethane resins obtained by reacting an ester, methyl ethyl ketoxime, sodium bisulfite, ε-caprolactam and the like. As the dissociation catalyst used for promoting the improvement of the thermal separation rate of the blocked isocyanate and the reduction of the thermal dissociation temperature, dibutyltin diolate, dibutyltin stearate, stearyl zinc and organic amine compounds are preferred. Mixing of such a mixture has an effect of enhancing the durability of the fluorine-based water / oil repellent, and has a concentration of 0.01 to 1% by weight in the polymerizable monomer, the fluorine-based water / oil repellent and the inorganic fine particle blending treatment liquid. Can be mixed.
The fiber structure of the present invention preferably has a frictional voltage of 2 kv or less after 10 washings and a water repellency of 3 or more.
In addition, the fiber structure of the present invention preferably has a mud antifouling property of 4th grade or higher when measured by the following measurement method.
(Measuring method)
Red jade soil / black soil / water is collected at a 1/1/1 weight ratio, placed in a mortar and pulverized and mixed to prepare a mud for contamination. 20 g of the stain is applied to a 10 cm × 10 cm fabric surface with a knife coater and left for 24 hours, and then the stain is struck by hand, washed by the method prescribed in the JIS L0217-103 method, and contaminated. The grade is determined with a gray scale for contamination.
The fiber structure of the present invention has pollen adhesion preventing performance in addition to durable antistatic and water / oil repellency. When the following pollen adhesion prevention performance evaluation using pseudo pollen is performed, it is preferable that the average number of three places is 250 or less. When the number of deposits exceeds 250, pollen adhesion is clearly confirmed when the fabric surface is viewed with the naked eye, and it is difficult to say that pollen is difficult to adhere.
The pollen adhesion prevention performance evaluation using pseudo pollen will be described below.
Pseudo-pollen refers to a natural product similar to the particle size of pollen called Ishimatsuko (manufactured by Tsuda Shoten). Ishimatsuko is a spore of a fern family genus Kazura with a particle size of 30 to 40 μm and has a particle size and shape close to that of pollen. It is possible to confirm the prevention of pollen adhesion by using this Ishimatsuko as a pseudo pollen. Thirty pieces of 7 × 7 cm fiber fabrics are allowed to stand in an environment of 20 ° C. × 65% RH for 24 hours, placed in a polyethylene bag with 1 g of artificial pollen, and about 20 liters in air of 20 ° C. × 65% RH. Inflate and bind mouth. The polyethylene bag was tied at a speed of 1 sec / sec and shaken up and down 100 times with respect to the mouth, and then the fiber fabric was taken out. Count the number of pseudo pollen within the range of 5 × 10 cm and calculate the average of 3 places.

  The fiber structure of the present invention preferably has a mud antifouling performance in addition to durable antistatic and water / oil repellency. The effects of the present invention preferably have the following performance when evaluated by the following method. Red jade soil / ordinary soil / water is collected at a 1/1/1 weight ratio, put in a mortar and pulverized and mixed to prepare a soil for contamination, and 20 g of the contaminant is applied to a 10 cm × 10 cm fabric surface with a knife. After coating with a coater and leaving it for 24 hours, the contaminants are struck by hand, washed according to the method prescribed in the JIS L0217-103 method, and the degree of contamination is determined (grade) on the gray scale for contamination. Grade 3 or higher, preferably level 4 or higher. It is hard to say that the anti-contamination property is good below the third grade.

    The fiber material used in the fiber structure of the present invention is not particularly limited, but an aromatic polyester fiber such as polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate, an acid component of an aromatic polyester, or an alcohol component, for example, , Fibers made of copolymers using isophthalic acid, isophthalic acid sulfonate, adipic acid, etc., aromatic polyester fibers blended with polyethylene glycol, etc., aliphatic polyesters represented by L-lactic acid as a main component Fibers, polyamide fibers such as nylon 6 and nylon 66, acrylic fibers based on polyacrylonitrile, polyolefin fibers such as polyethylene and polypropylene, synthetic fibers such as polyvinyl chloride fibers, acetate Semisynthetic fibers such as rayon, cotton, hemp, natural fibers such as silk and wool and the like. In the present invention, these fibers can be used singly or as a mixture of two or more, but fibers mainly composed of polyester fibers and polyamide fibers are preferably used.

  The fibers used in the present invention may be flat yarns such as false twisted yarns, strong twisted yarns, taslan yarns, thick yarns and mixed yarns in addition to normal flat yarns, and staple fibers, tows, or spinning yarns. Various forms of fibers such as yarn may be used.

  The fiber structure of the present invention includes a knitted fabric using the fibers, a fabric-like material such as a woven fabric or a non-woven fabric, or a string-like material.

  Since the fiber structure of the present invention has antistatic properties, water repellency, pollen adhesion prevention, and mud adhesion prevention, it is particularly clothes and bedding called outer, specifically coats, blousons, windbreakers, It is suitably used for non-clothing products such as blouse, dress shirts, skirts, slacks, and other clothing products, gloves, hats, futon linings, futon covers, curtains, and tents.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these. Moreover, the quality evaluation in an Example was implemented with the following method.

(Antistatic)
The friction withstand voltage was measured using cotton as a target cloth in an atmosphere of 20 ° C. × 40% RH by the method defined in the JIS L 1094B method (friction band voltage measurement method), and displayed in (kv).
(Water repellency)
Evaluation was made by the spray method according to the method specified in JIS L 1092 “Test method for waterproofness of textile products” (1998), and the grade was determined.

(Pollen adhesion prevention)
Thirty pieces of 7 × 7 cm fiber fabrics are left in an environment of 20 ° C. × 65% RH for 24 hours, then placed in a polyethylene bag together with 1 g of artificial pollen, and about 20 liters with 20 ° C. × 65% RH air. Inflate and bind mouth. After tying such a polyethylene bag at a speed of 1 sec / sec and shaking it up and down 100 times based on the mouth, take out the fiber fabric and take three photos of the fiber fabric surface magnified 50 times. Count the number of pseudo-pollens within the range of 7.5 × 10 cm and calculate the average of the three locations.

(Mud antifouling property)
Red jade soil / ordinary soil / water is collected at a 1/1/1 weight ratio, placed in a mortar and pulverized and mixed to prepare the mud for contamination. 20 g of the stain is applied to a 10 cm × 10 cm fabric surface with a knife coater and left for 24 hours, and then the stain is struck by hand, washed by the method prescribed in the JIS L0217-103 method, and contaminated. The grade is determined with a gray scale for contamination.

(Washing durability)
A weak alkaline synthetic detergent specified in JIS K337 is dissolved in an automatic inversion swirl electric washing machine to a concentration of 0.2% by weight, and a strong bath is used at a temperature of 40 ± 2 ° C. at a bath ratio of 1:50. Washing was carried out for 10 minutes under the conditions, and then the process of draining and washing with overflowing water for 10 minutes × 2 times was repeated 10 times, and then air-dried.

(Examples 1-11, Comparative Examples 1-4)
After weaving a plain fabric using 84 dtex, 72 filament false twisted yarn made of polyethylene terephthalate as warp and weft yarn, the fabric is scoured in a continuous manner at a temperature of 95 ° C. in a conventional manner and washed with hot water. Then, it was dried at 130 ° C. and pinter set at 180 ° C. Subsequently, using a liquid dyeing machine, a fluorescent white dye was dyed at a temperature of 130 ° C., washed with hot water, dried, and pintter set at 170 ° C. was used for evaluation of mud antifouling properties. On the other hand, it was dyed black at a temperature of 130 ° C. using a liquid dyeing machine, subjected to reduction washing, hot water washing, drying by a conventional method, and pintter set at 170 ° C. for pollen antifouling evaluation. Both white and black fabrics had a fabric density of warp / width of 140/88 / 2.54 cm.

Table 1 shows the results of treating the white and black fabrics by the following method to form a film and evaluating the performance. All of them had durable antistatic property, water repellency, pollen adhesion prevention property, mud antifouling property and soft texture.
Below, the film formation method is shown.
(Polymerizable monomer)
A: Polyethylene glycol dimethacrylate having a polyalkylene oxide segment having a molecular weight of 1000 (solid content: 100%).
(Fluorine-based water and oil repellent)
B: F470 (manufactured by Kyo Silk Chemical Co., Ltd., fluorine-based water and oil repellent, solid content 20%)
C: F200 (manufactured by Kyo Silk Chemical Co., Ltd., fluorine-based water and oil repellent, solid content 20%)
(Inorganic fine particles)
D: Snowtex AK (manufactured by Nissan Chemical Industries, Ltd., silicon oxide, solid content 20%, particle size 10-20 nm)
E: CLA-110 (manufactured by Kyoeisha Chemical Co., Ltd., silicon oxide, solid content 10%, particle size 100 to 200 nm)
(Organic fine particles)
F: Chemipearl S-120 (manufactured by Sumitomo Chemical Co., Ltd., olefin resin, solid content 30%, particle size 20-30 nm)
G: Brighton 339 (manufactured by Kyokin Kasei Co., Ltd., acrylic resin, solid content 20%, particle size 0.7 μm)
Among the above, the treatment liquid is adjusted by mixing at a blending ratio as shown in Table 1, the fabric is dipped in the treatment liquid, squeezed with mangles, and the amount of the treatment liquid deposited is 90% by weight. Then, the treatment was performed in a saturated steam atmosphere at 105 ° C. for 5 minutes.

    Subsequently, it was washed for 1 minute in a 60 ° C. aqueous solution containing 1 g / L of a nonionic surfactant and 1 g / L of sodium carbonate, washed with water, dried at 130 ° C., and pinter set at 170 ° C.

Claims (8)

Polymeric monomer having two or more acrylic groups and / or methacrylic groups as both ends of the main chain mainly composed of a polyalkylene oxide segment or one terminal or side chain of the main chain on the surface of a single fiber A fluorine-based water / oil repellent, the water repellency is at least quaternary, and the coating further contains inorganic fine particles and / or A fiber structure containing organic fine particles. The fiber structure according to claim 1, wherein the frictional voltage after 10 washes is 2 kv or less and the water repellency is 3 or more. The fiber structure according to claim 1 or 2, wherein the fluorine-based water / oil repellent is at least one of organic fluorine-based compounds represented by the following general formula.

The fiber structure according to any one of claims 1 to 3, which is the inorganic fine particle silicon oxide. The fiber structure according to any one of claims 1 to 4, wherein the resin film contains an aminoplast resin and / or an isocyanate compound. The fiber structure according to any one of claims 1 to 5, wherein the fiber structure is a cloth having 250 or less pseudo pollen adhered to the surface of the fiber structure as measured by the following measurement method.
(Measuring method)
Thirty pieces of 7 × 7 cm fiber fabrics are left in an environment of 20 ° C. × 65% RH for 24 hours, placed in a polyethylene bag together with 1 g of artificial pollen, and about 20 liters in air at 20 ° C. × 65% RH. Inflate and bind mouth. The polyethylene bag was tied at a speed of 1 sec / sec and shaken up and down 100 times with respect to the mouth, and then the fiber fabric was taken out, and three photographs of the fiber fabric surface magnified 50 times were taken. Count the number of x10 cm pseudo-pollen and calculate the average of the three locations. The mud antifouling property when measured by the following measurement method is grade 4 or higher. The fiber structure according to any one of claims 1 to 6.
(Measuring method)
Red jade soil / black soil / water is collected at a 1/1/1 weight ratio, placed in a mortar and pulverized and mixed to prepare a mud for contamination. 20 g of the stain is applied to a 10 cm × 10 cm fabric surface with a knife coater and left for 24 hours, and then the stain is struck by hand, washed by the method prescribed in the JIS L0217-103 method, and contaminated. The grade is determined with a gray scale for contamination. The clothing which uses the fiber structure in any one of Claims 1-7.