JP7417475B2 - Windproof fabrics and clothing - Google Patents

Description

The present invention relates to windproof fabrics and garments.

When textile fabrics are used as clothing, windproof properties are created by impregnating the textile fabric with resin or by laminating a resin film made of synthetic resin on the textile fabric, in order to prevent loss of body temperature and improve cold protection. Fabrics are widely used.
For example, Patent Document 1 discloses windproof underwear in which one side of a knitted fabric is coated with a resin.

In addition, from the perspective of wearer comfort, textile fabrics have water-repellent properties to prevent the surface of clothing from getting wet due to rain or other moisture, and moisture-repellent properties to prevent stuffiness inside clothing due to insensible evaporation or perspiration. Moisture permeability is required to prevent this.
For example, to impart water repellency to fiber fabrics, a water repellent may be used.

In recent years, interest in the environment has increased, and there is a growing demand for materials with low environmental impact. In particular, in water repellents, fluorine-based water repellents that have a perfluoroalkyl group with 8 carbon atoms (C8 fluorine-based water repellents) contain perfluorooctanoic acid, which is feared to have a negative impact on the environment. It is said that Therefore, there is a need to switch to fluorine-based water repellents that have a perfluoroalkyl group with a carbon number of 6 (C6 fluorine-based water repellents) or water repellents that do not contain fluorine (non-fluorine-based water repellents). ing.
For example, Patent Document 2 discloses that a woven or knitted material has a moisture-permeable waterproof layer (hydrophilic resin film) formed of polyurethane or the like on one surface, and a permeable material having a carbon number of 1 to 6 on the other surface of the woven or knitted material. A laminated fabric having water repellency and moisture permeability and waterproof properties is disclosed, to which a water repellent having a fluoroalkyl group or a non-fluorine water repellent is attached.

Japanese Patent Application Publication No. 2013-234401 JP2017-217913A

However, compared to C8 fluorine water repellents and the like, C6 fluorine water repellents and non-fluorine water repellents tend to have lower water repellency. In particular, windproof fabrics such as the laminated fabric described in Patent Document 2, in which a hydrophilic resin film (hydrophilic film) is laminated on one side of the fiber fabric and a water repellent agent is attached to the other side, However, there is a problem in that water that comes into contact with the other side of the fibrous fabric is absorbed by the action of the hydrophilic film laminated on one side of the fibrous fabric, resulting in a decrease in water repellency.
In the laminated fabric described in Patent Document 2, water repellency is improved by specifying the surface shape and cover factor of the woven or knitted fabric, but this is limited to special woven or knitted fabrics rather than ordinary and inexpensive fiber fabrics. . Therefore, it is difficult to apply it to fiber fabrics that are stretchable and frequently open, or to fabrics with thin threads or low density to reduce weight or soften the texture.

An object of the present invention is to provide windproof fabrics and clothing that have excellent windproof properties, moisture permeability, and water repellency while having a low environmental impact.

The present invention has the following aspects.
[1] Comprising a fibrous fabric and a nonporous hydrophilic membrane laminated on one side of the fibrous fabric, and having no perfluoroalkyl group having 7 or more carbon atoms on the fiber surface of the fibrous fabric. Windproof fabric coated with water repellent and Group 4 element compound.
[2] The windproof fabric according to [1] above, wherein 0.1 g or more of the Group 4 element compound is attached per 1 m ² of the windproof fabric.
[3] The windproof fabric according to [1] or [2] above, which has an air permeability of 5 cm ³ /cm ² ·s or less as measured according to JIS L 1096:2010 A method (Fragile method).
[4] Moisture permeability measured according to JIS L 1099:2012 A-1 method (calcium chloride method) is 4000 g/m ^2.24 hrs or more, and JIS L 1099:2012 B-1 method (potassium acetate method) ) The windproof fabric according to any one of [1] to [3] above, which has a moisture permeability of 20,000 g/m ² ·24 hrs or more as measured according to the above-mentioned method.
[5] The other side of the fibrous fabric is exposed, and the water repellency of the other side of the fibrous fabric is measured according to the water repellency test (spray test) described in JIS L 1092:2009. The windproof fabric according to any one of [1] to [4] above, which is grade 4 or higher.
[6] Any of the above [1] to [5], wherein the elongation at break measured according to JIS L 1096:2010 JIS method A method (strip method) in at least one of the warp direction and the weft direction is 30% or more. A windproof fabric.
[7] The windproof fabric according to any one of [1] to [6], wherein the fiber fabric is a woven fabric and has a cover factor of 900 or more and less than 1,800.
[8] The windproof fabric according to any one of [1] to [6] above, wherein the fiber fabric is a knitted fabric, and the product of fiber thickness (dtex) and gauge number per 2.54 cm is 650 or more and less than 1,800. .
[9] Clothes using the windproof fabric according to any one of [1] to [8] above.

According to the present invention, it is possible to provide windproof fabrics and clothing that have low environmental impact and have excellent windproof properties, moisture permeability, and water repellency.

The present invention will be explained in detail below. The following embodiments are merely examples for explaining the present invention, and are not intended to limit the present invention only to these embodiments. The present invention can be implemented in various ways without departing from the spirit thereof.

[Windproof fabric]
The windproof fabric of the present invention has a fibrous fabric and a non-porous hydrophilic membrane laminated on one side of the fibrous fabric.
In this specification, the surface of the fibrous fabric on which the hydrophilic film is formed (one surface of the fibrous fabric) is also referred to as the "first surface", and the surface located on the opposite side of the first surface of the fibrous fabric The surface (the other surface of the fiber fabric) is also referred to as the "second surface." That is, the fibrous fabric has a first side and a second side.

<Fiber fabric>
The material of the fibers constituting the fiber fabric is not particularly limited, but examples thereof include polyester, nylon, acrylic, polyurethane, and rayon such as acetate, cupro, and viscose. In addition to the above-mentioned fiber materials, for example, chemical fibers such as polylactic acid, aromatic polyamide, polyimide, and polyphenylene sulfide, natural fibers such as cotton, linen, silk, or wool, or mixtures of these materials may also be used. Textile, blended, interwoven or interwoven products can be used.

The fibers constituting the fibrous fabric may be either long fibers or short fibers. Moreover, the yarn using this fiber may be any of raw silk, twisted yarn, and processed yarn. The textured yarn is not particularly limited, and includes, for example, false twisted yarn (for example, woolly textured yarn, DTY, improved false twisted textured yarn, etc.), pressed textured yarn, shaped textured yarn, rubbed textured yarn, Taslan textured yarn, and yarn length difference. A drawn yarn, a composite yarn, a fluffed yarn, an interlaced bundled yarn, an interlaced mixed fiber yarn, etc. can be used.

The cross-sectional shape of the fibers constituting the fiber fabric is not particularly limited, and examples thereof include round, triangular, star-shaped, flat, C-shaped, hollow, square, and dog-bone shapes.

A water repellent having no perfluoroalkyl group having 7 or more carbon atoms and a Group 4 element compound are attached to the fiber surface of the fiber fabric.
In addition, in the present invention, threads in which a water repellent agent or a Group 4 element compound is kneaded are not considered to be attached to the fiber surface.

The main water repellency of windproof fabrics is provided by a water repellent that does not contain a perfluoroalkyl group having 7 or more carbon atoms.
A water repellent that does not have a perfluoroalkyl group having 7 or more carbon atoms is a material with low environmental impact. Examples of such water repellents include fluorine-based water repellents made of fluorine compounds having a perfluoroalkyl group having 1 to 6 carbon atoms, and water repellents that do not contain fluorine (non-fluorine water repellents). It will be done.
Examples of the fluorine-based water repellent include C6 fluorine-based water repellents such as perfluorohexanoic acid and polymers having units derived from these in their side chains.
Examples of the non-fluorine water repellent include hydrocarbon compounds (for example, aliphatic hydrocarbons, aliphatic carboxylic acids, poly(meth)acrylic esters, etc.), silicone compounds, and the like.
The water repellent having no perfluoroalkyl group having 7 or more carbon atoms may be used alone or in combination of two or more.

The water repellent having no perfluoroalkyl group having 7 or more carbon atoms is preferably attached to the fiber surface in an amount of 0.01 to 10 g ^{per square} meter of windproof fabric, more preferably in an amount of 0.05 to 5 g. The amount is more preferably 0.1 to 3 g, particularly preferably 0.5 to 1.5 g. If the amount of adhesion per 1 m ² of windproof fabric is at least the above lower limit, water repellency can be sufficiently exhibited. If the amount of adhesion per m ² of windproof fabric is below the above upper limit, sufficient tear strength and seam strength will be easily obtained. In addition, the occurrence of chalk marks can be suppressed.

Although the properties of Group 4 element compounds have not been completely elucidated, Group 4 element compounds have a high affinity with hydrophilic functional groups in the unreacted state of the compound, but when subjected to heat treatment etc. It is thought that this creates a coordination bond between the group 4 element as the central metal and the hydrophilic functional group as the ligand, forming a water-insoluble crosslinked structure via the ligand and suppressing water absorption. It will be done. The Group 4 element compound having such properties acts auxiliary to the water repellent, so that it can be used in textile fabrics whose first surface is laminated with the hydrophilic film described below, especially those with elasticity and frequent use. Excellent water repellency can be achieved even with fiber fabrics that have openings, thin threads, or low density fiber fabrics.
Incidentally, fiber fabrics are known in which Group 4 element compounds are kneaded into the threads for the purpose of matting the fiber fabrics, but the above-mentioned crosslinked structure is difficult to form with the Group 4 element compounds present in the threads. . In order to form a crosslinked structure, the Group 4 element compound must be attached to the surface of the fiber.

Group 4 element compounds include those that form a crosslinked structure via a ligand, and specifically, salts such as zirconium acetate, double salts such as zirconium ammonium carbonate, and zirconium (IV) chloride. Examples include halides, oxides such as titanium (IV) oxide, carbonyl complexes with titanium or zirconium as the central metal, amide complexes, metallocene complexes, and organometallic compounds with alkoxides, acetylacetonate, triethanolaminate, etc. .
Note that some Group 4 element compounds have photocatalytic activity as semiconductors, but the photocatalytic action may cause hydrophilization or destabilization of the crosslinked structure. Therefore, when a Group 4 element compound has photocatalytic activity, it is preferable to reduce the photocatalytic activity to a virtually negligible level by changing the crystal structure or coating the surface.
One type of Group 4 element compound may be used alone, or two or more types may be used in combination.

The Group 4 element compound is preferably attached to the fiber surface in an amount of 0.1 g or more per ^square meter of windproof fabric, more preferably 0.5 g or more, and even more preferably 1 g or more. If the amount of adhesion per 1 m ² of windproof fabric is equal to or greater than the above lower limit, the auxiliary action to the water repellent agent will be more likely to be exerted, and the windproof fabric will be more likely to have excellent water repellency.
There is no particular limit to the upper limit of the amount of Group 4 element compounds attached, but if more than 20 g of Group 4 element compounds are attached per 1 m ² of windproof fabric, the texture may become hard. Therefore, the amount of the Group 4 element compound deposited is preferably 20 g or less, more preferably 15 g or less per 1 m ² of windproof fabric.

The fiber fabric may be in any form such as a woven fabric, a knitted fabric, or a nonwoven fabric, but a woven fabric or a knitted fabric is particularly preferable. Alternatively, a fiber fabric may be used that is made of stretchable elastic yarn or knitted to give it stretchability and improve the feeling of wearing.

When the fiber fabric is a woven fabric, there are no particular limitations on the cover factor. From the viewpoint of weight reduction and soft texture, the lower the cover factor is, the more preferable it is. Specifically, the cover factor is preferably 900 or more and less than 1,800, and more preferably 1,100 or more and less than 1,600. If the cover factor is within the above range, the windproof fabric can be made lighter and have a softer feel while maintaining its strength when used as clothing.
Note that the cover factor is calculated by the following formula (i) and is a numerical representation of the density of the fabric.
CF=T×(DT) ^1/2 +W×(DW) ^1/2 ...(i)
(In formula (i), "CF" is the cover factor, "T" is the density of the warp yarns constituting the fabric (strands/2.54 cm), and "W" is the density of the weft yarns (strands/2.54 cm) constituting the fabric fabric. /2.54cm), "DT" is the fiber thickness (dtex) of the warp yarns that make up the fabric, and "DW" is the fiber thickness (dtex) of the weft yarns that make up the fabric.)

When the fiber fabric is a knitted fabric, there are no particular limitations on the thickness or gauge of the fibers that make up the knitted fabric. From the viewpoint of reducing weight and softening the texture, it is preferable that the fiber thickness and gauge are small. Specifically, the product of the fiber thickness (dtex) and the number of gauges per 2.54 cm is preferably 650 or more and less than 1800, and 850 More preferably, it is less than 1,600. If the product of the fiber thickness (dtex) and the gauge number per 2.54 cm is within the above range, it is possible to maintain the strength of the windproof fabric when it is used as clothing, while reducing weight and softening the texture. .

The fiber fabric may be colored in advance or may not be colored. When coloring textile fabrics in advance, dyes such as disperse dyes, cationic dyes, acid dyes, direct dyes, reactive dyes, vat dyes, and sulfur dyes, optical brighteners, or pigments are used to color the textile fabrics. can do.
In addition, various treatments that are normally performed when coloring fibers may be performed, such as a fix treatment using synthetic tannins that is performed when dyeing nylon using an acid dye.
The method for coloring the fibers is not particularly limited, and examples include methods such as dope dyeing, dip dyeing, and printing.
Note that the materials used for coloring the fiber fabric are not limited to those mentioned above, and may be selected from materials appropriate for the material of each fiber fabric.

The fiber fabric may be subjected to calendar processing, flame retardant processing, antistatic processing, antibacterial and deodorizing processing, antibacterial processing, ultraviolet ray shielding processing, light resistance improvement processing, plasma treatment, etc. within the range that does not impede the purpose of the present invention. Good too.

<Hydrophilic membrane>
The hydrophilic membrane is a resin membrane laminated on the first surface of the fibrous fabric and is non-porous.
By laminating the hydrophilic film on the first surface of the fibrous fabric, excellent windproof properties and moisture permeability can be imparted to the fibrous fabric.
In the present invention, "non-porous" refers to unintended defects such as pores in the thickness direction of the membrane due to foreign objects or pinholes, pores in the surface direction of the membrane due to cracks caused by physical deformation, etc. This means that there are essentially no pores in the membrane, except for discontinuous parts of the membrane caused by unevenness of the fibers constituting the fiber fabric.

The material for the hydrophilic film is not particularly limited as long as it has hydrophilic properties, but examples include polyvinyl alcohol, poly(meth)acrylic acid, poly(meth)acrylic acid ester, poly(meth)acrylamide and its derivatives, polyalkylene Examples include resins such as polyurethane that have oxide chains in their main chains and side chains. Among these, the hydrophilic film is resistant to peeling and damage due to friction between the hydrophilic film and the body, etc. when worn, and the windproof fabric is made of stretchable material to give stretchability to the entire windproof fabric. Polyurethane is preferred because it is easy to use.

The hydrophilic film may contain additives such as colorants such as pigments, moisture permeability improvers such as polyalkylene glycol, isocyanate crosslinking agents, catalysts, antioxidants, and ultraviolet absorbers.

The mass per unit area (fabric weight) of the hydrophilic membrane is preferably 5 to 45 g/m ² , more preferably 10 to 35 g/m ² , even more preferably 10 to 30 g/m ² . If the basis weight of the hydrophilic film is equal to or greater than the above lower limit, windproof properties can be sufficiently exhibited. When the basis weight of the hydrophilic film is below the above upper limit, it becomes easy to obtain a windproof fabric that is lightweight and has a soft texture while fully exhibiting moisture permeability. In particular, when the fiber fabric is a woven fabric, it also has the advantage that sufficient tear strength and seam strength can be easily obtained.

<Physical properties of windproof fabric>
(Air permeability)
Generally, in order to reduce weight and soften the texture, it is sufficient to reduce the basis weight of the resin film laminated to the textile fabric and reduce the thickness of the resin film, but in this case, the air permeability may be unintentionally reduced. tends to be higher.
However, according to the windproof fabric of the embodiment described above, since the non-porous hydrophilic membrane is laminated on the first surface of the fibrous fabric, the basis weight of the hydrophilic membrane laminated on the fibrous fabric is small; Even if the film thickness is thin, windproofing properties can be significantly improved. For example, the windproof fabric of the present invention tends to have an air permeability of 5 cm ³ /cm ² ·s or less when measured according to JIS L 1096:2010 A method (Frazier method). The air permeability is more preferably 3 cm ³ /cm ² ·s or less. From the viewpoint of windproofing, it is preferable that the air permeability is low, but if the air permeability is lowered more than necessary, the basis weight of the hydrophilic film will increase, and there is a risk that the lightweight property will be impaired or the texture will be hardened. Therefore, the air permeability is preferably 0.05 cm ³ /cm ² ·s or more.

(moisture permeability)
According to the windproof fabric of the embodiment described above, since the hydrophilic membrane is laminated on the first surface of the fibrous fabric, the moisture permeability can be significantly improved even if the hydrophilic membrane is non-porous. can. For example, with the windproof fabric of the present invention, the moisture permeability measured according to JIS L 1099:2012 A-1 method (calcium chloride method) tends to be 4000 g/m ² · 24 hrs or more, and it also meets JIS L 1099. :2012 The moisture permeability measured according to the B-1 method (potassium acetate method) tends to be 20,000 g/m ² 24 hrs or more. More preferably, the moisture permeability measured according to method A-1 is 5000 g/m ² ·24 hrs or more, and the moisture permeability measured according to method B-1 is 30000 g/m ² ·24 hrs or more. On the other hand, if the moisture permeability is too high, sweat may evaporate too quickly and the body may become cold. Therefore, the moisture permeability measured according to method A-1 is preferably 20,000 g/m ² ·24 hrs or less, and the moisture permeability measured according to method B-1 is preferably 100,000 g/m ² ·24 hrs or less.

(Water repellency)
According to the windproof fabric of the embodiment described above, since a specific water repellent agent and a Group 4 element compound are attached to the fiber surface of the fibrous fabric, water repellency can be significantly improved. In particular, if the second surface of the fiber fabric is exposed, water repellency can be improved more significantly. For example, in the case of the windproof fabric of the present invention, the water repellency of the second side of the exposed fiber fabric is grade 4 when measured according to the water repellency test (spray test) described in JIS L 1092:2009. It tends to be more than that. Water repellency is more preferably grade 5.

(Elongation at break)
According to the windproof fabric of the embodiment described above, stretchability can be significantly improved. For example, in the case of the windproof fabric of the present invention, the elongation at break measured in accordance with JIS L 1096:2010 JIS method A method (strip method) in at least one of the warp direction and the weft direction is likely to be 30% or more. More preferably, the elongation at break in the warp and weft directions is 30% or more, and even more preferably, the elongation at break in the warp and weft directions is 50% or more.

<Method for manufacturing windproof fabric>
Next, an example of the method for manufacturing the windproof fabric of the present invention will be described. Note that the present invention is not limited to those obtained by the manufacturing method described below.

First, a fiber fabric serving as a base material is prepared. The above-mentioned fiber fabrics are used, and are subjected to processing such as hot water washing, scouring, relaxing, and heat setting, as necessary. The processing may be performed by a known method. Moreover, in order to impart other performance, the above-mentioned processing may be performed under special conditions within a range that does not impair the effects of the present invention.
Furthermore, as necessary, textile fabrics are subjected to treatments such as dyeing, printing, calendaring, flame retardant, antistatic, antibacterial and deodorizing, antibacterial, ultraviolet shielding, light resistance improvement, and plasma treatment. It may be applied.

Next, the fiber fabric is treated with a Group 4 element compound and water-repellent.
In the treatment with a group 4 element compound, a treatment liquid (1) in which the group 4 element compound is dissolved in a solvent or dispersed in a dispersion medium is applied to the fiber fabric by a padding method or a spray method, and then heated at 40 to 180°C. The film is dried at a temperature of 10 to 600 seconds, and if necessary, heat treated at 130 to 200°C for 5 to 300 seconds.
On the other hand, in water-repellent finishing, a treatment liquid (2) in which a water-repellent agent that does not have a perfluoroalkyl group with a carbon number of 7 or more is dissolved or dispersed in a solvent or dispersion medium is applied to fiber fabrics using a padding method, a spray method, etc. After application, it is dried at 40 to 140°C for about 10 to 600 seconds, and if necessary, heat treated at 130 to 200°C for about 5 to 300 seconds.
Note that the treatment with the Group 4 element compound and the water repellent treatment may be performed simultaneously or separately. When performing these treatments separately, it is preferable to perform the treatment with the Group 4 element compound before the water repellent finishing in order to prevent the water repellent agent from inhibiting the penetration of the treatment liquid (1) into the fiber fabric.

The concentration of the Group 4 element compound in the treatment liquid (1) is preferably adjusted to be 0.1 g or more per 1 m ² of the windproof fabric, depending on the amount picked up by the fiber fabric.
Examples of the solvent or dispersion medium used in the treatment liquid (1) include water; alcohol solvents such as isopropyl alcohol and n-butyl alcohol; ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone; and esters such as ethyl acetate and butyl acetate. Examples include cellosolve-based solvents such as ethyl cellosolve and propyl cellosolve; other aprotic polar solvents such as N,N-dimethylformamide and tetrahydrofuran.

The concentration of the water repellent in the treatment liquid (2) may be appropriately set depending on the type of water repellent used, the desired water repellency, the texture of the resulting windproof fabric, and the like. For example, the content of the water repellent agent is preferably 0.1 to 10% by mass in terms of solid content with respect to the total mass of the treatment liquid (2).
Examples of the solvent or dispersion medium used in the treatment liquid (2) include water; alcohol solvents such as isopropyl alcohol and n-butyl alcohol; ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone; and esters such as ethyl acetate and butyl acetate. Solvents; cellosolve solvents such as ethyl cellosolve and propyl cellosolve; other aprotic polar solvents such as N,N-dimethylformamide and tetrahydrofuran; aromatic hydrocarbon solvents such as toluene and xylene; petroleum ether, mineral turpentine, etc. Examples include aliphatic hydrocarbon solvents.

In addition, treatment liquid (1) and treatment liquid (2) each contain hydrophobic silica to improve water repellency, isocyanate crosslinking agent to improve durability against washing, etc., and fibers. Additives such as penetrants may also be included.

Next, a non-porous hydrophilic membrane is laminated on the first surface of the fiber fabric that has been treated with a Group 4 element compound and subjected to water repellent finishing (lamination process). Examples of means for laminating hydrophilic films include coating methods and laminating methods.
In the coating method, a hydrophilic film material (resin) whose viscosity has been adjusted is directly coated on the first surface of the fiber fabric using a knife coater, blade coater, gravure coater, reverse coater, extrusion coater, or the like. Examples of methods for adjusting the viscosity of the material for the hydrophilic film include adding a solvent or dispersion medium to the material, and heating the material.
In the lamination method, a hydrophilic film material (resin) is cast onto release paper or the like, and laminated onto the first surface of the fiber fabric using an adhesive if necessary.
Film-forming treatments such as removing the solvent and dispersion medium by heating, promoting the polymerization reaction by irradiating with active energy rays, and solidifying the resin by cooling may be performed as appropriate depending on the method used.

Note that the lamination processing may be performed before or after the treatment with the Group 4 element compound and the water repellent treatment, but it is preferable to laminate a hydrophilic film on the first surface of the fiber fabric by a coating method. In this case, it is preferable to carry out the treatment after treatment with a Group 4 element compound and water repellent treatment, from the viewpoint of making it difficult for the fiber fabric to be impregnated with the resin.

In this way, a non-porous hydrophilic material is formed on the first surface of the fiber fabric, which is made of fibers to which a water repellent agent and a group 4 element compound having a carbon number of 7 or more and do not have a perfluoroalkyl group are attached to the surface. The membranes are laminated to yield a windproof fabric with the second side of the fibrous fabric exposed.

<Effect>
The windproof fabric of the present invention described above has excellent windproof properties and moisture permeability because a nonporous hydrophilic membrane is laminated on the first surface of the fibrous fabric. In addition, since the fiber surface of the fiber fabric is attached with a water repellent and a Group 4 element compound that does not have a perfluoroalkyl group having 7 or more carbon atoms, it has a low environmental impact and has a hydrophilic film. However, it can exhibit excellent water repellency.
In addition, the windproof fabric of the present invention suppresses the deterioration of water repellency by using a water repellent that does not have a perfluoroalkyl group having 7 or more carbon atoms in combination with a Group 4 element compound, so it is not common. In addition to inexpensive fiber fabrics, it is possible to use stretchable fabrics that frequently open up, as well as thin threads and low-density fiber fabrics to reduce weight and soften the texture. .

[clothes]
The clothing of the present invention uses the windproof fabric of the present invention described above, and has excellent windproof properties, moisture permeability, and water repellency while having a low environmental load.
The windproof fabric of the present invention may be used as the outer material or the lining of clothing, but it is preferably used as at least a part of the outer material. Further, when the windproof fabric of the present invention is used as the outer material, the windproof fabric of the present invention may be further used as a lining, or a fabric other than the windproof fabric of the present invention may be used as a lining. Furthermore, a filling layer such as feathers or cotton may be provided between the outer material and the lining material.
Examples of clothing include, but are not particularly limited to, general clothing such as jackets, shirts, dresses, sweaters, and cardigans, sports clothing such as uniforms, windbreakers, tights, and warm-up suits, and work clothes.

EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples, but the following Examples are not intended to limit the scope of the present invention. In addition, "part" described below is a mass part, and "%" is mass %. In addition, various physical properties were measured using the following methods.

[Measuring method]
<Measurement of air permeability>
The air permeability of the windproof fabric was measured according to JIS L 1096:2010 A method (Frazier method).

<Measurement of moisture permeability>
The moisture permeability of the windproof fabric was measured according to JIS L 1099:2012 A-1 method (calcium chloride method) and JIS L 1099:2012 B-1 method (potassium acetate method).
The water-contact surface was the resin membrane side surface of the windproof fabric, and all moisture permeability was converted to the amount of moisture permeation per 24 hours.

<Measurement of water repellency>
A test was conducted according to the water repellency test (spray test) described in JIS L 1092:2009 to measure the water repellency of the windproof fabric.
The water repellency test was conducted before and after laminating the resin film (hydrophilic film or hydrophobic film) on the fiber fabric. Regarding the windproof fabric after laminating the resin film, a water repellency test was conducted on the exposed second surface of the fiber fabric.

<Measurement of breaking elongation>
A test was conducted in accordance with JIS L 1096:2010 JIS method A method (strip method) for each of the warp and weft directions of the windproof fabric, and the elongation rate at cutting was taken as the elongation at break.

[Preparation of resin composition]
<Preparation of resin composition A>
100 parts of hydrophilic polyurethane (manufactured by DIC Corporation, trade name "Crisbon S-525"), 2 parts of an isocyanate crosslinking agent (manufactured by Tosoh Corporation, trade name "Coronate L"), and 50 parts of methyl ethyl ketone were mixed. , a resin composition A was prepared.

<Preparation of resin composition B>
100 parts of hydrophilic polyurethane (manufactured by Daiichi Kogyo Seiyaku Co., Ltd., trade name "Superflex 460") and a polyoxyalkylene glycol-based moisture permeability agent (manufactured by Sanyo Chemical Industries, Ltd., trade name "Nupole 80-4000") ), 1 part of isocyanate crosslinking agent (manufactured by Asahi Kasei Corporation, trade name "Duranate WB40-100"), and 1.5 parts of thickener (manufactured by Nicca Chemical Co., Ltd., trade name "Neosticker N") A resin composition B was prepared by mixing the following parts.

<Preparation of resin composition C>
50 parts of hydrophobic silicone resin (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., trade name: "Elastosil LR3003/50 Material A") and hydrophobic silicone resin (manufactured by Asahi Kasei Wacker Silicone Co., Ltd., trade name: "Elastosil LR3003/50 Material B") 50 parts of the resin were mixed to prepare a resin composition C.

[Example 1]
The textile fabric is a plain weave polyester fabric (fiber thickness: warp 83 dtex, weft 83 dtex, fiber density: warp 105/2.54 cm, weft 88/2.54 cm), which is dyed beige with a disperse dye. Using.
As the treatment liquid (1), a 5% aqueous dispersion of titanium (IV) oxide (manufactured by Dalian Bonded Zone Airi Chemical Co., Ltd., product name "TITANPESTE #72", solid content 35%) was applied to the fabric by a padding method, It was dried at 170° C. for 2 minutes and treated with a Group 4 element compound. The amount of titanium (IV) oxide attached to the fiber surface was 1.2% based on the amount picked up.
Next, as a treatment liquid (2), a 3% aqueous dispersion of a C6 fluorine-based water repellent (manufactured by AGC Co., Ltd., product name "Asahi Guard AG-E081", solid content 30%) and titanium oxide (IV) were added. It was applied to the adhered fabric, dried at 120°C for 30 seconds, and then heat-treated at 150°C for 30 seconds (water repellent finish) to obtain a water repellent fabric. The water repellency at this stage (before lamination of the resin film) is shown in Table 1. The C6 fluorine-based water repellent used in Example 1 is a polymer having a unit derived from perfluorohexanoic acid in its side chain.
Next, using a knife coater, resin composition A is applied to the first surface of the water-repellent fabric using a coating method, and then heat-treated at 150° C. for 90 seconds (lamination processing) to coat the first surface of the fabric. A windproof fabric was obtained in which a non-porous hydrophilic membrane was laminated as a resin membrane and the second surface of the fabric was exposed. The basis weight of the resin film was 13 g/m ² .
The windproof fabric obtained was measured for air permeability, moisture permeability, water repellency, and elongation at break. These results are shown in Table 1. In addition, Table 1 shows the cover factor of the fabric and the amount of Group 4 element compound and water repellent attached to the fiber surface per 1 m ² of windproof fabric.

[Example 2]
A windproof fabric was obtained in the same manner as in Example 1, except that resin composition B was used instead of resin composition A.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, Table 1 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Example 3]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. A windproof fabric was obtained in the same manner as in Example 1, except that a fabric dyed beige with a disperse dye was used and resin composition B was used instead of resin composition A.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, Table 1 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Example 4]
As the fiber fabric, a smooth knitted fabric of polyester fiber (fiber thickness: 22 dtex, 40 gauge/2.54 cm) dyed beige with a disperse dye was used, and resin composition B was used instead of resin composition A. A windproof fabric was obtained in the same manner as in Example 1 except for this.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, the product of the fiber thickness (dtex) of knitted fabric and the gauge number per 2.54 cm, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the amount of resin film Table 1 shows the basis weight.

[Example 5]
As the fiber fabric, a smooth knitted fabric of polyester fiber (fiber thickness: 33 dtex, 40 gauge/2.54 cm) dyed beige with a disperse dye was used, and resin composition B was used instead of resin composition A. A windproof fabric was obtained in the same manner as in Example 1 except for this.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, the product of the fiber thickness (dtex) of knitted fabric and the gauge number per 2.54 cm, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the amount of resin film Table 1 shows the basis weight.

[Example 6]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. A fabric dyed beige with a disperse dye was used, and a 20% aqueous dispersion of ammonium zirconium carbonate (manufactured by Nippon Light Metal Co., Ltd., product name "Baycoat 20", solid content 20%) was used as the treatment liquid (1). A windproof fabric was obtained in the same manner as in Example 1, except that resin composition B was used instead of composition A.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, Table 1 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Example 7]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. Using a fabric dyed beige with a disperse dye, titanium diisopropoxy bis(triethanolaminate) (manufactured by Matsumoto Fine Chemicals Co., Ltd., product name "ORGATIX TC-400", solid content 79) was used as the treatment liquid (1). A windproof fabric was obtained in the same manner as in Example 1, except that a 25% aqueous dispersion of %) was used and resin composition B was used instead of resin composition A.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 1. In addition, Table 1 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Comparative example 1]
The fiber fabric is a plain weave polyester fabric with 3.5% titanium (IV) oxide kneaded into the yarn (fiber thickness: warp 83 dtex, weft 83 dtex, fiber density: warp 105/2.54 cm, weft 88 pieces/2.54 cm) was dyed beige with a disperse dye, resin composition B was used instead of resin composition A, and no treatment with a group 4 element compound was carried out. A windproof fabric was obtained in the same manner as in Example 1.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 2. In addition, Table 2 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Comparative example 2]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. Windproof properties were obtained in the same manner as in Example 1, except that a fabric dyed beige with a disperse dye was used, resin composition B was used instead of resin composition A, and the treatment with the Group 4 element compound was not performed. Got the dough.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 2. Further, Table 2 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Comparative example 3]
As the fiber fabric, a smooth knitted fabric of polyester fiber (fiber thickness: 33 dtex, 40 gauge/2.54 cm) was dyed beige with a disperse dye, and resin composition B was used instead of resin composition A. A windproof fabric was obtained in the same manner as in Example 1, except that the treatment with the Group 4 element compound was not performed.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 2. In addition, the product of the fiber thickness (dtex) of knitted fabric and the gauge number per 2.54 cm, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the amount of resin film Table 2 shows the basis weight.

[Comparative example 4]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. A windproof fabric was obtained in the same manner as in Example 1, except that a fabric dyed beige with a disperse dye was used, resin composition B was used instead of resin composition A, and water repellent treatment was not performed. .
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 2. Further, Table 2 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Comparative example 5]
As the fiber fabric, a plain weave fabric of nylon/polyurethane = 80/20 (mass ratio) fiber (fiber thickness: warp 33 dtex, weft 33 dtex, fiber density: warp 157/2.54 cm, weft 114/2.54 cm) was used. Example 1 except that a fabric dyed beige with a disperse dye was used, and a nonporous hydrophobic membrane was laminated on the first side of the fabric using resin composition C instead of resin composition A. A windproof fabric was obtained in the same manner.
The water repellency before lamination of the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the obtained windproof fabric were measured. These results are shown in Table 2. Further, Table 2 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film.

[Comparative example 6]
The windproof fabric obtained in Comparative Example 5 was further needle punched at a punch density of 60 times/cm ² to convert the nonporous hydrophobic membrane into a porous hydrophobic membrane.
The water repellency before laminating the resin film, and the air permeability, moisture permeability, water repellency, and elongation at break of the windproof fabric after needle punching were measured. These results are shown in Table 2. Further, Table 2 shows the cover factor of the fabric, the amount of Group 4 element compound and water repellent adhered to the fiber surface per 1 m ² of windproof fabric, and the basis weight of the resin film. The moisture permeability according to JIS L 1099:2012 B-1 method (potassium acetate method) could not be measured due to water leakage.

As is clear from Table 1, the windproof fabrics obtained in each example had excellent windproof properties, moisture permeability, and water repellency while having a low environmental load. Furthermore, the windproof fabrics obtained in each example had a breaking elongation of 30% or more in at least one of the warp direction and the weft direction, and had excellent elasticity.
On the other hand, as is clear from Table 2, the windproof fabrics of Comparative Examples 1 to 3, which were not treated with the Group 4 element compound, did not have the resin film attached because the Group 4 element compound was not attached to the fiber surface. The water repellency before lamination was good, but when the resin film was laminated, the water repellency decreased.
The windproof fabric of Comparative Example 4, which was not subjected to water repellent finishing, had poor water repellency.
The windproof fabric of Comparative Example 5, in which a nonporous hydrophobic membrane was laminated on the first surface of the fibrous fabric, had poor moisture permeability.
The windproof fabric of Comparative Example 6, in which the windproof fabric of Comparative Example 5 was needle-punched, was made in accordance with JIS L 1099:2012 A-1 method (calcium chloride method) because the hydrophobic membrane became porous. Moisture permeability was improved, but windproofness decreased.

The windproof fabric of the present invention has low environmental impact and has excellent windproofness, moisture permeability, and water repellency, and is particularly suitable for general clothing such as jackets, shirts, dresses, sweaters, and cardigans, uniforms, windbreakers, and tights. , sports clothing such as warm-up suits, work clothes, etc.

Claims (9)

comprising a fibrous fabric and a non-porous hydrophilic membrane laminated on one side of the fibrous fabric,
A windproof fabric, wherein a water repellent having no perfluoroalkyl group having 7 or more carbon atoms and a Group 4 element compound are attached to the fiber surface of the fibrous fabric. The windproof fabric according to claim 1, wherein the Group 4 element compound is attached in an amount of 0.1 g or more per 1 m ² of the windproof fabric. The windproof fabric according to claim 1 or 2, having an air permeability of 5 cm ³ /cm ² ·s or less as measured according to JIS L 1096:2010 A method (Fragile method). The moisture permeability measured according to JIS L 1099:2012 A-1 method (calcium chloride method) is 4000 g/m ² · 24 hrs or more, and according to JIS L 1099:2012 B-1 method (potassium acetate method). The windproof fabric according to any one of claims 1 to 3, which has a water vapor permeability of 20,000 g/m ² ·24 hrs or more as measured by the windproof fabric. The other side of the fibrous fabric is exposed, and the water repellency of the other side of the fibrous fabric measured according to the water repellency test (spray test) described in JIS L 1092:2009 is grade 4 or higher. The windproof fabric according to any one of claims 1 to 4. According to any one of claims 1 to 5, the elongation at break measured in accordance with JIS L 1096:2010 JIS method A method (strip method) in at least one of the warp direction and the weft direction is 30% or more. Windproof fabric. The windproof fabric according to any one of claims 1 to 6, wherein the fibrous fabric is a woven fabric and has a cover factor of 900 or more and less than 1,800. The windproof fabric according to any one of claims 1 to 6, wherein the fiber fabric is a knitted fabric, and the product of fiber thickness (dtex) and gauge number per 2.54 cm is 650 or more and less than 1,800. Clothes using the windproof fabric according to any one of claims 1 to 8.