JPH08246339A - Heat-insulating, moisture-permeating, and water-proofing web - Google Patents

Abstract

PURPOSE: To obtain a lightweight and non-bulky web excellent in moisture-permeating and waterproofing properties, and having a sufficient heat-insulating property by covering a web with a porous resin layer consisting mainly of a polyurethane resin and containing a specific inorganic fine powdery material and specific fine particles. CONSTITUTION: The characteristic of this web comprises containing (A) an inorganic fine powdery material having an average particle diameter of <=1μm and having an N,N-dimethylformaldehyde-adsorbing volume of >=200ml/100g in an amount of <=1wt.% and (B) fine particles having an average particle diameter of <=1μm and having a light-absorbing and heat-converting ability in an amount of >=1wt.% in a porous resin layer consisting mainly of a polyurethane resin, wherein the total amount of both the components A and B is 2-40wt.%. The component B comprises at least one kind of (a) the carbide of the IV group transition metal in the periodic table, (b) stannic oxide doped with antimony oxide, and (c) an inorganic substance coated with the stannic oxide doped with the antimony oxide. Thus, the web having a moisture permeability of >=7,000g/m<2> .24hrs and a water-resisting pressure of >=0.6kgf/cm<2> , and good in the abrasion resistance and peeling resistance of the resin layer is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-retaining, moisture-permeable and waterproof cloth used for various kinds of clothes such as rain clothes and outer clothes.

[0002]

2. Description of the Related Art Conventionally, it has been known that a coated cloth obtained by a wet or dry coating method has a resin layer with a hole and a resin layer without a hole. Generally, when the resin layer is perforated, excellent moisture permeability is easily obtained, but waterproof performance is likely to be insufficient. Conversely, when the resin layer is non-perforated, excellent waterproof performance is easily obtained. The moisture permeability is likely to be insufficient.

For example, a coated cloth obtained by a wet coating method of polyurethane resin is originally excellent in waterproof performance but insufficient in moisture permeability,
Anionic surfactants, nonionic surfactants, hydrophilic polymers, etc. are usually used together to improve the moisture permeability. However, although the moisture permeability of the resulting coated fabric is improved, the waterproof performance is significantly reduced,
As a result, neither of them can satisfy the sufficient performance.

In recent years, for the purpose of compensating for the drawbacks of both, a highly moisture-permeable resin layer having pores is first formed on a fiber cloth, and then a non-porous resin layer is formed on the resin layer to obtain excellent permeability. Attempts have been made to obtain wet performance and waterproof performance, but in this method, a highly moisture-permeable resin layer having pores is at most 5000-6000 g even by the wet method.
Since it has only a moisture permeability of about / m ² · 24 hrs, even if a thin non-porous resin layer is applied next, the moisture permeability is extremely reduced, resulting in excellent moisture permeability. At present, it is difficult to achieve both waterproof performance. Moreover, in this case, coating is performed twice, which is disadvantageous in terms of processing cost.

On the other hand, in Japanese Patent Laid-Open No. 58-4873 and Japanese Patent Publication No. 62-53632, the average particle diameter of which the main component is silicon dioxide is 2 to 50 μm and the total pore volume is 0.2 to 5.
A processing method has been proposed in which a polyurethane resin film containing porous particles of milliliter / g is formed, and then a water repellent having a perfluoroalkyl group is added to obtain a moisture-permeable waterproof fabric. However, even with this method, the moisture vapor transmission rate is at most 3000 g / m ² · 24 hrs, and sufficient moisture vapor transmission performance is not obtained.

Further, Japanese Patent Application Laid-Open No. 2-251672 discloses that it has fine pores smaller than 150Å and has a surface area of 20.
A method for processing a polyester-coated cloth having a resin layer in which inorganic porous particles of 0 m ² / g or more, such as silicon dioxide and titanium oxide, are layered and dispersed at a high concentration has been proposed. It only prevents migration of the dye, and does not have sufficient moisture permeability.

Therefore, the inventors of the present invention have disclosed in JP-A-6-272.
No. 168, the average particle size is 1 μm or less, N,
N-dimethylformamide adsorption amount of 200 ml / 100 g or more by coating a synthetic polymer solution mainly composed of polyurethane resin containing 1% by weight or more of inorganic fine powder, water vapor permeability of 7000 g / m ² · 24hrs or more and 0 We have proposed a fabric with a water pressure resistance of 0.6 kgf / cm ² or more, and have provided a fabric that satisfies both the moisture permeability and the waterproof performance.

[0008] However, these moisture-permeable waterproof cloths have a heat-retaining property although they are useful for releasing water vapor due to perspiration from the body to the outside of clothes and preventing rain from entering the clothes. Because it does not, for cold clothing and ski clothing applications,
We have tried to solve the drawbacks by using a two-layer structure with a heat-retaining lining and a three-layer structure with a batting and a lining. However, in athletic applications, lightness and familiarity with the skin are particularly required, and the above method is heavy and bulky and hinders free movement, so it is not a fundamental solution.

There is also a method in which aluminum powder or carbon powder is added to the coating resin solution for coating so as not to be heavy and bulky, so that the coating resin layer itself has a heat retaining property. The method of kneading aluminum powder, carbon powder, etc. into the above has a problem that the heat retention is not sufficient although bulkiness can be avoided.

[0010]

The present invention has been made in view of such a situation as described above, and has excellent moisture permeability and waterproof performance, and also has sufficient heat retention and is heavy and bulky. It is an object of the present invention to provide a heat-retaining, moisture-permeable and waterproof cloth that does not have such a problem.

[0011]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration. That is, the present invention has a porous resin layer made of a synthetic polymer mainly composed of a polyurethane resin on a fiber cloth, and the average particle diameter of the resin layer is 1 μm or less, and N, N-dimethylformamide is adsorbed in the resin layer. 1% by weight of at least one kind of fine particles having an optical absorption and heat conversion ability of the following [A] to [C] having an amount of 200 ml / 100 g or more of inorganic fine powder of 1% by weight or more and an average particle size of 1 μm or less. Above, 2 to 40 in total
A gist of the present invention is a heat-retaining moisture-permeable and water-repellent fabric, which is characterized by having a moisture content of 7,000 g / m ² · 24 hrs or more and a water pressure resistance of 0.6 kgf / cm ² or more. [A] Fine particles of carbide of a transition metal belonging to Group IV of the periodic table [B] Fine particles of stannic oxide doped with antimony oxide [C] Fine particles of stannic oxide doped with antimony oxide coated on another inorganic substance Hereinafter, the present invention will be described in detail.

The feature of the coated cloth in the present invention is that a fine inorganic powder is uniformly dispersed in a polar organic solvent solution of a synthetic polymer mainly composed of polyurethane resin and applied to the cloth, and then the cloth is immersed in water to form a resin film. It is produced by the so-called wet coating method, and it has a high moisture permeability with fine pores and many pores without deteriorating the waterproof property originally possessed by the polyurethane polymer-based synthetic polymer on the base fabric. The resin layer is formed.

In the present invention, the average particle size in this resin layer is 1
It contains 1% by weight or more of an inorganic fine powder having an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more and having an average particle size of 1 μm.
1% by weight or more of at least one kind of fine particles having the following light absorption heat conversion ability [A] to [C], so that the total amount of the fine particles and the inorganic fine powder is 2 to 40% by weight. Contains. [A] Fine particles of carbide of a transition metal belonging to Group IV of the periodic table [B] Fine particles of stannic oxide doped with antimony oxide [C] Fine particles of stannic oxide doped with antimony oxide coated on another inorganic substance

As the inorganic fine powder used here, inorganic fine powder pulverized by a usual wet pulverizing method or a ball mill pulverizing method, a gas phase oxidation method of a metal halide, a combustion hydrolysis method, an electric arc method, etc. The metal oxide fine powder obtained by the dry method can be mentioned, and among them, the silicon dioxide fine powder produced by these methods can be mentioned as a representative.

The fine powders obtained by these methods generally have a particle size of 0.05 μm or less, and at the same time have a very large amount of N, N-dimethylformamide adsorption, It is suitable as an inorganic fine powder to be added to. Further, if the surface of the fine powder is modified to be hydrophobic, it is more preferable from the viewpoint of water leakage, and it is preferable that the fine powder is substantially non-porous.

The amount of N, N-dimethylformamide adsorbed as used herein means that 5 g of inorganic fine powder is placed on a glass flat plate,
Every time one drop of N, N-dimethylformamide was dropped, the work of kneading was repeated using a spatula made of stainless steel, and N, N-dimethyl required until just before one drop of N, N-dimethylformamide suddenly became soft. It means the volume of formamide (unit: milliliter).
This is the one in which N, N-dimethylformamide was used instead of the oil of SK-5101 boiled linseed.

The inorganic fine powder used in the present invention must have an average particle size of 1 μm or less, and N, N-
Adsorption amount of dimethylformamide is 200ml / 1
It is necessary to be more than 00g, moreover, the average particle size is less than 0.1μm, and 250ml /
A substance having an adsorption amount of N, N-dimethylformamide of 100 g or more is more preferable from the viewpoint of the effect of the present invention. If the average particle size exceeds 1 μm, the fine pore size of the moisture-permeable membrane of the resulting coated fabric becomes too large and the waterproof performance deteriorates, which is not preferable, and the adsorption amount of N, N-dimethylformamide is 200 ml / 1.
When it is less than 00 g, the number of fine pores of the moisture permeable membrane is small and high moisture permeability cannot be obtained, which is not preferable.

The inorganic fine powder used in the present invention must be uniformly contained in an amount of 1% by weight or more, preferably 3% by weight or more, based on the resin layer composed of a synthetic polymer mainly composed of polyurethane resin. Is good. If it is less than 1% by weight, the number of fine pores of the moisture permeable membrane of the coated fabric obtained is small, and high moisture permeability cannot be obtained. Here, the inorganic fine powder does not necessarily have to be highly pure, and may contain other inorganic substances such as pigments and fillers as impurities.

Further, in the present invention, in order to exhibit excellent heat retaining property, it is necessary that the resin layer contains 1% by weight or more of fine particles having a light absorbing heat converting ability. The fine particles having a light absorption and heat conversion ability as used herein mean a substance that absorbs light energy of visible light or near-infrared light, converts the absorbed light energy into heat energy, and emits it. Specifically, [A ] Fine particles of a carbide of a transition metal belonging to Group IV of the periodic table represented by zirconium carbide and hafnium carbide, and [B] antimony oxide-doped stannic oxide (eg, antimony oxide / stannic oxide weight% = 0.
5 / 99.5 to 15.0 / 85.0) fine particles, stannic oxide doped with [C] antimony oxide, and other inorganic substances (titanium oxide, zinc oxide, calcium oxide, calcium carbonate, zinc carbonate, Fine particles coated on calcium sulfate, barium sulfate, aluminum oxide, etc. (eg,
Weight% of antimony oxide / stannic oxide / other inorganic substances =
0.5 / 5.0 / 94.5-2.0 / 18.0 / 80.0), and in the present invention, at least one kind of these fine particles is used.

The average particle size of the above-mentioned fine particles having the ability to convert light absorption and heat used in the present invention must be 1 μm or less. If the average particle size exceeds 1 μm, the waterproof performance of the obtained coated cloth is deteriorated, which is not preferable.

The content of the fine particles having the ability to convert light absorption and heat is 1% by weight or more based on the resin layer composed of a polyurethane resin-based synthetic polymer, and the total amount of the inorganic fine powder is 2 to 40% by weight. It must be in the range of%. When the total content of the fine particles having the ability to convert light absorption and heat and the inorganic fine powder is less than 2% by weight, the desired heat retention cannot be obtained, and when the total content exceeds 40% by weight, the obtained coating resin is obtained. This is not preferable because the physical properties of the layer coating deteriorate, and the moisture permeability and waterproof performance also deteriorate.

The fiber cloth used in the present invention includes polyamide synthetic fibers represented by nylon 6 and nylon 66, polyester synthetic fibers represented by polyethylene terephthalate, polyacrylonitrile synthetic fibers,
Fabrics and knits made of semi-synthetic fibers such as polyvinyl alcohol synthetic fibers and triacetate or mixed fibers of nylon 6 / cotton, polyethylene terephthalate / cotton, etc.
Nonwoven fabrics and the like can be mentioned.

In the present invention, the above fiber cloth treated with a water repellent may be used. This is one means for preventing the penetration of the resin solution into the fabric during manufacturing. In this case, the water repellent may be a known one such as a paraffin water repellent, a polysiloxane water repellent, or a fluorine water repellent, and the treatment thereof is also a commonly used padding method, spray method, or the like. The known method may be used. When particularly good water repellency is required, a fluorine-based water repellent is used. For example, Asahi Guard 730 (Asahi Glass Co., Ltd., fluorine-based water repellent emulsion) is padded (squeezed) with a 5% aqueous dispersion. The heat treatment at 160 ° C. for 1 minute, and the like.

In the heat insulating and moisture permeable waterproof fabric of the present invention,
A synthetic polymer solution mainly composed of a polyurethane resin containing inorganic fine powder and fine particles having a light absorbing heat converting ability is applied onto the above-mentioned fiber cloth by a wet coating method.

The polyurethane resin-based synthetic polymer referred to herein means one containing 50 to 100% by weight of a polyurethane component, and other synthetic polymers include, for example, polyacrylic acid, polyvinyl chloride, polystyrene and polybutadiene. , Polyamino acids and their copolymers, etc.
It is sufficient if the content is less than wt%, and of course, a compound modified with fluorine, silicon or the like can be used in the present invention.

Polyurethane resin is a copolymer obtained by reacting polyisocyanate and polyol,
As an isocyanate component, aromatic diisocyanate,
Using aliphatic diisocyanate and alicyclic diisocyanate alone or a mixture thereof,
2,4-diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,6-hexane diisocyanate, 1,
4-cyclohexane diisocyanate, etc.,
Polyether polyol, polyester polyol are used as the polyol component, polyethylene glycol, polypropylene glycol, polytetramethylene glycol, etc. are used as the polyether polyol, and diols such as ethylene glycol, propylene glycol and adipic acid, sebacine are used as the polyester polyol. 2 such as acid
A reaction product with a basic acid or a ring-opening polymer such as caprolactone is used.

The above-mentioned synthetic polymer solution containing a polyurethane resin as a main component, which contains inorganic fine powder and fine particles capable of converting light absorption and heat, is appropriately coated by a conventional coating method such as knife coater, comma coater or reverse coater. However, in order to obtain the desired water pressure resistance of 0.6 kgf / cm ² or more, it depends on the smoothness of the coated surface of the fiber cloth and the air permeability (JIS L-1096 method), but in general, Resin film weight is 5g / m ² or more,
It is preferable to control the coating amount so that the coating amount is 10 g / m ² or more.

In the present invention, for the purpose of improving the peeling resistance between the resin layer and the fiber cloth, a compound having a high affinity with the resin or the fiber cloth may be used in combination, and an isocyanate compound may be used in combination as the compound. . As the isocyanate compound, 2,4-tolylene diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate or a compound containing 3 mol of these diisocyanates and active hydrogen (eg, trimethylolpropane, glycerin, etc.) 1
Triisocyanates obtained by addition reaction with moles can be used. The above isocyanates may be in a form in which the isocyanate group is free, or may be in a form in which the block is dissociated by the subsequent heat treatment, which is stabilized by adding phenol, methylethylketoxime and the like, It may be properly used depending on workability and purpose.

The amount of the isocyanate compound used is preferably 0.1 to 10% by weight based on the synthetic polymer mainly composed of the polyurethane resin.
If the amount used is less than 0.1% by weight, the adhesive strength of the resin layer to the fabric is low, and if it exceeds 10% by weight, the texture tends to harden, which is not preferable.

In the present invention, a resin solution composed of a polyurethane resin-based synthetic polymer as described above is applied to a fiber cloth and then immersed in water of 0 to 30 ° C. for 0.5 to 10 minutes to perform wet coagulation of the resin content. I do. Below, 5 in warm water of 40-60 ℃
After washing for -15 minutes, dry in the usual way.

In the present invention, for the purpose of further improving waterproofness, the coated cloth may be subjected to a water repellent treatment after wet coating. For the water repellent treatment, a known water repellent treatment method which is generally performed as described above may be employed. Further, when it is desired to further improve the waterproof performance, a dry film thickness of 0.5 on the wet coating layer of the present invention.
A non-porous polyurethane resin layer or the like having a thickness of about 2 μm may be formed. Since the wet coating layer has high water pressure resistance, the waterproof performance is synergistically improved even with a thin film, and the moisture permeability is not significantly reduced.

[0032]

The heat-retaining, moisture-permeable and waterproof cloth of the present invention has an average particle size of 1 μm in the resin layer of the synthetic polymer mainly composed of polyurethane resin.
Excellent moisture permeability and waterproof performance can be obtained by incorporating the following inorganic fine powder having an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more and fine particles having a light absorbing heat converting ability. In addition, it also has sufficient heat retention. Because of the inclusion of inorganic fine powder having an average particle size of 1 μm or less and an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more and fine particles having a light absorption heat conversion ability, excellent moisture permeability can be obtained. It has performance and waterproof performance,
Moreover, is it possible to obtain sufficient heat retention at the same time?
Although not clearly clarified, the present inventors presume as follows.

That is, a synthetic polymer solution mainly composed of a polyurethane resin in which an inorganic fine powder having an average particle size of 1 μm or less and an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more is uniformly dispersed is cloth. When wet coating is performed by coating on water, water as a coagulating liquid and N, N-dimethylformamide as a resin solvent are mixed,
The resin is solidified by the rapid release of the solvent from the resin liquid. At that time, the inorganic fine powder has an average particle size of 1 μm or less and an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more. Is uniformly dispersed in the resin solution, the surface of the inorganic fine powder has a higher concentration of N, N-dimethylformamide in the resin solution than the other parts. Since the concentration of the polymer is low, water, which is the coagulating liquid, is first replaced by N, N-dimethylformamide on the surface of the inorganic fine powder during the wet coagulation process, and the solidification rapidly starts around the inorganic fine powder. After that, the entire resin solidifies, resulting in a faster solidification rate, and in addition to the honeycomb structure peculiar to urethane resin, it has an infinite number of fine pores of 1 μm or less. It is supposed to have a porous form.

When fine particles having a light absorption and heat conversion ability are contained in the resin layer of such a synthetic polymer mainly composed of polyurethane resin, the fine particles have a wavelength of 0.3 to 2 μm containing 95% or more of solar energy. Since it has the ability to selectively absorb the sunlight in the region, convert it into thermal energy of wavelength 2 to 20 μm (far infrared) and emit it, and the ability to reflect the thermal energy of wavelength 2 to 20 μm, The energy once absorbed can be efficiently radiated inside, and the heat energy from the body can be blocked and reflected to suppress the leakage of heat energy to the outside. Therefore, a cloth having such a resin layer can be obtained. 、 It comes to show extremely good heat retention.

In the present invention, excellent waterproofness is exhibited due to the fineness of the formed fine pores, and high moisture permeability is exhibited due to the innumerable minute pores, which is characteristic of a highly moisture-permeable waterproof fabric. However, it is also very effective for water leakage, which tends to cause problems when pressure is applied during wearing. Further, since the inorganic fine powder of the present invention is present uniformly from the surface layer to the lower layer of the resin layer, the resin layer surface eliminates the slimy feeling peculiar to the polyurethane resin to give a dry touch and the abrasion resistance of the entire resin layer. And improves the adhesive strength.

[0036]

EXAMPLES The method for producing the heat-retaining, moisture-permeable and waterproof fabric of the present invention will be specifically described below with reference to the examples. The measurement and evaluation of the performance of the fabrics in the examples were carried out by the following methods. (1) Water pressure resistance JIS L-1092 (high water pressure method) (2) Water vapor permeability JIS L-1099 (A-1 method) (3) Abrasion strength JIS L-1084 (A-1 method)

(4) Peel strength A hot-melt tape having a width of 2.54 cm was adhered to the coated surface in the longitudinal direction by a hot press bonding method, and JIS L-108 was used.
Measured according to method 9. (5) Heat retention In a thermostatic chamber at 20 ° C and 60% RH, using a white light source of 100 W for photography as an energy source, the surface temperature of the cloth is a thermoviewer (infrared sensor, manufactured by JEOL Ltd.).
It was measured at. (6) Feeling Feeling was relatively evaluated by handling in the following three stages. ○: Soft △: Slightly hard ×: Hard

Example 1 Nylon high multifilament 7 for both warp and weft
Using 0 denier / 68 filament, warp density is 1
After weaving a plain woven fabric with 20 yarns / inch and weft density of 90 yarns / inch, scouring and dyeing (Diacid Fast Red 3BL 2% owf of acid dye manufactured by Mitsubishi Kasei Co., Ltd.) were carried out by a usual method, and then fluorine was used. A water-repellent emulsion of Asahi Guard 710 (manufactured by Asahi Glass Co., Ltd.) was padded with a 5% aqueous dispersion (squeeze ratio: 35%), dried, and then heat-treated at 160 ° C. for 1 minute. Next, using a calendering machine with a mirror surface roll, the temperature was 170 ° C., the pressure was 30 kg / cm ² , and the speed was 20.
Calendering was performed under the condition of m / min to obtain a base fabric for coating.

Here, a polyurethane resin solution having a composition shown in the following Formulation 1 and a solid content concentration of 28% was applied to the calendar surface of the above-mentioned base cloth by using a knife over roll coater in an amount of 8
Immediately after application at 0 g / m ² , 40
Immerse for 2 seconds to solidify the resin component, followed by washing for 10 minutes in warm water at 50 ° C., and then drying to remove inorganic fine powder to 8
%, And a resin layer containing 13.5% of fine particles having a light absorption heat conversion ability was formed.

Formulation 1 Laxkin 1740-29B 100 parts (Seiko Chemical Co., Ltd., ester type polyurethane resin) Resamine X-100 1 part (Dainichi Seika Chemicals Co., Ltd., isocyanate compound) N, N-dimethylformamide 25 parts Aerosil R-972 3 parts (manufactured by Nippon Aerosil Co., Ltd., average particle size 0.016 μm,
N, N-dimethylformamide adsorbed amount 350 ml / 100 g of hydrophobic silicon dioxide fine powder) Zirconium carbide 5 parts (manufactured by Nippon Shinkin Co., Ltd., average particle size 0.8 μm)

Next, using a gravure coater, the coated surface was coated with a 5% aqueous dispersion of Asahi Guard 710 at a coating amount of 15 g / m ^{2 in} order to make it water repellent, and after drying, it was dried at 160 ° C. for 1 minute. Was heat-treated to obtain the heat-retaining, moisture-permeable and waterproof fabric of the present invention.

For comparison with the present invention, the amount of Aerosil R-972 used in Formulation 1 of Example 1 was 0.3 parts (inorganic fine powder content: 0.9%), but this Example was used. A processed fabric for comparison (referred to as Comparative Example 1) was obtained by the same method as above. Further, for comparison with the present invention, except that the amount of zirconium carbide used in Formulation 1 of Example 1 is 0.3 parts (content of fine particles having light absorption and heat conversion ability is 0.9%), A processed fabric for comparison (referred to as Comparative Example 2) was obtained by the same method as in this example. Further, for comparison with the present invention, except that the amount of zirconium carbide used in Formulation 1 of Example 1 was 17 parts (the total content of the fine particles having light absorption and heat conversion ability and the inorganic fine powder was 41%). A processed fabric for comparison (referred to as Comparative Example 3) was obtained by the same method as in this example.

Measuring the performance of the fabrics of the invention and of the comparison,
The results are evaluated and the results are shown together in Table 1.

[0044]

[Table 1]

As is clear from Table 1, the fabric of the present invention has not only excellent water pressure resistance and moisture vapor transmission rate but also good heat retention, and also good abrasion resistance and peeling resistance. I understand.

Example 2 Nylon high multifilament 7 for both warp and weft
Using 0 denier / 68 filament, warp density is 1
After weaving a plain woven fabric with 20 yarns / inch and weft density of 90 yarns / inch, scouring and dyeing (Diacid Fast Red 3BL 2% owf of acid dye manufactured by Mitsubishi Kasei Co., Ltd.) were carried out by a usual method, and then fluorine was used. A water-repellent emulsion of Asahi Guard 710 (manufactured by Asahi Glass Co., Ltd.) was padded with a 5% aqueous dispersion (squeeze ratio: 35%), dried, and then heat-treated at 160 ° C. for 1 minute. Next, using a calendering machine with a mirror surface roll, the temperature was 170 ° C., the pressure was 30 kg / cm ² , and the speed was 20.
Calendering was performed under the condition of m / min to obtain a base fabric for coating.

Here, a polyurethane resin solution having a composition shown in the following formulation 2 and a solid content concentration of 27% was applied to the calender surface of the above-mentioned base cloth by using a knife over roll coater in an amount of 8
Immediately after application at 0 g / m ² , 40
Immersion for 2 seconds to solidify the resin component, followed by washing in warm water at 50 ° C for 10 minutes, followed by drying, containing 9% of inorganic fine powder and 9% of fine particles capable of converting light absorption and heat. To form a resin layer.

Formulation 2 Laxkin 1740-29B 100 parts (Seiko Chemical Co., Ltd., ester type polyurethane resin) Resamine X 1 part (Dainichi Seika Chemicals Co., Ltd., isocyanate compound) N, N-dimethylformamide 25 parts Alumina AKP -G015 3 parts (Sumitomo Chemical Co., Ltd., average particle size 0.03 μm, N,
N-dimethylformamide adsorption amount 310 ml /
100 g of hydrophobic aluminum trioxide fine powder) T-1 3 parts (manufactured by Mitsubishi Metals Co., Ltd., average particle size obtained by doping stannic oxide with antimony oxide at a ratio of former 9 to latter 1)
Fine powder with light absorption and heat conversion capacity of 0.02 μm)

Next, using a gravure coater, the coated surface was coated with a 5% aqueous dispersion of Asahi Guard 710 at a coating amount of 15 g / m ^{2 in} order to make the coating surface water-repellent, dried, and then dried at 160 ° C. for 1 hour. Heat treatment was performed for 1 minute to obtain the heat-retaining moisture-permeable and waterproof fabric of the present invention.

Formulation 2 of this Example for comparison with the present invention
In place of alumina AKP-G015, crystallite VX-X (manufactured by Shiraishi Calcium Co., average particle size 1.
8 μm, N, N-dimethylformamide adsorption amount 60 ml / 100 g silicon dioxide fine powder) 3 parts (inorganic fine powder content 8%) were used, except that the same processing as in this example was used for comparison. A cloth (referred to as Comparative Example 4) was obtained. Further, for comparison with the present invention, in the present embodiment, except that 5 parts of aluminum powder was used in place of T-1 in Formula 2 to form a resin layer containing 13.5% aluminum powder, A processed fabric for comparison (referred to as Comparative Example 5) was obtained by the same method as that of the example.

Measuring the performance of the fabrics of the invention and of the comparison,
The results are evaluated and the results are shown together in Table 2.

[0052]

[Table 2]

As is clear from Table 2, the fabric of the present invention has excellent water pressure resistance and water vapor transmission rate, exhibits good heat retention, and has good abrasion resistance and peeling resistance. there were.

Example 3 Polyester 75 dyeable with a cationic dye for both warp and weft
Warp density 107 using denier / 48 filament
A plain weave (taffeta) with a book / inch and weft density of 92 / inch is prepared and scoured and dyed by the usual method (Sumitomo Chemical Co., Ltd., cationic dye Estrol Brilliant
After performing Blue N-3RL 3% owf), padding with a 5% aqueous dispersion of fluorine-based water repellent emulsion Asahi Guard 710 (manufactured by Asahi Glass Co., Ltd.) (squeeze ratio 35%), drying, and then at 160 ° C. Heat treatment was performed for 1 minute. Next, using a calendering machine with a mirror surface roll,
Calendering was performed under the conditions of ℃, pressure of 30 kg / cm ² and speed of 20 m / min to obtain a base fabric for coating.

Here, a polyurethane resin solution having a composition shown in the following formulation 3 and a solid content of 28% was applied to the calender surface of the above-mentioned base cloth using a knife over roll coater in an amount of 8
Immediately after application at 0 g / m ² , 40
Immerse for 2 seconds to solidify the resin component, followed by washing for 10 minutes in warm water at 50 ° C., and then drying to remove inorganic fine powder to 8
%, And a resin layer containing 13.5% of fine particles having a light absorption heat conversion ability was formed.

Formulation 3 Laxkin 1740-29B 100 parts (Seiko Chemical Co., Ltd., ester type polyurethane resin) Resamine X 1 part (Dainichi Seika Chemicals Co., Ltd., isocyanate compound) N, N-dimethylformamide 25 parts Aerosil R -974 3 parts (manufactured by Nippon Aerosil Co., Ltd., average particle size 0.012 μm,
N, N-dimethylformamide adsorption amount 350 ml / 100 g of hydrophobic silicon dioxide fine powder W-1 5 parts (manufactured by Mitsubishi Metals Co., average particle size 0.2 μm, antimony oxide / stannic oxide / titanium oxide = 1.5% / 3.5% / 8 5.
0%)

Then, using a gravure coater, the coated surface was coated with a 5% aqueous dispersion of Asahi Guard 710 at a coating amount of 15 g / m ^{2 in} order to make it water-repellent, and after drying, it was dried at 160 ° C. for 1 minute. Was heat-treated to obtain the heat-retaining, moisture-permeable and waterproof fabric of the present invention.

Formula 3 of this example for comparison with the present invention
In place of Aerosil R-974 alumina A-4
2-6 (Showa Denko KK, average particle size 5 μm, N, N
-Amount of dimethylformamide adsorbed 32 ml / 10
A processed fabric for comparison (comparative example) was prepared in the same manner as in this example except that 3 parts of 0 g of aluminum trioxide fine powder was used to form a resin layer containing 8% of alumina A-42-6. 6). For comparison with the present invention, 5 parts of aluminum powder was used in place of W-1 in Formulation 3 of this example, and 13.5% of aluminum powder was used.
A processed fabric for comparison (referred to as Comparative Example 7) is manufactured by the same method as that of this example except that the resin layer to be contained is formed.
I got

Measuring the performance of the fabrics of the invention and of the comparison,
The results of evaluation are shown in Table 3 together.

[0060]

[Table 3]

As is clear from Table 3, the fabric of the present invention has not only excellent water pressure resistance and moisture permeability but also good heat retention, abrasion resistance and peeling resistance. there were.

[0062]

EFFECTS OF THE INVENTION According to the present invention, it is possible to obtain a coated fabric having excellent moisture permeability and excellent waterproof performance, as well as good heat retention. Furthermore, the heat-retaining, moisture-permeable and waterproof fabric of the present invention has excellent abrasion resistance and peeling resistance of the coating resin layer.

According to the present invention, excellent moisture permeability and waterproofness,
A moisture-permeable waterproof fabric that also has heat-retaining properties can be obtained at a low cost because it can be obtained only by performing wet coating, which is very advantageous industrially. Due to its excellent performance, the heat-retaining, moisture-permeable and waterproof cloth of the present invention is a material particularly suitable for clothes such as cold clothes, ski wear, outerwear, and rainwear.

Claims (1)

[Claims] 1. A fiber cloth having a perforated resin layer made of a synthetic polymer mainly composed of a polyurethane resin, wherein the resin layer has an average particle diameter of 1 μm or less, and an adsorption amount of N, N-dimethylformamide. 1% by weight or more of at least one of the following [A] to [C] fine particles having an optical absorption and heat conversion ability of 1% by weight or more of an inorganic fine powder of 200 ml / 100 g or more and an average particle size of 1 μm or less. , 2 to 40 in total
A heat-retaining moisture-permeable and waterproof fabric characterized by having a moisture content of 7,000 g / m ² · 24 hrs or more and a water pressure resistance of 0.6 kgf / cm ² or more by weight%. [A] Fine particles of carbide of a transition metal belonging to Group IV of the periodic table [B] Fine particles of stannic oxide doped with antimony oxide [C] Fine particles of stannic oxide doped with antimony oxide coated on another inorganic substance