JPH0987975A - Adiabatically heat-retaining, moisture-permeating and waterproofing fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain fiber fabrics excellent in adiabatic heat retention, moisture permeation and waterproof properties. SOLUTION: A fiber fabric is coated through a wet coating process with a synthetic polymer mainly comprising polyurethane resin containing 1-40wt.% of inorganic fine particles with an average particle size of <=1μm and an N,N- dimethylformamide adsorption of >=200ml/100g to form a resin layer. Then, a resin for forming the skin layer containing 1-40wt.% of fine particles of alumina, which has the α-type crystalline form and is surface-treated with a fatty acid metal salt, is printed on the polyurethane resin layer in a range from 20 to 80wt.%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moisture-permeable waterproof cloth excellent in heat insulation and heat retention.

[0002]

2. Description of the Related Art Conventionally, in winter clothes and sports clothes, an air layer (dead air) of batting has been used due to a three-layer structure in which batting is inserted between a breathable and waterproof outer material and its lining. And has been able to retain heat. Such 3
The layered fabric has a drawback that it is heavy and bulky as a sports garment that is particularly required to be easy to move and hinders free movement.

In recent years, a heat-retaining cloth that reflects body heat by using a cloth on which a metal such as aluminum, stainless steel or titanium is vapor-deposited as a lining (JP-A-59-156743).
No.) or transition metal carbide represented by zirconium carbide is contained in the fiber to absorb solar energy,
A heat retaining cloth (Japanese Patent Publication No. 9202) that converts the absorbed light energy into heat energy and emits it has been proposed, and the amount of batting used in these heat retaining cloths should be reduced or not used at all. As a result, the above-mentioned drawback of being heavy and bulky and hindering free movement has been solved.

However, the above-mentioned cloth on which metal such as aluminum, stainless steel or titanium is vapor-deposited increases the cost associated with the vapor-deposition processing, causes vapor deposition unevenness due to delicate handling of the cloth in the preparatory step before the vapor-deposition processing, and is washed or worn. There were various problems such as the deterioration of heat insulation performance due to the removal of evaporated metal due to friction during the process. In addition, the heat-retaining fabric containing transition metal carbides represented by zirconium carbide in the fiber has sufficient heat-retaining property under the irradiation of sunlight, but obtains sufficient heat-retaining property under non-irradiation or in the shade. There was a problem that I could not.

Therefore, the present applicant has filed Japanese Patent Application No. 6-1049.
In No. 50, “A resin layer made of a synthetic polymer mainly composed of polyurethane resin is provided on a fiber cloth, the average particle size is 5 μm or less, the crystal type is α type, and the fatty acid metal salt is A moisture-permeable waterproof cloth having heat retention, characterized in that the surface-treated aluminum oxide is contained in an amount of 1% by weight or more. However, the above-mentioned invention has a problem that it is difficult to uniformly mix the fine particles of aluminum oxide depending on the resin system to be applied, resulting in poor coating quality and difficulty in obtaining further excellent moisture permeation and waterproof properties.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of such a situation as described above, and has a good heat insulating and heat retaining property even in the shade without performing post-processing such as vapor deposition processing.
It is an object of the present invention to obtain a heat-insulating, heat-retaining and moisture-permeable waterproof cloth excellent in moisture permeability and waterproofness.

[0007]

The present invention attains the above object and has the following constitution. That is, the present invention provides that "the average particle diameter is 1 μm or less and the amount of N, N-dimethylformamide adsorbed on the fiber cloth is 20.
0-40 ml of inorganic fine powder of 0 ml / 100 g or more
It has a perforated resin film made of a synthetic polymer mainly composed of polyurethane resin, containing 5% by weight, and has an average particle size of 5 μm on the resin film.
A film-forming resin containing 1 to 40% by weight of aluminum oxide fine particles having a crystal type of α or less and a crystal form of α type and surface-treated with a fatty acid metal salt is printed in the range of 20 to 80%. The heat-insulating and heat-retaining moisture-permeable waterproof cloth characterized by

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.
Examples of the fiber cloth used in the present invention include polyamide synthetic fibers represented by nylon 6 and nylon 66, polyester synthetic fibers represented by polyethylene terephthalate, polyacrylonitrile synthetic fibers, polyvinyl alcohol synthetic fibers, triacetate and the like. A woven fabric, a knitted fabric, a non-woven fabric and the like made of a semi-synthetic fiber or a mixed fiber of nylon 6 / cotton, polyethylene terephthalate / cotton and the like can be mentioned.

In the present invention, the above fiber cloth may be treated with a water repellent agent. 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.

The cloth of the present invention comprises 1 to 40 parts by weight of 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 on the fiber cloth as described above. % Of a polyurethane resin-based synthetic polymer having a perforated resin film. In such a fabric of the present invention, a fine inorganic powder is uniformly dispersed in a polar organic solvent solution of a synthetic polymer mainly composed of a polyurethane resin and applied to the fabric, and then immersed in water to form a resin film. The wet coating method is used to form a film, and a highly moisture-permeable resin layer with a large number of pores is formed on the fibrous fabric that serves as the base fabric without deteriorating the waterproof property originally possessed by the polyurethane resin-based synthetic polymer. Form.

This resin layer has an average particle size of 1 μm or less,
In addition, it contains 1 to 40% by weight of inorganic fine powder having an adsorption amount of N, N-dimethylformamide of 200 ml / 100 g or more. As the inorganic fine powder used here, inorganic fine powder finely 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 or the like dry method. The metal oxide fine powder obtained by the above 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 adsorbed, It is suitable as an inorganic fine powder to be added to. Furthermore, 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 here means that 5 g of inorganic fine powder is placed on a glass plate, and each time one drop of N, N-dimethylformamide is added, the work of kneading with a stainless steel spatula is repeated. , N, N-dimethylformamide means the volume (unit: milliliter) of N, N-dimethylformamide required until immediately before softening rapidly with one drop, instead of boiling oil in JIS K-5101 Using N, N-dimethylformamide.

The inorganic fine powder used in the present invention is required to have an average particle size of 1 μm or less, and N, N-
Dimethylformamide adsorption is 200ml / 1
It is necessary that the average particle size is 0.1 μm or less and 250 ml / 1
It is even more preferable that it has an adsorption amount of N, N-dimethylformamide of not less than 00 g from the viewpoint of the effect of the present invention. If the average particle size exceeds 1 μm, the pore size of the moisture-permeable membrane of the obtained coated fabric becomes too large and the waterproof performance deteriorates, which is not preferable. In addition, the amount of N, N-dimethylformamide adsorbed is 200 ml / 10
If it is less than 0 g, the number of micropores in the moisture permeable membrane is reduced, and high moisture permeability cannot be obtained.

The inorganic fine powder used in the present invention is uniformly dispersed in a resin layer made of a synthetic polymer mainly composed of polyurethane resin in an amount of 1 to 4
It is necessary to contain 0% by weight, more preferably 3 to 30% by weight. If it is less than 1% by weight, the number of fine pores of the moisture permeable membrane of the obtained coated fabric is small and high moisture permeability cannot be obtained.
If it exceeds, the resin film becomes weak and cannot be put to practical use.
Further, the inorganic fine powder does not necessarily need to be of high purity, and may contain other inorganic substances, such as pigments and fillers, as impurities.

The polyurethane resin-based synthetic polymer referred to in the present invention is 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.

The polyurethane resin is a copolymer obtained by reacting an isocyanate with a polyol, and aromatic diisocyanate, aliphatic diisocyanate and alicyclic diisocyanate are used alone or as a mixture thereof as an isocyanate component. 2,4
-Diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,6-hexane diisocyanate, 1,4-
Cyclohexane diisocyanate or the like is used, as the polyol component, polyether polyol or polyester polyol is used, the polyether polyol is polyethylene glycol, polypropylene glycol, polytetramethylene glycol or the like, and the polyester polyol is ethylene glycol or propylene glycol. Such as diol and adipic acid, sebacic acid, etc. 2
A reaction product with a basic acid or a ring-opening polymer such as caprolactone is used.

Further, the above-mentioned synthetic polymer solution mainly composed of polyurethane resin containing inorganic fine powder may be appropriately coated by a usual coating method, for example, knife coater, comma coater, reverse coater, etc. In order to obtain the property, it depends on the smoothness of the coated surface of the fiber cloth and the air permeability (JIS L-1096 method), but generally, the resin film weight is 5 g / m ² or more, preferably 10 g / m ² It is advisable to adjust the coating amount so that the coating is performed.

In the present invention, for the purpose of improving the peel 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, tolylene 2,4-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 is less than 0.1% by weight, the adhesive strength of the resin layer to the fabric is low, and if it is more than 10% by weight, the hand tends to be hardened, which is not preferable.

In the present invention, after the resin liquid composed of the synthetic resin mainly composed of the polyurethane resin as described above is applied to the fiber cloth, it is immersed in water at 0 to 30 ° C. for 0.5 to 10 minutes to perform wet coagulation of the resin component. I do. Below, 5 in warm water of 40-60 ℃
After washing for about 15 minutes, it is dried by an ordinary method to form a resin film having a hole.

In the cloth of the present invention, 1 to 40 parts by weight of aluminum oxide fine particles having an average particle diameter of 5 μm or less, a crystal type of α type and a surface treatment with a fatty acid metal salt are formed on the resin film. % Film-forming resin content is 20-80
Printed in the range of%. Here, when printing is performed on the resin film in a print occupying area within a range of 20 to 80%, printing is performed uniformly over the entire surface of the fabric so as not to be biased. The aluminum oxide used here satisfies three conditions: (1) crystal form is α type, (2) surface-treated with fatty acid metal salt, and (3) average particle size is 5 μm or less. There is a need.

In general, the crystal form of aluminum oxide is α
Besides κ type, κ type, θ type, δ type, η type, χ type, ρ type, γ type are known, but the ones obtained by surface-treating a fatty acid metal salt on crystalline aluminum oxide other than α type Even if it is used, the desired heat retaining property of the present invention cannot be obtained. Further, even if α-type aluminum oxide is not surface-treated with a fatty acid metal salt, good heat retention cannot be exhibited. Here, in order to obtain aluminum oxide whose crystal form is α type, for example, naturally occurring bauxite or gibbsite is used as a starting material, and sodium hydroxide is allowed to act on this to form aluminum in the material into sodium aluminate, Hydrolyze into aluminum hydroxide such as gibbsite, vialite, boehmite, etc.
It can be obtained by a known method of thermally decomposing at 1200 ° C or higher.

The fatty acid metal salt which is a surface treatment agent for the aluminum oxide fine particles used in the present invention is obtained by heating a fatty acid and a metal oxide, a metal hydroxide or the like. Examples thereof include sodium stearate, magnesium stearate, calcium stearate, sodium oleate, lithium oleate, magnesium oleate, sodium laurate, calcium laurate, and sodium dioctylsulfosuccinate.

The surface treatment of the aluminum oxide with the fatty acid metal salt is carried out by, for example, adding aluminum oxide fine particles to an aqueous solution or organic solvent solution in which the fatty acid metal salt is dissolved, stirring and dispersing, and then spray drying. The surface treatment can be carried out by a known method. The amount of the fatty acid metal salt deposited on the surface of the aluminum oxide fine particles varies depending on the particle size of the aluminum oxide used and the type of the fatty acid metal salt, and is not particularly limited in the present invention. It is preferably 5% or less based on the weight. The aluminum oxide fine particles used in the present invention need to have an average particle size of 5 μm or less, preferably 2 μm or less, and more preferably 1 μm or less. If the average particle diameter exceeds 5 μm, problems such as clogging of the screen occur when printing the film-forming resin containing the aluminum oxide fine particles on the fiber cloth, which is not preferable.

As the film-forming resin used in the present invention,
A film is formed by heat treatment and becomes insoluble in water. Examples thereof include polyurethane, polyacrylic acid, polymethacrylic acid, polyester, polyamide, and polyamino acid urethane copolymer. If a polyurethane resin having moisture permeability is mainly used, it is more effective in view of the texture and moisture permeability of the obtained fabric.

In the present invention, the above film-forming resin is made to contain fine particles of aluminum oxide.
It is necessary to contain the resin in an amount of 1 to 40% by weight, and more preferably 3 to 30% by weight. If the content is less than 1% by weight, the desired heat retaining property cannot be obtained, and if it exceeds 40% by weight, the resin film becomes weak and cannot be put to practical use, which is unsuitable. As a method of incorporating the aluminum oxide fine particles into the resin, a method of adding a predetermined amount of the aluminum oxide fine particles at the time of adjusting the resin solution to be used and sufficiently mixing with a stirrer matching the viscosity of the resin solution may be adopted.

In the present invention, the film-forming resin containing the above-mentioned aluminum oxide fine particles is printed on the above-mentioned resin film surface, and the printed pattern is, specifically, a dot shape, a linear shape, a dotted line shape, A pattern such as a broken line pattern, a combination pattern thereof, a polka dot pattern, a lattice pattern, a staggered pattern, etc. can be mentioned, but in order to obtain excellent heat insulating and heat retaining property in the present invention, a pattern area is small and uniform. Is desirable. The print occupying area occupied by the print pattern cloth varies depending on the surface morphology of the fiber cloth used, the type of film-forming resin, and the content of aluminum oxide fine particles, but is usually in the range of 20 to 80% of the surface area of the fiber cloth. Must be in
It is preferably in the range of 30 to 70%. If the print occupancy area is less than 20%, the desired heat retention cannot be obtained, and if it exceeds 80%, not only the effect of heat retention reaches saturation, but the texture of the obtained fabric itself becomes hard, which is preferable. Absent. The printing method may be an ordinary printing method, for example, a flat screen printing method, a rotary screen printing method, a roller printing method or the like.

In the present invention, the same isocyanate compound as described above is used in combination with the film-forming resin for the purpose of improving the peel resistance between the film-forming resin containing fine particles of aluminum oxide and the surface of the wet coating resin film. You may. In the present invention, for the purpose of further improving waterproofness, water-repellent treatment may be performed after printing a film-forming resin containing aluminum oxide fine particles. For the water repellent treatment, the well-known water repellent treatment that is generally carried out as described above may be adopted. Further, in order to further improve waterproofness in the present invention, a non-porous polyurethane resin having a dry film thickness of about 0.5 to 2 μm is formed on the surface of the wet coating resin film, and then the resin film is formed on the resin film. You may print the film-forming resin containing the above-mentioned aluminum oxide fine particles. Since the wet coating resin film has high water pressure resistance, waterproof performance is synergistically improved even with a thin film.
In addition, there is little deterioration in moisture permeability.

In the present invention, after the film-forming resin is printed, heat treatment is performed to fix the resin.
The heat treatment condition at this time may be an appropriate temperature and time depending on the type of fiber and the amount of each resin deposited.
It is performed at 0 to 180 ° C. for about 0.5 to 3 minutes. The present invention has the above configuration.

[0030]

The heat insulating and moisture permeable and waterproof cloth of the present invention is a resin film containing 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. By printing a resin containing aluminum oxide fine particles on the surface,
It has excellent moisture permeability, waterproofness and heat insulation. Why the average particle size is less than 1 μm and N,
Although it has not been clearly clarified whether excellent moisture permeability and waterproof performance can be obtained at the same time by including an inorganic fine powder having an N-dimethylformamide adsorption amount of 200 ml / 100 g or more, the present invention is not clear. They speculate as follows.

That is, a synthetic polymer solution composed mainly of a polyurethane resin in which an inorganic fine powder having an average particle diameter 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. In other words, it is a synthetic resin mainly composed of polyurethane resin. The concentration of the coalesced is low, so that in the wet coagulation process, water as the coagulating liquid first replaces N, N-dimethylformamide on the surface of the inorganic fine powder, and the solidification rapidly starts around the inorganic fine powder, and thereafter As the whole resin is solidified, the solidification rate will be faster as a result, 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.

Further, in the present invention, α-type aluminum aluminum oxide fine particles having a low thermal conductivity are used in order to obtain excellent adiabatic heat retention, but the thermal conductivity is lowered even if they are contained in the resin as they are. Therefore, the desired adiabatic heat retention cannot be obtained. However, if the α-type aluminum oxide fine particles surface-treated with a fatty acid metal salt are used as in the present invention, the reason is not clear, but
The thermal conductivity can be lowered, the compatibility with the film-forming resin is improved, and the fine particles are easily uniformly micro-dispersed in the resin, which is more effective. Furthermore, since the film-forming resin printing process of the present invention is fine and uniform regardless of the shape, the resin surface after the printing process, that is, the back surface when used as a garment, has fine and uniform unevenness, resulting in As a result, when worn, the air layer (dead air) is easily maintained, and synergistically excellent heat insulation is exhibited.

[0033]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples. The performance of fabrics in Examples was measured by the following method. (1) Water pressure resistance JIS L-1092 (high water pressure method) (2) Water vapor permeability JIS L-1099 (A-1 method) (3) Wear strength JIS L-1084 (A-1 method) (4) Adiabatic heat retention Precise and rapid thermophysical property measuring device KES-F as shown in the side sectional view of Fig. 1 in a room of constant temperature and humidity of 20 ° C and 65% humidity.
7 (manufactured by Kato Tech Co., Ltd.) was installed, the sample 2 was placed on the Water Box 1 kept at a temperature of 22 ° C., and a constant temperature box (hereinafter referred to as BT Box) 3 kept at a temperature of 32 ° C. was further placed thereon. Place the hot plate 4 so that it contacts the sample 2,
After 5 minutes, read the heat consumption with the heat consumption detector 5,
The thermal conductivity H (W / cm · ° C) was calculated using the following formula [1]. H = (W / S × D) / ΔT [1] W: Heat consumption (W) S: Area of the heat plate part 4 of the BTBox (cm ² ) D: Thickness of the sample (cm) ΔT: BTBox and Water Box Temperature difference with (℃)

Example 1 Nylon high multifilament 7 for both warp and weft
Warp density 120 using 0 denier / 68 filament
Prepare a plain woven fabric with a book / inch and a weft density of 90 / inch, and scouring and dyeing by the usual method (Mitsubishi Kasei Co., Ltd. acid dye Diacid Fast Red 3BL 2% owf)
After that, padding (35% squeezing ratio) with a 5% aqueous dispersion of Asahi Guard 710 (Fluorine-based water repellent emulsion manufactured by Asahi Glass Co., Ltd.) was performed, and after drying, heat treatment was performed at 160 ° C. for 1 minute. Next, using a calendering machine having a mirror surface roll, calendering was performed under conditions of a temperature of 170 ° C., a pressure of 30 kg / cm ² , and a 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 1 and a solid content of 28% 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
It was dipped for 2 seconds to solidify the resin component, followed by washing in warm water at 50 ° C. for 10 minutes and then drying to form a wet coating resin film containing 9% by weight of inorganic fine powder.

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 adsorption amount 350 ml / 100 g of hydrophobic silicon dioxide fine powder)

Next, a polyurethane resin containing 16% by weight of aluminum oxide fine particles having the following formulation 2 was printed on the surface of the wet coating resin film described above using a flat screen (lattice pattern, porosity of 50%), and the temperature was 100 ° C. In 2
Printed area is about 50% and film thickness is 2 by drying for 1 minute
A 5 μm resin film was formed. The surface-treated aluminum oxide fine particles used here are those having an average particle size of 0.4 μm and a crystal type of α type (AKP-3).
0, manufactured by Sumitomo Chemical Co., Ltd.) (100 g) was added to 1 liter of a 0.3% aqueous solution of sodium stearate (fatty acid metal salt), stirred and dispersed, and then spray dried.

Formulation 2 Heimlen NPU-5 100 parts (Dainichi Seika Kogyo Co., Ltd., polyurethane resin) Surface-treated aluminum oxide fine particles 5 parts Isopropyl alcohol 5 parts Toluene 5 parts Resamine X-100 1 part (Dainichi Seika Kogyo Co., Ltd.) Made, isocyanate compound)

Here, a solvent type fluorine-based water repellent L is added to the above cloth.
A 5% mineral terpene solution of S-520 (manufactured by Asahi Glass Co., Ltd.) was padded (squeezing ratio: 40%) and dried, then 17
A finishing setting was performed at 0 ° C. for 30 seconds to obtain a heat insulating and heat retaining moisture-permeable waterproof cloth of the present invention. For comparison with the present invention, 11 comparative processed fabrics were obtained by the following Comparative Examples 1 to 11.

Comparative Example 1 A processed fabric for comparison was obtained by the same method as in this example except that Aerosil R-972 of the formulation 1 was omitted. Comparative Example 2 In Example 1, the amount of Aerosil R-972 of Formulation 1 was changed from 3 parts to 0.2 parts, and the inorganic fine powder was 0.7% by weight.
A processed fabric for comparison was obtained by the same method as in this example except that the resin film contained was formed. Comparative Example 3 The amount of Aerosil R-972 of Formulation 1 in Example 1 was changed from 3 parts to 20 parts, and the inorganic fine powder was 41% by weight.
A processed fabric for comparison was obtained by the same method as in this example except that the resin film contained was formed.

Comparative Example 4 A processed fabric for comparison was obtained in the same manner as in Example 1 except that the step of printing the resin containing fine particles of aluminum oxide having the formulation 2 was omitted. Comparative Example 5 A processed fabric for comparison was obtained in the same manner as in Example 1 except that the aluminum oxide fine particles of Formula 2 were omitted from Example 1. Comparative Example 6 A processed fabric for comparison was obtained in the same manner as in Example 1 except that the step of surface-treating the aluminum oxide fine particles of Formula 2 with sodium stearate (fatty acid metal salt) was omitted. .

Comparative Example 7 In Example 1, the aluminum oxide fine particles had an average particle size of
Aluminum oxide fine particles of 0.2 μm and crystal type γ type (A
KP-G, manufactured by Sumitomo Chemical Co., Ltd.) was used, and a processed fabric for comparison was obtained by the same method as in this example. Comparative Example 8 In this Example, except that the amount of aluminum oxide fine particles added in Formulation 2 was changed from 5 parts to 0.2 parts in Example 1 and a resin containing 0.8% by weight of aluminum oxide fine particles was printed. A processed fabric for comparison was obtained by the same method. Comparative Example 9 The same method as in Example 1 except that the amount of aluminum oxide fine particles of Formula 2 added in Example 1 was changed from 5 parts to 18 parts and a resin containing 41% by weight of aluminum oxide fine particles was printed. Thus, a processed fabric for comparison was obtained.

Comparative Example 10 A processed fabric for comparison was obtained in the same manner as in this example except that the aperture ratio of the lattice pattern of the flat screen used for printing in Example 1 was changed from 50% to 15%. It was Comparative Example 11 A processed fabric for comparison was obtained by the same method as in this example except that the porosity of the lattice pattern of the flat screen used in printing in Example 1 was changed from 50% to 85%.

In addition to the comparative example described above, aluminum oxide fine particles (AKP-30, manufactured by Sumitomo Chemical Co., Ltd.) having an average particle size of 0.4 μm and a crystal type of α type used in Example 1 were further used. A processed fabric for comparison by the same method as that of this example except that it is used in place of aluminum oxide fine particles having an average particle size of 6.3 μm and a crystal type of α type (AM-315, manufactured by Sumitomo Chemical Co., Ltd.). I tried to manufacture
The target cloth was not obtained because the screen was clogged.

The performance of the heat insulating and heat retaining moisture-permeable waterproof cloths of the present invention and Comparative Examples 1 to 11 obtained as described above was measured,
The results were evaluated and the results are shown in Table 1.

[0046]

[Table 1]

As is clear from Table 1, according to the method of the present invention, it is possible to obtain a fiber cloth having excellent moisture permeability and waterproof property, a small thermal conductivity and an excellent heat insulating and heat retaining property.

[0048]

EFFECTS OF THE INVENTION According to the present invention, without performing post-processing such as vapor deposition processing, it has good heat insulation and heat retention even in the shade, and also has excellent moisture permeability and waterproofness. Fabrics can be manufactured.

[Brief description of drawings]

FIG. 1 is a schematic side view of a main part of an apparatus for measuring the heat insulation and heat retention of a fiber cloth of the present invention.

[Explanation of symbols]

 1 Water Box 2 Sample (Processed Fabric) 3 B.T.Box 4 Heat Plate 5 Heat Consumption Detector

Claims (1)

[Claims] 1. An average particle size of 1 μm or less and an adsorption amount of N, N-dimethylformamide of 20 on a fiber cloth.
0-40 ml of inorganic fine powder of 0 ml / 100 g or more
It has a perforated resin film made of a synthetic polymer mainly composed of polyurethane resin, containing 5% by weight, and has an average particle size of 5 μm on the resin film.
A film-forming resin containing 1 to 40% by weight of aluminum oxide fine particles having a crystal type of α or less and a crystal form of α type and surface-treated with a fatty acid metal salt is printed in the range of 20 to 80%. A heat-insulating, heat-retaining, moisture-permeable and waterproof fabric characterized by: