JP2002069855A - Method for manufacturing moisture-permeable waterproof laminated fabric having excellent dewfall preventive property - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated fabric having excellent moisture permeability and waterproofness, and excellent in dewfall preventive property. SOLUTION: A synthetic polymer solution mainly composed of a polyurethane resin containing 3-30 mass% of hydrophobic silicon dioxide fine powder having an average particle size of <=0.1 μm and the absorption of N,N- dimethylformamide of >=300 ml/100 g, and 1-10 mass% of hydrophilic inorganic fine powder having the maximum particle size of <=10 μm is applied on a fiber fabric to produce film through a wet-type film making process, and subsequently a polyurethane-based adhesive layer is formed on the resulting resin film homogeneously over the non-entire surface, and the fiber fabric is laminated and adhered on a fiber fabric for lining. Thus, the moisture-permeable waterproof laminated fabric excellent in dewfall preventive property having hydraulic pressure resistance of >=150 Kpa and moisture permeability of >=4,000 g/m2.24 hr is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated fabric which is used for various kinds of clothing such as raincoats, outer garments, mountaineering garments and the like, and has excellent moisture permeability, waterproofness and dew condensation prevention.

[0002]

2. Description of the Related Art A moisture-permeable waterproof fabric having both moisture permeability and waterproofness has a function of discharging water vapor caused by sweating from the body out of clothes and a function of preventing rain from entering clothes. In order to provide these functions, high-density woven fabric in which yarns are woven at high density, or a polyurethane resin, a polyamino acid resin, a polyester resin, a polyamide resin, a polytetrafluoroethylene resin, etc. are coated or laminated on a fabric. What is well known. These are used for sports clothing, winter clothing, etc., and among them, they are often used in sports and outdoor clothing fields where the amount of sweat caused by exercise is relatively large, such as skiing, athletic,
It is an indispensable material in the field of mountaineering. Among such conventional moisture-permeable and waterproof fabrics, the high-density woven fabric type has a sufficient moisture-permeable performance, but the waterproof performance is at most about 10 kPa. Perforated ones are generally easy to obtain excellent moisture permeability, but waterproof performance is only about 20 to 30 kPa, while those with non-porous resin layers are easy to obtain excellent waterproof performance, Is little, or at most about 4000 g / m ² · 24 hrs.

In order to compensate for such a drawback, a perforated high moisture permeable resin layer is first formed on a fiber cloth, and a non-porous resin layer is formed thereon to provide excellent moisture permeability and waterproofness. Attempts have been made to obtain a performance. Although this method can provide excellent waterproof performance, the moisture permeability is at most 3,000 to 5,000.
g / m ² · 24 hrs. Therefore, the present inventors disclosed in Japanese Patent Application Laid-Open No. 6-280163 1% by mass 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. A method for producing a coated fabric for forming a polyurethane resin film containing the above is proposed. The moisture permeability is 7000 g / m ² · 24 hrs or more, and the waterproofness is 60 kPa.
The above moisture-permeable waterproof fabric was successfully obtained. However, even when the above-mentioned moisture-permeable and waterproof fabric is worn, if the environmental temperature is lowered during the wearing, water droplets adhere to the coating surface and dew condensation occurs, and the user feels sticky or cold when wearing the fabric, which is uncomfortable. there were.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and is a moisture-permeable waterproof laminated fabric which has both high waterproof performance and moisture-permeable performance and is excellent in preventing dew condensation. The purpose is to obtain.

[0005]

The present invention achieves the above object and has the following constitution. That is, the present invention relates to a method of producing a fiber fabric, which has an average particle size of 0.1 μm or less and an N, N-dimethylformamide adsorption amount of 3 μm.
Polyurethane resin-based synthetic polymer solution containing 3 to 30% by mass of hydrophobic silicon dioxide fine powder of 00 ml / 100 g or more and 1 to 10% by mass of hydrophilic inorganic powder having a maximum particle size of 10 μm or less. Is applied to form a polyurethane-based adhesive layer on the resin film, laminated and bonded to a lining fiber fabric, and has a water pressure resistance of 80 kpa or more and a moisture permeability of 6000 g / m ² · 24 hrs or more. And a method for producing a moisture-permeable and waterproof laminated fabric excellent in dew condensation prevention characteristics.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. Examples of the fiber cloth used in the present invention include polyamide-based synthetic fibers such as nylon 6 and nylon 66, polyester-based synthetic fibers such as polyethylene terephthalate, polyacrylonitrile-based synthetic fibers, polyvinyl alcohol-based synthetic fibers, and triacetate. Woven fabrics, knitted fabrics, nonwoven fabrics, etc. comprising semi-synthetic fibers or mixed fibers of nylon 6 / cotton, polyethylene terephthalate / cotton and the like.

In the present invention, the above-mentioned fiber cloth which has been subjected to a water repellent treatment may be used. This is one means for preventing the penetration of the resin solution into the inside of the fabric during the production of the moisture-permeable waterproof cloth. As the water repellent in this case, a known substance such as a paraffin-based water repellent, a polysiloxane-based water repellent, or a fluorine-based water repellent may be used. A known method such as a spray method may be used. In the case where particularly good water repellency is required, a fluorine-based water repellent is used. For example, Asahi Guard 730 (manufactured by Asahi Glass Co., Ltd., a fluorine-based water-repellent emulsion) is used. After padding with a 5% aqueous dispersion (squeezing ratio 35%),
The heat treatment may be performed by a heat treatment for one minute.

In the present invention, a synthetic polymer solution mainly composed of a polyurethane resin is applied to the above-mentioned fiber cloth, and a wet film is formed to form a perforated resin film. The synthetic polymer solution mainly composed of a polyurethane resin used in the present invention means a polymer solution mainly containing a polar organic solvent such as N, N-dimethylformamide containing 50 to 100% by mass of a polyurethane component. As coalescence, for example, polyacrylic acid,
Polyvinyl chloride, polystyrene, polybutadiene, polyamino acid, etc., or a copolymer thereof may be contained in a range of less than 50% by mass, and of course, a compound modified with fluorine, silicon, or the like may be used.

The polyurethane resin itself is a copolymer obtained by reacting a polyisocyanate and a polyol, and uses an aromatic diisocyanate, an aliphatic diisocyanate or an alicyclic diisocyanate alone or a mixture thereof as an isocyanate component. Tolylene 2,4-diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,6-hexane diisocyanate, 1,4-cyclohexane diisocyanate, or the like may be used as a main component, and if necessary, trifunctional or higher functional isocyanate may be used.

As the polyol component, polyether polyol or polyester polyol is used. As the polyether polyol, for example, polyethylene glycol, polypropylene glycol, polytetramethylene glycol or the like is used. As the polyester polyol, for example, ethylene glycol is used. A reaction product of a diol such as propylene glycol and a dibasic acid such as adipic acid or sebacic acid or a ring-opening polymer such as caprolactone is used.

In the present invention, the polyurethane resin has an average particle size of 0.1 μm or less and an adsorbed amount of N, N-dimethylformamide of 300 ml / 100.
g of hydrophobic silicon dioxide fine powder in an amount of 3 to 30% by mass, and 1 to 10% by mass of a hydrophilic inorganic fine powder having a maximum particle size of 10 μm or less.

As the hydrophobic silicon dioxide fine powder used in the present invention, powders finely divided by a usual wet pulverization method or a ball mill pulverization method, a gas phase oxidation method of a metal halide, a combustion hydrolysis method, an electric arc method, etc. The number of silanol groups present on the surface of the fine powder obtained by the dry method described above may be modified to be hydrophobic by reacting with an organic silicon halide such as dimethyldichlorosilane or an alcohol to reduce the number. it can. Fine powder obtained by these methods,
Generally, it has a particle size of 0.05 μm or less, is substantially nonporous, and has N, N-dimethylformamide adsorption performance.

The amount of N, N-dimethylformamide adsorbed here means that 5 g of the fine powder is placed on a flat glass plate,
Each time one drop of N, N-dimethylformamide was added, the kneading operation using a stainless steel spatula was repeated, and the N, N-dimethyl which was required immediately before it became soft immediately with one drop of N, N-dimethylformamide was used. Means the volume of formamide (unit: milliliter)
SK-5101 is obtained by using N, N-dimethylformamide instead of oil in the boiled linseed.

It is necessary to use the hydrophobic silicon dioxide fine powder in an amount of 3 to 30% by mass based on the above-mentioned synthetic polymer mainly composed of a polyurethane resin. The number of holes in the portion is reduced, and it becomes difficult to obtain high moisture permeability.
Use of more than 0% by mass is not preferred because the improvement in moisture permeability is small and the resin film becomes brittle.

The inorganic fine powder having hydrophilicity used in the present invention can be prepared by a known gas phase method, liquid phase method, autoclave method, mechanochemical method or the like, using aluminum oxide, titanium oxide, silica gel, zinc oxide, magnesia, etc. The surface of the inorganic substance is treated with alcohol, an organic acid, an organic amine, an organic silyl compound, etc., and the surface of the fine powder is made hydrophilic,
Although not particularly limited in the present invention, it is preferable to use hydrophilic silicon dioxide fine powder.

The silicon dioxide fine powder having hydrophilicity used herein includes porous hydrated silica obtained by a wet method such as a method of neutralizing sodium silicate with an acid or a method of decomposing acidic clay as a raw material with sulfuric acid. And fine powder mainly composed of hydrated silica or fine powder having a hydrophilic group such as a silanol group obtained by the dry method.

The silicon dioxide fine powder having hydrophilicity may be a fine powder containing 50% or more of a silicon dioxide component. For example, it may contain calcium oxide, magnesium oxide, aluminum oxide and the like as other components. Of course,
It does not interfere with other inorganic substances, pigments, fillers and the like.

The maximum particle size of the inorganic fine powder having hydrophilicity is as follows:
It is necessary to be 10 μm or less, and if it exceeds 10 μm, the waterproof performance of the obtained coated fabric is adversely affected, which is not preferable. The amount of the fine powder to be added must be 1 to 10% by mass with respect to the above-mentioned synthetic polymer mainly composed of a polyurethane resin. %
It is not preferable to use a larger amount because the dew condensation preventing property is hardly improved, the coating resin becomes unstable, and the working efficiency is deteriorated.

In the present invention, a synthetic polymer solution mainly composed of a polyurethane resin containing the above-described hydrophobic silicon dioxide fine powder and hydrophilic fine inorganic powder is applied to a fiber cloth to perform wet film formation, and A resin film is formed. As a method of applying to the fiber cloth, a usual coating method, for example, a knife coater, a comma coater, a reverse coater or the like may be used for appropriate coating.
In order to obtain a water pressure of more than KPa, the resin dry film mass must be 1
The coating amount may be adjusted so as to be 0 to 50 g / m ² , preferably 15 to 40 g / m ² .

Further, in order to improve the peeling resistance between the resin layer and the fiber cloth, a compound having a high affinity for the resin and the fiber cloth may be used in combination in a synthetic polymer solution mainly composed of a polyurethane resin. As the compound, an isocyanate compound can be suitably used, and as the isocyanate compound, a compound containing active hydrogen, such as tolylene 2,4-diisocyanate, diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, or 3 moles of these diisocyanates and active hydrogen ( For example, trimethylolpropane, glycerin, etc.)
Triisocyanates obtained by addition reaction with 1 mol can be used.

The above isocyanates may be in a form in which an isocyanate group is liberated, or in a form in which an addition block is formed with phenol, lactam, methyl ketone or the like and dissociated by heat treatment. It may be properly used depending on workability, use, and the like.
The amount used when using the isocyanate compound,
It is desirable to use 0.1 to 10% by mass of the synthetic polymer mixed solution mainly composed of the polyurethane resin.

In order to further improve the waterproof performance, the coated fabric may be subjected to a water-repellent treatment after the wet coating. The water-repellent treatment may be performed by a known water-repellent treatment method which is generally performed as described above.

Further, in the present invention, a synthetic resin solution mainly composed of a polyurethane resin containing a hydrophobic silicon dioxide fine powder and a hydrophilic inorganic fine powder is wet-formed to form a perforated resin film. A synthetic polymer solution mainly composed of a polyurethane resin containing 0 to 10% by mass of an inorganic fine powder having a hydrophilic property with a maximum particle size of 10 μm or less is applied, and a dry film is formed to form a non-porous resin on the perforated resin film. Form a film.

As the synthetic polymer mainly composed of a polyurethane resin used here, the above-mentioned polyurethane resin may be used, and the above-mentioned polymer solution mainly containing a polar organic solvent such as N, N-dimethylformamide may be used. It is preferable to use a polymer solution mainly composed of a volatile solvent such as toluene, methyl ethyl ketone, and ethyl acetate in view of processing costs and the like.

The inorganic fine powder having hydrophilicity used herein may be the same as described above, and the amount of addition may be determined in view of the thickness of the obtained polyurethane resin film, dew condensation preventing performance, and the like.
The amount may be appropriately determined within the range of 10% by mass or less. However, if it is used in an amount of more than 10% by mass, the dew condensation preventing property is poorly improved, and the washing durability is lowered and the texture is hardened.

In the present invention, a so-called dry film forming is carried out by applying the above-mentioned coating apparatus with a synthetic polymer solution mainly composed of a polyurethane resin containing the above-mentioned inorganic fine powder having hydrophilicity, and drying. A non-porous resin film is formed on the porous resin film. The coating amount of the polyurethane resin containing the inorganic fine powder having hydrophilicity may be appropriately determined so as to have a water pressure of 150 KPa or more and a moisture permeability of 4000 g / m ² .24 hrs or more. 0.5-15
g / m ^2, preferably it should be adjusted coating amount such that 1 to 10 g / m ^2.

Next, in the present invention, a polyurethane-based adhesive layer is formed on the resin film and laminated and adhered to a lining fiber cloth. The fiber fabric for the lining used in the present invention is the same as the above-mentioned fiber fabric for the outer material, and has no problem.
In view of the cost, texture, seam tape properties of sewn products, etc., a polyamide synthetic fiber having a fineness of 15 to 50 dtex, a water-absorbing polyester synthetic fiber or a polyamide synthetic fiber / cotton, a polyester synthetic fiber / cotton mixed fiber Fabrics, knits, and non-woven fabrics are preferably used.

The polyurethane adhesive used in the present invention is a resin having a urethane bond obtained from an isocyanate group and a hydroxyl group in the same molecule as described above, or a resin derived from the aforementioned isocyanate compound. In the invention, a low molecular weight polyol having a molecular weight of 1000 or less, for example, ethylene glycol, diethylene glycol,
A method of combining a polyol component such as 1,4-butanediol and 1,6-hexanediol with an isocyanate compound, or a method of combining a polyol component or an isocyanate compound with a polymer polyol such as the above-mentioned polyether diol or polyester diol and trilen 2,4- A copolymer obtained by a method of combining with a urethane prepolymer modified at both terminal isocyanate groups or at both terminal hydroxyl groups reacted with diisocyanate, etc., is preferable since it is excellent in tackiness of resin, adhesion to fiber cloth, and the like. Used for

When the terminal group of the polyurethane adhesive is an isocyanate group, it may be used in combination with a compound having active hydrogen such as an epoxy resin or neoprene (registered trademark).
When the terminal group of the obtained adhesive is a hydroxyl group, a tin catalyst such as tin octylate or dibutyltin dioctoate or an amine catalyst such as triethylamine or triethylenediamine may be used in combination with the above-mentioned isocyanate compound and a curing accelerator. I just need.

In order to further improve the adhesive strength and durability, when the backing fiber fabric is a polyamide-based synthetic fiber, for example, Grilltec 1P2 (Emser Wer
ke) and PLATAMID H104 (Elf Atochem Japan), and a polyamide hot-melt adhesive may be used in combination. When the lining fiber fabric is a polyester synthetic fiber, for example, PLATHER
A polyester hot-melt adhesive such as MM1991PA may be used in combination.

In the present invention, a polyurethane-based adhesive is uniformly applied over the entire surface of the above-mentioned resin film mainly composed of a polyurethane resin. The non-entire surface as used herein means that the ratio of the area occupied by the adhesive to the entire area of the application surface is 20 to 60%, preferably 3 to 60%.
When the occupied area ratio is less than 20%, the peeling resistance between the adhesive layer and the backing is poor, and when the occupied area ratio is 60% or more, the moisture permeability deteriorates, which is not preferable.

When the above-mentioned adhesive is of a solvent type or an aqueous type, a known gravure coater, a rotary screen, a flat screen or the like is used.
In the case of a hot-melt type, an applicator or the like may be used to uniformly apply a desired shape such as a dot, a line, a checkered pattern, and a turtle pattern.

After applying the adhesive, the adhesive is dried at a temperature of 50 to 100 ° C. for 0.5 to 5 minutes, and then laminated and adhered to a lining fiber fabric by a known method such as ordinary press bonding or thermocompression. Aging is performed for 3 days or more to sufficiently advance the curing of the adhesive.

[0034]

When a synthetic polymer mainly composed of a polyurethane resin in which a hydrophobic silicon dioxide fine powder and a hydrophilic inorganic fine powder are uniformly dispersed is applied on a fiber cloth and wet coagulation is performed,
The inventor has guessed why it is possible to have excellent performance that satisfies all of the moisture permeability performance, the waterproof performance, and the dew condensation prevention performance as follows. In wet coagulation, water, which is a coagulating liquid, and N, N-dimethylformamide, which is a resin solvent, are mixed, and coagulation of the resin starts when the solvent is rapidly released from the resin liquid. When the hydrophobic silicon dioxide fine powder is uniformly dispersed in the resin solution, the surface of the fine powder is more N, N-
The concentration of dimethylformamide is high, in other words, the concentration of N, N-dimethylformamide of a synthetic polymer mainly composed of a polyurethane resin is low.

For this reason, in the wet coagulation process, water as coagulation liquid is first replaced by N, N-dimethylformamide on the surface of the fine powder, coagulation starts quickly around the coagulation liquid, and then the resin coagulates. As the number of cavities in the unique honeycomb skin core structure increases, a myriad of micropores of 1 μm or less appear around the uniformly dispersed fine powder, forming a porous resin film. It is presumed that the waterproof performance is increased while having the wet performance.

At the same time, the hydrophilic silicon dioxide fine powder is also present in the entire layer of the resin film in the porous form as described above, and water vapor is not released only from the film surface.
Since water vapor is released from the entire resin film layer, it has excellent dew condensation preventing properties.

When a non-porous resin film is further formed on the porous resin film, the waterproofness is further improved due to the non-porosity of the resin film, and the non-porous resin film has hydrophilicity. Since the inorganic fine powder is uniformly dispersed, it is presumed that the inorganic fine powder has good dew condensation preventing properties.

Furthermore, since the adhesive is uniformly applied to the non-perforated surface on the perforated or non-perforated resin, and the fiber fabric for the backing is laminated and adhered, it is excellent in moisture permeability and less stuffy when worn.

[0039]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. Measurement and evaluation of the performance of the fabric in the examples were performed by the following methods. Water pressure JIS L-1092 (high water pressure method) Moisture permeability JIS L-1099 (A-1 method) Peel strength JIS L-1089 The longitudinal peel strength between the coating resin surface and the lining was measured. Anti-condensing properties A stainless steel cup (inner diameter and height 10 cm, thickness 1 mm) containing hot water of 40 ° C. in 500 ml was attached with a rubber band with the coated surface facing the direction of hot water, and 10 ° C. × 60% The sample was placed in an RH environment, and the state of dew condensation after standing for 15 minutes was visually and tactilely evaluated. ：: No dew / wet, △: Partially wet, ×:
Overall moist

Example 1 A plain weave having a warp density of 100 yarns / 2.5 cm and a weft yarn density of 75 yarns / 2.5 cm was woven using cationic dyeable polyester multifilament 167 dtex / 96 filaments for both the warp and the weft. Scouring and dyeing by the usual method (Nippon Kayaku Co., Ltd., Kayacryl Blue GRL
After performing 2% omf), 6% aqueous dispersion of Asahigard LS-317 (manufactured by Asahi Glass Co., Ltd.), an emulsion type fluorine-based water repellent, is padded (squeezing ratio: 40%), dried, and dried at 160 ° C. Heat treatment was performed for one minute. Next, using a calendering machine having a mirror surface roll,
Calendering was performed at a temperature of 300 ° C., a pressure of 300 KPa, and a speed of 30 m / min to obtain a polyester base fabric for coating.

Next, a polyurethane resin solution having a composition shown in the following prescription 1 and having a solid content of 25% and a viscosity of 11,000 mPa · s (25 ° C.) was applied to the calender surface of the polyester base fabric using a knife over roll coater. Immediately after application at a coating amount of 100 g / m ² , the resin was coagulated by dipping in water at 15 ° C. for 40 seconds, followed by washing in warm water at 50 ° C. for 10 minutes, followed by drying to obtain a polyurethane resin. Was formed. The porous resin film contained 14% by mass of hydrophobic silicon dioxide fine powder and 4% by mass of hydrophilic silicon dioxide type fine powder.

Formulation 1 Lac Skin 1740-29B 100 parts (ester type polyurethane resin, manufactured by Seiko Chemical Co., Ltd.) 1 part of Rezamin X (isocyanate compound, manufactured by Dainichi Seika Industries, Ltd.) N, N-dimethylformamide 35 parts AEROSIL R -972 5 parts (Nippon Aerosil Co., Ltd., hydrophobic silicon dioxide fine powder with an average particle size of about 0.016 μm and N, N-dimethylformamide adsorption amount of 350 ml / 100 g) Nipsil E200 1.5 parts Manufactured by Co., Ltd., water-containing hydrophilic silicon dioxide fine powder with a particle size of 9 μm or less (average particle size 2.5 μm).

Further, the polyester fabric having the above-mentioned perforated resin film was padded with a 6% aqueous dispersion of Asahiguard LS-317 (manufactured by Asahi Glass Co., Ltd., fluorine-based water repellent) (squeezing ratio: 30%). After drying, heat treatment was performed at 170 ° C. for 40 seconds.

On the other hand, as the lining fabric, nylon filament 22 dtex / 7 filament was used.
A 28 gauge tricot ground was knitted and scoured by a usual method.

On the resin film of the polyester fabric having the water-repellent treated porous resin film, 25 mesh, depth 250
μm, an adhesive occupation area ratio of 40%, and a gravure roll having a circular dot shape (dot width 0.7 mm, dot interval 0.35 mm) having a solid content of 39 with the composition shown in the following prescription 2
% Of a polyurethane adhesive, dried at 130 ° C. for 2 minutes, laminated with the above-mentioned lining fabric at a pressure of 30 kPa, and then aged at 50 ° C. for 4 days.
A moisture-permeable waterproof laminated fabric of the present invention (referred to as Example 1) was obtained.

Formulation 2 100 parts of UD-108 (polyurethane-based adhesive manufactured by Seiko Kasei Co., Ltd.) 3 parts of Platamide H-103 (polyamide-based hot melt adhesive manufactured by Elf Atochem Japan Co., Ltd.) 5 parts of coronate HL ( Nippon Polyurethane Industry Co., Ltd., isocyanate compound) methyl ethyl ketone 15 parts

For comparison with the present invention, Formulation 1 of Example 1 was used.
AEROSIL R-972 and Nipsil at
A moisture-permeable and waterproof laminated fabric for comparison (referred to as Comparative Example 1) was obtained in exactly the same manner as in Example 1 except for E200.

For comparison with the present invention, Formulation 1 of Example 1 was used.
In Comparative Example 2, a moisture-permeable waterproof laminated fabric for comparison (hereinafter referred to as Comparative Example 2) was obtained in exactly the same manner as in Example 1 except that AEROSIL R-972 was excluded.

Further, for comparison with the present invention, except that Nipsil E200 was omitted in Formulation 1 of Example 1,
In the same manner as in Example 1, a comparative moisture-permeable waterproof laminated fabric (Comparative Example 3) was obtained. The performances of the present invention and the comparative fabric were measured, and the results are shown in Table 1.

[0050]

[Table 1]

As is clear from Table 1, it is understood that the moisture-permeable and waterproof laminated fabric of the present invention has excellent waterproof, moisture-permeable and dew condensation preventing properties.

Example 2 Using a polyester fabric having a water-repellent treated porous resin film of Example 1, a solid content concentration of 25%, 2500 mPa · s
(25 ° C.) using a floating knife coater so that the coating amount per m ² is 8 g, 16 g, 26 g, and 36 g, respectively, and then dried at 100 ° C. for 3 minutes. Forming a non-porous resin membrane,
The amount of the applied dry resin per 1 m ² is 2.0 g and 4.0 g, respectively.
g, 6.5 g and 9.0 g of a non-porous resin film were formed. (Note that this non-porous resin film contained 5% by mass of hydrophilic silicon dioxide-based fine powder.) Then, the same nylon knitted fabric for backing as in Example 1 was used, and exactly the same method as in Example 1 was used. To obtain a moisture-permeable and waterproof laminated fabric of the present invention. (Example 2)

Formulation 3 100 parts of LUXSKIN U2514-1 (ether-type polyurethane resin, manufactured by Seiko Chemical Co., Ltd.) 10 parts of isopropyl alcohol 15 parts of toluene 1.5 parts of Nipsil E200 1.5 parts of Nippon Silica Industry Co., Ltd. (Average particle size 2.5 μm) water-containing hydrophilic silicon dioxide fine powder.

For comparison with the present invention, a moisture-permeable waterproof for comparison was produced in exactly the same manner as in Example 2 except that the polyester fabric having the water-repellent treated porous resin film of Comparative Example 1 was used. A laminated woven fabric (referred to as Comparative Example 4) was obtained. The performances of the present invention and the moisture-permeable waterproof laminated fabric for comparison were measured, and the results are shown in Table 2 together.

[0055]

[Table 2]

As is evident from Table 2, it is understood that the moisture-permeable and waterproof laminated fabric of the present invention has excellent waterproofing property, moisture-permeable property and dew condensation preventing property.

Example 3 Nylon multifilament 78 dtex / 68 filament was used for both the warp and the weft, and the warp density was 12
After weaving a plain weave of 0 threads / 2.5 cm and a weft density of 95 threads / 2.5 cm, scouring and dyeing (Kayaanol Navy Blue R 3% omf, manufactured by Nippon Kayaku Co., Ltd.) by a usual method, and then emulsifying A 7% aqueous dispersion of Asahigard LS-317 (manufactured by Asahi Glass Co., Ltd.), a type of fluorine-based water repellent, was padded (squeezing ratio: 35%), dried, and then heat-treated at 160 ° C. for 1 minute. Next, using a calendering machine having a mirror roll, the temperature was 170 ° C. and the pressure was 300 KP.
a, Calendering was performed under the conditions of a speed of 20 m / min to obtain a nylon base fabric for coating.

Next, a polyurethane resin solution having a composition shown in the following formulation 4 and having a solid content of 25% and a viscosity of 11000 mPa · s (25 ° C.) was applied to the calender surface of the above nylon base cloth using a knife over roll coater. Application amount 7
Immediately after application at 0 g / m ² , the resin was solidified by dipping in water at 15 ° C. for 40 seconds, followed by washing in warm water at 50 ° C. for 10 minutes and drying to form a porous resin film. did.
The porous resin film contained 14% by mass of hydrophobic silicon dioxide fine powder and 4% by mass of hydrophilic silicon dioxide type fine powder. Next, the same nylon knitted fabric for lining as in Example 1 was laminated and bonded in exactly the same manner as in Example 1 to obtain a moisture-permeable and waterproof laminated fabric of the present invention. (Example 3
And )

Formulation 4 Lac Skin 1740-29B 100 parts (Seiko Chemical Co., Ltd., ester type polyurethane resin) Resamine X 1 part (Dainichi Seika Kogyo Co., Ltd., isocyanate compound) N, N-dimethylformamide 35 parts AEROSIL R -972 5 parts (manufactured by Nippon Aerosil Co., Ltd., hydrophobic silicon dioxide fine powder having an average particle size of about 0.016 μm and N, N-dimethylformamide adsorption amount of 350 ml / 100 g) Nipsil VN3 1.5 parts Manufactured by Co., Ltd., water-containing hydrophilic silicon dioxide fine powder with an average particle diameter of 0.016 μm.

For comparison with the present invention, Formulation 3 of Example 3
AEROSIL R-972 of 0.7 parts (the content of the hydrophobic silicon dioxide fine powder is 2% by mass) except for the moisture-permeable waterproof laminated fabric for comparison by the same method as in Example 3. Comparative Example 5) was obtained.

For comparison with the present invention, formulation 4 of Example 3
AEROSIL R-972 of 15 parts (the content of the hydrophobic silicon dioxide fine powder is 33% by mass), and a moisture-permeable waterproof laminated fabric for comparison (Comparative Example 6).

For comparison with the present invention, formulation 4 of Example 3
Except that Nipsil VN3 is 0.3 parts (the content of hydrophilic silicon dioxide-based fine powder is 0.7% by mass), a moisture-permeable waterproof laminated fabric for comparison is produced in exactly the same manner as in Example 3. (Comparative Example 7) was obtained.

For comparison with the present invention, formulation 4 of Example 3
Except that Nipsil VN3 was 6 parts (the content of the hydrophilic silicon dioxide-based fine powder was 12% by mass), a moisture-permeable waterproof laminated fabric for comparison (Comparative Example 8) was produced in exactly the same manner as in Example 3. ). The performances of the present invention and the moisture-permeable waterproof laminated fabric for comparison were measured, and the results are shown in Table 3.

[0064]

[Table 3]

As is clear from Table 3, it is understood that the moisture-permeable waterproof laminated fabric of the present invention has excellent waterproof performance, moisture-permeable performance and dew-prevention performance.

Example 4 Using the nylon base fabric for coating of Example 3, the calender surface of the base fabric was applied with the composition shown in Formula 5 below, having a solid content concentration of 26% and a viscosity of 15,000 mPa · s (25 ° C.). The polyurethane resin solution was applied using a knife over roll coater so that the coating amount became 10 g / m ^2, and immediately immersed in water at 15 ° C. for 40 seconds to solidify the resin component. Wash in warm water for 10 minutes,
After drying, a porous resin film was formed. The porous resin film contained 6% by mass of hydrophobic silicon dioxide fine powder and 6% by mass of hydrophilic silicon dioxide type fine powder.

Formulation 5 Heimulene CU4550 100 parts (Dainichi Seika Kogyo Co., Ltd., ester type polyurethane resin) Resamine X 1 part (Dainichi Seika Kogyo Co., Ltd., isocyanate compound) N, N-dimethylformamide 30 parts AEROSIL R- 974 2 parts (manufactured by Nippon Aerosil Co., Ltd., hydrophobic silicon dioxide fine powder having an average particle diameter of 0.012 μm, N, N-dimethylformamide adsorption amount 350 ml / 100 g) AEROSIL 200 2 parts (manufactured by Nippon Aerosil Co., Ltd., average grain Hydrophilic silicon dioxide fine powder with a diameter of about 0.016 µm and silanol groups on the particle surface)

Next, on the porous resin layer, a solid content concentration of 15% and a viscosity of 1500 mPa.
s (25 ° C.) using a floating knife coater to apply the applied amount of 100 g / m ^2, and then drying at 100 ° C. for 3 minutes (the applied amount of the dried resin is 1.5 g). / m ² ) A non-porous resin film was formed. Then, by performing the lamination adhesion by exactly the same method as in Example 1,
A moisture-permeable and waterproof laminated fabric of the present invention (referred to as Example 4) was obtained.

Formula 6 Heimulene Y237 100 parts (Dainichi Seika Kogyo Co., Ltd., ether type polyurethane resin) Methyl ethyl ketone 62 parts

For comparison with the present invention, AEROSIL 200 of Formulation 5 in Example 4 was replaced with Nipsil E15
Other than replacing with 0K (Nippon Silica Industry Co., Ltd., water-containing hydrophilic silicon dioxide fine powder having a maximum particle size of 12 μm),
In the same manner as in Example 4, a comparative moisture-permeable and waterproof laminated fabric (Comparative Example 9) was obtained.

Example 5 Except that 2 parts of AEROSIL 200 was added to the above-mentioned formulation 6 (referred to as formulation 7), the moisture-permeable waterproof laminated fabric of the present invention (the same as that of example 5) was used. Yes.)
I got

For comparison with the present invention, both AEROSIL 200 of Formulation 5 and Formulation 7 in the Examples were Nip
sil E150K (manufactured by Nippon Silica Kogyo Co., Ltd., water-containing hydrophilic silicon dioxide fine powder having a maximum particle size of 12 μm)
A moisture-permeable and waterproof laminated fabric for comparison (referred to as Comparative Example 10) was obtained in exactly the same manner as in this example, except for replacing this example. Measure the performance of the present invention and the moisture-permeable waterproof laminated fabric for comparison,
The results are shown in Table 4.

[0073]

[Table 4]

As is clear from Table 4, the moisture-permeable and waterproof laminated fabric of the present invention has excellent waterproof, moisture-permeable and dew-condensing properties.

[0075]

According to the present invention, it is possible to have an unprecedentedly high moisture permeability and dew condensation preventing property while having a high degree of waterproofness. A moisture-permeable and waterproof laminated fabric excellent in dew condensation prevention properties can be obtained.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) D06M 11/12 F-term (Reference) 4F055 AA27 BA11 EA04 FA15 GA01 GA32 4F100 AA01B AA01D AA20B AA20D AH03B AK42 AK48 AK51B AK51G BA04 BA07 BA10A BA10C DE01B DE01D DG04 DG11A DG11C DG12 DG13 EC18C EH46B EJ40 GB72 GB90 JB05B JB05D JB06B JD04 JD05 JD14B JL07 JM01 YY00B YY00D 4L031 AA18 AB03 DA02 BA03 A03 DA02

Claims (3)

[Claims] 1. A fiber cloth having an average particle size of 0.1 μm or less and an N, N-dimethylformamide adsorption amount of 30 μm or less.
Polyurethane resin-based synthetic polymer solution containing 3 to 30% by mass of a hydrophobic silicon dioxide fine powder of 0 ml / 100 g or more and 1 to 10% by mass of a hydrophilic inorganic fine powder having a maximum particle size of 10 μm or less. Is applied to form a polyurethane-based adhesive layer on the resin film, laminated and bonded to a lining fiber fabric, and has a water pressure resistance of 80 kpa or more and a moisture permeability of 6000 g / m ² · 24 hrs or more. A method for producing a moisture-permeable and waterproof laminated fabric having excellent dew condensation prevention properties. 2. The fiber fabric according to claim 1, wherein the average particle size is 0.1 μm or less and the amount of N, N-dimethylformamide adsorbed is 30%.
Polyurethane resin-based synthetic polymer solution containing 3 to 30% by mass of a hydrophobic silicon dioxide fine powder of 0 ml / 100 g or more and 1 to 10% by mass of a hydrophilic inorganic fine powder having a maximum particle size of 10 μm or less. Is applied to form a wet film, and thereafter, a substantially non-porous synthetic polymer mainly composed of a polyurethane resin containing 0 to 10% by mass of a hydrophilic inorganic fine powder having a maximum particle size of 10 μm or less. After applying a resin and performing dry film formation, a polyurethane-based adhesive layer is formed on the resin film, and laminated and adhered to a lining fiber cloth, with a water pressure of 150 kpa or more and 4000 g / m ² · 24 hours.
A method for producing a moisture-permeable and waterproof laminated fabric excellent in dew condensation prevention properties, having a moisture permeability of s or more. 3. The method according to claim 1, wherein the inorganic fine powder having hydrophilicity is a silicon dioxide-based fine powder.