KR20160118217A - Waterproof fabric and textile product employing same - Google Patents

Abstract

Provided is a waterproof fabric comprising a resin film capable of suppressing hardening of tactile feeling and suppressing deterioration of waterproofing property even under an extremely low temperature environment of -40 占 폚 or less. Wherein a urethane resin film having a glass transition point of less than -30 캜 is laminated on at least one side of a urethane resin film, and the urethane resin film is mainly composed of an ether-based urethane resin.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waterproof fabric,

The present invention relates to a waterproof fabric. And more particularly to a waterproof fabric that can be used in a low temperature environment.

Waterproof fabrics are used for a variety of things as materials to prevent flooding of water such as tents, shoes, etc., including clothing such as windbreaker and windbreaker.

The waterproof fabric has a waterproof resin film laminated on one side or both sides of the textile fabric and is not only waterproof but also permeable to the moisture in the clothes so as to prevent perspiration in the clothes and water defects, (Patent Document 1 and Patent Document 2)

Such a waterproof fabric is used under various environments, and may be used in an environment of about -15 DEG C to 5 DEG C in winter sports such as skiwear and in an environment of about 30 DEG C to 50 DEG C in midsummer clothes. Also, it can be used in an environment of about -40 ° C in the freezer, the south pole, the arctic pole, and the mountain with high altitude.

Among these various environments, particularly when used under a low-temperature environment, there is concern that the waterproof fabric is hardened (cured).

As a waterproof garment used in a low-temperature environment, it is known that a porous polytetrafluoroethylene membrane having moisture permeability and waterproofing property toward the body of the air cushioning material is provided inside thereof. (Patent Document 3)

However, the curing of the waterproof fabric and the deterioration of the waterproof property in a low temperature environment are not examined, and the technique relates to a backing material and a cotton batting.

Japanese Patent Application Laid-Open No. 55-80583 Japanese Patent Laid-Open No. 11-124774 Japanese Unexamined Patent Application Publication No. 8-302506

In the case of a waterproof fabric having a resin film, the resin itself is hardened under a low temperature environment of about -40 DEG C, but the waterproof property of the waterproof fabric is also lowered. This is because the resin film of the waterproof fabric used in clothes or the like loses its flexibility in a low temperature environment and is cured, the resin film is damaged by movement of the wearer wearing the clothes, water which is attached to the waterproof fabric freezes, It is presumed that if the fabric is cured and, in this state, it is worn as clothes or the like, the generated ice is split, and the resin film is damaged at the corners thereof and the waterproof property is lowered.

In addition, the waterproof fabric is used as the outer surface of a textile product such as a garment, and having a fiber fabric on the inner side (on the body side) of the textile product is unlikely to be influenced by the low temperature, It has been considered that there is no problem such as hardening of the touch even under the environment, but there is a fear that the touch may be hardened under a low temperature environment of about -40 deg.

Accordingly, the present invention provides a waterproof fabric capable of suppressing hardening of the tactile sensation of the waterproof fabric and suppressing deterioration of the waterproof property even in an extremely low temperature environment of -40 DEG C or less in a waterproof fabric containing a resin film .

The inventors of the present invention have made extensive studies in order to solve the above problems and have reached the present invention.

That is, the present invention has the following constitutions (1) to (7).

(1) A waterproof fabric comprising a urethane resin film having a glass transition point of less than -30 캜,

Wherein the urethane resin film is mainly composed of an ether-based urethane resin.

(2) The waterproof fabric according to (1), wherein the waterproof fabric is used as a surface of a textile product.

(3) The waterproof fabric as described in (1) or (2) above, wherein the amount of picked up water of the fiber fabric used for the inner side of the fiber product is 100 g / m 2 or less.

(4) The waterproof fabric according to any one of (1) to (3), wherein the urethane resin film is a non-transparent film.

(5) The waterproof fabric according to any one of (1) to (4), wherein the urethane resin film is bonded to the fiber fabric through an adhesive.

(6) The waterproof fabric according to (5), wherein the adhesive is an ether-based urethane resin.

(7) The textile fabric according to (5) or (6), wherein the urethane resin used for the adhesive has a glass transition point of less than -30 占 폚.

(8) A fiber product using the waterproof fabric according to any one of (1) to (7) as a surface layer.

The waterproof fabric of the present invention can provide a waterproof fabric capable of suppressing hardening of the tactile sensation of the waterproof fabric and maintaining the waterproof property even under a low temperature environment.

When the waterproof fabric of the present invention is used for a textile product such as a windbreaker, a coat, a jacket, a jacket, anorak, a ski wear, a snowboard wear, a ladies' work clothes, a tent, a sleeping bag, It is possible to suppress the hardening of the tactile feeling of the fiber product and suppress the deterioration of the waterproof property even under the environment.

The waterproof fabric of the present invention is a waterproof fabric formed by laminating a textile fabric on at least one surface of a urethane resin film having a glass transition point (Tg) lower than -30 캜, and the urethane resin film is mainly composed of an ether-based urethane resin.

Further, it is preferable that the waterproof fabric is used as a surface of a textile product such as a garment. The waterproof fabric of the present invention is used as a surface of a textile product such as a garment, and therefore, unlike a conventionally known waterproof fabric, the waterproof fabric is excellent in water resistance even under a low temperature environment of -20 캜, -30 캜, -40 캜, The effect of suppressing the deterioration of the waterproof property while suppressing the hardening of the tactile sensation of the waterproof fabric can be exhibited.

Particularly, in the present invention, the waterproof fabric is used as a surface of a textile product such as a garment, and has a fiber fabric on the inner side (on the body side) of the textile product. Especially, the curing of the tactile feeling is suppressed, .

The lower limit at which this effect of the waterproof fabric of the present invention can be exhibited is about -70 캜. When it is used in a fiber product used under an environment of -70 占 폚 or less, the waterproof fabric of the present invention may be used as an intermediate layer between a lining of a textile article and a lining of a fabric.

≪ Urethane resin film &

The urethane resin film of the present invention has a Tg of less than -30 占 폚. From the viewpoint of suppressing the curing of the tactile sensation of the waterproof fabric even under a low temperature environment, it is preferably -40 DEG C or lower. More preferably -50 DEG C or less.

In the present invention, Tg is measured by differential scanning calorimetry (DSC).

The urethane resin film is mainly composed of an ether-based urethane resin. Mainly means that 50% or more of the urethane resin forming the urethane resin film is composed of ether-based urethane resin in a mass ratio.

As the ether-based urethane resin, a polyether polyol is used as a polyol used as a raw material for a urethane resin, and a polyether ester polyol or a modified product thereof may be used. Preferably, a polyether polyol not containing an ester is used as the polyol.

The urethane resin film may be a mixture of an ether-based urethane resin and an ester-based urethane resin to the extent that the object of the present invention is not adversely affected. However, the compounding ratio of the ester-based urethane resin is less than 50% by mass in the urethane resin film.

When a urethane resin film having moisture permeability is used, it is preferable to use an oxyethylene group-containing polymeric diol as the polyol.

The urethane resin film may contain a pigment, an antistatic agent, an antibacterial agent, an ultraviolet absorber, an infrared absorber, a deodorant, an antioxidant, a moisture absorber, a hygroscopic exothermic material and a flame retardant.

The shape of the urethane resin film may be a nonporous membrane or a porous membrane. The porous film may be formed by a wet method or by a dry foaming method. Further, a plurality of nonporous membranes may be laminated, a plurality of porous membranes may be laminated, or a combination of a porous membrane and a nonporous membrane may be used.

From the viewpoint of suppressing the curing of the skin under low temperature environment of the waterproof fabric, the urethane resin film is preferably nonporous. In the case of a non-porous urethane resin film, the resin film is hardly hardened even when it is exposed to a low-temperature environment in a state where water is contained in the resin film.

From the viewpoint of suppressing the deterioration of the waterproof property of the waterproof fabric in a low-temperature environment, the urethane resin film is preferably porous. In the case of a porous urethane resin film, even when exposed in a low-temperature environment, the waterproof property hardly deteriorates.

More specifically, even under a low-temperature environment, sweat is released from the human body when sweat is worn to perform work or sports. While the sweat passes through the porous film, it becomes liquefied by the low-temperature environment and becomes water, becomes more solidified and becomes ice, and fills the pores of the porous film. As a result, the pores, which are the paths through which the sweat of the gas passes, are reduced and the moisture permeability is lowered. As a result of the sweat on the gas that has lost its place, fissures in the clothing are promoted and ice is generated in the porous urethane resin film The tactile sensation is hardened, and the resin film is damaged by the ice, so that the waterproof property may be lowered.

In addition, as long as the object of the present invention is not deteriorated, the urethane resin film may be laminated on the porous polytetrafluoroethylene film and the fiber fabric may be laminated. In this case, it is preferable that the pores of the porous polytetrafluoroethylene are filled with a urethane resin, and the pores of the porous polytetrafluoroethylene are made nonporous as a whole.

The thickness of the urethane resin film is preferably 1 to 200 탆.

When the urethane resin film is nonporous, it is preferably about 3 to 100 탆, more preferably 3 to 80 탆, and still more preferably 5 to 50 탆. If the thickness of the nonporous membrane is less than 1 탆, there is a possibility that sufficient waterproof performance can not be exhibited. If the thickness is more than 200 탆, the obtained waterproof fabric has a hard feel.

When the urethane resin film is porous, it is preferably about 10 to 150 占 퐉, and more preferably 20 to 100 占 퐉. If it is less than 10 탆, there is a possibility that sufficient water resistance can not be exhibited. Particularly, when used under a low-temperature environment, it should be 15 占 퐉 or more from the viewpoint of maintenance of waterproof property. In addition, when the thickness exceeds 150 탆, there is a concern that the feel of the waterproof fabric becomes hard.

The lamination of the urethane resin film and the fiber fabric may be laminated using an adhesive. The adhesive can be laminated by interposing a urethane resin film and a fiber fabric interposed between the urethane resin film and the fiber fabric in a dotted line, a line, a lattice, a full-beta or the like. From the viewpoint of water resistance, it is preferable that the adhesive is interposed in the form of a full-face beta. Further, from the viewpoint of suppressing the generation of ice between the fiber fabric and the urethane resin film, it is sufficient that the waterproof fabric having the adhesive in the front beta-phase between the urethane resin film and the fiber fabric is formed.

As the adhesive, an isocyanate-based, epoxy-based, oxazoline-based, or the like can be used, but isocyanate-based, particularly urethane-based adhesive may be used.

When the urethane resin film and the fiber fabric are laminated by interposing the adhesive over the entirety of the β-phase, the ether-based urethane resin is preferable, and particularly preferably the ether-based urethane resin having a Tg of less than -30 ° C. Resins are preferred. More preferably, the Tg is -40 DEG C or lower, more preferably -50 DEG C or lower.

When the adhesive has an ether-based urethane resin having a Tg of less than -30 占 폚, it suppresses the curing of the waterproof fabric in a low temperature environment and suppresses the deterioration of the waterproof property.

The adhesive may be either a one-pack type or a two-pack type, and may be a moisture-curing hot-melt type adhesive.

<Textile fabric>

The material of the textile fabric useful in the waterproof fabric of the present invention may be selected from the group consisting of chemical fibers such as polyester, nylon, acrylic, polyurethane, acetate, rayon, poly lactic acid, aramid, polyimide, natural fibers And may be fused, blended, or knitted, and is not particularly limited. In addition, they may be in any form such as a fabric, a knitted fabric, and a nonwoven fabric.

In particular, when the waterproof fabric of the present invention is used as a surface of a textile product such as a garment, and when the textile product such as a garment is used, the pick-up rate of the water of the textile fabric used on the outside (opposite to the body) %, More preferably less than 5%, still more preferably less than 3%, further preferably less than 1%. The lower limit is preferably 0%.

By controlling the pick-up rate of water to less than 10%, impregnation of water into the textile fabric is suppressed and generation of ice in the textile fabric is suppressed under a low-temperature environment of 0 ° C or lower. When used in an environment below 0 ° C, it may be thought that there is no opportunity for liquid water to adhere to the outside of the garment. However, the temperature of the day rises and the water from which snow or ice melts creates the fibers Water is adhered to the fabric by the repetition of access to the fabric, warm office or tent, cold outdoors, out of the cold freezer, and out of the hot (sometimes in the rain) There is a concern.

As a fiber fabric having a water pickup of less than 10%, it is preferable to use a hydrophobic material such as polyester or wool. Further, it is preferable that a water-repellent agent such as a fluorine-based, silicone-based, or paraffin-based water-repellent agent is applied to the fiber fabric so that the pick-up rate of the water of the fiber fabric is less than 10%. More preferably, polyester, nylon, aramid, polyimide and wool are preferably subjected to water-repellent processing. Particularly preferably, the polyester to which the above water repellent agent is added is preferable.

Also, from the viewpoint that the pick-up of the water of the fiber cloth is less than 10%, the water repellency of the fiber cloth is preferably not less than grade 3, more preferably not less than grade 4,

From the viewpoint of suppressing hardening of tactile sensation under a low temperature environment or suppressing deterioration of waterproof property, the waterproof fabric of the present invention is used as a surface of a textile product such as clothes, It is preferable that the pickup amount of water of the above-mentioned fiber fabric used for the inner side (body side) of the fiber product is 100 g / m 2 or less. More preferably not more than 70 g / m 2, further preferably not more than 50 g / m 2, still more preferably not more than 30 g / m 2.

If a fiber fabric having a pick-up amount of water exceeding 100 g / m 2 is used, a large amount of sweat is contained in the fiber fabric, and water caused by the sweat may freeze and cure the fiber fabric. Further, if work or movement is continued in the state where ice produced at this time is attached, there is a fear that the resin film is damaged at the corners of the ice and the waterproof property is lowered.

That is, in a low temperature environment below -30 占 폚, perspiration from the human body in the interior of the textile product such as clothing is defaced (liquefied) from the gas state in the vicinity of the outer surface side in the clothes and the liquefied water is frozen, There is a fear that the resin film is damaged at the corners of the ice due to the adhesion of the ice to the inside of the ice and the hardening of the touch or the operation in the state where the ice is attached.

The fiber fabric used for the inner side of the fiber product is provided with a water repellent such as a fluorine-based, silicone-based or paraffin-based fiber to the fiber fabric in the same manner as the fiber fabric used for the outer side of the fiber product, Or the like, may be inhibited from being swollen and frozen to the inside of the fiber product.

On the other hand, when the above-mentioned amount of water pick-up is 100 g / m 2 or less, it is possible to use a fiber fabric or a fiber material having absorbency or hygroscopicity to lower the humidity in the clothes or to absorb perspiration in the fabric, Freeze and loss of the urethane resin film inside the fiber product by suppressing the generation of ice which is a thickness that damages the urethane resin film by using the sweat of the liquid phase quickly on the fiber fabric, Maybe. The fibrous fabric having absorbency or hygroscopicity may be either those having absorbency or hygroscopicity to the fibers themselves or hydrophilic compounds or hygroscopic compounds to the fibers to impart absorbency and hygroscopicity to the fabric. A fiber fabric having hygroscopicity and repellency may also be used.

The pick-up rate and the amount of pick-up of water are measured by measuring the mass of the dried fabric (A), immersing the fabric in water for about 10 seconds, and then immediately manging the fabric , And the mass (B) of the second woven fabric after sieving was determined by the following formulas (1) and (2).

Pickup rate (%) = (B (g) -A (g)) / A (g) x100 (One)

(G / m 2) = (B (g) -A (g)) / A (g) × mass per unit area of fabric (2)

In addition, textile fabrics may be subjected to antistatic processing, antibacterial deodorization, sterilization processing, ultraviolet shielding processing, infrared absorption processing, infrared reflecting agent, etc., including dyeing and printing.

The waterproof property of the waterproof fabric of the present invention is not particularly limited as long as the water pressure is 1000 mm or more. From the viewpoint of waterproofness, the water pressure is preferably 3000 mm or more, more preferably 5000 mm or more, further preferably 10000 mm or more, and even more preferably 20000 mm or more.

Here, the water pressure refers to a value measured by a method according to JIS L1092-2009 water test (hydrostatic pressure method) method A (low pressure method) or method B (high pressure method). In addition, when the test piece was elongated by applying water pressure, a nylon taffeta (having a total density of about 210 densities of longitudinal and transverse yarns per 2.54 cm) was placed on the test piece and installed in the tester to carry out the measurement. Further, the measurement by the B method is that the unit is converted into mm in the A method in order to facilitate comparison with the A method.

Further, it is allowed to stand in an environment of -50 deg. C for 10 minutes, and the water pressure after boiling may be 1000 mm or more. It is possible to suppress the deterioration of the waterproof property even if it is put in clothes and the like manufactured by using the waterproof fabric in a low temperature environment if the water pressure can be maintained by keeping it in an environment of -50 ° C for 10 minutes have. From the viewpoint of waterproofness, the water pressure after bending is preferably at least 3000 mm, more preferably at least 5000 mm, even more preferably at least 10000 mm, even more preferably at least 20000 mm.

The sample was allowed to stand for 10 minutes in an environment of -50 deg. C, and after the bending test, evaluation was made by the following two methods.

(1) A sample of 20 cm in length × 20 cm in width was placed in an environmental test tank (PSL-4SPH, manufactured by Tavai ESPEC Co., Ltd.) set at a temperature of -50 ° C. and allowed to stand for 10 minutes. The sample was held at a distance of about 5 cm between the hands and the hands, and the specimens were shaken up and down 20 times in the environmental test tank. Thereafter, the sample is taken out from the environmental test tank and allowed to stand at room temperature for 24 hours. Then, the water pressure is measured by the method according to JIS L1092-2009 A (low pressure method) or B method (high pressure method).

(2) An environmental test tank similar to the above (1) except that the test sample was immersed in water for 5 minutes before putting it in the environmental test tank, and the water drops adhering to the surface of the sample were wiped off with a towel And the water pressure is measured. In addition, when the sample was immersed in water, a weight of 100 g was placed on the sample so that the entire sample was immersed in water.

Further, the waterproof fabric of the present invention may be a moisture permeable waterproof fabric having moisture permeability. The moisture permeability is measured by the calcium chloride method JIS L1099-2012 A-1 method and the potassium acetate method according to JIS L1099-2012 B-1 method, and the moisture permeability according to the calcium chloride method is 2000 g / m 2 24 hrs or more and / Is 2000 g / m &lt; 2 &gt; .24 hrs or more. More preferably, the water vapor permeability according to the calcium chloride method is 5000 g / m 2 24 hrs or more and / or the water vapor permeability according to the potassium acetate method is 5000 g / m 2 24 hrs or more. More preferably, the water vapor permeability according to the calcium chloride method may be 10,000 g / m 2 24 hrs or more and / or the water vapor permeability according to the potassium acetate method may be 10000 g / m 2 24 hrs or more.

The upper limit is about 20000 g / m 2 24 hrs according to the calcium chloride method, and about 50000 g / m 2 24 hrs for the water vapor permeability according to the potassium acetate method. If the upper limit is exceeded, there is a possibility that the waterproof property is insufficient or the moisture absorbed in the urethane resin film is frozen at a low temperature, the touch of the waterproof fabric is hardened, or the urethane resin film is lost.

In addition, the moisture permeability is calculated by converting the amount of moisture per 24 hours in both the calcium chloride method and the calcium acetate method.

The waterproof fabric of the present invention is not particularly limited as long as it is formed by laminating a textile fabric on at least one side of a urethane resin film. However, it may be used as a cloth for a textile product such as a garment, It is preferable to have a textile fabric. By having the above-mentioned preferable fiber fabric on the inside (body side) of the fiber product, deterioration of the water resistance due to freezing of the water in a low temperature environment can be suppressed.

Further, in the case where the fabric is not provided on the outer side (opposite side of the body) of the clothes or the like, even if water adheres to the outer surface of the waterproof fabric, it is easily removed from the surface of the waterproof fabric, And is preferable from the viewpoint of suppressing deterioration of waterproof property.

In addition, when the fabric is used as a textile product such as a garment and the textile fabric is provided on the outer side of the textile product (on the opposite side of the body), the urethane resin film is prevented from being lost due to physical scratches, It is possible to suppress the deterioration of the water resistance caused by the freezing of water in the water.

Particularly preferably, it is preferable that a fiber fabric is laminated on both sides of the urethane resin film. Since the above-mentioned fiber fabric is laminated on both surfaces of the urethane resin film, the loss of the urethane resin film is prevented, and also the curing of the touch of the waterproof fabric in the lower temperature environment and the deterioration of the waterproof property of the waterproof fabric caused by freezing of water are suppressed .

In the case where a fiber fabric is laminated on both sides of the urethane resin film, the fiber fabric laminated on each side may be the same fiber fabric or other fiber fabric. Preferably, it is preferable to use a fiber fabric suitable for each of the above-mentioned preferable conditions, which is used for the inside of the garment (fiber product) and for the outside of the garment (textile product).

When the fibrous fabric is laminated only on one side of the urethane resin film, the surface of the urethane resin film on which the fibrous fabric is not laminated is coated with a pigment, spherical particles, scaly particles, amorphous particles, infrared absorbers, ultraviolet absorbers, Even if a resin added with an inhibitor, a water repellent agent, an antimicrobial agent, a hygroscopic agent or the like is imparted to the urethane resin film surface in any desired shape such as pore, line, lattice, or geometric patter, and functionalities such as designability, hygroscopicity, good.

<Textile products>

Next, a description will be given of a textile product using the waterproof fabric of the present invention as a surface of a garment or the like. Further, the present invention is not limited to the fiber products described below. In the following description, a description of some of the parts described earlier will be omitted.

The fiber product of the present invention refers to a fiber product produced by secondary processing such as sewing or fusion using at least a part of the waterproof fabric of the present invention as a surface. Specific examples include, but are not limited to, windbreakers, coats, jackets, jackets, anoraks, ski wears, snowboard wears, rainwear, work clothes, tents, sleeping bags, hats and shoes .

The fiber product of the present invention may be formed by using a lining made of another fabric or by providing an inner layer of a feather or cotton between the outer and lining. The fabric having the same structure as that of the waterproof fabric of the present invention may be used as a cloth, a lining, or a batting pad.

In the fiber product of the present invention, the waterproof fabric of the present invention for use in the outer fabric can be obtained by using a fiber fabric on the outer side (outside of the body or the like) of the fiber product or by using a fiber fabric on the inner side It is good. When the outer side is made of a resin film without using a fiber fabric on the outer side, it may be formed using a urethane resin having excellent abrasion resistance. When the outer side is made of a fiber fabric, it is preferable that the fabric has water repellency, and in particular, a fiber fabric satisfying preferable conditions when the above-mentioned fiber fabric is used as the outer side may be used.

When a fiber fabric is used on the inner side (body side) of the fiber product, a fiber fabric satisfying preferable conditions when the above-mentioned fiber fabric is used as the inner side may be used. According to the present invention, especially for a waterproof fabric having a fiber fabric on the inner side (on the body side), the curing of the tactile feeling is suppressed and the effect of suppressing the deterioration of the waterproof property is exerted.

It may also be a fiber product produced by laminating a textile fabric on both sides of a urethane resin film.

Next, the present invention will be described in more detail by taking a waterproof fabric in which a fabric is laminated on both sides of a urethane resin film according to one preferred manufacturing method of the present invention. The present invention is not limited to those obtained by the production method described below. In the following description, a description of some of the parts described earlier will be omitted.

<Manufacturing Method of Waterproof Fabrics>

First, a resin solution of the ether-based urethane resin is applied on a release paper, followed by drying at 50 to 130 캜 and, if necessary, heat treatment at 120 to 170 캜 to form a porous urethane resin film.

At this time, it is also possible to form a porous urethane resin film by mixing a known foaming technique, for example, air to the urethane resin to be coated, or adding a foaming agent to the urethane resin.

After forming a urethane resin film, a resin solution containing an adhesive is applied on the obtained urethane resin film, and after drying at 50 to 130 캜, the textile fabric 1 is laminated on the surface of the urethane resin film coated with the adhesive, nip using a nip or a heat roll, and then bonding the laminate to the laminate, followed by dry lamination.

In addition, it is also possible to produce the fiber fabric 1 by bonding the fiber fabric 1 without drying the resin solution containing the adhesive, and also by the wet lamination method.

The textile fabric 1 may be subjected to a necessary treatment such as antistatic processing, water repellent processing, antibacterial deodorization processing, antibacterial processing, ultraviolet shielding processing, calendar processing, etc., including refining, dyeing and printing. When the obtained waterproof fabric is used as the outer surface of the fiber product, when the fiber fabric 1 is used on the outside of the fiber product such as clothes (on the side opposite to the body), water repellent processing may be performed. Further, in the case of using the fiber fabric 1 as the inside (body side) of the clothes or the like, hydrophilic processing, moisture absorption processing, or water repellent processing may be performed.

The resin solution of the urethane resin to be applied to the release paper is preferably selected from the above-mentioned ether-based urethane resin and an organic solvent such as dimethylformamide (hereinafter referred to as DMF), toluene and methyl ethyl ketone as a solvent. In addition, an ester-based urethane resin may be added within a range not deviating from some of the objects of the present invention.

In the urethane resin solution, a colorant such as a pigment, a polyisocyanate crosslinking agent, a catalyst, an antioxidant, an ultraviolet absorber, a moisture absorbent, a flame retardant, a deodorant and the like may be added as described above.

The resin solution of the urethane resin is applied on a release paper by using a knife coater, a bar coater, a comcotorer or the like.

The application of the adhesive onto the resultant non-porous urethane resin film on the release paper can be carried out by applying the resin solution containing the above adhesive to a pelletized, , And the adhesive is applied on the front beta layer.

The resin solution containing the above adhesive may be dissolved in an organic solvent such as dimethylformamide (hereinafter referred to as DMF), toluene or methyl ethyl ketone, or may be dissolved by heating if it is a hot-melt type resin.

A crosslinking agent, a catalyst, an antioxidant, an ultraviolet absorber, a moisture absorbent, a flame retardant, and a deodorant may be added to the resin solution containing the adhesive.

Further, after the nonporous film is laminated to the fabric 1 with the adhesive, aging is carried out at 50 to 100 ° C for 12 to 72 hours, if necessary, and the release paper is peeled off.

Next, a resin solution containing an adhesive is applied to the surface of the non-porous urethane resin on which the fiber fabric 1 is not laminated. After drying at 50 to 130 ° C as described above, the fabric is joined to the fabric 2 and can be produced by the dry lamination method.

It is also possible to produce the fiber cloth by dry lamination without drying the resin solution containing the adhesive.

Thereafter, as described above, the nonporous film is laminated to the fabric 2 through an adhesive, and if necessary, aging is carried out at 50 to 100 ° C for 12 to 72 hours to obtain a waterproof fabric laminated with a textile fabric on both sides of the urethane resin film .

The fiber fabric 2 may be subjected to emulsion processing, water repellency processing, antibacterial processing, sterilization processing, ultraviolet shielding processing, calendar processing, etc., as necessary, such as refining, dyeing and printing, as in the case of the fabric 1. When the obtained waterproof fabric is used as the outer surface of the fiber product, when the fiber fabric 1 is used on the outer side of the fiber product such as clothing, water repellent processing may be performed. Further, in the case of using the fabric 1 as the inner side of clothes or the like, hydrophilic processing, hygroscopic processing, and / or water repellent processing may be performed.

The waterproof fabric, in which the fiber fabric is laminated on both sides of the aged urethane resin film as required, is formed by laminating a textile fabric to a urethane resin film, and then dyed and printed, and then subjected to electrostatic processing, water repellent processing, antibacterial deodorization, Processing, calendering, and the like may be carried out as needed.

Further, when the water-repellent processing is not performed in advance on the textile fabric used for the outer side of the textile product such as clothes, it may be subjected to water-repellent processing after being laminated on the urethane resin film. In the case where the fiber fabric used as the inner side of the clothes or the like is not previously subjected to hydrophilic processing, hygroscopic processing or water repellent processing, it may be subjected to hydrophilic processing, hygroscopic processing, or water repellent processing after being laminated on the urethane resin film .

Example

Hereinafter, the present invention will be further described with reference to Examples, but the present invention is not limited at all by these Examples. In the examples, &quot; part &quot; is a mass part.

Evaluation in the following examples was carried out according to the following method.

A pickup ratio and pickup amount

The pick-up rate and the pick-up amount of the water were measured by measuring the mass (A) of the dry fiber fabric, immersing the fabric in water for about 10 seconds, immediately mangling the cloth twice, And the mass (B) of the subsequent fabric is obtained by the following formulas (1) and (2). The mass per unit area refers to mass A per unit area (JIS method) in the standard state of JIS L1096-2010.

Pickup rate (%) = (B (g) -A (g)) / A (g) x100 (One)

(G / m 2) = (B (g) -A (g)) / A (g) × mass per unit area (g / (2)

The mangle was made of nitrile butadiene rubber (NBR), hardness of 80 degrees, winding thickness of 12.5 cm, diameter of 150 mm, and surface pressure of 1750 kpa (17.9 kg / cm2).

B Water vapor permeability

The calcium chloride method was measured by the method of JIS L1099-2012 A-1.

The potassium acetate method was measured by the method of JIS L1099-2012 B-1.

Also, any moisture permeability was converted into a moisture permeability per 24 hours.

C water pressure

JIS L1092-2009 Water resistance test (hydrostatic pressure method) Measured by the method according to method A (low pressure method) or method B (high pressure method).

When the test piece was elongated by applying water pressure, a nylon taffeta (having a total density of about 210 densities per 2.54 cm) on the test piece was placed on the test piece, and the measurement was carried out.

C-1: water pressure after bending in an environment of -50 ° C 1

A sample of 20 cm in length × 20 cm in width was placed in an environmental test tank (PSL-4 SPH manufactured by Tavai Eps Co., Ltd.) at a temperature of -50 ° C., left in an open state for 10 minutes, Hold the sample with a gloved hand so that the distance between the hands and hands is about 5 cm, and rub it up and down 20 times in the environmental test tank. Thereafter, the sample is taken out from the environmental test tank and allowed to stand at room temperature for 24 hours. Then, the water pressure is measured by the method according to JIS L1092-2009 A (low pressure method) or B method (high pressure method).

C-2: Water pressure after bending in an environment of -50 ° C 2

The same procedure as in the above (1) was repeated, except that the test sample was immersed in water for 5 minutes before putting it in an environmental test tank set at -50 占 폚, and then the water droplets adhering to the surface of the sample were removed with a towel The water pressure was measured. In addition, when the sample was immersed in water, a weight of 100 g was placed on the sample so that the entire sample was immersed in water.

D touch

Samples were allowed to stand for 10 minutes under the conditions of C-1 and C-2 above, and each sample was evaluated by touching one glove in an environmental test tank. A case where the temperature was equal to that at room temperature was evaluated as &amp; cir &amp;, and a case where a slightly hardened surface was cured to such an extent that it was considered difficult to use as clothes.

D water repellency

According to the JIS L1092-2009 spray test, the water content of the fabric 1 was measured.

(Example 1)

The polyester fabric was dyed black with a disperse dye (warp 84 dtex / 72 filament, weft warp 84 dtex / 72 filament, mass per unit area 120 g / m 2), and the fluorine-based water repellent Asahi Guard AG-E081 (manufactured by Asahi Glass Co., Ltd.) was used as the textile fabric 1. When used as a garment, the textile fabric 1 is used on the side opposite to the body (outer side) as the outer cloth. Also, the pick-up rate of the fabric 1 was less than 1%.

Next, the following resin solution was applied on a release paper at a slit of 0.07 mm using a comma coater and dried at 120 占 폚 to obtain a non-porous urethane resin film having a thickness of 13 占 퐉.

Resin solution (for making non-porous urethane resin film)

Ether-based polyurethane resin (solid content 30%; Tg: -50 占 폚) 100 parts

Methyl ethyl ketone 60 parts

White pigment 8 parts

Next, the resin solution for an adhesive was applied on the entire surface of the non-porous urethane resin film in the form of a slit with a slit of 0.08 mm using a comcotter. Then, it was dried at 120 DEG C for 2 minutes.

Resin solution (for adhesive)

Ether-based polyurethane resin (solid content 45%; Tg: -50 占 폚) 100 parts

Toluene 50 parts

Isocyanate-based crosslinking agent 9 part

Organotin catalyst 1 part

The fiber fabric 1 is polymerized on the surface of the adhesive and bonded by thermal compression (dry lamination).

The releasing paper was peeled off, and the same resin solution for adhesive as above was applied to the surface of the non-porous urethane resin film on which the fabric 1 was not laminated, with a slit of 0.08 mm using a comcotor, did. Then, it was dried at 120 DEG C for 2 minutes.

The surface of the urethane resin film coated with this adhesive was coated with a fiber fabric 2 (nylon halftrift; 18 decitex / 7 filament; gray with an acid dye; mass per unit area of 36 g / m 2; pickup amount: 23 g / After the fiber fabric 2 was bonded by thermal compression (dry lamination) after polymerization, it was aged at 70 캜 for 48 hours.

Next, a finishing set was performed at 150 占 폚 for 30 seconds to obtain a waterproof fabric in which a fiber fabric was laminated on both sides of the urethane resin film. Further, the fabric 2 is used on the body side (inner side of the garment) when used as the outer surface of the garment.

The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

Comparative Example 1

The following resin solution was coated on one surface of the same textile fabric 1 as in Example 1 with a slit of 0.10 mm using a comcotter, immersed in water and solidified, desolvated, washed with water and dried to give a porous Thereby forming a urethane resin film. Thereafter, the sheet was dried at 150 캜 for 30 seconds to obtain a waterproof fabric in which a fibrous fabric was laminated on one side of a porous urethane resin film. This fabric 1 is used on the side opposite to the body (outer side of the garment) when used as the outer surface of the garment, as in the first embodiment.

Resin solution (for making a porous urethane resin film)

Ester-based polyurethane resin (solid content 25%; Tg: -15 캜) 100 parts

Methyl ethyl ketone 50 parts

White pigment 8 parts

Next, on the surface of the porous urethane resin film on which the fabric 1 was not laminated, the same fabric 2 as in Example 1 was laminated in the same manner as in Example 1 to obtain a waterproof fabric. Further, the fabric 2 is used on the body side (inner side of the garment) when used as the outer surface of the garment.

The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

Comparative Example 2

A polyester sheeting (83 decitex / 72 filament: mass per unit area of 155 g / m2) having a pickup amount of 104 g / m2 was used as the fabric 2. Further, the fabric 2 is used on the body side (inner side of the garment) when used as the outer surface of the garment.

A waterproof fabric was obtained in the same manner as in Example 1 except that the above fabric cloth 2 was used.

The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

Example 2

The polyester fabric used in Example 1 as the fabric 1 was subjected to water repellency treatment using a 3% aqueous solution of NT-X620 (manufactured by NANO-TEX Co., USA) as a water repellent agent. The pick-up rate of the fabric 1 was 1.8%. A waterproof fabric was obtained in the same manner as in Example 1 except that the above fabric cloth 1 was used. The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

Example 3

As the fiber fabric 1, polyester twill yarn (84 dtex / 72 filaments of warp yarns, 167 dtex / 36 filaments of warp yarns and 200 g / m 2 per unit area) was dyed yellow as a disperse dye and the fluorine-based water repellent agent Asahi Guard AG- (Manufactured by Asahi Glass Co., Ltd.) was used. When used as a garment, the textile fabric 1 is used on the side opposite to the body (outer side) as the outer cloth. Also, the pick-up rate of the fabric 1 was less than 1%.

(22 decitex / 24 filaments: mass per unit area of 50 g / m2) having a pickup amount of 24 g / m &lt; 2 &gt; Further, the fabric 2 is used on the body side (inner side of the garment) when used as the outer surface of the garment.

A waterproof fabric was obtained in the same manner as in Example 1 except that the above fabric cloth 1 and the fabric cloth 2 were used.

The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

Example 4

As a textile fabric 1, a nylon lipstop taffeta (26 decitex / 20 filament of warp, 26 decitex / 20 filament of weft warp, mass 80 g / m2 per unit area) was dyed with an acid dye in red and fluorine-based water repellent Asahi Guard AG -E081 (manufactured by Asahi Glass Co., Ltd.) was used. When used as a garment, the textile fabric 1 is used on the side opposite to the body (outer side) as the outer cloth. Also, the pick-up rate of the fabric 1 was less than 1%.

A nylon-made half-tricot (mass per unit area of 10 g / m 2; dyeing with an acid dye in gray) having a pickup amount of 7 g / m 2 was used as the fabric 2. Further, the fabric 2 is used on the body side (inner side of the garment) when used as the outer surface of the garment.

A waterproof fabric was obtained in the same manner as in Example 1 except that the above fabric cloth 1 and the fabric cloth 2 were used.

The physical properties and the like of the obtained waterproof fabric are shown in Table 1.

The results of the examples show that Examples 1 to 4 using a urethane resin film obtained by using an ether-based urethane resin having a glass transition point of lower than -30 占 폚 do not cure even under an environment of -50 占 폚, It was available.

In contrast, in Comparative Example 1 using an ester-based urethane resin having a glass transition point of -30 占 폚 or more, the feeling of touch was remarkably cured under an environment of -50 占 폚, and thus it could not be used as a textile product such as clothes.

Further, in Examples 1 to 4, in which the pickup of water of the fiber fabric used for the inner side (body side) of the fiber product as a garment was less than 100 g / m 2, the fibers such as clothing It was available as a product.

In contrast, in Comparative Example 2 in which the pickup amount of water exceeded 100 g / m &lt; 2 &gt;, the tactile sensation was remarkably cured and could not be used as a textile product such as clothes. In addition, the water pressure was measured by returning to room temperature, but the water resistance was greatly lowered.

Claims (8)

A waterproof fabric comprising a urethane resin film having a glass transition point of less than -30 캜,
Wherein the urethane resin film is mainly composed of an ether-based urethane resin.
The method according to claim 1,
Characterized in that said waterproof fabric is used as a surface of a textile product.
3. The method according to claim 1 or 2,
Wherein the amount of picked up water of the fiber fabric used for the inside of the fiber product when the fiber product is used is 100 g / m 2 or less.
4. The method according to any one of claims 1 to 3,
Wherein the urethane resin film is a nonporous membrane.
5. The method according to any one of claims 1 to 4,
Characterized in that the urethane resin film is bonded to the textile fabric through an adhesive.
6. The method of claim 5,
Wherein the adhesive is an ether-based urethane resin.
The method according to claim 5 or 6,
Wherein the urethane resin used for the adhesive has a glass transition point of less than -30 占 폚.
A fiber product using the waterproof fabric according to any one of claims 1 to 7 as a surface layer.