JP2007160518A - Waterproof moisture permeable fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproof moisture permeable fabric capable of enhancing the mechanical strength such as abrasion resistance, tensile strength, etc. related to a waterproof moisture permeable layer, capable of especially suppressing the lowering of the mechanical strength due to swelling in a case that the waterproof moisture permeable layer made of a hydrophilic non-porous resin is used and capable of being adjusted in its expansion and contraction ratio corresponding to application. <P>SOLUTION: The waterproof moisture permeable fabric 1 is equipped with a base material 2 becoming surface cloth and the waterproof moisture permeable layer 3 becoming back cloth and the base material 2 is integrally laminated and formed to one side of the waterproof moisture permeable layer 3 in a contact state while a reinforcing members 4 are united with the other surface of the waterproof moisture permeable layer 3. The moisture permeable cells 5, which are partitioned by the reinforcing members 4 to be demarcated in a large number of cells, are formed to the waterproof moisture permeable layer 3 and the waterproof moisture permeable layer 3 is exposed from the demarcated moisture permeable cells 5. The reinforcing members 4 are formed into the plane patterns of the meshes of various knitted fabrics such as tricot in a planar shape. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waterproof and moisture-permeable fabric that is waterproofed without impairing the moisture permeability of the fabric.

  Conventionally, waterproof and moisture-permeable waterproof and moisture-permeable fabrics have a waterproof and moisture-permeable waterproof and moisture-permeable resin thin film (hereinafter referred to as “waterproof and moisture-permeable thin film”) on one side of a fabric such as a woven fabric or knitted fabric. For example, it is used as a part of cloth for clothing.

  Various methods for laminating and forming this waterproof and moisture permeable thin film on a fabric have been proposed at present, for example, a method of directly laminating and forming a waterproof and moisture permeable thin film on one side of a fabric by a wet process or a dry process, or Some films are laminated by attaching a waterproof and moisture-permeable thin film to one side of the fabric by film lamination.

  Thus, according to the fabric in which the waterproof and moisture-permeable thin film is laminated, that is, the waterproof and moisture-permeable fabric, the waterproof property of the waterproof and moisture-permeable thin film is further imparted in addition to the breathability and moisture permeability inherent in the fabric itself. Is done. In addition, the moisture permeability of the waterproof and moisture-permeable thin film suppresses a decrease in moisture permeability of the fabric.

  In addition, as described in Patent Document 1 below, the waterproof and moisture-permeable thin film is formed of a waterproof and moisture-permeable thin film formed of a microporous resin and a hydrophilic nonporous resin when classified from a moisture-permeable mechanism. It is divided into a waterproof and moisture-permeable thin film.

  Here, the waterproof and moisture-permeable thin film made of microporous resin has a moisture permeability function of allowing permeation to moisture that is smaller than its own micropores, while having a larger size than its own micropores. It has a waterproof function of preventing permeation of raindrops and other moisture.

On the other hand, for waterproof and moisture-permeable thin films made of hydrophilic non-porous resin, moisture such as sweat is taken inside through the presence of the hydrophilic functional group (hydrophilic group), and the moisture content is reduced outside. While exhibiting a moisture permeability function of releasing water, it is nonporous and exhibits a waterproof function of preventing permeation of raindrops and other moisture.
JP-A-2005-105168

  However, the waterproof and moisture-permeable thin film described above is generally fragile in mechanical strength such as tensile strength and abrasion resistance because it has only a thickness of about 10 μm to about 50 μm, and the waterproof and moisture-permeable thin film is the entire back surface of the fabric. Since the waterproof and moisture-permeable thin film is directly subjected to friction and tension, the waterproof and moisture-permeable fabric is liable to be damaged.

  In particular, some waterproof and moisture-permeable thin films made of hydrophilic non-porous resin have a thickness of only about 10 μm to about 25 μm. Since it may swell and mechanical strength may fall, there existed a problem that it will become easily damaged by the frictional force and tensile force from the outside.

  Therefore, in order to solve these problems, the applicant of the present application applied a reinforcing fabric such as a thin tricot on the other side of the waterproof and moisture-permeable thin film formed on one side of the surface fabric in the above-mentioned Patent Document 1. It was proposed to protect the waterproof and breathable thin film by wearing it.

  However, when a reinforcing fabric such as tricot is attached to the waterproof and moisture permeable thin film of the waterproof and moisture permeable fabric as described in Patent Document 1, the stretchability of the waterproof and moisture permeable thin film is inhibited by the reinforcing fabric. However, it has become a problem that it is difficult to ensure the necessary stretchability for fabrics for exercise and the like that are violently and frequently repeatedly rubbed and stretched.

  The present invention has been made to solve the above-described problems, and can increase mechanical strength such as abrasion resistance and tensile strength related to the waterproof and moisture-permeable layer, and is particularly made of a hydrophilic nonporous resin. An object of the present invention is to provide a waterproof and moisture-permeable fabric that can suppress a decrease in mechanical strength due to swelling when the waterproof and moisture-permeable layer is used.

  In order to achieve this object, a waterproof and moisture-permeable fabric according to claim 1 is formed by integrally laminating a waterproof and moisture-permeable layer formed of a waterproof and moisture-permeable resin and one surface of the waterproof and moisture-permeable layer. And a fabric having moisture permeability, and is formed in a plurality of cells on the other surface of the waterproof and moisture permeable layer, and the waterproof and moisture permeable membrane is formed from the inside of each cellular partition. A plurality of moisture permeable cells with exposed layers and the other surface of the waterproof moisture permeable layer on which the plurality of moisture permeable cells are formed; And a reinforcing member formed of a stretchable resin material having a tensile strength higher than that of the waterproof moisture-permeable layer.

  According to the waterproof and moisture-permeable fabric according to claim 1, moisture permeability is exhibited through the waterproof and moisture-permeable layer exposed from each moisture-permeable cell partitioned by the reinforcing member. On the other hand, a reinforcing member having a tensile strength greater than that of the waterproof and moisture permeable layer is bonded to the waterproof and moisture permeable layer, and the reinforcing member is formed of an elastic material having elasticity. The tensile strength of the waterproof and moisture-permeable layer is also reinforced while ensuring the above. Further, since the reinforcing member is bonded to the other surface of the waterproof and moisture-permeable layer in a raised state, the waterproof and moisture-permeable fabric is such that the user's body is the lining side when using the waterproof and moisture-permeable fabric. Direct rubbing against the wet layer is prevented by the interposition of the reinforcing member.

  The waterproof and moisture permeable fabric according to claim 2 is the waterproof and moisture permeable fabric according to claim 1, wherein the reinforcing member is formed of the stretchable resin material having adhesiveness with respect to the waterproof and moisture permeable layer. Printed on the other side of the layer and cured.

  According to the waterproof and moisture permeable fabric according to claim 2, in addition to the same operation and effect as the waterproof and moisture permeable fabric according to claim 1, the reinforcing member is formed on the other surface of the waterproof and moisture permeable layer by the printing means. Since printing (printing) is performed, the reinforcing member can be formed using a simple existing printing facility, and the processing cost of the reinforcing member can be suppressed.

  The waterproof and moisture-permeable fabric according to claim 3 is the waterproof and moisture-permeable fabric according to claim 1 or 2, wherein the stretchable resin material forming the reinforcing member is hydrophobic.

  According to the waterproof and moisture-permeable fabric according to claim 3, in addition to the effects and effects similar to those of the waterproof and moisture-permeable fabric according to claim 1 or 2, the stretchable resin material forming the reinforcing member is hydrophobic. Therefore, it is possible to prevent the reinforcing member from absorbing water and prevent the tensile strength and wear resistance of the reinforcing member from being lowered.

  The waterproof and moisture-permeable fabric according to claim 4 is the waterproof and moisture-permeable fabric according to any one of claims 1 to 3, wherein the stretchable resin material forming the reinforcing member is a closed cell of a nonporous resin. is there.

  According to the waterproof and moisture-permeable fabric according to claim 4, the stretchable resin material forming the reinforcing member in addition to the same functions and effects as the waterproof and moisture-permeable fabric according to any one of claims 1 to 3. Since it is a non-porous resin and a single cell, it is prevented from swelling due to water absorption and strength reduction. In addition, since the nonporous resin is made into a single cell, a reinforcing member can be formed in a wide range even with a small amount of nonporous resin, and the contact area with the waterproof and moisture permeable layer is reduced as much as possible to reduce moisture permeability. It is suppressed.

  The waterproof and moisture-permeable fabric according to claim 5 is the waterproof and moisture-permeable fabric according to any one of claims 1 to 4, wherein the reinforcing member has a planar shape in the shape of a stitch pattern such as a knitted fabric.

  According to the waterproof and moisture-permeable fabric according to claim 5, in addition to the same operation and effect as the waterproof and moisture-permeable fabric according to any one of claims 1 to 4, the planar shape of the reinforcing member is a knitted fabric or the like. Therefore, it looks as if a knitted fabric such as tricot is adhered to the other surface of the waterproof moisture-permeable layer.

  For this reason, when a decorative pattern or the like is printed on the waterproof and moisture-permeable layer, the printed pattern can be shown through the reinforcing member, and the printed pattern can be protected. Moreover, since a large number of fine moisture permeable cells can be formed on the other surface of the waterproof moisture permeable layer like the stitches of the knitted fabric, frictional contact with the waterproof moisture permeable layer is ensured while ensuring the moisture permeability of each moisture permeable cell. The reinforcing member can be used for fine protection.

  The waterproof and moisture-permeable fabric according to claim 6 is the waterproof and moisture-permeable fabric according to any one of claims 1 to 5, wherein a surface area of the waterproof and moisture-permeable layer exposed from the plurality of moisture-permeable cells is the waterproof and moisture-permeable layer. It is in the range of about 30% to about 90% of the entire surface area on the other surface of the wet layer.

  According to the waterproof and moisture-permeable fabric according to claim 6, in addition to the same functions and effects as the waterproof and moisture-permeable fabric according to any one of claims 1 to 5, the entire other surface of the waterproof and moisture-permeable layer is provided. By forming the reinforcing member so that approximately 30% to 90% of the portion is exposed from the plurality of moisture permeable cells, the waterproof and moisture permeable properties of the waterproof moisture permeable layer are secured, and further, The tensile strength can be improved.

  The waterproof and moisture-permeable fabric according to claim 7 is the waterproof and moisture-permeable fabric according to any one of claims 1 to 6, wherein the reinforcing member includes silica having a particle diameter of approximately 30 μm or less in a solid content ratio of approximately 5%. To about 30%.

  According to the waterproof and moisture-permeable fabric according to claim 7, in addition to the same action and effect as the waterproof and moisture-permeable fabric according to any one of claims 1 to 6, the reinforcing member has a particle diameter of approximately 30 μm or less. Since silica is added in a solid content ratio of about 5% to about 30%, the wear of the reinforcing member is reduced by such silica particles, and the strength of the waterproof and moisture-permeable layer accompanying the wear of the reinforcing member is prevented. The

  The waterproof and moisture-permeable fabric according to claim 8 is the waterproof and moisture-permeable fabric according to any one of claims 1 to 7, wherein the waterproof and moisture-permeable layer has waterproof and moisture-permeable properties on one surface of the fabric. A film is bonded by film lamination.

  According to the waterproof and moisture-permeable fabric of the present invention, for example, even if the waterproof and moisture-permeable layer is thin and weak in mechanical strength such as tensile strength and wear resistance, There is an effect that the tensile strength can be increased and the waterproof and moisture permeable layer can be protected from frictional contact, and damage and water leakage of the waterproof and moisture permeable layer can be suppressed. In addition, when the waterproof and moisture-permeable layer is formed of a hydrophilic nonporous resin, the mechanical strength may decrease due to water swelling. There is also an effect that excellent wear resistance and tensile strength can be imparted to the waterproof and moisture-permeable layer.

  Furthermore, compared to the case where a reinforcing fabric such as tricot is attached to the waterproof and moisture permeable layer, since the elasticity is also given to the reinforcing member itself, without inhibiting the elasticity of the waterproof and moisture permeable layer, There is an effect that sufficient stretchability can be secured even as a fabric having a severe use environment such as athletic clothing. In addition, by adjusting the tensile strength of the stretchable resin used for the reinforcing member, there is an effect that an appropriate stretch rate can be imparted to the waterproof and moisture-permeable fabric according to the application.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an enlarged longitudinal sectional view of a waterproof and moisture-permeable fabric 1 according to an embodiment of the present invention. As shown in FIG. 1, the waterproof and moisture-permeable fabric 1 includes, for example, a base material 2 that becomes a surface and a waterproof and moisture-permeable layer 3 that becomes a lining when used as various clothing fabrics. The base material 2 is integrally laminated so as to abut one surface (the upper side surface in FIG. 1) of the waterproof and moisture permeable layer 3, and the reinforcing member 4 is formed on the other surface (the lower side surface in FIG. 1). Are attached.

  The base material 2 originally has air permeability and moisture permeability, and is a woven or knitted fabric of various fibers mainly made of nylon resin, polyester resin, cotton, wool (wool) and the like. The waterproof and moisture permeable layer 3 is a thin film made of a resin material having waterproofness and moisture permeability, and can be mainly formed of a resin material mainly composed of a urethane resin or a polyester resin. It can also be formed from a resin material mainly composed of an acrylic resin or a PTFE resin.

  As described above, various materials can be used for the waterproof and moisture-permeable layer 3 as described above, but when classified based on the moisture-permeable mechanism, those made of a microporous resin thin film and a hydrophilic non-porous material are used. It is divided into those made of high quality resin thin film. Hereinafter, the microporous resin thin film that becomes the waterproof and moisture-permeable layer 3 and the hydrophilic nonporous resin thin film will be described in order.

  First, the microporous resin thin film is a resin thin film manufactured by a wet manufacturing method, and has a thickness in the range of approximately 10 μm to approximately 50 μm, and more preferably approximately 30 μm to approximately 35 μm. . The microporous resin thin film is an open-cell body in which a large number of ultrafine and uniformly dispersed pores are communicated with each other. About 500,000 pores are formed in a microporous resin thin film per unit area (1 square inch), and the pore width is about 0.3 μm to about 3 μm.

  By the way, the particle size of water vapor is about 0.4 nm (= 0.004 μm), and in the case of raindrops, the particle size from the finest drizzle to the largest thunderstorm is about 100 μm to about 3 mm (= 3,000 μm). The range of the degree. That is, the microporous resin thin film has a moisture permeability that allows water vapor particles to pass through the numerous pores because the pore width of the numerous pores is larger than the particle size of the water vapor and smaller than the particle size of the raindrops. It has a waterproof property that prevents the infiltration of conflicting raindrops.

  In particular, the pores on one surface of the microporous resin thin film are formed to have a smaller overall pore width than the pores on the other surface, and by laminating the substrate 2 on the surface having the smaller pore width. The raindrops can be made more difficult to penetrate into the waterproof and moisture-permeable layer 3.

Moreover, microporous resin film as the waterproof Shimeso 3 is moisture permeability even when laminated on the substrate 2 is approximately 10,000g ^/ m 2 · 24h~ approximately 15,000 g ^/ m 2 · 24h Yes. For example, although the amount of sweat from the human body varies among individuals, it is approximately 350 g / m ² · 24 h when resting, approximately 1,300 g / m ² · 24 h when walking at a speed of 5.5 km, and approximately 2,500 g / m when jogging. m ² · 24h, which are well below the moisture permeability of the waterproof and moisture permeable layer 3 made of a microporous resin thin film, and the waterproof and moisture permeable layer 3 has sufficient moisture permeability.

The moisture permeability described above corresponds to the mass of water vapor that passes through 1 m ² of the waterproof moisture-permeable layer 3 per 24 hours.

In addition, when the microporous resin thin film is laminated on the base material 2 as the waterproof and moisture permeable layer 3 as shown in FIG. 1, the water pressure resistance, which is a physical property value representing waterproofness, averages approximately 20,000 mmH ₂ O ( Water column) (= 2 kgf / cm ² ≈1.96 Mpa) or more. Here, the water pressure of the raincoat is generally sufficient if approximately 500 to 1,000 mmH ₂ O can be secured, whereas the water pressure of the raincoat for outdoor use is approximately 20 times or more of that, The microporous resin thin film has water resistance comparable to this.

For example, in the case of a person weighing approximately 75 kgf, when the person is seated, a pressure of approximately 0.2 kgf / cm ² is applied to the buttocks, or approximately 1.1 kgf / cm ² is applied to the knees when kneeling. substantially 2,000mmH ₂ O in terms, or substantially 11,000mmH ₂ O, and the these values are well below the water pressure resistance of the waterproof Shimeso 3. That is, sufficient waterproofness is ensured for the microporous resin thin film forming the waterproof and moisture-permeable layer 3.

  Next, the hydrophilic non-porous resin thin film is a resin thin film manufactured by a dry process, and the thickness thereof is in the range of about 10 μm to about 50 μm, more preferably about 10 μm to about It is formed to 25 μm. Unlike the above-described moisture-permeable function in the microporous resin thin film, the hydrophilic non-porous resin film has a moisture-permeable function due to a hydrophilic functional group (hereinafter referred to as “hydrophilic group”) included in the film. It is secured.

  Unlike the above-described microporous resin thin film, this hydrophilic nonporous resin thin film does not have many open-celled pores, and the water vapor concentration on one side of the hydrophilic nonporous resin thin film increases. Water vapor (moisture) is taken into the thin film by the hydrophilic group inside the thin film, and the water is transferred to the other surface side where the water vapor concentration in the thin film is low and diffused as water vapor from the other surface side of the thin film. It is. Thus, the hydrophilic non-porous resin thin film has moisture permeability that allows water vapor to pass therethrough by its own hydrophilic group, and also has waterproofness that prevents permeation of raindrops contrary to the moisture permeability.

Further, the hydrophilic nonporous resin film to form the waterproof Shimeso 3, substantially moisture permeability even in a state of being laminated on the substrate 2 15,000g ^/ m 2 · 24h~ approximately 20,000g ^/ m 2 · 24h Therefore, the performance further exceeding the moisture permeability of the microporous resin thin film described above is ensured. Moreover, the water pressure resistance of the hydrophilic non-porous resin film is substantially 15,000MmH ₂ O ~ shown 20,000MmH ₂ O in a state of being laminated on the substrate 2, over the microporous resin film as described above Waterproofness is also secured.

  The waterproof and moisture permeable layer 3 described above is formed on one surface (back surface) of the substrate 2 by a film lamination method, a wet coating method, or a dry coating method.

  Film lamination forms the waterproof moisture-permeable layer 3 on the surface of the base material 2 by bonding the above-mentioned hydrophilic nonporous resin thin film or microporous resin thin film to the base material 2. Here, when the waterproof and moisture permeable layer 3 is bonded to the base material 2 by film lamination, the moisture permeability of the waterproof and moisture permeable layer 3 is lowered when the surface of the waterproof and moisture permeable layer 3 is covered with an adhesive. Therefore, the area covered with the adhesive on the surface of the waterproof / moisture permeable layer 3 is minimized by applying an adhesive to the surface of either the base material 2 or the waterproof / moisture permeable layer 3 in a dotted or linear manner. Is suppressed.

  In addition, the wet coating method directly applies a resin having moisture permeability and waterproofness to one surface (back surface) of the base material 2 in a uniform thin film shape, and allows the base material 2 to pass through the water after the application. The water-soluble solvent contained in the resin applied to the material 2 is eluted into water to directly form the coating film composed of the above-described microporous resin thin film on the surface of the base material 2. In the microporous resin thin film, traces of solvent elution from the resin applied to the substrate 2 become a large number of pores, and moisture permeability is imparted to the thin film.

  Furthermore, in the dry coating method, a resin having moisture permeability and waterproofness (a resin different from that of the above wet coating method) is directly applied to one surface (back surface) of the substrate 2 in a uniform thin film shape, Immediate drying is performed to directly form a coating film made of the above-described hydrophilic nonporous resin thin film on the surface of the substrate 2.

  FIG. 2 is a back view of the waterproof and moisture-permeable fabric 1 as viewed from the reinforcing member 4 side in FIG. As shown in FIG. 2, on the other surface side (front side in FIG. 2) of the waterproof and moisture permeable layer 3 corresponding to the back surface of the waterproof and moisture permeable fabric 1, the waterproof member is partitioned by a reinforcing member 4 and partitioned into a plurality of cells. The moisture permeable cell 5 is formed, and the waterproof moisture permeable layer 3 is exposed from the inside of each of the moisture permeable cells 5. The total surface area of the waterproof moisture permeable layer 3 exposed from the plurality of moisture permeable cells 5 is approximately 30% to approximately 90% of the entire surface area on the other surface of the waterproof moisture permeable layer 3 (the front surface of the hand in FIG. 2). It is within the range. In other words, the reinforcing member 4 is formed in a range of approximately 10% to approximately 70% of the entire surface area on the other surface of the waterproof and moisture permeable layer 3 (front surface of the hand in FIG. 2).

  The planar shape of the reinforcing member 4 represents a stitch pattern of various knitted fabrics such as tricots, that is, a planar pattern formed by connecting a plurality of stitch-shaped rings (loops) continuously. It is formed as a continuous pattern on the entire other surface of the layer 3 (the front surface of the hand in FIG. 2). In addition, the reinforcing member 4 is made of a stretchable resin material having a tensile strength larger than that of the waterproof and moisture permeable layer 3 and adhesive to the waterproof and moisture permeable layer 3. (Printed from the lower side) and hardened.

  Note that the planar shape of the reinforcing member 4 does not have to be substantially equal to the dimensional size of the stitches of the various knitted fabrics, and the dimensional size may be similar to the actual stitch pattern of the various knitted fabrics. Further, the planar shape of the reinforcing member 4 is not necessarily limited to the tricot stitch pattern. For example, the warp knitting pattern different from the tricot, the stitch pattern of various weft knitting, Further, it may be appropriately changed to a plane pattern other than the knitted fabric, and furthermore, a design function may be imparted to the lining of the waterproof and moisture-permeable fabric 1 by adopting a high design property for the plane pattern. good.

The thickness of the reinforcing member 4 can be adjusted in the range of about 10 μm to about 200 μm. Also, some cases, in the range of 100% modulus of waterproof Shimeso 3 is substantially 20 kgf / cm ² ~ approximately 40 kgf / cm ² compared with 100% modulus of tensile strength of the reinforcing member 4 and the waterproof moisture-Shimeso 3 when the reinforcing member 4 is used as 100% modulus is in the range of about 25 kgf / cm ² ~ approximately 60 kgf / cm ^2. In addition, in order to suppress unnecessary elongation of the waterproof and moisture-permeable fabric 1, it is naturally possible to appropriately adjust the value of the 100% modulus of the reinforcing member 4.

  Further, as the stretchable resin material forming the reinforcing member 4, for example, a material mainly composed of urethane resin, acrylic resin, polyester resin or the like is used, and the reinforcing member 4 is waterproof and moisture-permeable. As a printing method for forming the layer 3, a gravure printing method can be used. The stretchable resin material forming the reinforcing member 4 is imparted with hydrophobicity, and this hydrophobicity is obtained by adding a water repellent to the low-swellable stretchable resin material.

  In addition, the stretchable resin material forming the reinforcing member 4 is formed of closed cells of nonporous resin, in which silica having a particle diameter of approximately 30 μm or less has a solid content ratio of approximately 5% to approximately 30. % Is added in the range. The stretchable resin material forming the reinforcing member 4 may be either water-based or oily, and the reinforcing member 4 is colored by adding a pigment or the like to the stretchable resin material. You may make it provide a design-like function.

In the waterproof and moisture-permeable fabric 1 of Example 1 (hereinafter referred to as “first example”), nylon taffeta composed of nylon yarns having a length of 78 dtex and a width of 100 dtex as the base material 2 is made of a fluorine-based water repellent. Use water-repellent treatment. Then, a hydrophilic non-porous resin film made of polyurethane resin is adhered to one side of the base material 2 by film lamination to form a waterproof and moisture permeable layer 3, and then the other side of the waterproof and moisture permeable layer 3 has the following: A stretchable resin material having a composition is subjected to gravure printing with a gravure coater, dried with hot air at 100 ° C., and further heat-treated at 140 ° C. for 1 minute, whereby the waterproof and moisture-permeable layer 3 has a waterproof member 4 formed with a reinforcing member 4. A wet fabric 1 was obtained.
[Composition of the stretchable resin material forming the reinforcing member 4 in the first embodiment]
-Polyurethane resin: 100 parts by weight-Crosslinking agent: 2 parts by weight-Water repellent: 2 parts by weight-Pigment: 10 parts by weight-Toluene: 40 parts by weight-MEK (methyl ethyl ketone): 20 parts by weight

Further, the waterproof and moisture-permeable fabric 1 of the first embodiment is such that the printed area of the reinforcing member 4 and the total area of the waterproof and moisture-permeable layer 3 exposed from the entire moisture-permeable cell 5 are approximately 50% each. A gravure print was applied to obtain a waterproof and moisture-permeable fabric 1. The 100% modulus of the waterproof and moisture permeable layer 3 was 20 kgf / cm ^2, and the 100% modulus of the reinforcing member 4 was approximately 25 kgf / cm ² . Furthermore, when the thickness range of the waterproof moisture-permeable layer 3 is in the range of about 10 μm to about 50 μm, the thickness of the reinforcing member 4 is adjusted to be in the range of about 20 μm to about 30 μm.

  In addition, toluene and MEK contained in the stretchable resin material having the above composition are both solvents, and in particular, when the stretchable resin material is printed due to the strong solubility of MEK, the waterproof and moisture-permeable layer 3 may be dissolved. For this reason, the MEK is mixed with toluene to weaken the solubility of the MEK to prevent the waterproof and moisture permeable layer 3 from dissolving.

In the waterproof and moisture-permeable fabric 1 of Example 2 (hereinafter referred to as “second example”), the first embodiment described above except that the reinforcing member 4 is gravure-printed by a gravure coater using an elastic resin material having the following composition. The same material and treatment as in the example were performed to obtain a waterproof and moisture permeable fabric 1 in which the reinforcing member 4 was formed on the waterproof and moisture permeable layer 3.
[Composition of the stretchable resin material forming the reinforcing member 4 in the second embodiment]
Polyurethane resin: 100 parts by weight Crosslinking agent: 4 parts by weight Silica: 8 parts by weight Water repellent: 2 parts by weight Pigment: 10 parts by weight Toluene: 50 parts by weight MEK (methyl ethyl ketone): 20 parts by weight

  For the waterproof and moisture-permeable fabrics 1 of the first and second examples obtained as described above, the moisture permeability in a dry state, the water resistance, and the water resistance after abrasion by an ART pilling tester are measured, respectively. The measurement results are shown in FIG. Moreover, about the waterproof moisture-permeable fabric 1 of the 1st and 2nd Example, when the waterproof moisture-permeable layer 3 exists in a swelling state, the water resistance after abrasion by an ART pilling tester is measured, and the measurement result is shown in FIG. Indicated.

  The comparative example in FIGS. 3 and 4 is a waterproof and moisture-permeable fabric 1 that is common to the first and second embodiments except that the reinforcing member 4 is formed. Nylon taffeta composed of nylon yarn of 78 dtex length and 100 dtex width as a water repellent treatment with a fluorine-based water repellent, and a hydrophilic non-porous resin film made of polyurethane resin is filmed on one side of the substrate 2 The waterproof and moisture-permeable layer 3 is laminated on one side of the base material 2 by bonding by lamination.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements in various dimensions, shapes, materials, and the like can be made without departing from the spirit of the present invention. It can be easily inferred that deformation is possible.

It is an expansion longitudinal cross-sectional view of the waterproof moisture-permeable fabric which is one Embodiment of this invention. It is a reverse view of the waterproof moisture-permeable fabric shown in FIG. It is the figure which showed the various measurement results performed about the waterproof moisture-permeable fabric of each Example in which a waterproof moisture-permeable layer is in a dry state in tabular form. It is the figure which showed the various measurement results performed about the waterproof moisture-permeable fabric of each Example in which a waterproof moisture-permeable layer is in a swelling state in tabular form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Waterproof moisture-permeable fabric 2 Base material 3 Waterproof moisture-permeable layer 4 Reinforcement member 5 Moisture-permeable cell

Claims (8)

A waterproof and moisture permeable layer formed of a resin having waterproofness and moisture permeability, and a base material integrally laminated on one surface of the waterproof and moisture permeable layer and having a moisture permeable fabric. In the waterproof and breathable fabric,
A plurality of moisture permeable cells formed in a plurality of cells on the other surface of the waterproof and moisture permeable layer, and the waterproof and moisture permeable layers are exposed from within each of the cellular partitions,
It is attached to the other surface of the waterproof moisture-permeable layer in which the plurality of moisture-permeable cells are formed, bulges from the waterproof moisture-permeable layer, partitions the moisture-permeable cells, and is compared with the waterproof moisture-permeable layer. And a reinforcing member made of a stretchable resin material having a high tensile strength.   The reinforcing member is obtained by printing and curing the stretchable resin material having adhesiveness to the waterproof and moisture permeable layer on the other surface of the waterproof and moisture permeable layer. The waterproof and moisture-permeable fabric according to 1.   The waterproof / breathable fabric according to claim 1 or 2, wherein the stretchable resin material forming the reinforcing member has hydrophobicity.   The waterproof and moisture-permeable fabric according to any one of claims 1 to 3, wherein the stretchable resin material forming the reinforcing member is a closed cell of nonporous resin.   The waterproof and moisture-permeable fabric according to any one of claims 1 to 4, wherein the reinforcing member has a planar shape that represents a stitch pattern such as a knitted fabric.   The surface area of the waterproof moisture-permeable layer exposed from the plurality of moisture-permeable cells is in a range of approximately 30% to approximately 90% of the entire surface area on the other surface of the waterproof and moisture-permeable layer. Item 6. A waterproof and moisture-permeable fabric according to any one of Items 1 to 5.   7. The waterproofing according to claim 1, wherein silica having a particle diameter of approximately 30 μm or less is added to the reinforcing member in a solid content ratio of approximately 5% to approximately 30%. Moisture permeable fabric.   8. The waterproof and moisture-permeable layer according to claim 1, wherein a waterproof and moisture-permeable film having waterproofness and moisture permeability is bonded to one surface of the fabric by film lamination. Wet fabric.

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