TWI548519B - Laminated body and manufacturing method thereof - Google Patents

Description

Laminated body and method of manufacturing same

The present invention relates to a laminate in which a film is interposed between two fabrics and a method of manufacturing the same.

For example, in a fiber product requiring waterproofness such as a rain gear or a tent, a waterproof fabric is used. A woven fabric having a waterproof property is a laminate in which a woven fabric composed of a plain weave is laminated on a water-repellent film (for example, see JP-A-2007-283774). In the technique described in Japanese Laid-Open Patent Publication No. 2007-283774, the warp yarn and the weft yarn of the woven fabric laminated on the waterproof film are defined as a total value of the cloth cover coefficient, and a lightweight layer can be obtained without impairing the appearance and the touch. Integral, and the sewing part can effectively fill the gap.

In recent years, the demand for further reduction in weight (thinning) has been increased for a laminate having water repellency. In general, the thinner the laminated fabric is, the thicker the stitch of the fabric becomes, and the more easily the stitch of the fabric is displaced at the time of lamination (the weft tends to occur). In addition, when the stitch of the fabric becomes thick, the adhesion of the laminated waterproof film to the fabric is lowered.

The present invention has been made to solve such a problem, and an object of the invention is to provide a laminate which can suppress the occurrence of a weft when a water-repellent film and a fabric are bonded, and which ensures water repellency. Film and The bonding strength of the fabric and the weight reduction.

The laminate according to the present invention is a laminate in which a water repellent film is interposed between a first fabric and a second fabric, and the first fabric has a mass per unit area of 3 g/m ² to 30 g/m ² . Fabric. At least one of the warp yarn and the weft yarn of the first fabric is a dot-like gap by the resin A. Here, the resin A is a resin obtained by hardening an uncured and semi-hardened thermosetting resin (first resin) having a melting point of 80 ° C to 160 ° C, or a thermoplastic resin having a melting point of 80 ° C to 160 ° C (second resin) Or a resin of a resin obtained by crosslinking the thermoplastic resin.

On the other hand, the first fabric and the water repellent film are bonded by the resin A and the thermoplastic resin B, and the second fabric and the water repellent film are bonded by the thermoplastic resin C.

Since such a laminate is a warp yarn and/or a weft of a thin fabric having a mass per unit area of 3 g/m ² to 30 g/m ² by the resin A, the weft of the warp and the weft is suppressed. occur. Further, the first fabric and the water repellent film are bonded to the thermoplastic resin B different from the resin A by the warp yarn and/or the weft interlaced fabric of the woven fabric, so that a sufficient adhesive force can be secured.

In the laminate of the present invention, it is preferable that the second fabric and the water repellent film are adhered in a dot shape by the thermoplastic resin C.

Further, it is preferable that the first fabric and the water repellent film are in a point-like manner by the resin A and the thermoplastic resin B. In this case, the laminate according to the present invention is between the first fabric and the waterproof film. As the ratio of the ratio of the resin A per unit area of the first fabric, the ratio is 1% to 20%, in the first It is preferable that the ratio of the ratio of the thermoplastic resin B to the area per unit area of the water-repellent film is 5% to 60% between the cloth and the water-repellent film.

When the second fabric and the water repellent film are adhered in a dot shape by the thermoplastic resin C, or between the first fabric and the water repellent film, the resin A and the thermoplastic resin B are stuck in a dot shape. In this case, the bonding strength can be sufficiently ensured between each and a laminate having excellent flexibility can be obtained, and a laminate having moisture permeability can be obtained. In addition, when the ratio of the resin A and the occupation ratio of the thermoplastic resin B are within the above range between the first fabric and the water repellent film, a layer having more excellent adhesion, flexibility, and moisture permeability can be obtained. Integral.

Further, the method for producing a laminate according to the present invention is a method of producing a laminate in which a water repellent film is interposed between a first fabric and a second fabric, and has a first bonding process. The first bonding process is to heat and press the first fabric and the waterproof film, and to bond with the resin A and the thermoplastic resin B; the second bonding process, the second bonding process is performed by heating and pressing The second fabric and the water-repellent film are bonded by a thermoplastic resin C. Here, the first fabric is a fabric having a mass per unit area (the total amount of warp and weft) of 3 g/m ² to 30 g/m ² . The first fabric is a first resin which is an uncured or semi-hardened thermosetting resin having a melting point of 80 ° C to 160 ° C or a thermoplastic resin having a melting point of 80 ° C to 160 ° C before the heat and pressure treatment. Any one of the second resins is subjected to a gap filling treatment of the warp yarns and/or the weft yarns of the woven fabric. Further, if the resin subjected to the gap filling treatment is a resin by the heating of the first bonding process, the resin A is a resin obtained by curing the first resin, and if the interstitial resin is the second resin, the second resin A resin obtained by crosslinking a resin or a second resin. Further, the thermoplastic resin B having a melting point of 60 ° C to 150 ° C before the heat and pressure treatment of the first bonding process is performed.

In the method of manufacturing such a laminate, even if the first fabric is a thin fabric, the first fabric or the second resin is warp yarns by the first fabric before the heat and pressure treatment in the first bonding process / or the weft yarn is subjected to the caulking treatment, so that in the first bonding process, the weft of the first fabric can be suppressed. In addition, since the first fabric is subjected to dot caulking with the resin A after the heat and pressure treatment, the first fabric and the water repellent film are simultaneously stuck in a point, and the first fabric is also made of the thermoplastic resin B. It is bonded to the waterproof film, so the two can be firmly bonded.

In addition, in order to reliably bond the first fabric, the waterproof film, and the second fabric, the heat and pressure treatment of the second bonding process is performed after the first bonding process is performed by the heat and pressure treatment of the first bonding process to bond the first fabric and the waterproof film. It is implemented as appropriate.

Further, the melting point of the first bonding process of the thermoplastic resin B for bonding the first fabric and the water repellent film is lower than the melting point of the first resin or the second resin used for the caulking treatment. °C~40°C is ideal.

If the difference between the melting points of the two is within such a range, the weft of the first fabric can be further suppressed in the first work, and the first fabric and the waterproof film can be firmly bonded.

Further, in the second bonding process, the thermoplastic resin C is used as a point. A second bond and a waterproof film are ideal. When both are bonded in this way, a laminate excellent in flexibility and moisture permeability can be obtained.

Further, in the first bonding process, it is preferable that the first fabric and the water-repellent film are adhered in a dot shape by using the resin A and the thermoplastic resin B. When both are bonded in this way, a laminate excellent in flexibility and moisture permeability can be obtained.

In this case, the first resin or the second resin used in the caulking treatment of the first fabric, and the bonding of the first fabric and the water repellent film before the heat and pressure treatment of the first bonding process are performed The particle diameter of the thermoplastic resin B to be used is 0.1 mm to 2.0 mm.

Further, in the laminate after the heat-and-pressure treatment of the first bonding process and the second bonding process, it is suitable to bond the first fabric and the waterproof film in the following manner: in the first fabric and waterproof Between the films, the ratio of the ratio of the resin A per unit area of the first fabric is 1% to 20%, and between the first fabric and the water repellent film, the thermoplastic resin B is in the water repellent film. The proportion of the ratio per unit area is 5% to 60%.

In addition to the resin A, the first fabric and the water-repellent film are bonded to each other in a point-like manner by the thermoplastic resin B, and the adhesion between the first fabric and the water-repellent film and the flexibility of the laminate can be sufficiently achieved. Further, a laminate having moisture permeability can be obtained, and as long as it is a particle diameter at a point within the above range and an occupation ratio of a binder resin, flexibility and moisture permeability can be further improved.

According to the present invention, it is possible to provide a weft occurrence in suppressing adhesion of a water-repellent film and a fabric, and to secure adhesion of a water-repellent film and a fabric. For the force, it is possible to achieve a lightweight laminate and a method of manufacturing the same.

Embodiments of the present invention will now be described with reference to the accompanying drawings. In addition, the same or corresponding elements are designated by the same reference numerals, and the repeated description thereof will be omitted. The dimensional ratios of the drawings do not necessarily coincide with the dimensions indicated.

Fig. 1 is a schematic cross-sectional view showing a laminate of an embodiment of the present invention in an enlarged manner. The laminate 1 shown in Fig. 1 includes a lining material (first fabric) 2, a fabric (second fabric) 3, and a waterproof moisture permeable film (waterproof film) 4. The laminate 1 can be used, for example, as a fabric such as a windbreaker or a raincoat, and the waterproof moisture-permeable film 4 is interposed between the lining 2 and the fabric 3. In the laminate 1, the warp yarns and/or the weft yarns of the gusset 2 are interstitially filled in a dot shape by the resin 5 (resin A), and the lining material 2 and the waterproof moisture permeable film 4 are stuck in a point shape. Further, the resin 6 (resin B) of the thermoplastic resin may be a point-like adhesive lining 2 and a waterproof moisture permeable film 4. Further, the resin 8 (resin C) using a thermoplastic resin is a point-like bonded fabric 3 and a waterproof moisture-permeable film 4.

Fig. 2 is a schematic plan view showing, in an enlarged manner, a lining material in a laminate according to an embodiment of the present invention. The gusset 2 is composed of warp yarns 21 and weft yarns 22 and is a thin fabric having a mass per unit area of 3 g/m ² to 30 g/m ² . The lining 2 is preferably a mass per unit area of 5 g/m ² to 25 g/m ² . The woven structure constituting the gusset 2 may be any form of plain weave, twill weave, satin weave, etc., but the lining 2 is preferably a plain weave from the viewpoint of preventing occurrence of weft of the woven fabric. In Fig. 2, a lining 2 in which the woven fabric structure is a plain weave is shown. Further, in the lining 2, the warp yarns 21 and/or the weft yarns 22 are caulked by the resin 5.

The yarn count of the warp yarn 21 of the woven fabric 2 and the yarn count of the weft yarn 22 are preferably 5 to 20 dtex, and the warp yarns 21 and the weft yarns 22 of the lining material 2 have a density of 50 to 150 strips/25.4 mm, respectively. Ideally, the sum of the density of the warp yarn 21 and the density of the weft yarn 22 is 120 to 200 strips / 25.4 mm (1 inch). Further, the cloth cover factor formed by the warp yarn 21 and the weft yarn 22 is preferably 400 to 800, more preferably 500 to 680, and most preferably 550 to 650. In addition, the cloth cover factor can be obtained by [the warp yarn count (dtex)] ^1/2 × [warp yarn density (bar/25.4 mm)] + [weft yarn count (dtex)] ^1/2 × [Density of the weft (bar/25.4 mm)] is obtained.

As the material of the warp yarn 21 and the weft yarn 22 of the gusset 2, for example, polyester, nylon, acrylic, or the like can be used.

Fabric 3 can be applied to the fabric used in general fabrics. The mass per unit area of the fabric 3 is preferably from 20 g/m ² to 200 g/m ² , more preferably from 25 g/m ² to 100 g/m ² .

The waterproof moisture-permeable film 4 is a film having water repellency and moisture permeability. The waterproof moisture-permeable film 4 can prevent, for example, rainwater from entering the surface and allowing water vapor to permeate.

As the waterproof moisture-permeable film 4, a porous film made of a hydrophilic resin film or a hydrophobic resin can be used. The hydrophilic resin film may, for example, be a polyurethane resin, a polyester resin, an anthrone resin or a polyvinyl alcohol resin. Examples of the porous film made of a hydrophobic resin include a fluorine-containing resin and a water-repellent treated polyamine group. Acid ethyl ester resin, etc. The waterproof moisture-permeable film 4 is preferably a porous film made of a fluorine-containing resin, and particularly preferably a porous polytetrafluoroethylene (PTFE) film.

It is preferable that the occupation ratio A of the resin 5 is between 1% and 20% between the layers of the lining 2 and the waterproof moisture permeable film 4, and between the lining 2 and the layer of the waterproof moisture permeable film 4, the resin 6 The occupation rate B is ideal from 5% to 60%. Here, the occupancy ratio A of the resin 5 is the area ratio of the resin 5 per unit area of the lining 2 (the occupancy ratio A = the area occupied by the resin 5 / the area of the gusset 2). The occupation ratio B of the resin 6 is the area ratio of the resin 6 per unit area of the waterproof moisture-permeable film 4 (the occupancy ratio B = the area occupied by the resin 6 / the area of the waterproof moisture-permeable film 4). Between the layers of the lining 2 and the waterproof moisture permeable film 4, the resin 5 overlaps with a part of the resin 6.

In addition, even if the occupation ratio A is the area ratio of the resin 5 per unit area of the waterproof moisture-permeable film 4, the ratio of the area occupied by the resin 6 per unit area of the aging material B is the same. However, according to the method described above, it is easy to confirm the occupancy rate.

When the occupation ratio of the resin 5 and the resin 6 is within the above range, the laminate 1 having excellent adhesion to the lining material 2 and the waterproof moisture permeable film 4 and having excellent flexibility and moisture permeability can be obtained.

Further, between the fabric 3 and the layer of the waterproof moisture-permeable film 4, the occupation ratio C of the resin 8 is preferably 5% to 60%. Here, the occupancy ratio C of the resin 8 is the area ratio of the resin 8 per unit area of the waterproof moisture-permeable film 4 (occupancy ratio C = area occupied by the resin 8 / waterproof moisture-permeable film) 4 area).

When the occupation ratio of the resin 8 is within this range, the laminate 1 which is excellent in the adhesiveness of the fabric 3 and the waterproof moisture-permeable film 4 and which is more excellent in flexibility and moisture permeability can be obtained.

In addition, the resin 5, the resin 6, and the resin 8 will be described in the following description of the method for producing a laminate of the embodiment of the present invention.

Next, a method of producing a laminate of an embodiment of the present invention will be described.

3 is a schematic view showing a method of manufacturing a laminate according to another embodiment of the present invention. Fig. 3(a) is a view showing the heat and pressure treatment in the first bonding process, and Fig. 3(b) is a view showing the heat and pressure treatment in the second bonding process. In this way, the heat and pressure treatment of the first bonding process is performed, the lining material 2 and the waterproof moisture permeable film 4 are bonded, and after the heat and pressure treatment of the first bonding process is performed, the heating and pressure treatment of the second bonding process is performed. The fabric 3 and the waterproof moisture permeable film 4 are bonded.

The lining 2 before the heat and pressure treatment of the first bonding process is interstitially treated by the resin (a) 51. The resin (a) 51 is an unhardened or semi-hardened thermosetting resin (first resin) or a thermoplastic resin (second resin). Further, the melting point of the resin (a) 51 is from 80 ° C to 160 ° C. Here, in the present invention, the melting point is the highest temperature of the endothermic peak observed by thermal analysis such as DSC.

From the viewpoint of work efficiency of the caulking treatment of the lining material 2, the resin (a) 51 is preferably a thermoplastic resin, and further, from the lining 2 and waterproof. The resin (a) 51 is a thermoplastic resin crosslinked by heating from the viewpoint of the adhesion of the moisture permeable film 4 . As such a resin, a crosslinked acrylic resin or the like can be given.

For example, the aqueous phase liquid containing the resin (a) 51 is transferred to the surface of the lining 2 in a dot shape via screen transfer, and dried or naturally dried at a temperature at which the resin (a) 51 does not deteriorate. The lining 2 is caulked beforehand. The surface of the transfer resin (a) 51 is a surface on the side to which the waterproof moisture-permeable film 4 is bonded. The lining 2 is a movement of the warp yarn 21 and the weft yarn 22 of the lining 2 by the resin (a) 51, and the latitude of the lining 2 can be prevented before the first bonding work to be bonded to the waterproof moisture permeable film 4 oblique.

Further, the resin (a) 51 which is transferred in a fine particle form (dot shape) and adhered to the surface of the lining 2, and is transferred and attached to the waterproof moisture permeable film 4 or the lining 2 described later. The resin (b) 61 and the attached shape of the resin (c) 81 transferred and adhered to the waterproof moisture-permeable film 4 or the fabric 3 are collectively referred to as dots. Further, the diameter of a circle having an area corresponding to the area of the point is referred to as a particle diameter. The particle diameter can be obtained from the area measured by the image of the point photographed by the microscope.

The resin 5 before the heat and pressure treatment of the first bonding process, that is, the particle diameter of the resin (a) 51 used for the caulking treatment is preferably 0.1 mm to 2.0 mm, more preferably 0.15 to 1.0 mm. Further, the number of dots per unit area of the resin (a) 51 used for the caulking treatment is preferably 60 to 400 per square centimeter of the gusset 2, and more preferably 100 to 300.

If the number and particle diameter of the dots of the resin (a) 51 are within the above range, The lining 2 can be surely interposed, and the lining 2 and the waterproof moisture permeable film 4 are also improved in adhesion, and the flexibility and moisture permeability of the layer 1 can be balanced.

In the first bonding process, the resin (b) 61 is transferred onto at least one of the lining 2 and the waterproof moisture permeable film 4. It is preferable to transfer the resin (b) 61 to the waterproof moisture-permeable film 4 from the viewpoint of workability.

In the transfer of the resin (b) 61, the powder or the resin (b) 61 in a molten state is transferred to the waterproof moisture-permeable film 4 in a dot shape by gravure printing or the like. Between the lining 2 and the layer of the waterproof moisture permeable film 4, the number of dots per unit area of the resin (b) 61 is preferably 60 to 400 per square centimeter of the waterproof moisture permeable film 4. 70 to 200 are more ideal.

Further, the resin 6 before the heat-and-pressure treatment of the first bonding process, that is, the particle diameter of the resin (b) 61 is preferably 0.1 mm to 2.0 mm, more preferably 0.5 mm to 1.5 mm. When the number of the dots and the particle diameter of the resin (b) 61 are within this range, the adhesiveness of the lining material 2 and the waterproof moisture permeable film 4 and the flexibility of the laminated body 1 can be achieved.

Further, in the first bonding process, the resin (b) 61 may be transferred without dots. That is, in the first bonding process, the resin (b) 61 may be transferred to the entire surface of at least one of the lining 2 and the waterproof moisture permeable film 4. Further, the resin (b) 61 may be applied to at least one of the lining 2 and the waterproof moisture permeable film 4.

The resin (b) 61 is usually a thermoplastic resin used as a hot-melt adhesive such as acrylic or urethane. Resin (b) 61 is also available It is a thermoplastic resin partially crosslinked by moisture absorption or heating.

The melting point of the resin (b) 61 is preferably 60 ° C to 150 ° C, and more preferably 70 ° C to 140 ° C.

Further, it is preferably 5 to 40 ° C lower than the melting point of the resin (a) 51 used for the caulking treatment of the gusset 2 .

When the difference between the melting points of the resin (a) 51 and the resin (b) 61 is 5 ° C or less, the occurrence of the weft may not be sufficiently prevented in the first bonding process. In the case where the difference between the melting points of the resin (a) 51 and the resin (b) 61 exceeds 40 ° C, the adhesive strength of the lining 2 and the waterproof moisture permeable film 4 produced by the resin 5 is lowered.

In the first bonding process, after the resin (b) 61 is transferred onto the lining 2 and/or the waterproof moisture permeable film 4, the lining 2 and the waterproof moisture permeable film 4 are subjected to heat and pressure treatment. The heat and pressure treatment is carried out by a roll press type press 7 or the like.

The heating and pressurizing treatment conditions are preferably carried out by heating at a temperature exceeding the melting point of the resin (b) 61 and the melting point (melting temperature) of the resin (a) 51. Although it differs depending on the kind of the resin (a) 51 and the resin (b) 61, it is preferable to heat normally at 80 to 110 degreeC. The pressure of the pressurization in the heat and pressure treatment is preferably 0.01 MPa to 2.0 MPa. By the heat and pressure treatment, if the resin (a) 51 is an uncured or semi-hardened thermosetting resin (first resin), it is thermally cured, and if it is a thermoplastic resin (second resin), it is carried out depending on the case. In the state in which at least one of the warp yarn and the weft yarn of the gusset 2 is interstitial, the lining 2 and the waterproof moisture permeable film 4 are bonded together. Further, by the heat and pressure treatment, The resin (b) 61 is melted, and as the resin 6, the lining 2 and the waterproof moisture permeable film 4 are bonded.

Here, if the melting point of the resin (a) 51 is higher than the melting point of the resin (b) 61, the warp of the lining 2 can be sufficiently used by the resin (a) 51 even at the temperature at which the resin (b) 61 is melted. And/or weft interstitial, so that weft slanting of the lining 2 in the first bonding process can be sufficiently suppressed. Further, if the melting point of the resin (a) 51 is 5 to 40 ° C higher than the melting point of the resin (b) 61, the bonding force between the lining 2 and the waterproof moisture permeable film 4 produced by the resin 5 can be improved.

In the second bonding process, the resin (c) 81 is transferred in a dot shape to at least one of the fabric 3 and the waterproof moisture permeable film 4. It is preferable to transfer the resin (c) 81 to the waterproof moisture-permeable film 4 from the viewpoint of workability. The transfer of the resin (c) 81 is carried out by transferring the powder or the molten resin (c) 81 in a dot shape onto the waterproof moisture-permeable film 4 by gravure printing or the like.

Between the layers of the fabric 3 and the waterproof moisture-permeable film 4, the number of dots of the resin (c) 81 per unit area of the waterproof moisture-permeable film 4 is 60 pieces per square centimeter of the waterproof moisture-permeable film 4 400 are ideal, 70 to 200 are more ideal. The particle size of the dots is ideal from 0.1 mm to 2.0 mm, and 0.5 to 1.5 mm is more desirable. When the number of the dots of the resin (c) 81 and the particle diameter are within this range, the adhesion between the fabric 3 and the waterproof moisture-permeable film 4 and the flexibility of the laminate 1 can be achieved.

Further, in the second bonding process, the resin (c) may not be transferred in a dot shape. That is, in the second bonding process, in the fabric 3 and waterproof and moisture permeable At least one of the flexible films 4 transfers the resin (c) 81 over the entire surface. Further, the resin (c) may be applied to at least one of the fabric 3 and the waterproof moisture-permeable film 4.

The resin (c) 81 is usually a thermoplastic resin used as a hot-melt adhesive such as an acrylic or urethane. The resin (c) 81 may also be a thermoplastic resin partially crosslinked by moisture absorption or heating.

Further, the melting point of the resin (c) 81 before the heat and pressure treatment is preferably 60 ° C to 150 ° C, and more preferably 70 ° C to 140 ° C.

After the resin (c) 81 is transferred onto the fabric 3 and the waterproof moisture-permeable film 4, the fabric 3 and the waterproof moisture-permeable film 4 are subjected to heat and pressure treatment. The heat and pressure treatment is carried out by a roll press type press 7 or the like.

The heating and pressurizing treatment conditions are preferably carried out at a temperature exceeding the melting point of the resin (c) 81, and it is usually heated at a temperature of 80 to 110 ° C. The pressure to be pressurized in the heat and pressure treatment is preferably 0.01 MPa to 2.0 MPa. By this heat and pressure treatment, the resin (c) 81 is melted, and a part of the resin is crosslinked after being melted, and the fabric 3 and the waterproof moisture-permeable film 4 are bonded as the resin 8.

The resin (c) 81 used in the second bonding process may be the same as or different from the resin (b) 61 used in the first bonding process, but the same resin is preferable from the viewpoint of workability. Further, if the number of dots and the particle diameter are also the same, the workability is further improved.

The conditions of the heat and pressure treatment may be the same as or different from the conditions of the heat and pressure treatment of the first bonding process.

In addition, the tree for interstitial treatment of the lining 2 in the first bonding process The particle size of the grease (a) 51 does not change much after the heat treatment process in the first bonding process and the second bonding process, and only becomes 0 to 5%. Further, the particle diameter of the resin (b) 61 transferred to the waterproof moisture-permeable film 4 in the first bonding process, and the resin transferred onto the waterproof moisture-permeable film 4 in the second bonding process ( The particle size of c) 81 is increased by 0 to 50% after the first bonding process and the second bonding process are heated and pressurized.

The present invention has been specifically described above based on the embodiments thereof, but the present invention is not limited to the above embodiments. For example, in FIGS. 3(a) and 3(b), the resin (b) 61 and the resin (c) 81 are transferred onto the waterproof moisture-permeable film 4, but may be transferred onto the lining 2 or the fabric 3. . In addition, after the second bonding process is performed, the first bonding process may be performed, or the heating process of the first bonding process and the second bonding process may be simultaneously performed as shown in FIG. 4 . 4 is a schematic view showing a method of manufacturing a laminate according to an embodiment of the present invention. The method of manufacturing the laminated body 1 of the present embodiment includes: a first bonding process in which the lining material 2 is made by the point-like resin 5 and the dot-shaped resin 6 by performing heat and pressure treatment. The waterproofing and moisture permeable film 4 is bonded to the waterproof and moisture permeable film 4, and the second bonding process is performed by applying heat and pressure treatment to bond the fabric 3 and the waterproof moisture permeable film 4 with the dot resin 8. In FIG. 4, the case where the heating and pressurizing process in the first bonding process and the heating and pressurizing process in the second bonding process are simultaneously performed is shown.

Fig. 5 is a schematic cross-sectional view showing a laminate of a second embodiment of the present invention in an enlarged manner. In the laminate 1 shown in Fig. 1, it means that in addition to the resin In addition to the fifth, the resin 6 is adhered in a dot shape between the lining material 2 and the waterproof moisture permeable film 4, but it may be formed between the lining material 2 and the waterproof moisture permeable film 4 over the entire surface. In the laminated body 1 (see FIG. 5) of the adhesive layer formed of the resin 6, the adhesive layer may be formed almost entirely on the entire surface. That is, the occupancy B can be 60% to 100%. In this case, the resin 6 is preferably a polyurethane-permeable hot-melt resin composition having moisture permeability. A layered body in which a binder layer composed of the resin 6 is formed on the entire surface and a binder layer composed of the resin 8 is formed in a dot shape may be used.

Further, in the laminate 1 shown in FIG. 1, the resin 8 is in a point-like bonding between the fabric 3 and the waterproof moisture-permeable film 4, but it may be in the fabric 3 and the waterproof moisture-permeable film 4. A bonding layer made of a resin 8 (see FIG. 5) is formed on the entire surface, and a laminate in which a bonding layer is formed on almost the entire surface may be used. That is, the occupancy rate C is 60% to 100%. In this case, the resin 8 is preferably a polyurethane-based hot-melt resin composition having moisture permeability. A laminate in which a binder layer formed of the resin 8 is formed on the entire surface and a binder layer composed of the resin 6 is formed in a dot shape may be used.

Here, the resin 6 and the resin 8 may be the same resin component or different resin components.

Further, the mass of the resin 5 is preferably 0.5 g/m ² to 20 g/m ² , and the mass of the resin 6 and the mass of the resin 8 are preferably 5 g/m ² to 60 g/m ² .

The laminate 1 according to the embodiment of the present invention can be used, for example, as a fabric for raincoats, windbreakers, sports clothes, rain gear, tents, sleeping bags, bags, and the like.

[Example 1] (First fabric) A polyester fiber plain weave (warp yarn: 15 dtex, 101 strip/25.4 mm, weft: 15 dtex, 66 strip/25.4 mm) having a mass of 15 g/m ² was used as the first fabric.

(Interstitial treatment of the first fabric) An acrylic resin having a melting point of 110 ° C was screen-transferred as an aqueous phase of the resin (a) onto the first fabric, dried naturally, and subjected to caulking treatment.

The number of dots of the acrylic resin was 250 / cm ² and the average particle diameter was 0.2 mm. In addition, the mass of the resin (a) is 2 g/m ²

(Second fabric) A polyester fiber plain weave having a mass of 40 g/m ² was used as the second fabric.

(Waterproof Film) A porous polytetrafluoroethylene (PTFE) film having a thickness of 50 μm was used as a water repellent film.

(first bonding project)

A molten urethane-based hot-melt adhesive (melting point: 80 ° C) was used as the resin (b), and gravure printing was transferred onto the water-repellent film.

The number of dots of the resin (b) was 100 / cm ² and the average particle diameter was 0.7 mm. Further, the mass of the resin (b) was 30 g/m ² .

The first fabric and the water repellent film which were subjected to the caulking treatment on the side of the water repellent film were placed under the conditions of 120 ° C and 0.02 MPa with the resin (b) interposed therebetween. The mixture was heated and pressurized to bond the two to obtain a two-layer laminate.

(Second Bonding Project) Among the two-layer laminate obtained in the first bonding process, the same urethane-based hot-melt adhesive as the hot-melt adhesive used in the first bonding process As the resin (c), gravure printing is transferred onto the surface of the water repellent film opposite to the first fabric. The number of dots of the resin (c) was 100 / cm ² and the average particle diameter was 0.7 mm. Further, the mass of the resin (c) was 30 g/m ² .

Next, the two layers of the laminate and the second fabric were heated and pressurized under the same conditions as the heating and pressurizing treatment of the first bonding process in such a manner that the resin (c) was sandwiched therebetween, and Example 1 was obtained. The layered body.

In the obtained laminate, the occupation ratio of the resin (a) was 8% between the first fabric and the water repellent film, and the occupation ratio of the resin (b) was 50%. The occupation ratio of the resin (c) between the second fabric and the water repellent film was 50%.

[Example 2] In the first bonding process and the second bonding process, the urethane-based hot-melt adhesive (melting point 80 ° C) in the same molten state as in Example 1 was used as the resin (b) and The laminate of Example 2 was obtained in the same manner as in Example 1 except that the resin (c) was applied to the entire surface of one surface of the water-repellent film so as to be 40 g/m ² .

[Comparative Example 1] A laminate of Comparative Example 1 was obtained in the same manner as in Example except that the first fabric which was not subjected to the caulking treatment was used. The number of the dots of the resin (b) and the resin (c) and the particle diameter are the same values as in the first embodiment, and the occupation ratio of the resin (b) is 50% between the first fabric and the water repellent film. (Of course, the occupation ratio of the resin (a) is 0%). Further, the occupation ratio of the resin (c) between the second fabric and the water repellent film was 50%.

[Evaluation of Laminates] In the laminates of Example 1 and Example 2, no weft occurred at all on the first fabric, but on the laminate of Comparative Example 1, weft occurred on the first fabric. As a product, it is indeed a problem.

The laminates of each of Example 1 and Comparative Example 1 had substantially the same flexibility and texture. The flexibility of the laminate of Example 2 was practically not problematic, but it was inferior to Example 1 and Comparative Example 1.

As evaluation of the adhesion between the respective layers of the laminate, the peel strength between the first fabric and the water repellent film, and the relationship between the second fabric and the water repellent film were measured in accordance with JIS L1086 7.19.1 "Peel strength". Peel strength. The peel strength between the first fabric and the water-repellent film was 350 gf/cm in the first embodiment and 300 gf/cm in Comparative Example 1. Therefore, it can be seen that the resin (a) contributes to the bonding of the first fabric and the water repellent film. Further, in Example 2, it was 450 gf/cm.

With respect to the peel strength between the second fabric and the water repellent film of Example 1 and Example 2 and Comparative Example 1, the material of the water repellent film was broken and could not be measured. However, it was judged that the adhesive strength was sufficient.

Further, after the heat and pressure treatment of the first bonding process, the melting point of the resin (a) could not be accurately measured, and it was confirmed that the resin (a) was partially crosslinked. In addition, the urethane-based hot-melt adhesive used as the resin (b) or the resin (c) does not have a large change in melting point immediately after the production of the laminate, but the laminate is produced for one week. After that, the melting point can be accurately confirmed, and it can be confirmed that crosslinking has occurred. This is considered to be because the urethane-based hot-melt adhesive used is a moisture-curing type hot-melt adhesive.

1‧‧‧Layer

8‧‧‧Resin C

6‧‧‧Resin B

5‧‧‧Resin A

3‧‧‧ Fabrics (Second Cloth)

4‧‧‧Waterproof and moisture permeable film (waterproof film)

2‧‧‧ lining (first cloth)

21‧‧‧ warp yarn

22‧‧‧ Weft

7‧‧‧ Roller type press

7A‧‧‧ Roller type press

61‧‧‧Resin

51‧‧‧Resin

7B‧‧‧ Roller type press

81‧‧‧Resin

Figure 1 is an enlarged view of a laminate according to an embodiment of the present invention A schematic cross-sectional view.

Fig. 2 is a schematic plan view showing, in an enlarged manner, a lining (first fabric) of a laminate according to an embodiment of the present invention.

Fig. 3 is a schematic view showing a method of manufacturing a laminate according to an embodiment of the present invention.

Fig. 4 is a schematic view showing a method of manufacturing a laminate according to another embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view showing, in an enlarged manner, a laminate according to a second embodiment of the present invention.

1‧‧‧Layer

8‧‧‧Resin C

3‧‧‧Second cloth

4‧‧‧Waterproof film

6‧‧‧Resin B

2‧‧‧First Cloth

5‧‧‧Resin A

Claims (11)

A laminate in which a water repellent film is interposed between a first fabric and a second fabric, wherein the first fabric has a mass per unit area of 3 g/m ² to 30 g/m ^{2 .} In the woven fabric, at least one of the warp yarn and the weft yarn of the first fabric is a resin obtained by curing a first resin or a resin obtained by crosslinking a second resin or a second resin. A is a dot-like interstitial, the first fabric and the water-repellent film are bonded by the gap-filled resin A and the thermoplastic resin B, and the second fabric and the water-repellent film are bonded by a thermoplastic resin C, the first resin It is an uncured or semi-hardened thermosetting resin having a melting point of 80 ° C to 160 ° C, and the second resin is a thermoplastic resin having a melting point of 80 ° C to 160 ° C. The laminate according to the first aspect of the invention, wherein the second fabric and the water repellent film are bonded in a dot shape by the thermoplastic resin C. The laminate according to the first or second aspect of the invention, wherein the first fabric and the water repellent film are adhered in a dot shape by the resin A and the thermoplastic resin B. The laminate according to the third aspect of the invention, wherein the resin A is present between the first fabric and the water repellent film. The ratio of the ratio per unit area of the first fabric is 1% to 20%, and the thermoplastic resin B is on the unit area of the water repellent film between the first fabric and the water repellent film. The proportion of the proportion is 5% to 60%. A method for producing a laminate, which is a method for producing a laminate in which a water repellent film is interposed between a first fabric and a second fabric, characterized in that: a first bonding process and a second bonding process are provided, The first bonding process is a first resin which is an uncured or semi-hardened thermosetting resin having a melting point of 80 ° C to 160 ° C or a second resin which is a thermoplastic resin having a melting point of 80 ° C to 160 ° C. Any one of the resin in which at least one of the warp yarn and the weft yarn is subjected to heat and pressure treatment in a point-like manner, and the resin is cured by the first resin or the first Any one of the resin obtained by crosslinking the two resins or the second resin and the thermoplastic resin B are bonded, and the first fabric is a total mass of the warp yarn and the weft yarn per unit area of 3 g/ m ² ~ 30g / m ² of fabric, the second adhesive works, is the second fabric and the waterproof membrane heat and pressure treatment, using the thermoplastic resin to be C bond, the first bonding station Melting point of the thermoplastic resin B before embodiment of the heating and pressing treatment is 60 ℃ ~ 150 ℃. The method for producing a laminate according to the fifth aspect of the invention, wherein the first fabric and the water-repellent film are bonded together by performing the heat and pressure treatment of the first bonding process, and then performing the second Heat and pressure treatment of the bonding process. The method for producing a laminate according to the fifth or sixth aspect of the invention, wherein the thermoplastic resin B used for bonding the first fabric and the water repellent film is subjected to heat and pressure in the first bonding process. The melting point before the treatment is 5 ° C to 40 ° C lower than the melting point of the first resin or the second resin used for the aforementioned gap filling treatment. In the second bonding process, the second fabric and the water repellent film are adhered in a dot shape by the thermoplastic resin C, in the method of producing a laminate according to the fifth aspect of the invention. The method for producing a laminate according to the fifth aspect of the invention, wherein the first fabric and the water-repellent film are used in the first bonding process by the resin A and the thermoplastic resin B. Make a point bond. The method for producing a laminate according to claim 9, wherein the first resin or the first layer used for the interstitial treatment of the first fabric before the heat and pressure treatment of the first bonding process is performed The particle diameter of the point of the two resins and the thermoplastic resin B is from 0.1 mm to 2.0 mm. The method for producing a laminate according to claim 9, wherein after the first bonding process and the water repellent film are performed, the first bonding process and the second bonding process are performed after the heating and pressurizing treatment The ratio of the ratio of the resin A in the unit area of the first fabric is 1% to 20%, Between the first fabric and the water-repellent film, the first fabric and the first fabric are bonded so that the ratio of the ratio of the thermoplastic resin B per unit area of the water-repellent film is 5% to 60%. The aforementioned waterproof film.