JP2016124170A - Fiber laminate and method for producing fiber laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fiber laminate having high moisture permeability which is suitably used, for example, as an instep material of sport shoes while securing the degree of freedom for imparting designability and to provide a method for producing the same.SOLUTION: There is provided a fiber laminate which has a nonwoven fabric which is an entangled body of microfine fibers, a mesh material and an adhesive layer for adhering the nonwoven fabric to the mesh material, where the adhesive layer has a plurality of pores having a pore diameter of 1 to 2.5 mm and the total area ratio of the pores is 1 to 4% with respect to the whole surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fiber laminate that is preferably used as a skin material for sports shoes and a method for producing the same.

  2. Description of the Related Art A fiber laminate in which a mesh material is bonded to a nonwoven fabric base material with an adhesive is known as a shell material for sports shoes such as running shoes.

  For example, Patent Document 1 below discloses a mesh-like base material, which is formed by laminating a heat-adhesive resin layer on the back surface of a skin material such as artificial leather, suede-like woven fabric, suede-like knitted fabric, and synthetic leather. The laminated body formed by carrying out the thermocompression bonding of the laminated intermediate body which laminated | stacked the material is disclosed.

  The thermal adhesive resin layer of the laminate as described above has low moisture permeability. Therefore, when the laminated body is used as it is as the upper material of sports shoes, there is a problem that the wearer's feet are damp and the wearer is uncomfortable. In order to reduce such an unpleasant feeling, a plurality of through-holes 14 as shown in FIG. 3 are provided on the upper of a sports shoe in which a conventional mesh material 12 is bonded to a nonwoven fabric base 11 with an adhesive 13. It was partially formed. By providing such a through-hole partially, moisture permeability is maintained and the discomfort caused by foot stuffiness is reduced. However, in the case where such partially provided through holes are responsible for the overall moisture permeability, the hole diameter needs to be relatively large, so the degree of freedom of designability is reduced and the design is greatly reduced. There was a problem to do.

  Patent Document 2 below is a laminated fabric obtained by laminating a nonwoven fabric web composed of fibers having a diameter of less than 1 μm on at least one side of a fabric as a laminated fabric having moisture permeability and waterproofness with an adhesive. Or a laminated fabric in which an adhesive is applied and adhered in a linear or lattice form.

JP 2011-117104 A JP 2010-030289 A

  In the case of a laminated fabric as disclosed in Patent Document 2, moisture permeability is ensured by applying a liquid adhesive in a dot shape, a linear shape or a lattice shape to adhere the fabric and the nonwoven fabric web. When the fabric and the nonwoven fabric web are bonded with a liquid adhesive in this way, it is difficult to accurately control the diameter of the holes in order to apply the adhesive in the form of dots, lines or lattices. . That is, for example, even if the adhesive is applied so as to leave a small-diameter hole, it is difficult to maintain sufficient peel strength if the pressure-bonding force during bonding is too low, and the pressure-bonding force is too high. Makes it difficult for the adhesive to stretch and maintain the holes evenly over the entire surface, forming a part where the holes disappeared, a part with a large hole diameter, etc., and maintaining the adhesive strength and moisture permeability uniformly over the entire surface It was difficult. Therefore, when applying a liquid adhesive in a dot shape, a linear shape, or a lattice shape as disclosed in Patent Document 2 to ensure moisture permeability, it is impossible to form fine holes uniformly. It was.

  An object of this invention is to provide the fiber laminated body which has high moisture permeability, and its manufacturing method, ensuring the freedom degree of the provision of the design property preferably used, for example as a shell material of sports shoes, for example.

  One aspect of the present invention includes a nonwoven fabric that is an entangled body of ultrafine fibers, a mesh material, and an adhesive layer that bonds the nonwoven fabric and the mesh material, and the adhesive layer has a plurality of holes having a pore diameter of 1 to 2.5 mm. And it is a fiber laminated body whose total area ratio of a hole is 1-4% with respect to the whole surface. Such a fiber laminate can maintain high moisture permeability because fine holes are formed in the adhesive layer. In addition, since the large holes do not appear in the appearance, the appearance design is not impaired. Furthermore, since the total area ratio is 1 to 4%, moisture permeability can be maintained without significantly reducing the peel strength. Such a fiber laminate is preferably used as a shell material for sports shoes.

Further, when the number density of the holes is 0.1 to 7 pieces / cm ² is preferable from the viewpoint of the texture is soft.

In addition, the fiber laminate has a water vapor transmission rate of 0.3 mL / cm ² / sec or more. When used as a shell material for sports shoes, the moisture of the foot is sufficiently suppressed while suppressing water penetration. It is preferable from the point which can be performed.

  In addition, when the peel strength between the nonwoven fabric and the mesh material is 3 kg / 2.54 cm (1 inch) or more, it is preferable from the viewpoint that sufficient durability can be maintained when used as the upper material of sports shoes.

  The adhesive layer includes a first surface layer mixed with a nonwoven fabric, a second surface layer mixed with a mesh material, and an intermediate layer having a thickness of 10 to 35 μm interposed between the first surface layer and the second surface layer. Is preferable from the viewpoint of particularly high peel strength.

  In addition, it is preferable that the adhesive layer is derived from a thermoplastic polyurethane sheet from the viewpoint of excellent moisture permeability and soft texture required as a shell material for sports shoes.

  Another aspect of the present invention is to form a laminated intermediate in which a nonwoven fabric that is an entangled body of ultrafine fibers, a mesh material, and a thermal adhesive resin sheet interposed between the nonwoven fabric and the mesh material are stacked. And a step of forming a laminated body by hot pressing the laminated intermediate, and the heat-adhesive resin sheet has a plurality of holes having a hole diameter of 1 to 2.5 mm, and the entire surface thereof It is a manufacturing method of the fiber laminated body whose total area ratio of a hole is 1-4%. According to such a manufacturing method, it is possible to manufacture a fiber laminate that is preferably used as a shell material for sports shoes in a state where fine holes are held in the adhesive layer.

  ADVANTAGE OF THE INVENTION According to this invention, the fiber laminated body which has high moisture permeability can be obtained, ensuring the freedom degree of provision of design property.

FIG. 1 is a schematic cross-sectional view of a fiber laminate 10 of the present embodiment. FIG. 2 is a schematic diagram showing a layer configuration of the laminated intermediate body 20 of the present embodiment. FIG. 3 is a schematic diagram for explaining a plurality of through holes partially formed in a shell material of a conventional sports shoe.

  One embodiment of the fiber laminate according to the present invention will be described below. FIG. 1 is a schematic cross-sectional view of a fiber laminate 10 of the present embodiment. In FIG. 1, 1 is a non-woven fabric (hereinafter also simply referred to as non-woven fabric) in which ultrafine fibers are entangled, 2 is a mesh material, and 3 is an adhesive layer that bonds the non-woven fabric 1 and the mesh material 2. And the contact bonding layer 3 is a fiber laminated body which has the some hole 4 with a hole diameter of 1-2 mm, and the total area ratio of the hole 4 is 1-4% with respect to the whole surface. The adhesive layer is preferably a first surface layer 3c submerged and mixed in the nonwoven fabric 1, a second surface layer 3b submerged and mixed in the mesh material 2, and the first surface layer and the second surface layer. And an intermediate layer 3a having a thickness of 10 to 35 μm interposed therebetween.

  As shown in FIG. 2, the fiber laminate of the present embodiment is interposed between the nonwoven fabric 1, the mesh material 2, the nonwoven fabric 1 and the mesh material 2, and has a pore diameter of 1 to 2.5 mm with respect to the entire surface. A step of forming a laminated intermediate 20 having a plurality of holes 4 and a heat-adhesive resin sheet 3 having a total area ratio of 1 to 4% of the holes 4 with respect to the entire surface; The process of forming the fiber laminated body 10 by carrying out the hot press of 20 is manufactured by a manufacturing method provided with. Hereinafter, the fiber laminated body of this embodiment is demonstrated in detail along an example of the specific manufacturing method.

  In the manufacturing method of the fiber laminate of the present embodiment, the nonwoven fabric, the mesh material, and the whole surface have a plurality of holes having a hole diameter of 1 to 2.5 mm, and the total area ratio of the holes is 1 to A 4% thermal adhesive resin sheet is prepared.

  The nonwoven fabric is a nonwoven fabric that is an entangled body of ultrafine fibers having a fiber diameter of 1 dtex or less. Such a non-woven fabric of ultrafine fibers has high fiber density, and thus maintains high adhesion to the adhesive layer. Therefore, high peel strength can be maintained. Such a non-woven fabric is produced, for example, by manufacturing a web of ultrafine fibers such as sea-island type composite fibers, and entangles a plurality of obtained fiber webs, and if necessary, causes heat and heat shrinkage or a high-strength material such as polyurethane. It is obtained by a process of impregnating and imparting a molecular elastic body, and further converting ultrafine fibers into ultrafine fibers.

  The fiber diameter of the ultrafine fiber is 1 dtex or less, preferably 0.01 to 0.9 dtex, more preferably 0.05 to 0.5 dtex, and particularly preferably 0.07 to 0.1 dtex.

  The resin that forms the ultrafine fibers is not particularly limited. Specific examples thereof include, for example, polyester resins such as polyethylene terephthalate (PET), polytrimethylene terephthalate, polybutylene terephthalate (PBT), and polyester elastomer; polyamide 6, polyamide 66, polyamide 610, aromatic polyamide, polyamide elastomer, and the like. A resin having fiber-forming ability such as an acrylic resin or an olefin resin. These may be used alone or in combination of two or more. Among these, PET is preferable from the viewpoint of excellent wear resistance.

  The ultrafine fiber containing PET is particularly an ultrafine fiber obtained by removing a sea component from a sea-island type composite fiber containing water-soluble polyvinyl alcohol (PVA) as a sea component and an island component as PET. preferable. Such ultrafine fibers containing PET have a PVA film that cannot be completely removed from the surface of the PET fibers. PVA is excellent in hydrophilicity. Therefore, when the fiber laminate of the present embodiment is used as a shell material for sports shoes, the moisture generated from the foot is caused by the contact of the non-woven fabric of ultrafine fibers having such a PVA film on the side in contact with the foot. Immediately absorbed into the nonwoven fabric. And the absorbed moisture permeate | transmits the hole of an contact bonding layer, and is discharge | released outside, Therefore Water absorption quick-drying property can be hold | maintained. On the other hand, since the mesh material is arranged on the outer side not in contact with the foot, the water from the outside is not easily absorbed directly into the nonwoven fabric. Therefore, when a fiber laminate using a non-woven fabric of ultrafine fibers obtained by removing sea components from sea-island composite fibers containing PVA as a sea component and island components as PET is used as a shell material for sports shoes, High water absorption and quick drying properties can be obtained.

  The nonwoven fabric may be impregnated with a polymer elastic body for the purpose of improving shape stability. Specific examples of such a polymer elastic body include, for example, a polyurethane elastic body, an acrylic elastic body, a polyamide elastic body such as a polyamide elastomer, a polyester elastic body such as a polyester elastomer, a polystyrene elastic body, and a polyolefin type. An elastic body etc. are mentioned. Among these, polyurethane-based elastic bodies are particularly preferable because they are excellent in flexibility and fullness.

Basis weight of the nonwoven fabric is not particularly limited, 100~1800g / m ^2, preferably further is 200~900g / m ^2. The apparent density of the nonwoven fabric is not particularly limited, but is preferably 0.45 g / cm ³ or more, and more preferably 0.45 to 0.70 g / cm ³ . Moreover, although the thickness of a nonwoven fabric is not specifically limited, For example, it is preferable that it is 0.3-3 mm, Furthermore, 0.5-2 mm, Especially 0.5-1 mm.

  The mesh material is not particularly limited as long as it is a breathable cloth such as a synthetic fiber cloth having stitches. Such a mesh material is excellent in air permeability and lightness.

  Moreover, the heat-adhesive resin sheet used for the production of the fiber laminate of the present embodiment has a plurality of pore diameters of 1 to 2.5 mm so that the total area ratio of the holes is 1 to 4% with respect to the entire surface. It has a through hole.

  As will be described later, the heat-adhesive resin sheet is a non-woven fabric when it is solidified after being softened or melted by heating in a step of hot pressing a laminated intermediate formed between a non-woven fabric and a mesh material. It is a sheet of thermoplastic resin that can bond the mesh material. Specific examples of the thermoplastic resin forming such a heat-adhesive resin sheet include, for example, a thermoplastic resin having a softening temperature of about 80 to 140 ° C, and preferably a thermoplastic polyurethane resin having a softening temperature of about 90 to 120 ° C. It is done.

  The heat-adhesive resin sheet is formed with a plurality of fine holes having a hole diameter of 1 to 2.5 mm so that the total area ratio of the holes is 1 to 4% with respect to the entire surface. When a non-woven fabric and a mesh material are bonded with such a heat-adhesive resin sheet having fine holes to form a fiber laminate, the fine holes can be maintained in the adhesive layer of the resulting fiber laminate. And, since the adhesive layer has such fine pores, moisture permeates but moisture does not easily pass through, that is, a fiber laminate that has both moisture permeability and water resistance required as a shell material for sports shoes. The body is obtained.

  The heat-adhesive resin sheet having fine holes is formed by punching a smooth heat-adhesive resin sheet with, for example, a needle having a predetermined diameter. The diameter of the hole thus formed is 1 to 2.5 mm. If the diameter of the hole is less than 1 mm, the moisture permeability is insufficient, and if the diameter of the hole exceeds 2.5 mm, liquid water can be easily passed through, resulting in a decrease in water resistance.

  The total area ratio of the holes formed in the heat-adhesive resin sheet is 1 to 4%. When the total area ratio of the holes is less than 1%, the moisture permeability when used as the upper material of the sports shoes becomes insufficient, and when the total area ratio of the holes exceeds 4%, the peel resistance decreases. At the same time, the water resistance becomes insufficient.

The number density of the holes is preferably about 0.1 to 7 holes / cm ² , more preferably about 0.3 to 5 holes / cm ² . When fine holes with such a number density exist, the texture of the adhesive layer becomes soft.

  Although the thickness of a heat bondable resin sheet is not specifically limited, It is preferable that it is about 30-200 micrometers, Furthermore, about 50-100 micrometers.

  The fiber laminate of the present embodiment is a laminated intermediate 20 including a nonwoven fabric 1 as shown in FIG. 2, a mesh material 2, and a heat-adhesive resin sheet 3 interposed between the nonwoven fabric 1 and the mesh material 2. And the laminated intermediate 20 is manufactured by hot pressing.

  The fiber laminate was formed at a predetermined temperature via a release paper as necessary after forming a laminated intermediate by laminating a nonwoven fabric, a thermal adhesive resin sheet and a mesh material in that order, for example. Manufactured by hot pressing with a heating roll or hot press. In addition, the nonwoven fabric and the thermoadhesive resin sheet may be temporarily bonded as necessary.

  The surface temperature of the heating roll or hot press is preferably set to a temperature that is about 10 to 40 ° C., more preferably about 15 to 30 ° C. higher than the softening temperature of the thermoadhesive resin sheet. When the surface temperature of the heating roll is too low, heat is not sufficiently transferred from the surface of the laminated intermediate to the heat-adhesive resin sheet, and there is a tendency that the adhesive strength becomes poor and the peel strength decreases. Moreover, when the surface temperature of a heating roll is too high, a thermoadhesive resin sheet will melt | dissolve too much, and it will become easy to make a micropore become small or lose | disappear.

  In this way, a fiber laminate is manufactured. In the fiber laminate of the present embodiment, the adhesive layer is interposed between the first surface layer mixed with the nonwoven fabric, the second surface layer mixed with the mesh material, and the first surface layer and the second surface layer. An intermediate layer having a thickness of 10 to 35 μm, more preferably 15 to 25 μm, is preferable from the viewpoint of particularly high peel strength. When the thickness of the intermediate layer is less than 10 μm, the peel strength is remarkably reduced. The peel strength between the nonwoven fabric and the mesh material is 3 kg / 2.54 cm (1 inch) or more, and 3.2 kg / 2.54 cm (1 inch) or more. Furthermore, it is preferable from the viewpoint that sufficient durability can be maintained.

The fiber laminate of the present embodiment has a moisture permeability of 0.3 mL / cm ² / sec or more, more preferably 0.5 mL / cm ² / sec or more when used as the upper material of sports shoes. It is preferable from the viewpoint that foot stuffiness can be sufficiently suppressed.

  The fiber laminate obtained in this manner is preferably used as a shell material for sports shoes.

  Hereinafter, the present invention will be described more specifically with reference to examples. In addition, this invention is not limited at all by the Example.

First, the production of the nonwoven fabric used in this example will be described.
(Manufacture of non-woven fabric)
Individually melted ethylene-modified polyvinyl alcohol as the sea component thermoplastic resin and isophthalic acid-modified polyethylene terephthalate (content of isophthalic acid unit of 6.0 mol%) having a Tg of 110 ° C as the island component thermoplastic resin. I let you. Then, each molten resin was supplied to a plurality of spinning nozzles in which a large number of nozzle holes were arranged in parallel so as to form a cross-section in which 25 island components having a uniform cross-sectional area were distributed in the sea component. . At this time, it supplied, adjusting pressure so that the mass ratio of a sea component and an island component might become sea component / island component = 25/75. And the molten fiber was discharged from the nozzle hole set to the nozzle | cap | die temperature of 260 degreeC.

The molten fiber discharged from the nozzle holes is drawn by an air jet / nozzle type suction device in which the pressure of the airflow is adjusted so that the average spinning speed is 3700 m / min, and the average fineness is 2.1 dtex. The sea-island composite long fiber was spun. The spun sea-island composite long fibers were continuously deposited on the movable net while being sucked from the back of the net. The amount of deposition was adjusted by adjusting the moving speed of the net. And in order to suppress the fuzz on the surface, the sea-island type composite long fibers deposited on the net were lightly pressed with a 42 ° C. metal roll. Then, the sea-island type composite long fibers were peeled from the net and hot-pressed by passing between a lattice-pattern metal roll having a surface temperature of 75 ° C. and a back roll. In this way, a long fiber web having a basis weight of 34 g / m ² in which the fibers on the surface were temporarily fused in a lattice shape was obtained.

Next, after spraying an oil agent mixed with an antistatic agent on the surface of the obtained long fiber web, 10 sheets of the long fiber web are overlapped using a cross wrapper device, and the total basis weight is 340 g / m ² . A web was prepared, and a needle breakage oil was sprayed. And the three-dimensional entanglement process was carried out by needle punching the overlap web. Specifically, a 6 barb needle with a distance of 3.2 mm from the needle tip to the first barb was used, and needle punching was performed alternately at 3300 punches / cm ² from both sides of the laminate at a needle depth of 8.3 mm. . The area shrinkage rate by this needle punching treatment was 68%, and the basis weight of the entangled web after needle punching was 415 g / m ² .

The resulting entangled web was densified by a wet heat shrinkage treatment as follows. Specifically, water at 18 ° C. is uniformly sprayed on the entangled web by 10% by mass, and left in a state where no tension is applied for 3 minutes in an atmosphere at a temperature of 70 ° C. and a relative humidity of 95%. The apparent fiber density was improved by heat and heat shrinkage. The area shrinkage rate by the wet heat shrinkage treatment was 45%, the basis weight of the densified entangled web was 750 g / m ² , and the apparent density was 0.52 g / cm ³ . The apparent density was adjusted to 0.60 g / cm ³ by dry-heat roll pressing to further densify the entangled web.

  Next, the densified entangled web was impregnated with the polyurethane emulsion as follows. A densified entangled web was impregnated with a water-based polyurethane emulsion (solid content concentration 30%) mainly composed of polycarbonate / ether-based polyurethane. Then, moisture was dried in a drying furnace at 150 ° C., and non-foamed polyurethane was crosslinked. A polyurethane entangled web composite having a polyurethane / entangled web mass ratio of 18/82 was thus formed.

  Next, the polyurethane entangled web composite is immersed in hot water at 95 ° C. for 20 minutes to extract and remove sea components contained in the sea-island composite long fibers, and dried in a drying furnace at 120 ° C. An intermediate sheet of a substrate having a thickness of about 1.0 mm was obtained. The obtained sheet was divided into two in the thickness direction and ground to 0.45 mm to obtain a nonwoven fabric.

The apparent density of the obtained nonwoven fabric was 0.53 g / cm ³ , and the mass ratio of nonwoven fabric / polyurethane was 78/22. Moreover, the fineness of the ultrafine fibers forming the nonwoven fabric was 0.08 dtex.

[Example 1]

A thermoplastic polyurethane sheet (softening point 105 ° C., polyether type) having a thickness of 50 μm was prepared as a thermoadhesive resin sheet. And many through-holes with a hole diameter of 1 mm were formed on the entire surface of the thermoplastic polyurethane sheet so as to have a density of 2.3 holes / cm ² . At this time, the total area ratio of the holes to the entire surface was 1.8%.

  Then, a laminated intermediate body was formed by stacking a nonwoven fabric, a mesh material, and a thermoplastic polyurethane sheet having holes formed so as to be interposed between the nonwoven fabric and the mesh material. And the fiber intermediate body was obtained by carrying out the hot press of the lamination | stacking intermediate body with a hot press machine (surface temperature 130 degreeC, press pressure 0.1MPa, press time 20sec). A nylon monofilament mesh material was used as the mesh material.

  And the moisture permeability of the obtained fiber laminated body, peel strength, and softness were measured with the following method.

(Moisture permeability)
In accordance with JIS L1096B, the air permeability was measured using a Gurley type densometer (air passage area = 6.42 cm ² ).

(Peel strength)
The fiber laminate was cut into 230 × 25 (mm) to prepare a test piece. Further, a support piece of a polyurethane rubber plate having a thickness of 5 mm and a size of 50 mm × 30 mm was prepared. Then, a two-component type polyurethane adhesive was applied to each of the surface of the mesh material of the test piece and the surface of the support piece, and heat-treated by placing it in a steam dryer for about 3 minutes. Then, the test piece taken out from the steam dryer and the support piece are overlapped with each other by 100 mm, and the adhesive application surfaces are pressure-bonded with a hand roller, and further pressed with a press pressure (gauge pressure) of 0.3 to 0.5 MPa. Crimped with a machine. Then, it was bonded by curing at 25 ° C. for 24 hours. And the test piece and support piece which were adhere | attached were pulled at the tensile speed of 100 mm / min in the horizontal direction with the tension tester (autograph), and the strength was measured. Then, by excluding the first maximum peak and the minimum peak, five large values and five small values are selected from the maximum peaks, and the average value of the ten values is taken as the peel strength. .
(Softness)
The softness (flexibility) of the fiber laminate was measured using a softness tester (leather softness measuring device ST300: manufactured by MSA Engineering System, UK). Specifically, a predetermined ring having a diameter of 25 mm was set in the lower holder of the apparatus, and then the fiber laminate was set in the lower holder. And the metal pin (diameter 5 mm) fixed to the upper lever was pushed down toward the fiber laminated body. And the numerical value when the upper lever was pushed down and the upper lever was locked was read. The numerical value represents the penetration depth, and the larger the numerical value, the more flexible.

  Moreover, a fine hole exists in the adhesive layer of the obtained fiber laminate, and the adhesive layer includes a first surface layer mixed with a nonwoven fabric, a second surface layer mixed with a mesh material, and a first surface layer. And an intermediate layer having a thickness of 20 μm interposed between the first surface layer and the second surface layer.

  The results are summarized in Table 1.

[Examples 2-7, Comparative Examples 2-11]
In Example 1, instead of forming a large number of through-holes having a hole diameter of 1 mm on the entire surface of the thermoplastic polyurethane sheet so as to have a density of 2.3 holes / cm ² and a total area ratio of 1.8%, Table 1 A fiber laminate was produced and evaluated in the same manner except that a large number of through holes were formed as described. The results are shown in Table 1.

[Comparative Example 1]
In Example 1, instead of the thermoplastic polyurethane sheet in which a large number of through holes having a hole diameter of 1 mm were formed on the entire surface so as to have a total area ratio of 1.8% at a density of 2.3 / cm ² , through holes were formed. A fiber laminate was prepared and evaluated in the same manner except that an unformed thermoplastic polyurethane sheet was used. The results are shown in Table 1.

  The fiber laminate obtained in the present invention is preferably used as the upper material of sports shoes such as running shoes.

DESCRIPTION OF SYMBOLS 1 Nonwoven fabric 2 Mesh material 3 Thermal adhesive resin sheet 4 Hole 10 Fiber laminated body 20 Laminated intermediate

Claims (8)

A non-woven fabric that is an entangled body of ultrafine fibers, a mesh material, and an adhesive layer that bonds the non-woven fabric and the mesh material,
The adhesive layer has a plurality of holes having a hole diameter of 1 to 2.5 mm, and the total area ratio of the holes is 1 to 4% with respect to the entire surface. Fiber laminate according to claim 1 number density of the holes is 0.1 to 7 pieces / cm ^2. The fiber laminate according to claim 1 or 2, wherein the moisture permeability is 0.3 mL / cm ² / sec or more.   The fiber laminate according to any one of claims 1 to 3, wherein a peel strength between the nonwoven fabric and the mesh material is 3 kg / 2.54 cm or more. The adhesive layer has a first surface layer mixed with the nonwoven fabric, a second surface layer mixed with the mesh material, and a thickness of 10 to 35 μm interposed between the first surface layer and the second surface layer. The fiber laminated body of any one of Claims 1-4 which has these intermediate | middle layers.   The fiber laminate according to any one of claims 1 to 5, wherein the adhesive layer is derived from a thermoplastic polyurethane sheet.   A shoe upper material comprising the fiber laminate according to any one of claims 1 to 6. A step of forming a laminated intermediate in which a nonwoven fabric that is an entangled body of ultrafine fibers, a mesh material, and a thermal adhesive resin sheet interposed between the nonwoven fabric and the mesh material are stacked;
Forming a fiber laminate by hot pressing the laminate intermediate, and
The thermal adhesive resin sheet has a plurality of holes having a hole diameter of 1 to 2.5 mm, and the total area ratio of the holes is 1 to 4% with respect to the entire surface. .

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