JP6660252B2 - Shoe upper and method of manufacturing the same - Google Patents

Description

  The present invention relates to a shoe upper having artificial leather and a method for producing the same.

  The artificial leather includes a suede tone (back leather tone) in which a synthetic resin is impregnated into a microfiber nonwoven fabric, and a synthetic leather such as polyurethane coated with a nonwoven fabric as a base material. Generally, in the case of the former suede tone, the outer surface of the artificial leather is raised. On the other hand, in the latter case, the coating layer of the synthetic resin forms a silver layer. Such artificial leather is used for shoe uppers and the like.

In order to adjust the texture of the upper, it is common to apply various fine irregularities to the outer surface of the silver layer (Patent Document 1).
It is also known to remove the silver layer of natural leather and to color the removed portion with ink or the like (Patent Document 2).

  The upper must have a certain rigidity so that the foot can be stably held against the sole. From this viewpoint, a backing material is attached to the inner surface of the artificial leather. For example, stability of the hindfoot that first touches the ground when landing is important.

  On the other hand, if the rigidity of the upper is too large, the upper cannot follow the deformation of the foot, causing problems such as a decrease in running power and difficulty in walking. Since the deformation of the foot is slightly different depending on the site of the foot, it is preferable to provide the upper with flexibility and the rigidity according to the site (Patent Document 3).

  In the upper, when the artificial leather has a grain surface layer, the grain surface layer forms an outer surface. In this case, the silver surface layer exhibits a water resistant function.

JP2012-127010A (front page) JP2010-84056A (front page) WO2004 / 093587A1 (front page)

  SUMMARY OF THE INVENTION An object of the present invention is to provide a shoe upper and a method for manufacturing the shoe upper, which easily exhibit the required flexibility and rigidity depending on the site.

The present invention is a shoe upper comprising an artificial leather layer 1 and a backing material 4 attached to the inner surface 2F side of the artificial leather layer 1,
A thin portion 5 having a concave surface 50 that is depressed on the inner surface 2F side where the backing material 4 is attached is formed in the artificial leather layer 1.

Hereinafter, advantages of the present invention will be described in detail with reference to the drawings.
Most parts, such as the upper heel and the outside of the forefoot, require rigidity to hold the foot. Therefore, the artificial leather as the outer skin of the upper needs a certain thickness. Therefore, there is naturally a limit in thinning the artificial leather connected from the forefoot to the hindfoot.
On the other hand, the foot exhibits complicated deformation during walking and running, but the upper with thick artificial leather prevents free deformation according to the deformation of the foot.

  For example, when the artificial leather layer 101 is thick as shown in FIG. 9A, stability is exhibited. The entire upper is also very rigid and holds the entire foot stably. However, since the portion 105 not reinforced by the reinforcing member 108 is not so thin, free deformation corresponding to deformation of the foot is prevented. That is, flexibility deteriorates.

  On the other hand, when the artificial leather layer 101 is thin as shown in FIG. 9C, the rigidity of the entire upper is small, and the portion 105 not reinforced by the reinforcing member 108 is thin. Therefore, the upper easily deforms freely according to the deformation of the foot, and exhibits flexibility.

  However, in this case, the rigidity of the artificial leather layer 101 is low, and it is necessary to provide the reinforcing member 108 in most regions of the upper in order to obtain the rigidity required for the upper. In particular, it is necessary to provide the reinforcing member 108 over substantially the entire area of the forefoot and heel outside the foot. That is, it causes a cost increase.

  When the reinforcing member 108 is provided inside the artificial leather layer 101, two adhesive layers 107 are required for the reinforcing member 108 as shown in FIG. 9B. The two adhesive layers 107 cause an unnecessarily thick upper.

On the other hand, as shown in FIG. 8A, when the thin portion 5 having the concave surface 50 in which the inner surface 2F side of the nonwoven fabric layer 2 is depressed is formed as shown in FIG. It can exhibit both sex and flexibility.
The site where flexibility is required is partial. Therefore, by forming the thin portion 5 at a necessary portion, flexibility in which the upper is deformed according to the deformation of the foot can be obtained.
On the other hand, the non-thin portion 6 having the nonwoven fabric layer 2 thicker than the nonwoven fabric layer 2 of the thin portion 5 can be formed for most of the upper region. Therefore, it is possible to stably hold the outer forefoot and the heel that require a large holding force, in addition to flexibly along the entire foot.

  Further, as shown in FIG. 8B, the adhesive layer 7 is also a single layer. Therefore, there is no possibility that the upper is unnecessarily thick. Thus, there is no possibility that the rigidity increases.

Next, the reason why the flexibility of the upper is greatly changed by a slight decrease in the thickness of the upper material will be described.
It is not the tensile strength of the upper material but the bending stiffness EIz of the upper material that matters when discussing the flexibility of the upper material. That is, the bending rigidity EIz of the upper material when a bending moment in the direction of the arrow is applied to the non-thin portion 6 in FIG. 1B and the thin portion 5 in FIG. 1C.

In order to make the explanation easy to understand, assuming that the Young's modulus E of the material is constant, the bending rigidity EIz of the flat upper material is given by the following (1).
^{EIz = E * b * T 3} /12 ...... (1)
However, b: width of the material T: thickness of the material Therefore, if the thickness T of the material is reduced by 10% to 90%, the bending rigidity EIz becomes about 73%, and the thickness T is reduced by 20%. When it becomes 80%, the bending rigidity EIz becomes about 50%.

  Thus, since the rigidity EIz is proportional to the cube of the thickness of the material, a slight decrease in the thickness of the upper material significantly improves the flexibility of the upper.

  The concave surface 50 formed in the nonwoven fabric layer 2 on the inner surface 2F side is in contact with the surface of the foot, so that there is a concern that the foot contact may be deteriorated. However, the well-known backing material 4 is stuck on the inner surface 2F side, so that there is no possibility that the foot contact is deteriorated.

  Also, unlike the case where the reinforcing material is sewn to the outer surface of the upper, the degree of freedom of decoration and design of the outer surface is significantly improved.

  In the present invention, the inside means a space for accommodating the upper leg, and the inside surface side means the side of the space.

  Even when the artificial leather layer 1 has the grain surface layer 3, the concave surface 50 is formed on the inner surface 2F side. In this case, the silver surface layer 3 forming the outer surface is not removed, and the water resistance required for the shoes is hardly deteriorated. In other words, the nonwoven fabric layer 2 is easily permeable to water, whereas the silver surface layer 3 formed of the resin coating layer is hardly permeable to water.

  In the present invention, when the artificial leather layer 1 has the grain surface layer 3, the artificial leather layer 1 is adjacent to the thin portion 5 and has a non-thin portion 6 having a thickness larger than the thin portion 5 and the thin portion. 5, the thin portion 5 has the nonwoven fabric layer 2, and the nonwoven fabric layer 2 thinner than the nonwoven fabric layer 2 of the non-thin portion 6 and the grain surface layer 3 are laminated.

In this case, the non-thin portion 6 having the thick nonwoven layer 2 is disposed at a relatively large ratio in a portion requiring rigidity, and the thin portion 5 having the thin nonwoven layer 2 is disposed at a relatively large ratio in a portion requiring flexibility. By arranging them at, both necessary flexibility and rigidity can be exhibited.
Further, since the nonwoven fabric layer 2 is also present in the thin portion 5, the nonwoven fabric layer 2 of the thin portion 5 further suppresses the deterioration of the foot contact.

When the non-thin portion 6 and the thin portion 5 are connected to each other,
The weight per unit area of the thin portion 5 is smaller than the weight per unit area of the non-thin portion 6,
The thin portion 5 has the nonwoven fabric layer 2, and the nonwoven fabric layer 2 thinner than the nonwoven fabric layer 2 of the non-thin portion 6 and the silver surface layer 3 are laminated.
That is, the concave surface 50 of the thin portion 5 is formed by removing a part of the nonwoven fabric layer 2.

As described above, the thin nonwoven fabric layer 2 from which a part of the nonwoven fabric layer 2 is removed has a smaller weight per unit area than the thick nonwoven fabric layer 2.
The comparison of the weight is calculated by weighing a section obtained by cutting the thin portion 5 and the non-thin portion 6 from the upper together with the backing material 4 and the adhesive layer 7 including the backing material 4 and the like, and dividing by the area of the section. You may.
The weighing of the thin portion 5 or the non-thin portion 6 may be determined by cutting out the section from a plurality of locations for each of the thin portion 5 or the non-thin portion 6 and comparing the sum of the respective weights.
The comparison of the weight per unit area may be performed by cutting out sections having the same area from each other from the thin portion 5 and the non-thin portion 6 and comparing only the weight.

(A) is a cross-sectional view showing an enlarged cross-section of an upper according to an embodiment of the present invention in a digital photograph, (b) is a cross-sectional view of a non-thin portion, and (c) is a cross-sectional view of a thin portion. It is an outer side view of a shoe. It is an inner side view of a shoe. It is an outer side view of a shoe. It is an inner side view of a shoe. (A) is a diagram showing a schematic cross section of the upper, (b) is a developed view of the upper before three-dimensional molding. It is a perspective view which decomposes | disassembles and shows some upper parts. (A) is a sectional view showing a part of the upper, (b) and (c) are sectional views showing a manufacturing method, (d) is a sectional view showing another example, and (e) is useful for understanding the present invention. It is sectional drawing which shows a reference example. (A) and (c) are sectional views showing a reference example not included in the present invention, and (b) is a sectional view showing a manufacturing method of the reference example.

  In FIGS. 2 and 3, a dot pattern having a high density is attached to the thin portion. In FIG. 4 and FIG. 5, dots with low density are attached to the hind leg reinforcement, and a lattice pattern is attached to the toe reinforcement and the eyelet reinforcement.

  Preferably, the thickness T5 of the nonwoven fabric layer 2 in the thin portion 5 is 20% to 90% of the thickness T6 of the nonwoven fabric layer 2 in the non-thin portion 6.

  If the nonwoven fabric layer 2 of the thin portion 5 is too thin, the tensile strength required for the upper may be too low, and the upper may be broken. On the other hand, if the nonwoven fabric layer 2 of the thin portion 5 is thick, flexibility is hardly exhibited. From this viewpoint, the thickness ratio T5 / T6 is preferably 30% or more, and most preferably 40% or more. The thickness ratio T5 / T6 is preferably 85% or less, and most preferably 80% or less.

  As the backing material 4, various materials such as a woven fabric, a knitted fabric, a mesh material, and a nonwoven fabric can be used, but a woven fabric is preferable, and a multilayer woven fabric is most preferable. This is because the woven fabric is less likely to elongate in the longitudinal direction of the yarn and, when formed in a multi-layered form, tends to exhibit characteristics that are less likely to elongate than the artificial leather layer 1 in various directions.

  That is, the backing material 4 is preferably a woven fabric that is harder to stretch than the artificial leather layer 1. Whether or not the backing material 4 such as a woven fabric is harder to stretch than the artificial leather layer 1 may be determined in any one direction based on whether or not it is hard to stretch. When the elongation is compared with a test machine, the backing material 4 and the artificial leather layer 1 may be separated by melting the adhesive layer 7 of the upper material. The determination as to whether or not it is difficult to elongate may be made, for example, when the elongation of 5% to 10% occurs.

  Preferably, an adhesive layer 7 is sandwiched between the nonwoven fabric layer 2 and the backing material 4.

  In this case, the nonwoven fabric layer 2 and the backing material 4 are firmly joined by the adhesive layer 7, and deterioration of the tensile strength of the thin portion 5 can be suppressed.

Preferably, the artificial leather layer 1 is continuously arranged over the forefoot F, the middle foot M and the hindfoot R,
The thin portion 5 is provided at least on the forefoot portion F and / or the middle foot portion M.

  The forefoot portion F and the middle foot portion M have a portion where a large distortion occurs in the foot as the foot bends. Therefore, by providing the thin portion 5 at the above-described portion of the forefoot portion F or the middle foot portion M, the flexibility required for the upper can be obtained.

  When the thin portion 5 is provided on the forefoot portion F, the thin portion 5 may be provided on the inner or outer surface of the upper or the upper surface of the forefoot portion F.

Preferably, the artificial leather layer 1 is continuously arranged over the forefoot F, the middle foot M and the hindfoot R,
The thin portion 5 is provided at least on the forefoot portion F,
The average thickness of the artificial leather layer 1 of the forefoot F is smaller than the average thickness of the artificial leather layer 1 of the hindfoot R. That is, the ratio α _F of the total area of the thin portion 5 to the total area of the artificial leather layer 1 in the forefoot _F is the ratio α R of the total area of the thin portion 5 to the total area of the artificial leather layer 1 in the rear foot _R. It is preferably larger than.

Preferably, the artificial leather layer 1 is continuously arranged over the forefoot F, the middle foot M and the hindfoot R,
The thin portion 5 is provided at least on the middle foot M,
The average thickness of the artificial leather layer 1 of the middle foot portion M is smaller than the average thickness of the artificial leather layer 1 of the rear foot portion R. That is, the ratio α _M of the total area of the thin portion 5 to the total area of the artificial leather layer 1 of the middle foot _M is the ratio α of the total area of the thin portion 5 to the total area of the artificial leather layer 1 of the rear foot R. _It is preferably larger than _R.

In these cases, flexibility is obtained at desired locations of the forefoot F and the middle foot M, and the stability required for the hindfoot R is easily obtained.
Since the thickness of the non-thin portion 6 is uniform, the average thickness may be calculated by the area ratio of the thin portion 5 to the total area of each part to be compared.

The method of manufacturing a shoe upper according to the present invention includes the steps of: removing a part of the nonwoven fabric layer 2 to form the concave concave surface 50;
The backing material 4 is attached to the nonwoven fabric layer 2 having the concave surface 50 formed thereon.

  In this case, since a part of the nonwoven fabric layer 2 is removed, unlike the case where the reinforcing member 108 of FIG. 9 is interposed between the artificial leather 101 and the backing material 4, the space between the backing material 4 and the grain surface layer 3 is different. Can be made into one layer.

Preferably, the method further comprises a step of disposing a hot melt sheet 7S between the nonwoven fabric layer 2 having the concave surface 50 and the backing material 4,
The temperature of the sheet 7S is increased, and the backing material 4 is adhered to the nonwoven fabric layer 2 via the sheet 7S.

  A step is formed between the concave surface 50 and the non-concave surface 60 of the nonwoven fabric layer 2. In this case, the hot-melt sheet 7S having a certain thickness reduces the reliability of adhesion between the backing material 4 and the artificial leather layer 1. Hateful.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
In the following description, shoes for the right foot are exemplified.
The shoes shown in FIGS. 2 to 5 are, for example, spike shoes, and an upper A is fixed to a sole S. The upper A includes the artificial leather layer 1 of FIG. 1A, the backing material 4, and the reinforcing members 81, 82, and 83 of FIG. In the case of the present embodiment, for example, a woven fabric is employed as the backing material 4 (FIG. 1).

The sole S is disposed below the upper A and contacts the road surface. In the front foot F, the middle foot M and the rear foot R, the artificial leather layer 1 and the backing material 4 shown in FIG. 6A wrap the inside and outside surfaces of the foot. In addition, a fastening member (for example, shoelace) for fitting the upper A to the foot may be provided.

The upper A in FIG. 2 is provided with a mouthpiece 9 for inserting a foot when the foot is worn. The wearing mouth 9 has legs protruding upward during wearing, and an eyelet hole through which the shoelace passes is arranged at a position in front of the wearing mouth 9. In addition, a tongue piece (not shown) may be provided in front of the wearing mouth 9.

As shown in FIG. 6 (a), the artificial leather layer 1 forms an outer skin, while the backing material 4 forms an inner skin in contact with the foot. The artificial leather layer 1 of FIG. 1 is joined to the backing material 4 via an adhesive layer 7. Note that a hot melt sheet made of a thermoplastic resin may be employed as the adhesive layer 7.

In FIG. 1A, the artificial leather layer 1 has a nonwoven fabric layer 2 and a grain surface layer 3 laminated thereon. The outer surface 3F of the silver surface layer 3 is a surface exposed to the outside. The inner surface 2F of the nonwoven fabric layer 2 is a surface to be joined to the backing material 4 via the adhesive layer 7. That is, the inner surface 2F of the nonwoven fabric layer 2 faces the surface of the wearer's foot via the backing material 4 or the like.

  A thin portion 5 is formed in the artificial leather layer 1. The thin portion 5 has a concave surface 50. The concave surface 50 is recessed on the inner surface 2F side of the nonwoven fabric layer 2 to which the backing material 4 is attached.

In the artificial leather layer 1, the non-thin portion 6 and the thin portion 5 are connected to each other. The non-thin portion 6 is adjacent to the thin portion 5 and has a greater thickness than the thin portion 5. The thin portion 5 is formed by laminating a nonwoven fabric layer 2 thinner than the nonwoven fabric layer 2 of the non-thin portion 6 and the grain surface layer 3.

The weight per unit area of the thin portion 5 is smaller than that of the non-thin portion 6 (weight per unit area).
The thin portion 5 has the nonwoven fabric layer 2, and the nonwoven fabric layer 2 thinner than the nonwoven fabric layer 2 of the non-thin portion 6 and the silver surface layer 3 are laminated. As described later, the concave surface 50 of the thin portion 5 is formed by removing a part of the nonwoven fabric layer 2.

The concave surface 50 is formed by denting the nonwoven fabric layer 2. The concave surface 50 may be a smooth curved surface as shown in FIG. 1A, or may have a rectangular cross section as shown in FIG. 8A.

The concave surface 50 may not reach the grain surface layer 3 as shown in FIG. 8A, or may reach the grain surface layer 3 as shown in FIG. 8D. In general, as shown in FIG. 1A, it is preferable that a part of the nonwoven fabric layer 2 is removed from the thin-walled part 5 and another part remains. That is, the concave surface 50 is preferably formed of the nonwoven fabric layer 2, and the surface 3 </ b> B on the opposite side of the outer surface 3 </ b> F of the silver surface layer 3 is preferably covered with the nonwoven fabric layer 2.

In the case of this example, the thickness T5 of the nonwoven fabric layer 2 of the thin portion 5 in FIG. 1C is about 50% to 80% of the thickness T6 of the nonwoven fabric layer 2 of the non-thin portion 6 in FIG. is there.

The artificial leather layer 1 and the backing material 4 of FIG. 1 are continuously arranged over the front foot F, the middle foot M and the rear foot R of FIG. As shown in FIGS. 2 and 3, the thin portion 5 is provided on the forefoot portion F and / or the middle foot portion M. The average thickness of each of the artificial leather layers 1 of the forefoot F and the middle foot M is smaller than the average thickness of the artificial leather layer 1 of the hindfoot R.

More specifically, the average thickness of the artificial leather layer 1 ranging from 20% to 60% of the total length of the shoe from the upper end FE is 80% to 100% of the total length of the shoe from the upper end FE. Less than the average thickness of the range.

In the case of this example, the thickness of the nonwoven fabric layer 2 of the non-thin portion 6 is uniform. Therefore, the ratios α _F , α _M , α _R , α _26, α ₈₁₀ of the total area of the thin portion 5 to the total area of each part may be compared, rather than comparing the average thickness.

That is, at least one of the following equations (1) to (4) may be satisfied.
α _F > α _R <α _M (1)
α _M > α _R (2)
α _F > α _R (3)
α ₂₆ > α ₈₁₀ (4)

However,
α _F : the ratio of the total area of the thin portion 5 of the forefoot F to the total area of the artificial leather layer 1 of the forefoot F α _M : the ratio of the middle foot _{M to} the total area of the artificial leather layer 1 of the middle foot M Ratio α _R of total area of thin portion 5: Ratio of total area of thin portion 5 of hind foot _{R to} total area of artificial leather layer 1 of hind foot R α ₂₆ : Total length of shoe from tip FE of upper the ratio of the total area of the thin portion 5 of the range _{a 26} to the total area of the layer 1 of the artificial leather of 20% to 60% of the range _{a 26} alpha _810: upper tip FE of 80% to 100% of the total length of the shoe the ratio of the total area of the thin portion 5 of the range a ₈₁₀ to the total area of the layer 1 of the artificial leather in the range a ₈₁₀

The forefoot F, the midfoot M, and the hindfoot R refer to portions that cover the forefoot, middlefoot, and hindfoot of the foot, respectively. The forefoot consists of five metatarsals and 14 phalanges. The metatarsal consists of a scaphoid, a cuboid, and three wedges. The hind foot consists of the talus and the calcaneus.

The first reinforcing member 81 having the lattice pattern shown in FIGS. 4 and 5 is disposed at the toe of the upper and is formed of a highly rigid core material. The second reinforcing member 82, also having a lattice pattern, is provided at the eyelet portion so as to be connected back and forth, and is formed of a tape material that does not easily stretch. The third reinforcing member 83 having a rough dot pattern is arranged over most or the entire area of the rear foot portion R, and is formed of a resin sheet having excellent elasticity.

As can be seen from FIGS. 3, 4 and 6 (b), the first and second reinforcing members 81, 82 are sandwiched between the artificial leather layer 1 and the backing material 4 in FIG. 6 (a). May be. On the other hand, the third reinforcing member 83 in FIG. 6B may be attached to the inner surface 4F of the backing material 4 in FIG.

As shown in FIG. 2, a cushion 90 called an ankle sponge may be arranged near the wearing mouth 9.

Next, a method for manufacturing the upper material A1 in FIG. 6B will be described.
A part of the nonwoven fabric layer 2 of artificial leather having a constant thickness is removed (shaved) by, for example, laser processing, sandblasting and / or water jet processing, and has a thin wall having a concave concave surface 50 as shown in FIG. The part 5 is formed.

Next, as shown in FIGS. 8B and 8C, a hot-melt sheet 7S is arranged between the nonwoven fabric layer 2 having the concave surface 50 and the backing material 4. Thereafter, the temperature of the sheet 7S is increased, and the backing material 4 is bonded to the nonwoven fabric layer 2 via the sheet 7S. Thus, as shown in FIG. 8A, the backing material 4 is attached to the nonwoven fabric layer 2 having the concave surface 50 formed thereon.

The reinforcing members 81 to 83 are arranged between the artificial leather layer 1 and the backing material 4 or on the inner surface 4F of the backing material 4 as necessary.

The upper material A1 of FIG. 6B generated in this way is subjected to well-known three-dimensional molding, and is integrated with the insole 100 of FIG. 6A to form the upper A of FIG.

FIG. 8E shows a reference example using suede-like artificial leather.
In the reference example shown in this figure, the layer 1 of the artificial leather that is formed only by the non-woven layer 2 having no grain layer 3.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will easily envisage various changes and modifications within the obvious scope upon reading this specification.
For example, the shoes may be not only spike shoes but also various shoes such as athletic shoes, business shoes, and shoes worn daily.
Further, it is not necessary to have a fastening member such as a shoe lace.
The artificial leather layer may have another layer other than the grain surface layer and the nonwoven fabric layer.
Accordingly, such changes and modifications are to be construed as being within the scope of the invention as defined by the appended claims.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a shoe upper having an artificial leather layer and a method of manufacturing the same.

1: Artificial leather layer 2: Non-woven fabric layer 2F: Internal surface 3: Silver surface layer 3F: External surface 3B: Opposite surface 4: Backing material 4F: Internal surface 5: Thin portion 50: Concave surface 6: Non-thin portion 60 : Non-concave surface 7: Adhesive layer 7S: Sheet 81-83: Reinforcing member 9: Wear mouth 90: Cushion 100: Insole A: Upper A1: Upper material S: Sole FE: Tip F: Forefoot M: Midfoot R: Hindfoot T, T5, T6: Thickness

Claims (9)

An upper for a shoe in which a backing material 4 is adhered to an artificial leather layer 1 in which a grain surface layer 3 is laminated on a nonwoven fabric layer 2, wherein the grain surface layer 3 forms an outer surface 3F of the upper, and In the upper joined to the inner surface 2F of the nonwoven fabric layer 2,
The artificial leather layer 1 has a thin portion 5 having a concave surface 50 on the inner surface 2F side of the nonwoven fabric layer 2 to which the backing material 4 is stuck, and a thin portion 5 adjacent to the thin portion 5 and thicker than the thin portion 5. The large non-thin portion 6 is connected to each other,
The silver surface layer 3 forming the outer surface 3F is not shaved,
The concave surface 50 is formed by shaving a part of the nonwoven fabric layer 2,
Thereby, the weight per unit area of the thin portion 5 having the concave surface 50 is smaller than the weight per unit area of the non-thin portion 6,
The upper portion of the shoe, wherein the thin portion 5 has the nonwoven fabric layer 2, and the thin portion 5 is formed by laminating the nonwoven fabric layer 2 thinner than the nonwoven fabric layer 2 of the non-thinner portion 6 and the grain surface layer 3 to each other. .   The shoe upper according to claim 1, wherein a thickness T5 of the nonwoven fabric layer 2 of the thin portion 5 is 20% to 90% of a thickness T6 of the nonwoven fabric layer 2 of the non-thin portion 6.   The shoe upper according to claim 1, wherein the backing material 4 is a woven fabric. 2. The artificial leather layer 1 according to claim 1, wherein the artificial leather layer 1 is continuously arranged over the forefoot F, the middle foot M and the rear foot R,
The shoe upper, wherein the thin portion 5 is provided at least on the forefoot portion F and / or the middle foot portion M. In claim 2, the artificial leather layer 1 is continuously arranged over the front foot F, the middle foot M and the rear foot R,
The thin portion 5 is provided at least on the middle foot M,
An upper for shoes, wherein the average thickness of the artificial leather layer 1 of the middle foot portion M is smaller than the average thickness of the artificial leather layer 1 of the rear foot portion R. In claim 2, the artificial leather layer 1 is continuously arranged over the front foot F, the middle foot M and the rear foot R,
The thin portion 5 is provided at least on the forefoot portion F,
An upper for shoes, wherein the average thickness of the artificial leather layer 1 of the forefoot F is smaller than the average thickness of the artificial leather layer 1 of the hindfoot R. The shoe upper according to any one of claims 1 to 6 , wherein an adhesive layer 7 is sandwiched between the nonwoven fabric layer 2 and the backing material 4. A method for producing a shoe upper according to any one of claims 1 to 7 ,
Shaving and removing a part of the nonwoven fabric layer 2 to form the concave concave surface 50;
Attaching the backing material 4 to the nonwoven fabric layer 2 on which the concave surface 50 is formed. The method according to claim 8 , further comprising a step of disposing a hot melt sheet 7S between the nonwoven fabric layer 2 having the concave surface 50 and the backing material 4,
A method for manufacturing an upper, wherein the step of attaching the backing material 4 to the nonwoven fabric layer 2 by heating the sheet 7S and bonding the backing material 4 to the nonwoven fabric layer 2 via the sheet 7S is performed.