JP2024079227A - Product with solid matter attached to its surface and method for manufacturing same - Google Patents

Abstract

[Problem] The object of the present invention is to provide a product having a structure that allows a solid object to be easily and firmly adhered to the water-repellent surface of a material with an adhesive, and a method for manufacturing such a product. [Solution] The product 100 of the present invention is a material 110 having a water-repellent surface 101, the water-repellent surface 101 including the material 110 having an adhesive region R1, and a solid object 120 having a bottom surface 120a adhered to the adhesive region R1, the adhesive region R1 having a plurality of holes 111, and the adhesive region R1 and the bottom surface 120a of the solid object 120 being adhered to each other with an adhesive 130. [Selected Figure] Figure 1

Description

The present invention relates to a product having a solid object bonded to a surface and a method for manufacturing the same, and in particular to a structure and method for bonding a solid object to a water-repellent surface of a material with an adhesive.

Conventionally, hot melt adhesives have been used as a method for adhering solid objects such as crystal glass and jewels to flexible materials with flat shapes such as cloth and leather. For example, Patent Document 1 discloses a method for adhering such materials to solid objects.

Japanese Patent No. 3530979

However, with conventional methods, when adhering a solid object to the water-repellent surface of a material, hydrophilicity was not guaranteed between the water-repellent surface and the adhesive, so it was not easy to adhere the solid object to the water-repellent surface and the adhesive strength was insufficient.

The present invention aims to obtain a product with a structure that allows solid objects to be adhered to the water-repellent surface of a material with sufficient strength, and a method for manufacturing such a product.

(Item 1)
a material having a water repellent surface, the water repellent surface including an adhesive region;
and a solid object having a bottom surface adhered to the adhesive area, the adhesive area having a plurality of holes, the adhesive area and the bottom surface of the solid object being adhered to each other by an adhesive.

(Item 2)
2. The article of claim 1, wherein the adhesive area has an area of about 2 mm ² to about 80 mm ² .

(Item 3)
2. The article of claim 1, wherein the adhesive area has about 2 holes/mm ² to about 11 holes/mm ² .

(Item 4)
2. The product according to item 1, wherein the solid has a size that fits into a cube having a side length of about 10 mm.

(Item 5)
2. The article of claim 1, wherein the adhesive area is from about 3 mm ² to about 40 mm ² .

(Item 6)
2. The article of claim 1, wherein the adhesive area is generally circular.

(Item 7)
2. The article of claim 1, wherein the solid body is crystal glass.

(Item 8)
2. The article of manufacture of claim 1, wherein the material has a thickness of about 0.3 mm to about 5 mm.

(Item 9)
2. The product according to item 1, wherein the material is leather, synthetic leather, cloth, wood, paper or resin.

(Item 10)
2. The article of claim 1, wherein the hole extends entirely through the material.

(Item 11)
1. A method of manufacturing a product, comprising:
The product includes a material having a water-repellent surface and a solid object having a bottom surface;
the water-repellent surface includes an adhesive region for adhering a bottom surface of the solid object;
The method comprises:
drilling a plurality of holes in the bond area of the material;
placing the solid object on the adhesive region via the adhesive, thereby interposing the adhesive between the adhesive region and a bottom surface of the solid object;
heating the adhesive so that the adhesive melts;
and adhering the solid object to the substrate by cooling the molten adhesive so that the adhesive solidifies.

The present invention provides a product with a structure that allows solid objects to be adhered to the water-repellent surface of a material with sufficient strength, as well as a method for manufacturing such a product.

FIG. 1 is a diagram showing a product 100 according to a first embodiment of the present invention, illustrating its appearance and cross-sectional structure. FIG. 2 is a perspective view showing the product 100 shown in FIG. 1 disassembled into a material 110, a solid body 120, and an adhesive 130. As shown in FIG. FIG. 3 is a perspective view showing a manufacturing method of the product 100 shown in FIG. 1, illustrating the step of drilling holes in the adhesive region R1 of the material 110. As shown in FIG. FIG. 4 is a perspective view showing a method for manufacturing the product 100 shown in FIG. 1, illustrating the step of positioning the solid object 120 relative to the adhesive region R1 of the material 110 using the adhesive sheet 20. FIG. 5 is a perspective view showing a manufacturing method of the product 100 shown in FIG. 1, and shows a state in which a solid object 120 is placed on the adhesive region R1 of the material 110 with an adhesive 130 interposed therebetween. FIG. 6 is a perspective view showing a method of manufacturing the product 100 shown in FIG. 1, illustrating the step of heating the adhesive 130 in the heating chamber 30. FIG. 7 is a perspective view showing a manufacturing method of the product 100 shown in FIG. 1, illustrating the state in which the adhesive sheet 20 is removed from the solid object 120 adhered to the material 110. As shown in FIG. FIG. 8 is a photograph showing several crystal glasses of different sizes adhered to cowhide leather with a thickness of about 1 mm. FIG. 9 shows the pattern of holes provided in the bonding area for the crystal glass bonding of FIG.

The present invention is described below. It should be understood that the terms used in this specification are used in the sense commonly used in the art unless otherwise specified. Therefore, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the art to which this invention belongs. In the case of conflict, the present specification (including definitions) will take precedence.

In this specification, "about" means within a range of ±10% of the number that follows.

In this specification, "water repellency" refers to the property of the surface of a material being water-resistant by repelling water. Specifically, water repellency refers to a water contact angle of a water droplet on the surface of the material that is typically about 90° or more, preferably about 100° or more, and more preferably about 105° or more. It also includes a superwater-repellent state in which the water contact angle exceeds about 150°.

In this specification, "approximately circular" refers to any shape enclosed by a gentle curve, and is not limited to a perfect circle or ellipse.

The "diameter" of the hole in this invention refers to the maximum length between two different points on the surface of the hole on the material surface.

As used herein, "flexible" with respect to a material means that the material is non-rigid, non-brittle or non-rigid and therefore when subjected to an external force, can bend, stretch, deform or dent due to such external force, but will not break or lose functionality.

The present invention aims to obtain a product having a structure that allows a solid object to be adhered to the water-repellent surface of a material with sufficient strength,
a material having a water repellent surface, the water repellent surface including an adhesive region;
The above problem is solved by providing a product comprising: a solid object having a bottom surface adhered to an adhesive area, the adhesive area having a plurality of holes, and the adhesive area and the bottom surface of the solid object being adhered to each other with an adhesive.

(1) Product of the Present Invention The product of the present invention comprises a material having such a water-repellent surface, and a solid object having a bottom surface bonded with an adhesive to an adhesive area of the water-repellent surface, and the adhesive area has a plurality of holes. As long as the adhesive area has a plurality of holes, other configurations, i.e., the specific configuration of the product, are not particularly limited, and specific configuration examples of the product are described below.

For example, the materials of the material, adhesive, and solids, as well as the shapes and sizes of the material, solids, adhesive areas, and holes are not particularly limited.

〔material〕
The material is a component to which a solid object is to be adhered, has a water-repellent surface, includes an adhesion area for adhering the solid object, and has a plurality of holes, so long as the other configurations are not limited and may be any. Therefore, the material may have a single layer structure or a multi-layer structure.

(Material structure)
The material of the present invention may be any material having a water-repellent surface. The water-repellent surface of the material of the present invention may be provided by subjecting the surface of the material to a water-repellent treatment, or by overlaying a material having water repellency on the surface of the material.

There are no particular limitations on the water-repellent treatment, and examples of the water-repellent treatment include a method of introducing a hydrophobic functional group, such as an alkyl group, an alkenyl group, an alkoxy group, or an alkenyloxy group, or an alkyl group or an alkoxy group in which one or more hydrogen atoms are substituted with a fluorine atom, to the substrate surface. There are no particular limitations on the water-repellent material, and examples of the water-repellent material include hydrophobic polymers such as polypropylene, polyethylene, and polysulfone; chlorine- or fluorine-containing polymers such as polyvinylidene chloride, polyvinylidene fluoride, fluorinated carbon, and polytetrafluoroethylene.

The material used in the present invention may be leather (e.g., cowhide), synthetic leather, cloth, wood, paper, or resin. The material of the present invention is typically leather. Leather generally has an inner layer that constitutes the leather body and a thin leather film that covers the leather body, and the thin leather film has a structure that has stronger water repellency than the leather body. In addition, with respect to leather, the thin leather film, that is, the thin coating film present on the surface of the leather body, has waterproof properties and is specifically called the silver surface. The leather may be genuine leather or synthetic leather, and further, such a two-layer structure material is not limited to leather, but may be rubber, or cloth, wood, paper, or resin with a water-repellent surface.

The thickness of the material may be, for example, but is not limited to, about 0.3 mm to about 5 mm. A thickness of about 0.3 mm to about 5 mm may be a typical thickness for fabrics used in products such as clothing, handbags, and shoes. The present invention solves the problem that it has been difficult to adhere solid objects with sufficient strength to materials of such thickness and that have a water-repellent surface.

In particular, the present invention is a useful technology for solving the problem that it is easy to attach solid objects to inflexible materials with adhesives, but difficult to attach solid objects to flexible materials with adhesives, and it is possible to attach solid objects to such flexible materials. Such flexible materials are used as fabrics for products such as clothing, handbags, and shoes, and often have a thickness of about 0.5 mm to about 3 mm.

(Hole in material)
The hole formed in the adhesive region of the material may be a through hole or a bottomed hole. Here, the diameter of the hole is determined by the diameter of the needle that opens the hole in the adhesive region and the properties of the material. For example, depending on the properties of the material, even if the diameter of the needle is about 0.8 mm, the diameter of the hole may be a small dimension, about a fraction of the diameter of the needle, specifically, about 0.1 mm. In other words, even if a hole is opened in a material with a needle, the hole does not necessarily have a diameter equal to the diameter of the needle. Also, when opening holes in different materials with a needle, the diameter of the hole that is created varies depending on the material, even if the same needle is used.

The shape of the opening of the hole is not limited, and may be any shape. Therefore, the opening of the hole is not limited to a substantially circular opening, and may be a substantially rectangular opening. Here, it is preferable that the hole has a substantially circular opening, since the opening of the hole has a smooth shape without corners, so that the force from the adhesive is less likely to concentrate locally and the hole of the material is less likely to be damaged. The diameter of the opening of the hole is mainly determined by the diameter of the needle that opens the hole in the adhesive region, and the diameter of this needle is about 0.5 mm to about 1.5 mm, more preferably about 0.6 mm to about 1.0 mm, typically about 0.8 mm. If the diameter of the opening of the hole formed by the needle is small, the area of the contact surface between the hole and the adhesive becomes small, sufficient adhesive strength cannot be obtained, and the adhesive as an anchor falls out of the hole. Conversely, if the diameter of the opening of the hole formed by the needle is too large, a large force will be applied from the adhesive as an anchor to one hole of the material, and the hole of the material will be damaged due to cracking or the like, and the adhesive as an anchor will fall out of the hole. Those skilled in the art can select the appropriate needle diameter based on the size and material properties of the solid objects to be bonded.

(Material adhesion area)
The adhesive area of the material includes a plurality of holes, and is an area onto which a solid object is to be attached. The size (area) of the adhesive area is about 2 mm ² to about 80 mm ² , and preferably about 3 mm ² to about 40 mm ² .

The size of the adhesive area corresponds approximately to the size of the adhesive surface of the solid object. If the solid object is large, there are various methods for attaching the solid object to the water-repellent surface of the material. However, if the solid object is a solid object that fits into a cube with a side of about 10 mm, it is difficult to attach the solid object to the water-repellent surface of the material. The present invention overcomes this difficulty, and makes it possible to adhere even a small solid object that fits into a cube with a side of about 10 mm to the water-repellent surface of the material with sufficient strength. In this case, if the adhesive area is approximately circular, its area is (10÷2) ² ×3.14=78.5 (approximately 80 mm ² ).

In addition, if the area of the adhesive region where a solid object, which is a decoration attached to the fabric of a commodity such as clothing, handbags, shoes, etc., is adhered is smaller than about ² mm2 (i.e., if the contact region is a circular region and its diameter is smaller than about 1.6 mm), it becomes difficult to visually recognize the solid object, so the adhesive region where a solid object of such size is adhered may usually have an area of about ² mm2 (0.8 x 0.8 x 3.14 = 2.01) or more. Therefore, in the present invention, the area of the adhesive region is significant in the range of about ² mm2 to about ⁸⁰ mm2.

In particular, as shown in Examples 1 and 2 below, the present invention enabled the solid to be bonded to the substrate with sufficient strength by providing 16 holes in an adhesion area of approximately 7 ^mm2 (diameter approximately 3 mm) of the solid, and 40 holes in an adhesion area of approximately 13 ^mm2 (diameter approximately 4 mm).

Furthermore, as shown in Example 3 below, when the adhesion area of the solid matter was ^about 3 mm to ^about 40 mm (corresponding to the area of a circle with a diameter of about 2 mm to about 7 mm), even when the needle depth was shallower than in Examples 1 and 2 and many small holes were provided, the solid matter could be adhered to the material with sufficient strength.

If the accent of the solid object placed here is to be more subtle, the solid object will be smaller and the adhesive area as the placement area may have an area of about ² mm2 or less, or if the accent of the solid object placed here is to be more pronounced, the solid object will be larger and the adhesive area as the placement area may have an area of about ⁸⁰ mm2 or more.

The adhesive region has, for example, about 2 to about 11 holes per unit area (mm ² ). The number of holes per unit area should be adjusted depending on the size of the solid object, but it has been found that when the adhesive region has about 2 to about 11 holes per unit area (mm ² ), the solid object can be adhered to the water-repellent surface with sufficient adhesive strength.

That is, when the adhesion area of the solid matter (i.e., the area of the adhesion region) is about 7 ^mm2 (corresponding to the area of a circle with a diameter of about 3 mm), sufficient adhesion strength of the solid matter to the water-repellent surface is obtained when the number of holes arranged in this adhesion region is 16. In this case, the number of holes per unit area ( ^mm2 ) is calculated as 16÷(1.5×1.5×3.14)=2.26 (about 2 holes).

Furthermore, when the adhesion area of the solid matter (i.e., the area of the adhesion region) is approximately 3.1 ^mm2 (corresponding to the area of a circle with a diameter of approximately 2 mm), sufficient adhesion strength of the solid matter to the water-repellent surface was obtained when the number of holes arranged in this adhesion region was 33. The number of holes per unit area ( ^mm2 ) in this case was calculated as 33÷(1×1×3.14)=10.6 (approximately 11 holes).

The number of holes in one adhesive region is, for example, about 16 to about 280, but depending on the size of the solid object to be placed in this region, there may be 16 or fewer holes, or 280 or more holes.

Furthermore, it is generally preferred that the shape of the adhesive region is approximately circular. In this case, it is possible to make the bottom surface of the solid object to be adhered to the adhesive region of the material similarly approximately circular, that is, the outer edge of the portion where the solid object and the material are adhered can be made smooth without corners, and the two are unlikely to peel off. However, the shape of the adhesive region is not limited to approximately circular, and may be approximately elliptical or approximately polygonal, such as approximately square or approximately hexagonal, depending on the shape of the solid object placed in the adhesive region. It is preferred that the shape of the adhesive region matches the shape of the bottom surface of the solid object. This is because, if the shape of the adhesive region matches the shape of the bottom surface of the solid object, the opening edge of the hole formed in the adhesive region will be hidden by the solid object.

[Solids]
The solid object may be any material and shape as long as it can be bonded to the base material, and may be, for example, glass such as crystal glass (high-quality glass with high transparency). However, the solid object is not limited to this, and may be glass other than crystal glass, or may be gemstones, crystals, stones, pottery, porcelain, other ceramics, or even metal, resin, etc.

As an example, as described above, the size of the solid object is a size that fits into a cube with sides of about 10 mm, but the solid object may be large enough to protrude from this cube (the area of the contact area with the material is about 80 ^mm2 or more), or the area of the contact area with the material may be smaller than about ² mm2. This is because the size of the solid object to be adhered to the adhesive area also varies depending on the design, which takes into account the added value of the product to which the solid object is attached.

For example, depending on the product to which it is attached, the added value of the solid object may be increased by adopting a larger or smaller size, and in this case, the solid object as a decorative item is not necessarily limited to a size that fits within a 10 mm cube (a contact area of less than approximately 80 ^mm2 ), nor is it limited to a contact area of more than approximately ² mm2.

The solid may be of any shape, but must have at least a substantially flat bottom surface that functions as an adhesive surface.

〔glue〕
The adhesive is not particularly limited as long as it can adhere solid matter to the material, but a hot melt adhesive, that is, an adhesive that is solid at room temperature and melts when heated, is used because it can easily perform the adhesion work and achieve high adhesion accuracy. The melting point of the hot melt adhesive is, for example, about 130°C, but is not limited to this and may be a higher temperature (e.g., about 150°C) or a lower temperature (e.g., about 110°C).

Hot melt adhesives are non-flammable adhesives that do not contain any organic solvents that may ignite. They become liquid when heated, but contain no moisture or solvents and are non-toxic, making them suitable for use in food containers and sealing materials.

Examples of hot melt adhesives of the present invention include ethylene-vinyl acetate copolymer resin (EVA)-based adhesives, polyethylene-based adhesives, polyamide-based adhesives, polyisobutylene-based adhesives, and polyester-based adhesives.

(2) Manufacturing Method of Product Further, the present invention aims to obtain a method for manufacturing a product having a structure that enables a solid object to be adhered to the water-repellent surface of a material with sufficient strength,
1. A method of manufacturing a product, comprising:
The product includes a material having a water-repellent surface and a solid object having a bottom surface;
the water-repellent surface includes an adhesive area for adhering a bottom surface of a solid object;
The method is:
drilling a plurality of holes in the bonded area of the material;
placing a solid object on the adhesive region via the adhesive, thereby interposing the adhesive between the adhesive region and a bottom surface of the solid object;
heating the adhesive so that the adhesive melts;
The above object is achieved by providing a method for manufacturing a product, the method comprising the steps of: cooling the molten adhesive so that it solidifies, thereby adhering the solid to the substrate.

In this way, the manufacturing method of the product of the present invention is not limited to any other configuration, as long as it involves forming a plurality of holes in the adhesive area when adhering the bottom surface of a solid object to the adhesive area having a water-repellent surface of the material, and adhering the bottom surface of the solid object to such adhesive area via adhesive.

However, in the following embodiment, the specific structure of the product is shown as a structure in which the bottom surface of the crystal glass is adhered to the adhesive area of the water-repellent surface of the leather with a hot melt adhesive, and the method of manufacturing the product is described as a method of manufacturing a product with such a structure.

The following describes an embodiment of the present invention with reference to the drawings.

(Embodiment 1)
Fig. 1 shows a product 100 according to a first embodiment of the present invention, Fig. 1(a) is a perspective view showing the appearance thereof, and Fig. 1(b) is a cross-sectional view taken along line A-A in Fig. 1(a). Fig. 2 is a perspective view showing the product 100 shown in Fig. 1 disassembled into a material 110, a solid body 120, and an adhesive 130.

This product 100 includes a material 110 having a water-repellent surface 101 and a solid object 120 having a bottom surface 120a, with the bottom surface 120a of the solid object 120 bonded to the water-repellent surface 101 of the material 110 with a hot melt adhesive 130.

Here, the water-repellent surface 101 of the material 110 includes a plurality of adhesive regions R1 for adhering the solid object 120, and the adhesive regions R1 of the material 110 have a plurality of holes 111. Here, the number of adhesive regions R1 in the water-repellent surface 101 is not limited, and may be, for example, one, two, or more. Note that in the drawings, for convenience of illustration, the number of adhesive regions R1 included in the water-repellent surface 101 is shown as two.

The number of holes 111 in the adhesive region R1 is not limited to two or more, and as described above, may be, for example, 16 to 280, but may be 15 or less or 281 or more. Note that, for convenience of illustration, four holes 111 are shown in the drawing.

The material 110 also includes a material body 110a and a material thin film 110b formed on the surface of the material body 110a, and this material thin film 110b makes the surface of the material 110 a water-repellent surface 101. This material thin film 110b covers the surface of the material body 110a to make it waterproof.

The details are explained below.

(Material 110)
Here, the material 110 is leather (genuine leather), the material body 110a is the main body of the leather, and the material thin film 110b is a thin film that covers the surface of the leather body. This material thin film 110b provides waterproofing to the leather as the material 110, and the surface of the material 110 becomes a water-repellent surface 101 due to this material thin film 110b.

Here, the thin material film 110b may be the part called the grain surface, which is the original structure of the leather and forms the surface of the genuine leather, or it may be a coating film obtained by applying a coating of resin or the like to the part (split leather part) obtained by removing the original grain surface part of the leather.

The thickness of the material 110 is about 0.3 mm to about 5 mm. However, the thickness of the material 110 may be less than about 0.3 mm or may be greater than about 5 mm. As mentioned above, about 0.3 mm to about 5 mm can be a general thickness of fabric used for products such as clothing, handbags, and shoes. Here, for the material 110, a thickness of about 0.5 mm to about 3 mm is mainly used because it is highly flexible. In particular, leather that is thicker than this has poor elasticity and is inferior in flexibility compared to leather that is about 0.5 mm to about 3 mm thick. However, as shown in the examples, it has been achieved to adhere a solid object with sufficient strength to a material of such thickness that is flexible and has a water-repellent surface.

The water-repellent surface 101 of the material 110 includes a plurality of adhesion regions R1 for adhering the solid objects 120, and the adhesion regions R1 have a plurality of holes 111. The holes 111 are through holes that penetrate the material 110. However, the holes 111 may also be holes with bottoms.

In the product 100 of this embodiment 1, the material 110 is leather, which is a typical material for adhering solid objects, but the material 110 is not limited to leather and may be synthetic leather, cloth, resin, or paper.

(Adhesive region R1)
The adhesive region R1 has an area of, for example, about 2 mm ² to about 80 mm ² .

Here, the upper limit of the area of the adhesive region R1, "about 80 mm ² ", is based on the size of the solid object of the present invention.

That is, if the solid object is small enough to fit into a cube with sides of about 10 mm, it is difficult to attach it to the water-repellent surface of the material. The present invention overcomes this difficulty, making it possible to adhere even a small solid object that fits into a cube with sides of about 10 mm to the water-repellent surface of the material with sufficient strength. The solid object of the present invention is large enough to fit into a cube with sides of about 10 mm, and if the contact area where this solid object comes into contact with the material is a circular area, the area is 5 x 5 x 3.14 = 78.5 (about 80) ^mm2 .

The lower limit of the area of the adhesive region R1, "about 2 mm ² ", is also based on the size of the solid matter of the present invention.

When the area of the adhesive region where a solid object, which is a decorative object attached to the fabric of a product such as clothing, handbags, or shoes, is adhered is smaller than approximately ² mm2 (i.e., when the diameter is smaller than approximately 1.6 mm), it becomes difficult to visually recognize the solid object. Therefore, the adhesive region where a solid object of such size is adhered desirably has an area of approximately ² mm2 (0.8 x 0.8 x 3.14 = 2.01) or more.

The adhesive region R1 may have an area of about ² mm2 or less if the accent of the solid object placed therein is to be more subtle, or may have an area of about ⁸⁰ mm2 or more if the accent of the solid object placed therein is to be more prominent.

However, in the adhesive region R1, if the viscosity of the adhesive in the molten state is high, the adhesive region R1 may have large diameter holes at a density of about 2 holes/ ^mm2 or less, and in the adhesive region R1, if the viscosity of the adhesive in the molten state is low, the adhesive region ^R1 may have small diameter holes at a density of about 3.5 holes/mm2 or more.

The adhesive region R1 is also substantially circular. However, the shape of the adhesive region R1 is not limited to a substantially circular shape, and may be substantially elliptical or substantially polygonal, such as substantially rectangular or substantially hexagonal.

Additionally, the holes formed in the adhesive area are through holes, but they may alternatively be holes with bottoms.

In addition, the hole 111 generally has an approximately circular opening of a size obtained by piercing the leather with a needle having a diameter of about 0.5 mm to about 1.5 mm, more preferably about 0.6 mm to about 1.0 mm, typically about 0.8 mm. Here, it is preferable that the hole has an approximately circular opening because the opening of the hole has a smooth shape without corners, so that the force from the adhesive is less likely to concentrate locally and the hole of the material is less likely to be damaged. In addition, the diameter of the opening of the hole is about 0.5 mm to about 1.5 mm, more preferably about 0.6 mm to about 1.0 mm, typically about 0.8 mm, so that the adhesive as an anchor is less likely to come out of the hole in terms of the area of the contact surface between the hole and the adhesive, and sufficient adhesive strength between the solid object and the material can be achieved. In other words, if the diameter of the opening of the hole is small, the area of the contact surface between the hole and the adhesive becomes small, and sufficient adhesive strength cannot be obtained, and the adhesive as an anchor comes out of the hole. Conversely, if the diameter of the opening of the hole is too large, a large force will be applied from the adhesive as an anchor to one of the holes in the material, causing the hole in the material to crack or otherwise break, causing the adhesive as an anchor to come out of the hole.

(Solids 120)
Here, the solid body 120 is crystal glass. However, the solid body 120 is not limited to crystal glass, and may be other solid bodies such as glass, jewels, and crystals. Furthermore, the solid body 120 may be made of stone, pottery, porcelain, metal, or resin.

The solid object 120 is large enough to fit inside a cube with sides of approximately 10 mm. However, it may be large enough to extend beyond this cube.

Next, we will explain the manufacturing method of the product 100 shown in Figure 1.

Figures 3 to 7 are perspective views showing the main steps of the manufacturing method of the product 100. That is, Figure 3 shows the step of drilling holes in the adhesive region R1 of the material 110, Figure 4 shows the step of positioning the solid object 120 using the adhesive sheet 20, Figure 5 shows the solid object 120 placed on the adhesive region R1 via the adhesive 130, Figure 6 shows the step of heating the adhesive 130 in the heating chamber 30, and Figure 7 shows the step of removing the adhesive sheet 20.

The method for manufacturing this product 100 includes a bonding process for bonding a solid object 120 to a material 110.

Specifically, in the bonding process, first, as shown in FIG. 3, the material 110 is placed on the processing table 10, and a process of drilling holes in the bonding region R1 of the material 110 using a needle 11 is performed to form multiple holes 111. Note that for convenience of illustration, FIG. 3 shows a state in which four holes 111 are formed adjacent to each other on the front, back, left and right sides of the processing table 10 as the multiple holes 111, but the actual number of holes in one bonding region R1 is, as described above, for example, 16 to 40.

Next, the adhesive surface 20a of the adhesive sheet 20 is attached to the tip portions of multiple (here, two) solid objects 120 so that the adhesive sheet 20 supports the two solid objects 120. Then, each solid object 120 is aligned with the adhesive region R1 of the material 110 (see FIG. 4).

After aligning in this manner, the two solids 120 are placed on the adhesive region R1 of the material 110, so that the material 110 and the solids 120 are in a state in which the adhesive 130 is interposed between the adhesive region R1 of the material 110 and the bottom surface 120a of the solids 120 (see Figure 5).

Then, the solid object 120 is placed on the adhesive region R1 of the material 110 via the adhesive 130, and the two are moved into the heating chamber 30.

Specifically, the solid object 120 attached to the adhesive sheet 20 is placed on the material 110, and the material 110 together with the solid object 120 is placed on the heating table 30a in the heating chamber 30, and the solid object 120 is pressed against the material 110 via the adhesive sheet 20 by the pressing block 30b of the heating chamber 30.

In this state, the adhesive 130 adhered to the bottom surface 120a of the solid body 120 is heated in the heating chamber 30 so that the adhesive 130 melts between the solid body 120 and the material 110 (see FIG. 6).

At this time, the heating temperature can be appropriately determined by a person skilled in the art based on the properties of the hot melt adhesive and material used, but may be, for example, about 150°C to about 180°C, which is a temperature about 20°C to 50°C higher than the melting temperature of the adhesive 130. The heating time can also be appropriately determined by a person skilled in the art based on the properties of the hot melt adhesive and material used, but may be a short time, for example, 5 seconds or less.

In this state, the solid 120 is pressed against the material 110, so when the adhesive 130 attached to the bottom surface 120a of the solid 120 melts, the adhesive 130 penetrates into the multiple holes 111 formed in the adhesive region R1 of the material 110.

Next, the material 110 together with the solid object 120 is removed from the heating chamber 30 and placed on the processing table 10 to cool naturally. At this time, the adhesive 130 attached to the bottom surface 120a of the solid object 120 melts from there and solidifies in the state where it penetrates into the hole 111 of the material 110 (see FIG. 1(b)).

The adhesive sheet 110 is then removed from the solid object 120 to complete the product 100 (see Figure 7).

Example 1
In Example 1, the material 110 was 1 mm thick leather having a water-repellent surface, and the solid body 120 was crystal glass. The diameter of the contact area R1 of the material 110 was about 3.0 mm (area about ⁷ mm2), the number of holes 111 in the contact area R1 was about 16, and the holes were formed in the adhesive area with a needle having a diameter of 0.8 mm. In this case, the number of holes 111 per unit area ( ^mm2 ) was about 2.3.

The solid object 120 could be adhered to the water-repellent surface 101 of the material 110 with sufficient strength through simple work without compromising the aesthetic appearance of the product.

Example 2
In Example 2, the material 110 was 2 mm thick leather having a water-repellent surface, and the solid body 120 was crystal glass. The diameter of the contact area R1 of the material 110 was about 4.0 mm (area: about 13 ^mm2 ), the number of holes 111 in the contact area R1 was about 40, and the holes were formed in the adhesive area with a needle having a diameter of 0.8 mm. In this case, the number of holes 111 per unit area ( ^mm2 ) was about 3.2.

The solid object 120 could be adhered to the water-repellent surface 101 of the material 110 with sufficient strength through simple work without compromising the aesthetic appearance of the product.

Example 3
In Example 3, the material was cowhide with a thickness of about 1 mm, and several crystal glass pieces G of different sizes were used as solid objects. The size of each crystal glass piece used (corresponding to the diameter of the contact area) and the number of holes in the bonding area where each crystal glass piece was bonded were as follows:

Number of holes in contact area of about 7 mm diameter: 280 Number of holes in contact area of about 6 mm diameter: 212 Number of holes in contact area of about 5 mm diameter: 176 Number of holes in contact area of about 4 mm diameter: 104 Number of holes in contact area of about 3 mm diameter: 66 Number of holes in contact area of about 2 mm diameter: 33 Figure 8 shows the state in which crystal glass G of the above-mentioned size is bonded to cowhide with a thickness of about 1 mm, and it can be seen from this Figure 8 that the crystal glass G of any size, which is a solid object, is bonded to the cowhide material without impairing the aesthetic appearance. Figure 9 shows the pattern of holes in each bonding area. The black squares are the areas where the needle is pierced, and the lines show the trajectory of the needle. It has been confirmed in another test that the bonding can be performed with sufficient strength even if the specific arrangement of the holes is different from this (data not shown).

(Comparative Example 1)
The fabric was laminated on the surface of the water-repellent leather, and the fabric was then attached to the leather with an adhesive, and the crystal glass was then glued onto the fabric. In this case, the presence of the fabric marred the aesthetic look of the finished product, and the work was also cumbersome.

(Comparative Example 2)
A solid object was attached to the surface of the leather, which had a two-layer structure consisting of a water-repellent surface layer and a leather body. Specifically, a hole was made in the water-repellent surface layer to form a depression, and a crystal glass was attached in the depression.

With this method, the cut edges of the holes in the water-repellent surface layer were visible, and the color of the sides of the holes, which were a different color from the surrounding area, stood out, which marred the aesthetics of the finished product and made the process complicated.

As described above, the present invention has been illustrated using a preferred embodiment of the present invention, but the present invention should not be interpreted as being limited to this embodiment. It is understood that the scope of the present invention should be interpreted only by the scope of the claims. It is understood that a person skilled in the art can implement an equivalent scope based on the description of the specific preferred embodiment of the present invention and technical common sense from the description of the present invention. It is understood that the contents of the documents cited in this specification should be incorporated by reference to this specification as if the contents themselves were specifically described in this specification.

The present invention is useful for obtaining a product having a structure that allows a solid object to be easily and firmly adhered to the water-repellent surface of a material using an adhesive, and a method for manufacturing such a product.

REFERENCE SIGNS LIST 10 Processing table 11 Needle 20 Adhesive sheet 30 Heating chamber 30a Heating table 30b Pressing block 100 Product 101 Water-repellent surface 110 Material (leather)
110a Material body 110b Material thin film (coating film)
111 Hole 120 Solid 120a Bottom surface 130 Adhesive R1 Adhesive area

Claims (11)

a material having a water repellent surface, the water repellent surface including an adhesive region;
and a solid object having a bottom surface adhered to the adhesive area, the adhesive area having a plurality of holes, the adhesive area and the bottom surface of the solid object being adhered to each other by an adhesive. The article of claim 1 , wherein the adhesive area has an area of about 2 mm ² to about 80 mm ² . The article of claim 1 , wherein the adhesive area has about 2 holes/mm ² to about 11 holes/mm ² . The product according to claim 1, wherein the solid has a size that fits within a cube having a side length of approximately 10 mm. The article of claim 1 , wherein the bonded area is from about 3 mm ² to about 40 mm ² . The product of claim 1, wherein the adhesive area is substantially circular. The product of claim 1, wherein the solid is crystal glass. The product of claim 1, wherein the material has a thickness of about 0.3 mm to about 5 mm. The product according to claim 1, wherein the material is leather, synthetic leather, cloth, wood, paper or resin. The product of claim 1, wherein the hole penetrates the material. 1. A method of manufacturing a product, comprising:
The product includes a material having a water-repellent surface and a solid object having a bottom surface;
the water-repellent surface includes an adhesive region for adhering a bottom surface of the solid object;
The method comprises:
drilling a plurality of holes in the bond area of the material;
placing the solid object on the adhesive region via the adhesive, thereby interposing the adhesive between the adhesive region and a bottom surface of the solid object;
heating the adhesive so that the adhesive melts;
and adhering the solid object to the substrate by cooling the molten adhesive so that the adhesive solidifies.

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