Substrate and furniture

Abstract

To provide a base material contributing to expansion of reuse applications of coffee grounds.SOLUTION: The base material (10) has a plate shape, is mainly composed of coffee grounds, and has a coffee grounds exposed area (12) exposed to the outside air on at least a part of the surface.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to substrates and furniture. [Background technology]

[0002] The Sustainable Development Goals (SDGs) adopted by the United Nations include waste management and reduction as a goal under Goal 12, "Responsible Consumption and Production." [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] "Development of Molded Products from Coffee Extraction Residue by Wet Extrusion Method" (Takuma Matsuoka and Hiroshi Nonaka, Journal of the Japan Institute of Energy, 100, 55-61(2021)) Summary of the Invention [Problem to be solved by the invention]

[0004] Coffee is enjoyed by so many people that it is considered one of the world's three most popular beverages, and effectively reusing coffee grounds after brewing coffee has great social significance, including contributing to the SDGs mentioned above.

[0005] The present disclosure aims to provide substrates and furniture that contribute to expanding the use of recycled coffee grounds. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, a substrate according to one embodiment of the present disclosure is a plate-shaped substrate that is mainly composed of coffee grounds and has a coffee grounds exposed area on at least a part of its surface that is exposed to the outside air. [Effects of the Invention]

[0007] It is possible to provide a base material that contributes to expanding the uses for recycling coffee grounds. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a substrate according to the present disclosure. [Figure 2] FIG. 1 is a perspective view of a substrate according to the present disclosure. [Figure 3] FIG. 1 is a perspective view of a substrate according to the present disclosure. [Figure 4] 1 is a flowchart illustrating an example of a method for manufacturing a substrate according to the present disclosure. [Figure 5] 10A and 10B are diagrams illustrating a state in which a base material according to the present disclosure is incorporated into a table. [Figure 6] FIG. 1 is a schematic cross-sectional view of a granulator according to the present disclosure. [Figure 7] FIG. 1 is a schematic cross-sectional view of a fluidized bed dryer according to the present disclosure. [Figure 8] 1 is a table showing an example of particle size distribution when coffee grounds after a drying process are pulverized using a grinder manufactured by Dalton Co., Ltd. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present disclosure will be described in detail with reference to FIG.

[0010] [Coffee grounds] Coffee grounds are the wet coffee grounds and caffeine-containing residues that remain after brewing coffee. Coffee grounds are a by-product of the coffee extraction process. Because coffee grounds are typically discarded, effectively reusing them can contribute to waste management and reduction. Coffee grounds have traditionally been partially reused. However, they have typically been used as compost or in deodorizers, where the coffee grounds are used as is.

[0011] The present disclosure provides a substrate that enables the use of coffee grounds in applications different from conventional applications, and furniture that uses the substrate. A substrate 10 of the present disclosure will now be described with reference to FIG.

[0012] [Base material 10] Fig. 1 is a perspective view of a substrate 10 according to the present disclosure. XYZ coordinates are shown in Fig. 1. The XY plane formed by the X and Y axes coincides with the main surface of the flat substrate 10, and the Z axis perpendicular to the XY axes coincides with the thickness direction of the substrate 10.

[0013] The substrate 10 is formed by forming coffee grounds into a sheet (described later with reference to FIG. 4). Alternatively, the substrate 10 may be formed by drying layers of coffee grounds stacked one on top of the other. In either case, the substrate 10 is formed in a plate shape.

[0014] Furthermore, the substrate 10 has a coffee grounds exposed area 12 exposed to the outside air on at least a part of its surface. Since the substrate 10 is made of coffee grounds, the coffee grounds exposed area 12 is mainly made of coffee grounds.

[0015] The substrate 10 may be formed to have an appropriate length in the X and Y directions. The substrate 10 may be formed to have an appropriate length (thickness) in the Z axis direction. The substrate 10 has a thickness of, but is not limited to, 3 mm to 15 mm, for example.

[0016] The coffee grounds have a moisture content of 50% or more before being formed into the substrate 10, although this is not a limitation. The coffee grounds have a moisture content of 1% to 5% after being formed into the substrate 10, although this is not a limitation.

[0017] The coffee grounds do not need to be derived from a specific type of coffee bean, but may be a mixture of coffee grounds derived from multiple types of coffee beans.

[0018] The coffee grounds exposed region 12 is formed on at least a part of the surface of the substrate 10 and is mainly composed of coffee grounds. The coffee grounds exposed region 12 may be formed on the entire surface of the substrate 10. The coffee grounds exposed region 12 may be formed on the back surface and / or side surface of the substrate 10.

[0019] Coffee grounds have an aromatic effect of spreading the coffee aroma throughout a space and a deodorizing effect of absorbing and eliminating unpleasant odor components within a space. Therefore, by making the coffee grounds exposed area 12 mainly from coffee grounds, the base material 10 can provide the aromatic effect and deodorizing effect of the coffee grounds to the surrounding environment via the coffee grounds exposed area 12.

[0020] The substrate 10 may have a surface protective film 14 formed in an area where the coffee grounds exposed area 12 is not formed. A resin material (such as a fluororesin) may be used for the surface protective film 14. The surface protective film 14 prevents the coffee grounds that form the surface of the substrate 10 from being exposed to the outside air. Therefore, the surface protective film 14 does not provide the aroma and deodorizing effects of the coffee grounds to the surrounding environment in the area where the surface protective film 14 is formed.

[0021] The base material 10 has the following effect due to the surface protective film 14. Specifically, if a user touches a portion of the surface of the base material 10 where the coffee grounds are exposed, the color of the coffee grounds may adhere to the user. The surface protective film 14 prevents direct contact between the user and the base material 10, reducing the possibility that the color of the coffee grounds will adhere to the user.

[0022] 1, the surface protection film 14 is provided on the side surfaces of the base material 10 parallel to the XZ plane and the YZ plane. However, the surface protection film 14 may be provided on the main surface of the base material 10 parallel to the XY plane.

[0023] The uneven portion 16 is an unevenness provided on the surface of the coffee grounds exposed area 12. By having the uneven portion 16, the substrate 10 can increase the surface area of ​​the coffee grounds exposed area 12, and the coffee grounds located in the coffee grounds exposed area 12 can enhance the aroma and deodorizing effects. The shape, size, position, and / or depth of the unevenness may be determined appropriately taking into consideration the design of the substrate 10. The uneven portion 16 itself can enhance the design of the substrate 10. In other words, the uneven portion 16 can increase the value of the substrate 10 as an object.

[0024] [Base material 1] Next, the substrate 1 according to the present disclosure will be described with reference to Fig. 2. Fig. 2 is a perspective view of the substrate 1 according to the present disclosure.

[0025] The base material 1 includes a base material 10 (first layer) and a wooden board 20 (second layer) laminated on the base material 10 and having a strength higher than that of the base material 10. The base material 10 has been described with reference to Fig. 1, so a description thereof will be omitted here.

[0026] The wooden board 20 has a higher strength than the base material 10. The wooden board 20 has a higher strength than the base material 10 in terms of tensile strength, compressive strength, and shear strength. The wooden board 20 is not limited to a specific type, and may be, for example, beech, oak, teak, or cypress. The material of the wooden board 20 may be selected depending on the application of the base material 1, so a wide variety of base materials 1 can be provided to suit the preferences of users.

[0027] The wooden board 20 may be replaced with a material (such as metal, glass, resin, paper, or ceramic) that has higher strength than the base material 10. To enhance the design of the base material 1, the base material 1 may be constructed by combining a plurality of different materials listed here. In this case, the base material 1 may be realized in various ways, such as by forming at least one of the base material 10 and the wood 20 (or a material that replaces the wood 20) into a sheet shape.

[0028] The wooden board 20 may have the same length in the X and Y directions as the base material 10. The wooden board 20 may be thicker than the base material 10. This makes it easier for the base material 1 to ensure its strength as the base material 1 due to the wooden board 20 being thicker than the base material 10.

[0029] The wooden board 20 may have a thickness similar to that of the base material 10. Furthermore, since the wooden board 20 has a higher strength than the base material 10, it may have a thickness thinner than the base material 10.

[0030] The wooden board 20 is bonded to the base material 10 via an adhesive or the like. The adhesive may be, for example, a synthetic resin adhesive, an alkyd adhesive, an acrylic adhesive, or a hot melt adhesive.

[0031] The base material 1 effectively reuses coffee grounds by using coffee grounds as the base material 10 while ensuring the strength of the laminate with the wooden board 20. Furthermore, the base material 1 has a coffee grounds exposed area 12 (not shown) where the base material 10 is exposed to the outside air, and thus the coffee grounds can provide aroma and deodorizing effects through the coffee grounds exposed area 12.

[0032] [Base material 2] Next, the base material 2 according to the present disclosure will be described with reference to Fig. 3. Fig. 3 is a perspective view of the base material 2 according to the present disclosure. Note that the base material 10 and the wooden board 20 have been described with reference to Figs. 1 and 2, and therefore further description here will be omitted.

[0033] The substrate 2 includes a substrate 10 (first layer) and a wooden board 20 (second layer) that is laminated on the substrate 10 and has greater strength than the substrate 10. In the substrate 2, the wooden board 20 is a perforated board having one or more holes 22. A coffee grounds exposure area 12 (not shown) formed on the surface of the substrate 10 is exposed to the outside air through the holes 22. In other words, the wooden board 20 is a perforated board.

[0034] As a result, the base material 2 can provide aroma and deodorizing effects from the coffee grounds exposed area 12 through the holes 22 formed in the wooden board 20. Furthermore, the wooden board 20 reduces the visibility of the base material 10 due to the areas where the holes 22 are not formed, thereby improving the design of the base material.

[0035] The holes 22 may be formed regularly (such as in a grid pattern) or irregularly in the wooden board 20. The size, dimensions or number of the holes 22 may be determined appropriately.

[0036] The substrate 2 may be configured as follows. Specifically, the substrate 2 includes a substrate 10, a wooden board 20 (or a metal, glass, resin, paper, ceramic, or the like that replaces the substrate 20) that is laminated on one main surface of the substrate 10 and has a higher strength than the substrate 10, and a perforated plate having one or more holes that is laminated on the other main surface of the substrate 10. In this case, the wooden board 20 has no holes formed therein and is used primarily for the purpose of ensuring the strength of the substrate 2. The perforated plate is a plate-shaped perforated member that is so-called a punching board and is made of plywood, fiberboard, steel, or the like. The perforated plate is bonded to the substrate 10 via an adhesive (for example, a synthetic resin adhesive, an alkyd adhesive, an acrylic adhesive, or a hot melt adhesive) or the like.

[0037] Even in this case, the base material 2 can provide the above-mentioned effects (fragrance effect, deodorizing effect, and high designability).

[0038] Although not shown, the base material 2 may be processed by high frequency treatment to have a curved portion in a part of the base material 2. This also applies to the base material 1. This allows the base material 1 and the base material 2 to enhance the design of the base material 1 and the base material 2. Furthermore, the base material 1 and the base material 2 can also enhance the design of furniture into which the base material 1 and the base material 2 are incorporated.

[0039] [Method for manufacturing substrate] An example of a method for producing the substrate 1 according to the present disclosure will be outlined with reference to Fig. 4. Fig. 4 is a flowchart showing an example of a method for producing the substrate 1 according to the present disclosure.

[0040] First, in S40, the raw materials, coffee grounds and a binder, are charged into a mixer. In S40, in addition to the coffee grounds and the binder, water may also be charged into the mixer. The mixer may be, for example, a known mixer.

[0041] The coffee grounds are the coffee grounds remaining in the coffee filter, and may be prepared in various states, such as in the shape of the coffee filter (cone shape) or in a state where the original cone shape has been broken.

[0042] The binder is a component that binds the coffee grounds used as raw materials. The binder may be a common resin (such as polyvinyl chloride, polyethylene, or acrylic resin). The binder may be replaced with other materials that can bind the coffee grounds. For example, the binder may be cellulose and citric acid, which can bind the coffee grounds through a cross-linking reaction between the cellulose and citric acid. Using natural materials such as cellulose as a binder can provide a more environmentally friendly base material.

[0043] In S40, the coffee grounds, binder, and water may be added to the mixer in an appropriate ratio to bind the coffee grounds. For example, dried coffee grounds (water content: approximately 5%) are mixed with hydroxypropyl methylcellulose (HPMC) in a ratio of 8:2 to 5:5, and water is added in an amount of 70 to 200% of the solid weight.

[0044] Next, in S42, the coffee grounds and binder (hereinafter referred to as "mixture") discharged from the mixer are supplied to, but not limited to, a kneading extrusion molding machine.

[0045] More specifically, the mixture is fed to a feed section of a kneading extruder. Next, the mixture is rotated and advanced by a screw. The screw also serves to knead the mixture. At this time, the mixture may be vacuum degassed. Vacuum degassing serves to remove air and / or bubbles from the mixture, improve the uniformity of the mixture, improve the kneading efficiency, and / or prevent oxidation. Next, the mixture kneaded by the screw is pressurized toward a die (mold) and extruded out of the kneading extruder through multiple holes in the die.

[0046] Next, in S44, the mixture extruded out of the kneading extruder is formed into a thin sheet using, but not limited to, a roller or the like.

[0047] Then, in S46, the mixture formed into a sheet is placed on a conveyor and subjected to a drying process. The dried mixture is cut into an appropriate size and used as the substrate 10.

[0048] After the above steps S40 to S46, the preparation of the sheet-shaped coffee grounds is completed.

[0049] Forming the coffee grounds into a sheet provides various advantages, such as uniform quality and / or characteristics of the substrate 10, increased production efficiency of the substrate 10, and ease of processing the substrate 10 into different shapes and / or sizes.

[0050] Next, in S48, the wooden board 20 is prepared. The wooden board 20 is made of wood such as a beech board. The size of the wooden board 20 may be set in consideration of the shape, thickness, etc. of the base material 10.

[0051] Finally, in S50, the base material 10 and the wooden board 20 are laminated together to obtain the base material 1. The wooden board 20 may be replaced with a perforated board having holes 22 as described with reference to FIG.

[0052] By reusing coffee grounds through the above steps, a substrate 1 can be provided that contributes to expanding the applications for reusing coffee grounds.

[0053] 〔furniture〕 The base material 10, the base material 1, and the base material 2 according to the present disclosure may all be incorporated into furniture. An example of this will be described with reference to Fig. 5. Fig. 5 is a diagram illustrating the state when the base material 2 according to the present disclosure is incorporated into a table 50.

[0054] Table 50 includes legs 52. Base material 2 is incorporated into legs 52 on the underside, which is the inside of table 50. In other words, base material 2 is provided at a position different from the position where a user would normally touch table 50 in order to achieve the intended purpose of table 50.

[0055] Typically, the predetermined purpose of the table 50 is to place an object on the table surface of the table 50 or to have a person work on the table surface of the table 50. Therefore, it can be said that the backside of the legs 52 is a position different from a position that a user of the table 50 would normally touch. By providing the base material 2 in a position different from a position that a user of the table 50 would normally touch, it is possible to reduce the possibility that the color of coffee grounds will adhere to the user.

[0056] 5 shows an example in which the substrate 2 according to the present disclosure is applied to furniture, and the substrate 10, substrate 1, and substrate 2 may be used for furniture other than chairs (such as desks, shelf tops, storage fixtures, partitions, and chairs). For example, the substrate 2 can be used as a wall material, and can simultaneously provide a fragrance effect and a deodorizing effect to the surrounding environment.

[0057] Coffee grounds have an aromatic effect, spreading the aroma of coffee throughout a space, and a deodorizing effect, absorbing and eliminating unpleasant odor components within the space. By incorporating the base material according to the present disclosure into furniture, it is possible to provide furniture that has the aromatic and deodorizing effects of coffee grounds. In this way, a base material can be provided that contributes to expanding the uses (furniture, etc.) for reusing coffee grounds.

[0058] [Processing of raw materials (coffee grounds)] Although no specific treatment is required to use the coffee grounds according to the present disclosure as the substrate 10, etc., by reducing the particle size of the coffee grounds, a stronger, more stable-quality sheet made from coffee grounds and a substrate including such a sheet can be realized. The treatment for reducing the particle size of the coffee grounds will be explained below with reference to Figures 6 to 8.

[0059] [Granulation process] FIG. 6 is a schematic cross-sectional view of a granulator 60 according to the present disclosure.

[0060] The granulator 60 includes a screw 61 that sends coffee grounds introduced into the granulator 60 via a hopper (not shown) forward (towards a die 64, which will be described later), and a screw case 62 that holds the raw material (coffee grounds). The screw 61 causes the coffee grounds to reach an extrusion blade 63. The granulator 60 also includes a die 64 with multiple holes, and a die holder 65 that supports the die 64. The extrusion blade 63 presses the coffee grounds in the direction of the die 64, causing the coffee grounds to pass through the multiple holes in the die 64 to the outside of the granulator 60.

[0061] Any known granulator may be used as the granulator 60, but extrusion granulation is preferred because it is easy to obtain coffee grounds of the desired particle size and to control the particle size. The granulator 60 may be, for example, a front extrusion type, a dome extrusion type, a side extrusion type, or a vacuum extrusion type, but a front extrusion type or a dome extrusion type is preferred to reduce the effect of moisture contained in the coffee grounds. As an example, the granulator 60 may be an EXDF type granulator manufactured by Dalton Co., Ltd.

[0062] Granulation conditions can be set appropriately. For example, the die 64 may have an extrusion hole diameter of 3 mm to 10 mm. The screw 61 may rotate at a rotation speed of, for example, 60 rpm to 100 rpm.

[0063] The extrusion granulation device according to the present disclosure may be an extruder. Generally, an extruder has an internal screw, mixes raw materials, and extrudes the raw materials after subjecting them to processes such as heating and / or pressurization, thereby shaping the raw materials. The extruder may be either a single-screw or twin-screw type.

[0064] [Drying process] In the drying step, the coffee grounds granulated in the granulation step are dried to a predetermined moisture content. A known dryer may be used for the drying step, for example. An example of such a dryer will be described with reference to FIG. 7. FIG. 7 is a schematic cross-sectional view of a fluidized bed dryer 70 according to the present disclosure.

[0065] The fluidized bed dryer 70 shown in Fig. 7 is a continuous fluidized bed dryer. A known technology (device) may be adopted for the dryer. As an example, the fluidized bed dryer 70 may be a DFA type fluidized bed dryer manufactured by Dalton Co., Ltd.

[0066] Fluidized bed dryer 70 is a device that fluidizes and dries coffee grounds by blowing hot air or drying air into the bottom of the dryer, thereby obtaining dried coffee grounds. Fluidized bed dryer 70 has a main body 71, a blower 72, a heat exchanger 73, branch pipes 74, an exhaust fan 75, a cooling blower 76, a material inlet 77, a material outlet 78, and a fluidizing plate 79. Fluidizing plate 79 has many holes.

[0067] The main body 71 defines the outer shape of the fluidized bed dryer 70, and the interior where the drying air flows in is divided into multiple rooms. In the example of FIG. 7, the lower part of the main body 71 is divided into five rooms R1 to R5. A blower 72, a heat exchanger 73, and two branch pipes 74 are connected to R1 and R2. An exhaust fan 75 is provided above (on the exhaust side of) R1 and R2. The same configuration is applied to R3 and R4.

[0068] The blower 72 is provided below (on the intake side of) R1 and R2 and sends air outside the main body 71 to R1 and R2. The air sent to R1 and R2 is sucked in by the exhaust fan 75 and exhausted from the exhaust fan 75 to the outside of the main body 71.

[0069] The heat exchanger 73 warms the air sent from the blower 72. The air heated by the heat exchanger 73 is then sent to two branch pipes 74 connected to R1 and R2, respectively. The temperature of the air sent to the branch pipes 74 is set to, for example, 60°C to 120°C.

[0070] The air sent to the branch pipe 74 is then supplied to the inside of R1 and R2, passes through the fluidization plate 79, passes through the coffee grounds being transported in the direction from the material inlet 77 to the material outlet 78, and is exhausted from the exhaust fan 75.

[0071] The above description may be similarly applied to R3, R4, and the blower 72 and the like disposed below R3 and R4, and therefore the description thereof will be omitted.

[0072] R5 is located between R4 and the material outlet 78. A cooling fan 76 is provided below R5. No heat exchanger 73 is provided between the cooling fan 76 and R5. Therefore, the air taken in from the cooling fan 76 is supplied to R5 without being heated, passes through the fluidization plate 79, passes through the coffee grounds being transported to the material outlet 78, and is exhausted from the exhaust fan 75.

[0073] The coffee grounds are supplied into the main body 71 from the material inlet 77 and are transported by overflow from the material inlet 77 toward the material outlet 78, during which time they dry. The dried coffee grounds are then discharged from the material outlet 78 to the outside of the main body 71. It takes, for example, 30 to 40 minutes for the coffee grounds with a high moisture content to become dried coffee grounds and be discharged from the material outlet 78 to the outside of the main body 71. In this way, while passing from the material inlet 77 to the material outlet 78, the coffee grounds are exposed to the drying air warmed by the heat exchanger 73, which reduces their moisture content and turns them into dried coffee grounds.

[0074] As mentioned above, coffee grounds usually have a moisture content of 50% or more. These coffee grounds change into coffee grounds with a desired moisture content depending on the intended use, depending on the time they pass through the fluidized bed dryer 70, the temperature at which the external air is heated by the heat exchanger 73, and other factors. Therefore, the moisture content of the coffee grounds discharged from the material outlet 78 is not uniquely determined.

[0075] The coffee grounds become hot and dry as they pass from the material inlet 77 to the material outlet 78, but as they pass through R5, they are exposed to the air that has entered the main body 71 from the cooling blower 76 and the temperature drops. The cooled coffee grounds are then carried out from the material outlet 78 to the outside of the main body 71.

[0076] The fluidized bed dryer 70 is a device that utilizes the excellent mixing, gas contact, and heat transfer properties of a fluidized bed for drying. As a result, the fluidized bed dryer 70 quickly transfers heat between the drying air and the coffee grounds. This allows the fluidized bed dryer 70 to prevent uneven drying of the coffee grounds and to stably process large amounts of coffee grounds.

[0077] [Crushing process] In the grinding process, the dried coffee grounds obtained in the drying process are ground to a predetermined standard. For example, a known grinder may be used for the grinding process. One example is the "IM-150(G)" manufactured by Dalton Co., Ltd.

[0078] The grinder finely grinds the material (dried coffee grounds) by impact and friction between fixed pins and high-speed rotating pins. More specifically, the dried coffee grounds are fed into the material inlet and are finely ground by impact and friction between the rotating grinding pins rotating at high speed and the fixed grinding pins.

[0079] In the crusher, the crushed product is discharged without retention, so it is less susceptible to the effects of heat.

[0080] An example of particle size distribution will be explained using Figure 8. Figure 8 is a table showing an example of particle size distribution when coffee grounds after the drying process are ground using a grinder manufactured by Dalton Co., Ltd. ("IM-150(G)"). The upper part of the table shows the particle size distribution of the coffee grounds before the grinding process, and the lower part of the table shows the particle size distribution of the coffee grounds after the grinding process. The grinder's high-speed rotating pin is set to a rotation speed of 14,000 rpm. The coffee grounds are adjusted to have a moisture content of 3 to 4%.

[0081] As shown in Figure 8, before the grinding process, the coffee grounds had a particle size of 500 μm or more, which accounted for 32.1% (= 4.4 + 13.5 + 14.2) of the total. In contrast, after the grinding process, the coffee grounds had a particle size of 500 μm or more, which was significantly reduced to 5.0% of the total. By appropriately adjusting the rotation speed of the grinder's high-speed rotating pins, the coffee grounds can be ground into smaller or larger particles.

[0082] According to the above configuration, coffee grounds with a high moisture content are granulated and dried to an easily drying state, and the dried coffee grounds are then pulverized to a desired predetermined standard in a pulverization process. By reducing the particle size of the coffee grounds in this way, the strength and quality of the coffee grounds sheet made from the coffee grounds can be improved. As a result, a substrate containing a coffee grounds sheet with higher strength and more stable quality can be realized. This also makes it possible to reuse the coffee grounds in applications that were previously unimaginable. Examples of such applications include the aforementioned applications for substrates and furniture.

[0083] (summary) The substrate according to the first aspect of the present disclosure is a plate-shaped substrate that is mainly made of coffee grounds and has a coffee grounds exposed area on at least a part of its surface that is exposed to the outside air.

[0084] Coffee grounds have an aromatic effect that spreads the coffee aroma throughout a space and a deodorizing effect that adsorbs and removes unpleasant odor components within the space. By having the above-described configuration, the substrate according to aspect 1 of the present disclosure can provide the aromatic effect and deodorizing effect of the coffee grounds through the coffee grounds exposed area. Thus, the substrate according to aspect 1 of the present disclosure can provide a substrate that contributes to expanding the reuse applications of coffee grounds by reusing the coffee grounds.

[0085] The substrate according to aspect 2 of the present disclosure is the same as that of aspect 1, and includes a first layer and a second layer laminated on the first layer and having a strength higher than that of the first layer, and the coffee grounds exposure area is provided in the first layer.

[0086] According to the above-mentioned configuration, the strength of the substrate can be ensured by the second layer, and the life of the substrate can be extended.

[0087] A substrate according to a third aspect of the present disclosure is the substrate of the second aspect, wherein the second layer is a perforated plate having one or more holes, and the coffee grounds exposed area is exposed to the outside air through the one or more holes.

[0088] According to the above-described configuration, the substrate of the present disclosure can provide aroma and deodorizing effects from the surface coffee grounds exposed area through one or more holes formed in the perforated plate. Furthermore, the perforated plate can improve the design of the substrate because the visibility of the first layer is reduced by the area without holes.

[0089] The substrate according to a fourth aspect of the present disclosure is any one of the first to third aspects, wherein at least a portion of the surface excluding the coffee grounds exposed region is covered with a surface protective film.

[0090] According to the above configuration, the surface protective film prevents direct contact of the first layer by the user of the base material, thereby reducing the possibility that the color of the coffee grounds will adhere to the user.

[0091] A substrate according to a fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the coffee grounds exposed area has an uneven surface.

[0092] According to the above-mentioned configuration, the surface area of ​​the coffee grounds exposed region is increased, and the aroma and deodorizing effects of the coffee grounds located in the coffee grounds exposed region can be enhanced.

[0093] A furniture according to a sixth aspect of the present disclosure includes the base material according to any one of the first to fifth aspects.

[0094] According to the above configuration, the furniture according to the sixth aspect of the present disclosure can achieve the same effects as those achieved by the first to fifth aspects described above.

[0095] The furniture according to aspect 7 of the present disclosure is the same as aspect 6, except that the base material is provided at a position different from the position where a user would normally touch the furniture in order to achieve the intended purpose of the furniture.

[0096] According to the above configuration, the furniture according to the present disclosure can reduce the possibility of the color of coffee grounds adhering to the user.

[0097] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the disclosed technical means are also included in the technical scope of the present disclosure. Furthermore, new technical features can be formed by combining the disclosed technical means. [Explanation of symbols]

[0098] 1, 2, 10 Base material 12 Coffee grounds exposed area 16 Uneven part 20 wood board 50 tables 60 Granulator 61 Screw 62 Screw Case 63 Extrusion blade 64 dice 65 Die holder 70 Fluidized bed dryer 71 Main Unit 72 Blower 73 Heat exchanger 74 Branch Pipe 75 Exhaust fan 76 Cooling blower 77 Material input port 78 Material outlet 79 Fluid Plate

Claims

1. A plate-shaped substrate, A substrate that is mainly composed of coffee grounds and has a coffee grounds exposed area on at least a portion of its surface that is exposed to the outside air.

2. a first layer; and a second layer laminated on the first layer and having a strength higher than that of the first layer; The substrate of claim 1 , wherein the coffee grounds exposed area is provided in the first layer.

3. the second layer is a perforated plate having one or more holes; The substrate of claim 2 , wherein the coffee grounds exposed area is exposed to the atmosphere through the one or more holes.

4. The substrate according to claim 1 or 2, wherein at least a portion of the surface excluding the coffee grounds exposed region is covered with a surface protective film.

5. The substrate according to claim 1 or 2, wherein the coffee grounds exposed area has an uneven surface.

6. A piece of furniture comprising the substrate of claim 1 or 2.

7. 7. The furniture of claim 6, wherein the base material is provided at a position different from a position where a user would normally touch the furniture in order to achieve a predetermined purpose of the furniture.

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