Recycled board and method for manufacturing the same

Abstract

The present invention provides recycled boards and a method for manufacturing the same. [Solution] The recycled board comprises multiple fiber sheets and an adhesive. The multiple fiber sheets are taken from recycled fabric, and each has an average diameter of 10 mm or less. The adhesive comprises at least one resin that hardens under the action of temperature, pressure, a curing agent, light, or a combination thereof, and is mixed with the multiple fiber sheets and molded. The total weight of the multiple fiber sheets accounts for 50-80 wt% of the weight of the recycled board, and the weight of the adhesive accounts for 20-50 wt% of the weight of the recycled board.

Description

Technical Field

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[0001] The present invention relates to a recycled board, and particularly to a recycled board manufactured using recycled fabric.

Background Art

[0002] Industrialization and fast fashion have brought about a large quantity and variety of textile products such as ready-to-wear clothes. In recent years, as environmental protection and resource sustainability have become emphasized, methods for recycling out-of-season and discarded textile products have been developed. However, whether recycled products have market value, sufficient practicality, and an economical and reliable manufacturing method affects their success.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The present invention provides a recycled board that promotes resource recycling and utilization and achieves waste reduction effects.

Means for Solving the Problems

[0004] The recycled board provided by the present invention has a rich appearance and diverse uses, and has a high market value because the manufacturing process is simple.

[0005] To achieve one, some, or all of the above objects, or other objects, the recycled board provided by an embodiment of the present invention includes a plurality of fiber sheets and an adhesive. The plurality of fiber sheets are collected from recycled fabric, and each has an average diameter of 10 mm or less. The adhesive includes at least one resin that cures under the action of temperature, pressure, a curing agent, light, or a combination thereof, and is mixed with the plurality of fiber sheets and formed. The total weight of the plurality of fiber sheets accounts for 50 to 80 wt% of the weight of the recycled board, and the weight of the adhesive accounts for 20 to 50 wt% of the weight of the recycled board.

[0006] In one embodiment of the present invention, the shape of each fiber sheet described above is a variety of geometric shapes and irregular shapes, and the average diameter includes the lengths in multiple directions on each fiber sheet.

[0007] To achieve one, part, or all of the above objectives, or any other objective, a recycled board provided in one embodiment of the present invention is manufactured by a method comprising the following steps: Fabric recycling and crushing step: The crushing step includes crushing the recycled fabric to obtain a fiber colorant, the fiber colorant consisting of a plurality of fiber sheets, each with an average diameter of 10 mm or less. Dry stirring step: The dry stirring step includes dispersing the plurality of fiber sheets of the fiber colorant. Mixing and stirring step: The mixing and stirring step includes adding an adhesive and mixing the adhesive with the dispersed fiber colorant so that the adhesive penetrates the plurality of fiber sheets sufficiently. The total weight of the adhesive accounts for 20-50 wt% of the weight of the mixture, and the total weight of the dispersed fiber colorant accounts for 50-80 wt% of the weight of the mixture. Material input step includes putting the mixture of the adhesive and plurality of fiber sheets into a mold. Rolling step includes rolling the mixture of the adhesive and plurality of fiber sheets so that the mixture fills the mold. The hot pressing process involves closing a mold at a predetermined temperature to hot-form the mixture.

[0008] This invention contributes to improving the efficiency of resource recycling and reducing waste by employing multiple fiber sheets in which the weight of the recycled board accounts for 50-80 wt% of the total weight. The crushing process in the manufacturing method yields fiber sheets with an average diameter of 10 mm or less, and a subsequent dry stirring process gives the resulting recycled board a rich appearance and high market value. The recycled board is manufactured through processes such as mixing, stirring, rolling, and hot pressing, and uses an adhesive containing a resin that hardens under the action of temperature, pressure, a curing agent, light, or a combination thereof, with an adhesive content of 20-50 wt%. As a result, the recycled board has a range of strengths and can be used for a variety of applications.

[0009] To provide a clearer understanding of the above-mentioned or other objectives, features, and advantages of the present invention, examples are given below and described in detail with reference to the attached drawings. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic flowchart of the method for manufacturing a recycled board in one embodiment of the present invention. [Figure 2] Figure 2 is a three-dimensional view of a mold in one embodiment of the present invention. [Figure 3] Figure 3 is a side view showing the manufacturing method of a recycled board according to one embodiment of the present invention. [Figure 4] Figure 4 is another side view of the manufacturing method for recycled boards according to one embodiment of the present invention. [Figure 5] Figure 5 is another side view showing the manufacturing method of a recycled board according to one embodiment of the present invention. [Figure 6] Figure 6 is a schematic top view of a portion of a recycled board in one embodiment of the present invention. [Modes for carrying out the invention]

[0011] This invention provides recycled boards manufactured using recycled fabrics and methods for manufacturing the same. The fabrics include, but are not limited to, clothing, curtains, bedding, towels, and cloth covers made from natural fibers, artificial fibers, or combinations thereof. Natural fibers include, but are not limited to, cotton, linen, silk, wool, or combinations thereof, while artificial fibers include, but are not limited to, nylon, polyester, acrylic fibers, acetate fibers, or combinations thereof. By using recycled fabrics, the recycled boards of this invention contribute to waste reduction, and the diverse sources of recycled fabrics allow for the provision of recycled boards with diverse compositions and rich appearances. The recycled boards of this invention are not limited to flat boards with specific lengths, widths, and heights, but may take other shapes. The recycled boards of this invention can be used, for example, as building materials, furniture, and decorative items, and have applications such as partitions, storage, load-bearing, and displays, but are not limited to these.

[0012] As shown in Figure 1, the method for manufacturing a recycled board in one embodiment of the present invention includes the following steps. Step S210: A step of recycling and crushing the fabric. The crushing step includes crushing the recycled fabric to obtain a fiber colorant, the fiber colorant consisting of a plurality of fiber sheets, each with an average diameter of 10 mm or less. Step S220: A dry stirring step includes dispersing the plurality of fiber sheets of the fiber colorant. Step S230: A mixing and stirring step includes adding an adhesive and mixing the adhesive with the dispersed fiber colorant so that the adhesive penetrates the plurality of fiber sheets sufficiently, the total weight of the adhesive accounts for 20-50 wt% of the weight of the mixture, and the total weight of the dispersed fiber colorant accounts for 50-80 wt% of the weight of the mixture. Step S240: A material input step includes putting the mixture of the adhesive and the plurality of fiber sheets into a mold. Step S250: A rolling step includes rolling the mixture of the adhesive and the plurality of fiber sheets so that the mixture fills the mold. Step S260: The hot pressing process includes the step of hot-forming the mixture by closing the mold at a predetermined temperature.

[0013] Step S210: The recycled fabric in step S210 can be obtained directly from raw material suppliers or from the sales channels of clothing, curtains, bedding, towels, and fabric covers as described above, but is not limited to these. The recycled fabric can be pre-treated before entering the crushing process. Pre-treatment includes, but is not limited to, fabric classification, removal of auxiliary materials, cutting to large sizes, and inventory management of incoming materials. Fabric classification can be appropriately classified, for example, based on fiber composition or color. Removal of auxiliary materials includes, but is not limited to, removing materials other than textile products from the fabric, such as buttons, zippers, and decorations. Cutting to large sizes refers to cutting large areas of fabric into specific sizes first. Inventory management of incoming materials allows for efficient progress in subsequent processes by assigning numbers to the classified fabrics and then entering those numbers into the inventory management system.

[0014] For example, recycled fabric includes first recycled fabric and second recycled fabric. The first and second recycled fabrics may differ in color, but are not limited to this. In some embodiments, a third recycled fabric may be further included, which differs in color and / or fiber composition from the first and second recycled fabrics. The first, second, and third recycled fabrics are each assigned a number after pretreatment. For example, the numbers can be used to retrieve relevant information about the first, second, and third recycled fabrics from an inventory management system, which may include, but are not limited to, fiber type, composition, color, and inventory quantity. It can also be seen that there are no restrictions on the quantity or type of recycled fabric.

[0015] In a preferred embodiment of the present invention, the pulverization step involves pulverizing the recycled fabric using a pulverizing sieve to obtain a fiber colorant. The pulverizing sieve refers to a sieve mesh used in conjunction with the pulverizer. Preferably, the pulverizer is equipped with blades, which rotate at high speed to generate shear force between themselves and the wall, thereby cutting and tearing the fabric and pulverizing it into sheet-like fibers. The pulverized sheet-like fibers are then sieved to an appropriate size using the pulverizing sieve.

[0016] Therefore, the fiber colorant is composed of multiple fiber sheets, and in preferred embodiments of the present invention, the mesh size of the crushing sieve substantially affects the size of the fiber sheets. For example, with a 10 mm mesh, it is preferable that the average diameter of the fiber sheets be 10 mm or less, and with a 5 mm mesh, it is preferable that the average diameter of the fiber sheets be 5 mm or less. For example, the first fiber colorant is obtained from the first recycled fabric using a crushing sieve with a 10 mm mesh, and the second fiber colorant is obtained from the second recycled fabric using a crushing sieve with a 5 mm mesh. Thus, the first and second fiber colorants differ at least in their color number and the size of the fiber sheets. In other words, the first fiber sheets are generally larger than the second fiber sheets.

[0017] The shapes of fiber sheets include various geometric shapes such as circles, rectangles, parallelograms, trapezoids, triangles, and polygons, and also include irregular shapes. In embodiments of the present invention, the fiber sheet has lengths in multiple directions, and the aforementioned "average diameter of the fiber sheet" refers to the respective lengths in multiple directions on each fiber sheet. For example, if the fiber sheet is a parallelogram, its average diameter is the lengths of the four different sides and the lengths of the two diagonals, but is not limited to these. However, it should be noted that fibers are usually flexible and bendable, and furthermore, the composition and weaving method of the fibers differ, so even when adhering to the principles of "average diameter of fiber sheet is 10 mm or less" or "average diameter of fiber sheet is 5 mm or less," exceptions exist.

[0018] Step S220: In the dry stirring step S220, entanglement, mutual adsorption, and aggregation between fiber sheets in the fiber colorant are removed, and they are evenly dispersed, allowing subsequent processes to proceed efficiently. In the embodiment of the present invention, fiber sheets with different fiber colorants can also be dispersed simultaneously in the dry stirring step. For example, depending on the appearance, texture, and application of the recycled board, the first fiber colorant and the second fiber colorant can be distributed proportionally and dispersed simultaneously so that the first fiber sheet and the second fiber sheet are evenly mixed. This can, for example, achieve the effect of two-color mixing.

[0019] In a preferred embodiment of the present invention, a clawed bolt is used in the dry stirring process. The clawed bolt is characterized by having multiple claws mounted on the bolt, with an iron plate welded to the tip of each claw. During dry stirring, the clawed bolt causes friction between the fiber colorant and the inner wall of the dry stirring tank, generating shear force, thereby removing electrostatic adsorption in the fiber colorant, creating a shearing effect on the fiber colorant, destroying the crosslinking phenomenon caused by the fibers, reducing entanglement and aggregation between fiber sheets, and dispersing them evenly. When the dry stirring process is performed simultaneously for the first fiber colorant and the second fiber colorant, the first fiber sheet and the second fiber sheet are placed together in the tank, then dry stirring and mixing are performed with the clawed bolt to disperse and obtain evenly mixed first and second fiber sheets. The time required for the dry stirring process ranges from several minutes to several tens of minutes and can be adjusted according to, for example, the amount of fiber colorant and the composition of the fibers. In a preferred embodiment of the present invention, many dry stirring processes are performed for at least 10 minutes.

[0020] Step S230: In the mixing and stirring step of step S230, the step of adding an adhesive, mixing the adhesive with the dispersed fiber colorant, and allowing the adhesive to sufficiently penetrate into the fiber sheet in the fiber colorant is included. In an embodiment of the present invention, the adhesive contains at least one type of resin that can be cured under the action of temperature, pressure, a curing agent, light, or a combination thereof. Preferably, the adhesive is selected from an epoxy resin, a polyurethane resin, a resin having a specific gravity of 1.0 to 1.2 and a viscosity of 1000 to 2000 cps at 25°C, a resin having a specific gravity of 0.9 to 1.1 and a viscosity of 60 to 180 cps at 25°C, a resin having a solid content of 80 to 100%, or a combination thereof. The viscosity can be obtained by measurement based on, for example, the ASTM D2393 standard, the specific gravity can be obtained by measurement based on, for example, the ASTM D1475 standard, and the solid content can be obtained by measurement based on, for example, the ASTM D1259 standard, but is not limited thereto. In some embodiments, for example, epoxy resin AB can be used as the adhesive, where agent A (main agent) is an epoxy resin and agent B is a curing agent, and the two can be cured by mixing. Further, the degree of curing varies depending on the amount of epoxy resin used, the amount of curing agent used, and whether heating, pressurization, or irradiation is performed during curing. Furthermore, the heating temperature, heating time, pressure, pressurization time, irradiation wavelength, etc. can also affect the degree of curing. In a preferred embodiment of the present invention, the heating and pressurization steps can be used to shorten the curing time, increase the density of the molded product, and increase the physical strength.

[0021] In the embodiments of the present invention, the usage amount of the adhesive accounts for 20 to 50 wt% of the total weight of the adhesive and the fiber colorant, and the usage amount of the fiber colorant accounts for 50 to 80% of the total weight. The ratio between the two varies depending on the use of the recycled board. For example, a recycled board for general use is manufactured using 30 wt% of the adhesive and 70 wt% of the fiber colorant. When used as a load-bearing structure such as furniture, the amount of the adhesive can be increased, for example, to 40 wt%, and conversely, when not requiring a load such as a decorative board, the amount of the adhesive can be reduced, for example, to 20 wt%. However, based on the preferred selection of the adhesive of the present invention, the usage amount of the adhesive for the recycled board can consistently be made less, that is, the usage amount of the fiber colorant becomes more. Therefore, the present invention can more effectively achieve resource recycling.

[0022] In the embodiments of the present invention, the mixing and stirring process further includes a process of mixing and stirring the adhesive and the dispersed fiber colorant in at least two directions. A bolt with claws can also be used in the mixing and stirring process. In that case, the dispersed fiber colorant after the dry stirring process is left in the original tank, and the adhesive is added thereto. Then, the bolt with claws is operated to mix and stir clockwise, for example, for several minutes (5 to 10 minutes), and then operated in two directions such as counterclockwise for the same time. Repeat this until it is completely mixed. Also, the bolt with claws can further perform a reciprocating motion with respect to the bottom of the tank, thereby hitting the mixture downward to sufficiently penetrate the adhesive into the fiber sheet and ensuring the quality of the molded product by completely covering the fiber sheet with the adhesive.

[0023] Step S240: Step S240, the material input step, includes the preparation of the mold and the process of placing the mixture of adhesive and fiber sheet from step S230 into the mold. The mold can be selected according to the expected shape of the recycled board, and for material selection, well-known techniques in the molding industry can be referenced, and a detailed explanation is omitted here, but heat-resistant materials are desirable. As shown in Figure 2, in some embodiments of the present invention, the mold 40 has a base plate 410 and side walls 420 surrounding it. The base plate 410 can have various shapes, and the height of the side walls 420 is preferably uniform, but not limited thereto. In the material input step, it is preferable, but not limited thereto, to fill the mold 40 with substantially equal amounts of the mixture based on its volume. In the material input step, the mixture should be distributed as evenly as possible within the mold 40, for example, by evenly spreading the mixture within the mold 40, so that the process can proceed smoothly to the subsequent steps.

[0024] Step S250: Step S250, the rolling process, includes rolling the mixture of adhesive and fiber sheet to fill the die. The rolling process can be carried out substantially by means of rolls, rollers, round bars, cylinders, etc., and is not limited to manual or mechanical operation. Furthermore, the rolling process includes multiple operating stages. First, to ensure that the introduced mixture is completely into the die, the operation involves rolling a roll over the mixture to compress it and put it into the die. Preferably, the rolling motion of the roll is parallel to the base plate of the die (also called horizontal rolling), meaning that the roll rolls horizontally, pushing the mixture into the die and flattening it at the same time. The roll can roll in two directions, for example, in an almost x-direction, it can perform a reciprocating motion, rolling from one end of the die to the opposite end and then back to the original end. Alternatively, it can reciprocate alternately from the center of the die to the opposing ends, for example, rolling horizontally from the center of the die to the left end, returning to the center after reaching the left end, and then rolling back to the right end. Alternatively, it could roll horizontally forward from the center, reach the front end and then return to the center, then roll horizontally backward to reach the rear end and then return to the center.

[0025] As shown in Figure 3, in some embodiments of the present invention, the roll 50 has a specific length and is placed on the side wall 420 so as to straddle the die 40. As it rolls back and forth as described above, as shown in Figure 4, the roll 50 gradually pushes the input mixture 60 into the die 40 and then rolls the input mixture 60 so that it does not rise higher than the top of the side wall 420. By pressing firmly against the side wall 420 of the die 40, the roll 50 can roll the input mixture 60 so that it is level with the top of the side wall 420 and flattened. Finally, the rolling by the roll 50 fills the die 40 with the mixture 60, allowing it to adhere tightly to the base plate 410 and the side wall 420, and the rolling process is completed.

[0026] In some embodiments of the present invention, step S250 can be performed entirely by mechanical operation. For example, by using a numerically controlled roller and setting the height of the roller relative to the mold 40, the introduced mixture 60 is gradually pushed into the mold 40, leveled, and filled to the mold 40. The height to be set is, for example, that the cross-section of the bottom surface of the numerically controlled roller is 10 mm from the mold 40 in the first stage, 5 mm in the second stage, and 0 mm in the third stage. That is, in the first stage, the introduced mixture 60 has not yet entered the mold 40 completely and is protruding above the mold 40, so the numerically controlled roller can contact the introduced mixture 60 at 10 mm above the mold 40 and perform rolling. As rolling progresses, the mixture 60 gradually enters the mold 40 and the protrusion above the mold 40 decreases, so in the second stage, the numerically controlled roller is adjusted to 5 mm above the mold 40 and contacts the introduced mixture to continue rolling. In the third stage, numerically controlled rollers flatten the introduced mixture 60 as it rolls along the top of the die 40, so that it aligns with the top edge of the side wall 420. This completes the rolling process. The aforementioned set heights and three stages are merely examples, and the present invention is not limited to these.

[0027] Step S260: Step S260, the hot pressing process, includes the process of hot-forming the mixture by closing the mold at a predetermined temperature. The temperature conditions for the hot pressing process are 90 to 110°C, preferably 90°C, and the pressure conditions are 100 to 120 tons, usually 120 tons. The time is several tens of minutes. Generally, the hot pressing time is 30 to 60 minutes. Furthermore, the hot pressing time varies with temperature, for example, 40 minutes at 90°C, 30 minutes at 100°C, and 20 minutes at 110°C, but is not limited to these. After the hot pressing process, the molding is completed by cooling, and the mold is removed to obtain a recycled board. In preferred embodiments of the present invention, the cured adhesive is colorless and transparent, allowing the color, texture, shape, or combination thereof of the embedded fiber sheets to be exposed.

[0028] The present invention further provides a recycled board manufactured by the method described above. Figure 6 is a schematic top view of a recycled board in an embodiment of the present invention. As shown in Figure 6, the recycled board 10 includes a plurality of fiber sheets 100 and an adhesive 300. The fiber sheets 100 are obtained from recycled fabric, and each has an average diameter of 10 mm or less, for example, 10 mm or 5 mm. The fiber sheets have various geometric and irregular shapes and lengths in multiple directions. The average diameter is the respective length in multiple directions on each fiber sheet. As shown in Figure 6, for example, fiber sheet 100a is approximately circular, and its average diameter includes the diameter in each direction, with a diameter of 10 mm. Fiber sheet 100b is approximately square, and its average diameter is the length of the diagonal of the square, with a diagonal length of 5 mm. Fiber sheet 100c is approximately triangular, and its average diameter is the length of the side of the triangle, with a side length of 5 mm. In a preferred embodiment of the present invention, the average diameter of the fiber sheets is further the maximum length of each fiber sheet. For a circle, the diameter is the length of the diagonals; for a square, the diagonals are the length of the sides; and for an equilateral triangle, the side lengths are the lengths of the sides.

[0029] The adhesive 300 contains at least one resin that can be cured under the action of temperature, pressure, a curing agent, light, or a combination thereof, and is a cured resin. The adhesive 300 is mixed with a plurality of fiber sheets and molded. Depending on the molding conditions, the adhesive 300 hardens. In some embodiments of the present invention, the adhesive 300 is mixed with a plurality of fiber sheets 100 and thermoformed. During mixing, the adhesive 300 penetrates the fiber sheets 100 sufficiently so that their surface is covered with the adhesive 300. During thermoforming, the temperature used is preferably 90°C or higher, and hot molding is performed by applying pressure. As shown in Figure 6, the cured adhesive 300 is preferably colorless and transparent, so that the fiber sheets 100 mixed in the adhesive 300 are visible. Because the adhesive 300 penetrates sufficiently during the manufacturing process, it is preferable that the fiber sheets 100 are not exposed on the surface of the recycled board 10, and that the color, texture, shape, etc. of the fiber sheets 100 can be exhibited.

[0030] In summary, the embodiments of the present invention utilize multiple fiber sheets in which the weight of the recycled board accounts for 50-80 wt% of the total weight, meaning that a large amount of recycled fabric is used, thus contributing to improved efficiency in resource recycling and waste reduction. Fiber sheets are obtained through the crushing process of the manufacturing method, and the shape of the fiber sheets is varied in geometric and irregular shapes, and they have lengths in multiple directions. Furthermore, because there is a dry stirring process after the crushing process, the recycled boards in the embodiments of the present invention have a rich appearance and high market value. The recycled boards are manufactured through processes such as mixing, stirring, rolling, and hot pressing, and the adhesive content is 20-50 wt%. The adhesive contains a resin that hardens under the action of temperature, pressure, curing agent, light, or a combination thereof. Therefore, the recycled boards in the embodiments of the present invention have strength that can be used for various applications such as partitions, storage, loads, and displays, but are not limited to these.

[0031] Although the present invention has been disclosed above using examples, the present invention is not limited thereto. Those skilled in the art can make several modifications without departing from the spirit of the invention. Accordingly, the scope of protection of the present invention is limited by the appended claims. [Explanation of symbols]

[0032] 10: Recycle Board 100, 100a, 100b, 100c: Fiber sheets 300: Adhesive 40: Mold 410: Base plate 420: Side wall 50: Roll 60: (The added) mixture x: direction S210~S260: Step

Claims

1. It is a recycled board, Multiple fiber sheets, each with an average diameter of 10 mm or less, are extracted from recycled fabric. An adhesive comprising at least one resin that hardens under the action of temperature, pressure, a curing agent, light, or a combination thereof, which is mixed with the plurality of fiber sheets and molded, A recycled board characterized in that the total weight of the plurality of fiber sheets accounts for 50 to 80 wt% of the weight of the recycled board, and the weight of the adhesive accounts for 20 to 50 wt% of the weight of the recycled board.

2. The recycled board according to claim 1, characterized in that the shape of each of the plurality of fiber sheets is a variety of geometric shapes and irregular shapes, and the average diameter includes the length in multiple directions on each of the plurality of fiber sheets.

3. The recycled board according to claim 2, characterized in that the geometric shape includes circles, rectangles, parallelograms, trapezoids, triangles, and polygons.

4. Furthermore, the recycled board according to claim 1, characterized in that the average diameter of each of the plurality of fiber sheets is 5 mm or less.

5. Furthermore, the recycled board according to claim 1, characterized in that the total weight of the plurality of fiber sheets accounts for 60 to 80% of the weight of the recycled board.

6. The recycled board according to claim 1, characterized in that the adhesive is selected from epoxy resin, polyurethane resin, resin having a specific gravity of 1.0 to 1.2 and a viscosity of 1000 to 2000 cps at 25°C, resin having a specific gravity of 0.9 to 1.1 and a viscosity of 60 to 180 cps at 25°C, or a combination thereof.

7. The recycled board according to claim 1, characterized in that the molding is thermoforming and the molding temperature is 90°C or higher.

8. A recycled board manufactured by a method including the following steps, The process involves crushing recycled fabric to obtain a fiber coloring agent, wherein the fiber coloring agent consists of multiple fiber sheets, each with an average diameter of 10 mm or less, and includes the process of recycling and crushing the fabric. A dry stirring step in which the fiber colorant is dispersed among the plurality of fiber sheets, A step of adding an adhesive and mixing the adhesive with the dispersed fiber colorant so that the adhesive is sufficiently absorbed into the plurality of fiber sheets, wherein the total weight of the adhesive accounts for 20 to 50 wt% of the weight of the mixture, and the total weight of the dispersed fiber colorant accounts for 50 to 80 wt% of the weight of the mixture, a mixing and stirring step, A material input step involves placing the mixture of the adhesive and the plurality of fiber sheets into a mold. A rolling step in which the mixture of the adhesive and the plurality of fiber sheets is rolled so as to fill the mold with the mixture, Recycled board manufactured by cooling molding.

9. The recycled fabric further comprises a first recycled fabric and a second recycled fabric, wherein the first recycled fabric is different from the second recycled fabric, and the crushing step further includes a step of crushing the first recycled fabric and the second recycled fabric, respectively, to obtain a first fiber colorant and a second fiber colorant, wherein the first fiber colorant consists of a plurality of first fiber sheets, and the second fiber colorant consists of a plurality of second fiber sheets, characterized in that the recycled board according to claim 8.

10. The recycled board according to claim 9, characterized in that the color number of the first fiber colorant and the color number of the second fiber colorant are different.

11. The recycled board according to claim 9, further comprising the step of simultaneously dispersing the plurality of first fiber sheets of the first fiber colorant and the plurality of second fiber sheets of the second fiber colorant, and mixing and stirring the plurality of first fiber sheets and the plurality of second fiber sheets.

12. The recycled board according to claim 8, wherein the crushing step further includes a step of obtaining the recycled material using a crushing sieve, and the mesh size of the crushing sieve is 10 mm or less.

13. The recycled board according to claim 8, further comprising the step of dispersing the plurality of fiber sheets of the fiber colorant in the tank using a clawed bolt, the clawed bolt causing friction between the fiber colorant and the inner wall surface of the tank, thereby applying a shearing action to the fiber colorant.

14. The recycled board according to claim 13, further comprising the steps of mixing the adhesive and the dispersed fiber colorant in the tank using the clawed bolt, stirring the adhesive and the dispersed fiber colorant in at least two directions with the clawed bolt, and beating the mixture so that the adhesive is sufficiently permeated into the plurality of fiber sheets.

15. The recycled board according to claim 14, characterized in that the mixing and stirring step of the adhesive and the dispersed fiber colorant using the clawed bolt further includes a step of mixing and stirring clockwise for several minutes, and then mixing and stirring counterclockwise for several minutes.

16. The recycled board according to claim 8, characterized in that the adhesive comprises at least one resin that hardens under the action of temperature, pressure, a curing agent, light, or a combination thereof.

17. The recycled board according to claim 8, wherein the mold has a base plate and side walls surrounding the base plate, and the rolling process further includes a step of rolling the mixture in two directions parallel to the base plate using rolls.

18. The recycled board according to claim 17, wherein the rolling step further includes a step of filling the mold with the mixture so that its height matches that of the top edge of the side wall.

19. The roll further rolls back and forth from the center of the mold towards the opposing ends, rolls horizontally from the center of the mold to the left to the left end, then returns to the center, and then rolls horizontally to the right to the right end, then returns to the center again, or The recycled board according to claim 17, characterized in that it rolls horizontally from the center of the mold toward the front end, then returns to the center, and then rolls horizontally toward the rear end, then returns to the center again.

20. The recycled board according to claim 8, wherein the manufacturing method further includes a step of performing a hot pressing step and hot-forming the mixture by closing a mold at a predetermined temperature.

21. The recycled board according to claim 20, further characterized in that the hot pressing process is carried out at a temperature of 90 to 110°C and a pressure of 110 to 120 tons for several tens of minutes.

22. The recycled board according to claim 20, further comprising the steps of closing the mold, hot forming, cooling and shaping, and removing the mold after cooling and shaping to obtain a recycled board.

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