WO2023188911A1 - Procédé de production de panneau de particules et matériau comprimé permettant de produire un panneau de particules - Google Patents

Procédé de production de panneau de particules et matériau comprimé permettant de produire un panneau de particules Download PDF

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Publication number
WO2023188911A1
WO2023188911A1 PCT/JP2023/005043 JP2023005043W WO2023188911A1 WO 2023188911 A1 WO2023188911 A1 WO 2023188911A1 JP 2023005043 W JP2023005043 W JP 2023005043W WO 2023188911 A1 WO2023188911 A1 WO 2023188911A1
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Prior art keywords
particle board
compressed
product
less
chips
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PCT/JP2023/005043
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English (en)
Japanese (ja)
Inventor
直彦 前田
鉄平 朝田
喬文 井上
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パナソニックＩｐマネジメント株式会社
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Publication of WO2023188911A1 publication Critical patent/WO2023188911A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/06—Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation

Definitions

  • the present disclosure relates to a method for manufacturing particle board and a compressed material for manufacturing particle board.
  • Patent Document 1 discloses a method for manufacturing a wooden board (particle board, etc.). This wood board manufacturing method includes a forming process, a high frequency preheating process, and a hot pressing process.
  • wood materials such as chips mixed with adhesive or defibrated fibers are laid down to a certain thickness.
  • the wood material laid out to a certain thickness is heated by high-frequency dielectric heating.
  • the hot pressing process the wood material that has been preheated by high-frequency dielectric heating is heated to a constant high temperature and is hot-press-formed to a predetermined thickness.
  • Patent Document 1 the method for manufacturing a wood board in Patent Document 1 has a problem in that it is difficult to obtain a high-strength wood board when palm plants are used as raw materials.
  • An object of the present disclosure is to provide a method for producing particle board that can produce a high-strength particle board when coconut family plants are used as a raw material, and a compressed material for producing particle board that has excellent storage properties. It is in.
  • a method for manufacturing particle board includes a compression step, a fragmentation step, a forming step, and a hot pressing step.
  • a crushed product of a palm plant is compressed to obtain a compressed product.
  • small pieces are obtained by cutting the compressed material.
  • a mat is obtained by adding an adhesive to the small pieces and forming them.
  • the hot pressing step the mat is pressed while being heated.
  • the pulverized material contains chips with a length of 5.0 mm or more and 100.0 mm or less and an outer diameter of 1.0 mm or more and 10.0 mm or less. The content of the chips is 70% by mass or more based on the total mass of the pulverized material.
  • a compressed product for particle board production is a compressed product of a crushed product of a palm plant.
  • the pulverized material contains chips with a length of 5.0 mm or more and 100.0 mm or less and an outer diameter of 1.0 mm or more and 10.0 mm or less.
  • the content of the chips is 70% by mass or more based on the total mass of the pulverized material.
  • palm trees have a moisture content of 70 to 300%, which is more than double that of ordinary South Sea wood, so raw lumber milled from logs rots in one to two weeks, making storage extremely difficult.
  • the apparent specific gravity of a normal palm plant in the raw state is about 0.60 to 0.80
  • the specific gravity after drying is about 0.35. Therefore, when transporting green wood from a logging site to a processing facility, etc., there is a problem that the obtained material portion is about 1/2 of the mass of the material actually transported.
  • the bulk density becomes too low during transportation, which increases the number of times the material is transported, leading to a problem in that the transport efficiency deteriorates.
  • Patent Document 1 As one of the solutions to environmental problems, the use of palm plants as building materials is being explored.
  • the method for manufacturing a wood board in Patent Document 1 has a problem in that it is difficult to obtain a high-strength wood board when palm plants are used as raw materials.
  • the present inventors believe that the cause of this is the low bulk density of palm trees.
  • the present inventors focused on particle board and conducted extensive research in order to eliminate the above causes.
  • the present inventors focused on particle board and conducted extensive research in order to eliminate the above causes.
  • the method for manufacturing particle board according to the present embodiment includes a compression process, a small piece process, a forming process, and a hot pressing process.
  • the crushed product of the coconut family plant is compressed to obtain a compressed product.
  • the pulverized product contains suitable chips (chips with a length of 5.0 mm or more and 100.0 mm or less, and an outer diameter of 1.0 mm or more and 10.0 mm or less).
  • the content of suitable chips is 70% by mass or more based on the total mass of the pulverized material.
  • the three steps after the compression step, including the fragmentation step, the forming step, and the hot pressing step, are the same as those included in the conventional particle board manufacturing method. Even after these steps, many suitable chips tend to remain on the particle board.
  • Particle Board The particle board according to this embodiment is a plate-shaped material formed using a palm plant as a raw material. Particleboard includes single-layer particleboard, three-layer particleboard, and multi-layer particleboard.
  • Single-layer particle board is a particle board consisting of a single layer containing small pieces (particles) of approximately the same size.
  • 3-layer particle board is a particle board consisting of three layers (one core layer and two surface layers). That is, in the three-layer particle board, the surface layer is arranged on both sides of the core layer in the thickness direction.
  • the small pieces contained in the core layer are coarse, and the small pieces contained in the surface layer are fine.
  • the small pieces included in the core layer need only be coarser than the small pieces included in the surface layer, and the size of each small piece is not particularly limited.
  • multilayer particle board is a particle board in which the size of the small pieces decreases almost continuously from the center in the thickness direction toward the surface.
  • three-layer particle board and multi-layer particle board are more likely to achieve both surface smoothness and strength than single-layer particle board. Furthermore, materials can be used without wasting them.
  • the method for manufacturing particle board according to this embodiment includes a compression step, a fragmentation step, a forming step, and a hot pressing step. Below, these steps will be explained in order.
  • ⁇ Compression process> In the compression step, a crushed product of a palm plant is compressed to obtain a compressed product for particle board production (hereinafter sometimes simply referred to as "compressed product").
  • compressed product a compressed product for particle board production
  • crushed products and compressed products of palm plants will be explained in order.
  • the type of palm family plant is not particularly limited, but includes, for example, oil palm, sorghum palm, coconut palm, date palm, sago palm, acai, palm, and the like.
  • Usable parts of palm plants include, but are not particularly limited to, stem parts, leaves, fruit parts, cluster parts, and seed parts.
  • a crushed product of a palm plant is obtained as a collection of chips by crushing a palm plant with a chipper.
  • Chips obtained by crushing palm plants generally have an elongated shape with a long length in the fiber direction.
  • the chip preferably has a length of 5.0 mm or more and 100.0 mm or less, and an outer diameter of 1.0 mm or more and 10.0 mm or less.
  • a chip that meets the above length and outer diameter will be referred to as a "suitable chip” hereinafter, and a chip that does not meet the above length and outer diameter may be referred to as an "unsuitable chip” hereinafter.
  • the length and outer diameter of the chips contained in the crushed material of the palm family plant can be determined by taking a photograph of a predetermined amount of the crushed material of the palm family plant or observing it with a magnifying glass. Obtained by measuring .
  • the length of the chip is 5.0 mm or more, a decrease in the strength of the particle board can be suppressed. This also applies when the outer diameter of the chip is 1.0 mm or more.
  • the chip length of 100.0 mm or less deterioration of the surface smoothness of the particle board can be suppressed. This also applies when the outer diameter of the chip is 10.0 mm or less.
  • the content of the suitable chips is 70% by mass or more, preferably 80% by mass or more, based on the total amount of the crushed palm material (total amount of suitable chips and non-preferred chips).
  • the content of suitable chips is 70% by mass or more, it is possible not only to suppress a decrease in the strength of the particle board, but also to easily manufacture a particle board with more stable quality.
  • the upper limit of the content of suitable chips is not particularly limited, but is, for example, 100% by mass or less.
  • the parenchyma of palm trees can be a factor in variations in the quality of particleboard. Therefore, it is preferable that the crushed product of the coconut family plant is obtained by crushing the palm family plant and then classifying it to reduce the amount of parenchyma.
  • the crushed product of palm trees before classification includes a crushed product mainly composed of parenchymal tissue and a crushed product mainly composed of vascular tissue, but by classification, relatively small parenchymal cells It is preferable to reduce the amount of pulverized material whose main component is tissue. In this manner, the amount of the crushed material containing parenchymal tissue as a main component is reduced in the crushed material after classification compared to the crushed material before classification.
  • parenchymal tissue contains a large amount of sugar and can cause mold growth, but by lowering the ratio of parenchymal tissue contained in compressed materials, mold growth can be suppressed and the storage properties of compressed materials can be improved.
  • the parenchyma cell tissue is a tissue composed of parenchyma cells. Parenchymal tissue includes anabolic tissue, secretory tissue, storage tissue, etc., and has physiological functions such as synthesis, decomposition, and storage.
  • Methods for reducing unsuitable chips are not particularly limited, but include, for example, reducing the size of the mesh.
  • An example of this is to use two different sieves. That is, if the pulverized material passes through a sieve with a large opening but does not pass through a sieve with a small opening, the amount of unsuitable chips is likely to be reduced.
  • examples of sieves with large openings include sieves of 2.16 mesh (opening 9.5 mm) to 3.5 mesh (opening 5.6 mm).
  • examples of sieves with small openings include sieves of 6.5 mesh (opening 2.8 mm) to 18 mesh (opening 850 ⁇ m).
  • unsuitable chips may be reduced by using two sieves with different openings. good.
  • the crushed product of the palm plant is dried.
  • the water content of the crushed product of the palm plant is preferably 25% by mass or less, more preferably 20% by mass or less.
  • the moisture content of the crushed product of the palm family plant is 25% by mass or less, the shape retention of the compressed product is improved. Further, it is possible to prevent the progress of decay of the wood fibers contained in the compressed material, and the storage properties of the compressed material are improved.
  • the moisture content of the crushed product of the palm family plant can be determined by the total drying method.
  • palm plants can be used as plants for particle board production, so resources can be used effectively.
  • the compressed product for particle board production according to the present embodiment is a compressed product obtained by compressing a crushed product of a palm plant.
  • the shape of the compressed product is not particularly limited, and examples include pellets, briquettes, and blocks.
  • the size of the pellet-like compressed product is not particularly limited, but the outer diameter is 10 mm or more and 25 mm or less, and the length is 30 mm or more and 100 mm or less.
  • a pellet-like compressed product can be obtained using, for example, a known pelletizer.
  • Known pelletizers include, but are not particularly limited to, flat die molding machines, ring die molding machines, and the like. Such a pelletizer has the advantage of excellent productivity of compressed products.
  • the size of the briquette-shaped compressed product is not particularly limited, but the outer diameter is 30 mm or more and 150 mm or less, and the length is 50 mm or more and 200 mm or less.
  • a briquette-like compressed product can be obtained using, for example, a known briquette.
  • Known briquettes include, but are not particularly limited to, a push-forming machine and the like.
  • a push-type molding machine has a cylindrical mold that extends in the front-rear direction, has an input port at the rear, and has an output port at the front.
  • a piston that reciprocates. When using this push-type molding machine, the pulverized material is introduced into the mold through the input port, and the pulverized material is compressed by moving the piston forward.
  • a briquette has the advantage that the wood fibers in the pulverized material are less likely to break when the pulverized material is charged or compressed, and the strength of the resulting particle board can be further increased.
  • the size of the block-shaped compressed material is not particularly limited, but is 30 mm or more and 300 mm or less in length, 30 mm or more and 300 mm or less in width, and 30 mm or more and 300 mm or less in height.
  • a block-shaped compressed product can be obtained using, for example, a known volume reduction machine.
  • Known volume reducing machines are not particularly limited, but include, for example, a single-shaft volume reducing machine that can compress the pulverized material introduced into the compression chamber from one direction, and a volume reduction machine that can compress the pulverized material introduced into the compression chamber from three directions. Examples include a compressible three-shaft volume reducer. Similar to a briquette, such a volume reducing machine has the advantage that the wood fibers in the crushed material are less likely to break when the crushed material is charged or compressed, and the strength of the resulting particle board can be further increased.
  • the specific gravity of the compressed product is preferably 0.30 or more and 1.60 or less, more preferably 0.35 or more and 1.50 or less, particularly preferably 0.40 or more and 1.50 or less. This improves the mechanical durability of the compressed product and makes it difficult for the compressed product to crumble or crack during transportation.
  • the specific gravity of the compressed product is greater than 1.60, the wood fibers constituting the crushed product of the palm family may be compressed and damaged, and the strength characteristics of the obtained particle board are likely to deteriorate. If the specific gravity of the compressed material is less than 0.30, it will become bulky, and if there is a limit to the volume of the compressed material that can be transported at one time, the number of times it will be transported will increase until the required mass of the compressed material is reached. Resulting in.
  • the moisture content of the compressed product is preferably 25% by mass or less, more preferably 20% by mass or less.
  • the moisture content of the compressed product is preferably 25% by mass or less, more preferably 20% by mass or less.
  • the compressive force is used to integrate the crushed material, but adhesive may be used as long as it does not interfere with cutting the compressed material during the fragmentation process.
  • the heated pulverized material may be compressed. In this case, there is an advantage that even if the pulverized product is compressed with a compression force lower than the compression force when not heated, a compressed product with a desired specific gravity can be obtained.
  • functional materials such as an antibacterial agent, an aromatic agent, and a coloring agent may be mixed and integrated with the pulverized material. In this case, these functions can be imparted to the resulting particle board, which is preferable.
  • the fragmentation process is a process of fragmenting the compressed material into small pieces. That is, in the fragmentation process, small pieces (particles) are obtained by cutting the compressed material. Specifically, small pieces can be obtained from the compressed material using a known flaker.
  • the flaker is not particularly limited, but includes, for example, a ring flaker, a drum flaker, a disk flaker, and the like.
  • the pieces obtained are dried.
  • the pieces can be dried using a known dryer.
  • the drying temperature is not particularly limited, but is, for example, 100°C or higher and 230°C or lower.
  • the drying time is also not particularly limited.
  • the small pieces may be classified to obtain coarse pieces and fine pieces.
  • Classification includes screen-type sorting using a sieve and air classification (separating by air using the difference in specific gravity). By obtaining coarse pieces and fine pieces in this manner, three-layer particle board can be manufactured.
  • a mat is obtained by adding adhesive to the small pieces and forming them. Forming is preferably carried out by a dry method. In dry forming, a known gravity former or suction former can be used. Note that a water repellent may be added in addition to the adhesive.
  • the adhesive is not particularly limited, but examples thereof include diphenylmethane diisocyanate (MDI), urea resin, urea-melamine cocondensation resin, and phenol resin.
  • MDI diphenylmethane diisocyanate
  • urea resin urea-melamine cocondensation resin
  • phenol resin phenol resin
  • the blending amount of the adhesive is not particularly limited, but is, for example, 1% by mass or more and 10% by mass or less with respect to the total mass of the small piece and the adhesive.
  • a three-layer mat is a mat consisting of three layers (one core layer and two surface layers). That is, in the three-layer mat, the surface layer is arranged on both sides of the core layer in the thickness direction.
  • the core layer contains coarse particles and adhesive
  • the surface layer contains fine particles and adhesive.
  • ⁇ Heat pressure process In the hot pressing process, the mat is pressed while being heated.
  • a known hot press In the hot press step, a known hot press can be used.
  • a distance bar may be installed between the hot plates of the hot press. The distance bar allows the thickness of the particleboard to be constant.
  • the heating temperature is not particularly limited, but is, for example, 140°C or higher and 230°C or lower.
  • the pressure at the time of clamping is not particularly limited, but is, for example, 0.5 MPa or more and 10 MPa or less.
  • the heat-pressing time is not particularly limited, but is, for example, 10 seconds or more and 3 minutes or less.
  • the thickness of the particle board is not particularly limited, but is, for example, 1 mm or more and 20 mm or less.
  • the particle board manufacturing method may further include a cold pressing step.
  • the cold pressing process is a process in which the mat is pressed without heating after the forming process and before the hot pressing process.
  • the cold pressing process is particularly effective in producing three-layer particleboard and multi-layer particleboard. Thereby, temporary adhesion between layers can be performed.
  • the method for manufacturing particle board may further include a humidity conditioning step.
  • the humidity conditioning process the particle board after the heat-pressing process is left in the atmosphere for a certain period of time, or processed in a humidity conditioning device. Since the moisture content of the particle board immediately after the heat-pressing process is very low, it is preferable to increase the humidity until the moisture content approaches the moisture content that is in equilibrium with the usage conditions.
  • the equipment for these chipping processes, forming processes, hot pressing processes, etc. may be the same as the equipment used for manufacturing conventional particle boards.
  • the particle board according to this embodiment can be produced using conventional particle board manufacturing equipment. Therefore, the efficiency of equipment usage can be increased. Therefore, particle board can be obtained with excellent productivity even when the raw material is a waste palm plant that has poor storage properties and a low bulk density after drying.
  • the method for manufacturing particle board according to this embodiment includes a compression process, a small piece process, a forming process, and a hot pressing process.
  • the crushed product of the coconut family plant is compressed to obtain a compressed product.
  • the pulverized product contains suitable chips (chips with a length of 5.0 mm or more and 100.0 mm or less, and an outer diameter of 1.0 mm or more and 10.0 mm or less).
  • the content of suitable chips is 70% by mass or more based on the total mass of the pulverized material.
  • the length of a suitable chip may be somewhat shortened through the dicing process, forming process, and hot pressing process. However, since many suitable chips remain in the compressed material used for particle board production, even after these steps, suitable chips will still be included in the particle board.
  • the first aspect is a method for manufacturing particle board, which includes a compression step, a small-piece step, a forming step, and a hot-pressing step.
  • a compression step a crushed product of a palm plant is compressed to obtain a compressed product.
  • small pieces are obtained by cutting the compressed material.
  • a mat is obtained by adding an adhesive to the small pieces and forming them.
  • the hot pressing step the mat is pressed while being heated.
  • the pulverized material contains chips with a length of 5.0 mm or more and 100.0 mm or less and an outer diameter of 1.0 mm or more and 10.0 mm or less. The content of the chips is 70% by mass or more based on the total mass of the pulverized material.
  • a high-strength particle board can be manufactured when coconut plants are used as raw materials.
  • the second aspect is a method for manufacturing particle board based on the first aspect.
  • the compressed material has a specific gravity of 0.35 or more and 1.50 or less.
  • the moisture content of the compressed product is 25% by mass or less.
  • the mechanical durability of the compressed product is improved. Furthermore, the storage properties of the compressed product are improved.
  • the third aspect is a method for manufacturing particle board based on the first or second aspect.
  • the pulverized product is obtained by pulverizing the palmaceous plant and then classifying it to reduce the amount of parenchymal tissue.
  • parenchymal tissue is less likely to be included in the compressed material, and particle board can be stably manufactured.
  • the fourth aspect is a compressed product for producing particle board, which is a compressed product of a crushed product of a palm plant.
  • the pulverized material contains chips with a length of 5.0 mm or more and 100.0 mm or less and an outer diameter of 1.0 mm or more and 10.0 mm or less.
  • the content of the chips is 70% by mass or more based on the total mass of the pulverized material.
  • a high-strength particle board can be manufactured when coconut plants are used as raw materials.
  • the fifth aspect is a compressed material for particle board production based on the fourth aspect.
  • the compressed material has a specific gravity of 0.35 or more and 1.50 or less.
  • the moisture content of the compressed product is 25% by mass or less.
  • the mechanical durability of the compressed product is improved. Furthermore, the storage properties of the compressed product are improved.
  • Example 1 The trunk part of an oil palm (OPT) was used as a raw material for particle board (coconut family plant), and by putting it into a chipper, a pulverized product with a size of 10 mm or more and 50 mm or less was obtained. After foreign matter was removed from the pulverized material using a foreign material remover, the product was dried to a predetermined moisture content using a jet dryer to obtain a dry pulverized material.
  • OPT oil palm
  • a 7.5 mesh (opening 2.36 mm) sieve and a 16 mesh (opening 1.00 mm) sieve were used for the dried pulverized product. Then, from the dry pulverized product, which had previously been passed through a 200 mesh sieve (75 ⁇ m opening) to reduce the parenchymal tissue, a pulverized product that passed through a 7.5 mesh sieve but did not pass through a 16 mesh sieve was obtained. The crushed material obtained by classification in this manner has a reduced amount of parenchymal tissue.
  • the average chip length, average chip diameter, and preferred chip content of the pulverized product after classification are as shown in Table 1.
  • the average chip length and average chip diameter were obtained by measuring the length and outer diameter of the chips contained in each pulverized product using a magnifying glass for a predetermined amount of the pulverized product, and calculating the arithmetic mean.
  • the preferred chip content is determined by measuring the length and outer diameter of chips contained in a predetermined amount of crushed material using a magnifying glass, and determining the length of 5.0 mm or more and 100.0 mm or less and the outer diameter of 1.0 mm or more. It was obtained by classifying chips according to whether they are included in the range of 0 mm or more and 10.0 mm or less, and determining the mass ratio of chips that are included in this range (suitable chips) and chips that are not included in this range (unsuitable chips).
  • the above compressed product was put into a knife ring flaker and dried with a jet dryer at 200°C to obtain small pieces (particles).
  • MDI diphenylmethane diisocyanate
  • the resulting mat was pressed while heating at 180°C for 6 minutes, resulting in a thickness of 12 mm and a density of 750 kg/ m3. I got particle board. Note that the amount of adhesive compounded was 10% by mass.
  • Example 2 A pulverized product after classification was obtained in the same manner as in Example 1, except that the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 2 are the same as those of the particle board of Example 1.
  • Example 3 A pulverized product after classification was obtained in the same manner as in Example 1, except that the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 3 are the same as those of the particle board of Example 1.
  • Example 4 A pulverized product after classification was obtained in the same manner as in Example 1.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • a briquette-like compressed product was obtained from the above pulverized product using a briquette under the same conditions as in Example 1.
  • the specific gravity, moisture content, and size of this compressed product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 4 are the same as those of the particle board of Example 1.
  • Example 5 A pulverized product after classification was obtained in the same manner as in Example 1, except that the trunk of a coconut palm was used as the raw material for particle board (coconut family plant) and the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • Example 2 a compressed product was obtained in the same manner as in Example 1.
  • the specific gravity, moisture content, and size of this compressed product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 5 are the same as those of the particle board of Example 1.
  • Example 6 A pulverized product after classification was obtained in the same manner as in Example 1, except that the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 6 are the same as those of the particle board of Example 1.
  • Example 7 A pulverized product after classification was obtained in the same manner as in Example 1, except that the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 7 are the same as those of the particle board of Example 1.
  • Example 8 A pulverized product after classification was obtained in the same manner as in Example 1, except that the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 8 are the same as those of the particle board of Example 1.
  • Example 9 A pulverized product after classification was obtained in the same manner as in Example 1.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • a briquette-like compressed product was obtained from the above pulverized product using a briquette under the same conditions as in Example 1.
  • the specific gravity, moisture content, and size of this compressed product are as shown in Table 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Example 9 are the same as those of the particle board of Example 1.
  • particle board was manufactured in the same manner as in Example 1 using the above compressed material. Note that the thickness and density of the particle board of Comparative Example 1 are the same as those of the particle board of Example 1.
  • Comparative example 2 A pulverized product after classification was obtained in the same manner as in Example 1, except that cedar was used as the raw material for the particle board and the openings of the two sieves were changed.
  • the average chip length, average chip diameter, and preferred chip content of this pulverized product are as shown in Table 1.
  • Example 2 a particle board was manufactured in the same manner as in Example 1 using the dried pieces of the pulverized product as small pieces (particles) without obtaining a compressed product from the pulverized product. Note that the thickness and density of the particle board of Comparative Example 2 are the same as those of the particle board of Example 1.
  • Comparison of Examples 1 to 9 and Comparative Example 1 shows that when using coconut plants as raw materials, if the content of suitable chips in the pulverized product is 70% by mass or more, the strength of the particle board is improved. was confirmed.

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  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

La présente invention aborde le problème de la fourniture d'un procédé de production d'un panneau de particules, le procédé étant apte à produire un panneau de particules à haute résistance. Le procédé de production d'un panneau de particules selon la présente invention comprend une étape de compression, une étape de fragmentation, une étape de mise en forme et une étape de compression thermique. Pendant l'étape de compression, un produit pulvérisé de plante de la famille des Palmae est comprimé pour obtenir un matériau comprimé. Pendant l'étape de fragmentation, le matériau comprimé est découpé en petits morceaux. Pendant l'étape de mise en forme, un mat est obtenu par ajout d'un adhésif aux petits morceaux et par mise en forme. Pendant l'étape de compression thermique, le mat est comprimé tout en étant chauffé. Le produit pulvérisé contient des copeaux ayant une longueur de 5,0 mm à 100,0 mm et un diamètre externe de 1,0 mm à 10,0 mm. La teneur en copeaux est d'au moins 70 % en masse par rapport à la masse totale du produit pulvérisé.
PCT/JP2023/005043 2022-03-29 2023-02-14 Procédé de production de panneau de particules et matériau comprimé permettant de produire un panneau de particules WO2023188911A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003260705A (ja) * 2002-03-07 2003-09-16 Mitsubishi Paper Mills Ltd 蓄熱性繊維ボード及びその利用方法
JP2007331286A (ja) * 2006-06-16 2007-12-27 Tokyo Board Kogyo Kk 木質ボードの製造方法
JP2012214013A (ja) * 2011-03-30 2012-11-08 Panasonic Corp 木質系ボード及びその製造方法
WO2021112749A1 (fr) * 2019-12-03 2021-06-10 Ikea Supply Ag Recyclage de fibres lignocellulosiques à partir de panneaux de fibres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003260705A (ja) * 2002-03-07 2003-09-16 Mitsubishi Paper Mills Ltd 蓄熱性繊維ボード及びその利用方法
JP2007331286A (ja) * 2006-06-16 2007-12-27 Tokyo Board Kogyo Kk 木質ボードの製造方法
JP2012214013A (ja) * 2011-03-30 2012-11-08 Panasonic Corp 木質系ボード及びその製造方法
WO2021112749A1 (fr) * 2019-12-03 2021-06-10 Ikea Supply Ag Recyclage de fibres lignocellulosiques à partir de panneaux de fibres

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