WO2020116042A1 - Procédé de production d'un corps moulé de biomasse - Google Patents

Procédé de production d'un corps moulé de biomasse Download PDF

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Publication number
WO2020116042A1
WO2020116042A1 PCT/JP2019/041220 JP2019041220W WO2020116042A1 WO 2020116042 A1 WO2020116042 A1 WO 2020116042A1 JP 2019041220 W JP2019041220 W JP 2019041220W WO 2020116042 A1 WO2020116042 A1 WO 2020116042A1
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Prior art keywords
product
molded body
biomass molded
acid
mixture
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PCT/JP2019/041220
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English (en)
Japanese (ja)
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内藤　茂樹
前田　直彦
彩乃 藤本
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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 WO2020116042A1 publication Critical patent/WO2020116042A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/78—Recycling of wood or furniture waste

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  • the present disclosure generally relates to a method for manufacturing a biomass molded body, and more particularly to a method for manufacturing a biomass molded body using a pulverized product of a plant or the like.
  • Patent Document 1 discloses a bagasse molded product obtained by molding bagasse, which is squeezed residue of sugar cane. This bagasse molded product is obtained by adhering a polyvalent carboxylic acid or the like to bagasse, and heating and pressurizing the bagasse to which this deposit adheres. At this time, an aqueous solution in which a polycarboxylic acid or the like is dissolved is attached to bagasse, and the mixture is heated and pressed.
  • Patent Document 1 discloses the following attachment method as a method for attaching a polyvalent carboxylic acid or the like to bagasse. That is, it is a method in which the aqueous solution is sprayed or the like toward the bagasse to be attached. Further, it is a method of attaching bagasse by immersing it in an aqueous solution. In addition, it is a method of applying by a roll or a brush and attaching it. Further, it is a method in which a powder of polyvalent carboxylic acid is directly scattered and attached to bagasse.
  • An object of the present disclosure is to provide a method for producing a biomass molded body that can obtain a biomass molded body having excellent water resistance and strength.
  • a method for producing a biomass molded body a step of obtaining a mixture by mixing a pulverized product or a veneer of a saccharide-containing plant and a polyvalent carboxylic acid, and pressing the mixture, It includes a step of obtaining a pressed product and juice, and a step of heating and pressing the pressed product to form the product.
  • FIG. 1 is a flowchart of a method for manufacturing a biomass molded body according to an embodiment of the present disclosure.
  • FIG. 1 shows a flowchart of a method for manufacturing a biomass molded body according to the present embodiment.
  • the method for producing a biomass molded body includes a mixing step S1, a pressing step S2, and a hot pressing step S3.
  • the mixing step S1 is a step of obtaining a mixture by mixing a base material (crushed plant or veneer containing sugars) and a polyvalent carboxylic acid.
  • the pressing step S2 is a step of pressing the above mixture to obtain a pressed product and juice.
  • the hot pressing step S3 is a step of heating and pressurizing the pressed product to form it. After passing through the hot pressing step S3, a biomass molded body is obtained.
  • the mixing step S1 shifts to the pressing step S2. That is, first, the base material and the polycarboxylic acid are mixed to obtain a mixture, and then the mixture is squeezed.
  • the base material is first squeezed to obtain the base material squeezed product, and then the polyvalent carboxylic acid is added to the base material squeezed product (hereinafter referred to as “post-addition”). "In some cases).
  • the present embodiment is advantageous in the following points. That is, in the present embodiment, the polyvalent carboxylic acid is more likely to penetrate into the compressed product than in the case of post-addition.
  • the polyvalent carboxylic acid permeates when the pressure on the base material is released in the pressing step S2. That is, it is considered that, when the pressure applied to the base material is released, a driving force that allows the polyvalent carboxylic acid to penetrate into the base material is obtained.
  • the polycarboxylic acid is not affected by releasing the pressure because it is added after compression of the base material. Therefore, in the case of post-addition, the polyvalent carboxylic acid cannot obtain a driving force that penetrates into the compressed base material.
  • the polyvalent carboxylic acid permeates into the inside of the pressed product, so that in the subsequent hot pressing step S3, not only the surface layer of the pressed product but also the sugar The curing reaction with the polycarboxylic acid can proceed.
  • the biomass compact may also have good dimensional stability.
  • the base material includes a pulverized product of a saccharide-containing plant and a veneer of a saccharide-containing plant.
  • the base material is a pulverized product of a plant containing a saccharide.
  • a case where the base material is a veneer of a plant containing sugar will be described in the second embodiment.
  • FIG. 1 shows a flowchart of the method for manufacturing a biomass molded body according to this embodiment.
  • the method for producing a biomass molded body includes a mixing step S1, a pressing step S2, and a hot pressing step S3.
  • the mixing step S1, the pressing step S2, and the hot pressing step S3 are essential steps.
  • the method for producing a biomass molded body further includes one or more steps selected from the group consisting of an intermediate product adding step S4, an ammonium salt adding step S5, and a drying step S6.
  • the intermediate product adding step S4, the ammonium salt adding step S5, and the drying step S6 are optional steps.
  • the mixing step S1 is a step of mixing a base material (a pulverized product of a plant containing sugars) and a polycarboxylic acid to obtain a mixture.
  • Plants are roughly divided into trees (so-called trees) and plants (so-called grass), but they may be trees or plants.
  • the plant is preferably palm (coconut), and among palms, oil palm and coconut are preferable. This is because palm contains a relatively large amount of sugar as compared with other plants.
  • a crushed product of a plant for example, crushed coconut and bagasse
  • the water content of the crushed plant product is not particularly limited, but is, for example, in the range of 50% to 500%.
  • the “water content” is calculated from the following calculation formula.
  • the saccharides contained in the ground product of the plant are monosaccharides, disaccharides and polysaccharides (including oligosaccharides). Disaccharides and polysaccharides are composed of a plurality of monosaccharides linked by glycosidic bonds.
  • monosaccharides include fructose, ribose, arabinose, rhamnose, xylulose and deoxyribose.
  • disaccharides examples include sucrose, maltose, trehalose, turanose, lactulose, maltulose, palatinose, gentiobiurose, melibiulose, galactosucrose, rutinulose and planteobiose.
  • polysaccharides examples include starch, agarose, alginic acid, glucomannan, inulin, chitin, chitosan, hyaluronic acid, glycogen and cellulose.
  • oligosaccharides include fructooligosaccharides, galactooligosaccharides, mannan oligosaccharides and stachyose.
  • Saccharides may be contained in the pulverized plant product in only one kind or in two or more kinds.
  • the polyvalent carboxylic acid is not particularly limited as long as it is a compound having a plurality of carboxy groups.
  • the polycarboxylic acid When mixed with the base material, the polycarboxylic acid may be in a powder state or an aqueous solution state.
  • the concentration of the polyvalent carboxylic acid aqueous solution is not particularly limited, but is in the range of 20% by mass or more and 50% by mass or less, for example.
  • polycarboxylic acid for example, citric acid, tartaric acid, malic acid, gluconic acid, sebacic acid, itaconic acid, succinic acid, oxalic acid, adipic acid, malonic acid, phthalic acid, maleic acid, fumaric acid, glutaric acid (1 , 5-pentanedioic acid), glutaconic acid and pentenedioic acid.
  • An acid anhydride can also be used as the polycarboxylic acid.
  • citric acid, tartaric acid, malic acid, gluconic acid, sebacic acid, and itaconic acid are particularly preferable because they are produced from plants.
  • the polycarboxylic acid has the same meaning as the polycarboxylic acid.
  • the content of the polycarboxylic acid is preferably 0.3% by mass or more and 155% by mass or less, more preferably 22.7% by mass or more and 105% by mass or less, based on the total mass of the dried product (described later).
  • the dried product has the same meaning as the dried product obtained after the drying step S6 (described later).
  • the content of the polycarboxylic acid is based on the dried product obtained after the drying step S6, but the amount of the polycarboxylic acid to be supplied to the base material in the mixing step S1 is, for example, as follows. It is possible to ask. As a test, first, in a mixing step S1, a known amount of a polyvalent carboxylic acid was supplied to a known amount of a base material, and the mixture was mixed to obtain a mixture, after which a dried product was subjected to a pressing step S2 and a drying step S6. (See FIG. 1). Then, the content of the polycarboxylic acid in the dried product is measured.
  • the mixing step S1 it is possible to establish a guide as to what amount of polyvalent carboxylic acid should be supplied to achieve the above preferable content.
  • the drying step S6 is not necessarily required thereafter unless the manufacturing conditions are changed extremely.
  • the pressing step S2 is a step of pressing the mixture to obtain a pressed product and juice.
  • the squeezed product is a squeezed residue (residue) of the base material.
  • the polycarboxylic acid is pushed into the base material.
  • An appropriate pressing machine such as a pressure press or a pressure roll is used for pressing the mixture.
  • the water content of the compressed product is not particularly limited, but is, for example, in the range of 20% or more and 200% or less.
  • the polyvalent carboxylic acid is more likely to penetrate into the compressed product than in the case of post-addition.
  • the mechanism will be described in more detail as follows.
  • the mixing step S1 when the base material before pressing and the polyvalent carboxylic acid are mixed, the polyvalent carboxylic acid easily dissolves in the surface portion of the water contained in the base material, but the center of the base material It is difficult for the polycarboxylic acid to dissolve in the water content.
  • the base material when the base material is pressed in the squeezing step S2, the base material is compressed, and the water content inside the cells in the central portion of the base material moves out of the cells and moves to the surface portion, The polycarboxylic acid existing in the part is mixed with water having a high concentration.
  • the base material that has been compressed expands.
  • the base material expands while sucking the water content of the surface portion in which the polyvalent carboxylic acid is melted into the central portion of the base material, the polyvalent carboxylic acid easily permeates into the base material. This is the same whether the polycarboxylic acid supplied to the base material is in a powder state or an aqueous solution state.
  • the hot pressing step S3 is a step of heating and pressing the pressed product to form it.
  • the squeezed material is made into a mat shape and hot-pressed with a hot platen.
  • a press machine having upper and lower hot plates (hot plates) is used.
  • the pressed product may be in the form of powder.
  • the powder-like pressed product may be put in an appropriate mold to carry out thermocompression molding.
  • the shape of the biomass molded body to be obtained may be a simple shape such as a plate shape or a complicated shape other than the plate shape.
  • the molding temperature is not particularly limited, but is in the range of 140°C or higher and 230°C or lower, for example.
  • the molding pressure is also not particularly limited, but is in the range of, for example, 0.5 MPa or more and 4 MPa or less.
  • the molding time is not particularly limited, but is, for example, 10 seconds or more and 5 minutes or less, preferably 10 seconds or more and 1 minute or less.
  • the curing reaction of the pressed product will be explained.
  • the first stage reaction (hereinafter sometimes referred to as “preliminary reaction”) progresses and is completed by the heat treatment, and the second stage reaction proceeds and is completed by the further heat treatment.
  • the squeezed product becomes a cured product upon completion of the second stage reaction.
  • the temperature of the squeezed product rises, but between the first-stage reaction and the second-stage reaction, the temperature of the squeezed product does not rise and It is maintained for a certain period of time.
  • the press becomes thermoset.
  • the pressed product becomes a semi-cured product through the first-step reaction, and this semi-cured product becomes a hardened product (biomass molded product) by the completion of the second-step reaction.
  • the semi-cured product is a substance in the intermediate stage (B stage) of the curing reaction.
  • the cured product is a substance in the final stage of the curing reaction. In other words, the cured product is a substance in a completely cured state.
  • the saccharides contained in the ground product of the plant are hydrolyzed and a hydrolysis product is produced. Further, the hydrolysis product is dehydrated and condensed to produce a reaction product of a sugar-modified product. Condensed water generated at this time is removed by an appropriate method.
  • sucrose sucrose
  • fructose dehydration reaction produces furfural (specifically, 5-(hydroxymethyl)furfural).
  • Furfural which is a sugar-modified product, becomes a furan resin, which is a thermosetting resin, by further heat treatment, and is cured in the presence of a polycarboxylic acid.
  • glucose becomes a sugar ester polymer by a dehydration condensation reaction and hardens.
  • the step of applying pressure is not particularly limited.
  • the pressurization may be performed from the start of the first stage to the end of the second stage, or may be performed from the start of the second stage to the end of the second stage without performing the first stage.
  • the polyvalent carboxylic acid penetrates into the compressed product, the curing reaction between the saccharide and the polycarboxylic acid can proceed not only on the surface layer of the compressed product but also inside. Therefore, a biomass molded body having excellent water resistance and strength can be obtained. Furthermore, the biomass compact may also have good dimensional stability.
  • a biomass molded article is not particularly limited, but can be widely used as a particle board or the like, for example, furniture, cabinets, architectural grounds (floor, wall, open field), and fabrication members.
  • the ammonium salt addition step S5 is a step of adding an ammonium salt to the mixture.
  • the ammonium salt addition step S5 may be the same step as the mixing step S1 or a step after the mixing step S1. This means that the order of mixing the base material, polyvalent carboxylic acid, and ammonium salt does not matter. However, the ammonium salt adding step S5 is a step prior to the pressing step S2.
  • the ammonium salt of this embodiment is at least one of ammonium sulfate and ammonium chloride. It is preferable to add an ammonium salt to the mixture.
  • the mixture contains the base material, the polyvalent carboxylic acid, and the ammonium salt.
  • the ammonium salt functions as a catalyst for the curing reaction of sugars. That is, when the ammonium salt penetrates into the compressed product, the curing reaction between the saccharide and the polycarboxylic acid can proceed not only on the surface layer of the compressed product but also inside. Therefore, more excellent water resistance can be imparted to the biomass molded body. Since the ammonium salt is a salt having a relatively weak acidity, the strength of the biomass molded body is maintained even if it remains in the biomass molded body.
  • Addition of ammonium salt is also advantageous for shortening the time of the esterification reaction. That is, usually, the esterification reaction between the hydroxy group in the ground product of the plant and the polycarboxylic acid proceeds relatively slowly over time. Therefore, by adding an ammonium salt as a catalyst to the mixture, the time for the above esterification reaction can be shortened.
  • the content of the ammonium salt is preferably in the range of 0.3% by mass or more and 5% by mass or less based on the total mass of the dried product (described later).
  • the dried product has the same meaning as the dried product obtained after the drying step S6 (described later). This makes it possible to further improve the water resistance of the biomass molded body. Moreover, the time for the esterification reaction can be further shortened.
  • the amount of ammonium salt to be added to the mixture in the mixing step S1 can be determined according to the case of the above-mentioned polyvalent carboxylic acid.
  • the drying step S6 is a step of drying the pressed product. Specifically, the dried product can be obtained by drying the pressed product in the range of 80° C. or higher and 150° C. or lower. By drying the squeezed product in this manner, water in the squeezed product can be evaporated and removed. By removing the water, the time required for the subsequent hot pressing step S3 can be shortened. Therefore, the productivity of the biomass molded body can be improved.
  • the drying step S6 is mainly intended to remove water in the pressed product and is not intended to complete the preliminary reaction, but preferably the preliminary reaction is completed after drying. At this time, only heating is required, and pressurization is not particularly necessary. By thus preliminarily reacting the dried product, the time required for the subsequent hot pressing step S3 can be further shortened. Therefore, the productivity of the biomass molded body can be further improved.
  • the intermediate product addition step S4 is a step of adding the intermediate product obtained by heating the juice to the pressed product.
  • the intermediate product is a substance in the intermediate stage of the curing reaction.
  • the intermediate product is, so to speak, similar to the saccharide-derived reaction product contained in the pressed product after the preliminary reaction.
  • the intermediate product can be synthesized by subjecting the juice obtained in the pressing step S2 to a heat treatment and a preliminary reaction.
  • an intermediate product may be synthesized by adding a polyvalent carboxylic acid and then preliminarily reacting it if necessary.
  • the intermediate product may become a solid by evaporation of water etc.
  • the solid matter may be added to the pressed product as it is, but preferably, the solid matter is crushed into a powder or the powder is dissolved in a solvent such as water to form an aqueous solution. This facilitates the uniform addition of the intermediate product to the pressed product.
  • the amount of the intermediate product added is preferably in the range of 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the pressed product.
  • the intermediate product may be added to the pressed product before the drying step S6 as described above, or may be added to the dried product after the drying step S6.
  • the dried product at this time may or may not have completed the preliminary reaction.
  • a saccharide obtained by drying the juice may be added instead of the intermediate product or in addition to the intermediate product.
  • Embodiment 2 In this embodiment, a case where the base material is a veneer of a plant containing sugar will be described. Other than using a saccharide-containing plant veneer instead of a saccharide-containing plant crushed product, the second embodiment is common to the first embodiment, and therefore the description of common items is omitted.
  • a veneer of a plant can be obtained by cutting a raw wood of a plant with a cutting machine.
  • cutting machines include rotary races and slicers.
  • the thickness of the veneer is not particularly limited, but is within a range of 2 mm or more and 8 mm or less, for example.
  • the mixture can be obtained as follows. That is, a polyvalent carboxylic acid aqueous solution can be sprayed onto a veneer of a plant to obtain a mixture. Moreover, a mixture can be obtained by immersing a veneer of a plant in an aqueous solution of a polycarboxylic acid. Alternatively, the aqueous solution of polycarboxylic acid may be applied to a veneer of a plant with a roll or a brush to obtain a mixture. Further, the powder of polycarboxylic acid can be directly sprayed on a veneer of a plant to obtain a mixture. The case of adding an ammonium salt is similar to that of the polycarboxylic acid.
  • the squeezed product may be in the form of a single plate.
  • thermocompression molding may be performed by stacking a plurality of single-plate-shaped pressed products. In this way, a plywood-shaped biomass molded body is obtained.
  • the fiber directions of the plurality of single-plate-shaped pressed products may be different or the same.
  • a biomass molded body having excellent water resistance and strength can be obtained.
  • the biomass compact may also have good dimensional stability.
  • Such a biomass molded body is not particularly limited, but can be widely used for furniture, cabinets, architectural grounds (floor, wall, open field), and fabrication members, for example.
  • one or more kinds of powder-like pressed products and one or more kinds of single-plate-like pressed products may be used together.
  • the powder compact may be thermocompressed and integrated on the surface of the single-plate compact to produce a biomass molded body.
  • the method for producing a biomass molded body according to the first aspect includes a step of mixing a pulverized product or veneer of a plant containing saccharides and a polyvalent carboxylic acid to obtain a mixture, squeezing the mixture, and squeezing the mixture. And a squeezed juice, and a step of heating and pressing the squeezed article to form the squeezed article.
  • the method for producing a biomass molded body according to the second aspect further comprises, in the first aspect, a step of adding an intermediate product obtained by heating the squeezed juice to the squeezed article.
  • the water resistance and strength of the biomass molded body can be further improved.
  • the method for producing a biomass molded body according to the third aspect further includes, in the first or second aspect, a step of adding at least one of ammonium sulfate and ammonium chloride to the mixture.
  • the water resistance of the biomass molded body can be further improved.
  • the method for producing a biomass molded body according to the fourth aspect further includes the step of drying the pressed product in any one of the first to third aspects.
  • the plant is palm.
  • Example 1 As a base material (plant containing sugar), a crushed palm (oil palm) was used. The crushed palm product was obtained by crushing a palm trunk. The water content of this pulverized palm was about 400%.
  • the polycarboxylic acid an aqueous citric acid solution (concentration 30% by mass) was used. And the mixture was obtained by mixing the pulverized coconut and the citric acid aqueous solution in the blending amounts shown in Table 1.
  • the pressed product was dried at 105° C. to obtain a dried product in an absolutely dry state.
  • the above dried product is hot-press molded under the molding conditions (temperature, time, and pressure) shown in Table 1 to obtain a plate-shaped biomass molded body (molded).
  • Product was manufactured.
  • the distance between the upper and lower hot plates was regulated by a distance bar so that the thickness of the biomass molded body to be obtained would be the thickness shown in Table 1.
  • the supply amount of the compressed product supplied between the upper and lower hot plates was adjusted so that the density shown in Table 1 was obtained.
  • Example 2 A plate-shaped biomass molded body was manufactured in the same manner as in Example 1 except that powdered citric acid was used instead of the citric acid aqueous solution.
  • Example 3 A plate-shaped biomass molded body was produced in the same manner as in Example 2 except that the dried product in the absolutely dried state was heat-treated at 230° C. for preliminary reaction.
  • Example 4 A plate-shaped biomass molded body was produced in the same manner as in Example 1 except that ammonium sulfate was added to the mixture as an ammonium salt.
  • Example 5 A palm veneer was used as a base material.
  • the palm veneer was obtained by cutting a raw palm tree with a cutting machine.
  • the palm veneer had a thickness of 3 mm and a water content of about 400%.
  • the palm veneer was impregnated with an aqueous citric acid solution (concentration: 30% by mass) as a polycarboxylic acid at a compounding amount shown in Table 1 to obtain a mixture.
  • the above mixture was squeezed to a water content of about 100% to obtain a single-plate squeezed product.
  • the pressed product was dried at 105° C. to obtain an absolutely dry product.
  • the above-mentioned single-plate-shaped pressed product was laminated in two with the fiber directions aligned, regulated with a distance bar so that the distance between the upper and lower hot plates was 3 mm, and the heat was applied under the molding conditions shown in Table 1.
  • a plywood-like biomass molded body was manufactured by pressure molding.
  • Example 6 the intermediate product was synthesized by subjecting the juice to a heat treatment at 105° C. for a preliminary reaction.
  • a plate-shaped biomass molded body was produced in the same manner as in Example 2 except that this intermediate product was added to the dried product obtained by drying the pressed product.
  • Example 1 As the base material, the same pulverized palm product as in Example 1 was used. And the palm squeezed product was obtained by squeezing this crushed palm product. The water content of this pressed palm product was 100%.
  • the pressed palm product was dried at 105°C to obtain a dried palm product.
  • an aqueous citric acid solution (concentration: 30% by mass) was sprayed onto the dried coconut product as a polyvalent carboxylic acid by spraying to obtain an adherent substance.
  • a plate-shaped biomass molded body was manufactured by hot-press molding the above-mentioned deposit under the molding conditions shown in Table 1 using a press machine having upper and lower hot plates.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

L'invention concerne un procédé de production d'un corps moulé de biomasse, ledit procédé comprenant : une étape consistant à mélanger un produit broyé ou une pulpe d'une plante contenant des saccharides avec un acide carboxylique polyvalent afin de produire un mélange ; une étape consistant à presser le mélange pour obtenir un pain pressé et un jus de pressage ; et une étape consistant à mouler le pain pressé sous chauffage et mise sous pression.
PCT/JP2019/041220 2018-12-03 2019-10-18 Procédé de production d'un corps moulé de biomasse WO2020116042A1 (fr)

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JP2018226793A JP2020089988A (ja) 2018-12-03 2018-12-03 バイオマス成形体の製造方法

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KR20230058165A (ko) * 2020-10-14 2023-05-02 파나소닉 아이피 매니지먼트 가부시키가이샤 섬유 보드의 제조 방법 및 섬유 보드 제조용 바이오매스 압축물
CN117916068A (zh) * 2021-11-29 2024-04-19 松下知识产权经营株式会社 纤维板制造方法

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