Molding material, molded body, and method of manufacturing molding material

Abstract

The present invention provides a molding material, a molded body, and a method for manufacturing the molding material, which can be heated at a higher temperature than conventional materials during molding processing while using biomass materials. The molding material according to the present embodiment is a biomass material obtained from a water-soluble organic material, having a moisture content of 20% or less, a bacterial count of mesophilic aerobic bacteria of 105 / g or less, and a biomass material in which the maximum exothermic peak is detected at 300°C or higher in differential thermal analysis. Thus, the molding material can be heated at a higher temperature than conventional materials during molding processing because it uses a biomass material in which the detection temperature of the maximum exothermic peak in differential thermal analysis is higher than that of conventional biomass materials.

Description

Technology Field

[0001] The present invention relates to a molding material, a molded body, and a method for manufacturing a molding material. Background Technology

[0002] Conventionally, moisture-rich organic matter such as food waste has been treated by decomposition using aerobic bacteria. A general food waste treatment device employs a method in which a culture medium such as sawdust or rice husks is placed in a treatment tank equipped with blades and a ventilation device, and food waste crushed through a crusher is agitated therein.

[0003] In addition, it has been proposed to sterilize and decompose bacteria or odor-causing molecules emitted into the atmosphere using ozone, convert them into harmless molecules, and release them into the outside air (e.g., Patent Document 1). Furthermore, in recent years, it has been thought that biomass materials obtained from organic matter in this manner will not simply be discarded, but will be reused as materials for molded bodies such as trays or planters. Prior art literature

[0004] Japanese Patent Publication No. Hei 7-136629 Japanese Patent Publication No. 2010-136683 The problem to be solved

[0005] However, general biomass materials obtained from organic matter have low heat resistance and begin to carbonize at approximately 180°C to 260°C (see Patent Document 2

[0007] ). For this reason, regarding conventional molding materials containing biomass materials with low heat resistance, there was a problem that it was difficult to perform molding processes at high temperatures, such as injection molding or extrusion molding, which require heating at high temperatures exceeding 180°C to 260°C, because the physical properties of the biomass material deteriorated.

[0006] Therefore, the present invention is made in consideration of the above points and aims to provide a molding material, a molded body, and a method for manufacturing the molding material, which can be heated at a higher temperature than conventionally during molding processing while using biomass material. means of solving the problem

[0007] The molding material according to the present invention is a molding material used as a material for a molded body, comprising a biomass material obtained from a water-soluble organic material and at least one of a thermoplastic resin, a thermosetting resin, and a resin additive, wherein the biomass material has a moisture content of 20% or less and also has a bacterial count of mesophilic aerobic bacteria of 10 5 It is less than / g, and in differential thermal analysis, the maximum exothermic peak is detected at 300[℃] or higher.

[0008] The method for manufacturing a molding material according to the present invention is a method for manufacturing a molding material used as a material for a molded body, comprising: a receiving process for receiving a water-soluble organic material in a treatment tank; a treatment process for manufacturing a biomass material by heating the water-soluble organic material while stirring it in the treatment tank, exhausting gas from the treatment tank at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, and supplying an ion gas having an ion density of 2 million [pcs / cc] or more into the treatment tank at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, thereby separating water molecules of the water-soluble organic material and evaporating the moisture contained in the water-soluble organic material; and a manufacturing process for manufacturing a molding material by mixing the biomass material with at least one of a thermoplastic resin, a thermosetting resin, and a resin additive. Effects of the invention

[0009] According to the present invention, in the differential thermal analysis method, since a biomass material is used in which the detection temperature of the maximum exothermic peak is higher than that of conventional biomass materials, heating can be performed at a higher temperature than conventional materials during molding processing. Brief explanation of the drawing

[0010] FIG. 1 is a cross-sectional view showing the cross-sectional configuration of a processing device used for manufacturing biomass materials according to the present embodiment when viewed from the side. Figure 2 is a cross-sectional view showing the cross-sectional configuration of the processing apparatus shown in Figure 1 when viewed from the end side. Figure 3 is a graph showing the measurement results of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis of biomass material obtained from apple pomace. Figure 4 is a graph showing the measurement results of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis of biomass material obtained from carrot meal. Figure 5 is a graph showing the measurement results of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis of biomass material obtained from coffee grounds. Specific details for implementing the invention

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] (1) <Biomass material according to the present embodiment>

[0013] The biomass material according to the present embodiment is manufactured by heating the water-soluble organic matter while stirring it in a treatment tank, exhausting the gas in the treatment tank at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, and supplying an ion gas having an ion density of 2 million [pcs / cc] or more into the treatment tank.

[0014] Examples of hydrous organic materials that serve as raw materials for biomass include vegetable waste, fruit waste, pruning grass, organic residues after beverage extraction, meat waste, fish waste such as salmon, sewage, and discarded food. Organic residues after beverage extraction include apple pomace, tangerine pomace, grape pomace, grapefruit pomace, peach pomace, carrot pomace, bell pepper pomace, wine lees, green tea lees, barley tea lees, and coffee grounds.

[0015] In addition, when manufacturing biomass materials using these hydrous organic materials, since the processing time may vary slightly depending on the type of hydrous organic material, it is preferable to manufacture biomass materials by processing each type of hydrous organic material separately rather than mixing multiple types.

[0016] The biomass material according to the present embodiment can be incorporated into the molding material that serves as the material for the molded body when manufacturing various molded bodies, such as various trays including service trays, desk trays, pen trays, and coaster trays, containers such as containers or planters, parts of electronic devices, parts of automobiles, blocks, and building materials.

[0017] The biomass material produced by performing the above-described treatment on the aqueous organic matter has a moisture content of 20% or less, and also has a bacterial count of mesophilic aerobic bacteria of 10 5 In addition to this composition, the biomass material according to the present embodiment has high heat resistance and is difficult to carbonize even when heated to high temperatures, as the maximum exothermic peak is detected at 300°C or higher when heated in the atmosphere and increased from room temperature in differential thermal analysis.

[0018] The moisture content of the biomass material according to the present embodiment can be measured by the dry loss method. The dry loss method involves first measuring the weight of the organic matter containing moisture before treatment, and then heating the organic matter to evaporate the moisture, and measuring the weight of the organic matter with zero moisture content; the moisture content is then measured by assuming the weight lost as the moisture.

[0019] The number of mesophilic aerobic bacteria can be measured, for example, by the standard agar plate culture method. In this embodiment, the number of mesophilic aerobic bacteria is determined according to the standard agar plate culture method (https: / / www.jfrl.or.jp / storage / file / 072.pdf) performed by the General Incorporated Foundation Japan Food Analysis Center.

[0020] In differential thermal analysis, the temperature at which the maximum exothermic peak appears can be measured by a thermal analysis device (e.g., a differential thermal thermogravimetric simultaneous measurement device manufactured by SII Nanotechnology Co., Ltd. (product name “TG / DTA7220”)). Specifically, a sample (biomass material) and a reference material (alumina in this case) are heated in the atmosphere and the temperature is raised from room temperature, and the temperature difference between the sample and the reference material is measured. By analyzing the curve representing the temperature difference with the obtained reference material (hereinafter also referred to as a Differential Thermal Analysis (DTA) curve), the temperature at which the maximum exothermic peak appears can be determined.

[0021] In the biomass material according to the present embodiment, in differential thermal analysis, it is desirable that the maximum exothermic peak is detected at 300°C or higher, preferably 350°C or higher and 700°C or lower, and more preferably 450°C or higher and 600°C or lower when heated in the atmosphere and increased from room temperature.

[0022] In this embodiment, for biomass materials obtained by treating, for example, apple pomace, carrot pomace, and coffee grounds, the temperature at which the maximum exothermic peak appears in differential thermal analysis was confirmed, and it was confirmed that the maximum exothermic peak was detected at 400°C or higher. This verification test will be described later.

[0023] In addition, it has been confirmed that in a biomass material produced by a conventional food waste processor that processes moist organic matter, such as food waste, by simply crushing and heating without supplying the aforementioned ion gas (hereinafter simply referred to as the conventional biomass material), the temperature at which the maximum exothermic peak appears in differential thermal analysis is approximately 180°C to 260°C. That is, the biomass material according to the present embodiment has a significantly higher temperature at which the maximum exothermic peak appears in differential thermal analysis than in the conventional biomass material, and has clearly different physical properties from the conventional biomass material.

[0024] Here, when manufacturing a molded body by molding processes such as injection molding or extrusion molding, it is generally necessary to heat the raw material at a high temperature of 180°C to 260°C or higher. Therefore, if conventional biomass materials with low heat resistance are used as raw materials for the molded body, heating causes carbonization or oxidation to occur in the biomass material, resulting in deterioration of its physical properties, making it difficult to include them in the molding material as raw materials for the molded body.

[0025] In contrast, the biomass material according to the present embodiment has a temperature of 300°C or higher at which the maximum exothermic peak appears in differential thermal analysis and has high heat resistance. Therefore, when a molded body is manufactured by molding processing, it is difficult to carbonize or otherwise deteriorate due to heating, so there is no deterioration of physical properties, and it can be used as a raw material for a molded body.

[0026] Furthermore, it was confirmed that with conventional biomass materials, even if the moisture content is set to 20% or less immediately after production, the moisture content increases over time and eventually exceeds 20%. Additionally, with conventional biomass materials, if the moisture content exceeds 20%, the number of mesophilic aerobic bacteria measured by the standard agar plate culture method is 108 It was also confirmed that it was greater than / g. As a result, conventional biomass materials began to decompose after a certain period from manufacturing and could not maintain the state immediately after manufacturing for one year, making long-term preservation difficult.

[0027] Meanwhile, the biomass material according to the present embodiment obtains the aforementioned moisture content, the number of mesophilic aerobic bacteria, and the detection temperature of the maximum exothermic peak by differential thermal analysis even when measured after being left at room temperature for one year from production. For example, the biomass material according to the present embodiment obtained by processing coffee grounds or apple pomace was left at room temperature (20°C ± 15°C (5 to 35°C)) for about one year after production; however, when the moisture content was measured about one year after production, the moisture content was still 20% or less, and the number of mesophilic aerobic bacteria was 10 5 It can be confirmed that it is less than / g. In addition, even after about 1 year from manufacturing, in these biomass materials, the exothermic maximum peak is detected at 300[℃] or higher in differential thermal analysis.

[0028] Based on these verification results, it can be inferred that, unlike conventional biomass materials, the biomass material according to the present embodiment can maintain its moisture content and other properties for a long time as they were during manufacturing because many of the cell walls of the biomass material are not destroyed. Furthermore, it is inferred that by performing a treatment in which an ion gas with an ion density of 2 million [pcs / cc] or more is supplied into the treatment tank during manufacturing, various phenomena occur, such as reducing the size or polarity of water clusters during treatment, reducing the size of the polymer of the biomass material, making the polymer surface porous, sterilizing the biomass material, deodorizing the biomass material, or adjusting the polarity and size of the biomass material.

[0029] As a result, the moisture content, the number of mesophilic aerobic bacteria, and the detection temperature of the maximum exothermic peak by differential thermal analysis can be maintained at the time of manufacture for a long period, thereby providing a biomass material with high heat resistance that can be preserved for a long period.

[0030] (2) <Method for manufacturing biomass material according to the present embodiment>

[0031] (2-1) <Overall configuration of the processing apparatus used for manufacturing biomass materials according to the present embodiment>

[0032] Next, an example of a processing device used for manufacturing biomass material according to the present embodiment will be described. FIG. 1 is a cross-sectional view showing the cross-sectional configuration of the processing device (10) used for manufacturing biomass material according to the present embodiment when viewed from the side (24), and FIG. 2 is a cross-sectional view showing the cross-sectional configuration of the processing device (10) when viewed from the end (22).

[0033] As shown in FIGS. 1 and 2, the processing device (10) is equipped with a processing tank (12), a stirring unit (14), an ion gas supply unit (15), an exhaust unit (61), and a heater (72) to process a water-soluble organic material contained within the processing tank (12). The processing tank (12) has a bottom (20), a pair of end portions (22) (Fig. 1) facing each other in the long side direction, a pair of side portions (24) (Fig. 2) facing each other in the short side direction, and a top (25), and forms a sealed space inside. The processing tank (12) is not particularly limited, but can be formed, for example, of fiber-reinforced plastics (FRP). A support (26) is provided in the bottom (20) of the processing tank (12) through a load cell (28).

[0034] In addition, in the present embodiment, the treatment tank (12) is selected such that the length of the sealed space in the long side direction where a pair of ends (22) face each other is about 4.5 [m], the width of the sealed space in the short side direction where a pair of sides (24) face each other is about 2.3 [m], and the height of the sealed space from the top (25) to the bottom of the curved surface (78, 80) of the bottom (20) is about 1.6 [m].

[0035] The load cell (28) measures the load applied from the treatment tank (12) installed on the load cell (28), and when it receives a reset command from the control panel (not shown), it sets the measured value at the time the reset command was received as a reference value. Accordingly, the load cell (28) can set the weight of the organic matter before treatment as a reference value when the reset command is given immediately after the organic matter is received in the treatment tank (12), and based on the reference value, it can measure the weight reduction trend of the organic matter during treatment or the weight of the organic matter (biomass material) after the treatment is finished.

[0036] Additionally, the upper part (25) is provided with an inlet (68) that opens in the thickness direction at a predetermined position and a cover (70) that opens and closes the inlet (68). The cover (70) is rotatably fixed to the upper part (25) through a hinge at one end to open and close the inlet (68). As a result, the organic matter is introduced into the treatment tank (12) through the inlet (68) that is exposed when the cover (70) is in an open state, and is contained within the sealed treatment tank (12) when the cover (70) is in a closed state.

[0037] As shown in FIG. 2, a heater (72), such as a heating wire heater or a PTC heater, is provided on the side (24). The heater (72) heats the inside of the treatment tank (12) and changes the temperature inside the treatment tank (12) to a range of 25°C or higher and 70°C or lower. In addition, the temperature inside the treatment tank (12) is a value measured by a thermometer installed in a sealed space inside the treatment tank (12) in which the organic matter is contained.

[0038] As such, the phenomenon in which the temperature inside the treatment tank (12) fluctuates within the range of 25[℃] or higher and 70[℃] or lower is due to the temperature inside the treatment tank (12) changing according to the treatment state of the organic matter containing water, but it is preferable that the average temperature inside the treatment tank (12) be 30[℃] or higher and 50[℃] or lower when the temperature inside the treatment tank (12) is in the range of 25[℃] or higher and 70[℃] or lower. Here, the average temperature inside the treatment tank (12) is the average temperature when the treatment of the organic matter containing water is finally finished, after measuring the temperature inside the treatment tank (12) multiple times at predetermined intervals or at arbitrary timings when the temperature inside the treatment tank (12) is in the range of 25[℃] or higher and 70[℃] or lower due to heating by the heater (72).

[0039] When processing the organic matter in a heat treatment where the average temperature inside the treatment tank (12) is less than 30°C, it is difficult for the organic matter to dry out, so it is preferable that the average temperature inside the treatment tank (12) be 30°C or higher. In addition, when processing the organic matter in a heat treatment where the average temperature inside the treatment tank (12) exceeds 50°C, there is a risk that the organic matter will dry out excessively, and when the treatment is finished, the biomass material will become dust and easily diffuse into the atmosphere, so it is preferable that the average temperature inside the treatment tank (12) be 50°C or lower.

[0040] The stirring unit (14) provided within the treatment tank (12) has a first stirring unit (74) positioned on one side along the short side of the treatment tank (12) and a second stirring unit (76) positioned on the other side, as shown in FIG. 2. The first stirring unit (74) and the second stirring unit (76) have the same configuration and, as shown in FIG. 1, have a rotating shaft (30) positioned between the ends (22) and a blade (32) provided on the rotating shaft (30). The rotating shaft (30) is rotatably supported with respect to the treatment tank (12) by bearings (34) provided on each end (22). One end of the rotating shaft (30) is connected to a driving unit (36).

[0041] In the present embodiment, the first stirring unit (74) rotates counterclockwise and the second stirring unit (76) rotates clockwise, stirring the organic matter contained in the treatment tank (12) so as to guide it from the bottom (20) side of the treatment tank (12) toward the space between the first stirring unit (74) and the second stirring unit (76).

[0042] The bottom part (20) has a curved surface (78, 80) in the shape of an arc along the first stirring part (74) and the second stirring part (76). The curved surface (78, 80) is formed along the orbit in which each blade (32) of the first stirring part (74) and the second stirring part (76), which rotate around the rotation axis (30), rotates in a circular motion.

[0043] In addition to this configuration, an exhaust port (57) penetrating in the thickness direction at a predetermined position is provided in the upper part (25) of the treatment tank (12) in the present embodiment. An exhaust unit (61) is connected to the exhaust port (57) through a flow path (60). The exhaust unit (61) is, for example, a blower, and when processing organic matter in the treatment tank (12), it sucks in gas inside the treatment tank (12) and exhausts the gas inside the treatment tank (12) to the outside.

[0044] In this embodiment, the exhaust unit (61) preferably exhausts gas from the treatment tank (12) at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, more preferably at a rate of 50 [㎥ / min] or more and 300 [㎥ / min] or less. In addition, the amount of gas exhausted from the treatment tank (12) is the amount of gas exhausted from the exhaust unit (61) that discharges the gas from the treatment tank (12) to the outside air. For example, if the exhaust unit (61) is a blower, the amount of exhaust can be adjusted to a desired amount by adjusting the setting value of the blower.

[0045] Here, in the treatment tank (12), ion gas (here, gas containing negative ions (e.g., air containing negative ions)) is supplied from the ion gas supply unit (15) described later, in an amount equal to the amount of gas exhausted from the treatment tank (12). In this case, by exhausting gas from the treatment tank (12) at a rate of 1 [㎥ / min] or more, the amount of ion gas supplied from the ion gas supply unit (15) described later into the treatment tank (12) can be maintained at an optimal value, and the gas can be properly circulated within the treatment tank (12) to prevent the occurrence of condensation within the treatment tank (12) and to promote the vaporization of moisture from organic matter. By increasing the rate to 50 [㎥ / min] or more, the amount of ion gas supplied from the ion gas supply unit (15) can be increased, and the gas can be further circulated within the treatment tank (12) to more reliably obtain effects such as preventing the occurrence of condensation.

[0046] Meanwhile, by exhausting gas from the treatment tank (12) at a rate of 300 m³ / min or less, the ion gas induced into the treatment tank (12) from the ion gas supply unit (15) can be kept within the treatment tank (12), and the moisture of the organic matter can be excessively vaporized by the gas circulating within the treatment tank (12), thereby preventing the biomass material from becoming dust.

[0047] The ion gas supply unit (15) has a negative ion generator (38A), an upper supply pipe (40A) having an upper nozzle (44) formed therein, and a flow path (42) connecting the negative ion generator (38A) and the upper supply pipe (40A). The ion gas supply unit (15) generates negative ions from the negative ion generator (38A) by, for example, corona discharge or thermal ionization, and supplies the ion gas containing the negative ions to the upper supply pipe (40A) via the flow path (42), and discharges it into the treatment tank (12) from the upper nozzle (44) of the upper supply pipe (40A).

[0048] In this embodiment, outside air is drawn in from a negative ion generator (38A) along with the exhaust of gas from the treatment tank (12), and negative ions are generated in the gas passing through the negative ion generator (38A). The negative ion generator (38A) ionizes gas molecules by removing electrons from gas molecules, such as oxygen or nitrogen, contained in the outside air, for example.

[0049] Here, in this embodiment, the amount of ion gas supplied from the ion gas supply unit (15) into the treatment tank (12) is adjusted by adjusting the amount of gas exhausted from the treatment tank (12) by the exhaust unit (61). In this case, the ion gas supplied from the ion gas supply unit (15) into the treatment tank (12) preferably has an ion density of 2 million [pcs / cc] or more, preferably exceeding 20 million [pcs / cc], and more preferably exceeding 60 million [pcs / cc].

[0050] In addition, for example, "supplying ion gas with an ion density of 2 million [pcs / cc] or more at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less" means 2 million × 10 per minute. 6 =2×10 12[pcs] indicates the supply of more than ions. By supplying ions in this way, the ions diffuse effectively into the aqueous organic matter, promoting the separation of water molecules from the aqueous organic matter, and causing the water contained in the aqueous organic matter to evaporate, thereby reducing the amount of aqueous organic matter.

[0051] Furthermore, negative ions used in conventional food waste disposers are used to deodorize the interior of the food waste disposer and are not used from the perspective of directly affecting and treating the moist organic matter itself, such as food waste. Therefore, the ion gas generated in the food waste disposer has an ion density similar to that of an ion generator used in an air purifier, and is generally on the order of 106 [units / cc] (Reference 1: Japanese Patent Publication No. 2011-206665, Reference 2: Japanese Patent Publication No. 2008-175428).

[0052] The product specifications for the ion counter ITC-201A described in References 1 and 2 state that the sampling rate is "approximately 500cc / sec" (https: / / www.andes.co.jp / product / prd_ai / prd_ai_inti_itc-201a / ). Therefore, from 106 [pieces / cc] × 500 [cc / sec], 5 × 10 8[ It is calculated as [units / second], and when converted to per minute, it is 3 × 10 9 It is calculated as [units]. This value is the "2×10 per minute" of the present invention. 12 Compared to the figure [pcs] or more, it becomes a value about three orders of magnitude smaller.

[0053] For this reason, the ion gas used in conventional food waste processors only diffuses into the odor (gas) inside the processor, and the diffusion of negative ions into the food waste itself has not been considered.

[0054] In contrast, in the present embodiment, the ion density in the treatment tank (12) is set to 2 million [pcs / cc] or more, preferably 20 million [pcs / cc] or more, and more preferably 60 million [pcs / cc] or more, thereby making the ion density in the treatment tank (12) exceptionally high density compared to conventional food waste processors used for deodorization, so that negative ions in the ion gas diffuse reliably into the water-soluble organic matter, thereby promoting the separation of water molecules from the water-soluble organic matter.

[0055] Here, water molecules separated from the organic matter rise up within the treatment tank (12), and some of the water molecules, as they rise, break into cluster structures (e.g., 5 to 6) of water molecules, evaporate, and are released to the outside by the exhaust unit (61).

[0056] Meanwhile, the remaining water molecules, that is, water molecules maintaining a cluster structure, remain at the boundary between the stirred hydrolytic organic matter and the space filled with gas inside the treatment tank (12), but since ion gas is sprayed at the boundary, the negative ions in the ion gas break down the cluster structure of the water molecules. The water molecules whose cluster structure has been broken down easily evaporate due to the amount of heat applied by the heater (72) and are released to the outside by the exhaust part (61).

[0057] As described above, by making the ion density of the ion gas high, the ion gas separates the moisture contained in the organic matter from the organic matter, and also breaks down the cluster structure of water molecules. Therefore, the processing device (10) can easily reduce the moisture contained in the organic matter by evaporating it.

[0058] Here, by making the ion density in the treatment tank (12) greater than 20 million [pcs / cc], negative ions become more easily diffused into the organic matter, so that the moisture contained in the organic matter can be separated from the organic matter by the ion gas, and the decomposition of the cluster structure of water molecules can also be promoted. In addition, by making the ion density in the treatment tank (12) greater than 60 million [pcs / cc], negative ions can be diffused into the organic matter more effectively.

[0059] The upper supply pipe (40A) communicating with the negative ion generator (38A) has upper nozzles (44), for example, formed as circular openings, formed at predetermined positions and at predetermined intervals. Additionally, the upper supply pipe (40A) is arranged parallel to the rotation axis (30) and is provided at a position above the rotation axis (30).

[0060] In the present embodiment, the upper supply pipe (40A) is positioned above the organic matter when the organic matter is contained in the treatment tank (12), and when the organic matter is contained in the treatment tank (12), ion gas can be irradiated from above the organic matter through the upper nozzle (44) without being buried in the organic matter.

[0061] The upper supply pipe (40A) has a first pipe (64) and a second pipe (66) positioned on both sides with an exhaust port (57) located in the center of the short side of the treatment tank (12). The first pipe (64) is positioned to follow one side (24) (left side in FIG. 2), and the second pipe (66) is positioned to follow the other side (24) (right side in FIG. 2).

[0062] In the first pipe (64), a first upper nozzle (45) is formed as an upper nozzle (44), and in the second pipe (66), a second upper nozzle (47) is formed as an upper nozzle (44). It is preferable that the first upper nozzle (45) and the second upper nozzle (47) are opened in a vertical downward direction from the center direction of the horizontal treatment tank (12).

[0063] In this embodiment, a straight line a1 connecting the center of the first pipe (64) and the first upper nozzle (45), and a straight line a1 connecting the center of the second pipe (66) and the second upper nozzle (47) are extended toward the space between the first stirring section (74) and the second stirring section (76). Accordingly, the first pipe (64) and the second pipe (66) irradiate ion gas toward the boundary of the space filled with gas in the first stirring section (74) and the second stirring section (76) and the water-soluble organic matter guided from the bottom (20) of the treatment tank (12) to the space between the first stirring section (74) and the second stirring section (76).

[0064] (2-2) <Method for manufacturing biomass material using a processing device>

[0065] Next, a method for manufacturing biomass material from a hydrous organic material using a processing device (10) is described. In this case, the user introduces the hydrous organic material to be processed into a processing tank (12) and receives the hydrous organic material in a sealed space within the processing tank (12) (receiving process). Then, the user initiates the processing of the hydrous organic material in the processing device (10) by giving a processing start command through the control panel (not shown) of the processing device (10), thereby driving the stirring unit (14), exhaust unit (61), heater (72), and negative ion generator (38A).

[0066] In this case, when a processing device (10) is given a processing start command, it drives the stirring unit (14) and stirs the organic matter in the processing tank (12) (stirring process). In addition, at this time, the stirring of the organic matter by the stirring unit (14) is done to the extent that the organic matter circulates throughout the entire processing tank (12).

[0067] Additionally, when a processing device (10) is given a processing start command, it drives the exhaust unit (61) and starts exhausting gas from the processing tank (12) at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less (exhaust process), and at the same time drives the negative ion generator (38A) to generate negative ions in the gas.

[0068] The negative ion generator (38A) draws in outside air in an amount equal to the amount of gas exhausted from the treatment tank (12) by the exhaust unit (61), and ionizes gas molecules by removing electrons from gas molecules such as oxygen or nitrogen contained in the outside air. At this time, the amount of exhaust by the exhaust unit (61) is adjusted, and ion gas having, for example, an ion density of 2 million [pcs / cc] or more, preferably 20 million [pcs / cc] or more, and more preferably 60 million [pcs / cc] or more is supplied into the treatment tank (12) from the ion gas supply unit (15), and the treatment tank (12) is filled with ion gas (ion gas supply process).

[0069] In addition, at this time, the processing device (10) drives the heater (72) and heats the inside of the processing tank (12), and while the temperature inside the processing tank (12) is maintained between 25[℃] and 70[℃], the average temperature inside the processing tank (12) at the end of the processing in this temperature range is adjusted to be between 30[℃] and 50[℃] (heating process).

[0070] The treatment device (10) thus continuously performs stirring of the organic matter, heating within the treatment tank (12), exhaust of gas from within the treatment tank (12), and supply of ion gas having an ion density greater than a predetermined amount into the treatment tank (12) for a predetermined time (treatment process).

[0071] Accordingly, the treatment device (10) performs stirring or heating of the water-soluble organic material, circulation of gas within the treatment tank (12) by exhaust, and supply of ion gas within the treatment tank (12). Due to the synergistic effect, it is easy to separate water molecules contained in the water-soluble organic material, thereby decomposing the water-soluble organic material and simultaneously breaking down the cluster structure of water molecules, so that the water-soluble organic material is efficiently decomposed. As a result, the water-soluble organic material treated by the treatment device (10) can finally reach a desired moisture content and become a biomass material with a significantly reduced weight compared to the original water-soluble organic material.

[0072] Here, it is preferable to determine the time for terminating the treatment of the organic matter based on the moisture content of the organic matter. More specifically, it is preferable to terminate the treatment of the organic matter when the moisture content of the biomass material is 2% or more and 20% or less, more preferably 10% or more and 20% or less. In addition, the moisture content is a value measured by the above-described drying loss method.

[0073] If the moisture content of the biomass material obtained by treating the organic matter is less than 2%, the biomass material becomes excessively dry and turns into dust, and when the treatment tank (12) is opened, the biomass material flies into the atmosphere, so it is desirable for the moisture content of the biomass material to be 2% or more. In addition, by making the moisture content of the biomass material 20% or less, the number of mesophilic aerobic bacteria is 10 5The amount can be reduced to 1 / g or less, and biomass material can be used as a raw material for the molded body. When biomass material is incorporated into the molded material, it is desirable to keep the moisture content of the biomass material between 10% and 20% for ease of handling.

[0074] In addition, the processing time of such water-soluble organic matter varies depending on the amount of water-soluble organic matter input, the type of water-soluble organic matter, the moisture state of the water-soluble organic matter, the heating temperature inside the treatment tank (12), the amount of ion gas supplied, the amount of gas exhausted from the treatment tank (12), etc. However, if the water content is 40% or more and 90% or less, and the amount is approximately 30% or more and 300% or less, then for general vegetable waste or organic matter residue after beverage extraction, for example, by treating the water-soluble organic matter continuously for a time of 2 hours or more and 70 hours or less with an ion density of 60 million [pcs / cc] or more under the processing conditions described above, a biomass material with a water content of 20% or less can be obtained.

[0075] In addition, generally, in treatment tanks at low temperatures of 50°C or lower, the number of mesophilic aerobic bacteria in the aqueous organic matter is 10 5 It is difficult to keep it below / g. However, in the treatment device (10), when treating the water-soluble organic material, by supplying ion gas to the water-soluble organic material in addition to stirring the water-soluble organic material and circulating gas within the treatment tank (12), even if the average temperature within the treatment tank (12) is lowered to 50[℃] or lower, due to the synergistic effect of these, the number of mesophilic aerobic bacteria in the biomass material is reduced to 10 in a short time. 5 It can be done at / g or less.

[0076] In addition, in addition to the above, if the purpose is to reduce the total amount of organic matter by treating the organic matter, the treatment time of the organic matter may be determined based on the result of measuring the weight of the organic matter obtained by the load cell (28). In the treatment device (10), the organic matter before treatment in the treatment tank (12) can be reduced to 1 / 8 or 1 / 3 by continuously treating the organic matter for a period of 2 hours or more and 70 hours or less under the above-described treatment conditions.

[0077] In this case, the processing device (10) can detect, by means of a load cell (28), that the weight of the organic matter before processing in the processing tank (12) has decreased to one-eighth or less and one-third or less, and notify the user of the end of the processing of the organic matter by means of sound or light, etc.

[0078] (3) <Molding Material>

[0079] Next, a molding material comprising the biomass material described above will be described. The molding material according to the present embodiment comprises, in addition to the biomass material described above, at least one of a thermoplastic resin, a thermosetting resin, and a resin additive. In this case, it is preferable that the molding material contains at least 5 [mass%] of the biomass material, preferably 10 [mass%] or more, and more preferably 30 [mass%] or more. By including at least 5 [mass%] of the biomass material, the bending strength of the molded body can be improved compared to conventional general-purpose PP (polypropylene resin) molded bodies.

[0080] In addition, when considering cost reduction, it is desirable to include biomass material in the molding material in an amount of 50 [mass%] or more, preferably 70 [mass%] or more, and more preferably 95 [mass%] or more. By increasing the content of biomass material included in the molding material, the content of thermoplastic resin, thermosetting resin, or resin additives can be reduced by that amount, and more biomass material can be recycled. Furthermore, since biomass material produced using generally discarded water-based organic matter is inexpensive, manufacturing costs, such as raw material costs for the molding material, can be reduced by reducing the content of thermoplastic resin, thermosetting resin, or resin additives and increasing the content of said biomass material.

[0081] In the molding material, the remainder other than the biomass material is not particularly limited, but it is preferable to include at least one of, for example, a thermoplastic resin, a thermosetting resin, and a resin additive. As the remainder other than the biomass material, one of these thermoplastic resins, thermosetting resins, and resin additives may be used alone or two or more may be used in combination.

[0082] Thermoplastic resins are not particularly limited, but examples include polypropylene resin (PP), polyethylene resin (PE), polyvinyl chloride resin (PVC), polystyrene resin (PS), ABS resin, AS resin (acrylonitrile styrene), acrylic resin (PMMA), polybutylene terephthalate resin (PBT), and polyethylene terephthalate resin (PET). These may be used individually or in combination of two or more types.

[0083] In addition, thermosetting resins are not particularly limited, but examples include epoxy resin, phenolic resin, urea resin, melamine resin, unsaturated polyester resin, diallyl phthalate resin, polyurethane resin, silicon resin, polyimide resin, polyaminoamide resin, etc. These may be used individually or in combination of two or more types.

[0084] Additives for resins are not particularly limited, but examples include flame retardants, heat stabilizers, light stabilizers, colorants, antioxidants, antistatic agents, lubricants, etc. One of these may be used alone, or two or more may be used in combination.

[0085] (4) <Method for manufacturing molding material>

[0086] Next, a method for manufacturing a molding material is described. First, a biomass material is manufactured according to the method for manufacturing a biomass material described above, and then foreign matter is removed from the biomass material using a vibrating sieve. The biomass material from which foreign matter has been removed, and at least one of a thermoplastic resin, a thermosetting resin, and a resin additive, are fed into a mixer and mixed to obtain a molding material.

[0087] The obtained molding material can be fed into, for example, an extrusion assembly machine, formed into pellets, and dried by a dehumidifying dryer to produce a molding material in the form of pellets (manufacturing process).

[0088] In addition, as a molding material, it may be used in the form of powder mixed by a mixer, or, as described above, it may be used in the form of pellets by an extrusion aggregator or a dehumidifying dryer.

[0089] The molding material obtained in this way can be formed into a predetermined shape by known molding processes such as injection molding or extrusion molding, thereby enabling the production of a molded body having a desired shape.

[0090] (5) <Movements and Effects>

[0091] In the above composition, this molding material is a biomass material obtained from water-hydrated organic matter, having a moisture content of 20% or less, and also having a bacterial count of mesophilic aerobic bacteria of 10 5 Biomass material is used that has a value of 1 / g or less and in which the maximum exothermic peak is detected at 300°C or higher in differential thermal analysis. As such, since the molding material uses a biomass material in which the detection temperature of the maximum exothermic peak in differential thermal analysis is higher than that of conventional biomass materials, it can be heated at a higher temperature than conventional materials during molding processing.

[0092] In addition, as a method for manufacturing such biomass material, first, the water-soluble organic material contained in the treatment tank (12) is stirred in the stirring unit (14), and the inside of the treatment tank (12) is heated by a heater (72). Also, at the same time, in the treatment device (10), gas is exhausted from the inside of the treatment tank (12) by the exhaust unit (61) at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, and in conjunction with this exhaust, an ion gas having an ion density of 2 million [pcs / cc] or more is supplied into the treatment tank (12) from the ion gas supply unit (15) to treat the water-soluble organic material (treatment process).

[0093] In this way, the biomass material according to the present embodiment can be produced by treating the organic matter with a mixture of

[0094] In addition, in the treatment device (10), during the treatment of the organic matter containing water, the temperature inside the treatment tank (12) is increased by a heater (72) to a range of 25°C or higher and 70°C or lower, preferably to an ion density of 60 million [pcs / cc] or higher, and the treatment of the organic matter containing water in the treatment tank (12) is preferably carried out continuously for a period of 2 hours or more and 70 hours or less. By doing so, biomass materials according to this embodiment can be produced from various organic matter containing water with different moisture content, etc.

[0095] The biomass material according to the present embodiment obtained in this way has a moisture content of 20% or less and a bacterial count of mesophilic aerobic bacteria of 10 5 The manufacturing state, such as a value of 1 / g or less and a detection temperature of the maximum exothermic peak by differential thermal analysis of 300°C or higher, can be maintained even when left at room temperature for one year from manufacturing. Therefore, it is possible to provide a biomass material that can be preserved for a long period, thereby realizing a molded material that is easy to handle.

[0096] In addition, regarding conventional biomass materials manufactured for the reuse of organic matter, the detection temperature of the maximum exothermic peak by differential thermal analysis is less than 300°C, and thus the heat resistance is low, making it difficult to use in molding processes that require heating at high temperatures, such as injection molding or extrusion molding. However, the biomass material according to the present embodiment can have the detection temperature of the maximum exothermic peak by differential thermal analysis set to 300°C or higher, so it can be used in molding processes that are heated at high temperatures.

[0097] (6) <Other embodiments>

[0098] The present invention is not limited to the above embodiments and can be appropriately modified within the scope of the spirit of the present invention, and various sizes of treatment tanks may be applied as treatment tanks. Furthermore, in the above-described embodiments, a negative ion generator (38A) is provided as an ion gas supply unit, and an ion gas supply unit (15) is applied to supply ion gas into the treatment tank (12) such that the ion density of the negative ions is 2 million [pcs / cc] or more, preferably exceeding 20 million [pcs / cc], and more preferably exceeding 60 million [pcs / cc], but the present invention is not limited to this. For example, a positive ion generator may be provided as an ion gas generator, and an ion gas supply unit may be applied to supply ion gas into the treatment tank (12) such that the ion density of the positive ions is 2 million [pcs / cc] or more, preferably exceeding 20 million [pcs / cc], and more preferably exceeding 60 million [pcs / cc].

[0099] In addition, as an ion gas supply unit, an ion generator that generates both positive and negative ions may be provided, and an ion gas supply unit that supplies ion gas into the treatment tank (12) such that the combined ion density of the positive and negative ions is 2 million [pcs / cc] or more, preferably 20 million [pcs / cc] or more, and more preferably 60 million [pcs / cc] or more may be applied.

[0100] In addition, in the above-described embodiment, a blower is provided as the exhaust part (61) to forcibly exhaust gas from the treatment tank (12), but the present invention is not limited to this. For example, a blower serving as the intake part may be provided in the negative ion generator (38A) which serves as the suction side, and the exhaust part may be made into a simple filter, etc., so that the gas in the treatment tank (12) is exhausted from the exhaust part at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less by suction from the intake part.

[0101] (7) <Verification Test>

[0102] (7-1) <Moisture content of biomass material and number of mesophilic aerobic bacteria according to the present embodiment>

[0103] Next, apple pomace, peach pomace, carrot pomace, bell pepper pomace, rice pomace, green tea pomace, barley tea pomace, and coffee pomace were prepared as water-soluble organic materials after beverage extraction, and biomass materials were prepared separately from each water-soluble organic material according to the manufacturing method described above, and the moisture content and the number of mesophilic aerobic bacteria of each biomass material were investigated.

[0104] Here, gas is exhausted from the treatment tank (12) at a rate of 50 m³ / min, the ion density of the ion gas supplied into the treatment tank (12) is maintained at approximately 60 million [pcs / cc], the temperature inside the treatment tank (12) during the treatment of the organic matter is maintained at 20 to 70 degrees, and this treatment is performed continuously for a predetermined time.

[0105] Specifically, 200 kg of apple pomace with a moisture content of 78.9% after beverage extraction was prepared, and the processing device (10) was used to process it continuously for 42 hours with an ion density of about 60 million [pcs / cc] according to the processing conditions described above. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 3.2% and the weight was 45 kg. It was confirmed that the obtained biomass material decreased to approximately one-fifth of its weight before processing.

[0106] In addition, 40 kg of peach peach peach pulp with a moisture content of 71.0% after beverage extraction was prepared, and the peach peach peach pulp was treated continuously for 18 hours using a processing device (10) according to the processing conditions described above, with an ion density of approximately 60 million [pcs / cc]. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 6.2% and the weight was 12 kg. It was confirmed that the obtained biomass material decreased to approximately one-fourth of its weight before processing.

[0107] In addition, 231 kg of carrot pulp with a moisture content of 87.1% after beverage extraction was prepared, and the processing device (10) was used to process it continuously for 48 hours with an ion density of approximately 60 million [pcs / cc] according to the processing conditions described above. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 2.8% and the weight was 24 kg. It was confirmed that the obtained biomass material decreased to approximately one-tenth of its weight before processing.

[0108] In addition, 200 kg of bell pepper meal with a moisture content of 84.4% after beverage extraction was prepared, and the processing device (10) was used to process it continuously for 48 hours with an ion density of approximately 60 million [pcs / cc] according to the processing conditions described above. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 12.1% and the weight was 68 kg. It was confirmed that the obtained biomass material decreased to approximately one-third of its weight before processing.

[0109] In addition, 189 kg of lees (containing wheat bran) with a moisture content of 45.0% after beverage extraction was prepared, and the ion density was set to approximately 60 million [pcs / cc] using a processing device (10) and processed continuously for 48 hours according to the processing conditions described above. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 3.5% and the weight was 96 kg. It was confirmed that the obtained biomass material decreased by approximately half from its weight before processing.

[0110] In addition, 106 kg of green tea pomace with a moisture content of 86.4% after beverage extraction was prepared, and the pomace was processed continuously for 24 hours using a processing device (10) according to the processing conditions described above, with an ion density of approximately 60 million [pcs / cc]. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 2.3% and the weight was 17 kg. It was confirmed that the obtained biomass material decreased to approximately one-sixth of its weight before processing.

[0111] In addition, 130 kg of barley tea husks with a moisture content of 80.2% after beverage extraction were prepared, and the ion density was set to approximately 60 million [pcs / cc] using a processing device (10) according to the processing conditions described above, and the material was processed continuously for 18 hours. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 20% or less and the weight was 69 kg. It was confirmed that the obtained biomass material decreased by approximately half from its weight before processing.

[0112] In addition, 303 kg of coffee grounds with a moisture content of 47.0% after beverage extraction were prepared, and the processing device (10) was used to process the grounds continuously for 68 hours with an ion density of approximately 60 million [pcs / cc] according to the processing conditions described above. The moisture content and weight of the obtained biomass material were investigated, and it was confirmed that the moisture content was 19.8% or less and the weight was 109 kg. It was confirmed that the obtained biomass material decreased to approximately one-third of its weight before processing.

[0113] (7-2) <Verification test regarding moisture reabsorption when biomass material according to the present embodiment is stored for a long period>

[0114] Next, the apple juice residue (apple pomace) remaining after producing apple juice was processed using the processing device (10) of the present embodiment to produce biomass material. In addition, the coffee residue (coffee grounds) was also processed using the processing device (10) of the present embodiment to produce biomass material.

[0115] Here, gas is exhausted from the treatment tank (12) at a rate of 50 m³ / min, the ion density of the ion gas supplied into the treatment tank (12) is maintained at 60 million [pcs / cc] or more, the temperature inside the treatment tank (12) during the treatment of the organic matter is maintained at 20°C to 70°C, and this treatment is performed continuously for about 20 hours to produce biomass materials separately in the form of apple pomace and coffee grounds. In addition, in this verification test, apple pomace and coffee grounds different from the apple pomace and coffee grounds of the example described in the verification test above were used.

[0116] Regarding the biomass material produced by processing apple pomace using the processing device (10) (hereinafter referred to as apple pomace biomass material) and the biomass material produced by processing coffee grounds using the processing device (10) (hereinafter referred to as coffee grounds biomass material), the re-absorption of moisture when stored for a long period without performing treatments such as strict sealing was observed.

[0117] In addition, regarding the biomass material according to the present embodiment obtained by processing coffee grounds or apple pomace, prior to conducting this verification test, it was left outdoors at room temperature (20°C ± 15°C (5 to 35°C)) for about one year after manufacturing, and even after about one year from manufacturing, the moisture content was 20% or less and the number of mesophilic aerobic bacteria was 10 5 Although it was confirmed that the maximum exothermic peak was 300°C or higher in differential thermal analysis with a value of less than 1g, at that time it was not a verification test from these perspectives, so this verification test was performed once again.

[0118] In this verification test, a flexible container bag with a capacity of 1,000 kg (manufactured by Atsuta Shizai Co., Ltd., product name AS-002F (one-way container bag)) formed of a sheet woven from strong chemical fibers such as polyethylene or polypropylene was prepared.

[0119] On June 20, 2019, at a factory located in Hirosaki City, Aomori Prefecture, Japan, the aforementioned apple pomace biomass material was produced, and the apple pomace biomass material was placed into the said flexible container bag to fill the entire flexible container bag with the apple pomace biomass material. Then, the opening of the flexible container bag filled with the apple pomace biomass material was connected and sealed.

[0120] Flexible container bags filled with such apple pomace biomass material were simply arranged without being stacked inside a warehouse on the site of the aforementioned factory (in Hirosaki City, Aomori Prefecture, Japan) and left as they were. In addition, the warehouse where the flexible container bags were left had side walls made of concrete blocks and a roof made of sheet metal, and was a warehouse that could protect against rain and wind without using insulation materials.

[0121] In addition, coffee grounds biomass material was prepared in the same way, filled into flexible container bags, and sealed by connecting the openings, and left in the same warehouse where flexible container bags filled with apple grounds biomass material were left.

[0122] Here, the moisture content of the apple pomace biomass material and the coffee grounds biomass material was measured at the start of the verification test by filling a flexible container bag. The moisture content in this verification test is the value measured by the aforementioned dry loss method.

[0123] Verification tests for the apple pomace biomass material began on June 20, 2019, and the moisture content at the start of the verification test was 11.8%. Then, flexible container bags filled with the apple pomace biomass material were left at room temperature in the aforementioned warehouse in Hirosaki City, Aomori Prefecture, Japan, and on January 7, 2020, the moisture content of the apple pomace biomass material inside the flexible container bags was measured again.

[0124] In addition, the period for conducting the verification test was selected as the time of exposure to summer (30°C) and winter (-10°C) environments (June 2019 to July 2020) in order to check for the effects of seasonal changes or temperature fluctuations.

[0125] The moisture content of the apple pomace biomass material in the flexible container bag, which was left in the warehouse from June 20, 2019 to January 7, 2020, was 12.2%. In addition, regarding the apple pomace biomass material, during the verification test, a bacterial count test was also performed, and the flexible container bag was opened approximately every month. From the results of the verification test above, it was confirmed that the apple pomace biomass material produced by the processing device (10) of the present embodiment can have a moisture content of 20% or less at the time of production, and can maintain the moisture content at 20% or less for a long period (approximately 6 months). In addition, as of June 2020, it was confirmed that the apple pomace biomass material can maintain the moisture content at 20% or less for a long period.

[0126] In addition, the coffee grounds biomass material was tested starting on July 6, 2019, and the moisture content at the start of the test was 9.4%. Then, a flexible container bag filled with the coffee grounds biomass material was left at room temperature in the aforementioned warehouse in Hirosaki City, Aomori Prefecture, Japan, and on January 7, 2020, the moisture content of the coffee grounds biomass material inside the flexible container bag was measured again.

[0127] The moisture content of the coffee grounds biomass material inside the flexible container bag, which was left in the warehouse from July 6, 2019, to January 7, 2020, was 9.4%. From this, it was confirmed that for the coffee grounds biomass material with a moisture content of 20% or less at the time of manufacturing, the moisture content at the time of manufacturing could be maintained at 20% or less for a long period (approximately 6 months). In addition, as of June 2020, it was also confirmed that for the coffee grounds biomass material, the moisture content at the time of manufacturing could be maintained at 20% or less for a long period.

[0128] For these apple pomace biomass materials and coffee grounds biomass materials, the number of mesophilic aerobic bacteria measured by the standard agar plate culture method is 10 5 It was also confirmed that it was less than / g. In this verification test, although the measurement results were obtained from biomass material preserved for about 6 months, no drastic changes were observed in the trends of moisture content, and it was once again confirmed that long-term preservation for 1 year is possible.

[0129] Furthermore, it was confirmed that conventional biomass materials produced by conventional food waste processors, which process moist organic matter such as food waste by heating while crushing, show an increase in moisture content over time even if the moisture content is set to 20% or less immediately after production, generally exceeding 20% ​​after about 3 to 4 months. As a result, the conventional biomass materials showed a bacterial count of mesophilic aerobic bacteria of 10 8 It was also confirmed that spoilage begins when the amount exceeds 1g, making long-term preservation difficult.

[0130] In this verification test, biomass materials prepared from apple pomace and coffee grounds were preserved for a long period and a verification test regarding moisture reabsorption was conducted. However, from the verification results of the biomass materials obtained from these apple pomace and coffee grounds, it can be inferred that other peach pomace, carrot pomace, bell pepper pomace, rice pomace, green tea pomace, and barley tea pomace can also maintain the moisture content at the time of preparation at 20% or less for a period.

[0131] That is, the biomass material according to the present embodiment is heated while stirring the water-containing organic material in a treatment tank (12), and also exhausts gas from the treatment tank (12) at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, and supplies an ion gas with an ion density of 2 million [pcs / cc] or more into the treatment tank (12) at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, thereby separating the water molecules of the water-containing organic material and evaporating the moisture contained in the water-containing organic material. Through this treatment, unlike conventional biomass materials, many cell walls of the biomass material are not destroyed, and the moisture content can be maintained at 20% or less for a long time.

[0132] Therefore, it can be inferred that, in the case of biomass materials prepared from peach pomace, carrot pomace, bell pepper pomace, rice pomace, green tea pomace, and barley tea pomace by the above treatment, just like the biomass materials prepared from apple pomace and coffee pomace, many cell walls of the biomass materials are not destroyed and the moisture content can be reduced to 20% or less, so the moisture content can be maintained for a long time.

[0133] (7-3) <Verification test regarding thermogravimetric analysis, differential thermogravimetric analysis, and differential thermogravimetric analysis of biomass materials according to the present embodiment>

[0134] Next, the apple juice residue (apple pomace) remaining when making apple juice, the carrot juice residue (carrot pomace) remaining when making carrot juice, and the coffee juice residue (coffee grounds) were each processed separately using a processing device (10) to produce biomass materials.

[0135] As for the treatment conditions, similar to the verification test described above, gas was exhausted from the treatment tank (12) at a rate of 50 m³ / min, the ion density of the ion gas supplied into the treatment tank (12) was maintained at 60 million [pcs / cc] or higher, the temperature inside the treatment tank (12) during the treatment of the water-soluble organic matter was maintained at 20°C to 70°C, and this treatment was performed continuously for about 20 hours. Then, biomass materials were manufactured separately from apple pomace, carrot pomace, and coffee grounds. In addition, in this verification test, apple pomace, carrot pomace, and coffee grounds different from those described in the verification test described above were used.

[0136] For the obtained biomass material, thermogravimetric analysis was performed to investigate weight loss by heating the biomass material, differential thermogravimetric analysis was performed to differentiate the thermogravimetric measurement results, and differential thermal analysis was performed to investigate endothermic or exothermic reactions when the biomass material was heated.

[0137] Thermogravimetric analysis, differential thermogravimetric analysis, and differential thermogravimetric analysis of biomass materials were measured using a differential thermogravimetric simultaneous measurement device (product name "TG / DTA7220") manufactured by SII Nanotechnology Co., Ltd.

[0138] In this case, a biomass material serving as a sample and alumina serving as a reference material were installed in a differential thermogravimetry device, and the sample (biomass material) and the reference material (alumina) were heated in the atmosphere and the temperature was raised from 30°C to 500°C. At that time, the sample thermogravimetry curve (TG (Thermo Gravimetry) curve), the differential thermogravimetry curve (DTG (Differential Thermo-Gravimetry) curve), and the differential thermal analysis curve (DTA (Differential Thermal Analysis) curve) were measured by the differential thermogravimetry device.

[0139] As a result, the results shown in Fig. 3 (labeled as "Sample name: Apple") were obtained for the biomass material prepared from apple pomace. Fig. 3 shows the measurement results of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis performed on the biomass material prepared from apple pomace.

[0140] In Fig. 3, the TG curve, which is the measurement result of thermogravimetric analysis, is plotted with temperature [°C] on the horizontal axis and weight (mass) change [mg] on the vertical axis. In addition, the DTG curve, which is the measurement result of differential thermogravimetric analysis, is plotted with temperature [°C] on the horizontal axis and weight (mass) change rate [μg / min] on the vertical axis. The DTA curve, which is the measurement result of differential thermogravimetric analysis, is plotted with temperature [°C] on the horizontal axis and the output of the thermocouple's electromotive force [uV] as heat flow on the vertical axis.

[0141] From the TG curve in Fig. 3, weight loss (weight loss of about 0.25 mg (about 10%)) occurred mainly due to moisture contained in the sample from the test start temperature of 30°C to 200°C. Afterwards, further weight loss occurred around 350°C and combustion occurred towards 500°C.

[0142] In the DTG curve of Fig. 3, a peak is seen at 70°C to 80°C, and peaks are also seen around 220°C and 350°C. This is thought to be associated with weight loss.

[0143] In the DTA curve of Fig. 3, an endothermic peak was observed up to 100°C due to the heat of vaporization associated with the volatilization of water. Additionally, an exothermic peak was observed around 310°C, which is presumed to be the exothermic reaction associated with the generation of thermal decomposition gases due to heating. Furthermore, regarding the steep peak from around 430°C, it is thought to be due to combustion leading to carbonization, and a maximum exothermic peak appeared around 500°C, suggesting that carbonization was occurring.

[0144] From the above, it was confirmed that the biomass material made from apple pomace has high heat resistance, as the maximum exothermic peak was detected at least 400°C or higher in differential thermal analysis.

[0145] For the biomass material prepared from carrot meal, the results as shown in Fig. 4 (labeled as "Sample name: Carrot") were obtained. Fig. 4 shows the measurement results (TG curve, DTG curve, and DTA curve) of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis performed on the biomass material prepared from carrot meal.

[0146] From the TG curve in Fig. 4, weight loss (weight loss of about 0.3 mg (about 10%)) mainly caused by moisture contained in the sample occurred from the test start temperature of 30°C to 200°C. Afterwards, further weight loss occurred around 320°C and combustion proceeded toward 500°C.

[0147] In the DTG curve of Fig. 4, peaks were observed around 220°C, 250°C, and 320°C. This is thought to be associated with weight loss.

[0148] In the DTA curve of Fig. 4, an endothermic peak was observed up to 200°C due to the heat of vaporization associated with the volatilization of water. Additionally, an exothermic peak was observed around 310°C, which is presumed to be the exothermic reaction associated with the generation of thermal decomposition gases due to heating. Furthermore, regarding the steep peak rising toward 500°C, it is thought to be due to combustion leading to carbonization, and it was presumed that carbonization occurred as a maximum exothermic peak appeared around 500°C.

[0149] From the above, it was confirmed that the biomass material prepared from carrot meal has high heat resistance, as the maximum exothermic peak was detected at least at 400°C or higher in differential thermal analysis.

[0150] For the biomass material prepared from coffee grounds, the results as shown in Fig. 5 (labeled as "Sample name: Coffee") were obtained. Fig. 5 shows the measurement results (TG curve, DTG curve, and DTA curve) of thermogravimetric analysis, differential thermogravimetric analysis, and differential thermal analysis performed on the biomass material prepared from coffee grounds.

[0151] From the TG curve in Fig. 5, weight loss (weight loss of about 0.3 mg (about 10%)) mainly caused by moisture contained in the sample occurred from the test start temperature of 30°C to 250°C. Afterwards, further weight loss occurred around 350°C and combustion proceeded toward 500°C.

[0152] In the DTG curve of Fig. 5, peaks were observed around 300°C and 400°C. This is thought to be associated with weight loss.

[0153] In the DTA curve of Fig. 5, an endothermic peak was observed up to 200°C due to the heat of vaporization associated with the volatilization of water. Additionally, an exothermic peak was observed around 340°C, which is presumed to be the exothermic reaction associated with the generation of thermal decomposition gases due to heating. Furthermore, regarding the steep peak rising toward 500°C, it is thought to be due to combustion leading to carbonization, and a maximum exothermic peak appeared around 510°C, suggesting that carbonization was occurring.

[0154] From the above, it was confirmed that the biomass material made from coffee grounds has high heat resistance, as the maximum exothermic peak was detected at least at 400°C or higher in differential thermal analysis.

[0155] Accordingly, the biomass materials produced by the processing device (10) as apple pomace, carrot pomace, and coffee pomace, respectively, have a maximum peak temperature of exothermic reaction in differential thermal analysis and are at least 400°C, which is higher than that of conventional biomass materials, so it was confirmed that they can be heated at a higher temperature than conventional materials during molding processing.

[0156] (7-4) <Physical properties of a molded article manufactured using the molding material according to the present embodiment>

[0157] Next, the physical properties of a molded body manufactured using the molding material according to the present embodiment were verified. Here, a biomass material was manufactured by processing coffee grounds (coffee grounds) using the processing device (10) of the present embodiment. Then, foreign matter was removed from the biomass material using a vibrating sieve. The obtained biomass material and polypropylene resin (PP) were mixed using a mixer to manufacture a molding material.

[0158] Here, two types of molding materials were prepared as examples. One type is a molding material comprising 30 [mass%] of the above-mentioned biomass material obtained by processing coffee grounds and 70 [mass%] of polypropylene resin (PP) (the molding material that becomes the molded body of Example 1). The other type is a molding material comprising 50 [mass%] of the above-mentioned biomass material obtained by processing coffee grounds and 50 [mass%] of polypropylene resin (PP) (the molding material that becomes the molded body of Example 2).

[0159] The treatment conditions for manufacturing biomass materials are as described above as in the verification test, in which gas is exhausted from the treatment tank (12) at a rate of 50 m³ / min, the ion density of the ion gas supplied into the treatment tank (12) is maintained at 60 million [pcs / cc] or more, the temperature inside the treatment tank (12) during the treatment of the water-soluble organic matter is maintained at 20 to 70 ℃, and this treatment is carried out continuously for about 20 hours.

[0160] Next, cylindrical molded bodies (Examples 1 and 2) were each manufactured from the two types of molding materials above by injection molding using a commercially available injection molding machine.

[0161] In addition, separately from this, as a comparative example, a cylindrical molded body composed of 100 [mass%] polypropylene resin (PP) was manufactured by injection molding under the same conditions as Examples 1 and 2 (general-purpose PP).

[0162] For these Examples 1, 2 and Comparative Example, the specific gravity was measured using a specific gravity measuring device, and Example 1 was 1.025, Example 2 was 1.101, and Comparative Example was 0.91.

[0163] For Examples 1, 2 and Comparative Example, the tensile stress was investigated according to "JIS K7113" using a tension measuring device, and Example 1 was 26 [Mpa], Example 2 was 35 [Mpa], and Comparative Example was 35 [Mpa].

[0164] In addition, for Examples 1 and 2 and the Comparative Example, the bending modulus and bending strength were investigated according to "JIS K7171" using a bending modulus measuring device and a bending strength measuring device, respectively. As a result, the bending modulus of Example 1 was 2.000 [MPa], the bending modulus of Example 2 was 3.570 [MPa], and the bending modulus of the Comparative Example was 1.350 [MPa]. In addition, the bending strength of Example 1 was 46 [MPa], the bending strength of Example 2 was 55 [MPa], and the bending strength of the Comparative Example was 41 [MPa].

[0165] In addition, for Examples 1, 2 and Comparative Example, the Charpy impact strength was investigated according to "JIS K7111" using an impact strength measuring device, and Example 1 was 2.9 [kJ / m2], Example 2 was 3.3 [kJ / m2], and Comparative Example was 3.3 [kJ / m2].

[0166] In addition, regarding Examples 1, 2 and Comparative Example, the heat deformation temperature at which the external shape is deformed by heating was investigated, and Example 1 was 115[℃], Example 2 was 130[℃], and Comparative Example was 100[℃].

[0167] From the above, it was confirmed that Examples 1 and 2, using the molding material according to the present embodiment, showed improvements in bending modulus, bending strength, and heat distortion temperature compared to general-purpose PP products. In addition, a molded body was produced by an injection molding machine using a molding material in which the above biomass material obtained by processing coffee grounds was 10 [mass%] and polypropylene resin (PP) was 90 [mass%], and the bending modulus, bending strength, and heat distortion temperature were measured for said molded body, and it was also confirmed that the bending modulus, bending strength, and heat distortion temperature were improved compared to general-purpose PP products. Explanation of the symbols

[0168] 10: Processing unit 12: Treatment tank 14 : Stirring section 15: Ion gas supply unit 38A : Negative ion generator (ion generator) 61: Exhaust section 72 : Heater

Claims

Claim 1 As a molding material used as a material for a molded body, a biomass material obtained from hydrated organic matter and a thermoplastic resin or a thermosetting resin Including, the biomass material has a moisture content of 20% or less, and also has a bacterial count of 10 mesophilic aerobic bacteria. 5 A molding material having a value of / g or less, and in which the maximum exothermic peak of the differential thermal analysis (DTA) curve is detected at 300°C or higher. Claim 2 In claim 1, the biomass material is a molding material in which the maximum exothermic peak is detected at 350[℃] or higher and 700[℃] or lower. Claim 3 A molding material according to claim 1 or 2, wherein the functional organic material is any one of vegetable waste, fruit waste, pruning grass, organic residue after beverage extraction, meat waste, fish waste, filth, and waste food. Claim 4 In paragraph 3, the organic residue after beverage extraction is any one of apple pomace, tangerine pomace, grape pomace, grapefruit pomace, peach pomace, carrot pomace, bell pepper pomace, wine pomace, green tea pomace, barley tea pomace, and coffee pomace, forming material. Claim 5 A molding material in the form of a pellet, as in paragraph 1 or 2. Claim 6 A molded body manufactured by molding the molding material described in paragraph 1 or 2. Claim 7 A method for manufacturing a molding material used as a material for a molded body, comprising: a receiving process for receiving a water-soluble organic material in a treatment tank; a treatment process for manufacturing a biomass material by heating the water-soluble organic material while stirring it in the treatment tank, exhausting gas from the treatment tank at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, and supplying an ion gas having an ion density of 2 million [pcs / cc] or more into the treatment tank at a rate of 1 [㎥ / min] or more and 300 [㎥ / min] or less, thereby separating water molecules of the water-soluble organic material and evaporating the moisture contained in the water-soluble organic material; and a manufacturing process for manufacturing a molding material by mixing a thermoplastic resin or a thermosetting resin with the biomass material. Claim 8 A method for manufacturing a molding material according to claim 7, wherein the treatment process involves maintaining the temperature inside the treatment tank within a range of 25[℃] or higher and 70[℃] or lower during the treatment of the organic matter, and performing the treatment continuously for a period of 2 hours or more and 70 hours or less.

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