TW426594B - Biodegradable material composition, containers made of which and the preparation - Google Patents

Abstract

This invention relates to a biodegradable material composition, which contains mainly plant materials of rice husks, and biodegradable binder. The container made of the above biodegradable composition will be decomposed by microbes or degraded by sunlight or ultraviolet ray after use and then be reused as soil modifier. The rice husks can mix with rice straw and paper pulp or other plant fibers. The binder contains rosin, dammar, copaiba, gelatin, starch, shellac, calcium carbonate, biodegradable plastics and others. The biodegradable container is produced by: first impregnating sheet-like textile and non-woven sheets with the slurry contains plant fiber powder, shellac, titanium dioxide, biodegradable wax and calcium carbonate; then drying/consolidating the impregnates into sheets; finally laminating at least two sheets of the above consolidate into formality by applying heat and pressure.

Description

-426 594 V. Description of the invention (1) Background of the invention Field of the invention The present invention relates to a method for manufacturing a container made of a biodegradable material made of a biodegradable material composition composed of rice hulls and the like. The technique of the previous case is a container made of rice, etc., which has been discarded in the past. Plant materials and biodegradable substances 'containers made of the biodegradable material' and the biodegradable materials 'are known to be synthesized in foamed styrene based systems' See, for example, JP 8-1 4 3 6 9 5 In addition, the biodegradable molding material disclosed in Japanese Unexamined Patent Application Publication No. 10-3238 10 is composed of 51 to 70% by weight of paper powder and 30 to 49% by weight of a biodegradable aliphatic polyester resin. Disposable tableware, dinner plates, seedlings, and other pots that are high in heat-resistant temperature and sterilized by steam are transplanted one by one in the soil. This biodegradable molding material has water resistance and can be disintegrated and destroyed within a certain period of time when it is discarded after use. In addition, the method for producing a decomposable container disclosed in Japanese Patent Application Laid-Open No. 7-205120 uses stalks and rice husks as basic raw materials, and does not cause environmental pollution due to waste. After drying, it is cut into fibers or pulverized in advance. On the other hand, the water-containing powder is heated and gelatinized. The mixed material formed by mixing the two powders is heated and pressurized with a molding die, and then coated with a plastic film to form a coating layer. Furthermore, 'food trays or boxes used to carry food or displayed on display cases are made of biodegradable non-woven fabrics and discarded after use.

Page 5-4 26 5 94 5. Description of the invention (2) For example, Japanese Patent Application Laid-Open No. 4- 1 89740 □ The food tray is made of cellulose-based natural fiber or cellulose-based recycled or semi-synthetic fabric, or The mixed fibers and the fabric spokes are adhered by a woven interdimensional bonding agent mainly composed of deacetylated fluorene of chitin. Relative to 100 parts by weight of the fiber, the water-repellent agent is 1 on a solid basis. To 2 parts by weight, made of a biodegradable non-woven fabric having a unit area of 200 g / iri or more, and compression molding to an apparent density of 0.2 g / cm3 or more. However, containers that have been discarded when used up have good fluidity during molding and a small amount of non-biodegradable resin materials are added. Therefore, when these containers are disposed of, they will cause environmental pollution. In addition, the disadvantage of the conventional degradable container is that it does not have sufficient mechanical properties such as rigidity, strength, and shape retention during use, and the molded body produced by the method for manufacturing the degradable container can maintain the same characteristics as when the coating layer is provided. Initial shape. In addition, conventionally used disposable containers have insufficient product strength. For example, when used as a food container, liquids or condiments are placed in the food container during transportation. The shape of the container cannot be maintained, and it will swell and have poor shape retention. , The container itself absorbs water, which causes the surface to change color, which causes many problems. In order to strengthen the container, when using a biodegradable material containing a sheet to form a sheet, a non-sheet is coated on top of the sheet, and a sheet is placed on the surface of the non-sheet intermediate formed body to be molded. Sheets and non-sheets cannot be used. Integral molding creates problems in reducing thinning and causes poor productivity. Summary of occurrence The purpose of this occurrence is to solve the above-mentioned problems, and provide a biodegradable material composition, and a container made of the composition, so as to constitute a container.

Page 6: 426594 V. Description of the invention (3) The materials of articles such as '3' can be decomposed by microorganisms in a short time after disposing of the article, or disintegrated by sunlight, ultraviolet rays, etc. = decomposed into Harmless soil, decomposed materials can be used as soil improvement materials, etc. At the same time, mechanical properties such as rigidity, strength and shape retention are excellent when used. Another object that has not occurred is to provide a container made of biodegradable materials and a method for preparing the same. The raw material mixed material is pulverized by plant raw materials and biodegradable materials separately, or added to the raw material mixed materials to decompose the raw materials. Sheet-like woven and / or non-woven fabrics made of sexual materials are converted into materials such as bleaching, sterilization, water resistance, and heat resistance as appropriate. 'Compression molding using heat and pressure makes it easy to make containers. The material does not need to be incinerated. After being disposed of, the container material uses the decomposition of microorganisms in a short period of time, or breaks down into H2O, (: 02, etc. by sunlight, ultraviolet rays, etc., and disintegrates. It can be used as soil improvement materials, etc. At the same time, it can increase the lightness and productivity of the container itself, and has excellent rigidity, strength, shape retention, water resistance, heat resistance and other mechanical properties when used. The present invention relates to rice husks. Ingredients of plant raw material powder, mixed with biodegradable material containing binder Composition of decomposable material. The mixing ratio of the mixed material is 60 to 90% of the plant raw material powder and 10 to 40% of the biodegradable material. Moreover, the aforementioned Langhe material can also be added with water. Biodegradable substances include shellac, rosin 'Dammar resin, Copal resin, gelatin, starch, calcium carbonate

ί 426594 V. Description of the invention (4), biodegradable plastic, or its mixed powder. The binder in the biodegradable substance is composed of shellac, rosin, dammar resin, coba resin, gelatin, starch, or a mixed powder thereof. This biodegradable material composition is compared with the raw materials for the daily use of containers and other items. The price is the same as the market price. When biodegraded and returned to the soil, it is transformed into harmless soil. Therefore, when it is made into a container, it can be used after use. Save incineration, recycling and other procedures, and can be used as soil improvement materials for crops, can provide overall low-cost containers or bottles. An oxidizing preservative and / or a bleaching agent may be mixed with the aforementioned mixing material. In particular, a woven fabric and / or a non-woven fabric made of a biodegradable substance may be mixed with the aforementioned mixing material. The present invention also relates to a container made of a biodegradable material. The biodegradable material composition is used, and the biodegradable material composition is heat-pressed and compression-molded. Furthermore, the present invention also relates to a method for manufacturing a container made of biodegradable materials, comprising the steps of: pulverizing a plant raw material containing rice husks as a main component; and pulverizing a biodegradable raw material powder obtained by comminuting a biodegradable material containing a cumulant. They are uniformly mixed to form a mixed raw material powder. Next, the mixed raw material powder is heated and pressurized, and compression-molded into a container shape. The method for manufacturing a container made of biodegradable material is to heat and press the mixed raw material powder to form an intermediate molded body. Next, on the surface of the intermediate molded body, a woven fabric made of a biodegradable substance and / Or a non-woven fabric is formed into a molded body, and then the molded body is heated and pressurized and compression-molded into a predetermined shape.

5. Description of the invention (5) The method for manufacturing a container made of biodegradable material is a slurry made of the aforementioned mixed raw material powder and applied to a woven and / or non-woven fabric made of a biodegradable material. After being dried, a sheet is formed, and the mixed material is laminated on the sheet to be integrally heated and pressurized to be compression-molded into a predetermined shape. The present invention also relates to a method for manufacturing a container made of biodegradable material, which comprises coating or impregnating a slurry of plant fiber powder material, shellac powder and / or shellac solution and a biodegradable wax at least containing rice husk as a main component. The sheet-like woven and / or non-woven fabric made of decomposable material is dried to form a sheet, and the sheet is then heated and pressurized, and then compression-molded into a container having a predetermined shape. The slurry may be added with inorganic fillers such as titanium oxide and calcium carbonate, slip powder, and / or mica. The shellac powder and / or the shellac solution have at least the functions of a binder and a water-resistant material. The titanium oxide has at least a function of a deodorant and a bleaching fungicide, and the biodegradable wax has at least a function of a water-resistant material, a release material, and a water-repellent material. For example, when the container is used as tableware, adding titanium oxide as a deodorant or bactericide can effectively eliminate the odor of rice husks and the like and sterilize it. The aforementioned compression-molded sheet is composed of one sheet or a plurality of laminated sheets. In the sheet lamination step, a filler containing the aforementioned plant fiber powder material, the aforementioned sheet woven and / or non-woven biodegradable material is appropriately interposed between the sheets, and the heat insulation of the container can be adjusted. , Heat resistance, thickness and strength. For example, when the filler constitutes a porous body, the porous portion forms an air layer, which can greatly improve the heat insulation property =

Page 9 426 594 V. Description of the invention (6) The surface of the container formed by heating and pressing of the sheet is coated with the aforementioned biodegradable wax and silicon coating agent. The aforementioned plant fiber powder material is composed of fine powder pulverized to 50 to 350 mesh. Conditions for compression-molding the sheet by applying heat and pressure are set at, for example, a temperature of 100 to 250. (: The pressure ranges from 30 to 200 kg / cm2, and the molding time ranges from 3 to 60 seconds. The slurry is composed of the plant fiber powder material 40 to 90%, the shellac solution 5 to 40%, and the titanium oxide 1 to 30% 'the aforementioned biodegradable wax 1 to 40%, the aforementioned carbon' calcium acid 1 to 20%, and the balance is water or an organic solvent, which is made by mixing. In the aforementioned plant fiber, the rice husk can be added by selecting from bamboo, Plant fiber materials such as sugarcane, straw 'coconut shells, bagasse, wood chips, kenaf, kenaf, cotton chips, pulp and other plant materials' and raw materials of a mixture of two or more materials. The aforementioned rice husks can be rubbed with dry rice husks to Rice husks separated from brown rice. The aforementioned mud can be selected from the group consisting of coba resin, rosin, distilled tall oil, tall oil fatty acid, terpene polymer, starch, gelatin, casein, dammar resin, gum arabic, and hard green And the binding agent of two or more meeting materials. The step of impregnating the aforementioned slurry with the aforementioned sheet material allows the aforementioned sheet material extracted from the bobbin to pass through the state of being immersed in the aforementioned slurry contained in the tank. This container The legal system will include at least The plant fiber powder material, shellac powder and / or shellac solution 'and the slurry of biodegradable wax as the main components are dried to form a sheet, and then the sheet is heated and pressurized and compressed into a predetermined shape. container.

Page 10 f 4 26 ^ V. Description of the invention (7) The step of manufacturing sheet from mud is to immerse the sieve in the mud installed in the tank, make the mud spread on the sieve, remove the sieve from the tank, and The mud was dried to reach it. The rice husks used here do not need to be washed or dried and disinfected. When the aforementioned mixed materials are heated and formed, they can be fully sterilized, and they will be disposed of in the same manner as ordinary tableware. Furthermore, in terms of strength and use, the thickness of the aforementioned container is preferably 0.5 min or more, and the inclination angle is preferably 15 ° or more, and it can also be formed into a flat shape. The manufacturing method of the container made of the biodegradable material is, for example, applying the slurry made of the mixed material to the woven and / or non-woven fabric, drying it to form a sheet, and stacking the mixed material on the sheet. Compression molding into a predetermined shape. This biodegradable material composition is composed entirely of degradable materials, and in particular, can be made into a product having strength by the action of woven and / or non-woven fabrics. In a very simple manufacturing step, this container is made of rice hull as the main component, reinforced with woven and / or non-woven fabric, and bonded with an adhesive of a biodegradable material. The surface of the container formed by heating and pressing from the sheet was coated with the biodegradable wax and the silicon coating agent. The biodegradable wax may be added with natural waxes such as automatic plant waxes, mineral waxes, petroleum waxes, and a mixture of two or more kinds thereof. This biodegradable wax generally does not have heat resistance to high temperatures, but in order to improve water resistance in the field of container use, it is suitable to be coated on the surface of the container. In the manufacturing method of the container, the step of manufacturing the aforementioned sheet material from the aforementioned mud,

Page 11_ 4 26 5 94 V. Description of the invention (8) The sieve is immersed in the aforementioned slurry installed in the tank, the slurry is diffused on the screen, the screen is taken out of the tank, and the slurry is dried. carry out. The step of impregnating the slurry with the sheet material is achieved by passing the sheet material extracted from the bobbin in a state of being immersed in the mud filled in the tank. The method for manufacturing a container made of biodegradable material is composed of the above. Because shellac (shellac powder and / or shellac solution) has water resistance or heat resistance, and the biodegradable wax has water resistance, it is used as a food container. In this case, the container does not swell, discolor or deteriorate due to absorption of water, so a good container can be provided. In addition, when at least two or more sheets obtained from a slurry made of impregnated biodegradable materials are laminated, a good container can be made to ensure the shape retention and strength of the container. That is, since one or more sheets can be laminated into a container, the strength of the container or the water resistance can be adjusted by adjusting the number of laminated layers according to the purpose of the container. In addition, the biodegradable material can also be sandwiched between the laminated sheets, and the container can be made thick by clamping. Depending on the nature of the material being clamped, the container can have other functions, such as heat insulation and financial properties. In addition, this container can be made by adding bleaching fungicides and deodorizing osmium oxide to improve release, water repellency, fluidity or gloss of biodegradable waxes as biodegradable village materials to improve container characteristics . The manufacturing method of this container is as described above. It is based on the sheet impregnated with a slurry made of biodegradable materials, made into a sheet, or the slurry itself is filtered to form a sheet. The sheet is compressed and molded by heating and pressing. It is made into a container, so compared with the conventional article, it can increase the strength, achieve the lightness and thinness of the container, and because the container has the convenience of handling, the productivity improvement effect can be obtained. Page 12-426594 V. Description of the invention (9) This container can be used as a tableware, dinner plate, planting bowl, utensils containing various materials, etc. After being used as a food container, when the container itself is placed or discarded, the material constituting the container itself It will be decomposed by microorganisms and exposed to sunlight, especially the ultraviolet rays disintegrate and return to the soil, that is, it will be converted into harmless soil, water, or carbon dioxide, so there is no need to incinerate and recycle the container, which can save processing costs, and the biologically decomposed soil can be used. Soil improvement agent for crops. Containers made according to this manufacturing method have the same price as the market price and have the above functions, so they can provide extremely low-cost containers as a whole. Brief description of the drawings. Figure 1 is a block diagram of a container manufacturing process in a method for manufacturing a container made of a biodegradable material according to the present invention; Figure 2 is a schematic explanatory diagram of a manufacturing apparatus used in a method for manufacturing a container made of a biodegradable material according to the present invention; The figure is a block diagram of another embodiment of the container manufacturing steps in the method for manufacturing a container made of biodegradable materials according to the present invention. FIG. 4 is a description of the manufacturing steps of the container made of woven and / or non-woven fabric in the method for manufacturing a container made of biodegradable materials according to the present invention. FIG. 5 is a schematic explanatory diagram of an embodiment in which a controller is provided in the manufacturing apparatus of FIG. 2, and FIG. 6 is a block diagram of a second embodiment of a container manufacturing step in a method for manufacturing a container made of a biodegradable material according to the present invention; FIG. 8 is a block diagram of another embodiment of a container manufacturing step in a method for manufacturing a container made of biodegradable materials according to the present invention; FIG. 8 is a chart for a method used for manufacturing a container made of biodegradable materials according to the present invention

ll ^ |-I Page 13 V. Brief description of the embodiment of the manufacturing device: Figure 9 is a schematic illustration of the embodiment of the heating and pressurizing device in the manufacturing device of the method for manufacturing a container made of a biodegradable material according to the present invention. Figure 10 is a schematic illustration of a manufacturing method of different materials used in the method for manufacturing a container made of biodegradable materials according to the present invention; Figure 11 is a schematic illustration of the manufacturing steps of another embodiment of a method for manufacturing a container made of biodegradable materials according to the present invention; . Detailed description of specific examples The examples of the biodegradable material composition of the present invention and the containers formed from the composition are described below with reference to the examples. The biodegradable material composition of the present invention is firstly used in tableware, containers, packing boxes, cans, bags, and can also be used as a container for plant cultivation, such as planting pots, flower pots, etc. It is a plant raw material powder mainly composed of rice husks. 60 To 90%, and 10 to 40% of the biodegradable substance containing the binder is mixed to obtain a mixed material, which is composed of a mixed material made by adding water to the raw material. The main raw material constituting the biodegradable material composition disintegrates due to the decomposition of microorganisms, sunlight, ultraviolet rays, etc., and is converted into harmless soil, which can be used as a soil improvement material. Plant materials can be added to the rice husk with materials selected from bamboo, sugarcane, straw, pulp, and two or more kinds of mixed plant fiber materials. That is, the plant raw material can be simply composed of rice husks, and plant fibers such as straw and pulp can also be mixed with rice husks. Biodegradable substances can be rosin, dammar (natural resin), coba (natural resin), gelatin, starch, shellac, biodegradable plastic, calcium carbonate, or their mixed powders, among which rosin, dammar, coba ,gelatin,

Page 14 5 'Explanation of the invention (11) Temple powder, insect migration, with the function of an adhesive. In addition, mixed materials composed of plant materials and biodegradable materials can also be mixed with oxidative preservatives and / or bleaching agents. Rice husks can be rolled through dried rice, and rice husks separated from brown rice can save additional drying treatments. Rice husks are bulking agents that make up containers and other items. They are biodegradable. To reduce costs, the content can be as high as 60 to 90%, preferably 65 to 85%. The carbonic acid contained in the biodegradable material composition has natural disintegrability, which can reduce the cost, and at the same time improve the heat resistance and hardness of the container. However, the flowability during molding is poor. Therefore, the amount of addition must be adjusted depending on the product and is unlimited. degree. The biodegradable plastic constituting the biodegradable material composition is composed of a biodegradable aliphatic polyacetate, a biodegradable aliphatic polymystery, and the like, for example, a polyhydric alcohol such as 1,4-butanediol and succinic acid 'Dicarboxylic acids such as adipic acid, aliphatic polyesters obtained by polycondensation reaction. Shellac is a kind of natural resin, which has the characteristics of thermosetting, can disintegrate naturally and biodegradable at the same time. It is used as a powder, and can be mixed with plant raw materials uniformly. Shellac is soluble in alcohol and can be hot melted. It can be used as liquid solution (25 to 50%) or aqueous solution (25%). The rosin-based natural resin used as a binder has natural disintegrability, but has low axial cohesion and heat resistance. This must be considered to adjust the amount of addition. Gelatin is an animal protein that has biodegradability, but has low adhesion and heat resistance. You must consider this point to adjust the amount of gelatin. Dianfen has biodegradability and can be obtained at a low cost, but its cohesive force and heat resistance are low. This must be considered to adjust the amount of addition.

Page 15 426 534 V. Description of the invention (12) Regarding the new biodegradable material, in the first embodiment, the mixing ratio of the "plant material and the biodegradable material" is 80% of the shell of the plant material, Β in the second embodiment, which is composed of 20% of starch of biodegradable material and biodegradable material. The mixing ratio of plant material and biodegradable material is 70% of rice husk of plant material, biodegradable material & 2. % And carbonated fishing 10%. In the third embodiment, the mixing ratio of the plant material and the biodegradable material is composed of 80% of rice husk of the plant material and 20% of shellac of the biodegradable material. In the fourth embodiment, the mixing ratio of the plant material and the biodegradable material is composed of 85% of rice husk of the plant material, 5% of shellac of biodegradable material, and 10% of calcium carbonate and other materials. The shellac used here is a shellac solution dissolved in alcohol, which can be used to coat the surface of the rice husk shaped body. In the fifth embodiment, the mixing ratio of plant material and biodegradable material is composed of 80% of rice husk of plant material and 20% of rosin of biodegradable material. In the sixth embodiment, the mixing ratio of the plant material and the biodegradable material is composed of 80% of rice husk of the plant material and 20% of gelatin of the biodegradable material. Furthermore, in the seventh embodiment, "the current ratio of the plant material to the biodegradable material is 70% of the rice husk of the plant material" and 20% of the aliphatic polymer of the biodegradable material. The composition is composed of osmium carbonate 3 10%. Second, referring to Fig. 1 and Fig. 2, the Japanese name is renamed to 丄 女 to explain one embodiment of the method for manufacturing a container of the biodegradable material of the present invention. The container 1 made by this method was originally used as a tableware, container and sentence container for plant cultivation. It was mainly made of the above biodegradable material composition. Structure; container; box, can, bag, etc., can also be used as a spider's flower pot, etc.

Page 16 426594 ---------------------- V. Description of the invention (13) The main material 'is the use of the decomposition of microorganisms, or collapse by sunlight, ultraviolet rays, etc. Decompose and transform into harmless soil. The method for manufacturing container 1 includes the steps of 'plant material powder obtained by pulverizing plant material containing rice husk as a main component' and biodegradable material powder obtained by pulverizing a biodegradable material containing a binder, and uniformly mixing them to obtain a mixed material powder. Then, the mixed raw material powder is pressurized by a press, and then shaped into a trough. First, select a plant material containing rice husks (step j0) 'pulverize the selected plant material to a 50 to 300 mesh (step 骅) with a pulverizer or the like to prepare a plant material · powder (step 12) ). On the other hand, a binder-containing degradable material is selected (step 13), and the selected biodegradable material is crushed to a mesh of 50 to 300 (step 14) to prepare a biodegradable raw material powder. (Steps 1 5). Secondly, the plant raw material powder and the biodegradable raw material powder were uniformly mixed according to Step 16 and the mixed raw material powder to prepare a mixed raw material powder (step control includes that at this time, the mixed raw material powder is maintained in terms of container shape. The mixing ratio of 60 to 90% of the raw material and 10 to 40% of the biodegradable material can be mixed, and it is better to mix the ratio of 65 to 85% of the plant raw material and 15 to 35 of the biodegradable material. When the raw material powder is heated and pressurized by the molding device for compression molding, the water is used: when the raw material powder is mixed, a predetermined amount of ^ is added to the 'despise selection of raw materials'. At this time, of course, there are also materials that do not need to be added. Ϊ 成! The raw material powder is mixed, using a predetermined molding device such as the second figure, the lower device is filled between the upper mold 2 and the lower mold 3, and the heater 4 provided on the upper mold 2 and the mold 4 is energized. Operate the press 5 at the same time, apply the load p, and mix the

426594 V. Description of the invention (14) The raw material powder is heated and pressed, and compression-molded (step 17). At this time, the compression molding conditions of the molding device should be set at a molding temperature of 100 to 200 ° C, a molding pressure of 20 to 80 kg / cm 2 and a molding time in a range of 3 to 30 seconds. The thickness of the container 1 formed by the compression molding of the mixed raw material powder can be variously set, and the molding thickness is preferably 0.5 mni or more, which is advantageous for the mechanical properties such as the strength and shape retention of the container I (step 18). The container 1 can be made into a flat plate shape, and when used as tableware, its inclination angle is shaped, for example, 15 ° or more, which is preferable in terms of strength and practicality. The raw materials of the plant 1 and the biodegradable material containing the drilling agent are the same as those of the above composition. Plant husks and other plant materials are used here as an extender for container 1. It has biodegradability. In order to reduce costs, the content should be as high as 60 to 90%, and preferably 65 to 85%. Specific examples of the raw materials used in the method for manufacturing the container 1 can be listed in the first to seventh embodiments of the above-mentioned biodegradable material composition. Next, referring to Figs. 3 to 5, the biodegradable material composition of the present invention, the container made of the biodegradable material made of the composition, and other examples of the manufacturing method will be described. The biodegradable material composition of this embodiment includes a plant raw material powder obtained by crushing a plant raw material mainly composed of rice husks, a binder composed of a biodegradable substance, and a woven fabric and / or a biodegradable substance. Not woven. As the binder of the biodegradable substance, the same substances as in the above embodiments can be used. The container 1 of this embodiment is composed of the above-mentioned biodegradable material

Page 426 594

物 制。 Made of. The woven fabric made of plants, such as rosin, which has a reduced capacity, can reach containers and cans. And / or non-woven fabrics to increase the strength 'even with thick composition, the full strength of the fly I ί device, so can reduce the use of rice hulls and other light materials I material itself, and reduce the weight of the container, Ears are first used for tableware, containers, and packaging clothes. Biodegradable material production method Λ t ^ .... χ 何 He needle splitter manufacturing method, based on rice hull main component 21, the obtained plant raw material powder, added biodegradable material mouth formed mixed material 7. Add a biodegradable substance and / or non-woven fabric 8 to make a material, and press the material into a shape to form a container. The container 1 is, for example, a woven fabric and / or a non-woven fabric 8 as shown in FIG. 4 (A), and the slurry composed of the mixed material 7 is applied as shown in FIG. 4 (B), and then pressure-molded and dried to form a sheet.材 9。 Material 9. Next, as shown in Fig. 4 (C), the mixed material 7 is laminated on the sheet 9 and heated and waste-molded to form a predetermined shape to form a container 1 shown in Fig. 4 (D). The manufacturing method of the container 1 includes: pulverizing plant material powder obtained by pulverizing plant raw materials with rice husk as the main component, 60 to 90% of the raw material powder, and mixing the biodegradable material with a binder of 10 to 40%; The mixed material 7 is composed of water, and the mixed material 7 is mixed with water to form mud. The main materials constituting the container 1 are disintegrated by microorganisms, or disintegrated by sunlight, ultraviolet rays, etc., and are converted into harmless soil, radon 20, and C02. The plant raw material powder and the compression molding conditions under heat and pressure in this embodiment are the same as those in the above embodiment.

426 594

Next, referring to 3), the manufacturing steps of the container 1 will be described. 2. The production method includes the steps of: 'Hawthorn raw material consisting of rice husks is made into plant raw material powder and crushed material decomposed raw material powder obtained from binder powder of biodegradable substances' are uniformly mixed to obtain a mixed raw material powder. The raw material pressing device heats and presses the mixed raw material powder, and compresses it into a container. First, prepare a plant raw material containing rice husks (step 20), and pulverize the prepared plant raw material into 50 with a pulverizer or the like. ~ 300 mesh (step 21) to make plant material powder (step 22). On the other hand, a biodegradable substance adhesive is prepared (step 23), and the prepared biodegradable substance is pulverized into a mesh of 50 to 300 mesh by a pulverizer or the like (step 24) to prepare a biodegradable raw material powder (step 25). ) 〇 Second, the plant raw material powder and the biodegradable binder are mixed at a predetermined ratio, and mixed evenly with a mixer or the like to prepare a mixed material 7 (step 2 6). At this time, the "mixing ratio of the plant material powder of rice husk to the raw material powder of the binder" in the mixed material of the raw material powder is preferably 60 to 90% of the plant raw material and 10 to 10 of the binder from the viewpoint of shape maintenance. It is preferably composed of 40%, and is preferably composed of 65 to 85% of a plant material and 15 to 35% of a binder. In this method, when the mixed raw material powder is heated and pressurized for compression molding, a predetermined amount of water is added to the raw materials that can be selected depending on the production of the mixed raw material powder to form mud purple. At this time, of course, depending on the water content of the selected material, it is not necessary to add. On the other hand, a woven and / or laminated nonwoven 8 made of a biodegradable substance is prepared (step 27), and the woven and / or laminated nonwoven 8 is disposed as shown in FIG. 4 (A).下 膜 3。 Under film 3. As shown in Figure 4 (B),

'426594 V. Description of the invention (17) The woven and / or laminated nonwoven 8 is coated with the slurry of the mixed material 7 uniformly, and then the pressing device is operated on the woven and / or laminated nonwoven 8 coated with the mixed material 7 5. A load p is applied to the upper mold 2 and press-molded by pressurization. 'The press-molded sheet 9 is dried and shaped (step 28). Next, the dry sheet 9 is laminated with a mixed material 7 composed of plant materials and rosin, and this is arranged on the lower mold 3, and the heaters provided on the upper mold 2 and the lower mold 3 are energized, and the pressing device 5 is operated at the same time. A load p is applied to the upper mold 2 and heated and press-molded (step 29) to form a container made of a biodegradable material. When the rosin of a biodegradable material is used as a mixture, the heat resistance of the rosin is low. To extend the molding time, the controller 6 is used to control the pressing time and the molding temperature. The molding temperature is controlled by the controller 6 ', for example, the heating temperature of the upper mold 2 of the metal mold is set to 160 to 170 ° C, and the heating temperature of the lower mold 3 is set to 150 to 160C. In this embodiment, although the upper mold 2 is set to a temperature higher than the lower mold 3 ', when the mixed material 7 is heated and pressurized, there is a phenomenon that a molded product remains at a low temperature. Therefore, in this embodiment, the molded product remains于 下 模 3。 Under the mold 3. When the temperature of the upper mold 2 and the lower mold 3 is set to below 50 ° C, the husk grains react slowly with rosin 'causing the phenomenon of prolonged molding time'. At the same time, the stagnancy of the rice husk deteriorates, and the molded product may be damaged. Become defective. And the temperature of upper mold 2 and lower mold 3 is set at! If it is more than 70 t, the molding time is slightly prolonged, and coking of the molded product may occur. Therefore, when the molding time is about 30 seconds, the molding temperature is preferably about 150 to 170 t. In addition, the molding pressure is preferably about 10 to 80 kg / cm2 in relation to the molding temperature or molding time of the metal molding. In addition, the mixed material 1 has a thickness of 0, 5 mm or more, which is good for container 1 because of the 426 594 V. Description of the invention (18) '= the thickness of the container 1 formed by compression molding. Mechanical properties such as strength and shape retention. n ^ 'Plant raw materials such as rice husks are used as the bulking agent for the container.' The same materials as the group = can be used, and the biodegradation reduction amount should be 60 ~ 90%, and 65 ~ 85% is preferred. FIG. 22 illustrates another embodiment of the manufacturing process of the container made of biodegradable materials with reference to FIG. 6. Therefore, the description is in the embodiment: 9 steps, the manufacturing steps up to 26 are the same. Decomposable shaft mixture ::. In step 26, the plant raw material powder and the bio-derived mixed material • bucket, paper Ξr are mixed in a certain proportion, and mixed with a mixer or the like. On the other hand, the second car ... press molding is used to make an intermediate molded body (step 31), and the non-woven fabric is prepared in step 3 with a woven fabric and / or a laminated body made of a biodegradable material disposed in the lower mold 3b). Here, for example, as shown in FIG. 5 ′, a non-woven fabric formed in the middle is made / arranged with a woven fabric and / or a laminator 4 on the middle formed body, which is the same as B # \ formed body. Next, for the non-woven fabrics heated or laminated in the upper mold 2 and the lower mold 3: a pressurizing device 5 'a material shape and a woven fabric and / or made into a biodegradable keel load P, which is heated and press-molded (step 33). The container 1 is made of decomposed material (step 34). The material drawing to FIG. 10 illustrate the bio-degradable material of the present invention. The preparation method of the rice husk material composition is not prepared as shown in the seventh circle, and the plant fiber powder material obtained by crushing the water-resistant village material, the binder, the insect migration powder as the material and the heat-resistant material, and / or

426594------------------- V. Description of the invention (19) and biodegradable wax for improving water resistance (steps 41 to 43). Mud 1 4 (step 4 6). In this case, a deodorant, a white sterilized titanium oxide ', and an extender calcium carbonate may be added to the slurry 14 (steps 44 and 45). On the other hand, a sheet made of a biodegradable material and / or a non-woven sheet is prepared (step 47), and the sheet is coated with the slurry 14 by dip coating or spray coating (step 48), and is prepared in The sheet is impregnated with the sheet 11 of the slurry 14 of the biodegradable material (step 49). Next, the sheet 11 is dried (step 50). The dried sheet 11 is laminated in one or two or more sheets (step 51). Next, the laminated sheet 11 is heat-pressed into a predetermined shape (step 52), and a predetermined biodegradable material container 18 is formed (step 53). In the step of laminating sheet 11, as shown in FIG. 10 (C), filler 19 is appropriately interposed between sheets 11, and the heat insulation, heat resistance, thickness and strength of container 18 can be adjusted. The filler 19 can be made of, for example, a biodegradable material such as a hawthorn fiber powder material, a sheet-like woven fabric and / or a non-woven fabric, or a mineral raw material such as calcium carbonate, calcium hydroxide, calcium oxide, titanium oxide, and mica powder. The compression molding conditions for the heating and pressing of the sheet 11 vary depending on the material mixing ratio or the material moisture content. For example, the heating temperature can be set to t, the pressure can be set to 30 to 20 kg / cm2, and the molding time can range from 3 to 60 seconds. It can be set to be the same as the above embodiment. Based on the mixing ratio of these raw materials, the slurry 14 is composed of 40 to 90% of plant fiber powder material and 5 to 40% of the binder of shellac solution. 1. Biodegradable wax 1 ~ 40%, calcium carbonate, the rest is water, and it is made by mixing. Plant fiber powder material is made from fine powder crushed to 50-35 mesh.

-4 26 5 9 4 V. Description of Invention (20) Composition. Rice husks can be crumbs, cotton, and foreign materials. These plants can also be thicker shellac, which can add fatty acids, agglomerate, harden green, and form a sheet device to dissolve fibers, resins, and silk. It is also possible to add boiling materials that are resistant to plants and minerals. It can be used for all the above things. Better in containers. And expected. Coconut husk, bagasse, and wood are added and selected from bamboo, linen, paper feed, sugar cane, straw, coconut husk, mat / danwu village material it ί plant material, ⑨ two or more kinds of mixed pulverized and crushed into powder as Good, depending on the purpose of the container 18, plus materials selected from the group consisting of compounds, rosin, distilled tall oil, tall oil ^ the second powder, gelatin, casein, dammar, gum arabic, etc. 4 or more mixtures and other materials As a binder. The woven fabric and / or non-woven fabric are made of, for example, water-sprayed cotton, wood wool, linen, ramie, bio-based or natural materials, or carbon fiber, glass fiber, etc. Deodorant or bleaching bactericide "The biodegradable wax used can be added, for example, natural waxes, petroleum wax and other natural waxes, and mixtures of two or more of them. Knife-dissolving waxes generally have low heat resistance, for example, they can melt when they reach 10 ℃. When coating on the surface of the container 18, it is necessary to consider that when the surface of the container 1 is coated with biodegradable soil, a silicon coating is used to add mud and / or mica and other inorganic substances to the mud. The η impregnation step, as shown in FIG. 8, is performed by passing the sheet η pulled out from the bobbin 12 of the winding sheet U in a state of being immersed in the slurry μ contained in the tank 13. In addition, the sheet 11 'immersed in the mud in the tank 13 is sent out by a sharp roller 16 and sent to a dry 15 provided with a heater 27. In addition, a squeegee 20 or the like may be provided near the front or the like of the conveying roller 16 to adjust the thickness of the sheet 11. The sheet U can be impregnated by passing through the dryer 15

426594 V. Description of the invention (21) The slurry 14 of the sheet 11 is dried and shaped. The sheet 11 impregnated with the slurry 14 is, for example, dried in a dryer 3 at about 100 ° C for 1 to 2 hours. As shown in FIG. 9, the dried sheet 11 uses a heating molding press 17 having a heater 24 constituted by an upper mold 21 and a lower mold 22, and a controller 26 is used to control the temperature of the heater 24 or the pressure device 25. Apply pressure to control conditions such as 100 ~ 250 ° C, 30 ~ 200kg / cm2, and 3 ~ 60 seconds. The press repeats the molding process 1 ~ 3 times, and then trims the container 18 of the molded body, etc. 18 is now complete. At this time, the sheet n remaining after the shaper 18 is taken out can be discarded or taken up in a bobbin. When the container 18 is manufactured, the sheet 11 is not laminated. As shown in FIG. 10 (person), the sheet 11 is heated and press-molded to form the container 18. In addition, in the method for manufacturing a container made of biodegradable materials, as shown in FIG. 10 (a), the container 18 used for applications requiring strength and the like is used to heat at least two or more sheets 11 (the sheet 11 shown as a layer is heated) The pressure molding has a predetermined shape: shape 2: benefit 18. The number of months of laminated sheets varies depending on the type of container 18. For example, five sheets can be laminated. In the production method of this device, heat resistance, Insulation: wait for the solution of the Λ material / capacity picture (c), and use the material / material with this function to make the second device at 18 o'clock and 11 sheets can be used to fill the laminated sheets ^ Configured in '

type. In addition, the filler 19 is made of a fibrous material and formed into a porous two-tube heating and pressure hole: the air forms a heat insulation layer, and λ is to increase the barrier, 'is present in the multi-body, etc., when placed inside the container 18, the outside of the container 18; t . For example, the hydrothermal device 18 can be used for tableware, for example: it is easy to handle. Two :: Planting spiders, flowerpots and other plants and planting 1§18 in the village will be due to microorganisms 玷 厶 iridium in this field. Each 5. Description of the invention (22) 11 Figures illustrate the container made of biodegradable materials of the present invention 0 Yes Instead of using a moon-shaped woven fabric and / or a non-woven fabric, the method is to make the mud paddle itself into a sheet shape to form a sheet-decomposable material scientific container, which is mainly composed of plant fiber powder material and shellac. The powder and the biodegradable mud 14 of the butterfly are dried, and the sheet is heat-pressed into a container having a predetermined shape. For example, as shown in FIG. 11, the manufacturing steps of this container are immersed (step Η) and the small sieve 31 into the slurry), and the sieve 31 is shaken so that a part of the slurry 14 is on the sieve 31 (step J ). Take out the sieve 31 and put the sieve 3 into the mud i 4 piece 30 (step K). From the set on the sieve 31 (step L), the sieve 31 is inverted and the sheet 30 is dried to make the sheet η. The sheet material 30 is a 10th type container 18. As shown in FIG. 10 (C), the sheet 30 can be dried to obtain the tablet 18. The product 1 step is a method in which a filler 19 containing at least a plant fiber decomposable material is appropriately interposed in the heat insulation, heat resistance, thickness and strength of the sheet 11 1 8. Disintegration 'turns into harmless soil, HW'CO2', or returns to pain in nature. Next, reference is made to other embodiments of the manufacturing method. The manufacturing method of this embodiment is, for example, the same method as paper making. That is, this organism contains less rice husks and / or shellac solution, and 30, and then the sheet 30 plus the biodegradable material slurry 14 is filled into the tank 13 in the tank 13 (diffusion in step I) The state of movement is in the shape of a sheet, and the finished material 30 is filtered and detached from the sieve 31. The same method shown in the sheet diagram is used to form this example. The material 11 is laminated to make a biological compartment containing powder material. Conditioning container No. 26, p. 426594 Brief description of the drawing Figure 1 is a block diagram of the container manufacturing steps in the method for manufacturing a container made of biodegradable materials according to the present invention; 'Figure 2 is the manufacturing method used in the method for manufacturing a container made of biodegradable materials according to the present invention A schematic illustration of the device; FIG. 3 is a block diagram of another embodiment of a container manufacturing step in a method for manufacturing a container made of a biodegradable material according to the present invention; and FIG. 4 is a woven fabric and / or in the method for manufacturing a container made of a biodegradable material according to the present invention. An explanatory diagram of the manufacturing steps of a container made of a non-woven fabric; FIG. 5 is a schematic explanatory diagram of an embodiment in which a manufacturing device is provided with a controller in FIG. 2; and FIG. 6 is a container manufacturing step in a method for manufacturing a container made of a biodegradable material according to the present invention. Block diagram of the next embodiment; FIG. 7 is a block diagram of another embodiment of a container manufacturing step in a method for manufacturing a container made of a biodegradable material according to the present invention; and FIG. 8 is an implementation of a manufacturing apparatus used for a method for manufacturing a container made of a biodegradable material according to the present invention Example is a schematic illustration; FIG. 9 is a schematic illustration of a heating and pressurizing device in a manufacturing method of a biodegradable material container manufacturing method according to the present invention; and FIG. 10 is a different material used in a method of manufacturing a biodegradable material container according to the present invention FIG. 11 is a schematic explanatory diagram of an embodiment of a manufacturing process of the present invention; FIG. 11 is an explanatory diagram of a manufacturing process of another embodiment of a method for manufacturing a container made of a biodegradable material according to the present invention.

Page 27

Claims (1)

^ " 426 59 4 VI. Scope of patent application 1. A biodegradable material composition, which is a mixed material made of rice husk-based plant raw material powder and a biodegradable material containing a binder Constructor. 2. For example, the biodegradable material composition of the scope of application for the patent, wherein the mixing ratio of the mixed material is 60 ~ 90% of the plant raw material powder and 10 ~ 40% of the biodegradable material. 3. If the biodegradable material composition of item 1 of the patent application scope, wherein the mixed material is watered. 4. The biodegradable material composition according to item 1 of the patent application scope, wherein the plant raw material is a rice husk mixed with plant fiber selected from bamboo, sugarcane, straw, pulp, and two or more mixed raw materials. 5. If the biodegradable material composition of item 1 of the patent application scope, wherein the biodegradable material is made of rosin, dammar resin, coba resin, gelatin, starch, shellac, calcium carbonate, biodegradable plastic, Or its mixed powder. 6. The biodegradable material composition according to item 1 of the application, wherein the binder in the biodegradable material is made of rosin, dammar resin, coba resin, gelatin, starch, shellac, or It consists of mixed powder. 7. The biodegradable material composition according to item 1 of the patent application scope, wherein an oxidation preservative and / or a bleaching agent is mixed with the mixed material. 8. The biodegradable material composition according to item 1 of the application, wherein the rice husk is a rice husk separated from brown rice by drying rice with indica. 9. If the biodegradable material composition of item 1 of the patent application scope, Page 28 4 26 59 4 VI. Scope of patent application Where woven and / or non-woven fabrics made of biodegradable substances are mixed with the mixed material. 1 0. A container made of a biodegradable material, which is formed by heating and pressing the biodegradable material composition in the range of claims 1 to 9 of the patent application. 11. A method for manufacturing a container made of a biodegradable material, comprising the steps of: pulverizing a plant raw material powder obtained from a rice husk as a main component; and pulverizing a biodegradable raw material powder obtained by pulverizing a biodegradable material containing a binder; Those who mix to make a mixed raw material powder, and then heat and press the mixed raw material powder to compression-mold into a container shape. 1 2. The method for manufacturing a container made of a biodegradable material according to item 11 of the scope of patent application, wherein water is added to the mixed raw material powder. 1 3. The method for manufacturing a container made of a biodegradable material according to item 11 of the scope of patent application, wherein the plant raw material powder and the biodegradable raw material powder are pulverized to a fine powder of 50 to 300 mesh. 1 4. The method for manufacturing a container made of biodegradable materials according to item 11 of the scope of the patent application, wherein the compression molding conditions of the mixed raw material powder are temperature 100 to 2 0 0 ° C, pressure 20 to 80 kg / cm2, and molding time. Those with a range of 3 to 40 seconds. 1 5. The method for manufacturing a container made of a biodegradable material according to item 11 of the scope of the patent application, wherein the thickness of the container formed by the compression molding of the mixed raw material powder is more than 0.5 μm. 16. For the method for manufacturing a container made of biodegradable materials according to item 11 of the scope of patent application, the inclination angle of the container formed by compression molding of the mixed raw material powder is more than 15 °. 17. For example, the scope of application for patent No. 11 for the manufacture of containers made of biodegradable materials 426594 6. The method of applying for patent scope, wherein the mixed raw material powder is 60 ~ 90% of the plant raw materials and the biodegradable material is 10 ~ 40% mixed winner. 1 8. The method for manufacturing a container made of biodegradable materials according to item 11 of the scope of the patent application, wherein the plant material is a plant made of rice husk mixed with bamboo, sugarcane, straw, pulp, and two or more mixed materials Fiber. 19. If the method for manufacturing a container made of biodegradable materials according to item 11 of the patent application, the biodegradable substance is made of rosin, dammar resin, coba resin, gelatin, starch, shellac, calcium carbonate, and biodegradability. Plastics, or their mixed powders. 20. For the method for manufacturing containers made of biodegradable materials under the scope of application for patent No. 11, wherein the cumulant in the biodegradable substances is made of rosin, dammar resin, coba Resin, gelatin, starch, shellac, or mixed powders. 2 1. The method for manufacturing a container made of a biodegradable material according to item 11 of the scope of patent application, wherein an oxidizing preservative and / or a bleaching agent is mixed with the mixed raw material powder. 2 2. The method for manufacturing a container made of a biodegradable material according to item 11 of the patent application scope, wherein the rice husk is a rice husk separated from brown rice by rolling dried rice. 2 3. The method for manufacturing a container made of a biodegradable material according to item 11 of the scope of the patent application includes heating and pressing the mixed raw material powder to form an intermediate molded body, and then disposing a biodegradable substance on the surface of the intermediate molded body. The finished woven fabric and / or non-woven fabric are formed into a molded body, and the molded body is then heated and pressurized to be compression-molded into a predetermined shape. Page 30 426594 VI. Application for Patent Scope 24. The method for manufacturing a container made of biodegradable materials such as the scope of patent application No. 11 includes applying a slurry made of the mixed raw material powder to a woven fabric made of a biodegradable material. And / or non-woven fabric, dried and made into a sheet, and the mixed material is laminated on the sheet, and is integrally heated and pressurized to be compression-molded into a predetermined shape. 2 5. —A method for manufacturing a container made of biodegradable materials, comprising applying a plant fiber powder material containing at least rice husk as a main component, shellac powder and / or shellac solution, and a slurry of biodegradable wax, using a coating Or it is impregnated with a sheet-like woven fabric and / or a non-woven fabric made by being impregnated with a biodegradable substance, and then dried to form a sheet, and then the sheet is heated and pressed to be compression-molded into a container having a predetermined shape. 2 6. The method for manufacturing a container made of biodegradable materials according to item 25 of the scope of patent application, wherein an inorganic filler such as titanium halide and calcium carbonate is added to the slurry. 2 7. The method for manufacturing a container made of biodegradable materials according to item 26 of the patent application, wherein the shellac powder and / or shellac solution has at least the function of a binder and a water-resistant material, and the titanium oxide has at least deodorization. And bleaching fungicide, and the biodegradable wax has at least the functions of water-resistant materials, release materials and water-repellent materials. 2 8. The method for manufacturing a container made of a biodegradable material according to item 25 of the scope of the patent application, wherein the compression-molded sheet is composed of one sheet or a plurality of laminated sheets. 2 9. The method for manufacturing a container made of biodegradable material according to item 28 of the scope of the patent application, wherein the step of laminating the sheet is to contain the biodegradability of the plant fiber powder material, the sheet-like woven fabric and / or non-woven fabric. Filler of material, Page 31 ^ " 426 5 94 6. Scope of patent application Those that are moderately placed between the sheets to adjust the heat insulation, heat resistance, thickness and strength of the container. 30. The method for manufacturing a container made of a biodegradable material according to item 25 of the scope of the patent application, wherein the surface of the container formed by heating and pressure molding of the sheet is coated with the biodegradable wax and a silicon coating agent. 31. The method for manufacturing a container made of a biodegradable material according to item 25 of the application, wherein the plant fiber powder material is composed of a fine powder pulverized to a mesh of 50 to 350 mesh. 3 2. According to the method for manufacturing a container made of biodegradable materials according to item 25 of the scope of the patent application, the heating and pressing molding conditions of the sheet are: temperature 100 ~ 250 ° C, pressure 30 ~ 200 kg / cm2, molding Time within the range of 3 to 60 seconds β 33. For example, the method for manufacturing a container made of biodegradable materials in the scope of application for patent No. 25, wherein the slurry is made from the plant fiber powder material 40 ~ 90%, and the shellac solution 5 ~ 40 %, The titanium oxide 1 to 30%, the biodegradable wax 1 to 40%, the calcium carbonate 1 to 20%, and the balance is water or an organic solvent, which are prepared by mixing. 3 4. The method for manufacturing a container made of biodegradable materials according to item 25 of the scope of patent application, wherein the rice husk is added with a plant material selected from the group consisting of bamboo, sugar cane, straw, coconut husk, bagasse, wood chips, kenaf, cotton wool, and pulp. , And two or more mixed materials. 3 5. The method for manufacturing a container made of biodegradable materials according to item 15 of the scope of patent application, wherein the mud is added with a material selected from the group consisting of Cobar resin, rosin, distilled tall oil, tall oil fatty acid, terpene polymer, starch, Gelatin, casein, dammar resin, gum arabic, hard asphalt, and the bonding of two or more mixed materials Page 32 4265 ^ 4 VI. Patent applicants. 36. The method for manufacturing a container made of a biodegradable material according to item 25 of the patent application, wherein a zeolite and / or activated carbon deodorant fungicide is added to the mud. 37. For example, the method for manufacturing a container made of biodegradable materials according to the scope of application for patent No. 25, wherein the biodegradable wax is added with natural waxes such as automatic vegetable wax, mineral wax, paraffin wax, and two or more kinds of mixed materials. 3 8. The method for manufacturing a container made of biodegradable materials according to item 25 of the scope of patent application, wherein an inorganic filler such as slip powder and / or mica is added to the slurry. 3 9. According to the method for manufacturing a container made of biodegradable materials according to item 25 of the scope of the patent application, wherein the step of impregnating the sheet with the slurry is to make the sheet withdrawn from the bobbin to immerse the slurry in the tank. Those who pass the state. 4 0. A method for manufacturing a container made of biodegradable material, comprising drying plant fiber powder material containing at least rice husk as a main component, shellac powder and / or shellac solution, and slurry of biodegradable wax, and drying the same Those who make a sheet, and then heat and press the sheet and compressively mold it into a container having a predetermined shape. 41. The method for manufacturing a container made of a biodegradable material according to item 40 of the scope of the patent application, wherein the step of laminating the sheet is to appropriately place a filler of the biodegradable material containing at least the plant fiber powder material between the sheet material In order to adjust the thermal insulation, heat resistance, thickness and strength of the container. 4 2. The method for manufacturing a container made of biodegradable material according to item 40 of the scope of patent application, wherein the step of manufacturing the sheet from the slurry is to immerse the sieve into the slurry contained in the tank, so that the slurry spreads on the sieve , Take out the sieve from the tank, and dry the slurry to achieve it. Page 33