KR101933573B1 - Method for manufacturing a human-friendly functional panels using biopolymers - Google Patents

Abstract

The present invention relates to a method for manufacturing human-friendly and functional plate materials using biopolymer which adjusts the weight of initially injected biomass, a thermal compression temperature, and time in the thermal compression processing step to manufacture insulating/sound absorption materials for low density or functional plate materials having medium/high density, and is eco-friendly and harmless to human. The method for manufacturing functional plate materials using wasted or unused biomass resources and mushroom mycelia, which is a biopolymer, comprises: a sterilized biomass obtaining step which collects and sterilizes biomass to obtain the sterilized biomass; a step which cultures biopolymer spores based on basidiomycete on a sterilized PDA medium; a step which manufactures a liquid biopolymer base or a solid biopolymer base by collecting part from the cultured biopolymer spores; a first mixture obtaining step which injects the sterilized biomass, the biopolymer base, nutrients and water, and mixes the same to obtain a first mixture; a primary growing step which injects the first mixture into a mold to grow the same; a secondary growing step which removes the mold and grows a first material primarily grown to a secondarily grown material; a step which thermal compresses the secondarily grown plate material molded products and improves a surface property thereof; and a humidity control step.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a human-friendly functional plate using a biopolymer,

The present invention relates to a method of manufacturing a plate material using a biopolymer, and more particularly, to a method of manufacturing a plate material having various thicknesses, densities, and shapes in order to uniformly distribute a biopolymer mushroom mycelium on a biomass material surface, And a method for manufacturing a human-friendly functional plate material using the biopolymer.

Insulation materials are largely divided into organic and inorganic materials. Typical examples of organic materials are styrofoam, urethane foam, and phenol foam, which are manufactured using petrochemical resources. Inorganic materials include glass wool and mineral wool using inorganic materials.

In addition, styrofoam and urethane foam are typical insulation materials used in dual buildings.

Such foam products are advantageous in that they are light in weight, convenient to carry, relatively low in cost, have low volume density and excellent in heat insulation effect, and are used variously as insulation materials for construction, packaging boxes and so on according to foam types.

In particular, Styrofoam is a foam product composed of a styrenic resin and a foaming gas based on a chemical substance, so it is not environmentally friendly and its strength is weak.

In addition, styrofoam caused by destruction and disposal causes the aesthetics of the surrounding environment to be harmful, and it also flows into the sea and causes marine pollution.

In the case of urethane foam, it is a product made by reacting isocyanate with polyol. It is a building material which causes fatal human injury due to the generation of hydrogen cyanide gas in case of fire even though it has excellent heat insulation performance.

In addition, foam products used for building insulation materials and packing boxes are cut during the processing and some of the waste materials are recycled, but the rest are discarded as they are, and various environmental pollutants can be generated have.

Most of the discarded styrofoam and urethane foam are being landfilled or incinerated.

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등)가 배출될 뿐만 아니라 폐기처분에 따른 비용이 많이 발생되는 문제점이 있었다.As described above, when the waste styrofoam and the waste urethane foam are buried, they do not rot well and cause soil pollution. In case of incineration, a large amount of harmful gas

,

And the like, as well as the cost of disposal.

In order to solve such a problem, Japanese Patent No. 10-1571043 discloses a mycelium produced by using hypha which is an eco-friendly material that is similar to a conventional insulating material and can be produced at low cost using agricultural wastes, A method for manufacturing a heat insulating material and a hygroscopic insulating material is provided.

In more detail, the mycelial heat insulator as described above is produced through a humidification process after growing mycelium in a mold and drying at high temperature to stop the growth of hyphae.

However, since the oxygen supply is not smooth at the portion directly contacting the mold when the heat insulating material is put into the mold, the aerobic mycelium does not grow uniformly. Therefore, the bonding force of the raw materials is lowered, There arises a problem such as deterioration of color, non-uniformity of color in the preparation.

The mycelial insulator can replace the conventional low density insulator and sound absorbing material, but is difficult to use as a plate material having various uses due to its low density, and production of products with uniform thickness and density is limited.

Therefore, if mushroom mycelium is used as a substitute for foam products with various uses, it is possible to distribute mycelium biopolymer uniformly, but if the residual by-products left in the processing process are irrelevant to the discharge of various environmental pollutants, In addition, it can save material (energy), and if it can be manufactured as a functional plate material, it will be welcomed by many concerned people.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a biomass- And thus it is possible to uniformly distribute mycelium as a biopolymer to the final product, which is a final product, to improve water repellency and surface performance compared with conventional hypha insulators.

In addition, the present invention provides a method for improving the smoothness of the surface of the conventional mycelial heat insulator by stopping the growth of the biopolymer by subjecting the secondarily grown plate-like molded product to hot-pressing treatment with a hot press, Another object of the present invention is to provide a method for manufacturing a human body-friendly functional plate using a biopolymer which is an eco-friendly material as a functional material capable of producing a medium / high density plate material, which is a conventional plate material for interior or interior use.

However, the object of the present invention is not limited to the above-mentioned object, and another object which is not mentioned can be understood by those skilled in the art from the following description.

In order to accomplish the above object, the present invention provides a method for producing a functional plate material using biomass resources, biomass, and biomass, which are either discarded or unused, and collecting the biomass and sterilizing the biomass, Culturing a biopolymer spore based on porphyrobacteria on a sterilized PDA culture medium and collecting a part of the cultured biopolymer spore to prepare a liquid type biopolymer or solid type biopolymer substrate A first mixture growing step of injecting the sterilized biomass and the biopolymer base material together with nutrients and moisture to obtain a first mixture, And a second step of removing the forming mold and growing the first primary growth material as a second primary growth material Growth stage.

Also, the step of pressurizing the plate-shaped molded product, which is secondarily grown in the above, at a temperature of 110 to 150 ° C at a pressure of 0 to 10 kgf / cm 2 for 10 to 60 minutes with a hot press, and thereby subjecting the low- can do.

Or a step of pressurizing the plate-shaped molded product which is secondarily grown at a temperature of 115 to 170 ° C at a pressure of 5 to 40 kgf / cm 2 for 5 to 60 minutes by means of a hot press, thereby producing a medium / high density plate Manufacture of merchandise.

And a step of humidifying the functional plate material after the hot-pressing treatment is completed.

Wherein the biomass is a natural vegetable resource composed of carbon, hydrogen, and oxygen as regeneration and sustainable resources generated in forests, farmland, etc., and crushing the collected biomass to have a size of 1.5 to 13mesh; To a moisture content of 1 to 12%.

The crushed biomass is sterilized at 100 to 140 ° C for 30 minutes to remove contaminants to prevent growth of the biopolymer and uniform growth.

In the step of culturing the biopolymer spore, 1 to 5 parts by weight of spore spores are added to 100 parts by weight of a PDA (Potato Dextrose Agar) medium sterilized at 121 DEG C for 30 minutes, and the mixture is cultured at 25 to 28 DEG C for a predetermined period, And the predetermined period is 3 to 7 days.

A part of the cultured biopolymer spores was collected and put into a liquid culture medium. Part of the cultured biopolymer spores was separated into 100 parts by weight of the liquid medium, and 1 to 2 parts by weight of the spores was added. The circuit is agitated for 3 to 5 days and then cultured to produce a liquid type biopolymer substrate.

The liquid medium is a mixture prepared by mixing 20 to 30 parts by weight of dextrin, 3 to 8 parts by weight of peptone, and 7 to 13 parts by weight of malt extract with respect to 100 parts by weight of distilled water.

Also, 50 to 80 parts by weight of the liquid type biopolymer base material is mixed with 100 parts by weight of the sterilized biomass, and 8 to 15 parts by weight of saccharides are added as nutrients to prepare a solid biopolymer base material.

The saccharide is characterized in that it is a starch or a mixture of glucose or starch and glucose.

Also, the step of obtaining the first mixture using the liquid-type biopolymer substrate may include the steps of mixing the liquid-type biopolymer substrate in the sterilized biomass by spraying or mixing method as a method for sequencing / simplifying the manufacturing process, 50 to 80 parts by weight of the liquid type biopolymer substrate and 8 to 15 parts by weight of saccharides are added to 100 parts by weight of the liquid type biopolymer substrate to obtain a first mixture using the liquid type biopolymer substrate.

The saccharide is characterized in that it is a starch or a mixture of glucose or starch and glucose.

Also, the step of obtaining the first mixture using the solid biopolymer base material comprises mixing the solid biopolymer base material in the sterilized biomass as a method for increasing the growth rate of the biopolymer of excellent performance, 5 to 10 parts by weight of the solid biopolymer base is added to 100 mass parts of the mass to obtain a first mixture using the solid biopolymer base.

Also, in order to supply water to the first mixture using the solid biopolymer base material, 60 to 100 parts by weight of normal temperature water is mixed with 100 parts by weight of the first mixture, and the saccharide is mixed to supply nutrients.

The saccharides are mixed with the above-mentioned warm water and supplied, and 5 to 18 parts by weight of the saccharides are added to 100 parts by weight of the warm water.

The first growth step in which the first mixture is injected into the molding die to grow is firstly grown for 3 to 7 days under an environmental condition maintained at a temperature of 25 to 28 DEG C and a humidity of 90 to 95%.

A second growth step of removing the forming mold and growing the first grown primary growth material as a second growth step, wherein the forming mold is removed from the primary growth material having undergone the first growing step, Under the same environmental conditions, secondary growth is carried out for 2 to 4 days.

The humidity conditioning step may be carried out by leaving the functional panel material subjected to the heat treatment at 25 ± 1 ° C and humidity 65 ± 2% until the moisture content of the product reaches 8 to 12% To make the moisture of the atmosphere similar to the humidity of the atmosphere so that no deformation occurs.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

As described above, according to the present invention, a plate material for various uses is produced by utilizing biomass resources and biopolymer mycelium hyphae. As a substitute for foamed foam such as styrofoam and urethane foam, a natural-friendly, And the performance as a heat insulating material of the formed plate material is similar to or superior to that of the foamed foam.

Also, since the plate material of the present invention can be manufactured in various shapes, it is possible to replace the inner packaging material, internal / external event molding, pollen, etc. of existing medium and lightweight products. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a method of manufacturing a human-friendly functional plate material using the biopolymer of the present invention.
Figure 2 is a liquid type biopolymer substrate and a solid type biopolymer substrate of the present invention.
FIG. 3 shows a state in which biopolymer spores based on porcine bacteria are cultured on the sterilized PDA medium of the present invention.
Figure 4 shows the sterilization treatment of the shredded biomass of the present invention.
Fig. 5 shows a state in which the primary mold is firstly removed and the primary mold is grown secondarily.
6 shows the state before and after heat treatment of the low density functional sheet material and the medium / high density functional sheet material according to the present invention.
FIG. 7 is a graph showing the thermal conductivity and the thermal conductivity according to the density of the human-friendly functional sheet material using the biopolymer of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

Referring to FIG. 1, in a method of manufacturing a functional plate material using biomass (200) resources that are discarded or not used and biomass fungus mycelia, biomass is collected and sterilized to obtain sterilized biomass (S120) of culturing a biopolymer spore based on porphyrobacteria on a sterilized PDA medium (S120); and collecting a part of the cultured biopolymer spore to form a liquid type biopolymer based or solid type biopolymer based on (S130) of obtaining a first mixture by injecting nutrients and moisture into the sterilized biomass and the biopolymer base material to obtain a first mixture, (S140) for growing a first primary growth material by a first growth step (S140); and a second growth step And a secondary growth step (S150).

And a step (S160a) of pressurizing the secondarily grown plate shaped material by a hot press at 110 to 150 ° C for 10 to 60 minutes at 0 to 10 kgf / cm 2 (S160a), thereby forming a low density functional sheet .

And a step (S160b) of pressurizing the secondarily grown plate shaped material by a hot press at a temperature of 115 to 170 DEG C for 5 to 60 minutes at 5 to 40 kgf / cm < 2 > (S160b) Thereby producing a high-density plate material.

(S170) of performing a humidification process on the functional platelets after the thermo-pressure treatment is completed, thereby uniformly distributing biopolymer hyphae on the biomass 200 surface.

More specifically, the humidity conditioning step is performed at a temperature of 25 ± 1 ° C. and a humidity of 65 ± 2 ° C. after completion of the production of a low / medium / high density functional sheet material, and the moisture content of the product reaches 8 to 12% So that the moisture inside the functional plate material is made to be similar to the humidity of the atmosphere so that deformation does not occur.

In addition, the step of subjecting the hot-pressure treatment is characterized in that it is possible to manufacture a functional plate-shaped material having various thicknesses and densities by adjusting the weight of the plate-shaped material or adjusting the pressure applied to the plate-shaped material.

In addition, the biopolymer used in the present invention is a bacterium having excellent growth in a softwood species, and the bacillus can be used as a waste medium of common mushroom such as black mulberry root and mushroom fungus as well as mushroom.

The biomass 200 is a natural vegetable resource composed of carbon, hydrogen, and oxygen as regeneration and sustainable resources generated in forests, farmland, etc., and crushing the collected biomass 200 to have a size of 1.5 to 13mesh. And adjusting the water content of the crushed biomass to be 1 to 12%.

More specifically, the pulverized biomass 200 is preferably pulverized to a size of 5 to 10 mesh, and the optimum water content is 2 to 8%.

The crushed biomass 200 is sterilized at 100 to 140 ° C. for 30 minutes to remove contaminants to prevent growth of the biopolymer and uniform growth.

A part of the cultured biopolymer spores was collected and put into a liquid culture medium. Part of the cultured biopolymer spores was separated into 100 parts by weight of the liquid medium, and 1 to 2 parts by weight of the spores was added. The circuit is agitated for 3 to 5 days and then cultured to produce a liquid type biopolymer substrate.

The liquid medium is a mixture prepared by mixing 20 to 30 parts by weight of dextrin, 3 to 8 parts by weight of peptone, and 7 to 13 parts by weight of malt extract with respect to 100 parts by weight of distilled water.

Also, 50 to 80 parts by weight of the liquid type biopolymer base material is mixed with 100 parts by weight of the sterilized biomass, and 8 to 15 parts by weight of saccharides are added as nutrients to prepare a solid biopolymer base material.

The saccharide is characterized in that it is a starch or a mixture of glucose or starch and glucose.

Also, the step of obtaining the first mixture using the liquid-type biopolymer substrate can be performed by mixing the liquid type biopolymer substrate 110 in the sterilized biomass 200 by spraying or mixing 50 to 80 parts by weight of the liquid type biopolymer and 8 to 15 parts by weight of saccharides are added to 100 parts by weight of the sterilized biomass to obtain a first mixture using the liquid type biopolymer base.

The saccharide is characterized in that it is a starch or a mixture of glucose or starch and glucose.

Also, the step of obtaining the first mixture using the solid biopolymer base material may include mixing the solid biopolymer base material in the sterilized biomass 200 as a method for increasing the growth rate of the biopolymer having excellent performance, 5 to 10 parts by weight of the solid biopolymer base is added to 100 parts by weight of the sterilized biomass to obtain a first mixture using the solid biopolymer base.

In order to supply water to the first mixture using the solid biopolymer base material, 60 to 100 parts by weight of normal temperature water is mixed with 100 parts by weight of the first mixture, and saccharides are mixed to supply nutrients.

The saccharide is mixed with the above-mentioned hot water, and 5 to 18 parts by weight of the saccharide is added to 100 parts by weight of the hot water.

Also in the above, a liquid or solid biomolecular substrate 120 is used in the biomass 200 to obtain a first mixture, wherein the liquid or solid biomolecular substrate enhances the bond strength between the shredded biomass 200 It is possible to obtain an effect of replacing the adhesive used in the building material manufacturing process which is made from the existing crushed raw material.

Also, the first growth step in which the first mixture is introduced into the molding die to grow is firstly grown for 3 to 7 days under an environmental condition maintained at a temperature of 25 to 28 DEG C and a humidity of 90 to 95%.

A second growth step of removing the forming mold and growing the first grown primary growth material as a second growth step, wherein the forming mold is removed from the primary growth material having undergone the first growing step, Under the same environmental conditions, secondary growth is carried out for 2 to 4 days.

The growth conditions may be different depending on the kind of the biopolymer, i.e., mushroom seed, and the first mixture may be weighed in consideration of the density depending on the characteristics of the final product to be prepared, Or a medium / high density functional sheet material can be produced.

Further, the forming die can be manufactured differently depending on the use and shape of the plate-like material.

FIG. 3 shows a state in which biopolymer spores based on porcine bacteria are cultured on the sterilized PDA medium of the present invention.

3 (a), in the step of culturing the biopolymer spore, 1 to 5 parts by weight of spore bacterium is added to 100 parts by weight of a PDA (Potato Dextrose Agar) medium sterilized at 121 DEG C for 30 minutes, Culturing for a period of time.

At this time, the period is 3 to 7 days, and the spore bacterium is cultured to be used as a biopolymer substrate.

In more detail, the optimal temperature for culturing the sporicospores is 26 to 27 ° C.

2 attached is a liquid type biopolymer substrate and a solid type biopolymer substrate of the present invention.

The present invention can use the liquid type biopolymer base material 110 as shown in Fig. 2 (a) or the solid biopolymer base material 120 as shown in Fig. 2 (b).

Referring to FIG. 2 (a), the preparation of the liquid type biopolymer base material is carried out by taking a part of the cultured biopolymer spores into a liquid culture medium, adding 100 parts by weight of the liquid culture medium A part of the cultured biopolymer spores is separated and added to 1 to 2 parts by weight, followed by stirring at 26 to 27 ° C for 120 to 3 days to 5 days.

The liquid medium is a mixture prepared by mixing 20 to 30 parts by weight of dextrin, 3 to 8 parts by weight of peptone, and 7 to 13 parts by weight of malt extract with respect to 100 parts by weight of distilled water. More specifically, The optimum blending ratio of the medium is a mixture prepared by mixing 25 parts by weight of the dextrin, 5 parts by weight of peptone and 10 parts by weight of malt extract with respect to 100 parts by weight of distilled water.

Referring to FIG. 2b, the solid biopolymer base material is prepared by mixing 50 to 80 parts by weight of the liquid type biopolymer base material with 100 parts by weight of the sterilized biomass, 8 to 15 parts by weight of saccharide as nutrients .

The saccharide is also characterized by being a mixture of starch or glucose or starch and glucose.

Figure 4 of the accompanying drawings shows the sterilization treatment of the shredded biomass of the present invention.

4, the crushed biomass 200 is sterilized at 100 to 140 ° C. for 30 minutes to remove contaminants, thereby allowing uniform growth without affecting the growth of the biopolymer .

More specifically, the crushed biomass 200 is most suitably sterilized at 120 ° C.

FIG. 5 is a view showing a state where the primary mold is firstly removed and the secondary mold is grown.

5A, a second growth step of removing the forming mold and growing the first-grown first-order growth material as a second growth step is a step of growing a first-order growth material from the first- The primary growth material having undergone the primary growth at this time is maintained in a constant shape when the forming mold is removed.

5 (b), the second growth step of removing the forming mold and growing the first-grown first-stage growth material as the second growth step is performed at a temperature of 25 to 28 ° C, Allow the secondary growth to occur for 2 to 4 days under the environmental conditions of 90-95% humidity.

FIG. 6 is a graph showing the state before and after thermo-pressure treatment of the low density functional sheet material and the medium / high density functional sheet material according to the present invention.

Fig. 6 (a) is a plate-like molded product having undergone second-order growth, and Fig. 6 (b) is a low-density heat insulating / sound-absorbing plate made by hot-

6A, when the target product of the final product is a heat insulating / sound absorbing plate-like material for low density, the secondarily grown plate material is heated at 110 to 150 ° C at 0 to 10 kgf / Press for 60 minutes and heat treat.

Referring to FIG. 6 (b), the low density functional platelet material after completion of the hot-pressing is a heat insulating material or a sound absorbing material improved in smoothness and surface water repellency of the surface, and can replace styrofoam and urethane foam, which are conventional resin foam materials.

6 (c) is a second-order plate-like molded product, and FIG. 6 (d) is an interior or interior board material having a medium / high density produced by hot-pressing.

Referring to FIG. 6C, when the intended use of the final product is a plate-like material for interior or interior having a medium / high density, the secondarily grown plate-shaped material is pressed by a hot press at 5 to 40 kgf / Cm < 2 > for 5 to 60 minutes.

Also, referring to FIG. 6D, the medium / high density functional platelets finished with the pressure treatment have the effect of enhancing the strength of the secondary platelet-shaped workpiece after the secondary growth has been performed, thus being excellent in performance as an interior platen material and being environmentally friendly and harmless to the human body .

FIG. 7 is a graph showing the thermal conductivity and the thermal conductivity of the human-friendly functional sheet material using the biopolymer of the present invention.

Referring to FIG. 7, the sheet material of the present invention may be a low-density heat insulating material or a sound absorbing material that can replace conventional styrofoam or urethane foam.

It is also characterized in that it can be used as a board material for a built-in use or a sandwich panel by producing a plate material having various thicknesses, densities and shapes according to the purpose of use through a heat-pressure treatment process.

In more detail, the step of improving the surface pressure and the pressure treatment of the second-grown plate-like molded product can be accomplished by preparing a functional plate having a medium / high density by subjecting it to a high / medium density process, Whereby a heat insulating / sound absorbing plate material for low density can be manufactured.

In addition, when the final product to be produced is a plate-like material having a medium / high density, the present invention can increase the weight of the biomass 200 mixed with the biopolymer base material or increase the weight of the biomass 200, Wherein the density is increased by decreasing the thickness by increasing the pressure by a hot press.

Referring to FIG. 7A, when the heat insulation performance of the plate material using the biopolymer of the present invention is measured using a thermal conductivity meter (KS F 2277), the lower the density, the better the thermal conductivity.

Referring to FIG. 7B, the sheet material using the biopolymer of the present invention is obtained by measuring a change with time in the thermal conductivity when the density is 250 kg / m 3 using a thermal conductivity meter (KS F 2277).

In addition, the present invention realizes a product using a naturally occurring substance by using the biomass (200) and a biopolymer, thereby ultimately producing a naturally friendly and harmless plate material.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100 biopolymer
110 liquid type biopolymer substrate
120 Solid bio-polymer substrate
200 Biomass

Claims (10)

A method for producing a functional plate material using biomass resources, which are either discarded or unused, and biopolymer mushroom mycelium
Collecting the biomass and sterilizing it to obtain sterilized biomass; and
Culturing a biopolymer spore based on porphyrobacteria on a sterilized PDA medium;
Preparing a liquid type biopolymer based or solid type biopolymer based on a part of the cultured biopolymer spores;
A first mixture obtaining step of adding and mixing the sterilized biomass and the biopolymer base material with nutrients and moisture to obtain a first mixture;
A first growing step of adding the first mixture into a mold and growing the mixture;
And a secondary growth step of removing the forming mold and growing the first primary growth material as a secondary growth material. The method of claim 1, wherein
And a step of subjecting the secondarily grown plate shaped material to a pressure treatment at a temperature of 110 to 150 ° C at 0 to 10 kgf / cm 2 for 10 to 60 minutes using a hot press, thereby producing a low density functional sheet as a heat insulating material or a sound absorbing material Wherein the biopolymer is a biodegradable polymer. The method of claim 1, wherein
The step of culturing the biopolymer spores
A human body-friendly functional plate material using a biopolymer is prepared by adding 1 to 5 parts by weight of spore bacterium to 100 parts by weight of a PDA (Potato Dextrose Agar) medium sterilized at 121 DEG C for 30 minutes and then culturing the mixture at 25 to 28 DEG C for a predetermined period. Gt; The method of claim 3, wherein
Wherein the predetermined period of time is 3 to 7 days. The method of claim 4, wherein
A part of the cultured biopolymer spores was collected and added to a liquid medium
A part of the cultured biopolymer spores is separated and added to 1 to 2 parts by weight of the culture broth, and the mixture is cultured at 26 to 27 ° C for 120 to 3 days to 5 days to cultivate the liquid type biopolymer substrate Wherein said biopolymer is a biodegradable polymer. The method of claim 5, wherein
Wherein the liquid medium is a mixture prepared by mixing 20 to 30 parts by weight of dextrin, 3 to 8 parts by weight of peptone and 7 to 13 parts by weight of malt extract with respect to 100 parts by weight of distilled water. A method for manufacturing a plate material. The method of claim 6, wherein
Wherein 50 to 80 parts by weight of the liquid type biopolymer base material is mixed with 100 parts by weight of the sterilized biomass, and 8 to 15 parts by weight of saccharides are added as nutrients to prepare a solid biopolymer base material. A method for manufacturing an affinity functional sheet material. The method of claim 7, wherein
Wherein the saccharide is a starch or a mixture of glucose or starch and glucose. The method of claim 5, wherein
Obtaining the first mixture comprises:
50 to 80 parts by weight of the liquid type biopolymer and 8 to 15 parts by weight of saccharides are added to 100 parts by weight of the sterilized biomass in the sterilized biomass by spraying or mixing the liquid type biopolymer substrate, To obtain a first mixture using the bio-polymer. The method of claim 9, wherein
Wherein the saccharide is a starch or a mixture of glucose or starch and glucose.

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