KR20210059654A - Rice processed plastic composition and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a rice processed plastic composition and a method for preparing the same. The rice processed plastic composition is obtained by extruding a mixture containing rice powder mixed with a plasticizer and starch at a predetermined temperature under a predetermined extrusion rate condition. The rice processed plastic composition according to the present invention and a method for preparing the same use a biodegradable natural material, rice, to obtain a biodegradable plastic having excellent physical properties and stability through a simple process using an organic acid, sugar and vegetable oil. Therefore, the biodegradable plastic can be decomposed by the natural microorganisms upon the incineration, and thus can minimize environmental pollution, such as soil and air pollution, caused by landfill and incineration.

Description

Rice processed plastic composition and manufacturing method thereof TECHNICAL FIELD

The present invention relates to a plastic composition for processing rice and a method for manufacturing the same, and more particularly, to a plastic composition in which physical properties are adjusted by including sugar such as glucose, organic acids such as lactic acid, and corn oil in rice, and a method for manufacturing the same. .

Plastics are light, inexpensive, unbreakable, and easy to manufacture in various forms, making a great contribution to the development of human life and science, while environmental pollution due to not being self-decomposed upon disposal becomes more and more serious day by day. have.

In particular, plastics for packaging, living and agricultural use are almost neglected except for the method of recovering and reusing when discarded after use, and the resulting environmental pollution, especially soil pollution, is increasing in severity. Accordingly, incineration, landfill, regeneration, etc. for the treatment of waste plastics are being considered, but there is a problem in that secondary environmental pollution occurs during the treatment process.

Republic of Korea Patent Publication No. 10-1991-0006422

The present invention was invented to solve the above problems, and has excellent physical properties and stability through a simple process using organic acids, sugars, and vegetable oils using rice, which is a biodegradable natural material, and is used as a property control of synthetic plastics. An object thereof is to provide a rice-processed plastic composition and a method of manufacturing the same that can minimize side effects caused by plastic plasticizers.

The plastic composition for processing rice according to the present invention for achieving the above object is produced by extruding a mixture of rice powder with a plasticizer and starch under a predetermined temperature condition and at a predetermined extrusion speed condition.

The temperature condition is preferably 80 ℃ to 150 ℃.

The extrusion speed is 50rpm to 200rpm is applied.

In the mixture, 20 to 40 parts by weight of the plasticizer may be mixed with respect to 100 parts by weight of the rice powder.

The plasticizer is preferably at least one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol.

In the mixture, the rice powder, plasticizer, and starch may be mixed with an auxiliary agent to improve physical properties.

The auxiliary agent may be at least one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silica, and glass fiber.

The mixture is preferably mixed with the rice powder, plasticizer, starch and auxiliary agents, and additives.

The additive may be at least one of glucose, lactic acid, or corn oil.

The starch may be at least one of potato starch, corn starch, or sweet potato starch.

On the other hand, the rice processing plastic composition manufacturing method according to the present invention includes a mixture manufacturing step of mixing rice powder with a plasticizer and starch to prepare a mixture, and pressing the mixture under a predetermined temperature condition under a predetermined extrusion condition to form a rice processed plastic. Comprising the step of preparing the composition extruding the composition.

In the step of preparing the composition, the temperature condition is preferably 80°C to 150°C.

In the step of preparing the composition, the extrusion speed may be 50 rpm to 200 rpm.

In the preparation of the mixture, it is preferable to prepare the mixture by mixing 20 to 40 parts by weight of the plasticizer based on 100 parts by weight of the rice powder.

The plasticizer may be at least one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol.

In the preparation of the mixture, the rice powder, plasticizer, and starch are mixed with an auxiliary agent to improve physical properties to prepare the mixture.

The auxiliary agent is preferably at least any one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silica, or fiberglass.

In the step of preparing the mixture, the mixture may be prepared by mixing an additive with the rice powder, plasticizer, starch, and auxiliary agent.

The additive may be at least one of glucose, lactic acid, or corn oil.

The starch is preferably at least one of potato starch, corn starch, or sweet potato starch.

The rice-processed plastic composition and its manufacturing method according to the present invention is a simple process using organic acids, sugars, and vegetable oils using rice, which is a biodegradable natural substance. Because it can be decomposed by microorganisms in the soil, it is possible to minimize environmental pollution such as soil and atmosphere due to landfill and incineration.

In addition, the present invention is harmless to the human body because it is manufactured by mixing raw materials using organic acids, sugars, and vegetable oils with plastic plasticizers and auxiliary agents used to control the physical properties of synthetic plastics.

1 is a flow chart for a method of manufacturing a plastic composition for processing rice according to the present invention,
Figure 2 is a cross-sectional view of an extruder used in the manufacturing method of the plastic composition for processing rice of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a rice processing plastic composition and a method of manufacturing the same according to an embodiment of the present invention. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual size for clarity of the present invention.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of the presence or addition.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

The plastic composition for processing rice according to the present invention is produced by pressing a mixture of rice powder with a plasticizer and starch under a predetermined temperature condition and under a predetermined pressure condition.

Here, rice is an important global agricultural product along with barley and wheat, and about 92% of it is produced in various countries in Asia, and most of it is used as a staple food in Asia. Rice consists of a layer of rice bran (5-6% as pericarp, seed skin), starch (92% as algae layer, endosperm), and pear (2-3%). The endosperm is mainly made of starch and is edible as white rice. Particularly, the starchy part is used as a staple food for white rice, and whole rice or rice bran is extracted with water, steam, and alcohol to be used for edible and industrial purposes. In countries where rice is the staple food, consumption per person per year is generally calculated as about 180 liters. As for the rice powder, a powder obtained by crushing the rice into particles of a predetermined size is applied.

Meanwhile, the rice powder is not limited thereto, and a powder obtained by steaming rice using steam, drying, and crushing the dried rice may be used. That is, uncoated rice may be steam-distilled to extract rice oil, then the remaining by-products are dried, and the powder obtained by crushing the dried by-products may be used as rice powder. Rice oil can be extracted and the remaining by-products can be recycled. Here, since the rice powder extracted from the oil component is used, the physical properties of the rice-processed plastic composition such as hardness are improved.

In addition, the plastic composition for processing rice according to another embodiment of the present invention may use a by-product generated after extraction of alcohol from rice as rice powder. Here, as the rice powder, a powder obtained by extracting alcohol from rice, drying the remaining by-products, and crushing the dried by-products may be used.

The above-described mixture is prepared by mixing the rice powder with a plasticizer, and it is preferable that 30 to 40 parts by weight of the plasticizer are mixed with respect to 100 parts by weight of the rice powder. Here, as the plasticizer, at least one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol is applied.

Glycerol is a liquid produced with fatty acids when oils and fats are hydrolyzed, and they are colorless and transparent, and have a sweet taste and tenacity. Sorbitol is a hexavalent alcohol obtained by reducing hexose such as glucose, and is preferably used in a liquid form. Fructose is a monosaccharide contained in honey or sweet fruit, and is used in a liquid state. Formamide is a colorless liquid with a pale ammonia odor and is denser than water. In addition to water, the mixture may improve physical properties of the composition by using glycerol, sorbitol, fructose, urea, formamide, or xylitol as a plasticizer.

In addition, the mixture of the present invention is prepared by mixing rice powder and plasticizer with starch. At least one of potato starch, corn starch, or sweet potato starch is used as the starch. Here, in the mixture, 0 to 40 parts by weight of starch may be mixed with respect to 100 parts by weight of rice powder.

Meanwhile, the mixture of the present invention may be mixed with rice powder, plasticizer and starch, and an auxiliary agent to improve physical properties. At least one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silica stone, or glass fiber is used as the auxiliary agent.

Talc is a soft rock with magnesium as its main component, and is also called "talc". When a composition is prepared by mixing talc in the mixture, the strength and fire resistance of the composition are improved. Graphene is a film made of carbon atoms, and when mixed with a mixture, the strength and durability of the composition are improved. Wood powder is a powder obtained by pulverizing wood into particles of a predetermined size, and when mixed with a mixture, the composition has good disintegration properties and strength is improved. Calcium carbonate can be mixed in the mixture in the form of a powder, and can be obtained through shells or eggshells. The calcium carbonate may be mixed with the mixture to improve the strength and durability of the plastic composition. Magnesium carbonate is a magnesium salt of carbonic acid, and may be mixed in a mixture to improve the strength of the composition. The mica is a ceramic material and may be mixed in a mixture to improve durability and strength of the composition. Silica is a mineral mainly composed of quartz, and is mixed in a mixture in a powder form, and can improve the durability of the composition. Glass fiber is a mineral fiber made of molten glass in the shape of a fiber, and can be mixed in a mixture to improve the strength of the composition. Here, in the mixture, 0 to 5 parts by weight of an auxiliary agent may be mixed with respect to 100 parts by weight of the rice powder.

Meanwhile, the mixture of another embodiment of the present invention may be prepared by mixing rice powder, a plasticizer, and an additive with an auxiliary agent.

Here, as the additive, lactic acid may be applied. The lactic acid is manufactured by fermentation using starch and sugars as raw materials, and is used as an acidifying agent for fruit juice, syrup, and soft drinks, and the boiling point at the time of decompression or pressurization is 100 degrees or higher, so that it is a physical property modifier when processing plastic using rice. Can be used as. Even if lactic acid is used in food containers and released into food, lactic acid has the advantage of suppressing the growth of harmful bacteria in the intestine when drinking it to improve the function of the intestine. It reacts with the starch of the to adjust the physical properties and does not affect the taste at the same time. Here, the mixture is preferably 0.5 to 2 parts by weight of the lactic acid mixed with respect to 100 parts by weight of the rice powder.

In addition, glucose may be applied as an additive. Glucose is present in large amounts in sweet fruits and is the most widely present sugar in the biological world. Since some of the glucose produced by plants is made in the form of cellulose and starch, it can affect the properties of the rice starch, so it is possible to control the properties of the plastic processed into rice. Here, the mixture is preferably 0.5 to 1 part by weight of the glucose mixed with respect to 100 parts by weight of the rice powder.

And, corn oil may be applied as an additive. Corn oil is derived from the embryo part of the corn seed. 99% of refined corn oil is triglyceride, consisting of 83% of unsaturated fatty acids and 13% of saturated fatty acids. It is used in cooking as salad oil or frying oil, or as a main component of margarine. In addition, it is also used to control properties in the manufacture of soaps, paints, pesticides, and ointments. Here, the mixture is preferably 1 to 3 parts by weight of corn oil mixed with respect to 100 parts by weight of the rice powder.

On the other hand, the rice processing plastic composition of the present invention is produced by extruding the mixture under a predetermined temperature condition by an extruder under a predetermined extrusion condition. Here, the rice-processed plastic composition is prepared by extruding at an extrusion speed of 50 rpm to 200 rpm under a temperature condition of 80°C to 150°C.

On the other hand, Figure 1 is a flow chart for the rice processing plastic composition manufacturing method of the present invention is shown.

Referring to the drawings, the rice processing plastic composition manufacturing method includes a mixture manufacturing step (S110), a composition manufacturing step (S120), and a cooling step (S130).

The mixture preparation step (S110) is a step of preparing a mixture by mixing a plasticizer and starch with rice powder. Here, the mixture is prepared by mixing 30 to 40 parts by weight of the plasticizer based on 100 parts by weight of rice powder. At this time, at least one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol is applied as the plasticizer.

Meanwhile, the rice powder may be a powder obtained by steaming rice using steam, drying, and then crushing the dried rice or extracting alcohol from the rice, drying the remaining by-products, and crushing the dried by-products.

In addition, rice powder may be used as rice powder by steam distilling unpolished rice to extract rice oil, then drying the remaining by-products, and crushing the dried by-products. Rice oil can be extracted and the rest of the by-products can be recycled.

In addition, as for the starch, at least one of potato starch, corn starch, or sweet potato starch is used. Here, in the mixture, 0 to 40 parts by weight of starch may be mixed with respect to 100 parts by weight of rice powder.

Meanwhile, the mixture may be prepared by mixing rice powder, plasticizer, and starch with an auxiliary agent to improve physical properties. At least one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silicate, and glass fiber is used as the auxiliary agent. Here, in the mixture, 0 to 5 parts by weight of an auxiliary agent may be mixed with respect to 100 parts by weight of the rice powder.

Meanwhile, the mixture may be prepared by mixing rice powder, plasticizer, starch, and additives with an auxiliary agent.

Here, as the additive, lactic acid may be applied, and 0.5 to 2 parts by weight of the lactic acid may be mixed with respect to 100 parts by weight of the rice powder to prepare a mixture. In addition, glucose may be applied as an additive, and a mixture may be prepared by mixing 0.5 to 1 part by weight of the glucose based on 100 parts by weight of the rice powder. In addition, corn oil may be applied as an additive, and a mixture may be prepared by mixing 1 to 3 parts by weight of the corn oil based on 100 parts by weight of the rice powder.

On the other hand, the composition manufacturing step (S120) is a step of producing a rice-processed plastic composition by pressing the mixture under a predetermined temperature condition and a predetermined pressure condition. Here, the mixture is extruded at an extrusion speed of 50 rpm to 200 rpm under a temperature condition of 80°C to 150°C using an extruder to prepare a rice-processed plastic composition.

Meanwhile, the extruder 200 is shown in FIG. 2.

The extruder 200 is provided with an input space into which the mixture is injected, a housing 210 having a discharge port through which the mixture in the input space is discharged at a front end thereof, and heating to melt the mixture injected into the input space And a pressurizing unit 230 installed in the housing 210 to pressurize the mixture in the input space and discharge the mixture to the discharge port.

The housing 210 is provided with an input space therein, and is formed in a cylindrical shape extending in the front-rear direction. An inlet port through which the mixture can be injected into the input space is provided on the rear upper outer circumferential surface of the housing 210, and a discharge port is formed on the front end surface of the housing 210 so that the mixture contained in the input space can be discharged. At this time, the front end of the housing 210 is formed so that the cross-sectional area of the input space decreases toward the front.

On the other hand, at a position adjacent to the discharge port of the housing 210, a transfer unit 300 capable of transferring the mixture discharged through the corresponding discharge port to the next process is installed. The transfer unit 300 has one end installed adjacent to the front end of the housing 210 to transfer the mixture discharged from the discharge port of the housing 210. The conveying unit 300 is applied with a conveyor that conveys the mixture.

Although not shown in the drawing, the heating unit is installed on the inner wall surface of the housing 210 and includes a plurality of heating wires that generate heat by electricity applied from the outside. It is preferable that the heating unit heats the mixture inside the housing 210 to 80°C to 150°C. Meanwhile, the heating unit is not limited thereto, and any heating means for heating the mixture inside the housing 210 may be applied.

The pressing unit 230 includes a screw 231 rotatably installed in the housing 210 and a rotating part 232 that rotates the screw 231.

The screw 231 is rotatably installed in the input space and extends a predetermined length in the front-rear direction. In addition, the screw 231 is formed on the outer circumferential surface, a plurality of spiral pressure blades along the longitudinal direction. The screw 231 rotates within the input space by the rotation unit 232, and pressurizes the input mixture through the inlet and transfers it to the front. Meanwhile, although the screw 231 is not shown in the drawing, a plurality of screws 231 may be installed in the housing 210. In addition, although the pressure blade of the screw 231 is not shown in the drawing, it extends along the edge to crush the mixture, and has a sharp crushing blade at the end, and a plurality of crushing protrusions protrude on each of the front and rear surfaces. It can also be formed. On the other hand, although not shown in the drawings, an impact applying unit may be installed on the pressure blade to apply an electric shock to crush the mixture contained in the housing 210. The impact applying unit includes a plurality of electrode plates installed to be spaced apart from each other on the outer circumferential surface of the pressure blade, and a power supply unit for supplying high voltage to the electrode plates at predetermined time intervals. The mixture may be crushed more finely by the impact application part.

The rotating part 232 is installed at the end of the screw 231 to supply rotational force to the screw 231. Although the rotation unit 232 is not shown in the drawing, it is provided between the rotation unit and the end of the screw 231 and the rotation unit, and includes a reduction unit that reduces the rotational force generated through the rotation unit and transmits it to the screw 231 do. In the example shown in the drawing, the rotating unit is preferably an electric motor driven by electric power. The reduction unit has a number of gear teeth different from each other and includes a plurality of gears meshed with each other to reduce the rotational force of the rotating unit and transmit it to the screw 231. At this time, it is preferable that the rotating part 232 operates the screw 231 at an extrusion speed of 50 rpm to 200 rpm.

The extruder 200 configured as described above extrudes the mixture introduced into the housing 210 under a predetermined temperature condition to manufacture a rice plastic composition.

The cooling step (S130) is a step of cooling the rice-processed plastic composition extruded from the extruder after the composition manufacturing step (S120).

In the cooling step (S130), the rice-processed plastic composition discharged from the housing 210 of the extruder 200 is not immersed in the cooling water used in the existing synthetic plastics, but the rice-processed plastic composition is , Use a blower fan to forcibly blow air to cool it down. At this time, although not shown in the drawing, the rice-processed plastic composition may be cooled while being moved by the transfer unit 300 by using a plurality of blowing fans provided on the transfer unit 300. The worker puts the rice-processed plastic composition into the cutting machine immediately after the cooling process.

Since the rice-processed plastic composition is manufactured using natural materials, it is possible to prevent the occurrence of defects in the composition by blowing air and drying instead of using the cooling water used in the existing synthetic plastic manufacturing method.

The rice processing plastic composition and its manufacturing method according to the present invention described above are to produce biodegradable plastics having excellent physical properties and stability by using rice, which is a biodegradable natural substance, using organic acids, sugars, and vegetable oils, and buried and incinerated. Since it can be decomposed by microorganisms in the natural world, environmental pollution such as soil and air due to landfill and incineration can be minimized. In addition, the present invention is harmless to the human body because it is manufactured by mixing raw materials using organic acids, sugars, and vegetable oils with plastic plasticizers used for controlling the properties of synthetic plastics.

Meanwhile, starch (potato starch), plasticizer (water), and additives (glucose, lactic acid, corn oil) are mixed in various ratios to the rice powder to confirm the performance of the plastic composition for processing rice produced by the manufacturing method according to the present invention. Then, under the temperature condition of 80 ~ 150 ℃, extruded at an extrusion speed of 50rpm ~ 200rpm to obtain a specimen having a thickness of 3mm, and then the tensile strength was measured. The measured values of the tensile strength for each specimen are shown in Table 1 below. Here, the ratio of plasticizers, additives, and auxiliary agents is a weight percent of the rice powder, and if it is impossible to produce a specimen as in Example 1, it is marked as defective in the'sample preparation' item.

As for the shape of rice, the rice powder was pulverized without being milled, and the mixing ratio of the starch and plasticizer, the mixing temperature of the additive and the auxiliary agent, and the speed (rpm) were set differently from each other to prepare a specimen.

In addition, in Table 1,'rice powder' in the'rice form' item uses rice powder obtained by pulverizing rice to have particles of a predetermined size, and'steam rice powder' is used to steam rice using steam and then dry it. , Powder obtained by crushing dried rice is used, and'Rice powder after 50% alcohol extraction' is a powder obtained by drying and crushing the remaining rice after extracting 10L of alcohol of 50% concentration from 1kg of rice.

Rice form Plasticizer
(Water) (%) glucose(%) Lactic acid
(%) Corn oil
(%) Temperature
(℃) speed
(rpm) Tensile strength (kgf/mm ² ) Specimen production Example 1 Rice powder 30 110 150 - Bad Example 2 120 150 0.65 Good Example 3 120 100 - Bad Example 4 120 200 - Bad Example 5 130 150 - Bad Example 6 0.5 110 150 0.66 Good Example 7 One 110 150 0.68 Good Example 8 One 120 200 0.72 Good Example 9 35 0.5 110 150 0.71 Good Example 10 One 110 150 0.73 Good Example 11 2 110 150 0.68 Good Example 12 One 110 200 0.80 Good Example 13 One 110 150 0.70 Good Example 14 1.5 110 150 0.68 Good Example 15 2 110 150 0.52 Good Example 16 3 110 150 - Bad Example 17 40 0.5 110 150 0.62 Good Example 18 One 110 150 0.60 Good Example 19 Steam Rice Powder 35 0.5 110 150 0.68 Good Example 20 One 110 150 0.70 Good Example 21 1.5 110 150 0.72 Good Example 22 2 110 150 - Bad Example 23 Rice powder after 50% alcohol extract 35 0.5 110 150 0.50 Good Example 24 One 110 150 0.56 Good Example 25 1.5 110 150 0.63 Good Example 26 2 110 150 - Bad Example 27 Rice powder + starch (10%) 30 One 110 150 0.73 Good Example 28 One 110 150 0.74 Good Example 29 One 110 150 0.71 Good Example 30 Rice powder + starch (20%) 30 One 110 150 0.75 Good Example 31 Rice powder + starch (20%) One 110 150 0.75 Good Example 32 One 110 150 0.73 Good Example 33 Rice powder + starch (30%) 30 One 110 150 0.73 Good and good Example 34 One 110 150 0.74 Good Example 35 One 110 150 0.75 Good Example 36 Rice powder + starch (40%) One 110 150 0.76 Good Example 37 One 110 150 0.74 Good Example 38 One 110 150 0.75 Good

When described in detail with examples used in the present invention are as follows. The temperature and extrusion speed used in the examples of the present invention are not limited to this example. As in Example 1, 100 g of rice powder was mixed with 300 mL of water, and as a result, it was not possible to prepare a specimen at 110°C, but as a result, it was possible to prepare a specimen at 120°C. However, as a result of preparing after containing 0.5 to 1% of glucose at 110°C, it was possible to produce a specimen. Therefore, when 0.5 to 1% of glucose was contained, it was found that it was possible to manufacture even under 110°C, and in the following examples, it was manufactured under 110°C. As a result of measuring tensile strength by making a specimen by extruding at an extrusion speed of 50 rpm to 200 rpm using rice powder, when various glucose, lactic acid, and corn oil were mixed at 150 rpm, the specimen production was good and the tensile strength was measured. In the test was conducted at 150 rpm or less. As shown in Table 1 above, when using rice powder, dry pulverized powder after steaming rice, and dry pulverized powder after extraction with 50% alcohol, especially 35% of water is mixed and lactic acid is mixed in various concentrations. When doing so, specimens of various physical properties were produced, and even in the case of steam rice powder not shown in Table 1, rice powder after 50% alcohol extraction, it is possible to manufacture plastics of various physical properties when glucose and corn oil are properly mixed. It is fully inferred.

By mixing organic acids such as lactic acid, sugars such as glucose, and vegetable oils such as corn oil, plastic products with excellent stability in various forms can be manufactured. The composition can produce plastic products of various physical properties through a simple production process with rice processing. Molded products made from these compositions not only have excellent physical properties, but also can be decomposed by natural microorganisms when discarded after use, thus minimizing environmental pollution such as soil and atmosphere due to landfill and incineration, and mixing them with raw materials that are harmless to the human body. Because it is manufactured, it is harmless to the human body.

The description of the presented embodiments is provided to enable any person skilled in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those of ordinary skill in the art, and general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be construed in the widest scope consistent with the principles and novel features presented herein.

S110: mixture preparation step
S120: composition manufacturing step

Claims (20)

Produced by extruding a mixture of rice powder with a plasticizer and starch under a predetermined temperature condition and under a predetermined extrusion speed condition,
Rice processing plastic composition.
The method of claim 1,
The temperature condition is 80 ℃ to 150 ℃,
Rice processing plastic composition.
The method of claim 1,
The extrusion speed is 50rpm to 200rpm,
Rice processing plastic composition.
The method of claim 1,
The mixture is a mixture of 20 to 40 parts by weight of the plasticizer based on 100 parts by weight of the rice powder,
Rice processing plastic composition.
The method of claim 1,
The plasticizer is at least any one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol,
Rice processing plastic composition.
The method of claim 1,
The mixture is mixed with the rice powder, plasticizer and starch, an auxiliary agent to improve physical properties,
Rice processing plastic composition.
The method of claim 6,
The auxiliary agent is at least any one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silica stone, or glass fiber,
Rice processing plastic composition.
The method of claim 6,
The mixture is mixed with the rice powder, plasticizer, starch and auxiliary, additives,
Rice processing plastic composition.
The method of claim 8,
The additive is at least any one of glucose, lactic acid or corn oil,
Rice processing plastic composition.
The method of claim 1,
The starch is at least any one of potato starch, corn starch, or sweet potato starch,
Rice processing plastic composition.
Mixture preparation step of preparing a mixture by mixing a plasticizer and starch with rice powder; And
Comprising a composition manufacturing step of extruding the plastic composition processed rice by pressing the mixture under a predetermined temperature condition under a predetermined extrusion condition
Rice processing plastic composition manufacturing method.
The method of claim 11,
In the composition manufacturing step, the temperature condition is 80 ℃ to 150 ℃,
Rice processing plastic composition manufacturing method.
The method of claim 11,
In the composition manufacturing step, the extrusion speed is 50 rpm to 200 rpm,
Rice processing plastic composition manufacturing method.
The method of claim 11,
In the mixture preparation step, preparing the mixture by mixing 20 to 40 parts by weight of the plasticizer based on 100 parts by weight of the rice powder,
Rice processing plastic composition manufacturing method.
The method of claim 11,
The plasticizer is at least any one of water, glycerol, sorbitol, fructose, urea, formamide, or xylitol,
Rice processing plastic composition manufacturing method.
The method of claim 15,
In the preparation of the mixture, the rice powder, plasticizer, and starch are mixed with an auxiliary agent to improve physical properties to prepare the mixture,
Rice processing plastic composition manufacturing method.
The method of claim 16,
The auxiliary agent is at least any one of talc, graphene, wood flour, calcium carbonate, magnesium carbonate, mica, silica stone, or glass fiber,
Rice processing plastic composition manufacturing method.
The method of claim 19,
In the preparation of the mixture, the rice powder, plasticizer, starch and auxiliary agents are mixed with an additive to prepare the mixture,
Rice processing plastic composition manufacturing method.
The method of claim 18,
The additive is at least any one of glucose, lactic acid or corn oil,
Rice processing plastic composition manufacturing method.
The method of claim 11,
The starch is at least any one of potato starch, corn starch, or sweet potato starch,
Rice processing plastic composition manufacturing method.

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