KR102207871B1 - Rice plastic raw material manufacturing method and manufacturing apparatus thereof - Google Patents

Abstract

The present invention relates to a rice plastic raw material manufacturing method and a manufacturing device thereof. The rice plastic raw material manufacturing method comprises: a mixture manufacturing step of mixing rice powder with water to manufacture a mixture; a pellet manufacturing step of pressing the mixture under a predetermined temperature condition and a predetermined pressure condition using an extruder to manufacture plastic pellets; and a crushing step of crushing the rice plastic pellets to manufacture a rice plastic raw material. According to the present invention, the rice plastic raw material manufacturing method and the manufacturing device thereof produce biodegradable plastics with excellent properties and stability through a simple process using rice, which is a biodegradable natural material, and the biodegradable plastics can be decomposed by microorganisms in nature during landfilling and incineration. Therefore, the present invention can minimize environmental pollution such as soil, air, etc. caused by landfilling and incineration.

Description

Rice plastic raw material manufacturing method and manufacturing apparatus thereof TECHNICAL FIELD

The present invention relates to a rice plastic raw material manufacturing method and a manufacturing apparatus thereof, and more particularly, to a rice plastic raw material manufacturing method and a manufacturing apparatus thereof in which physical properties are adjusted by mixing rice with an additive.

Plastics are making a great contribution to the development of human life and science due to their excellent physicochemical properties, while environmental pollution is increasing day by day due to not being decomposed by itself when discarded.

In particular, plastics for packaging, household 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. Therefore, incineration, landfill, regeneration, etc. are being considered for the treatment of waste plastics, 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 rice, a biodegradable natural material, and can minimize side effects caused by plastic plasticizers used for controlling properties of synthetic plastics. It is an object of the present invention to provide a method for manufacturing a plastic raw material for rice and an apparatus for manufacturing the same.

The method for producing a rice plastic raw material according to the present invention for achieving the above object includes a mixture preparation step of preparing a mixture by mixing water with rice powder, and using an extruder to apply the mixture under a predetermined temperature condition and a predetermined pressure condition. A pellet manufacturing step of producing plastic pellets by pressing, and a crushing step of crushing the rice plastic pellets to produce a rice plastic raw material.

In the step of preparing the composition, the temperature condition is preferably 110 ℃ to 130 ℃.

In the step of preparing the composition, the pressure condition is applied to 400 psi to 600 psi.

In the step of preparing the mixture, it is preferable to prepare the mixture by mixing lactic acid with the rice powder and water.

In the step of preparing the mixture, the mixture is prepared by mixing glucose with the rice powder and water.

In the step of preparing the mixture, the mixture may be prepared by mixing corn oil with the rice powder and water.

On the other hand, the rice plastic raw material manufacturing apparatus according to the present invention is an extruder for extruding a mixture of rice powder and water under a predetermined temperature condition to produce rice plastic pellets, and a conveying unit for transferring the rice plastic pellets extruded from the extruder. And, it includes a crushing unit for producing a rice plastic raw material by crushing the plastic rice pellets transported by the transfer unit.

The extruder is provided with an input space into which the mixture is injected, a housing having a discharge port through which the mixture in the input space is discharged at a front end, a heating unit that melts the mixture introduced into the input space, and the housing. A pressurizing unit that is installed and pressurizes the mixture in the input space to discharge it to the discharge port, a frame installed adjacent to the discharge port, and is installed in the frame so as to be slidable in a direction crossing the discharge direction of the mixture, and the A cutting unit having a cutting blade provided at one end to cut the mixture discharged through the discharge port, a cutting driving part for reciprocating the cutting blade, and a mixture installed on the cutting blade and discharged from the extruder are dried. A heating member for heating the cutting blade to heat the cutting blade to dry the cut portion of the mixture when the cutting blade cuts the mixture when the cutting blade cuts the mixture; and It is provided on the front surface of the cutting blade at a position spaced apart from the member toward the other end of the cutting blade, further comprising a blower member for forcibly blowing air heated by the heating member toward one end of the cutting blade.

The drying unit may further include at least one induction member installed at a position spaced apart from the heating member toward one end of the cutting blade to guide some of the hot air forcedly blown by the blowing member toward the transfer unit. have.

The method for manufacturing a raw material for rice plastic according to the present invention and the device for manufacturing the same can produce biodegradable plastics having excellent physical properties and stability through a simple process using rice, which is a biodegradable natural material, and can be decomposed by natural microorganisms during landfill and incineration. It can minimize environmental pollution such as soil and air from landfill and incineration.

1 is a conceptual diagram of a rice plastic raw material manufacturing apparatus according to the present invention,
2 is a perspective view of a drying unit of the rice plastic raw material manufacturing apparatus according to another embodiment of the present invention,
3 is a flow chart for a method of manufacturing a plastic raw material for rice according to the present invention.

Hereinafter, a method for manufacturing a plastic raw material for rice and an apparatus for manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 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 of disclosure, it is to be understood as including 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 components, but the components should not be limited by the terms. These 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 used only 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 being added.

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 this application. Does not.

Figure 1 shows a rice plastic raw material manufacturing apparatus 100 according to the present invention.

Referring to the drawings, the rice plastic raw material manufacturing device 100 extrudes a mixture of rice powder and water under a predetermined temperature condition to produce rice plastic pellets, and the extruder 200 extrudes. A transfer unit 300 for transferring the rice plastic pellets, and a crushing unit 400 for crushing the plastic rice pellets transferred by the transfer unit 300 to produce a rice plastic raw material. Here, the mixture is a mixture of rice powder and additives to produce plastic, which will be described in detail later.

The extruder 200 has 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, and a heating unit that melts the mixture injected into the input space And, a pressing unit 230 installed in the housing 210 to pressurize the mixture in the input space and discharge it to the discharge port, a cutting unit 240 for cutting the mixture discharged from the housing 210, and the cutting It is installed in the unit 240 and includes a drying unit 250 for drying the mixture discharged from the extruder 200.

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 portion of the housing 210 is formed so that the cross-sectional area of the input space decreases toward the front.

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 110°C to 130°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 and rear direction. In addition, the screw 231 is formed on the outer peripheral surface, a plurality of spiral pressure blades along the longitudinal direction. The screw 231 rotates in 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 on 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.

The rotating part 232 is installed at the end of the screw 231 to supply rotational force to the screw 231. The rotation unit 232 is not shown in the drawing, but is provided between the rotation unit and the end of the screw 231 and the rotation unit, and has 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 engaged with each other to reduce the rotational force of the rotating unit and transmit it to the screw 231.

The cutting unit 240 is installed on the frame 241 to be slidably installed in the frame 241 adjacent to the discharge port and in a direction crossing the discharge direction of the mixture, and cuts the mixture discharged through the discharge port. A cutting blade 242 provided with a cutting blade at one end so as to be able to be performed, and a cutting driving part 243 for reciprocating the cutting blade 242 are provided.

The frame 241 is installed between the discharge port of the housing 210 and the transfer unit 300, and is formed of a structure capable of supporting the cutting blade 242 and the cutting driving unit 243.

The cutting blade 242 has a predetermined left and right width and extends a predetermined length in the vertical direction. At this time, the cutting blade 242 is installed to be slidable in the vertical direction on the frame 241 on the upper side of the housing. The cutting blade 242 is formed with a sharp lower end and a cutting blade is provided. Here, the cutting blade 242 is preferably formed of a metallic material.

The cutting drive unit 243 is installed on the upper portion of the frame 241 to reciprocate the cutting blade 242 in the vertical direction, and an actuator may be applied. The cutting blade 242 reciprocates in the vertical direction by the cutting driving part 243 and cuts the mixture discharged through the discharge port of the housing 210.

Meanwhile, the cutting unit 240 may further include a support (not shown) installed on the frame 241 corresponding to the lower side of the discharge port of the housing 210 to support the mixture discharged from the housing 210. It is preferable that the support is installed on the frame 241 under the cutting blade 242.

The drying unit 250 is installed on the front surface of the cutting blade 242, and generates heat so that the cutting blade 242 is heated to dry the cut portion of the mixture when the cutting blade 242 cuts the mixture. It is installed on the front side of the heating member 251 and the cutting blade 242 at a position spaced apart from the heating member 251 toward the other end of the cutting blade 242, and heated by the heating member 251 A blowing member 252 for forcibly blowing the resulting air toward one end of the cutting blade 242 is provided.

The heating member 251 is installed on the front surface of the cutting blade 242, and a heating wire that generates heat by electricity applied from the outside is applied. The heating member 251 extends in the left and right directions with a length corresponding to the left and right width of the cutting blade 242. The cutting blade 242 is heated to a predetermined temperature by the heating member 251, and when cutting the mixture, the cutting surface of the mixture can be dried in a short time.

The blowing member 252 is installed on the front side of the cutting blade 242 on the upper side of the heating member 251 to forcibly blow air downward. Since the blowing member 252 is a blowing means such as a blowing fan generally used in the related art to forcibly blow air, a detailed description will be omitted. Since the air around the cutting blades 242 heated through the heating member 251 by the blowing member 252 is blown downward, that is, toward the mixture, the mixture can be dried again.

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

Meanwhile, in FIG. 2, a drying unit 250 according to another embodiment of the present invention is shown.

Elements having the same function as in the drawings shown above are denoted by the same reference numerals.

Referring to the drawings, the drying unit 250 is installed at a position spaced apart from the heating member 251 toward one end side of the cutting blade 242 and is forcedly blown by the blowing member 252. It includes a guide member 253 for guiding some of it toward the transfer unit 300.

The guide member 253 is formed to protrude forward on the front side of the cutting blade 242 at the lower side of the heating member 251, and is formed to be inclined so that one end adjacent to the cutting blade 242 is positioned above the other end. It is desirable. Since some of the air that has passed through the heating member 251 by the induction member 253 is supplied to the transfer unit 300, the mixture transferred to the transfer unit 300 can be dried again even if there is no separate drying means.

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 transfer unit 300 is applied with a conveyor that transfers the mixture.

The crushing unit 400 is installed under the other end of the transfer unit 300 to crush the mixture, that is, rice plastic pellets, which are transferred through the transfer unit 300 in a powder form. Although the crushing unit 400 is not shown in the drawing, it is installed under the other end of the transfer unit 300, and a case in which an inner space with an open top surface is formed so that a mixture, that is, rice plastic pellets, can be inserted, and inside the case. It includes a grinding blade that is rotatably installed, and a driving motor that rotates the grinding blade. Meanwhile, the crushing unit 400 is not limited to the illustrated example, and any crushing means capable of crushing the plastic rice pellets transported by the transport unit 300 may be applied.

Now, a detailed description of a method for manufacturing a rice plastic raw material using a manufacturing apparatus according to an embodiment of the present invention having the structure as described above is as follows. 3 shows a flow chart for a method of manufacturing a plastic raw material for rice of the present invention.

Referring to the drawings, the rice plastic raw material manufacturing method includes a mixture manufacturing step (S101), a pellet manufacturing step (S102), and a crushing step (S103).

The mixture preparation step (S101) is a step of preparing a mixture by mixing water with rice powder. Here, the mixture is prepared by mixing 30 to 40 parts by weight of the water based on 100 parts by weight of the rice powder.

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 the 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, 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, and 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.

In addition, rice powder may be a by-product generated after extraction of alcohol from rice. That is, the rice powder may be a powder obtained by extracting alcohol from rice, drying the remaining by-products, and crushing the dried by-products.

Meanwhile, the mixture may be prepared by mixing rice powder and water with a plasticizer.

Here, lactic acid may be applied as the plasticizer, 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. 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 regulator 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 development of harmful bacteria in the intestine when drinking it to improve the function of the intestine. It reacts with the starch of and controls the physical properties and does not affect the taste at the same time.

In addition, glucose may be applied as the plasticizer, 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. Glucose is present in large amounts in sweet fruits and is the most widely present 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 rice starch, so that the properties of plastic processed into rice can be controlled.

In addition, corn oil may be applied as the plasticizer, and 1 to 3 parts by weight of corn oil may be mixed with respect to 100 parts by weight of the rice powder to prepare a mixture. Corn oil is derived from the germ of corn seeds. 99% of refined corn oil is triglyceride, consisting of 83% of unsaturated fatty acids and 13% of saturated fatty acids, and 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.

In the pellet manufacturing step (S102), the mixture is pressurized under a predetermined temperature condition and a predetermined pressure condition using the extruder 200 to produce plastic pellets. The operator controls the heating unit and the pressing unit 230 of the extruder 200 so that rice plastic pellets can be manufactured by pressing the mixture at a temperature of 110° C. to 130° C. at a pressure of 400 psi to 600 psi.

The crushing step (S103) is a step of crushing the rice plastic pellets to prepare a rice plastic raw material. The rice plastic pellets extruded by the extruder 200 are transferred to the crushing unit 400 by the transfer unit 300, and the crushing unit 400 crushes the rice plastic pellets into predetermined particles to prepare a rice plastic raw material.

The method for manufacturing a raw material for rice plastic according to the present invention and the device for manufacturing the same can produce biodegradable plastics having excellent physical properties and stability through a simple process using rice, which is a biodegradable natural material, and can be decomposed by natural microorganisms during landfill and incineration. It can minimize environmental pollution such as soil and air from landfill and incineration.

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 the 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 interpreted in the widest scope consistent with the principles and novel features presented herein.

100: rice plastic raw material manufacturing equipment
200: extruder
210: housing
230: pressurization unit
231: screw
232: rotating part
240: cutting unit
241: frame
242: cutting blade
243: cutting drive
250: drying unit
251: heating member
252: blowing member
253: guide member
300: transfer unit
400: crushing part

Claims (9)

delete delete delete delete delete delete An extruder for producing rice plastic pellets by extruding a mixture of rice powder and water under a predetermined temperature condition;
A transfer unit for transferring the rice plastic pellets extruded by the extruder; And
A crushing unit for crushing the rice plastic pellets transported by the transfer unit to produce a rice plastic raw material; and,
The extruder
A housing in which an input space into which the mixture is injected is provided, and a discharge port through which the mixture in the input space is discharged is formed at a front end portion;
A heating unit that melts the mixture injected into the input space;
A pressing unit installed in the housing to pressurize the mixture in the input space and discharge the mixture to the discharge port;
A frame installed adjacent to the discharge port, and a cutting blade installed on the frame slidably in a direction crossing the discharge direction of the mixture, and having a cutting blade at one end to cut the mixture discharged through the discharge port And, a cutting unit provided with a cutting drive for reciprocating the cutting blade;
A drying unit installed on the cutting blade to dry the mixture discharged from the extruder,
The drying unit
A heating member installed on the front side of the cutting blade and generating heat so that the cutting blade is heated so as to dry the cut portion of the mixture when the cutting blade cuts the mixture; And
A blower member installed on the front side of the cutting blade at a position spaced apart from the heating member toward the other end of the cutting blade, and forcibly blowing air heated by the heating member toward one end of the cutting blade; And
At least one guide member installed at a position spaced apart from the heating member toward one end of the cutting blade to guide some of the hot air forcedly blown by the blowing member toward the transfer unit;
Rice plastic raw material manufacturing device.
delete delete

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