KR20130084189A - Bio based garbage bag and method for producing thereof - Google Patents

Abstract

PURPOSE: A bio base garbage bag is provided to by using the abridged transcript agricultural waste of the carbon neutrality [Carbon neutral] type porosity as the raw material of the bio base garbage bag the waste resources can be used and the manufacturing cost can be cut down. CONSTITUTION: A bio base garbage bag comprises: A synthetic resin 50-90 weight% more than one kind selected from the group consisting of the polyolefin based polymer about the pellet composition total 100 weight%, the polyester based polymer, and the polyamide group polymer and polyacrylate type polymer or 2 kinds. The compatibilizing agents 0.5-5 weight% giving compatibility between the synthetic resin and powdered abridged transcript agricultural waste. With the lubricant 0.5-3 weight% for plastic, and the oxidant 0.1-1 weight% for the plastic cracking. It is comprised of order to include the mixture containing the powdered abridged transcript agricultural waste as the residual quantity.

Description

Bio based Garbage Bag and Method for Producing Thereof}

The present invention relates to a bio-based garbage bag and a method for manufacturing the same, and more specifically, to utilize waste resources using porous herbal agricultural wastes classified as carbon neutral materials as biodegradable natural materials. The present invention relates to a bio-based garbage bag having suitable physical properties and degradability as a plastic and a method of manufacturing the same.

 Plastic materials are widely used in various molded products, packaging materials, industrial materials, consumer goods, etc. due to their excellent physical properties, various functions, and low prices. However, these products do not decompose naturally within a reasonable period of time, causing serious environmental pollution.

As a method for treating such plastic waste, conventional methods such as landfill, incineration, and recycling have been taken, but due to the problems associated with each of them, bioplastics that can be completely decomposed into water, carbon dioxide, and methane gas within months or years. Research is ongoing in a variety of ways. In some developed countries, the practical use of bioplastics has already been reached.

When bioplastics are classified in terms of degradability, biodegradable plastics in which plastics are decomposed by microorganisms, enzymes, and the like, and destruction of molecular chain bonds by photochemical and thermal reactions such as radiation from solar light and sunlight ( Photo-degradable plastics that break down plastics by chemical bond cleavage, oxidation-degradable plastics that break down plastics by oxidation under the influence of temperature, and hydrolysis Has been classified as hydrolytically-degradable plastics.

       According to the recent definition of bioplastics, bioplastics are divided into biodegradable plastics that are largely degraded within 6 months compared to cellulose and biobased plastics that overcome the shortcomings of existing biodegradable plastics and emphasize carbon dioxide reduction. Base plastic (in Japan, called biomass plastic) refers to plastic containing 15-25% or more of so-called biomass derived from plants such as corn, by using plant resources fixed in carbon by photosynthesis as raw materials. It has recently been attracting attention because it has the effect of suppressing the increase in the concentration of carbon dioxide in the atmosphere, can reduce the consumption of petroleum, a limited resource, and is decomposed by microorganisms after disposal. In particular, if plant biomass, which belongs to non-edible organic waste resources such as agricultural waste, industrial waste, and food plant by-products, which are difficult to use for food, is attracting attention as an eco-friendly carbon neutral biomass material, It is widely applied to. In particular, plant interior materials are applied to plant biomass up to 68% of the vehicle interior area, mainly in the US, Japan and Europe.

Starch is a natural material for producing biodegradable plastic compositions and is widely used because of its excellent degradability, but it is a raw material produced through a series of manufacturing processes. It is necessary to study how to use it as it is without denaturation treatment. In addition, the biodegradable polymer material manufactured using starch, etc., has a weak problem in terms of physical properties and strength and impact resistance, and consumes food resources.

It is an object of the present invention to utilize waste materials by using porous herbaceous agricultural wastes such as grain shells and grain beds, which are carbon-neutral materials, and bio-based garbage bags having suitable physical properties and oxidative biodegradation effects as plastic substitutes. And to provide a method for producing the same.

The bio-based garbage bag according to the present invention comprises one or two or more kinds of synthetic resins selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers, and polyacrylate-based polymers based on a total of 100% by weight. 90% by weight, 0.5-5% by weight of a compatibilizer which gives compatibility between the synthetic resin and powdered herbal based agricultural waste and inorganic fillers and heterogeneous synthetic resin, 0.5-3% by weight of plastic lubricant, 0.1-1% by weight of oxidizing agent for plastic decomposition And the remaining amount is characterized in that the powder (powder) made to include a blend containing herbal based agricultural waste.

In addition, the method for producing a bio-based garbage bag according to the present invention comprises a first step of forming a blend containing powdery herbal based agricultural waste; A second step of blending the blend containing the powdered herbal based agricultural waste with a synthetic resin, a compatibilizer for imparting compatibility between the synthetic resin and the powdered herbal based agricultural waste, a lubricant for plastic and an oxidizing agent for plastic decomposition; A third step of reacting and extruding the product of the second step with a single screw or twin screw extruder to obtain a bio-based pellet composition; And a fourth step of extruding the pellet composition in the form of a film in a film extruder, wherein the second step is based on 100% by weight of the total pellet composition, a polyolefin polymer, a polyester polymer, a polyamide polymer, and a polyacryl. One or two or more synthetic resins selected from the group consisting of the rate-based polymer is 50-90% by weight, 0.5-5% by weight of a compatibilizer for providing compatibility between the synthetic resin and powdery herbal based agricultural waste, 0.5-3% by weight, oxidizing agent for plastic decomposition, 0.1-1% by weight, characterized in that the blend containing the powdered herbaceous agricultural waste is formulated in the remaining amount.

Examples of the synthetic resin used in the present invention include polyolefins such as LDPE, HDPE, MDPE, LLDPE, VLDPE, PP, PVC, EVA, vinyl acetate (PVAc) and copolymers thereof, polyesters such as PET and PBT, Polyacrylates, such as polyamides (PA), such as NYLON-6, NYLON-66, and NYLON-11, PMMA, and an acrylic copolymer, are mentioned, The quantity of synthetic resin in the bio-base garbage bag composition of this invention is said composition. It is preferably used in an amount of 50-90% by weight based on 100% by weight in total. When used in an amount of less than 50% by weight, it is difficult to use as a product due to a sharp drop in dispersion and compatibility, and when used in an amount of more than 90% by weight, the economy is low because the resin content is excessive. More preferably, it is used in an amount of 60-85% by weight based on 100% by weight of the total garbage bag composition to maintain sufficient strength of the product condition.

The compatibilizer used in the present invention is a substance which gives compatibility by removing the releasability between the non-polar synthetic resin and the polar herbal agricultural waste, and examples thereof include glycidyl methacrylate, ethylene vinyl alcohol, Any one commonly used in the art including polyvinyl alcohol and ethylene vinyl acetate may be used without limitation. However, more preferably, a polyolefin-based polymer of Formula 1 or a polyolefin-derived polymer of Formula 2 may be used. Commercially available products include, for example, ADPOLY PH-200, EM-200, and SMS-554 (Honam Petrochemical Co., Ltd.). The compatibilizer is preferably used in an amount of 0.5-5% by weight based on 100% by weight of the total bioplastic composition of the present invention. When used in an amount of less than 0.5% by weight is insufficient compatibility may cause separation between layers, and when used in an amount of more than 5% by weight it is not possible to obtain an economic effect. More preferably in an amount of 0.5-3.0% by weight relative to the total weight of the composition.

Wherein R is H or CH ₃ Im

Wherein R is H or CH ₃ Im

The lubricant for plastics used in the present invention is added to perform a smooth extrusion operation at the same time to prevent thermal decomposition by reducing the frictional heat generated during the bonding or strengthening affinity and blending between the blend containing the herbal agricultural waste and the synthetic resin and extrusion, extrusion As these components are added, the mechanical properties are maintained similar to the base materials while providing smooth workability. The lubricant may be one or a mixture of two or more selected from the group consisting of stearic acid salts, palmitate salts and laurate salts, which are environmentally friendly natural products. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used. The lubricant is preferably used in an amount of 0.5-3% by weight based on 100% by weight of the total composition. When used in an amount less than 0.5% by weight, the effect as a sufficient lubricant cannot be obtained when molding the product, and when used in an amount exceeding 3% by weight, defects in the product may occur or carbides or flow-marks may occur when forming the product. This hinders the beautiful aesthetics and of course, no economic effect is obtained.

The oxidizing agent for plastic decomposition used in the present invention is a component added to break the polymer chain, and may be used without limitation as long as it is a oxidizing agent for plastic decomposition commonly used in the art. It is preferably used in an amount of 0.1-1% by weight relative to%. For example, Korean Patent No. 10-0641272 to the present applicant includes metal components such as iron (Fe), zinc (Zn), manganese (Mn) and titanium (Ti), which promote oxidation of a polymer as an oxidation promoter. In addition, the additive may be added to the composition as a metal itself, or may be added in the form of an organic complex combined with an organic compound. When such an oxidizing agent for decomposition is used in an amount of less than 0.1% by weight relative to 100% by weight of the composition, the degradation effect is insignificant, and when used in an amount of more than 1% by weight, economical efficiency is low.

Formulation containing herbal agricultural waste used in the present invention is a bran (or husk) of cereals, including corn, oats, rice, wheat, barley, rice straw, corn, barley, wheat, rapeseed, sunflower It means a blend containing porous by-products or mixtures thereof, except for grains or seeds obtained from herbal farm products such as bar of grains including bar and the like. 1 (a)-(c) is a picture of the rice husk obtained through the work of the milling, an enlarged view of the rice husk and a picture of the powder of rice husk, it can be confirmed that the porous from the enlarged view of FIG. In the present invention, powder particles as shown in Fig. 1 (c) are used. The blend containing the herbal agricultural wastes occupies the remaining amount excluding the resin, the compatibilizer, the lubricant and the inorganic filler in the bioplastic composition of the present invention. More preferably, the blend containing herbal based agricultural wastes relative to the total weight of the composition is used in an amount of 25-50% by weight. The blend containing the herbal agricultural waste comprises 5-20 parts by weight of the inorganic filler and 0.5-2 parts by weight of the surface coating agent, based on 100 parts by weight of the herbal agricultural waste, the inorganic filler is impregnated with the agricultural filler It is more preferable that it is a powdered coating material.

The inorganic filler is a material deposited in the pores of the powdery herbal agricultural waste, and consists of calcium carbonate, glass fiber, talc, mica, silica, clay powder, wollastonite, talc, kaolin powder, silica, mica, kaolin and titanium dioxide. One or a mixture of two or more selected from the group may be used. In order to improve the physical properties of the plastic, the inorganic filler is used in the amount of 1-50% of the nano-size powder in a total of 100%. More preferably, those containing 80-100 nm in size in amounts of 10-30% are used. In addition, the inorganic filler is preferably used in an amount of 5-20 parts by weight based on 100 parts by weight of the herbal based agricultural waste. When used in an amount less than 5 parts by weight, the amount of impregnated in porous herbal agricultural wastes is small, so that the surface is not sufficiently modified and air and moisture remain in the interior of the process, resulting in water and gas in the process of dispersion and compatibility. When used in an amount of more than 20 parts by weight, it is deposited on herbal agricultural wastes and the remaining amount is excessive, which may cause a decrease in the mechanical properties of the final compound.

The surface coating agent is a material capable of coating the surface of the herbal agricultural waste to prevent water evaporation, one or two or more mixtures selected from the group consisting of stearates, palmitates and laurates may be used. Can be. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used. The surface coating agent is preferably used in an amount of 0.5-2 parts by weight based on 100 parts by weight of the herbal based agricultural waste. If the amount is less than 0.5 parts by weight, the coating may not be sufficient to prevent the reabsorption of moisture on the surface of the powder. If the amount is more than 2 parts by weight, the slip between the polymer compound and the natural product in the final melt extrusion step may be prevented. Deteriorates mechanical properties by inducing properties.

 In addition, a variety of well-known components that can be used as additives for plastic production can be added in a predetermined amount to improve processability, product stability, product performance, and the like. For example, a surface treating agent may be added in a predetermined amount to enhance bonding strength and reduce repulsion, and a stabilizer may be added to maintain the physical and chemical properties of the resin during the life of the plastic product so as not to decompose. It can be added in an amount of. In the present invention, linear organic thermal stabilizers and antioxidants (irganox 1010 or 1076 series) having a molecular weight of less than 2,000 are added in predetermined amounts in order to prevent deformation and carbonization of the compound to maintain mechanical properties and processing stability. It is also desirable to.

Hereinafter, a method of producing the bioplastic of the present invention will be described through a process of forming a blend containing the powdery herbal based agricultural waste, blending the formed agricultural waste blend with other components, and extruding the final blend. Except for the parts described below, the overall manufacturing method is in accordance with conventional methods.

First, the first step is to form a blend containing the powdered herbal based agricultural waste. Herbal agricultural waste contained in the blend is a powdery porous material, and in the present invention, it is more preferable to use lyophilized at a temperature of minus 5-0 and then ground using a ball mill, an air jet mill or the like according to a conventional method. Do. Powder-based porous filler deposited on the pores by mixing 5-20 parts by weight of the inorganic filler and 0.5-2 parts by weight of the surface coating agent to 100 parts by weight of the agricultural wastes prepared by using a blender. Herbal agricultural waste coating will be formed. As such, by forming a coating on which the inorganic material is deposited in the pores, reabsorption of moisture can be prevented, and compatibility with the resin can be given in the second step blending process. The temperature of the blender is then slowly increased from 70 to 110 over 15-30 minutes. If the temperature rises sharply, the coating may evaporate before the surface is coated, and the coating may not proceed smoothly. If the compound is mixed for more than 30 minutes, carbonization may occur. In addition, in order to easily deposit the inorganic filler in the pores of the herbal agricultural waste, it is preferable to use the one containing the nano-size powder in an amount of 1-50% to 100% of the inorganic filler. More preferably, those containing 80-100 sized powders in amounts of 10-30% are used. The core technology of the first step is to deposit porous pores with inorganic fillers to suppress the generation of gas or water during the melt extrusion process, and to prevent moisture or reabsorption by coating natural powder with nano-minerals deposited on the pores. have.

The second step is a step of blending the blend of agricultural waste formed in the first step, the compatibilizer, the lubricant for the plastic and the oxidizing agent for plastic decomposition to give compatibility between the synthetic resin, the synthetic resin and powdered herbal based agricultural waste. to be. 50% to 90% by weight of one or two or more synthetic resins selected from the group consisting of polyolefin polymers, polyester polymers, polyamide polymers and polyacrylate polymers, based on 100% by weight of the composition, 0.5-5% by weight of the compatibilizer to provide compatibility between the powdered herbal agricultural waste, 0.5-3% by weight of the lubricant for plastics and 0.1-1% by weight of the oxidizing agent for plastic decomposition containing powdered herbal agricultural wastes The blend is blended as the remainder. The blender is then operated for 15-35 minutes in the 120-220 range. If the mixing time is less than 15 minutes, it is difficult to mix completely, and if it exceeds 35 minutes, oxidation may occur and yellowing may occur. Most preferably, the molding temperature of the blender is approximately 30 higher than the melting temperature of the base resin. Through this process, as shown in Figure 2, to form a powder particle of the form impregnated with a specific material in the pores.

The third step is melt extruding the blend produced in the second step with a single screw or twin screw extruder. The compound of the second step is reacted and extruded by a single screw or twin screw extruder according to a conventional method, and then the compound discharged from the die is cooled by a conveyor system or a die-face hot-cutting method to pellet the composition. To manufacture. In addition, it is possible to operate a water resorption prevention system using a dehumidifying constant temperature cycle.

The fourth step is to produce a bio-based garbage bag by extruding the prepared pellet composition in the form of a film in a film extruder.

At this time, in order to give a color to the bio-based trash bag to be manufactured can be extruded after adding the dye or pigment or a master batch containing the same to the hopper, the content can be added by adjusting appropriately according to the desired color implementation. have.

The bio-based garbage bag according to the present invention has a large amount of natural ingredients having excellent biodegradation properties including herbal agricultural wastes, and thus has a high decomposition rate, and in particular, physical properties such as initial elongation and tensile strength of the manufactured garbage bags. Or excellent properties. The trash bags thus prepared can be used as packaging films for waste disposal.

Bio-based garbage bags produced in the manufacturing process is decomposed into the accumulation of light, heat, mechanical energy, etc. in the natural world through the initial oxidation process of the oxidizing agent for plastic decomposition, the molecular weight is reduced while the decomposition process. Resins whose molecular weight has been reduced to less than 1,000 lose their plastic function. The resin whose molecular weight has collapsed to 500 or less is converted into a nutrient source of a natural microorganism whose terminal portion contains a carbonyl group by an oxidation reaction, and is reduced to nature in the shortest time. The resin having a molecular weight of 500 or less becomes a food source for various microorganisms and insects present in the environment and can be processed in an ecological cycle. Inorganic fillers, which were originally part of the soil as natural minerals in nature, are decomposed and decomposed and then released from the base metal, are released into nature, and reduced to soil. In addition, herbaceous agricultural waste is released from the mid-stage base material after the start of collapse and is reduced to the natural ecological cycle. As such, the bio-based garbage bag of the present invention may be oxidized and biodegraded through separate landfilling, incineration, etc. after its use, and may be recovered as a resource by applying heat.

      In addition, a variety of well-known components that can be used as additives for plastic production to improve processability, product stability, product performance, etc. may be added in a predetermined amount to prepare bio-based garbage bags. For example, a surface treating agent may be added in a predetermined amount to enhance bonding strength and reduce repulsion, and a stabilizer may be added to maintain the physical and chemical properties of the resin during the life of the plastic product so as not to decompose. It can be added in an amount of. In the present invention, linear organic thermal stabilizers and antioxidants (irganox 1010 or 1076 series) having a molecular weight of less than 2,000 are added in predetermined amounts in order to prevent deformation and carbonization of the compound to maintain mechanical properties and processing stability. It is also desirable to.

The bio-based garbage bag of the present invention and a method for manufacturing the same are used to produce porous herbaceous agricultural wastes, which are a kind of waste resources that are not disposed of and consume the entire amount of wastes, which are not widely used as starches, which are widely used as natural materials for producing plastics. By using it as an alternative raw material, waste resources can be utilized and manufacturing costs can be reduced. Bio-based garbage bags manufactured using this material are also highly utilized due to their excellent physical properties and decomposition efficiency.

Each of Fig.1 (a)-(c) is the photograph of the rice husk obtained through the cutting operation, the enlarged view of the rice husk, and the powdery rice husk photograph.
2 is an enlarged view of a coating formed according to the first step of the present invention.
Figure 3 is a graph showing the change in tensile strength according to the UV irradiation time (irradiation) change of Preparation Example 1-4 and Comparative Preparation Example 1.
Figure 4 is a graph showing the change in tensile strength according to the UV irradiation time change of Preparation Example 5-8 and Comparative Preparation Example 2.
5 is a graph showing the change in elongation rate according to the UV irradiation time change of Preparation Example 5-8 and Comparative Preparation Example 2.

Hereinafter, preferred embodiments and preparations of the present invention will be described. The following examples and preparations are intended to illustrate the invention and do not limit the scope of the invention.

Example 1 Preparation of Formulations Containing Herbal Agricultural Wastes

The rice husk was lyophilized at a temperature of minus 2, and then pulverized three times with a ball mill, and then the powder of 150-200 mesh was pulverized with an air jet mill to obtain rice husk powder having a particle size of 6.5. 15 parts by weight of calcium carbonate and 10% calcium carbonate containing 100% calcium carbonate in 100% calcium carbonate, based on 100 parts by weight of rice hull powder prepared in MICRO-JET MILL SYSTEM (manufactured by Hankuk Powder Machinery Co., Ltd.) 1 part by weight was kneaded rapidly while increasing slowly from 70 to 110 for 20 minutes. As shown in Figure 2 to produce a rice husk coating impregnated with calcium carbonate in the pores.

Example 2 Preparation of Formulations Containing Herbal Agricultural Waste

Except for the use of talc instead of calcium carbonate in Example 1 to produce the chaff coating impregnated with talc according to the same method.

Preparation Example 1-4 and Comparative Production Example 1-60 Preparation of Garbage Bag Specimen

Using LDPE, the chaff coating of Example 1, and an oxidizing agent for decomposing plastics such as iron and zinc, 60 bags having a composition as shown in Table 1 with respect to a total of 100% by weight of the garbage bag composition were prepared according to a conventional method. Each specimen was cut to 10025 mm.

Comparative Preparation Example 1 Production Example 1 Production Example 2 Production Example 3 Production Example 4 LDPE (% by weight) 100 94 89 74 64 Example 1 (% by weight) - 5 10 25 35 Oxidizer (wt%) - One One One One

Test Example  1-60 Trash Bag Of Specimen The tensile strength ( tensile strength ) Measure

In order to evaluate the degree of decomposition according to the UV irradiation of Preparation Example 1-4 and Comparative Preparation Example 1 containing the rice hull coating, every 24 hours until the UV irradiation time 0-240 hours at 60 temperature according to a conventional method The tensile strength of each rubbish bag specimen was measured every hour, and the results are shown in Table 2 below, and the results are shown graphically in FIG. 3.

Comparative Preparation Example 1 Production Example 1 Production Example 2 Production Example 3 Production Example 4 0 (hours) 16.907 15.108 15.071 14.56 14.057 24 16.701 15.053 14.778 14.035 13.853 48 16.901 14.903 13.737 13.027 12.946 72 16.732 14.615 13.967 12.953 12.05 96 16.708 13.055 12.092 10.951 9.873 120 16.333 12.875 10.381 9.533 7.254 144 14.136 9.916 9.521 8.875 6.472 168 14.275 9.316 9.025 7.273 4.768 192 14.407 9.063 8.164 6.321 - 216 14.909 8.543 7.034 5.426 - 240 14.587 7.364 6.08 4.934 -

As can be seen from Table 2 and FIG. 3, Comparative Preparation Example 1, which does not use Example 1, has almost no change in tensile strength due to UV irradiation, whereas in Preparation Example 1-4 using Example 1 In this case, the tensile strength decreased from 72 to 120 hours. This shows that the decomposition degree of the garbage bag using Example 1 is excellent.

Manufacturing example  5-8 and Comparative Manufacturing Example  2-60 Manufacture of Trash Bag Specimens

Using LDPE and the chaff coating of Example 1, 60 envelopes having a composition as shown in Table 3 were prepared for 100% by weight of the composition according to a conventional method, and each specimen for each envelope was cut to 10025.

Comparative Production Example 2 Production Example 5 Production Example 6 Production Example 7 Production Example 8 LDPE (% by weight) 100 95 90 75 65 Example 1 (% by weight) - 5 10 25 35

Test Example  2-60 Trash Bag Of Specimen The tensile strength ( tensile strength ) And Elongation rate ( elongation ) Measure

In order to evaluate the decomposition degree according to the UV irradiation of Preparation Example 5-8 and Comparative Preparation Example 2, each garbage bag specimen every 24 hours until the UV irradiation time at 58 temperature in accordance with a conventional method 0-240 hours Tensile strength and elongation rate of was measured, and the results are shown in Tables 4 and 5, respectively, and the results are shown graphically in FIGS. 4 and 5.

Comparative Production Example 2 Production Example 5 Production Example 6 Production Example 7 Production Example 8 0 (hours) 16.907 15.108 15.071 14.56 14.057 24 16.701 15.053 14.778 14.035 13.853 48 16.901 14.903 13.737 13.027 12.946 72 16.732 14.615 13.967 12.953 12.05 96 16.708 13.055 12.092 10.951 9.873 120 16.333 12.875 10.381 9.533 7.254 144 14.136 9.916 9.521 8.875 6.472 168 14.275 9.316 9.025 7.273 4.768 192 14.407 9.063 8.164 6.321 - 216 14.909 8.543 7.034 5.426 - 240 14.587 7.364 6.08 4.934 -

Comparative Production Example 2 Production Example 5 Production Example 6 Production Example 7 Production Example 8 0 (hours) 300 300 300 300 300 24 300 300 300 300 300 48 300 300 300 300 300 72 300 129.547 286.643 300 247.762 96 300 59.664 277.637 300 167.588 120 300 41.845 127.268 268.268 46.13 144 194.665 19.241 33.664 144.385 21.463 168 186.053 9.38 40.658 94.06 7.574 192 209.595 9.227 18.8789 113.101 4.629 216 237.144 6.06 10.733 85.393 2.893 240 237.095 13.081 27.914 201.338 7.817

As can be seen from Table 4 and FIG. 4, Comparative Preparation Example 2, which does not use Example 1, has almost no change in tensile strength due to UV irradiation, whereas in Preparation Example 5-8 using Example 1 In this case, the tensile strength decreased from 48 to 72 hours. In addition, as can be seen from Table 5 and Figure 5, the elongation rate also showed a tendency to decrease from the time of 48-72 hours in the case of Preparation Example 5-8 using Example 1. From this, it can be confirmed again that the garbage bag using Example 1 was excellent in the degree of decomposition.

Manufacturing example  9-Preparation of Biobase Garbage Bags

As it was confirmed that the resolution of the plastic composition containing the chaff blend in the preparation example is excellent, 21.5% by weight of low-density polyethylene (LDPE), adpoly (Adpoly, product of Honam Petrochemical Co., Ltd.) 1.5 to 100% by weight of the total composition A blend containing the herbal based agricultural waste prepared in Example 1 was prepared as the weight%, 2.0% by weight calcium stearic acid, 0.5% by weight oxidizing agent for plastic decomposition and the balance. The prepared ingredients were placed in a kneader mixer and then operated for 30 minutes in the range of 120-220. The compound is then reacted and extruded in a single or twin screw extruder according to a conventional method, and then the combined molding discharged from the die is cooled by a conveyor system to produce a bio base pellet composition, and then the bio base in a conventional film extruder. Trash bags were prepared.

Manufacturing example  10-Preparation of Biobase Garbage Bags

According to the same method, except that Example 2 was used instead of Example 1 as a blend containing herbal based agricultural waste in Preparation Example 9, a bio-based garbage bag of the present invention was prepared.

Manufacturing example  11-Preparation of Biobase Garbage Bags

According to the same method, except that zinc stearic acid is used instead of calcium stearic acid in Preparation Example 9, a bio-based garbage bag of the present invention was prepared.

Claims (16)

50 to 90% by weight of one or two or more kinds of synthetic resins selected from the group consisting of polyolefin polymers, polyester polymers, polyamide polymers and polyacrylate polymers, based on 100% by weight of the pellet composition; 0.5-5% by weight of a compatibilizer, 0.5-3% by weight of lubricant for plastics, 0.1-1% by weight of oxidizing agent for decomposing plastics, and a residual amount of powdered herbal-based agricultural wastes. Bio-based garbage bags, characterized in that made to include. The bio-based garbage bag according to claim 1, wherein the herbaceous agricultural waste is a porous grain shell, a grain bar or a mixture thereof. According to claim 1, wherein the blend containing the herbal agricultural waste is bio-based, characterized in that it comprises 5-20 parts by weight of inorganic fillers and 0.5-2 parts by weight of agricultural waste surface coating agent with respect to 100 parts by weight of the herbal based agricultural waste Base garbage bag. The method of claim 3, wherein the inorganic filler is calcium carbonate, glass fiber, talc, mica, silica, clay powder, wollastonite, talc, kaolin powder, silica containing nano-sized powder in an amount of 1-50% of the total 100% Bio-based garbage bags, characterized in that one or two or more selected from the group consisting of mica, kaolin and titanium dioxide. The bio-based garbage bag of claim 3 or 4, wherein the blend containing the herbal agricultural waste is a coating material in which the inorganic filler is impregnated with the herbal agricultural waste. The bio-based garbage bag of claim 3, wherein the coating agent is stearic acid salt. The bio-based garbage bag of claim 1, wherein the lubricant is one or a mixture of two or more selected from the group consisting of stearate, palmitate and laurate. The bio-based garbage bag of claim 1, wherein the compatibilizer is a polyolefin-based or polyolefin-derived polymer. A first step of forming a blend containing powdery herbal based agricultural waste;
A second step of blending the blend containing the powdered herbal based agricultural waste with a synthetic resin, a compatibilizer for imparting compatibility between the synthetic resin and the powdered herbal based agricultural waste, a lubricant for plastic and an oxidizing agent for plastic decomposition;
A third step of reaction extruding the product of the second step by a single screw or twin screw extruder; And
The third step of the product is made of a fourth step of extruding the bio-based garbage bag with a film extruder,
In the second step, with respect to 100% by weight in total, one or two or more synthetic resins selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers and polyacrylate-based polymers 50-90 weight %, 0.5-5% by weight of a compatibilizer for providing compatibility between the synthetic resin and powdered herbal based agricultural waste, 0.5-3% by weight for a plastic lubricant, 0.1-1% by weight of an oxidizing agent for plastic decomposition, powdered herbal based agricultural products A method for producing a bio-based garbage bag, characterized in that the compound containing waste is blended in the remaining amount. 10. The method of claim 9, wherein the herbaceous agricultural wastes are porous grain shells, grain bars or a mixture thereof. 10. The method of claim 9, wherein the blend of the first step is mixed with 5-20 parts by weight of the inorganic filler with respect to 100 parts by weight of the powdery herbal based agricultural waste, and then kneading at high speed to impregnate the inorganic filler in the pores of the herbal based agricultural waste. Making a step; And adding 0.5-2 parts by weight of a coating agent based on 100 parts by weight of powdery herbal based agricultural waste to the impregnation to coat the surface of the impregnation. 12. The method of claim 11, wherein the powdered herbal based agricultural waste is pulverized after freeze drying. According to claim 11 or 12, wherein the inorganic filler is calcium carbonate, glass fiber, talc, mica, silica, clay powder, wollastonite, talc, containing nano-sized powder in an amount of 1-50% of the total 100% A method for producing a bio-based garbage bag, characterized in that the mixture of one or more selected from the group consisting of kaolin powder, silica, mica, kaolin and titanium dioxide. 13. The method of claim 11 or 12, wherein the coating agent is a stearic acid salt. 10. The method of claim 9, wherein the lubricant is one or a mixture of two or more selected from the group consisting of stearate, palmitate and laurate. 10. The method of claim 9, wherein the compatibilizer is a polyolefin-based or polyolefin-derived polymer.

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