WO2018221861A1 - Oxo-biodegradable transparent bio-wrap film using biomass and biodegradable catalyst - Google Patents

Abstract

The present invention relates to a transparent bio-wrap film and, more particularly, to an oxo-biodegradable transparent bio-wrap film composition using a biomass and a biodegradable catalyst, which is intended to achieve a harmony of excellent transparency, flexibility, and mechanical properties while retaining the functions of carbon reduction, biodegradability, and freshness maintenance by adding an epoxidized soybean oil, which is a carbon-neutral type plant-based plasticizer, a biodegradable catalyst, an ingredient for freshness maintenance, etc. to a vinyl chloride resin, which is a main material, to prepare a raw material composition for food wrapping materials, and molding the composition into films by extrusion; a transparent bio-wrap film prepared from the composition by extrusion molding; and a method for manufacturing the same film.

Description

Oxidative Biodegradable Transparent Biolab Film Using Biomass and Biodegradation Catalyst

The present invention relates to a transparent bio wrap film, and more particularly, to a food packaging material by adding a carbon neutral type plant plasticizer, an epoxidized soybean oil, a biodegradation catalyst, and a component for maintaining freshness to a vinyl chloride resin, which is a main raw material. Oxidative and biodegradable transparent materials using biomass and biodegradation catalysts are prepared by producing a raw material composition and extruding it in the form of a film to achieve excellent transparency, flexibility, and mechanical properties while maintaining carbon reduction, biodegradation properties, and freshness retention functions. A bio wrap film composition, a transparent bio wrap film prepared by extrusion molding such a composition, and a method for producing the same.

As we begin to realize the importance of the environment, it is essential to develop technologies that do not pollute the environment. Plastic, which is a necessity in our lives, has not become rotten and has become the culprit of environmental pollution. Recently, the development of plastic technology that decomposes in nature is actively being made, and the demand is exploding.

Bio plastics are largely divided into bio degradable plastics, Oxo-biodegradable plastics and bio based plastics, of which bio-degradable additives are further included in bio-based plastics. The oxidized biodegradable plastic is a plastic containing oxidative biodegradable additives in addition to a plastic containing more than 25% of biomass derived from plants such as corn, and its raw material is produced by photosynthesis. in need. Therefore, it has the effect of suppressing carbon emissions, and can reduce the consumption of petroleum, a limited resource, and after being disposed of, it is decomposed by microorganisms, and in particular, it has been spotlighted as an environmentally friendly material in terms of improving properties and maintaining price competitiveness.

Among bio plastics that are attracting attention as eco-friendly materials, bio-base plastics are rapidly industrializing because they can overcome premature biodegradation problems, physical property degradation, price competitiveness, and difficulty of recycling, which have been pointed out as disadvantages of existing biodegradable plastics. Plant Bottle, which started in Japan, became a topic of PET bottles using about 30% of bioethanol extracted from sugarcane to existing PET raw materials.Coca-Cola developed and commercialized 'Plant Bottle', a bottle of Bio PET beverage. Since 2009, the company has sold more than 20 billion units in more than 20 countries around the world, and is currently researching and developing products to significantly increase its biomass content. Samsung Electronics sells products using bioplastics containing sugar cane as a packaging material for TV accessories such as remote controls and manuals, and eco-friendly boxes made from 100% recycled paper as accessories for premium smart TVs and UHD TVs. It uses vegetable soybean oil ink which has obtained environmentally friendly certification. In addition, the use of bioplastics is increasing in food containers, automobiles, and construction materials, including portable cups, baby sets, bio vinyl, food containers, agricultural mulching films, and various disposable products. In recent years, countries around the world are operating bio-plastic identification labeling system and giving certification labels along with regulations on the use of non-degradable plastics. In order to protect the environment, the UAE began enacting legislation in 2009 and declared regulations on disposable products and trash bags in January 2012, and since January 1, 2014, Oxo- Only biodegradable packaging materials and products can be imported and distributed in the UAE region, and the world is struggling to respond to them by prohibiting the use of non-degradable plastics.

Due to the global market demand for eco-friendliness and the speed of corporate R & D, bioplastics accounted for 1 to 5% of the global plastics market at the beginning of the century, but after 2016 it will grow into an industry that occupies more than 10%. It is expected to be. However, bioplastics are still limited in scope. Due to the cost increase, it is about 2 to 3 times more expensive than existing plastic products, and lower physical properties than existing synthetic plastics, so there remains a problem to be solved for use in electronic products and industrial products.

Recently, the product has been developed by using carbon-reducing plant biomass, general-purpose plastic, biodegradable resin, biodegradable resin, biodegradation accelerator, oxidizing agent, and compatibilizer in plastics, which is effective in improving physical properties, but has low plasticity. When manufactured with a disadvantage that the physical properties of the produced film falls.

The present invention is to provide an oxidative biodegradable transparent bio-wrap film that can harmoniously implement a carbon reduction function, biodegradation characteristics, freshness maintaining function, transparency, flexibility and mechanical properties.

In order to solve the above technical problem, the present invention is 100 parts by weight of a thermoplastic resin as a main raw material; 27 to 51 parts by weight of an ester plasticizer as a primary plasticizer; 6 to 12 parts by weight of a carbon neutral plant plasticizer as a secondary plasticizer; 1-2 parts by weight of a polyhydric alcohol fatty acid ester as an antifogging agent; 0.1 to 2 parts by weight of a calcium-zinc-based organic composite thermal stabilizer as a thermal stabilizer; 0.1 to 2 parts by weight of oxidative biodegradation pellets containing biomass as an oxidative biodegradation catalyst; And 0.001 to 0.02 parts by weight of a metal-coated zeolite powder as an additive for maintaining freshness, wherein the thermoplastic resin is polyvinyl chloride (PVC), and the primary plasticizer is glyceryl laurate diacetate. ) And diisononyl hexahydrophthalate, the secondary plasticizer is epoxidized soybean oil, the antifogging agent is polyglycerol monooleate, and the heat stabilizer is A fatty acid mixture of calcium and zinc having at least one fatty acid selected from the group consisting of lauric acid, oleic acid, benzoic acid, behenic acid, stearic acid and ricinolic acid, wherein the oxidative biodegradation catalyst is biomass, binder resin, wax, aliphatic poly Consisting of ester, sorbitol, calcium carbonate and stearic acid, the fresh The additive for maintaining the present invention is a titanium, aluminum or tin-coated zeolite powder, characterized in that used as a raw material of food packaging, provides an oxidative biodegradable transparent bio wrap film composition using a biomass and biodegradation catalyst.

In another aspect of the present invention, there is provided an oxidative biodegradable transparent bio wrap film using a biomass and a biodegradation catalyst prepared by extrusion molding the composition as described above.

Specifically, the tensile strength of 2.2 to 4.2 kg _f / ㎜, elongation of 262 to 402%, maximum load elongation of 259 to 396%, haze 3, characterized in that the thickness of 10 to 15 ㎛, biomass and biodegradation It provides an oxidative biodegradable transparent bio wrap film using a catalyst.

In addition, in another aspect of the present invention, the method for producing an oxidative biodegradable transparent bio-wrap film as described above, after each raw material component is added to the supermixer while maintaining the conditions of 1,400 rpm and 140 ± 5 ℃ The mixture was prepared by mixing for 12 minutes, and then extruded the compound while maintaining a screw temperature of 180 to 200 ° C. and a T-DIE temperature of 200 to 205 ° C. using an extrusion machine having a die diameter of 90 mm and L / D 28. Next, the cooling rolls 1, 2, and 3 for cooling to pass through maintaining at 20 to 26 ℃ after passing through the winder roll, characterized in that for producing a film having a thickness of 12 ㎛, using the biomass and biodegradation catalyst It provides a method for producing a biodegradable transparent bio wrap film.

The oxidative biodegradable composition according to the present invention has an advantage of high carbon reduction efficiency due to high content of biomass-derived organic carbon.

The oxidative biodegradable composition according to the present invention is excellent in mechanical properties such as tensile strength, elongation and maximum load elongation, and thus can be used in various soft and hard products that require flexibility, such as packaging films, packaging materials, and biofilaments for 3D printers. .

In addition, the oxidative biodegradable wrap film according to the present invention is excellent in freshness retention function and can be particularly suitably used as a food packaging material.

In addition, the oxidative biodegradable wrap film according to the present invention may be used in various product families requiring transparency by having high transparency.

In addition, the oxidative biodegradable wrap film according to the present invention to solve the environmental problem by oxidative biodegradation at the time of disposal.

1 is a schematic diagram of a production process of an oxidative biodegradable transparent bio wrap film composition and a food packaging wrap film prepared therefrom according to the present invention.

2, 3 and 4 are graphs showing the tensile strength, the elongation and the maximum load elongation of the control and the oxidative biodegradable transparent bio wrap film to which the oxidative biodegradation catalyst is not added.

5 is a diagram showing standard guides related to exposure and testing by oxidative and biodegradation.

6 and 7 are graphs showing the average biodegradability of cellulose and oxidative biodegradable transparent bio wrap film.

8 and 9 are flow charts for a method of six regulated substances in accordance with the European RoHS standard.

Oxidative biodegradable transparent bio wrap film composition according to the present invention,

100 parts by weight of a thermoplastic resin as a main raw material;

27 to 51 parts by weight of an ester plasticizer as a primary plasticizer;

6 to 12 parts by weight of a carbon neutral plant plasticizer as a secondary plasticizer;

1-2 parts by weight of a polyhydric alcohol fatty acid ester as an antifogging agent;

0.1 to 2 parts by weight of a calcium-zinc-based organic composite thermal stabilizer as a thermal stabilizer;

0.1 to 2 parts by weight of oxidative biodegradation pellets containing biomass as an oxidative biodegradation catalyst; And

And 0.001 to 0.02 parts by weight of a metal-coated zeolite powder as an additive for maintaining freshness.

The thermoplastic resin is polyvinyl chloride (PVC),

The primary plasticizer is a mixture of glyceryl laurate diacetate and diisononyl hexahydrophthalate,

The secondary plasticizer is epoxidized soybean oil,

The antifogging agent is polyglycerol monooleate,

The heat stabilizer is a fatty acid mixture of calcium and zinc having at least one fatty acid selected from the group consisting of lauric acid, oleic acid, benzoic acid, behenic acid, stearic acid and ricinolic acid,

The oxidative biodegradation catalyst is composed of biomass, binder resin, wax, aliphatic polyester, sorbitol, calcium carbonate and stearic acid,

The additive for maintaining the freshness is a zeolite powder coated with titanium, aluminum or tin,

It is used as a raw material of food packaging material.

The vinyl chloride resin, which is the main ingredient of the biolab film composition according to the present invention, may play a role in determining the characteristics of various extruded and injection molded articles produced from the oxidative biodegradable biolab film composition. According to the characteristics of the product to be produced, the degree of polymerization (DP), which is a major factor in determining the physical properties of the resin, should be determined first.The lower the degree of polymerization, the higher the processability, but the lower the properties such as mechanical strength, while the degree of polymerization is high. The higher the physical properties, the lower the workability. Accordingly, for the production of soft and hard products requiring flexibility such as films, packaging materials, and wires, it may be advantageous for the vinyl chloride resin to have a polymerization degree of 950 to 1050, and the polymerization degree vinyl chloride resin may have transparency and tensile strength of the product. And it can act advantageously to improve the physical properties such as anti-fog. At the same time, the rapid melting rate and plasticizer absorption rate of the polyvinyl chloride resin promotes gelation, shortens the mixing time of the raw materials, and improves the ease of processing with excellent work stability. On the other hand, the resin may be advantageous to have a suitable porous structure for the absorption of additives such as plasticizers, thermal stabilizers that are inevitably added for the improvement of physical properties, impart functionality. It is preferable to use a resin having a narrow particle size distribution range and an apparent specific gravity suitable for the particle size in order to facilitate the blending of raw materials and to improve the extrusion amount per unit time. If the particle size distribution range is widened, the mixing state between the raw materials is not good, and the processing is difficult, and if the size of the particle size is too small, it prevents the resin from melting due to friction and thermal decomposition between particles, thereby preventing normal physical properties. Accordingly, it may be advantageous to have an appropriate particle size, particle size distribution range and apparent specific gravity, and preferably, vinyl chloride resin may have an apparent specific gravity of 0.51 to 0.59 g / cc in a particle size distribution range of 300 to 350 μm, but is not limited thereto. no.

In the biowrap film composition according to the present invention, a predetermined plasticizer is used to promote plasticization of the raw material resin and to impart performance such as ductility and adhesive force to the film produced from the composition.

The primary plasticizer is an ester plasticizer, a mixture of glyceryl laurate diacetate and diisononyl hexahydrophthalate (e.g., a weight ratio of 3: 7 to 7: 3, more specifically 5 Mixed at a weight ratio of 5). In addition, the ester plasticizer may be added 27 to 51 parts by weight based on 100 parts by weight of vinyl chloride resin.

As the secondary plasticizer, epoxidized soybean oil is used as a plant-derived plasticizer. Epoxidized soybean oil is included as a carbon neutral biomass in the bio wrap film composition of the present invention to increase the carbon reduction function. In addition, the cost is lower than that of a conventionally used plasticizer, which may have an advantageous effect on cost reduction, and also plays a part as a heat stabilizer, thereby maximizing the heat stabilizer effect with the heat stabilizer described later. However, when excessive use of epoxidized soybean oil is bleeded out of the product, a problem occurs that the surface of the film becomes white when stored in an environment of high temperature and high humidity or low temperature. Accordingly, epoxidized soybean oil needs to be added in an appropriate ratio, and preferably 6 to 12 parts by weight based on 100 parts by weight of vinyl chloride resin.

The antifogging agent is for preventing the formation of water droplets formed due to the condensation of steam on the film surface, and is preferably a polyhydric alcohol fatty acid ester such as monoglycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester and polyoxyethylene fatty acid ester. Polyglycerol monooleate is used. The antifogging agent may cause a problem of deterioration in transparency when added in excess, and preferably 1 to 2 parts by weight may be added to 100 parts by weight of vinyl chloride resin.

* Thermal stabilizer is a component for preventing thermal decomposition of vinyl chloride resin under high temperature processing conditions and suppressing generation of hydrogen chloride by heating. Non-lead thermal stabilizer, especially calcium-zinc organic composite thermal stabilizer, is used. The calcium-zinc organic composite thermal stabilizer can be a fatty acid mixture of calcium and zinc having at least one fatty acid selected from the group consisting of lauric acid, oleic acid, benzoic acid, behenic acid, stearic acid and ricinolic acid, preferably chlorinated 0.1 to 2 parts by weight may be added based on 100 parts by weight of the vinyl resin.

The oxidative biodegradation catalyst is a component for shortening the period of complete decomposition of plastics to 1 to 5 years or controlling the period of final biodegradation. In the present invention, biomass, binder resin, wax, aliphatic polyester, sorbitol, calcium carbonate and stearic acid Use what consists of: In this case, the biomass may be a by-product obtained from the skin of a grain or a herbaceous agricultural product or a mixture thereof, and modified starch may be used. The binder resin may be polypropylene or polyethylene, preferably polyethylene. The wax can be paraffin, beeswax, candelilla, PE and PP wax. As the aliphatic polyester, polybutylene succinic acid may be preferably used. In addition, the sorbitol may serve as a starch plasticizer, and calcium carbonate may serve as an inorganic filler. In total, a mixture of the seven components is used as the oxidative biodegradation catalyst in the present invention to control the biodegradation period of the product comprising the composition and the film according to the present invention. Meanwhile, the seven components are more than 25% biomass, less than 50% binder resin, less than 10% wax, less than 10% aliphatic polyester, less than 3% sorbitol, less than 10% calcium carbonate and less than 2% stearic acid. Such as 50% biomass, 35% binder resin, 5% wax, 4% aliphatic polyester, 1% sorbitol, 4% calcium carbonate and 1% stearic acid.

The additive for maintaining freshness is a component added to prevent color change, wilting, rancidity, etc. of the food to be packaged and to maintain its freshness. In the present invention, a metal-coated zeolite powder, preferably titanium, aluminum or tin is coated. Zeolite powder is used. As described above, the metal coated on the surface of the zeolite is combined with oxygen in the food packaging material and is converted into titanium oxide to remove oxygen in the food packaging material, thereby greatly enhancing the antioxidant function. Metals such as titanium may be coated on the zeolite surface by dissolving a water-soluble metal-containing compound in water and then impregnating the zeolite. On the other hand, the additive for maintaining freshness is preferably added in an amount of 0.001 to 0.02 parts by weight based on 100 parts by weight of vinyl chloride resin in terms of maintaining freshness and economical efficiency at the same time.

The oxidative biodegradable transparent bio wrap film composition according to the present invention may be obtained as a thin plate-like film through a series of extrusion and cooling processes. The mechanical properties set in advance in the composition step should be able to be realized in the film, and thus the thickness of the film needs to be set. The thickness of the oxidative biodegradable transparent bio wrap film according to the present invention may preferably be 10 to 15 μm, more preferably 11 to 13 μm. Excellent physical properties suitable for films can be seen in the thickness range of 11 to 13 μm.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. However, these examples are only for the understanding of the present invention, and the scope of the present invention in any sense is not limited to these examples.

Example

(1) Preparation of Oxidative Biodegradable Transparent Biolab Film Composition

Polyvinyl chloride (P-1000, Hanwha Chemical), Primary plasticizer (A-5004, Aesthetic), Epoxidized soybean oil (ESO, Sajo) as secondary plasticizer, Polyhydric alcohol fatty acid ester (ALMAX- 9000, Ilsin Wells), calcium-zinc-based organic composite thermal stabilizer (LTX, KD Chem), oxidative biodegradation catalyst (TGR, biomaterial) and zeolite powder coated with titanium (Ti) as an additive for maintaining freshness After mixing to the composition (unit: kg) presented in the supermixer, and maintaining a temperature of 140 ± 5 ℃ was mixed for 12 minutes at 1,400 rpm to prepare a composition having transparency. A control was prepared under the same conditions as above except that an oxidative biodegradation catalyst was used.

TABLE 1

(2) Preparation of Oxidative Biodegradable Transparent Biolab Film (for Packaging)

The screw temperature is maintained at 180 to 200 ° C. using an extrusion machine (# 90-28, Power INC, Cheongju, Korea) with a die diameter of 90 mm and L / D of 28, and T-DIE (T-DIE, Cn tech industrial company, Hwaseong, Korea) extruded the control and oxidative biodegradable transparent bio wrap film composition prepared as described above while maintaining the temperature of 200 to 205 ℃. Then, the cooling rolls 1, 2, and 3 were passed while maintaining the temperature at 20 to 26 ° C. for cooling, and a film having a thickness of 12 μm was produced through the winder roll.

The physical properties of the examples and the control prepared as described above were measured by the following method, and the results were analyzed.

Experimental Example

(1) Content of organic carbon derived from biomass

In accordance with ASTM D6866 (European recognized method name CEN16137), a standard for measuring the content of biomass derived organic carbon in the product, the test was conducted with 25 g of the oxidative biodegradable film sample obtained from the example by the US BETA Institute.

The test results show that the organic carbon content in the film is 35%, which is higher than the United States Department of Agriculture certification of 25%.

(2) Tensile strength, elongation and maximum load elongation

Mechanical control using a universal testing machine (WL2100C UTM, Withlab Corporation, Gunpo, Korea) by cutting the oxidative biodegradable film sample obtained from the control and the Example without adding the oxidative biodegradation catalyst to 5 × 150 mm according to ASTM D3039 standard (Tensile strength, elongation and maximum load elongation) were measured, and the results are shown in Table 2 below. In addition, graphs showing the tensile strength, the elongation, and the maximum load elongation of the control and the oxidative biodegradable film are shown in FIGS. 2, 3, and 4.

TABLE 2

As a result of the test, both the control and the oxidative biodegradable film showed high tensile strength and elongation in the MD direction, and the oxidative biodegradable film showed lower tensile strength and elongation than the control in the TD direction, but the significant difference was more than 90%. It can be seen. On the other hand, in the MD direction, the oxidative biodegradable film showed higher tensile strength and elongation than the control, which was superior to the control due to the increased strength of the oxidative biodegradable film.

The maximum load elongation of the oxidative biodegradable film was higher than that of the control in the MD direction, and it was slightly lower than the control in the TD direction, but there was no significant difference when the difference was more than 90%. Judging by the level.

(3) biodegradability test

In order to evaluate the oxidative biodegradability of the standard cellulose and the oxidative biodegradable film prepared from the above example, a test was conducted according to ASTM D6954-04. Degradability evaluation is divided into three stages as shown in Figure 5, in the first step after the chemical decomposition by UVA 340 nm 100 hours treatment by ASTM D5208-01 CYCLE A method, the biodegradability of the UV treated sample KSM-3100- It measured by the method of 1. The results of 45 days of biodegradability test by the ASTM D6954-04 method are shown in Table 3 below, and the average biodegradability of the standard and biodegradable film is shown in FIGS. 6 and 7.

TABLE 3

As a result of the test, the average biodegradation calculated by the carbon dioxide emission amount of the standard cellulose was 76.1%, and the average biodegradation calculated by the carbon dioxide emission amount of the biodegradable film prepared according to the present invention was 46.7%. In particular, from 16 days after the biodegradability of the biodegradable film produced by the present invention was confirmed to be decomposed to almost constant biodegradation. In addition, the biodegradation was 61.4% compared to the standard.

(4) Film Stability as Food Packaging Material

The oxidative biodegradable film prepared from the example was measured according to the synthetic resin method among the standards and specifications of utensils, containers, and packaging in accordance with KFDA, and the results are shown in Table 4 below.

TABLE 4

As a result, Pb, Cd, Hg, Cr ⁶⁺ in the material was found to be less than 10 mg / kg, which is the detection limit of the measuring equipment, and meet the standards of 100 or less in total. In addition, heavy metals, potassium permanganate consumption and total elution were found to meet the standard. Accordingly, it can be seen that the biodegradable film according to the present invention is very suitable for the container packaging standard for food.

(5) Hazardous Substance Analysis

In accordance with the RoHS Directive, tests of six regulated materials for oxidative biodegradable films prepared from Examples were conducted in accordance with IEC 62321, and the measured results are shown in Table 5 below. 8 and 9 show flowcharts of the method for the regulated substance.

TABLE 5

(* 1: IEC 62321-5 Ed. 1.0: 2013 (AAS), * 2: IEC 62321-4 Ed. 1.0: 2013 (AAS), * 3: IEC 62321 Ed. 1.0: 2008 (UV / Vis), * 4: IEC 62321 Ed.1.0: 2008 (GC / MS))

As a result of the test, the oxidative biodegradable film prepared from the examples was found to be non-detection for all six hazardous substances, and accordingly it was found to comply with the European RoHS standard.

(6) transparency

Transparency evaluation measured haze according to ASTM D1003 standard test method. Haze is a phenomenon in which when light passes through a transparent material, light is diffused depending on the material's intrinsic properties, in addition to reflection and absorption depending on the type of material, resulting in an opaque cloudy appearance. The degree of diffusion of light incident on such a transparent object is called haze, and the diffusion transmittance (Td) and total light transmittance (Tt) are measured and expressed as the ratio (Td / Tt × 100). It is a very excellent material, and if it is 3 or less, it can be used as an optical material.

As a result of the test, it was found that the haze of the biodegradable film was 3, which was excellent in transparency.

Review the results

In the present invention, a oxidative biodegradable transparent bio wrap film was newly developed using a plant derived plasticizer, a biodegradation catalyst, and the like.

The results of comparing the tensile strength, elongation and maximum load elongation by types according to the presence or absence of the oxidative biodegradation catalyst were similar.

Carbon-neutral plant biomass has attracted attention because it does not increase the total amount of carbon dioxide in the earth. The carbon-neutral transparent biowrap film has a biomass content of 35%, which is higher than the USDA standard of 25%. In addition, the test results of heavy metal detection of the transparent biolab film were in compliance with the European RoHS standard, and the biodegradability was measured for 45 days and showed 61.4% biodegradation compared to cellulose, which was also in compliance with the standards of ASTM D 6494 and UAE S 5009.

Furthermore, as a result of further experiments on maintaining freshness, the transparent bio-wrap film of the present invention is effectively suppressed the color change, browning and wilting of various packaged fruits and vegetables as compared to the case of not using the metal-coated zeolite powder. It was confirmed that it was very suitable for maintenance.

Oxidative biodegradable transparent bio wrap film using biomass and biodegradation catalyst according to the present invention has excellent biodegradability and mechanical properties, organic carbon content meets the standards of bio-based plastics such as USDA, freshness of packaged foods It is also advantageous to maintain.

The oxidative biodegradable transparent bio wrap film of the present invention may be utilized in various products such as eco-friendly packaging including food packaging materials, biofilament for 3D printer, and its business ripple effect is also expected to be great.

Claims (4)

1. 100 parts by weight of a thermoplastic resin as a main raw material;

   39 parts by weight of an ester plasticizer as a primary plasticizer;

   9 parts by weight of a carbon neutral plant plasticizer as a secondary plasticizer;

   1.5 parts by weight of a polyhydric alcohol fatty acid ester as an antifogging agent;

   1 part by weight of a calcium-zinc-based organic composite thermal stabilizer as a thermal stabilizer;

   1 part by weight of oxidative biodegradation pellets containing biomass as an oxidative biodegradation catalyst; And

   And 0.001 parts by weight of a metal-coated zeolite powder as an additive for maintaining freshness.

   The thermoplastic resin is polyvinyl chloride (PVC) having a polymerization degree of 950 to 1050, a particle size distribution of 300 to 350 μm, and a specific gravity of 0.51 to 0.59 g / cc,

   The primary plasticizer is a mixture of glyceryl laurate diacetate and diisononyl hexahydrophthalate mixed at a weight ratio of 5: 5,

   The secondary plasticizer is epoxidized soybean oil,

   The antifogging agent is polyglycerol monooleate,

   The heat stabilizer is a fatty acid mixture of calcium and zinc having at least one fatty acid selected from the group consisting of lauric acid, oleic acid, benzoic acid, behenic acid, stearic acid and ricinolic acid,

   The oxidative biodegradation catalyst is composed of biomass, binder resin, wax, aliphatic polyester, sorbitol, calcium carbonate and stearic acid,

   The additive for maintaining the freshness is a zeolite powder coated on the surface of titanium,

   It is used as a raw material of food packaging material,

   The oxidative biodegradable transparent biolab film prepared by extrusion molding a composition comprising a biomass and a biodegradation catalyst is 61.4% of the biodegradability measured by the method of KSM-3100-1 for 45 days compared to the cellulose powder which is a standard substance. doing,

   Oxidative biodegradable transparent bio wrap film composition using biomass and biodegradation catalyst.
2. A composition according to claim 1 prepared by extrusion molding,

   Oxidative biodegradable transparent bio wrap film using biomass and biodegradation catalyst.
3. The method of claim 2,

   Characterized in that the tensile strength is 2.2 to 4.2 kg _f / ㎜, elongation is 262 to 402%, maximum load elongation is 259 to 396%, haze is 3, thickness is 10 to 15 ㎛,

   Oxidative biodegradable transparent bio wrap film using biomass and biodegradation catalyst.
4. As a method for producing an oxidative biodegradable transparent bio wrap film according to claim 2,

   After each raw ingredient is added to the supermixer, the mixture is prepared by mixing for 12 minutes while maintaining the conditions of 1,400 rpm and 140 ± 5 ° C.

   The compound was extruded using an extrusion machine having a die diameter of 90 mm and L / D 28 while maintaining the screw temperature of 180 to 200 ° C and the T-DIE temperature of 200 to 205 ° C.

   After passing through the cooling rolls 1, 2, 3 while maintaining at 20 to 26 ℃ for cooling, characterized in that for producing a film having a thickness of 12 ㎛ through the winder roll,

   Method for producing an oxidative biodegradable transparent bio wrap film using biomass and biodegradation catalyst.

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