KR100566065B1 - Process of plastic Re-use - Google Patents

Abstract

The present invention relates to a recycled plastic pellets using waste plastics and a method for manufacturing the same, which will be described in more detail, a collection step of collecting, purchasing, etc. waste plastics or EPR items for which recycling is mandatory. A), a classification step (B) for classifying the collected waste plastics by criteria of type, color, etc., a first hazardous material measurement step (C) for measuring and evaluating harmful substances in the sorted waste plastics, and a first step. Crushing and shredding the waste plastic after the measurement of harmful substances (D), drying step (E) for washing and drying the pulverized waste plastic, and first extrusion step (F) to discolor the washed waste plastic And, a second extrusion step (G) for coloring the decolorized waste plastic to the color to be produced and reinforcing the properties, and retesting the physical properties of the waste plastic colored in various colors and reinforced with physical properties. It includes a second physical property test step (H) to evaluate, a product production step (I) for producing a product using waste plastics after the second physical property test, and a packaging step (J) for packaging the produced product. It is possible to prevent various water pollution and soil pollution caused by landfills, as well as to prevent landfilling of landfills by recycling plastic wastes generated from household wastes and industrial wastes of general households as raw materials of new plastic products. The present invention relates to a recycled plastic pellet using waste plastic and a method of manufacturing the same, which can solve the difficulties of the selection and replace the enormous amount of plastic raw materials imported for the production of plastic products.

       Waste plastic, discoloration, coloring, recycling

Description

Recycled plastic pellets using waste plastics and its manufacturing method {Process of plastic Re-use}

       1 is a flow chart of the waste plastic recycling method of the present invention

       2 is a first test report of harmful substances measurement of the present invention

 3 is the secondary physical property test evaluation test report of the present invention

        The present invention relates to a recycled plastic pellets using waste plastics and a method for manufacturing the same, which will be described in more detail, a collection step of collecting, purchasing, etc. waste plastics or EPR items for which recycling is mandatory. A), a classification step (B) for classifying the collected waste plastics by criteria of type, color, etc., a first hazardous material measurement step (C) for measuring and evaluating harmful substances in the sorted waste plastics, and a first step. Crushing and shredding the waste plastic after the measurement of harmful substances (D), drying step (E) for washing and drying the pulverized waste plastic, and first extrusion step (F) to discolor the washed waste plastic And, a second extrusion step (G) for coloring the decolorized waste plastic to the color to be produced and reinforcing the properties, and retesting the physical properties of the waste plastic colored in various colors and reinforced with physical properties. It includes a second physical property test step (H) to evaluate, a product production step (I) for producing a product using waste plastics after the second physical property test, and a packaging step (J) for packaging the produced product. It is possible to prevent various water pollution and soil pollution caused by landfills, as well as to prevent landfilling of landfills by recycling plastic wastes generated from household wastes and industrial wastes of general households as raw materials of new plastic products. The present invention relates to a recycled plastic pellet using waste plastic and a method of manufacturing the same, which can solve the difficulties of the selection and replace the enormous amount of plastic raw materials imported for the production of plastic products.

         The materials used by humans for a long time were mainly stone, bronze, iron, etc., but in modern times, they began to use ceramic materials, natural organic materials, and plastics in addition to metal materials. Products made from natural materials that were used in the past are far behind in the process of cutting, trimming, cutting, grinding and using most of the labor and time, ie they have to be used up during processing.

         Plastics initially appeared as substitutes for metals, wood, glass, ceramics, leathers, etc., but they have light weight, toughness, corrosion resistance, colorability, and mass production potential. As an indispensable material in the field of construction, construction and other fields, it has secured a place as a new material instead of a substitute.

         Plastic is a material that can be formed by heating, pressurization, or both, or is a generic term for molded products using these materials, and has a high molecular weight and uses the fluidity during the manufacturing process to make a desired shape.

         The etymology, called the first plastic, was generally called synthetic resin because the phenol formalin resin, invented by L. Bakland in 1909, was similar in appearance to resin and meant "suitable for molding." It comes from the Greek "plastikos".

        In Korea, the bakelite plant made in Japan in 1930 and celluloid processing in the form of home-made industries were the beginnings of the industry, but at a very low level.In the 1950s, Busan's cosmetics company, Lac Hee Chemical, introduced polystyrene injection machines for the first time, cosmetic containers and toothbrushes. The plastic industry was formed while producing lamps. Since the completion of the construction of Korea Plastic in 1967 and the construction of Ulsan Petrochemical Complex in 1972, the plastic era began in earnest. In Korea, with the development of the petrochemical industry, with the global trend, the production is increasing at a considerable rate every year, and the output is large enough to be included in the world's five largest producing countries.

        As described above, plastics are utilized in various fields due to the ease of molding, but there are also serious problems related to waste plastics disposal that are used and discarded as many applications.

        Korea's interest and legal response to plastic waste, which started to occur with rapid industrial development, began with the establishment of the Korea Resources Recycling Corporation in 1980 under the enactment of the Synthetic Resin Waste Treatment Business Act in 1979. At the end of 1992, the enactment of the "Act on Resource Conservation and Recycling Promotion" and the Prime Minister's Decree of 1993 aimed to reduce the generation of sources.

        The amount of waste plastic generated is not so simple because it is a function of domestic real demand, or the period of use or recovery for each item and use of each plastic is different. According to statistics of 'National Waste Generation and Disposal (Ministry of Environment, 1997)', in 1996, 88.1% of total waste plastics were landfilled and incinerated at 10.6%, and only 1.4% were recycled. It is still insignificant.

        In addition, plastic waste generated from industrial waste, including household waste in general households, has caused serious problems in its disposal. Plastic waste is collected separately, but it is almost impossible to recycle it properly. The primary waste plastics are usually about 70% plastic, about 20% paper and about 10% wood and other impurities. Such plastic waste has been selected and landfilled so far.

 However, it is difficult to select such landfills today, and even if landfills are found and landfilled, there are problems that cause various environmental problems including water pollution.

Therefore, the object of the present invention is to devise to improve the various conventional problems as described above,

  By collecting and discoloring the waste plastics, coloring them according to the color of the product to be produced and recycling them in the production of plastic products, it prevents water pollution and soil pollution caused by the landfilling of plastic wastes, and according to the selection of landfill sites. It is an object of the present invention to provide a recycled plastic pellet using waste plastic and a method of manufacturing the same, which can bring about the effect of saving foreign currency by replacing a huge amount of plastic raw materials imported for the production of plastic products.

       The present invention relates to a recycled plastic pellets using waste plastics and a method for manufacturing the same, which will be described in more detail, a collection step of collecting, purchasing, etc. waste plastics or EPR items for which recycling is mandatory. A), a classification step (B) for classifying the collected waste plastics by criteria of type, color, etc., a first hazardous material measurement step (C) for measuring and evaluating harmful substances in the sorted waste plastics, and a first step. Crushing and shredding the waste plastic after the measurement of harmful substances (D), drying step (E) for washing and drying the pulverized waste plastic, and first extrusion step (F) to discolor the washed waste plastic And, a second extrusion step (G) for coloring the decolorized waste plastic to the color to be produced and reinforcing the properties, and retesting the physical properties of the waste plastic colored in various colors and reinforced with physical properties. It includes a second physical property test step (H) to evaluate, a product production step (I) for producing a product using waste plastics after the second physical property test, and a packaging step (J) for packaging the produced product. It is possible to prevent various water pollution and soil pollution caused by landfills, as well as to prevent landfilling of landfills by recycling plastic wastes generated from household wastes and industrial wastes of general households as raw materials of new plastic products. The present invention relates to a recycled plastic pellet using waste plastic and a method of manufacturing the same, which can solve the difficulties of the selection and replace the enormous amount of plastic raw materials imported for the production of plastic products.

      When described in more detail through the accompanying drawings and embodiments of the present invention will be described.

      1 is a flow chart of the waste plastic recycling method of the present invention,

     First, the collection step (A),

Collecting and purchasing EPR items that are obligatory to recycle waste plastic or recycling.In the case of plastics, EPP items are composite PP, PE compound, ABS, PVC, engineering plastics, thermoplastic resin, etc. There is a waste plastics such as collection or purchase is collected by this method.

      The classification step (B) is a step of classifying based on the type and color according to the chemical properties of the collected waste plastics. The material and color used as the classification criteria are visually selected, and the composite PP, PE compound, ABS, After classifying by materials such as PVC, engineering plastics, thermoplastics, and other recyclable synthetic resins, they are secondly classified based on the color of each material.

      The first hazardous substance measurement step (C),

      As a step of measuring and evaluating harmful substances in the sorted waste plastics, request a test from the Korea Industrial Standards Certification (KS) institution or Korea Chemical Testing Institute, and test and evaluate their physical properties. Cd, Hg, Cr + 6, PBB, PBDE) Evaluate whether it corresponds to the requirements of the environmental regulation that is prohibited to use or the requirements of the expanded producer responsible recycling system, and use waste plastics that meet the requirements as raw materials. In the following table, the requirements of the expanded producer liability recycling system and the standards by company are summarized as follows.

   Table 1 shows the hazardous substance regulations (WEEE, ROHS) deadlines and requirements.

Table 1.Hazardous Substances Limitation and Requirements

regulation Announcement Fermentation Regulation content Requirements WEEE 2003.2 2005.8 Recycling and Disposal of Producers of Waste Electronic Products ※ 2007.01 Recycle Improved recovery and recycling rate Eco-friendly design and recycling technology ROHS 2003.2 2006.7 Prohibit the use of hazardous substances in products (Pb, Cd, Hg, Cr + 6, PBB, PBDE Alternative material, alternative technology, test certification, harmful substance FREE information, test analysis

                     Table 2 shows the regulated concentration (ppm) for each set maker

division ROHS related Samsung LG Electronics SONY Matusushita range density CD All materials 100 ppm 5 10 5 75 Pb All materials 1000 ppm 100 100 100 100 Hg All materials 1000 ppm 800 100 - 100 Cr + 6 All materials 1000 ppm 800 100 - 100 PBB / PBDE All materials 1000 ppm 100 100 - 0.1wt%

       Compared with the environmental regulations, the requirements of the expanded producer liability recycling system and the standard standards by company, the "primary hazardous substance measurement results" of the waste plastics of the present invention are summarized as follows.

   Table 3. Results of Primary Physical Property Test Evaluation

Sample No Pb CD Hg CrVI PBBs PBDEs unit One 58.92 6.75 N.D N.D N.D 30.48 mg / kg Detecticr Limit <5 <2 <5 <1 <1 <1 -

       As described above, the results of the first hazardous substance measurement were found to be in compliance with the environmental regulations, the requirements of the expanded producer liability recycling system, and the standard standards by company (see FIG. 2).

        The crushing step (D) is a step of crushing and crushing the waste plastic after the first hazardous substance measurement, the crushing size is appropriately crushed to about 1mm ~ 10mm or 1mm ~ 15mm depending on the size of the injection hole of the extrusion machine.

       Drying step (E) is a step of washing and drying the pulverized waste plastic,

The pulverized and crushed waste plastics are washed to remove impurities and foreign substances, and dried to undergo the first extrusion step.

        The washing method is possible to wash both pure water and submerged in water, and to remove foreign substances and harmful substances, it is also possible to mix and wash detergents such as sodium phosphate and sodium phosphate with water and shake them.

       Drying method can be both a dry drying method and a spin-drying dehydration method that is dried while rotating in a container after washing.The waste plastic dried by heat-drying or rotating separation method is 5kg ~ of phosphorus pentoxide white powder. It is also possible to mix with 10 kg, put in a certain amount of container in a well-ventilated place at regular intervals, and dry to absorb moisture.

       The first extrusion step (F) is a step for decolorizing the washed waste plastics and removing environmentally harmful substances, dropping step (F1), decolorizing step (F2), extrusion step (F3), cooling step (F4), It consists of the process of simple packaging step (F5),

       Dropping step (F1) is a step of inserting the waste plastic of 1mm ~ 50mm size dried in the drying step (E) to the extruder,

       The decolorizing step (F2) is a step of adding an additive which decolorizes color in order to decolorize the waste plastic, and mixes titanium oxide (T1O2), titanium oxide II, and titanium oxide III in an appropriate amount, and then adds the mixed additive. Is added to the waste plastic dried about 0.5% to 20% to decolorize.

       Extrusion step (F3) is a step for smoothing the action of the waste plastics and additives, and extruding the discolored waste plastics to a constant size and length,

       Extrude for 30 seconds to 3 minutes at 150 ℃ ~ 270 ℃, during extrusion, the diameter of the waste plastic is extruded to Φ 2mm ~ 5mm, length (L) 15mm ~ 70mm.

       Cooling step (F4), the step of cooling the waste plastic extruded in the extrusion step (F3), can be used for both air-cooled cooling and water-cooled cooling, cooling for about 1 to 5 minutes.

       The simple packaging step (F5) is a step of simply packing to send the waste plastic extruded to a diameter Φ2mm ~ 5mm, length (L) 15mm ~ 70mm to the second extrusion step (G), and to wrap the waste plastic by weight unit Pack in 25kg and 500kg units.

        The second extrusion step (G) is a step of coloring the waste plastic decolorized through the first extrusion step (F) in various colors and reinforcing physical properties,

       It consists of the process of pellet dropping step (G1), coloring and physical property reinforcing step (G2), extrusion step (G3), cooling step (G4), classification storage step (G5),

        Pellet dropping step (G1) is a step of inserting the waste plastic decolorized through the first extrusion step (F) into the extruder,

        Coloring and physical property reinforcing step (G2), when applying the pellet dropping step (G1), to color the waste plastic to produce, and to add a color additive and a physical property reinforcement to reinforce the physical properties,

       In order to color with the color to be produced, color pigments, which are color additives corresponding to the color of the product to be produced, are inserted into the waste plastic and colored.

       By mixing the basic three color pigments (Copred), light blue (yellow), and yellow (yellow) within 1% ~ 10% to adjust a variety of different colors.

       In addition, for reinforcing the properties, the property reinforcing additives are inserted. The types, compositions, and main functions of the reinforcing material additives are summarized as follows.

 Table 4. Kinds, Compositions and Main Functions of Reinforcing Material Additives

Type of Filling Material Furtherance main function Type of Filling Material Furtherance main function Talc MgO Cost Reduction High Stiffness Dimensional Stability Calcium carbonate Calcium Carbonate Surface Modifier High gloss, high specific gravity, wear resistance Fiberglass / Glass Beads S1O2 CaO Ha2O MgO High Stiffness Dimensional Stability Heat Resistance Insulation Resistance Wallasto Night S1O2 CaO FeO High Stiffness Dimensional Stability Mica SiO2 Al2O3 MgO FeO Dimensional stability kaoline Cray S1O2 Al2O3 TiO2 Shockproof Chemical Resistance Barium sulfate Barium sulfate High gloss high specific gravity

     The above-mentioned physical property reinforcing additives are used by adjusting (increasing and decreasing) the above-mentioned material reinforcing additives within the range of about 1% to 10% according to the standard properties of the product.

     Waste plastics reinforced with physical property additives have improved mechanical strength, electrical properties, excellent chemical resistance, high crystallinity, rigidity, heat resistance, scratch resistance, environmental resistance, etc. It has physical properties that correspond to its physical properties.

        Extrusion step (G3) is a step for smoothing the action of the colorant and the physical reinforcing additives to the decolored waste plastics, as a step for extruding to a certain size and length,

       Extrude for 30 seconds to 3 minutes at 150 ℃ ~ 270 ℃, during extrusion, the diameter of the waste plastic is extruded to 15 ~ 50mm in the length of 2mm ~ 5.0mm.

        Cooling step (G4) is a step of cooling the waste plastic extruded in the extrusion step (G3), both air-cooled cooling and water-cooled cooling is possible, it is cooled for about 1 to 5 minutes.

        The classification storage step (G5) is a step of classifying and storing by type for the secondary physical property test of the waste plastic extruded to a diameter of 2mm ~ 5.0mm length 15 ~ 50mm.

        The second physical property test step (H) is a step of testing and evaluating the physical properties of waste plastics colored in various colors and reinforced with physical properties.

    Request the test to KKS or Korea Chemical Testing Institute to test and evaluate the physical properties.The results of the primary physical test evaluation are summarized as follows.

Table 5. Result of secondary physical property test evaluation

Property item Test Methods unit standard Test result liquidity ASTM D1238 g / 10min 6-12 11.6 Impact strength ASTM D256 kg.cm/cm Min 5.5 7.2 Heat deflection temperature ASTM D648 ℃ Min 70 82.9 The tensile strength ASTM D638 kg / cm2 Min 220 294 Elongation ASTM D638 % Min 25 52.3 Flexural strength ASTM D790 kg / cm2 Min 320 434 Flexural modulus ASTM D790 kg / cm2 Min 17000 23.505 Ash content ASTM D2548 % 18-22 20.1 Water content Karl-Fisher % Mix 0.06 0.03 importance ASTM D792 -

       As shown in the results of the secondary physical property test evaluation as described above, each item of the physical properties is excellent, and when produced as a product, it was shown to have excellent physical properties corresponding to the physical properties before recycling (see Fig. 3).

        The product production step (I) is a step of producing a product using waste plastics that have undergone secondary physical property tests. To produce.

        The packaging step (J) is a step of packaging the produced product,

        It is a packing step to prevent damage and deterioration of the produced product and to add a desire for purchase of the product.

  As described above, although the present invention has been described with reference to the above embodiments, it is not necessarily limited thereto, and various modifications may be made without departing from the scope and spirit of the present invention.

       Referring to the effects of the above-described configuration and operation in detail as follows.

The waste plastic recycling method of the present invention does not landfill plastic wastes generated from industrial wastes, including household household waste, and recycles them as raw materials of new plastic products, thereby preventing various water and soil pollution caused by landfills. It solves the difficulties of selecting landfills and saves foreign currency by substituting huge amounts of plastic raw materials imported for the production of plastic products.

Claims (4)

         In the manufacturing method of recycled plastic pellets using waste plastic,         A collection step (A) for collecting and purchasing composite PP, PE compound, ABS, PVC, engineering plastics and thermoplastic resins, which are EPR items,         A classification step (B) of classifying the collected waste plastics by type and color;        A first hazardous substance measurement step (C) of measuring and evaluating hazardous substances in the sorted waste plastic,         A crushing step (D) of crushing the waste plastic after the first harmful substance measurement to 1mm ~ 15mm,         The waste plastics are mixed with water and mixed with detergents such as sodium phosphate and sodium phosphate, and then washed.The drying step is carried out in a bag with 5kg ~ 10㎏ of Phosphrous Pentoside white powder to absorb moisture and dry. (E) and,         First extrusion step (F) to decolorize the washed waste plastics and remove harmful substances,         A second extrusion step (G) for coloring the waste plastic decolorized through the first extrusion step (F) with various colors and reinforcing properties;        Second property test step (H) for testing and evaluating the physical properties of waste plastics colored in various colors and reinforced with physical properties,        A product production step (I) of producing the product according to the design drawings of the product to be produced by using the waste plastic after the second physical property test,   A method for producing recycled plastic pellets using waste plastics, comprising: a packaging step (J) for preventing damage and alteration of the produced product and adding a desire for purchase of the product.      The method of claim 1, wherein the first extrusion step (F),      Dropping step (F1) for inserting the waste plastic into the extruder,      Bleaching step (F2) to decolorize by adding an additive of titanium oxide (T1O2), titanium oxide II, and titanium oxide III to waste plastic, which is dried to 0.5% to 20% of dried plastics;      Extrusion for 30 seconds to 3 minutes at 150 ℃ ~ 270 ℃, during extrusion, the diameter of the waste plastic is extruding to the diameter of Φ 2mm ~ 5mm, length (L) 15mm ~ 70mm (F3),      Cooling step (F4) for cooling the extruded waste plastic for 1 to 5 minutes,      Method for producing recycled plastic pellets using waste plastic, characterized in that consisting of a simple packaging step (F5) for packaging the cooled waste plastic.       The method of claim 2, wherein the secondary extrusion step (F),      Pellet dropping step (G1) for inserting the waste plastic decolorized through the first extrusion step (F) into the extruder,      Colors of various pigments are mixed and adjusted within 1% to 10% of colored pigments, Cored, Light Blue, and Yellow, and talc, glass fiber, glass beads, mica, carbonic acid Coloring and physical property reinforcing step (G2) to reinforce physical properties by adjusting (increasing and decreasing) calcium, wollastonite, kaolin, and barium sulfate within the range of about 1% to 10% according to the product's standard properties,     Extrusion for 30 seconds to 3 minutes at 150 ℃ ~ 270 ℃, the diameter of the waste plastic extrusion step (G3) of 2mm ~ 5.0mm length 15 ~ 50mm,      Cooling step (G4) for cooling the extruded waste plastic for 1 to 5 minutes,     Method for producing recycled plastic pellets, characterized in that consisting of a classification and storage step (G5) for classifying and storing the cooled waste plastic for each material type.    According to the manufacturing method of recycled plastic pellets using the waste plastic of claim 1,        A collection step (A) for collecting and purchasing composite PP, PE compound, ABS, PVC, engineering plastics and thermoplastic resins, which are EPR items,         A classification step (B) of classifying the collected waste plastics by type and color;        A first hazardous substance measurement step (C) of measuring and evaluating hazardous substances in the sorted waste plastic,         A crushing step (D) of crushing the waste plastic after the first harmful substance measurement to 1mm ~ 15mm,         The waste plastics are mixed with water and mixed with detergents such as sodium phosphate and sodium phosphate, and then washed.The drying step is carried out in a bag with 5kg ~ 10㎏ of Phosphrous Pentoside white powder to absorb moisture and dry. (E) and,         First extrusion step (F) to decolorize the washed waste plastics and remove harmful substances,         A second extrusion step (G) for coloring the waste plastic decolorized through the first extrusion step (F) with various colors and reinforcing properties;        Second property test step (H) for testing and evaluating the physical properties of waste plastics colored in various colors and reinforced with physical properties,        Recycling plastic pellets using waste plastics, characterized in that manufactured by a manufacturing method comprising a product production step (I) for producing a product according to the design drawings of the product to be produced using the waste plastics after the second physical property test.

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