KR20180092573A - Reusing method of used plastics - Google Patents

Reusing method of used plastics Download PDF

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KR20180092573A
KR20180092573A KR1020170018438A KR20170018438A KR20180092573A KR 20180092573 A KR20180092573 A KR 20180092573A KR 1020170018438 A KR1020170018438 A KR 1020170018438A KR 20170018438 A KR20170018438 A KR 20170018438A KR 20180092573 A KR20180092573 A KR 20180092573A
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resin
weight
parts
waste plastic
tpu
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KR1020170018438A
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Korean (ko)
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강진호
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주식회사 설성프라스틱
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Priority to KR1020170018438A priority Critical patent/KR20180092573A/en
Publication of KR20180092573A publication Critical patent/KR20180092573A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/06—Making preforms by moulding the material
    • B29B11/10—Extrusion moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
    • C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/02—Separating plastics from other materials
    • B29B2017/0213—Specific separating techniques
    • B29B2017/0286—Cleaning means used for separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/26—Scrap or recycled material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The present invention relates to a method for recycling waste plastic composed of thermoplastic polyurethane (TPU) and acrylonitrile butadiene styrene (ABS) resin. The method for recycling waste plastic comprises: a first step of cleaning waste plastic composed of TPU and ABS resin for 5-20 minutes by using nozzle type cleaning equipment for upwardly and downwardly spraying a cleaning liquid, discharging the cleaning liquid, cleaning the same for 1-2 minutes with water, and removing a surfactant component included in the cleaning liquid; a second step of removing moisture of the cleaned waste plastic, drying the same, and pulverizing the same in a flake state of 1-5 mm particle sizes with a 50 HP high-speed pulverizer; and a third step of inputting a resin composition, in which mixed are 70-90 parts by weight of a pulverized waste plastic flake, 10-20 parts by weight of the ABS resin, 0-10 parts by weight of TPU resin, and 1-3 parts by weight of black master batch (black M/B), to a hopper of a melting extruding device, blending and extruding the same, and manufacturing complex resin. The present invention can reduce waste of resources.

Description

폐플라스틱의 재생 방법{Reusing method of used plastics}{Reusing method of used plastics}

본 발명은 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법에 관한 것으로, 더욱 상세하게는 열가소성 폴리우레탄(TPU) 및 아크릴로니트릴부타디엔스티렌(ABS) 수지 등 2성분으로 조성된 플라스틱 제품, 특히 섬유연사기 드럼을 재활용하기 위하여 상기 연사기 드럼을 세정하고 분쇄한 다음, 여기에 ABS 수지, TPU 수지 및 블랙 마스터배치(black M/B)를 혼합한 수지조성물을 압출공정을 통해 복합수지로 제조함으로써 그 물성이 단독수지의 특성을 능가하는 정도로 향상된 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법에 관한 것이다.The present invention relates to a method of recycling a waste plastic composed of a thermoplastic polyurethane and an acrylonitrile butadiene styrene resin, and more particularly, to a method of recycling waste plastics composed of a thermoplastic polyurethane (TPU) and an acrylonitrile butadiene styrene (ABS) The burner drums are cleaned and pulverized to recycle plastic products, particularly fiber spinner drums, and then a resin composition obtained by mixing ABS resin, TPU resin and black M / B is extruded into a composite resin And a thermoplastic polyurethane and an acrylonitrile-butadiene styrene resin whose properties are improved to such an extent as to exceed the properties of a single resin.

플라스틱은 자연생태계 내에서 생분해되지 않고 오랫동안 형태를 유지하는 특성이 있다. 그래서 사용 후 버려지는 플라스틱의 재활용에 대한 많은 연구가 진행되고 있으며, 그 중에서도 농업용 비닐하우스, 음료수 병 등은 각각의 성분별로 분리 배출하거나 수거하여 재사용이 비교적 용이한 편이어서 재사용에 대한 많은 연구가 진행되어 현재에는 상용화 되고 있는 기술이다.Plastics are not biodegradable in natural ecosystems and retain their shape for a long time. Therefore, much research has been carried out on the recycling of used plastics, among which the agricultural greenhouses and beverage bottles are relatively easy to reuse because they are separately discharged or collected for each component. It is a technology that is now commercially available.

본 발명의 목적은 폐플라스틱, 특히 사용연한이 종료된 섬유연사기의 드럼은 폴리우레탄(TPU)과 아크릴로니트릴부타디엔스티렌(ABS) 수지가 실린더 내부와 외부로 부착되고 가공된 형태로 분쇄하거나 절단하여 혼합하더라도 서로 다른 성분이 균일하게 혼합되지 못하는 단점을 해소하기 위해 상기 드럼을 세정 및 분쇄한 다음, 압출시의 블랜딩 조성 및 온도조건의 변화를 통해 복합수지를 제조함으로써 그 물성이 단독수지의 특성을 능가하는 정도로 향상된 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법을 제공하는 것이다.It is an object of the present invention to provide a drum of a waste plastic, in particular, a fiber spinning machine whose end use has been completed, wherein the polyurethane (TPU) and the acrylonitrile butadiene styrene (ABS) resin are crushed or cut into a cylinder- In order to solve the disadvantage that different components are not uniformly mixed even if they are mixed, the drum is washed and pulverized, and then the composite resin is produced by changing the blending composition and temperature condition at the time of extrusion, And a method of recycling waste plastics comprising thermoplastic polyurethane and acrylonitrile butadiene styrene resin which is improved to an excellent extent.

본 발명에 의한 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법은, 열가소성 폴리우레탄(TPU) 및 아크릴로니트릴부타디엔스티렌(ABS) 수지로 구성된 폐플라스틱에 상하로 세척액을 분사할 수 있는 노즐형태의 세척장비를 이용하여 5 ~ 20분 동안 세척을 실시하고 세척액을 배출한 다음, 용수를 사용하여 1 ~ 2분 동안 세척하여 세척액에 함유되어 있는 계면활성제 성분을 제거하는 제1공정; 상기 세정된 폐플라스틱의 수분을 제거하고 건조시킨 후에 50HP의 고속분쇄기를 이용하여 입자크기가 1 ~ 5mm의 플레이크(flake) 상태로 분쇄하는 제2공정; 상기 분쇄된 폐플라스틱 플레이크 70 ~ 90중량부, ABS 수지 10 ~ 20중량부, TPU 수지 0 ~ 10중량부, 블랙 마스터배치(black M/B) 1 ~ 3중량부를 혼합한 수지조성물을 일축 용융압출기의 호퍼에 투입하고 블랜딩 및 압출을 실시하여 복합수지를 제조하는 제3공정으로 이루어짐을 특징으로 한다.The method for recycling waste plastics composed of a thermoplastic polyurethane and an acrylonitrile butadiene styrene resin according to the present invention comprises the steps of spraying a cleaning liquid up and down on waste plastics composed of thermoplastic polyurethane (TPU) and acrylonitrile butadiene styrene (ABS) resin A first step of washing with a nozzle type cleaning apparatus for 5 to 20 minutes, discharging the washing solution, and then washing the solution with water for 1 to 2 minutes to remove the surfactant component contained in the washing solution ; A second step of removing water from the washed waste plastic, drying it, and then pulverizing it into flakes of 1 to 5 mm in particle size using a high-speed pulverizer of 50 HP; A resin composition obtained by mixing 70 to 90 parts by weight of the pulverized waste plastic flakes, 10 to 20 parts by weight of an ABS resin, 0 to 10 parts by weight of a TPU resin, and 1 to 3 parts by weight of a black masterbatch (black M / B) And a third step of blending and extruding the mixture to produce a composite resin.

본 발명은 폐플라스틱, 특히 폴리우레탄(TPU)과 아크릴로니트릴부타디엔스티렌(ABS) 수지의 2성분으로 구성된 섬유연사기 드럼을 사용하여 복합수지 재생기술을 통해 일반 수지로 재사용할 수 있으므로 자원재생에 크게 기여하는 효과가 있다. 따라서 본 발명은 TPU 수지와 ABS 수지로 구성된 폐플라스틱을 재활용하여 일반적으로 많이 사용되는 ABS 수지나 ABS 복합수지를 대체함으로써 여러 가지 종류의 플라스틱 사출제품을 생산하는데 적용이 가능함은 물론, 자원의 낭비를 줄이고 재생품의 품질 또한 순수 ABS 수지가 갖는 고유의 물성을 능가하는 제품을 생산할 수 있다.The present invention can be reused as a general resin through a composite resin recycling technology using waste plastic, especially a fiber spinner drum composed of two components of polyurethane (TPU) and acrylonitrile butadiene styrene (ABS) resin, There is an effect to contribute. Accordingly, the present invention can be applied to the production of various kinds of plastic injection products by replacing the commonly used ABS resin or ABS composite resin by recycling waste plastic composed of TPU resin and ABS resin, And the quality of the regenerated product can also be increased to exceed the inherent physical properties of the pure ABS resin.

도 1은 본 발명의 폐플라스틱 재활용 방법에 적용한 압출기의 공급부, 압축부, 계량부 등을 나타내는 구성도이다.
도 2는 본 발명에 적용한 압출기의 냉각장치에서 제품이 배출되는 상태를 나타내는 실물사진이다.
도 3은 본 발명에 의해 제조된 복합수지를 나타내는 실물사진이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing a feeding section, a compression section, a metering section and the like of an extruder applied to the waste plastic recycling method of the present invention. Fig.
Fig. 2 is a photograph showing a state in which a product is discharged from the cooling device of the extruder according to the present invention.
Fig. 3 is a photograph of a real image showing the composite resin produced by the present invention.

본 발명에 따른 폐플라스틱의 재활용 방법은, 열가소성 폴리우레탄(TPU) 및 아크릴로니트릴부타디엔스티렌(ABS) 수지로 구성된 폐플라스틱에 상하로 세척액을 분사할 수 있는 노즐형태의 세척장비를 이용하여 5 ~ 20분 동안 세척을 실시하고 세척액을 배출한 다음, 용수를 사용하여 1 ~ 2분 동안 세척하여 세척액에 함유되어 있는 계면활성제 성분을 제거하는 제1공정; 상기 세정된 폐플라스틱의 수분을 제거하고 건조시킨 후에 50HP의 고속분쇄기를 이용하여 입자크기가 1 ~ 5mm의 플레이크(flake) 상태로 분쇄하는 제2공정; 상기 분쇄된 폐플라스틱 플레이크 70 ~ 90중량부, ABS 수지 10 ~ 20중량부, TPU 수지 0 ~ 10중량부, 블랙 마스터배치(black M/B) 1 ~ 3중량부를 혼합한 수지조성물을 일축 용융압출기의 호퍼에 투입하고 블랜딩 및 압출을 실시하여 복합수지를 제조하는 제3공정을 포함하여 이루어진다.A method of recycling waste plastic according to the present invention is a method of recycling waste plastics using a nozzle type cleaning apparatus capable of spraying a cleaning liquid up and down on waste plastics composed of thermoplastic polyurethane (TPU) and acrylonitrile butadiene styrene (ABS) A first step of washing for 20 minutes, discharging the washing solution, and then washing with water for 1 to 2 minutes to remove the surfactant component contained in the washing solution; A second step of removing water from the washed waste plastic, drying it, and then pulverizing it into flakes of 1 to 5 mm in particle size using a high-speed pulverizer of 50 HP; A resin composition obtained by mixing 70 to 90 parts by weight of the pulverized waste plastic flakes, 10 to 20 parts by weight of an ABS resin, 0 to 10 parts by weight of a TPU resin, and 1 to 3 parts by weight of a black masterbatch (black M / B) And a third step of blending and extruding the mixture to produce a composite resin.

이하에서는 본 발명의 각 단계별 공정을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 예시하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.Hereinafter, the process of each step of the present invention will be described in detail. However, it is to be understood that the present invention is not limited to the technical idea of the present invention, And does not mean that the category is limited.

먼저, 제1공정은 열가소성 폴리우레탄(TPU) 및 아크릴로니트릴부타디엔스티렌(ABS) 수지로 구성된 폐플라스틱에 상하로 세척액을 분사할 수 있는 노즐형태의 세척장비를 이용하여 5 ~ 20분 동안 세척을 실시하고 세척액을 배출한 다음, 용수를 사용하여 1 ~ 2분 동안 세척하여 세척액에 함유되어 있는 계면활성제 성분을 제거하는 과정으로, 통상의 플라스틱 부품은 장기간 사용으로 인해 표면에 이물질 등이 부착되어 세척공정이 필요하고 이때 효과적인 세정작업을 수행하기 위해 적절한 세정제 및 물리적인 공정이 요구된다. 특히 섬유연사기 드럼은 실린더 형태로 내부가 비어있는 원통 형태로 일반적인 세척공정에서는 쉽게 오염물질의 제거가 곤란함에 따라 본 발명에서는 섬유연사기 드럼과 같은 폐플라스틱 제품을 세척하는 공정에서 좀 더 효과적으로 이물질을 제거하기 위해 상하 좌우에서 노즐을 통해 물을 분사하는 장치를 적용하였다.First, the first step is to wash for 5 to 20 minutes using a nozzle type cleaning apparatus capable of spraying the cleaning liquid up and down on waste plastics composed of thermoplastic polyurethane (TPU) and acrylonitrile butadiene styrene (ABS) resin And washing the solution with water for 1 to 2 minutes to remove the surfactant component contained in the cleaning solution. As a result, the plastic parts of the conventional plastic parts are adhered to the surface due to the long- Processes are required and proper cleaning agents and physical processes are required to perform efficient cleaning operations. In particular, since the fiber spinner drum is cylindrical and has an internal hollow structure, it is difficult to easily remove contaminants in a general washing process. Accordingly, in the present invention, foreign substances are more effectively removed in a process of washing waste plastic articles such as a fiber spinner drum In order to achieve this, a device for spraying water through nozzles was applied.

그리고 본 발명에서는 수많은 실험을 거듭한 결과, 상기 제1공정에서의 세척액은 담점이 40 ~ 50℃인 비이온 계면활성제로 라우릴알콜에 에틸린옥사이드가 7몰 부가된 LA(Lauryl Alcohol)-7 2중량%; 음이온 계면활성제로 폴리아크릴산 소다 2중량%; 정수제로 에틸렌디아민테트라에세틱산 소다 0.5중량%를 혼합한 수용액을 사용하는 것이 세척효과와 환경적인 측면에서 가장 바람직한 것으로 조사되었다. 즉, 섬유연사기에 사용되는 실린더 드럼은 볼트와 너트 등을 분리하여 세정을 실시하는데, 상기 세척액 수용액은 실린더 드럼에 오염되어 있는 오일, 실리콘, 기타 이물질의 효과적인 제거를 수행하기 위한 비이온 계면활성제로 라우릴알콜에 에틸린옥사이드가 7몰 부가된 LA(Lauryl Alcohol)-7을 2중량% 정도 첨가하였고, 세정된 오일 및 이물질의 재부착 방지를 위해서는 음이온 계면활성제로 폴리아크릴산 소다를 2중량% 정도로 첨가하였으며, 또 세정공정에서 효율을 높이기 위해 물속의 금속이온 성분을 킬레이팅할 수 있는 정수제로 에틸렌디아민테트라에세틱산 소다를 0.5중량% 정도 혼합함으로써 상기 제1공정에서의 세정효과를 극대화 할 수 있다.As a result of many experiments in the present invention, it has been found that the washing solution in the first step is a nonionic surfactant having a cloud point of 40 ° C to 50 ° C, and LA (Lauryl Alcohol) -7 having 7 moles of ethylene oxide in lauryl alcohol 2% by weight; 2% by weight of sodium polyacrylate as an anionic surfactant; And 0.5% by weight of sodium ethylenediaminetetraethylhexanoate as a water purification agent was used as a water-based cleaning agent. That is, the cylinder drum used in the fiber spinning machine is cleaned by separating bolts, nuts, and the like. The aqueous solution of the cleaning solution is a nonionic surfactant for performing effective removal of oil, silicone, 2% by weight of LA (Lauryl Alcohol) -7 in which 7 mol of ethyl alcohol was added to lauryl alcohol, and 2% by weight of sodium polyacrylate as an anionic surfactant in order to prevent re-adhesion of cleaned oil and foreign matter In order to increase the efficiency in the washing step, the cleaning effect in the first step can be maximized by mixing about 0.5% by weight of ethylenediaminetetraethylhexanoic acid as a water purification agent capable of chelating metal ion components in water have.

제2공정은 상기 세정된 폐플라스틱의 수분을 제거하고 건조시킨 후에 50HP의 고속분쇄기를 이용하여 입자크기가 1 ~ 5mm의 플레이크(flake) 상태로 분쇄하는 과정으로, 이렇게 절단된 분쇄 수지는 압출기에 투입하기 적당한 상태로 냉각장치 및 가열장치가 동시에 부착된 용융압출기를 사용하여 재생 복합수지로 가공되며, 특히 TPU/ABS 복합수지는 두 가지 고분자 수지의 열적 물리적 특성이 서로 상이하여 일반적인 압출방법으로 재활용하는 것이 현재까지 불가능하였으나, 본 발명에서는 수지의 조성을 적당하게 조절하고 압출기의 용융온도 및 냉각온도를 조정하여 최적의 복합수지 압출가공이 가능한 방법을 개발한 것이다.The second step is a process of removing moisture from the washed waste plastic, drying it, and then pulverizing the pulverized resin in a flake state having a particle size of 1 to 5 mm using a high-speed pulverizer of 50 HP. The TPU / ABS composite resin is processed by using a melt extruder equipped with a cooling device and a heating device at the same time as it is suitable for injection. Particularly, the TPU / ABS composite resin has different thermal and physical properties of the two polymer resins, However, in the present invention, a method capable of optimally controlling the composite resin extrusion process by appropriately adjusting the composition of the resin and adjusting the melting temperature and the cooling temperature of the extruder has been developed.

본 발명에서는 수지의 조성을 적당하게 조절하고 압출기의 용융온도 및 냉각온도를 조정하여 최적의 복합수지 압출가공이 가능한 방법을 개발한 것이다. In the present invention, a method capable of optimally controlling the extrusion of the composite resin by appropriately adjusting the composition of the resin and adjusting the melting temperature and the cooling temperature of the extruder has been developed.

Claims (2)

열가소성 폴리우레탄(TPU) 및 아크릴로니트릴부타디엔스티렌(ABS) 수지로 구성된 폐플라스틱에 상하로 세척액을 분사할 수 있는 노즐형태의 세척장비를 이용하여 5 ~ 20분 동안 세척을 실시하고 세척액을 배출한 다음, 용수를 사용하여 1 ~ 2분 동안 세척하여 세척액에 함유되어 있는 계면활성제 성분을 제거하는 제1공정;
상기 세정된 폐플라스틱의 수분을 제거하고 건조시킨 후에 50HP의 고속분쇄기를 이용하여 입자크기가 1 ~ 5mm의 플레이크(flake) 상태로 분쇄하는 제2공정;
상기 분쇄된 폐플라스틱 플레이크 70 ~ 90중량부, ABS 수지 10 ~ 20중량부, TPU 수지 0 ~ 10중량부, 블랙 마스터배치(black M/B) 1 ~ 3중량부를 혼합한 수지조성물을 일축 용융압출기의 호퍼에 투입하고 블랜딩 및 압출을 실시하여 복합수지를 제조하는 제3공정;
으로 이루어짐을 특징으로 하는 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법.Cleaning was performed for 5 to 20 minutes using a nozzle-type cleaning apparatus capable of spraying the cleaning liquid up and down on waste plastics composed of thermoplastic polyurethane (TPU) and acrylonitrile-butadiene styrene (ABS) resin, Next, the first step of washing with water for 1 to 2 minutes to remove the surfactant component contained in the washing solution;
A second step of removing water from the washed waste plastic, drying it, and then pulverizing it into flakes of 1 to 5 mm in particle size using a high-speed pulverizer of 50 HP;
A resin composition obtained by mixing 70 to 90 parts by weight of the pulverized waste plastic flakes, 10 to 20 parts by weight of an ABS resin, 0 to 10 parts by weight of a TPU resin, and 1 to 3 parts by weight of a black masterbatch (black M / B) Into a hopper of a hopper, blending and extruding the mixture to produce a composite resin;
Wherein the thermoplastic polyurethane and the acrylonitrile butadiene styrene resin are recycled. 제1항에 있어서,
상기 제1공정에서의 세척액은 담점이 40 ~ 50℃인 비이온 계면활성제로 라우릴알콜에 에틸린옥사이드가 7몰 부가된 LA(Lauryl Alcohol)-7 2중량%; 음이온 계면활성제로 폴리아크릴산 소다 2중량%; 정수제로 에틸렌디아민테트라에세틱산 소다 0.5중량%를 혼합한 수용액인 것을 특징으로 하는 열가소성 폴리우레탄 및 아크릴로니트릴부타디엔스티렌 수지로 구성된 폐플라스틱의 재활용 방법.The method according to claim 1,
The washing solution in the first step is a nonionic surfactant having a cloud point of 40 to 50 ° C, and 2 wt% of LA (Lauryl Alcohol) -7 in which 7 mol of ethyl alcohol is added to lauryl alcohol; 2% by weight of sodium polyacrylate as an anionic surfactant; And 0.5% by weight of sodium ethylenediaminetetraethylhexanoate as a water-insoluble agent, and a thermoplastic polyurethane and an acrylonitrile-butadiene styrene resin.
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