KR100924041B1 - Reproduction Process of Cross link type Polyetylene - Google Patents

Reproduction Process of Cross link type Polyetylene Download PDF

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KR100924041B1
KR100924041B1 KR20080020754A KR20080020754A KR100924041B1 KR 100924041 B1 KR100924041 B1 KR 100924041B1 KR 20080020754 A KR20080020754 A KR 20080020754A KR 20080020754 A KR20080020754 A KR 20080020754A KR 100924041 B1 KR100924041 B1 KR 100924041B1
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mold
molding
product
crosslinked polyethylene
press
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KR20080038096A (en
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박대열
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박대열
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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
    • 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
    • B29B17/0404—Disintegrating plastics, e.g. by milling to powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29B2017/0203—Separating plastics from plastics
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/141—Feedstock
    • Y02P20/143—Feedstock the feedstock being recycled material, e.g. plastics
    • 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

Abstract

본 발명은 가교형 폴리에틸렌의 재생공법에 관한 것으로, 보다 상세하게는 엑셀 파이프나 전선 피복용 등으로 사용되는 가교형 폴리에틸렌(polyethylene)을 소각 처리 하지않고 재생시킴으로서 환경오염을 방지하고 이의 처리 비용을 절감하는 등의 효과가 있는 것이다.The present invention relates to a method for regenerating crosslinked polyethylene, and more particularly, to prevent environmental pollution and to reduce processing costs by regenerating crosslinked polyethylene, which is used for coating an Excel pipe or an electric wire, without incineration. The effect is that.

일상생활에 많이 사용하는 수지류(plastics) 중에서 열가소성수지는 현재 대부분 원활하게 재활용되고 있으나 상기한 열가소성 수지중에서도 엑셀 파이프나 전선 피복용 등으로 사용되고 있는 가교형 폴리에틸렌은 가열하여도 용융성(melt index)이 양호하지 못함에 따라 수지 작업의 주종인 사출 또는 압출작업이 가교형 폴리에틸렌에서는 불가능한 상태이므로 재생되지 못하고 주로 소각처리하므로 대기와 수질, 토질을 오염시켜 자연환경을 파괴하는 문제점이 있었다.Among the plastics used in daily life, thermoplastic resins are mostly recycled smoothly, but cross-linked polyethylene, which is used for the application of Excel pipes or wires, is melt index even when heated. As this is not good, the injection or extrusion operation, which is the predominant resin resin operation, is impossible in crosslinked polyethylene, so it is not regenerated and mainly incinerated, thus contaminating the air, water, and soil, thereby destroying the natural environment.

본 발명은 상기의 문제점을 해결하고자 창안한 것으로서, 이의 발명요지는 폐기한 가교형 폴리에틸렌 재질로 된 제품을 수거하는 폐제품 수거공정(제1공정), 상기 수거된 제품을 종류와 크기별로 분류하는 분류공정(제2공정), 분류된 폐제품을 2∼3mm크기로 분쇄하는 분쇄공정(제3공정), 상기 분쇄물을 금형에 투입 후 250∼270℃의 온도에서 예열프레스로 예열시키는 예열공정(제4공정), 예열된 분쇄물을 성형 프레스기로 이송하는 이송공정(제5공정), 상기 예열된 분쇄물을 150kg/cm2의 고압에서 성형 프레스기로 성형하는 성형공정(제6공정), 성형된 제품을 인출하여 후가공 및 품질검사하는 후처리공정(제7공정)의 순으로 가교형 폴리에틸렌의 재생 작업을 진행하는 것으로서, 이는 폐기한 가교형 폴리에틸렌을 소각 처리 하지않고 재활용할 수 있게 함으로서 환경오염을 방지하고 이의 생산원가를 절감하는 등의 효과가 있는 것이다.The present invention has been made to solve the above problems, the present invention is a waste product collection process (first process) to collect the products of the cross-linked polyethylene material discarded, to classify the collected products by type and size Sorting process (second process), crushing process (3rd process) to crush the sorted waste products into 2 ~ 3mm size, preheating process to preheat preheat press at 250 ~ 270 ℃ (4th step), a transfer step (5th step) for transferring the preheated pulverized product to a molding press, a molding process (sixth step) for molding the preheated pulverized product at a high pressure of 150kg / cm 2 , Recycling of crosslinked polyethylene is carried out in the order of post-treatment process (seventh process), which takes out the molded product, post-processing and quality inspection, which allows the discarded crosslinked polyethylene to be recycled without being incinerated. It will be effective, such as to prevent environmental pollution and reduce its production costs.

가교형 폴리에틸렌, 열가소성 수지, 열경화성수지 Cross-linked polyethylene, thermoplastics, thermosetting resins

Description

가교형 폴리에틸렌의 재생공법{Reproduction Process of Cross link type Polyetylene}Recycling Process of Cross-link Polyethylene

본 발명은 가교형 폴리에틸렌의 재생공법에 관한 것이다.The present invention relates to a process for regenerating crosslinked polyethylene.

엑셀 파이프나 전선 피복용 등으로 사용되는 가교형 폴리에틸렌(polyethylene)을 소각 처리 하지 않고 재생시킴으로서, 환경오염을 방지하고 이의 처리 비용을 절감 할 수 있게 한 것이다.By recycling the cross-linked polyethylene used for excel pipe or wire coating without incineration, it is possible to prevent environmental pollution and reduce the processing cost.

본 발명은 가교형 폴리에틸렌의 재생공법에 관한 것으로서, 보다 상세하게는 엑셀 파이프나 전선 피복용 등으로 사용되는 가교형 폴리에틸렌(polyethylene)을 소각 처리 하지않고 재생시킴으로서 환경오염을 방지하고 이의 처리 비용을 절감하는 등의 효과가 있는 것이다.The present invention relates to a cross-linked polyethylene regeneration method, and more particularly, by recycling the cross-linked polyethylene (polyethylene) used for the Excel pipe or wire coating without incineration treatment to prevent environmental pollution and reduce the processing cost thereof The effect is that.

종래에는 일상생활에 많이 사용하는 수지류(plastics) 중에서 열가소성수지는 현재 대부분 재생이 가능함에 따라 원활하게 재활용되고 있으나 상기한 열가소성 수지중에서도 엑셀 파이프나 전선 피복용 등의 특수용도로 많이 사용되고 있는 가교형 폴리에틸렌은 열경화성수지처럼 재생되지 못하는 실정인 바, 이를 해결하기 위한 노력을 많은 사람들이 하였으나 상기한 가교형 폴리에틸렌은 가열하여도 용융성(melt index)이 양호하지 못함에 따라 수지작업의 주종인 사출 또는 압출작업에 의한 재생작업은 현재 불가능한 상태이므로 주로 소각처리하여 폐기처분함으로서 대기와 수질,및 토질을 오염시켜 자연환경을 파괴하는 문제점이 있었다.Conventionally, among the resins (plastics) used in daily life, thermoplastic resins are recycled smoothly as most of them can be recycled at present, but among the above-mentioned thermoplastic resins, cross-linked resins are frequently used for special purposes such as excel pipes or wire coatings. Polyethylene is not able to be regenerated like a thermosetting resin, and many people have made efforts to solve it. However, the cross-linked polyethylene has a poor melt index even when heated, so injection or extrusion, which is mainly used in resin work Regeneration work by the work is currently impossible, so incineration treatment is mainly disposed of, there was a problem to destroy the natural environment by polluting the air, water, and soil.

폐기한 가교형 폴리에틸렌 재질로 된 제품을 수거하는 폐제품 수거공정(제1공정), 상기 수거된 제품을 종류와 크기별로 분류하는 분류공정(제2공정), 분류된 폐제품을 2∼3mm크기로 분쇄하는 분쇄공정(제3공정), 상기 분쇄물을 금형에 투입 후 250∼270℃의 온도에서 예열프레스로 예열시키는 예열공정(제4공정), 예열된 분쇄물을 성형 프레스기로 이송하는 이송공정(제5공정), 상기 예열된 분쇄물을 150kg/cm2의 고압에서 성형 프레스기로 성형하는 성형공정(제6공정), 성형된 제품을 인출하여 후가공 및 품질검사하는 후처리공정(제7공정)의 순으로 가교형 폴리에틸렌의 재생 작업을 진행하는 것이다.Waste product collection process (the first process) to collect the products made of the cross-linked polyethylene material discarded, classification process (the second process) to classify the collected products by type and size, and sorted waste products 2-3mm size Grinding process (third process) to grind by using, preheating process (fourth process) to preheat the preheat press at 250-270 ° C after the crushed product is put into the mold, and transfer to transfer the preheated crushed product to the molding press Step (5th step), molding step of molding the preheated pulverized product with a molding press at a high pressure of 150kg / cm 2 (step 6), and post-processing step of taking out the molded product after processing and quality inspection (7th) The step of regenerating the crosslinked polyethylene is carried out in order).

상기와 같이 구성된 본 발명의 가교형 폴리에틸렌의 재생방법은 엑셀파이프나 전선피복 등과 같이 내열성이 좋고 고인장성과 고경도성의 가교형 폴리에틸렌재질로서, 종래에는 재생할 수가 없어 재활용되지 못하고 소각하여 폐기처분하였으나 본 발명의 재생공정에 따라 재활용 할수 있게 한 것으로서, 이는 종래의 소각비용 을 절감할 수 있을 뿐만아니라 대기와 수질 및 토질의 오염을 줄여 자연환경의 파괴를 방지할 수 있게 하는 효과가 있게 한 것이다.The regeneration method of the crosslinked polyethylene of the present invention configured as described above is a crosslinked polyethylene material having high heat resistance and high tensile and high hardness, such as an excel pipe or an electric wire coating. As it is possible to recycle according to the regeneration process of the invention, it is possible to reduce the cost of incineration of the conventional as well as to reduce the pollution of the air, water and soil to prevent the destruction of the natural environment.

도 1은 본 발명의 공정 표시도이고, 도 2는 본 발명의 예열 프레스의 단면도이고, 도 3은 성형프레스의 단면도이다.1 is a process diagram of the present invention, Figure 2 is a cross-sectional view of the preheating press of the present invention, Figure 3 is a cross-sectional view of the molding press.

본 발명은 가교형 폴리에틸렌의 재생공정에 관한 것으로서, 이를 상세히 설명하면 다음과 같다.The present invention relates to a regeneration process of crosslinked polyethylene, which is described in detail as follows.

(1) 제1공정 - 폐제품 수거공정(1) Process 1-Waste Product Collection Process

가교형 폴리에틸렌 재질로 된 엑셀파이퍼나 전선 피복제 중 폐기처분된 제품을 수거한다.Disposal of waste pipes from excel piper or wire sheath made of crosslinked polyethylene is collected.

(2) 제2공정 - 폐제품 분류공정(2) Process 2-Waste Product Sorting Process

상기의 가교형 폴리에틸렌 재질로 된 폐제품을 종류 및 크기별로 분류한다.The waste products made of the crosslinked polyethylene are classified by type and size.

(3) 제3공정 - 폐제품 분쇄공정(3) 3rd process-waste product grinding process

제2공정에 의해 분류된 폐제품을 분쇄기로 2∼3mm의 입도 크기로 분쇄한다.The waste products classified by the second process are ground to a particle size of 2 to 3 mm using a mill.

(4) 제4공정 - 예열공정(4) 4th process-Preheating process

2∼3mm로 분쇄된 분쇄물(4)을 상하부 금형(3a, 3b)으로 구성된 금형(3)의 하부 금형(3b)내에 투입한 후 상하부 금형(3a, 4b)을 밀폐한 다음 상기 금형(3)을 상부 열판(1a)과 하부 열판(1b)로 구성한 예열 프레스(1)에 장입한 후 열판 온도가 250∼270℃이고 내부 압력이 10∼20kg/cm2의 내부 분위기에서 상기 금형(3)을 10분 가량 예열시킨다.The pulverized product 4 pulverized into 2 to 3 mm is introduced into the lower mold 3b of the mold 3 composed of the upper and lower molds 3a and 3b, and the upper and lower molds 3a and 4b are sealed, and then the mold 3 ) Into a preheating press (1) consisting of an upper hot plate (1a) and a lower hot plate (1b), and then the mold (3) in an internal atmosphere having a hot plate temperature of 250 to 270 캜 and an internal pressure of 10 to 20 kg / cm 2 . Preheat for about 10 minutes.

(5) 제5공정 - 이송공정(5) Process 5-Transfer Process

상기 예열공정(제4공정)에서 예열된 분쇄물(4)이 장입된 금형(3)을 성형 프레스(2)로 이송하는 공정A step of transferring the mold 3, into which the pulverized product 4 preheated in the preheating step (fourth step), is charged to the molding press 2.

(6) 제6공정 - 성형공정(6) 6th process-molding process

상기 분쇄물(4)를 장입한 금형(3)을 상하부 성형판(2a, 2b)로 구성된 성형프레스(2)에 투입하여 150kg/cm2 이상의 고압 분위기에서 15∼20분동안 프레스 작업을 하여 재생된 제품(5)을 성형한 후 상기 금형(3)의 외부온도가 100℃ 정도로 냉각될 때까지 냉각수 배출구(2c)를 통해 냉각수를 상기 금형(3)의 외부에 분사한다.The mold 3 into which the pulverized material 4 is charged is put into a molding press 2 composed of upper and lower molding plates 2a and 2b, which is press-recycled for 15 to 20 minutes in a high pressure atmosphere of 150 kg / cm 2 or more. After the molded product 5 is molded, the coolant is sprayed to the outside of the mold 3 through the coolant outlet 2c until the external temperature of the mold 3 is cooled to about 100 ° C.

이 공정에서 특히 주의할 점은 성형프레스(2)에서 150kg/cm2 이상의 고압으로 프레스 작업을 한 후 냉각시키지 않은채 상기 재생된 제품(5)을 금형(3)에서 바로 인출할 경우 제품 변형이 일어나서 불량이 되기쉽다.Particular attention should be paid to this process, in which press deformation is performed at a high pressure of 150 kg / cm 2 or higher in the molding press (2), and the product deformation is removed when the regenerated product (5) is taken out directly from the mold (3) without cooling. It is easy to get up and be bad.

(7) 제7공정 - 후처리 공정(7) 7th process-post-treatment process

상기 제6공정에서 냉각 처리된 제품(5)을 상기 금형(3)에서 인출한 다음 사상 등의 후처리 작업과 품질 검사를 하여 제품을 완성한다.The product 5 cooled in the sixth step is taken out of the mold 3 and then subjected to post-treatment operations such as finishing and quality inspection to complete the product.

이의 실시예는 다음과 같다.Examples thereof are as follows.

상기의 공정순에 따라 폐기처리된 가교형 폴리에틸렌을 수거하여 분류 후 미세하게 파쇄한 다음 상기 분쇄물(4)을 금형(3)에 투입하여 예열 프레스(1)에서 250∼270℃의 온도에서의 예열작업과 성형 프레스(2)에서 성형 작업을 하여 재생된 제 품(5)을 생산하는 것인 바, 상기의 공정에 따라 가교형 폴리에틸렌을 재생하여 신발 재단판이나 산업용품 등으로 다양하게 재활용함으로써 자원 재활용과 환경 보호 및 생산비 절감 등의 효과가 있다.According to the above process sequence, the cross-linked polyethylene that has been disposed of is collected, sorted finely after sorting, and then the pulverized product 4 is put into a mold 3 and preheated at a temperature of 250 to 270 ° C. in a preheating press 1. It is to produce the recycled product (5) by the molding operation in the work and forming press (2), by recycling the cross-linked polyethylene in accordance with the above process to recycle the shoe cutting plate or industrial products in various ways It is effective in recycling, protecting the environment, and reducing production costs.

도1은 본 발명의 공정 표시도1 is a process display of the present invention

도2는 본 발명의 예열 프레스의 단면도2 is a cross-sectional view of the preheating press of the present invention.

도3은 성형 프레스의 단면도3 is a cross-sectional view of the molding press

※도면의 부호에 대한 부호의 설명※ Explanation of code about code of drawing

1 - 예열프레스 1a - 상부 열판 1b - 하부 열판1-Preheating press 1a-Upper hot plate 1b-Lower hot plate

2 - 성형프레스 2a - 상부 성형판 2b - 하부 성형판2-forming press 2a-upper forming plate 2b-lower forming plate

2c - 냉각수 배출구 3 - 금형 3a - 상부 금형2c-coolant outlet 3-mold 3a-upper mold

3b - 하부 금형 4 - 분쇄물 5 - 제품3b-lower mold 4-ground 5-products

Claims (1)

가교형 폴리에틸렌 재질로 된 엑셀파이프나 전선 피복제 중 폐기처분된 폐제품을 수거하는 폐제품 수거공정;A waste product collection process for collecting waste products disposed of in an Excel pipe or an electric wire coating material made of a crosslinked polyethylene material; 상기 폐제품을 종류 및 크기별로 분류하는 폐제품 분류공정;A waste product classification process for classifying the waste product by type and size; 분류된 폐제품을 분쇄기를 이용하여 2∼3mm의 입도 크기의 분쇄물(4)로 분쇄하는 폐제품 분쇄공정;A waste product pulverizing step of crushing the sorted waste product into a pulverized product 4 having a particle size of 2 to 3 mm using a pulverizer; 상기 분쇄물(4)을 상하부 금형(3a, 3b)으로 구성된 금형(3)의 하부 금형(3b) 내에 투입시켜 상하부 금형(3a, 3b)을 밀폐한 다음, 상기 금형(3)을 상부 열판(1a)과 하부 열판(1b)으로 구성된 예열 프레스(1)에 장입시켜 열판 온도가 250∼270℃이고 내부 압력이 10∼20kg/cm2의 내부 분위기에서 상기 금형(3)을 10분 동안 예열시키는 예열공정;The pulverized material 4 is introduced into the lower mold 3b of the mold 3 composed of the upper and lower molds 3a and 3b to seal the upper and lower molds 3a and 3b, and then the mold 3 is attached to the upper hot plate ( It is charged to a preheating press 1 composed of 1a) and a lower hot plate 1b to preheat the mold 3 for 10 minutes in an internal atmosphere having a hot plate temperature of 250 to 270 ° C. and an internal pressure of 10 to 20 kg / cm 2 . Preheating process; 상기 분쇄물(4)이 장입된 금형(3)을 상하부 성형판(2a, 2b)으로 구성된 성형 프레스(2)로 이송하는 이송공정;A transfer step of transferring the mold 3 into which the pulverized material 4 is loaded, to a molding press 2 composed of upper and lower molding plates 2a and 2b; 상기 분쇄물(4)이 장입된 금형(3)을 상기 성형 프레스(2)의 상하부 성형판(2a, 2b) 사이에 투입시켜 150kg/cm2의 고압 분위기에서 15∼20분 동안 프레스 작업을 하여 재생된 제품(5)을 성형한 다음, 상기 금형(3)의 외부온도가 100℃로 냉각될 때까지 상기 상하부 성형판(2a, 2b)에 각각 구비된 냉각수 배출구(2c)를 통해 냉각수를 상기 금형(3)의 외부에 분사하는 성형공정; 및The mold 3 into which the pulverized product 4 is charged is put between the upper and lower molding plates 2a and 2b of the molding press 2 and pressed for 15 to 20 minutes in a high pressure atmosphere of 150 kg / cm 2 . After molding the regenerated product (5), the coolant is passed through the coolant outlets (2c) respectively provided in the upper and lower molding plates (2a, 2b) until the external temperature of the mold (3) is cooled to 100 ℃ A molding step of spraying the outside of the mold 3; And 상기 냉각수에 의해 냉각 처리된 제품(5)을 상기 금형(3)에서 인출하는 인출공정A drawing process of drawing out the product 5 cooled by the cooling water from the mold 3 을 포함하는 가교형 폴리에틸렌의 재생공법.Regeneration method of crosslinked polyethylene comprising a.
KR20080020754A 2008-03-04 2008-03-04 Reproduction Process of Cross link type Polyetylene KR100924041B1 (en)

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Publication number Priority date Publication date Assignee Title
US5075057A (en) * 1991-01-08 1991-12-24 Hoedl Herbert K Manufacture of molded composite products from scrap plastics

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5075057A (en) * 1991-01-08 1991-12-24 Hoedl Herbert K Manufacture of molded composite products from scrap plastics

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