KR910007649A - 패널의 제조방법 - Google Patents

패널의 제조방법 Download PDF

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KR910007649A
KR910007649A KR1019900017575A KR900017575A KR910007649A KR 910007649 A KR910007649 A KR 910007649A KR 1019900017575 A KR1019900017575 A KR 1019900017575A KR 900017575 A KR900017575 A KR 900017575A KR 910007649 A KR910007649 A KR 910007649A
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extrusion
polymer
zone
sections
compression
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KR1019900017575A
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KR0161981B1 (ko
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카르로 코롬보 기안
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원본 미기재
아이크마 산 기오르기오 에스.피.에이
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/256Exchangeable extruder parts
    • B29C48/2564Screw parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/482Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
    • B29B7/483Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs the other mixing parts being discs perpendicular to the screw axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/30Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B29B7/485Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with three or more shafts provided with screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/285Feeding the extrusion material to the extruder
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/285Feeding the extrusion material to the extruder
    • B29C48/288Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
    • B29C48/2886Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/402Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/405Intermeshing co-rotating screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/535Screws with thread pitch varying along the longitudinal axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/57Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/625Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/285Feeding the extrusion material to the extruder
    • B29C48/297Feeding the extrusion material to the extruder at several locations, e.g. using several hoppers or using a separate additive feeding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B29C48/41Intermeshing counter-rotating screws
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50Details of extruders
    • B29C48/505Screws
    • B29C48/64Screws with two or more threads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING 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
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/16Fillers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Cell Separators (AREA)
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  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

내용 없음

Description

패널의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1A, 1B 및 1C도는 본 발명에 의한 가느다란 구성요소(elongated elements)의 나선상압출섹션(helical extrusion sections)을 형성하는 요부섹션단면도.
제2A, 2B 및 2C도는 본 발명에 의한 가느다란 구성요소의 무공급 니딩섹션(non-feeding kneading sections)을 구성하는 주요한 세그머트(segment)의 단면도.
제3도는 본 발명에 의한 일체구조형 혼합압출스페이스 또는 참버(integral mixing and extruding space or chamber)내에 있는 무공급니딩섹션의 횡단면도.

Claims (8)

  1. 주로 폴리머/필터 조성물로 구성시켜, 그 폴리머는 연화온도 150C이상의 열가소성 폴리머를 적어도 일부(part) 구성되고 그 필터는 감온 성유기질입자를 적어도 일부(part) 구성되며, 상기 폴리머와 필터의 혼합물을 구성하여 (a), 상기 혼하물을 압출시켜 웨브(web)를 구성하고(b), 응고(solidfication)전에 상기 웨브를 압연(calendering) 시키는 공정으로 구성되는 재성형이 가능한 자기지지형의 얇은 패널의 제조방법에 있어서, 상기 열가소성폴리머와 상기 감온성필러를, 공급단과 압출단을 구비한 일체구조형 혼합압축스페이스(integral mixing and extruding space)로 공급시키며, 주로 평행하게 배치된 한쌍의 공회전 및 상호작동을 하는 가느다란 구성요소(elongated elements)를 구성시켜 각각 상기 스페이스의 공급단과 압축단 시이에 주로 구성된 길이(lentgth)와, 그 길이에 따라 서로 일정한 간격을 둔 적어도 3개의 공급에 효과적인 나선형압출섹션(extrusion sections)과, 인접한 압출섹션사이에 위치되어 있는 각각의 적어도 2개의 무공급니딩섹션을 구성하여 상기 가느다란 구성요소 각각의 니딩섹션과 압축섹션은 상기 길이에 따라 반경방향으로 인접한 위치에서 구성되어 인접한 압출구역 사이에 하나의 나징구역을 구성하도록 적어도 2개의 니딩구역과 적어도 3개의 압출구역을 상기 스페이스내에 구성시킴으로써 단일공정(single step)으로 상기 혼합물을 구성시켜 압출시키며, 상기 폴리머의 적어도 일부(a part)를 상기 공급단 가까이 위치한 제1압축구역의 영역에서 상기 스페이스로 공급시킴과 동시에 상기 감온성필터의 적어도 일부를 상기 제1압출구역보다 상기 압출단에 더 가깝게 위치한 제2압축구역의 영역에서 상기 스페이스로 공급시킴을 특징으로 하는 상기 방법.
  2. 제1항에 있어서, 상기 스페이스의 압출단에서 가장 가까운 압출구역은 상기 스페이스내에 구성된 증기를 제거시키는 배출수단과 접속함을 특징으로 하는 상기 방법.
  3. 제1항에 있어서, 상기 가느다란 압출구성요소 각각은 4개의 압출섹션과 3개의 무공급니딩섹션을 구성함을 특징으로 하는 상기 방법.
  4. 제2항 또는 제3항에 있어서, 상기 배출수단과 접속되는 상기 압출구역 다음에 위치된 압축섹션의 영역에서의 혼합 및 압출의 결합공정에서는 적어도 하나의 추가성분을 공급함을 특징으로 하는 상기 방법.
  5. 제1항에 있어서, 상기 열가소성폴리머는 폴리머와 프로필렌의 코폴리머에서 선택되며, 상기 감온성 필러를 주로 미분쇄목부분으로 구성함을 특징으로 하는 상기 방법.
  6. 연화온도 150°이상의 테내시티가 높은 폴리머와 적어도 하나의 감온성유기질필러로 구성하여 상기 폴리머와 필러의 혼합물을 형성시켜 그 혼합물을 압출하여 웨브(web)를 형성하고 그 웨브를 응고전에 압연시켜 재성형이 가능한 자기지지행의 얍ㄼ은 패널을 제조하는 장치에 있엇, 공급단괄 압출단을 구비하며, 주로 평행하게 배열된 한쌍의 가느다란 회전가능한 구성요소를 포함시켜 각각 상ㄱ 공급단괄 압출단사이에 구성된 길이와, 상기 길이에 따라 서로 간격을 둔 적어도 3개의공급에 효과적인 나선형 압축섹션과, 인접한 압축 섹션사이에 위치한 각각이 적어도 2개의 무공급니딩섹션을 구비하는 일체구조형 혼합압출참버(integral mixing and sctrusion chamber)를 구성시켜, 상기 가느다란 구성요소 각각은 회전시에 원농형 스페이스(cylindeieal space)를 구성하고, 두개의 가느다란 구성요소는 회전시에 평행하고 서로 중첩하는 2개의 원통형스페이스를 구성하며, 상기 가느다란 구성요소 각각의 니딩섹션과 압축섹션은 상기 길이에 따라 반경방향으로 인저한 위치에서 구성되어 인접한 압출구역사이에 하나의 니딩구역을 제공하도록 적어도 2개의 니딩구역과 적어도 3개의 압출구역을 형성하고, 상기 참버는 상기 폴리머를 상기 차버로 공급하는 공급단 가가이 위치한 제1압출구역의 제1개구와, 상기 감온성필터를 공급하는 제1압출구역보다 상기 압출단에 더 가까이 위치한 제2 압출구역의 영역의 제2개구 및 배개시키기 위한 상기 일체구조형참버의 압축단에서 가장 가까이 있는 압출구역의 제3개구를 구비함을 특징으로 하는 장치.
  7. 제6항에 있어서, 상기 가느다란 압출구성요소 각각은 4개의 상기 스크류-공급섹션고 3개의 상기 중간두공급니딩섹션으로 구성함을 특징으로 하는 상기 장치.
  8. 제6항 또는 제7항에 있어서, 상기 압출단에서 가장 가까운 상기 압출구역의 다음에 있는 스크류-공급섹션 영역에서 상가 압출참버로 또 다른 성분을 공급하는 적어도 하나의 추가개구를 구성함을 특징으로 하는 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900017575A 1989-10-31 1990-10-31 패널의 제조방법 KR0161981B1 (ko)

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CA2028715C (en) 2000-06-27
US5173230A (en) 1992-12-22
KR0161981B1 (ko) 1999-01-15
DE69011468D1 (de) 1994-09-15
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EP0426619B1 (en) 1994-08-10
EP0426619A3 (en) 1991-08-21
ES2057508T3 (es) 1994-10-16
IT8922235A0 (it) 1989-10-31
EP0426619A2 (en) 1991-05-08
IT1237672B (it) 1993-06-15
AU638063B2 (en) 1993-06-17
ATE109717T1 (de) 1994-08-15
AU6472390A (en) 1991-05-09
JP2592719B2 (ja) 1997-03-19
JPH03175013A (ja) 1991-07-30
CA2028715A1 (en) 1991-05-01
DE69011468T2 (de) 1994-12-22

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