KR960700879A - 열가소성 시트의 제조방법 및 그 장치(thermoplastic sheet manufacturing method and apparatus therefor) - Google Patents

열가소성 시트의 제조방법 및 그 장치(thermoplastic sheet manufacturing method and apparatus therefor) Download PDF

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KR960700879A
KR960700879A KR1019950703366A KR19950703366A KR960700879A KR 960700879 A KR960700879 A KR 960700879A KR 1019950703366 A KR1019950703366 A KR 1019950703366A KR 19950703366 A KR19950703366 A KR 19950703366A KR 960700879 A KR960700879 A KR 960700879A
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cooling
sheet
thermoplastic sheet
metal
temperature
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KR100262478B1 (ko
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게이타 모리타
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이토 야스부미
가부시키가이샤 아이펙쿠
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    • 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
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • 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
    • B29C48/03—Extrusion 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
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9145—Endless cooling belts
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9155—Pressure rollers
    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919—Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
    • 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
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0018—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular optical properties, e.g. fluorescent or phosphorescent
    • B29K2995/0026—Transparent
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0072—Roughness, e.g. anti-slip
    • B29K2995/0073—Roughness, e.g. anti-slip smooth

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명의 과제는, 투명성 및/또는 광택성등의 광학적 특성, 표면평활성등의 외관특성, 및 강성에 뛰어난 열가소성 시트의 제조방법 및 그 장치를 제공하는 것이다.
이와 같은 열가소성 시트(19)는, T다이압출기의 T다이(1)로부터 시트형상으로 압출된 용융열가소성 수지(2)를, 캐스트드럼(3)과, 이 드럼의 표면으로부터 소정의 간격으로 원호형상으로 대면하는 무단금속벨트(4)와의 간격에 도입하여, 상기 시트형상 용융수지(2)를 캐스트드럼(3)과 무단금속벨트(4)사이에서 압접하면서, 상기 수지의 열변형온도로부터 연화온도까지의 온도범위에 1차 냉각하고, 곧 이 1차냉각된 시트(9)를, 냉각수를 넣은 냉각조(10)에 도입하여 상기 수지의 고화온도까지 2차 냉각하고, 이 2차 냉각된 시트(11)에 부착한 냉각수를 제거하고, 이어서 이 부착수가 제거된 시트(14)를 [상기 열변형온도 -40℃]로부터 [상기 열변형온도 +15℃]의 온도범위에서 가열처리하여 시트의 성능을 개선하므로써 제조된다. 상기 압접·냉각수단의 금속벨트(4)는, 제1, 제2 및 제3의 3개의 금속로울러(5),(6),(7)에 의하여 회전운동가능하게 지지됨과 동시에, 제1금속 로울러(5)와 제2금속로울러(6) 사이에 상기 원호형상 대면구간 또는 원호형상 압접·냉각부(8)가 형성되어 있다. 부착수 제거수단은, 예컨대 1쌍의 핀치로울(12)과 에이블로장치(13)로 이루어지고, 또 가열처리수단은,예컨대 복수의 가열금속로울(15),(16),(17),(18)로 이루어진다.
이 열가소성 시트(19)는, 식품포장, 의약품포장 등의 포장용;문구용;화장품, 가정용품등의 패키지용 케이스;공업용 소재 등으로서 유용하다.

Description

열가소성 시트의 제조방법 및 그 장치(THERMOPLASTIC SHEET MANUFACTURING METHOD AND APPARATUS THEREFOR)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (15)

  1. T다이압출기의 T다이로부터 시트형상을 압출된 용융열가소성 수지를, 캐스트드럼과, 이 드럼의 표면으로부터 소정의 간격으로 원호형상으로 대면으로 무단금속벨트와의 간격에 도입하여, 상기 시트형상 용융수지를 캐스트드럼과 무단금속벨트 사이에서 압접하면서, 상기 수지의 열변형은 도로부터 연화온도까지의 온도범위에 1차냉각하고, 곧 이 1차냉각된 시트를, 냉각수를 넣은 냉각조에 도입하여 상기 수지의 고화온도까지 2차 냉각하고, 이 2차냉각된 시트에 부착한 냉각수를 제거하고, 이어서 이 부착수가 제거된 시트를 [상기 열변형온도-40℃]로부터 [상기 열변형온도 +15℃]의 온도범위에서 가열처리하는 것을 특징으로 하는 열가소성 시트의 제조방법.
  2. 제1항에 있어서, 열가소성 수지가 폴리프로필렌수지인 열가소성 시트의 제조방법.
  3. 제2항에 있어서, 1차냉각온도가 90~100℃이고, 또한 가열처리온도가 90~150℃인 열가소성 시트의 제조 방법.
  4. 제2항에 있어서, 2차냉각온도가 0~20℃인 열가소성 시트의 제조방법.
  5. 제2항에 있어서, 1차냉각온도가 금속벨트를 표면온도 50~150℃로 가열함과 동시에, 캐스트드럼을 표면온도 50~150℃로 가열함으로써 달성되는 열가소성 시트의 제조방법.
  6. 열가소성 수지를 용융하고, 이 용융수지를 시트형상으로 압출하기 위한 T다이압출기의 T다이와, T다이의 하류쪽에 배치되고, T다이로부터의 상기 시트형상 용융수지를 캐스트드럼과, 이드럼 표면으로부터 소정의 간격으로 원호형상으로 대면하는 무단금속벨트 사이에서 압접하면서, 1차 냉각하기 위한 압접·냉각수단과,상기 압접·냉각수단의 하류쪽에 대치되고, 1차 냉각된 시트를 2차냉각하기 위한, 냉각수를 넣은 냉각조와,상기 냉각조의 하류쪽에 배치되고, 2차냉각된 시트에 부착한 냉각수를 제거하는 수단과, 상기 부착수 제거수단의 하류쪽에 배치되고, 상기 부착수 제거후의 시트를 가열하여서 그 성능을 개선하기 위한 가열처리 수단을 갖추고, 상기 압접·냉각수단의 금속벨트는, 제1, 제2 및 제3의 3개의 금속로울에 의하여 회전운동가능하게 지지됨과 동시에, 제1금속로울은 T다이에 가장 근접하여 캐스트드럼의 위편에 위치하고, 또한 제1금속로울과 제2금속로울 사이에서 상기 캐스트드럼과 금속벨트와의 원호형상 대면구간을 형성하고 있는 것을 특징으로 하는 열가소성 시트의 제조장치.
  7. 제6항에 있어서, 금속벨트가, SUS, 탄소강 및 티탄합금으로 이루어진 군에서 뽑힌 1종으로 만들어지는 열가소성 시트의 제조장치.
  8. 제6항에 있어서, 제1금속로울의 표면이, 내열성 고무 및 탄성으로 가지는 엘라스토머로 이루어진 군에서 뽑힌 1종으로 피복되는 열가소성 시트의 제조장치.
  9. 제6항에 있어서, 캐스트드럼, 제1금속로울 및 제3금속로울이 각각 내부로부터 가열되는 구조를 가지는 열가소성 시트의 제조장치.
  10. 제6항에 있어서, 캐스트드럼 및 금속벨트의 각 표면조도가 0.5㎛이하인 열가소성 시트의 제조장치.
  11. 제6항에 있어서, 캐스트드럼의 표면이 엠보스가공되어 있는 열가소성 시트의 제조장치.
  12. 제6항에 있어서, 금속벨트의 두께가 0.5~1.2㎜이 범위인 열가소성 시트의 제조장치.
  13. 제6항에 있어서, 부착수 제거수단이 1쌍의 핀치로울과 이보다 하류쪽에 배치된 에어블로장치로 이루어진 열가소성 시트의 제조장치.
  14. 제6항에 있어서, 가열처리수단이 복수의 가열금속로울로 이루어진 열가소성 시트의 제조장치.
  15. 제6항에 있어서, 가열처리수단이 가열오븐으로 이루어진 열가소성 시트의 제조장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950703366A 1993-12-28 1993-12-28 열가소성 시트의 제조방법 및 그 장치 KR100262478B1 (ko)

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US5674442A (en) 1997-10-07
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JP3554570B2 (ja) 2004-08-18
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