KR910700137A - 초고분자량 폴리에틸렌과 그의 제조방법 - Google Patents

초고분자량 폴리에틸렌과 그의 제조방법

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Publication number
KR910700137A
KR910700137A KR1019900701924A KR900701924A KR910700137A KR 910700137 A KR910700137 A KR 910700137A KR 1019900701924 A KR1019900701924 A KR 1019900701924A KR 900701924 A KR900701924 A KR 900701924A KR 910700137 A KR910700137 A KR 910700137A
Authority
KR
South Korea
Prior art keywords
molecular weight
sheet
polyethylene
high molecular
weight polyethylene
Prior art date
Application number
KR1019900701924A
Other languages
English (en)
Other versions
KR0166945B1 (ko
Inventor
마사시 니시야마
히데아키 후지이
다츠미 다카하시
Original Assignee
기타지마 요시토시
다이니폰인사츠 가부시키가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 기타지마 요시토시, 다이니폰인사츠 가부시키가이샤 filed Critical 기타지마 요시토시
Publication of KR910700137A publication Critical patent/KR910700137A/ko
Priority to KR1019980702319A priority Critical patent/KR0166946B1/ko
Application granted granted Critical
Publication of KR0166945B1 publication Critical patent/KR0166945B1/ko

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • B29C48/30—Extrusion nozzles or dies
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    • 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
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    • B29C45/17—Component parts, details or accessories; Auxiliary operations
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    • B29C45/261—Moulds having tubular mould cavities
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    • B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
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    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
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    • B29C48/64—Screws with two or more threads
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    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
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    • B29K2023/0683—UHMWPE, i.e. ultra high molecular weight polyethylene
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    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
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    • C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
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    • C10M2205/0225—Ethene used as base material
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Abstract

내용 없음.

Description

초고분자량 폴리에틸렌과 그의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 폴리에틸렌 시이트 제조용 압출기의 스크류를 예시한 개요도이고,
제2A도와 제2B도는 압출성형기의 틀을 예시한 단면도이다.

Claims (22)

  1. 점도평균분자량 300,000내지 2,000,000의 초고분자량 폴리에틸렌을 포함하는 원료 폴리에틸렌을 시이트 상으로 압출성형시켜 두께 100 내지 300㎛의 시이트상 물질로 성형시킨 것을 특징으로 하는 초고분자량 폴리에틸렌 시이트.
  2. 제1항에 있어서, 상기 원료 폴리에틸렌은 점도평균분자량800,000 내지 1,500,000의 초고본자량 폴리에틸렌을 포함하는 것을 특징으로 하는 시이트.
  3. 제1항에 있어서, 상기 원료 폴리에틸렌은 고분자량의 폴리에틸렌과 저분자량의 폴리에틸렌으로부터 선택된 적어도 두 종류의 폴리에틸렌을 포함하는 것을 특징으로 하는 시이트.
  4. 제1항에 있어서, 상기 원료 폴리에틸렌은 부가적으로 무기물질을 포함하는 것을 특징으로 하는 시이트.
  5. 제1항에 있어서의 시이트는 표면에 미세요철이 형성된 것을 특징으로 하는 시이트.
  6. 점도평균분자량 300,000 내지 2,000,000의 초고분자량 폴리에틸렌을 포함하는 원료 폴리에틸렌을 스크류 압출기를 이요하여 시이트상으로 압출 성형시키는데 있어서, 상기 스크류 플라이트 부분의 길이 L과 스크류 직경 D의 비율L/D이 20내지 40이고 코우트행거의 개구부 각도가 120 내지 70˚인 스크류 압출기를 이용하여 상기 원료 폴리에틸렌을 시이트 상으로 압출시켜 두께 100 내지 300㎛의 폴리에틸렌 시이트를 제조하는 것임을 특징으로 하는 초고분자량 폴리에틸렌 시이트 제조방법.
  7. 제6항에 있어서, 상기 원료 폴리에틸렌은 고분자량의 폴리에틸렌과 저분자량의 폴리에틸렌으로 부터 선택된 적어도 두 종류의 폴리에틸렌을 포함하는 것임을 특징으로 하는 방법.
  8. 제6항에 있어서, 상기 원료 폴리에틸렌은 부가적으로 무기 물질을 포함하는 것임을 특징으로 하는 방법.
  9. 제6항에 있어서의 방법은 상기 원료 폴리에틸렌을 시이트상으로 압출시킴과 동시에 상기 시이트의 압출방향에 대해서 일축방향으로 연신시키는 것임을 특징으로 하는 방법.
  10. 제6항에 있어서의 방법은 상기 스크류 압출기로부터 압출시킨 시이트를 가열된 두개의 로울러로 압력을 가하면서 상기 시이트의 압출방향에 대해 일축방향으로 연신시키는 것임을 특징으로 하는 방법.
  11. 제10항에 있어서, 상기 로울러의 표면에는 미세요철이 형성되어 있는 것임을 특징으로 하는 방법.
  12. 제6항에 있어서, 상기 스크류 압출기로부터 압출된 시이트를 압착시키는 한쌍의 로울러는 서로 다른 온도를 갖는 것임을 특징으로 하는 방법.
  13. 제6항에 있어서, 상기 압출성형은 1.2 내지 2.0의 압출비율범위에서 실시됨을 특징으로 하는 방법.
  14. 제6항에 있어서, 상기 스크류 압출기의 스크류는 피이드부, 압축부 및 미터링부를 포함하는 것을 특징으로 하는 방법.
  15. 제13항에 있어서, 상기 피이드부, 압축부 및 미터링부의 비율은 5 내지 8 : 7 내지 8 : 4임을 특징으로 하는 방법.
  16. 제13항에 있어서, 상기 스크류 압출기의 미터링부에는 고선단부가 설치된 것임을 특징으로 하는 방법.
  17. 제1항 내지 제5항 중 어느 하나의 항에 있어서의 초고분자량 폴리에틸렌을 소정의 형상으로 제조하여 얻어지는 것임을 특징으로 하는 초고분자량 폴리에틸렌을 포함하는 습동부재.
  18. 제1항 내지 제5항 중 어느 하나의 항에 있어서의 초고분자량 폴리에틸렌을 소정의 형상으로 제조하여 얻어지는 것임을 특징으로 하는 초고분자량 폴리에틸렌을 포함하는 자기테이프용 테이프 받침대.
  19. 제18항에 있어서, 상기 초고분자량 폴리에틸렌 시이트는 굴곡면을 갖는 것임을 특징으로 하는 테이프 받침대.
  20. 제18항에 있어서의 테이프 받침대는 상기 초고분자량 폴리에틸렌 시이트를 소정의 형상으로 제조하여 얻어진 시이트를 비가열하게 스코어 절단기를 사용하여 소정의 형상으로 절단시킨 것임을 특징으로 하는 테이프 받침대.
  21. 제20항에 있어서, 상기 스크류 절단기 칼날의 말단부분 각도는 20 내지 90˚ 범위임을 특징으로 하는 테이프 받침대.
  22. 제20항에 있어서, 상기 스코어 절단기에 의해 절단된 단면은 둥근형태임을 특징으로 하는 테이프 받침대.
    ※참고사항:최초출원 내용에 의하여 공개하는 것임.
KR1019900701924A 1988-12-29 1989-12-27 초고분자량 폴리에틸렌 시이트와 그의 제조방법 KR0166945B1 (ko)

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DE68928883T2 (de) * 1988-09-28 1999-08-26 Dai Nippon Insatsu K.K. Spritzgussvorrichtung
EP0410384B1 (en) * 1989-07-28 1995-04-05 Nippon Oil Co. Ltd. Process for the continuous production of high-strength and high-modulus polyethylene material
JP3431706B2 (ja) * 1994-12-16 2003-07-28 新日本石油化学株式会社 積層体・不織布または織布並びにそれらを用いた強化積層体
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US5110663A (en) 1992-05-05
KR0166945B1 (ko) 1999-03-20
WO1990007413A1 (en) 1990-07-12
EP0402484B1 (en) 1996-04-24
DE68926342T2 (de) 1996-11-21
EP0402484A1 (en) 1990-12-19
EP0402484A4 (en) 1992-04-22
KR0166946B1 (ko) 1999-05-01

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