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KR950018184A - Polyester film and manufacturing method thereof - Google Patents

Polyester film and manufacturing method thereof Download PDF

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Publication number
KR950018184A
KR950018184A KR1019930026097A KR930026097A KR950018184A KR 950018184 A KR950018184 A KR 950018184A KR 1019930026097 A KR1019930026097 A KR 1019930026097A KR 930026097 A KR930026097 A KR 930026097A KR 950018184 A KR950018184 A KR 950018184A
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KR
South Korea
Prior art keywords
polyethylene naphthalate
polyester film
polyethylene terephthalate
polyethylene
mixing
Prior art date
Application number
KR1019930026097A
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Korean (ko)
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KR960011759B1 (en
Inventor
이관형
김상일
이영진
Original Assignee
안시환
주식회사 에스·케이·씨
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Application filed by 안시환, 주식회사 에스·케이·씨 filed Critical 안시환
Priority to KR1019930026097A priority Critical patent/KR960011759B1/en
Publication of KR950018184A publication Critical patent/KR950018184A/en
Application granted granted Critical
Publication of KR960011759B1 publication Critical patent/KR960011759B1/en

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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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

본 발명은 폴리에틸렌 테레프탈레이트와 폴리에틸렌 나프탈렌이트를 적정 비율로 혼합하여 폴리에스테르 필름을 제조하는 방법 및 이에 따라 제조된 전기절연용 필름에 관한 것이다. 폴리에틸렌 테레프탈레이트에 폴리에틸렌 나프탈레이트를 혼합하여 용융압출 시트상태로 성형한 후 이축연신하여 이축배향된 폴리에스테르 필름을 제조하는데 있어서, 폴리에틸렌 테레프탈레이트에 폴리에틸렌 나프탈레이트를 다음 식을 만족하는 범위에서 혼합하는 것을 특징으로 하는 폴리에스테르 필름의 제조방법에 의하면, 내열성 및 기계적 특성이 우수하고 저분자량체 함량이 저하된 전기절연용 폴리에스테르 필름을 얻을수 있다.The present invention relates to a method for producing a polyester film by mixing polyethylene terephthalate and polyethylene naphthalate in an appropriate ratio, and to a film for electrical insulation produced accordingly. In preparing a biaxially oriented polyester film by mixing polyethylene naphthalate with polyethylene terephthalate and forming a melt-extruded sheet, biaxially stretching, mixing polyethylene naphthalate with polyethylene terephthalate in a range satisfying the following formula According to the manufacturing method of the polyester film characterized by the above-mentioned, the polyester film for electrical insulation which is excellent in heat resistance and a mechanical characteristic, and the low molecular weight content was reduced can be obtained.

0.55 ≤N ≤0.8 ...........................................(1)0.55 ≤N ≤0.8 ........................... (1 )

0.60 ≤T ≤1.0 ...........................................(2)0.60 ≤T ≤1.0 ........................... (2 )

30/(2N+T) ≤폴리에틸렌 나프탈레이트 혼합비율 ≤145/(3N+T)...(3)30 / (2N + T) ≤ polyethylene naphthalate mixing ratio ≤145 / (3N + T) ... (3)

N:폴리에틸렌 나프탈레이트의 극한점도(dl/g) T:폴리에틸렌 테레프탈레이트의 극한점도(dl/g)N: limiting viscosity of polyethylene naphthalate (dl / g) T: limiting viscosity of polyethylene terephthalate (dl / g)

Description

폴리에스테르 필름 및 그의 제조방법Polyester film and manufacturing method thereof

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

Claims (2)

폴리에틸렌 테레프탈레이트에 폴리에틸렌 나프탈레이트를 혼합하여 용융압출 시트상태로 성형한 후 이축연신하여 이축배향된 폴리에스테르 필름을 제조하는데 있어서, 폴리에틸렌 테레프탈레이트에 폴리에틸렌 나프탈레이트를 다음 식을 만족하는 범위에서 혼합하는 것을 특징으로 하는 전기 절연용 폴리에스테르 필름의 제조방법.In preparing a biaxially oriented polyester film by mixing polyethylene naphthalate with polyethylene terephthalate and forming a melt-extruded sheet, biaxially stretching, mixing polyethylene naphthalate with polyethylene terephthalate in a range satisfying the following formula The manufacturing method of the polyester film for electrical insulation characterized by the above-mentioned. 0.55≤N≤0.8 (1)0.55≤N≤0.8 (1) 0.60≤T≤1.0 (2)0.60≤T≤1.0 (2) 30/(2N+T)≤폴리에틸렌 나프탈레이트 혼합비율≤145/(3N+T) (3)30 / (2N + T) ≤polyethylene naphthalate mixing ratio≤145 / (3N + T) (3) N : 폴리에틸렌 나프탈레이트의 극한점도(dl/g)N: intrinsic viscosity of polyethylene naphthalate (dl / g) T : 폴리에틸렌 테레프탈레이트의 극한점도(dl/g)T: Intrinsic viscosity of polyethylene terephthalate (dl / g) 폴리에티렌 테레프탈레이트에 폴리에틸렌 나프탈레이트가 다음 식을 만족하는 범위로 혼합되어, 극한점도가 0.55dl/g 이상, 유리전이온도가 80 내지 120℃, 결정화온도가 140 내지 210℃이며, 추출 올리고머의 양이 0.6% 이하인 것을 특징으로 하는 전기 절연용 폴리에스테르 필름.Polyethylene terephthalate is mixed with polyethylene naphthalate in a range satisfying the following equation, the intrinsic viscosity is 0.55 dl / g or more, the glass transition temperature is 80 to 120 ℃, the crystallization temperature is 140 to 210 ℃, The amount is 0.6% or less, the polyester film for electrical insulation. 0.55≤N≤0.8 (1)0.55≤N≤0.8 (1) 0.60≤T≤1.0 (2)0.60≤T≤1.0 (2) 30/(2N+T)≤폴리에틸렌 나프탈레이트 혼합비율≤145/(3N+T) (3)30 / (2N + T) ≤polyethylene naphthalate mixing ratio≤145 / (3N + T) (3) N : 폴리에틸렌 나프탈레이트의 극한점도(dl/g)N: intrinsic viscosity of polyethylene naphthalate (dl / g) T : 폴리에틸렌 테레프탈레이트의 극한점도(dl/g)T: Intrinsic viscosity of polyethylene terephthalate (dl / g) ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930026097A 1993-12-01 1993-12-01 Polyester film and manufacturing method thereof KR960011759B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930026097A KR960011759B1 (en) 1993-12-01 1993-12-01 Polyester film and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930026097A KR960011759B1 (en) 1993-12-01 1993-12-01 Polyester film and manufacturing method thereof

Publications (2)

Publication Number Publication Date
KR950018184A true KR950018184A (en) 1995-07-22
KR960011759B1 KR960011759B1 (en) 1996-08-30

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KR1019930026097A KR960011759B1 (en) 1993-12-01 1993-12-01 Polyester film and manufacturing method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493110B1 (en) * 1997-09-09 2005-09-12 주식회사 코오롱 Thermoplastic Synthetic Fiber Nonwoven Fabric and its Manufacturing Method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100493110B1 (en) * 1997-09-09 2005-09-12 주식회사 코오롱 Thermoplastic Synthetic Fiber Nonwoven Fabric and its Manufacturing Method

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Publication number Publication date
KR960011759B1 (en) 1996-08-30

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