KR880007204A - Method of producing polyester film - Google Patents

Method of producing polyester film Download PDF

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Publication number
KR880007204A
KR880007204A KR860010977A KR860010977A KR880007204A KR 880007204 A KR880007204 A KR 880007204A KR 860010977 A KR860010977 A KR 860010977A KR 860010977 A KR860010977 A KR 860010977A KR 880007204 A KR880007204 A KR 880007204A
Authority
KR
South Korea
Prior art keywords
heat treatment
film
temperature
polyester
polyester film
Prior art date
Application number
KR860010977A
Other languages
Korean (ko)
Inventor
김충부
박인보
장상홍
유득수
Original Assignee
이상철
주식회사 코오롱
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 이상철, 주식회사 코오롱 filed Critical 이상철
Priority to KR860010977A priority Critical patent/KR880007204A/en
Publication of KR880007204A publication Critical patent/KR880007204A/en

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  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

내용 없음.No content.

Description

폴리 에스테르 필름의 제조 방법Method of producing polyester film

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

제1도는 본 발명에 따른 폴리에스테르 필름의 제조방법을 예로서 나타낸 개념도이다.1 is a conceptual diagram showing an example of a method for producing a polyester film according to the present invention.

Claims (2)

폴리에스테르 수지조성물을 용융, 압출하고 이를 연신 및 열처리하여 폴리에스테르 필름을 제조함에 있어서, 제조된 미연신필름을 종방향 및 횡방향으로 2축연신시켜서 2축 연신필름을 제조하고, 이어서 적어도 4 단계 이상의 열처리과정을 통하여 상기 2축 연신 필름을 결정화시키되, 상기 열처리과정의 초기 단계는 그 마지막 단계에 비하여 30℃ 내지 100℃ 정도 낮은 온도에서 열처리시켜서 됨을 특징으로 하는 폴리에스테르 필름의 제조방법.In preparing a polyester film by melting, extruding a polyester resin composition and stretching and heat treating the polyester resin composition, a biaxially stretched film is produced by biaxially stretching the prepared unstretched film in the longitudinal and transverse directions, and then at least 4 steps. Crystallizing the biaxially stretched film through the above heat treatment process, the initial step of the heat treatment process is a method for producing a polyester film, characterized in that the heat treatment at a temperature of about 30 ℃ to 100 ℃ lower than the last step. 제1항에 있어서, 열처리과정의 초기단계에서의 열처리 온도는 사용된 폴리에스테르의 2차전이온도 내지 냉결정화 온도보다 20℃ 정도 높은 온도임을 특징으로 하는 방법.The method of claim 1, wherein the heat treatment temperature at the initial stage of the heat treatment process is about 20 ° C higher than the secondary transition temperature to the cold crystallization temperature of the polyester used. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR860010977A 1986-12-19 1986-12-19 Method of producing polyester film KR880007204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR860010977A KR880007204A (en) 1986-12-19 1986-12-19 Method of producing polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR860010977A KR880007204A (en) 1986-12-19 1986-12-19 Method of producing polyester film

Publications (1)

Publication Number Publication Date
KR880007204A true KR880007204A (en) 1988-08-26

Family

ID=68470084

Family Applications (1)

Application Number Title Priority Date Filing Date
KR860010977A KR880007204A (en) 1986-12-19 1986-12-19 Method of producing polyester film

Country Status (1)

Country Link
KR (1) KR880007204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030077199A (en) * 2002-03-25 2003-10-01 김혁태 Polyester band making apparatus for packing and the polyester band thereby

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030077199A (en) * 2002-03-25 2003-10-01 김혁태 Polyester band making apparatus for packing and the polyester band thereby

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Legal Events

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A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application