KR930006078A - Method for producing biaxially stretched polyester film - Google Patents

Method for producing biaxially stretched polyester film Download PDF

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Publication number
KR930006078A
KR930006078A KR1019910015935A KR910015935A KR930006078A KR 930006078 A KR930006078 A KR 930006078A KR 1019910015935 A KR1019910015935 A KR 1019910015935A KR 910015935 A KR910015935 A KR 910015935A KR 930006078 A KR930006078 A KR 930006078A
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KR
South Korea
Prior art keywords
temperature
polyester film
stretched polyester
biaxially stretched
preheating
Prior art date
Application number
KR1019910015935A
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Korean (ko)
Inventor
최복돌
송기상
Original Assignee
하기주
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.)
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Publication date
Application filed by 하기주, 주식회사 코오롱 filed Critical 하기주
Priority to KR1019910015935A priority Critical patent/KR930006078A/en
Publication of KR930006078A publication Critical patent/KR930006078A/en

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Abstract

본 발명은 이축연신 폴리에스테르 필름의 제조방법에 관한 것으로 종연신된 필름시이트를 예열, 횡연신, 열처리 순의 공정을 거침에 있어 예열처리 온도를 횡연신온도보다 높게 하므로서 필름 두께의 불균일성의 방지와 파단 횟수를 감소시킴을 목적으로 하는 것으로, 예열부의 온도(Tp)가 Tg+30℃∼Tg+70℃(Tg:폴리에스테르의 2차 전이점온도)가 되도록 하고 동시에 횡연신부의 온도(Ts)는 5℃Tp-Ts20℃가 되도록 한 것을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법임.The present invention relates to a method for producing a biaxially stretched polyester film. In the process of pre-heating, transverse stretching, and heat treatment of longitudinally stretched film sheets, the preheating temperature is higher than the transverse stretching temperature, thereby preventing nonuniformity of film thickness. For the purpose of reducing the number of breaks, the temperature (Tp) of the preheating part is Tg + 30 ° C to Tg + 70 ° C (Tg: secondary transition point temperature of polyester) and at the same time the temperature (Ts) of the transverse drawing part. 5 ℃ Tp-Ts It is a manufacturing method of the biaxially-stretched polyester film characterized by being 20 degreeC.

Description

이축연신 폴리에스테르 필름의 제조방법Method for producing biaxially stretched polyester film

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

도면은 본 발명의 폴리에스테르 필름 제조의 실시예와 비교예에 따른 필름의 폭과 온도변화를 나타낸 것이다.The figure shows the width and temperature change of the film according to the Examples and Comparative Examples of the polyester film production of the present invention.

Claims (3)

이축연신 폴리에스테르 필름의 제조상 통상의 횡연신 공정(예열부, 횡연신부 열처리)에 있어서, 예열부의 온도를 횡연신부의 온도보다 높게 설정함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The manufacturing method of the biaxially stretched polyester film characterized by setting the temperature of a preheating part higher than the temperature of a lateral stretch part in the normal lateral stretch process (preheat part, lateral stretch part heat treatment) in manufacture of a biaxially stretched polyester film. 제1항에 있어서, 예열부의 온도(Tp)가 Tg+30℃∼Tg+70℃(Tg:폴리에스테르의 2차 전이점온도)가 되도록 함과 동시에 횡연신부의 온도(Ts)는 5℃Tp-Ts20℃가 되도록 설정함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The temperature (Ts) of the transversely stretched portion according to claim 1, wherein the temperature Tp of the preheated portion is Tg + 30 ° C to Tg + 70 ° C (Tg: secondary transition point temperature of polyester). Tp-Ts Method for producing a biaxially stretched polyester film characterized in that it is set to 20 ℃. 제1항에 있어서, 예열부의 횡연신부와의 온도차(Tp-Ts)중 50% 이상을 횡연신 60% 구간(T1)에서 낮추게 함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The method of manufacturing a biaxially stretched polyester film according to claim 1, wherein at least 50% of the temperature difference (Tp-Ts) with the transverse stretching of the preheating portion is lowered in the transverse stretching 60% section (T 1 ). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910015935A 1991-09-12 1991-09-12 Method for producing biaxially stretched polyester film KR930006078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910015935A KR930006078A (en) 1991-09-12 1991-09-12 Method for producing biaxially stretched polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910015935A KR930006078A (en) 1991-09-12 1991-09-12 Method for producing biaxially stretched polyester film

Publications (1)

Publication Number Publication Date
KR930006078A true KR930006078A (en) 1993-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910015935A KR930006078A (en) 1991-09-12 1991-09-12 Method for producing biaxially stretched polyester film

Country Status (1)

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KR (1) KR930006078A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010044286A (en) * 2001-02-01 2001-06-05 남근수 The manufacturing for method of alkyl-3-(2,6-dehalogen-5-fluorine)-oxo-3- pyridine propionates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010044286A (en) * 2001-02-01 2001-06-05 남근수 The manufacturing for method of alkyl-3-(2,6-dehalogen-5-fluorine)-oxo-3- pyridine propionates

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