KR930006078A - Method for producing biaxially stretched polyester film - Google Patents
Method for producing biaxially stretched polyester film Download PDFInfo
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- temperature
- polyester film
- stretched polyester
- biaxially stretched
- preheating
- Prior art date
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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
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)
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 |
Family
ID=67433288
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)
Country | Link |
---|---|
KR (1) | KR930006078A (en) |
Cited By (1)
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 |
-
1991
- 1991-09-12 KR KR1019910015935A patent/KR930006078A/en not_active Application Discontinuation
Cited By (1)
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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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E601 | Decision to refuse application |