KR940011153A - Biaxially oriented polyester film and its manufacturing method - Google Patents

Biaxially oriented polyester film and its manufacturing method Download PDF

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Publication number
KR940011153A
KR940011153A KR1019920022833A KR920022833A KR940011153A KR 940011153 A KR940011153 A KR 940011153A KR 1019920022833 A KR1019920022833 A KR 1019920022833A KR 920022833 A KR920022833 A KR 920022833A KR 940011153 A KR940011153 A KR 940011153A
Authority
KR
South Korea
Prior art keywords
polyester film
longitudinal direction
film
manufacturing
amax
Prior art date
Application number
KR1019920022833A
Other languages
Korean (ko)
Other versions
KR950012868B1 (en
Inventor
최복돌
김진사
한경흠
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 KR1019920022833A priority Critical patent/KR950012868B1/en
Publication of KR940011153A publication Critical patent/KR940011153A/en
Application granted granted Critical
Publication of KR950012868B1 publication Critical patent/KR950012868B1/en

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Classifications

    • 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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

본 발명은 폭방향으로 균일한 물성을 갖는 폴리에스테르 필름 및 그 제조방법에 관한 것으로 하기식을 만족하는 이측연신 폴리에스테르필름The present invention relates to a polyester film having a uniform physical property in the width direction, and a method for manufacturing the same, wherein the two-sided polyester film satisfies the following formula:

| Amax | - | Amin | < 15°| Amax | -| Amin | <15 °

(여기에서, | Amax |는 전폭 필름의 길이방향과 주배향축이 이루는 각의 절대값이 최대인 것이며, | Amin |는 전폭 필름의 길이 방향과 주배향축이 이루는 각의 절대값이 최소인 것임) 및 무정형 필름시이트를 폭방향으로 3.5~4.5 배로 먼저 연신한 후 길이방향으로 역시 3.5-4.5 배로 연 신 실시함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.(Where | Amax | is the absolute value of the angle formed by the longitudinal direction and the main orientation axis of the full width film, and | Amin | is the absolute value of the angle formed by the longitudinal direction and the main orientation axis of the full width film. And stretching the amorphous film sheet first at 3.5 to 4.5 times in the width direction and then at 3.5 to 4.5 times in the longitudinal direction.

Description

이축연신 폴리에스테르 필름 및 그 제조방법Biaxially oriented polyester film and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (3)

하기 식을 만족하는 것을 특징으로 하는 이축연신 폴리에스테르필름.A biaxially stretched polyester film characterized by satisfying the following formula. | Amax | - | Amin |〈15°| Amax | -| Amin | <15 ° (여기에서, | Amax |는 전폭 필름의 길이방향과 주배향축이 이루는 각의 절대값이 최대인 것이며, | Amin |는 전폭 필름의 길이방향과 주배향축이 이루는 각의 절대값이 최소인 것임).(Where | Amax | is the absolute value of the angle formed by the longitudinal direction and the main orientation axis of the full width film, and | Amin | is the absolute value of the angle formed by the longitudinal direction and the main orientation axis of the full width film. ). 이축연신 폴리에스테르 필름을 제조함에 있어서, 무정형 필름 시이트를 폭방향으로 먼저 연신한 후 길이방향으로 연신을 실시함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The method for producing a biaxially stretched polyester film, wherein the amorphous film sheet is first stretched in the width direction and then stretched in the longitudinal direction. 제2항에 있어서, 폭방향과 길이방향의 연신비가 각각 3.5배~4.5배인 것을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The method of manufacturing a biaxially stretched polyester film according to claim 2, wherein the draw ratios in the width direction and the longitudinal direction are respectively 3.5 times to 4.5 times. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920022833A 1992-11-30 1992-11-30 Biaxial paly ester stretching film and it's making method KR950012868B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920022833A KR950012868B1 (en) 1992-11-30 1992-11-30 Biaxial paly ester stretching film and it's making method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920022833A KR950012868B1 (en) 1992-11-30 1992-11-30 Biaxial paly ester stretching film and it's making method

Publications (2)

Publication Number Publication Date
KR940011153A true KR940011153A (en) 1994-06-20
KR950012868B1 KR950012868B1 (en) 1995-10-23

Family

ID=19344298

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920022833A KR950012868B1 (en) 1992-11-30 1992-11-30 Biaxial paly ester stretching film and it's making method

Country Status (1)

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KR (1) KR950012868B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100837762B1 (en) * 2006-11-06 2008-06-13 도레이새한 주식회사 Polyester release film for polarizer and laminate using the same

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Publication number Publication date
KR950012868B1 (en) 1995-10-23

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