KR950011514A - Biaxially oriented film and manufacturing method thereof - Google Patents

Biaxially oriented film and manufacturing method thereof Download PDF

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Publication number
KR950011514A
KR950011514A KR1019930021837A KR930021837A KR950011514A KR 950011514 A KR950011514 A KR 950011514A KR 1019930021837 A KR1019930021837 A KR 1019930021837A KR 930021837 A KR930021837 A KR 930021837A KR 950011514 A KR950011514 A KR 950011514A
Authority
KR
South Korea
Prior art keywords
refractive index
max
polyester film
film
biaxially oriented
Prior art date
Application number
KR1019930021837A
Other languages
Korean (ko)
Other versions
KR970002307B1 (en
Inventor
한경흠
최복돌
김진사
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.)
Filing date
Publication date
Application filed by 하기주, 주식회사 코오롱 filed Critical 하기주
Priority to KR1019930021837A priority Critical patent/KR970002307B1/en
Publication of KR950011514A publication Critical patent/KR950011514A/en
Application granted granted Critical
Publication of KR970002307B1 publication Critical patent/KR970002307B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/005—Oriented
    • B29K2995/0053—Oriented bi-axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

이축연신 및 열처리를 실시하여 열가소성 폴리에스테르 필름을 제조함에 있어서, 종방향 및 횡방향으로 연신한 필름을 5단계 이상의 열처리 구간의 1∼3구간에서 온도(Tm-30℃) ±10℃, 최종 연신비의 5∼15%비율로 재연신 하며, 상기 열처리 1구간에서 재연신비의 50-70% 배분비를 만족하게 하고(Tm-30℃)±10℃-Tm의 온도에서 이완 열처리함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법에 따라 제조된 이축 연신 폴리에스테르 필름은 필름의 폭방향 전부위에서 균일한 물성을 갖고 있어 보우잉 현상이 없는 우수한 필름이다.In manufacturing a thermoplastic polyester film by carrying out biaxial stretching and heat treatment, the film stretched in the longitudinal and transverse directions is subjected to a temperature (Tm-30 ° C.) of ± 10 ° C. at a temperature of 1 to 3 sections of five or more heat treatment sections, and a final draw ratio. Re-stretch at a ratio of 5 to 15% of the mixture, and satisfy the 50-70% distribution ratio of the re-stretch ratio in one section of the heat treatment (Tm-30 ° C.) The biaxially stretched polyester film produced according to the method for producing a biaxially stretched polyester film has excellent physical properties over the entire width direction of the film and is an excellent film without bowing phenomenon.

Description

이축 연신 필름 및 그의 제조방법Biaxially oriented film and manufacturing method thereof

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

Claims (2)

제1항에 있어서, 상기한 종방향 및 횡방향으로 연신한 필름은 비정질미연신 시이트를 종방향으로 3.5-4.5배 연신하여 △n이 0.063∼0.067 범위와 n가 1.5770∼1.5780 범위를 만족하도록 연신한 후, Tg이상의 온도에서 횡방향으로 3.5-4.5배연신한 것을 특징으로 하는 이축연신 필름의 제조방법.The film stretched in the longitudinal and transverse directions described above is stretched such that Δn is in the range of 0.063 to 0.067 and n is in the range of 1.5770 to 1.5780 by stretching the amorphous unoriented sheet 3.5-4.5 times in the longitudinal direction. After that, the stretching method in the transverse direction at a temperature of Tg or more 3.5-4.5 times. (단 △n=(nMD-nTD), n=(nMD+Td+nND)/3nMD=종방향의 굴절률 nTD=횡 방향의 굴절율 nND=두께방향의 굴절률)(Where Δn = (n MD −n TD ), n = (n MD + Td + n ND ) / 3n MD = longitudinal refractive index n TD = transverse refractive index n ND = thickness refractive index) 제1항의 이축배향 플리에스테 필름이 하기식을 만족하는 것을 특징으로 하는 이축연신 폴리에스테르 필름.A biaxially oriented polyester film according to claim 1, wherein the biaxially oriented polyester film satisfies the following formula. lmax-lmin〈18° ....①l max -l min 〈18 ° .... ① Amax-Amin≥6° ....②A max -A min ≥6 ° .... ② 35°≤Amin≤45° ....③35 ° ≤A min ≤45 ° .... ③ I=max최대 주배향축각I = max main orientation axis angle I=max최대 주배향축각I = max main orientation axis angle A=max최대 광축각A = max max optical axis A=min최소 광축각A = min minimum optical axis (l, A는 수령편광(Conoscopy) 간섭상으로 측정)(l, A measured by the received conoscopy interference) (A=2V,tan2V=관계을 가짐)(A = 2V, tan 2 V = Relationship) nz=최대대 굴절률n z = maximum vs refractive index ny=중간 굴절률(치대 굴절률 직각 방향의 굴절률)n y = intermediate refractive index (refractive index in right direction of the refractive index) nx=최소 굴절률(두께 방향의 굴절률)n x = minimum refractive index (refractive index in the thickness direction) (nx, ny, nz는 ABBE 굴절계로 측정)(n x , n y , n z are measured with ABBE refractometer) ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930021837A 1993-10-20 1993-10-20 Forming method for biaxial polyester film KR970002307B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930021837A KR970002307B1 (en) 1993-10-20 1993-10-20 Forming method for biaxial polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930021837A KR970002307B1 (en) 1993-10-20 1993-10-20 Forming method for biaxial polyester film

Publications (2)

Publication Number Publication Date
KR950011514A true KR950011514A (en) 1995-05-15
KR970002307B1 KR970002307B1 (en) 1997-02-27

Family

ID=19366243

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930021837A KR970002307B1 (en) 1993-10-20 1993-10-20 Forming method for biaxial polyester film

Country Status (1)

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KR (1) KR970002307B1 (en)

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Publication number Publication date
KR970002307B1 (en) 1997-02-27

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