KR940013793A - Method for producing biaxially stretched polyester film - Google Patents

Method for producing biaxially stretched polyester film Download PDF

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Publication number
KR940013793A
KR940013793A KR1019920025564A KR920025564A KR940013793A KR 940013793 A KR940013793 A KR 940013793A KR 1019920025564 A KR1019920025564 A KR 1019920025564A KR 920025564 A KR920025564 A KR 920025564A KR 940013793 A KR940013793 A KR 940013793A
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KR
South Korea
Prior art keywords
tenter
section
film
width
biaxially stretched
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KR1019920025564A
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Korean (ko)
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KR950014778B1 (en
Inventor
김광태
김권일
전승범
박수영
Original Assignee
박홍기
제일합섬 주식회사
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Priority to KR1019920025564A priority Critical patent/KR950014778B1/en
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    • 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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/08—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique transverse to the direction of feed
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (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 이축연신 폴리에스테르 필름제조 과정중 텐터를 이용한 횡연신시 레일의 형태를 하기식(1)(2)과 같은 지수함수의 형태로 하고 하기식(3)으로 계산되는 횡연신 속도의 차가 0.08 이하이며 횡연신 속도를 0.4sec-1이상으로 하여 연신함으로써 하기식(4)(5)(6)을 만족시키는 횡방향 배향이 강화되고 필름의 전폭에 대하여 균일한 물성을 갖는 이축연신 폴리에스테르의 제조방법을 제공한다.According to the present invention, when the transverse stretching using a tenter is performed during biaxially stretched polyester film manufacturing, the rail has the form of an exponential function as in the following formula (1) and (2), and the difference in the transverse stretching speed calculated by the following formula (3) Biaxially stretched polyester which is 0.08 or less and has a lateral stretch rate of 0.4 sec −1 or more to enhance the lateral orientation satisfying the following formula (4) (5) (6) and having uniform physical properties with respect to the full width of the film: It provides a method of manufacturing.

W(i) =W(O)e×P(ε×1(i)/V) ‥‥‥‥‥‥‥‥‥‥‥‥(1)W (i) = W (O) e × P (ε × 1 (i) / V) ‥‥‥‥‥‥‥‥‥‥‥‥‥ (1)

ε =V/L×1n(W(F)/W(O)) ‥‥‥‥‥‥‥‥‥‥‥‥‥(2)ε = V / L × 1n (W (F) / W (O)) ‥‥‥‥‥‥‥‥‥‥‥‥‥ (2)

여기서, W(i) : 텐터 연신구간중 길이 1일때의 텐터 폭(m)Where W (i): tenter width (m) when length is 1 in the tenter drawing section

W(0) : 텐터 연신구간중 입구에서의 텐터 폭(m)W (0): tenter width (m) at the entrance of the tenter drawing section

W(f) : 텐터 연신구간중 마지막 부분에서의 텐터 폭(m)W (f): tenter width at the last part of the tenter drawing section (m)

ε : 횡연신 속도(sec-1)ε: Lateral stretching speed (sec -1 )

1(i) : 텐터 연신구간중 임의의 위치까지의 길이(m)1 (i): Length to any position in tenter drawing section (m)

V : 주행속도 (m/min)V: Travel speed (m / min)

L : 텐터 연신구간중 입구에서 마지막 부분까지의 길이(m)L: Length from the entrance to the end of the tenter extension section (m)

△ε=1/T×(2-R-1/R) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥(3)Δε = 1 / T × (2-R-1 / R) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ (3)

여기서, △ε: 횡연신 속도의 차Δε: difference in lateral stretching speed

T : 각 구간에서 필름이 통과하는데 걸리는 시간(sec)T: Time taken for the film to pass in each section (sec)

R : W(i)/W (i-1)R: W (i) / W (i-1)

W(i) : 텐터 연신구간중 i번째 구간에서의 텐터 폭(m)W (i): tenter width (m) in the i-th section of the tenter extension section

W(i-1) : 텐터 연신구간중 i-1번째 구간에서의 텐터 폭(m)W (i-1): tenter width (m) in the i-1th section of the tenter drawing section

-10°＜필름 양측부분의 배향방향＜10°‥‥‥‥‥‥‥‥‥‥(4)-10 ° <Orientation direction of both sides of film <10 ° ‥‥‥‥‥‥‥‥‥‥‥ (4)

0.28 ＜필름중앙부분의 복굴절율 ‥‥‥‥‥‥‥‥‥‥‥‥‥(5)0.28 <Birefringence in the central portion of the film ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ (5)

필름 중앙부분과 양측부분의 복굴절율의 차＜0.01 ‥‥‥‥‥(6)Difference between birefringence between the film center and both sides <0.01 ‥‥‥‥‥ 6

Description

이축연신 폴리에스테르 필름의 제조방법Method for producing biaxially stretched polyester film

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

제1도는 본 발명의 단계적 지수함수형 텐터(tenter)레일 형태를 나타내는 개략 평면도이고,1 is a schematic plan view showing the stepped exponential tenter rail shape of the present invention,

제2도는 전체 연신 구간중의 위치에 따른 횡연신속도를 나타내는 그래프로서, (A), (B) 및 (C)는 지수함수형 텐터레일을 따라 각각 210mpm, 190mpm, 170mpm으로 주행시킬때의 결과이고, (D), (E) 및 (F)는 직선형 텐터레일을 따라 각각 210mpm, 190mpm, 170mpm으로 주행시킬때이 결과이고,2 is a graph showing the lateral stretching speed according to the position in the entire drawing section, (A), (B) and (C) is the result of driving at 210mpm, 190mpm, 170mpm respectively along the exponential-type tenter rail , (D), (E) and (F) are the results when driving at 210mpm, 190mpm and 170mpm along the straight tenter rail, respectively.

제3도는 각 연신구간에서의 횡연신속도를 나타낸 그래프이다.3 is a graph showing the transverse stretching speed in each stretching section.

Claims (4)

레일이 아래식(1)과 같은 지수함수의 형태인 텐터를 이용하여 연신함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.A method for producing a biaxially stretched polyester film, characterized in that the rail is stretched using a tenter in the form of an exponential function such as the following equation (1). W(i) =W(O)e×P(ε×1(i)/V) ‥‥‥‥‥‥‥‥‥‥‥‥(1)W (i) = W (O) e × P (ε × 1 (i) / V) ‥‥‥‥‥‥‥‥‥‥‥‥‥ (1) ε =V/L×1n(W(F)/W(O)) ‥‥‥‥‥‥‥‥‥‥‥‥‥(2)ε = V / L × 1n (W (F) / W (O)) ‥‥‥‥‥‥‥‥‥‥‥‥‥ (2) 여기서, W(i) : 텐터 연신구간중 길이 1일때의 텐터 폭(m)Where W (i): tenter width (m) when length is 1 in the tenter drawing section W(0) : 텐터 연신구간중 입구에서의 텐터 폭(m)W (0): tenter width (m) at the entrance of the tenter drawing section W(f) : 텐터 연신구간중 마지막 부분에서의 텐터 폭(m)W (f): tenter width at the last part of the tenter drawing section (m) ε : 횡연신 속도(sec-1)ε: Lateral stretching speed (sec -1 ) 1(i) : 텐터 연신구간중 i번째 구간까지의 길이(m)1 (i): Length to i th section of tenter drawing section (m) V : 주행속도 (m/min)V: Travel speed (m / min) L : 텐터 연신구간중 입구에서 마지막 부분까지의 길이(m)L: Length from the entrance to the end of the tenter extension section (m) 제1항에 있어서, 횡연신 속도의 차가 0.08이하임을 특징으로 하는 이축연신 폴리에스테르 필름의·제조방법.The method for producing a biaxially stretched polyester film according to claim 1, wherein the difference in transverse stretching speed is 0.08 or less. △ε=1/T×(2-R-1/R) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥(3)Δε = 1 / T × (2-R-1 / R) ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ (3) 여기서, △ε: 횡연신 속도의 차Δε: difference in lateral stretching speed T : 각 구간에서 필름이 통과하는데 걸리는 시간(sec)T: Time taken for the film to pass in each section (sec) R : W(i)/W (i-1)R: W (i) / W (i-1) W(i) : 텐터 연신구간중 i번째 구간에서의 텐터 폭(m)W (i): tenter width (m) in the i-th section of the tenter extension section W(i-1) : 텐터 연신구간중 i-1번째 구간에서의 텐터 폭(m)W (i-1): tenter width (m) in the i-1th section of the tenter drawing section 제1항에 있어서, 횡연신속도를 0.4sec-1이상으로 함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The method for producing a biaxially stretched polyester film according to claim 1, wherein the transverse stretching speed is 0.4 sec −1 or more. 제1항 내지 제3항에 있어서, 연신한 필름의 물성이 다음을 만족함을 특징으로 하는 이축연신 폴리에스테르 필름의 제조방법.The method for producing a biaxially stretched polyester film according to claim 1, wherein the physical properties of the stretched film satisfy the following. -10°＜필름 양측부분의 배향방향＜10°‥‥‥‥‥‥‥‥‥‥(4)-10 ° <Orientation direction of both sides of film <10 ° ‥‥‥‥‥‥‥‥‥‥‥ (4) 0.28 ＜필름중앙부분의 복굴절율 ‥‥‥‥‥‥‥‥‥‥‥‥‥(5)0.28 <Birefringence in the central portion of the film ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ (5) 필름 중앙부분과 양측부분의 복굴절율의 차＜0.01 ‥‥‥‥‥(6)Difference between birefringence between the film center and both sides <0.01 ‥‥‥‥‥ 6 ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920025564A 1992-12-26 1992-12-26 Forming method for biaxial polyester film KR950014778B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920025564A KR950014778B1 (en) 1992-12-26 1992-12-26 Forming method for biaxial polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920025564A KR950014778B1 (en) 1992-12-26 1992-12-26 Forming method for biaxial polyester film

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KR940013793A true KR940013793A (en) 1994-07-16
KR950014778B1 KR950014778B1 (en) 1995-12-14

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Publication number Priority date Publication date Assignee Title
KR102036418B1 (en) * 2017-12-26 2019-10-24 도레이첨단소재 주식회사 Polyester film for molding and manufacturing method thereof

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