KR960021478A - Manufacturing method of biaxially oriented polyester film - Google Patents

Manufacturing method of biaxially oriented polyester film Download PDF

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Publication number
KR960021478A
KR960021478A KR1019940034947A KR19940034947A KR960021478A KR 960021478 A KR960021478 A KR 960021478A KR 1019940034947 A KR1019940034947 A KR 1019940034947A KR 19940034947 A KR19940034947 A KR 19940034947A KR 960021478 A KR960021478 A KR 960021478A
Authority
KR
South Korea
Prior art keywords
stretching
longitudinal
longitudinal stretching
oriented polyester
biaxially oriented
Prior art date
Application number
KR1019940034947A
Other languages
Korean (ko)
Other versions
KR0140300B1 (en
Inventor
서정욱
심완섭
이영진
Original Assignee
안시환
주식회사 에스케이씨
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 안시환, 주식회사 에스케이씨 filed Critical 안시환
Priority to KR1019940034947A priority Critical patent/KR0140300B1/en
Publication of KR960021478A publication Critical patent/KR960021478A/en
Application granted granted Critical
Publication of KR0140300B1 publication Critical patent/KR0140300B1/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
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (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 두께 균일성이 우수한 이축 배향 폴리에스테르 필름을 제조하는 방법에 관한 것으로서, 구체적으로 폴리에스테르 수지를 용융 압출하고 미연신 쉬트를 종방향 및 횡방향으로 연신하는 단계를 포함하는 이축 배향 폴리에스테르 필름의 제조방법에 있어서, 상기 종방향 연신 단계에서 총 종연신비 3.5배 이상의 2단 종연신을 행하되, 제1단 종연신 쉬트의 결정화에너지가 20J/g 이상이 되도록 제1단 종연신을 행하고, 종연신 온도 95 내지 140℃ 범위에서 연신비 2.0 내지 3.0배로 제2단 종연신을 행하는 것을 특징으로 하는 방법에 관한 것이다.The present invention relates to a method for producing a biaxially oriented polyester film having excellent thickness uniformity, specifically, a biaxially oriented polyester comprising melt extruding a polyester resin and stretching the unstretched sheet in the longitudinal and transverse directions. In the method for producing a film, in the longitudinal drawing step, a two-stage longitudinal stretching of 3.5 times or more the total longitudinal stretching ratio is performed, and the first stage longitudinal stretching is performed so that the crystallization energy of the first longitudinal stretching sheet is 20 J / g or more, It is related with the method characterized by performing 2nd stage longitudinal stretching by extending | stretching ratio 2.0-3.0 times in the longitudinal stretch temperature of 95-140 degreeC.

Description

이축 배향 폴리에스테르 필름의 제조방법Manufacturing method of biaxially oriented polyester film

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

제1도는 본 발명에 따르는 폴리에스테르 필름의 2단 종연신 장치의 개략도이다.1 is a schematic view of a two-stage longitudinal drawing apparatus of a polyester film according to the present invention.

Claims (2)

폴리에스테르 수지를 용융 압출하고 미연신 쉬트를 종방향 및 횡방향으로 연신하는 단계를 포함하는 이축 배향 폴리에스테르 필름의 제조방법에 있어서, 상기 종방향 연신 단계에서 총 종연신비 3.5배 이상의 2단 종연신을 행하되, 제1단 종연신 쉬트의 결정화에너지가 20J/g 이상이 되도록 제1단 종연신을 행하고, 종연신 온도 95 내지 140℃ 범위에서 연신비 2.0내지 3.0배로 제2단 종연신을 행하는 것을 특징으로 하는 이축 배향 폴리에스테르 필름의 제조방법.A method for producing a biaxially oriented polyester film comprising melt extruding a polyester resin and stretching an unstretched sheet in a longitudinal direction and a transverse direction, wherein the two-stage longitudinal stretching of 3.5 times or more the total longitudinal stretch ratio in the longitudinal stretching step. The first stage longitudinal stretching is carried out so that the crystallization energy of the first stage longitudinal stretching sheet is 20 J / g or more, and the second stage longitudinal stretching is performed at a stretching ratio of 2.0 to 3.0 times in the longitudinal stretching temperature of 95 to 140 ° C. The manufacturing method of the biaxially-oriented polyester film made into. 제1항에 있어서, 상기 종연신 쉬트의 비중이 1.35 이하가 되도록 하는 것을 특징으로 하는 제조방법.The method according to claim 1, wherein the specific stretching sheet has a specific gravity of 1.35 or less. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034947A 1994-12-19 1994-12-19 Process for preparing biaxially oriented polyester film KR0140300B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940034947A KR0140300B1 (en) 1994-12-19 1994-12-19 Process for preparing biaxially oriented polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940034947A KR0140300B1 (en) 1994-12-19 1994-12-19 Process for preparing biaxially oriented polyester film

Publications (2)

Publication Number Publication Date
KR960021478A true KR960021478A (en) 1996-07-18
KR0140300B1 KR0140300B1 (en) 1998-07-01

Family

ID=19402096

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940034947A KR0140300B1 (en) 1994-12-19 1994-12-19 Process for preparing biaxially oriented polyester film

Country Status (1)

Country Link
KR (1) KR0140300B1 (en)

Also Published As

Publication number Publication date
KR0140300B1 (en) 1998-07-01

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