KR960029068A - 이축 배향 폴리에스테르 필름의 제조방법 - Google Patents

이축 배향 폴리에스테르 필름의 제조방법 Download PDF

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Publication number
KR960029068A
KR960029068A KR1019950001132A KR19950001132A KR960029068A KR 960029068 A KR960029068 A KR 960029068A KR 1019950001132 A KR1019950001132 A KR 1019950001132A KR 19950001132 A KR19950001132 A KR 19950001132A KR 960029068 A KR960029068 A KR 960029068A
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South Korea
Prior art keywords
stretching
sheet
longitudinal
polyester film
oriented polyester
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KR1019950001132A
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English (en)
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KR0173732B1 (ko
Inventor
서정욱
심완섭
이영진
Original Assignee
안시환
주식회사 에스케이씨
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Priority to KR1019950001132A priority Critical patent/KR0173732B1/ko
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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
    • B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
    • 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
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
    • 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
    • B29L2007/002—Panels; Plates; Sheets

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

Abstract

본 발명은 두께균일성 및 표면평활성이 우수한 이축배향 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 연신 단계가, 총 종연신비가 3.5배 이상 및 종연신쉬트의 결정화에너지가 15J/g 이상이 되도록 2단 종연신을 행하되 쉬트의 유리전이온도 (Tg)+50℃ 내지 140℃의 온도 범위에서 제2단 종연신을 행하고, 그 온도로부터 105℃ 이상의 차이만큼 급속 냉각시킨 후 3.5 내지 5.0배의 연신비로 횡연신하는 것을 특징으로 한다.

Description

이축 배향 폴리에스테르 필름의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 한 태양에 따르는 폴리에스테르 필름의 2단 종연신 장치의 개략도이다.

Claims (2)

  1. 폴리에스테르 수지를 용융 압출하고 미연신 쉬트를 종방향 및 횡방향으로 연신하는 단계를 포함하는 이축배향 폴리에스테르필름의 제조방법에 있어서, 상기 연신 단계가, 총 종연신비가 3.5배 이상이고 종연신쉬트의 결정화에너지가 15J/g 이상이 되도록 2단 종연신을 행하되, 다음 식(1)의 온도에서 제2단 종연신을 행하고, 다음 식(2)의 냉각온도까지 급속 냉각시킨 후, 3.5 내지 5.0배의 연신비로 횡연신하는 것을 특징으로 하는 이축 배향 폴리에스테르 필름의 제조방법:
    Tg+50℃≤제2단 종연신온도≤140℃ (1)
    냉각온도≤제2단 종연신온도-105℃ (2)
    상기 식에서, Tg는 쉬트의 유리전이온도이다.
  2. 제1항에 있어서, 상기 종연신쉬트의 비중이 1.35 이하가 되도록 하는 것을 특징으로 하는 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950001132A 1995-01-24 1995-01-24 이축 배향 폴리에스테르 필름의 제조방법 Expired - Fee Related KR0173732B1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950001132A KR0173732B1 (ko) 1995-01-24 1995-01-24 이축 배향 폴리에스테르 필름의 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950001132A KR0173732B1 (ko) 1995-01-24 1995-01-24 이축 배향 폴리에스테르 필름의 제조방법

Publications (2)

Publication Number Publication Date
KR960029068A true KR960029068A (ko) 1996-08-17
KR0173732B1 KR0173732B1 (ko) 1999-04-01

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ID=19407120

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950001132A Expired - Fee Related KR0173732B1 (ko) 1995-01-24 1995-01-24 이축 배향 폴리에스테르 필름의 제조방법

Country Status (1)

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KR (1) KR0173732B1 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100369442B1 (ko) * 1998-11-20 2003-03-28 에스케이씨 주식회사 이축배향 폴리에스테르 필름의 제조방법

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