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KR970010076A - Manufacturing method of biaxially oriented polyester film for magnetic recording medium - Google Patents

Manufacturing method of biaxially oriented polyester film for magnetic recording medium Download PDF

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Publication number
KR970010076A
KR970010076A KR1019950025123A KR19950025123A KR970010076A KR 970010076 A KR970010076 A KR 970010076A KR 1019950025123 A KR1019950025123 A KR 1019950025123A KR 19950025123 A KR19950025123 A KR 19950025123A KR 970010076 A KR970010076 A KR 970010076A
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South Korea
Prior art keywords
component
magnetic recording
polyester film
recording medium
diameter
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KR1019950025123A
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Korean (ko)
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KR0170799B1 (en
Inventor
임대우
김정락
태경섭
김학진
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박홍기
제일합섬 주식회사
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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
    • B29C55/10—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)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

본 발명은 평활도, 미끄럼도 및 전자변환 특성이 우수한 자기기록 매체용 폴리에스테르 필름의 제조방법에 관한 것으로서, 디메틸테레프탈레이트와 에틸렌글리콜을 주성분으로 하여 폴리에스테르 제조시 제1성분으로 모오스 경도가 7 이상이고, 평균입경이 0.01~0.1㎛인 알루미늄 실리케이트 입자를 디메틸테레프탈레이트에 대해 0.1~1.0중량%, 제2성분으로 평균입경이 0.27~0.9㎛인 칼사이트 육면체 탄산칼슘, 무정형 탄산칼슘 또는 할로우 타입 구형시리카 입자를 디메틸테레플라레이트에 대해 0.01~1.0중량%를 하기 일반식(1) 및 (2)를 만족하는 입자분포비율로 첨가하여 중합한 후 270~300℃로 용융 압출하여 40~70℃로 냉각, 고화시켜 비결정성의 미연신 필름을 얻었으며, 이를 90~120℃에서 3.0~4.0배의 종방향 연신을 하고, 180~220℃에서 4.0~5.0배의 횡방향 연신을 한 후, 200~240℃에서 열처리를 실시하여 제조하였다.The present invention relates to a method for producing a polyester film for a magnetic recording medium having excellent smoothness, slipperiness, and electron conversion characteristics, wherein the dimethyl terephthalate and ethylene glycol are the main components in the production of polyester, and the first hardness is 7 or more. Aluminum silicate particles having an average particle diameter of 0.01 to 0.1 μm, 0.1 to 1.0 wt% of dimethyl terephthalate, and calcitic hexahedral calcium carbonate, amorphous calcium carbonate or hollow type spherical particles having an average particle diameter of 0.27 to 0.9 μm as a second component. The silica particles were added in an amount of 0.01 to 1.0% by weight based on the particle distribution ratio satisfying the following general formulas (1) and (2), followed by polymerization, followed by melt extrusion at 270 to 300 ° C to 40 to 70 ° C. After cooling and solidifying, an amorphous non-stretched film was obtained, which was stretched 3.0-4.0 times in the longitudinal direction at 90-120 ° C. and 4.0-5.0 times in the lateral direction at 180-220 ° C. Then, it was prepared by performing a heat treatment at 200 ~ 240 ℃.

1.0≤γ≤2.0 (1)1.0≤γ≤2.0 (1)

γ=d90/d10 (2)γ = d90 / d10 (2)

여기서, d10은 입자의 누적 중량이 전체 중량을 기준으로 하여 10% 첨가될때의 미세입자의 직경이며, d90은 입자의 누적 중량이 전체 중량을 기준으로 하여 90% 첨가될때의 미세입자의 직경이며, (d100은 가장 큰 크기의 직경을 나타낸다.) γ은 입자크기의 분포비이다.Here, d10 is the diameter of the microparticles when the cumulative weight of the particles is added 10% based on the total weight, d90 is the diameter of the microparticles when the cumulative weight of the particles is added 90% based on the total weight, (d100 represents the largest diameter.) γ is the distribution ratio of particle size.

Description

자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법Manufacturing method of biaxially oriented polyester film for magnetic recording medium

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

제1도는 본 발명에 의해 제조된 필름의 주행성을 평가하는 주행계를 표시한 도면이다.1 is a diagram showing a traveling system for evaluating the running performance of a film produced according to the present invention.

Claims (7)

디메틸테레프탈레이트 또는 테레프탈산과 에틸렌글리콜을 주성분으로 하여 폴리에스테르 제조시 제1성분으로 모오스 경도가 7 이상이고, 평균입경이 0.01~0.1㎛인 알루미늄 실리케이트 입자를, 제2성분으로 평균입경이 0.27~0.9㎛인 무기입자를 첨가하여 폴리에스테르를 중합한 후 270~300℃로 용융 압출하여 40~70℃로 냉각, 고화시켜 비결정성의 미연신 필름을 얻었으며, 이를 90~120℃에서 3.0~4.0배의 종방향 연신을 하고, 180~220℃에서 4.0~5.0배의 횡방향 연신을 한 후, 200~240℃에서 열처리를 실시함을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.As a first component, polyester silicate particles having a MOS hardness of 7 or more and an average particle diameter of 0.01 to 0.1 탆 and an average particle diameter of 0.27 to 0.9 are used as the second component when the polyester is mainly manufactured with dimethyl terephthalate or terephthalic acid and ethylene glycol. After the polymerization of the polyester by adding the inorganic particles of ㎛ and melt-extruded to 270 ~ 300 ℃, cooled and solidified to 40 ~ 70 ℃ to obtain an amorphous non-oriented film, 3.0 to 4.0 times at 90 ~ 120 ℃ The longitudinal stretching of the film, 4.0-5.0 times transverse stretching at 180-220 degreeC, and heat processing are performed at 200-240 degreeC, The manufacturing method of the biaxially-oriented polyester film for magnetic recording media characterized by the above-mentioned. 제1항에 있어서, 제1성분으로 사용된 알루미늄 실리케이트 입자는 디메틸테레프탈레이트 또는 테레프탈산에 대해 0.1~1.0중량% 사용함을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The method of manufacturing a biaxially oriented polyester film for a magnetic recording medium according to claim 1, wherein the aluminum silicate particles used as the first component are used in an amount of 0.1 to 1.0% by weight based on dimethyl terephthalate or terephthalic acid. 제1항에 있어서, 제2성분으로 사용된 무기입자는 칼사이트 육면체 탄산칼슘임을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The method of manufacturing a biaxially oriented polyester film for a magnetic recording medium according to claim 1, wherein the inorganic particles used as the second component are calcite hexahedral calcium carbonate. 제1항에 있어서, 제2성분으로 사용된 무기입자는 무정형 탄산칼슘임을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The method for producing a biaxially oriented polyester film for magnetic recording medium according to claim 1, wherein the inorganic particles used as the second component are amorphous calcium carbonate. 제1항에 있어서, 제2성분으로 사용된 무기입자는 할로우타입 구형실리카임을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The method for producing a biaxially oriented polyester film for magnetic recording medium according to claim 1, wherein the inorganic particles used as the second component are hollow type spherical silica. 제1항에 있어서, 제2성분으로 사용된 무기입자는 디메틸테레프탈레이트 또는 테레프탈산에 대해 0.01~1.0중량% 사용함을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The method for producing a biaxially oriented polyester film for magnetic recording media according to claim 1, wherein the inorganic particles used as the second component are used in an amount of 0.01 to 1.0% by weight based on dimethyl terephthalate or terephthalic acid. 제1항에 있어서, 제1성분 및 제2성분으로 사용된 입자는 하기 일반식(1) 및 (2)를 만족하는 입자분포비로 첨가됨을 특징으로 하는 자기기록 매체용 이축배향 폴리에스테르 필름의 제조방법.The biaxially oriented polyester film for magnetic recording medium according to claim 1, wherein the particles used as the first component and the second component are added at a particle distribution ratio satisfying the following general formulas (1) and (2). Way. 1.0≤γ≤2.0 (1)1.0≤γ≤2.0 (1) γ=d90/d10 (2)γ = d90 / d10 (2) 여기서, d10은 입자의 누적 중량이 전체 중량을 기준으로 하여 10% 첨가될때의 미세입자의 직경이며, d90은 입자의 누적 중량이 전체 중량을 기준으로 하여 90% 첨가될때의 미세입자의 직경이며, (d100은 가장 큰 크기의 직경을 나타낸다.) γ은 입자크기의 분포비이다.Here, d10 is the diameter of the microparticles when the cumulative weight of the particles is added 10% based on the total weight, d90 is the diameter of the microparticles when the cumulative weight of the particles is added 90% based on the total weight, (d100 represents the largest diameter.) γ is the distribution ratio of particle size. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950025123A 1995-08-16 1995-08-16 Manufacturing method of biaxially oriented polyester film for magnetic recording medium KR0170799B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100558566B1 (en) * 1998-01-03 2006-06-16 도레이새한 주식회사 Biaxially Stretched Polyester Film for Magnetic Recording Media

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000027126A (en) * 1998-10-27 2000-05-15 장용균 Polyester film for support layer of photoresist film and process for prducing the same
KR100370557B1 (en) * 1998-10-27 2003-03-17 에스케이씨 주식회사 Polyester film for base film of photoresist film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100558566B1 (en) * 1998-01-03 2006-06-16 도레이새한 주식회사 Biaxially Stretched Polyester Film for Magnetic Recording Media

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