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KR940701575A - 2축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크 - Google Patents

2축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크

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Publication number
KR940701575A
KR940701575A KR1019930703707A KR930703707A KR940701575A KR 940701575 A KR940701575 A KR 940701575A KR 1019930703707 A KR1019930703707 A KR 1019930703707A KR 930703707 A KR930703707 A KR 930703707A KR 940701575 A KR940701575 A KR 940701575A
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KR
South Korea
Prior art keywords
biaxially oriented
base film
oriented base
film
less
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Granted
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KR1019930703707A
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English (en)
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KR100213530B1 (ko
Inventor
다까오 쥬죠
이에야스 고바야시
히사시 하마노
마사미 엣쮸
Original Assignee
이다가끼 히로시
데이진 가부시끼가이샤
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Publication of KR940701575A publication Critical patent/KR940701575A/ko
Application granted granted Critical
Publication of KR100213530B1 publication Critical patent/KR100213530B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • 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
    • 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
    • B29C55/005—Shaping by stretching, e.g. drawing through a die; Apparatus therefor characterised by the choice of materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G11B5/825—Disk carriers flexible discs
    • 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
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/91—Product with molecular orientation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y10T428/24372—Particulate matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Paints Or Removers (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Laminated Bodies (AREA)

Abstract

폴리에틸렌-2,6-나프탈렌 디카르복실레이트를 소재로하는 2축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크를 제공한다. 이 베이스 필름 및 플로피 디스크는, 고속회전에 있어서도 자기 헤드와 일정조건에 있어서의 접촉을 가능케하는, 필름면의 바이브레이션을 억제한, 그리고 뛰어난 점탄성을 구비하고 있는 점에서 특징적이다.

Description

2축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (12)

  1. (a) 폴리에틸렌-2,6-나프탈렌 디카르복실레이트로 실질적으로 구성되고, (b) 필름 표면의 돌기의 높이(h, 단위 nm)와 개수가 하기식(1), (2) 및 (3)
    를 만족시키고, (c) 면배향계수(NS)와 평균굴절율(n)이 하기식(4) 및 (5)
    을 만족시키고, (d) 필름내면의 어떤 방향에 있어서의 주파수 110Hz, 온도 60℃에서의 점탄성 계수(tan δ)가 0.08이하이고, (e) 필름면내의 어떤 방향에 있어서의 60℃, 80%RH의 분위기중, 무하중, 72시간 열처리시의 열수축 율이 0.05%이하이고, 그리고 105℃, 무하중, 0.5시간 열처리시의 열수축율이 0.3%이하인, 것을 특징으로 하는 고밀도 자기 기록 플로피 디스크용 2축 배향 베이스 필름.
  2. 제1항에 있어서, 필름 표면의 돌기의 높이(h, 단위 nm)와 개수가 하기식(1)-1, (2)-1 및 (3)-1
    를 만족시키는 2축 배향 베이스 필름.
  3. 제1항에 있어서, 면배향계수(NS)와 평균 굴절율()이 하기식 (4)-1
    및 상기식(5)를 만족시키는 2축 배향 베이스 필름.
  4. 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 점탄성계수(tan δ)가 0.06이하인 2축 배향 베이스 필름.
  5. 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 60℃, 80% RH의 분위기중, 무하중 72시간 열처리시의 열수축율이 0.02%이하인 2축 배향 베이스 필름.
  6. 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 105℃, 무하중 0.5시간 열처리시의 열수축율이 0.2%이하인 2축 배향 베이스 필름.
  7. 제1항에 있어서, 필름면내에 있어서의 온도 팽창계수의 최대치와 최소치의 차가 8×10-6/℃이하인 2축 배향 베이스 필름.
  8. 제1항에 있어서 필름면내에 있어서의 습도팽창계수의 최대치와 최소치의 차가 4×10-6/%RH이하인 2축 배향 베이스 필름.
  9. 제1항에 있어서, 필름의 늘어짐이 15mm이하인 2축 배향 베이스 필름.
  10. 제1항에 있어서, 필름 두께의 불균일이 4% 이하인 2축 배향 베이스 필름.
  11. 제1항의 2축 배향 베이스 필름 및 이 베이스 필름의 양표면상의 자기층으로 이루어지는 것을 특징으로 하는 고밀도 자기 기록용 플로피 디스크.
  12. 제1항의 2축 배향 베이스 필름의 고밀도 자기 기록용 플로피 디스크에의 사용.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930703707A 1992-04-02 1993-04-02 2 축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크 Expired - Fee Related KR100213530B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8085692A JP3306088B2 (ja) 1992-04-02 1992-04-02 高密度磁気記録媒体
JP92-80856 1992-04-02
PCT/JP1993/000422 WO1993020553A1 (fr) 1992-04-02 1993-04-02 Support a orientation biaxiale et disquette fabriquee a partir dudit support et destinee a l'enregistrement magnetique en haute densite

Publications (2)

Publication Number Publication Date
KR940701575A true KR940701575A (ko) 1994-05-28
KR100213530B1 KR100213530B1 (ko) 1999-08-02

Family

ID=13729990

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930703707A Expired - Fee Related KR100213530B1 (ko) 1992-04-02 1993-04-02 2 축 배향 베이스 필름 및 이것을 사용한 고밀도 자기 기록용 플로피 디스크

Country Status (6)

Country Link
US (1) US5534323A (ko)
EP (1) EP0593773B1 (ko)
JP (1) JP3306088B2 (ko)
KR (1) KR100213530B1 (ko)
DE (1) DE69311664T2 (ko)
WO (1) WO1993020553A1 (ko)

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JPH07285173A (ja) * 1994-04-20 1995-10-31 Toray Ind Inc 電気絶縁用二軸延伸ポリエチレンナフタレートフィルム
EP0724947B1 (en) * 1994-08-30 2002-05-08 Toray Industries, Inc. Biaxially oriented polyester film and process for production thereof
JPH08132523A (ja) * 1994-11-09 1996-05-28 Toray Ind Inc 低熱収縮性ポリエステルフィルム
JPH08164558A (ja) * 1994-12-15 1996-06-25 Toray Ind Inc ポリエステルフィルム
US5968627A (en) * 1998-01-15 1999-10-19 Flextor, Inc. Metal foil disk for high areal density recording in environments of high mechanical shock
US6485810B1 (en) 1998-10-09 2002-11-26 Teijin Limited Biaxially oriented polyester film and flexible disk
US6162528A (en) * 1998-12-16 2000-12-19 Verbatim Corporation Magnetic recording medium and method for manufacturing the same
JP3813929B2 (ja) * 2000-12-11 2006-08-23 帝人株式会社 二軸配向ポリエステルフィルムの製造法
CN100593467C (zh) * 2004-05-14 2010-03-10 帝人杜邦薄膜日本有限公司 取向聚酯膜
JP2006114152A (ja) * 2004-10-15 2006-04-27 Fuji Photo Film Co Ltd 磁気記録媒体
JP5430632B2 (ja) * 2011-10-15 2014-03-05 三菱樹脂株式会社 ポリエステルフィルムロール
JP5962648B2 (ja) * 2012-01-24 2016-08-03 東レ株式会社 ポリエステルフィルムおよびその製造方法
JP6011539B2 (ja) * 2012-08-21 2016-10-19 東レ株式会社 二軸配向ポリエチレンテレフタレートフィルムおよびその製造方法
JP7583356B2 (ja) * 2019-09-02 2024-11-14 東洋紡株式会社 二軸配向ポリエステルフィルム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501344A (en) * 1967-07-28 1970-03-17 Eastman Kodak Co Magnetic recording tape supported on poly(ethylene 2,6 - naphthalenedicarboxylate)
JPS58215722A (ja) * 1982-06-08 1983-12-15 Diafoil Co Ltd 磁気記録体用ポリエステルフイルム
JPH0697500B2 (ja) * 1985-10-08 1994-11-30 帝人株式会社 高密度磁気記録媒体
JPS62124926A (ja) * 1985-11-27 1987-06-06 Teijin Ltd ポリエステルフイルム
JPH07119055B2 (ja) * 1988-04-19 1995-12-20 ダイアホイルヘキスト株式会社 二軸延伸ポリエステルフィルム
US5051292A (en) * 1989-02-01 1991-09-24 Teijin Limited Biaxially oriented film of polyethylene-2,6-naphthalate
US5270096A (en) * 1990-04-18 1993-12-14 Teijin Limited Biaxially oriented polyester film for magnetic recording media
JP2675217B2 (ja) * 1991-10-31 1997-11-12 帝人株式会社 ポリエチレン―２，６―ナフタレートフィルム

Also Published As

Publication number Publication date
EP0593773A1 (en) 1994-04-27
US5534323A (en) 1996-07-09
JPH05282657A (ja) 1993-10-29
DE69311664D1 (de) 1997-07-24
DE69311664T2 (de) 1997-12-11
WO1993020553A1 (fr) 1993-10-14
JP3306088B2 (ja) 2002-07-24
EP0593773A4 (en) 1994-03-21
EP0593773B1 (en) 1997-06-18
KR100213530B1 (ko) 1999-08-02

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