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 디스크Info
- 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
- Authority
- KR
- South Korea
- Prior art keywords
- biaxially oriented
- base film
- oriented base
- film
- less
- Prior art date
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Classifications
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- 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)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Paints Or Removers (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
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (12)
- (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.
- 제1항에 있어서, 필름 표면의 돌기의 높이(h, 단위 nm)와 개수가 하기식(1)-1, (2)-1 및 (3)-1를 만족시키는 2축 배향 베이스 필름.
- 제1항에 있어서, 면배향계수(NS)와 평균 굴절율()이 하기식 (4)-1및 상기식(5)를 만족시키는 2축 배향 베이스 필름.
- 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 점탄성계수(tan δ)가 0.06이하인 2축 배향 베이스 필름.
- 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 60℃, 80% RH의 분위기중, 무하중 72시간 열처리시의 열수축율이 0.02%이하인 2축 배향 베이스 필름.
- 제1항에 있어서, 필름면내의 어떤 방향에 있어서의 105℃, 무하중 0.5시간 열처리시의 열수축율이 0.2%이하인 2축 배향 베이스 필름.
- 제1항에 있어서, 필름면내에 있어서의 온도 팽창계수의 최대치와 최소치의 차가 8×10-6/℃이하인 2축 배향 베이스 필름.
- 제1항에 있어서 필름면내에 있어서의 습도팽창계수의 최대치와 최소치의 차가 4×10-6/%RH이하인 2축 배향 베이스 필름.
- 제1항에 있어서, 필름의 늘어짐이 15mm이하인 2축 배향 베이스 필름.
- 제1항에 있어서, 필름 두께의 불균일이 4% 이하인 2축 배향 베이스 필름.
- 제1항의 2축 배향 베이스 필름 및 이 베이스 필름의 양표면상의 자기층으로 이루어지는 것을 특징으로 하는 고밀도 자기 기록용 플로피 디스크.
- 제1항의 2축 배향 베이스 필름의 고밀도 자기 기록용 플로피 디스크에의 사용.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
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 (en) | 1992-04-02 | 1993-04-02 | Biaxially oriented base film and floppy disk for high-density magnetic recording made therefrom |
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 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) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
CN1069260C (zh) * | 1994-08-30 | 2001-08-08 | 东丽株式会社 | 双轴拉伸聚酯薄膜及其制造方法 |
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 |
KR100554862B1 (ko) | 1998-10-09 | 2006-02-24 | 데이진 가부시키가이샤 | 2축 배향 폴리에스테르 필름, 및 이를 포함하는 적층 폴리에스테르 필름 및 가요성 디스크 |
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 |
DE602005016549D1 (de) * | 2004-05-14 | 2009-10-22 | Teijin Dupont Films Japan Ltd | Gestreckte polyesterfolie für ein flexibles electronic-substrat |
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 |
CN104053535B (zh) * | 2012-01-24 | 2016-08-24 | 东丽株式会社 | 聚酯膜及其制造方法 |
WO2014030474A1 (ja) * | 2012-08-21 | 2014-02-27 | 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 |
JP2021038388A (ja) * | 2019-09-02 | 2021-03-11 | 東洋紡フイルムソリューション株式会社 | 二軸配向ポリエステルフィルム |
Family Cites Families (8)
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 |
KR960005446B1 (ko) * | 1990-04-18 | 1996-04-25 | 데이진 가부시끼가이샤 | 자기기록매체용 2축배향 폴리에스테르 필림 |
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 |
-
1992
- 1992-04-02 JP JP8085692A patent/JP3306088B2/ja not_active Expired - Fee Related
-
1993
- 1993-04-02 EP EP19930906874 patent/EP0593773B1/en not_active Expired - Lifetime
- 1993-04-02 WO PCT/JP1993/000422 patent/WO1993020553A1/ja active IP Right Grant
- 1993-04-02 KR KR1019930703707A patent/KR100213530B1/ko not_active IP Right Cessation
- 1993-04-02 US US08/157,055 patent/US5534323A/en not_active Expired - Fee Related
- 1993-04-02 DE DE1993611664 patent/DE69311664T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0593773A1 (en) | 1994-04-27 |
DE69311664T2 (de) | 1997-12-11 |
EP0593773A4 (en) | 1994-03-21 |
KR100213530B1 (ko) | 1999-08-02 |
DE69311664D1 (de) | 1997-07-24 |
EP0593773B1 (en) | 1997-06-18 |
WO1993020553A1 (en) | 1993-10-14 |
JP3306088B2 (ja) | 2002-07-24 |
US5534323A (en) | 1996-07-09 |
JPH05282657A (ja) | 1993-10-29 |
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