JPH024060B2 - - Google Patents

Info

Publication number
JPH024060B2
JPH024060B2 JP57033801A JP3380182A JPH024060B2 JP H024060 B2 JPH024060 B2 JP H024060B2 JP 57033801 A JP57033801 A JP 57033801A JP 3380182 A JP3380182 A JP 3380182A JP H024060 B2 JPH024060 B2 JP H024060B2
Authority
JP
Japan
Prior art keywords
film
magnetic
stretching
magnetic recording
value
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
JP57033801A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58153232A (ja
Inventor
Tomoyuki Minami
Kazuhiro Tanaka
Takeshi Nishioka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP57033801A priority Critical patent/JPS58153232A/ja
Priority to US06/425,960 priority patent/US4497865A/en
Priority to DE8282306263T priority patent/DE3277416D1/de
Priority to EP19820306263 priority patent/EP0086302B1/en
Publication of JPS58153232A publication Critical patent/JPS58153232A/ja
Priority to US06/654,599 priority patent/US4546030A/en
Priority to US06/748,295 priority patent/US4587071A/en
Publication of JPH024060B2 publication Critical patent/JPH024060B2/ja
Granted legal-status Critical Current

Links

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
    • B29C55/16—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial simultaneously
    • 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
    • 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
    • B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
    • B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
    • B29C55/065—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed in several stretching steps
    • 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
    • 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
    • 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)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
JP57033801A 1982-02-17 1982-03-05 磁気記録媒体 Granted JPS58153232A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP57033801A JPS58153232A (ja) 1982-03-05 1982-03-05 磁気記録媒体
US06/425,960 US4497865A (en) 1982-02-17 1982-09-28 Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom
DE8282306263T DE3277416D1 (en) 1982-02-17 1982-11-24 Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom
EP19820306263 EP0086302B1 (en) 1982-02-17 1982-11-24 Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom
US06/654,599 US4546030A (en) 1982-02-17 1984-09-26 Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom
US06/748,295 US4587071A (en) 1982-02-17 1985-06-24 Production of polyethylene terephthalate film for magnetic recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57033801A JPS58153232A (ja) 1982-03-05 1982-03-05 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS58153232A JPS58153232A (ja) 1983-09-12
JPH024060B2 true JPH024060B2 (enrdf_load_stackoverflow) 1990-01-25

Family

ID=12396572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57033801A Granted JPS58153232A (ja) 1982-02-17 1982-03-05 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS58153232A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0619826B2 (ja) * 1984-03-07 1994-03-16 三菱化成株式会社 磁気記録材料及びその製造方法
JPH0756689B2 (ja) * 1984-09-12 1995-06-14 帝人株式会社 二軸延伸ポリエステルフイルム
CN110815763B (zh) * 2019-11-19 2021-06-08 青岛蓝科途膜材料有限公司 制备高强度高模量的聚烯烃薄膜的设备及方法和高强度高模量的聚烯烃薄膜

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1013913A (en) * 1972-07-19 1977-07-19 Maurice E. Beckham Balanced tensilized polyethylene terephthalate film
JPS5749378B2 (enrdf_load_stackoverflow) * 1974-04-26 1982-10-21
JPS5936851B2 (ja) * 1977-06-21 1984-09-06 東レ株式会社 ポリエステルフイルムの製造法
JPS5522915A (en) * 1978-08-07 1980-02-19 Toray Ind Inc Manufacture of polyester film
JPS5527211A (en) * 1978-08-15 1980-02-27 Toray Ind Inc Producing process of polyester film
US4497865A (en) * 1982-02-17 1985-02-05 Toray Industries, Inc. Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom

Also Published As

Publication number Publication date
JPS58153232A (ja) 1983-09-12

Similar Documents

Publication Publication Date Title
US4497865A (en) Polyethylene terephthalate film, process for the production thereof and magnetic recording medium therefrom
EP2623294A1 (en) Biaxially oriented polyester film and linear magnetic recording medium
EP0090499B1 (en) Magnetic recording medium
JPS59127730A (ja) ２軸配向ポリエチレンナフタレ−トフイルム
EP0174376B1 (en) Heat-resistant film or sheet
JPH024060B2 (enrdf_load_stackoverflow)
JP2629861B2 (ja) 二軸延伸ポリエチレンテレフタレートフィルム
JP2001121602A (ja) 二軸配向ポリエステルフィルムとその製造方法
US5645918A (en) Magnetic recording medium having an aromatic polyamide substrate
JPH05212788A (ja) 二軸配向熱可塑性樹脂積層フィルムおよびその製造方法
JPH11302408A (ja) 二軸配向ポリエステルフィルム
JPH09169860A (ja) 芳香族ポリアミドフィルム
JPH024059B2 (enrdf_load_stackoverflow)
JPH0373409A (ja) 金属薄膜型磁気記録媒体
JP2964961B2 (ja) 芳香族ポリアミドフィルムおよび磁気記録媒体
JP2870080B2 (ja) ビデオカセットテープ
JP2001030350A (ja) 二軸配向ポリエステルフィルム
JPH05261805A (ja) 二軸配向ポリエチレン―２，６―ナフタレートフィルム及びその製造方法
JP3317411B2 (ja) ポリスチレン系フィルム
JPH03140336A (ja) 二軸配向熱可塑性樹脂フイルム
JP2803274B2 (ja) 酸化物塗布型磁気記録媒体
JPH0386916A (ja) メタル塗布型磁気記録媒体
JPH04278350A (ja) 二軸配向積層ポリエステルフイルム
JPH0157414B2 (enrdf_load_stackoverflow)
JP2001049005A (ja) 二軸配向ポリエステルフィルムとその製造方法