GB2134442B - Polyester film for magnetic recording media - Google Patents

Polyester film for magnetic recording media

Info

Publication number
GB2134442B
GB2134442B GB08400510A GB8400510A GB2134442B GB 2134442 B GB2134442 B GB 2134442B GB 08400510 A GB08400510 A GB 08400510A GB 8400510 A GB8400510 A GB 8400510A GB 2134442 B GB2134442 B GB 2134442B
Authority
GB
United Kingdom
Prior art keywords
magnetic recording
polyester film
recording media
media
polyester
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
Application number
GB08400510A
Other languages
English (en)
Other versions
GB2134442A (en
GB8400510D0 (en
Inventor
Tateo Kanesaki
Shigeo Utsumi
Kichinojyo Tomitaka
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.)
Diafoil Co Ltd
Original Assignee
Diafoil Co Ltd
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
Priority claimed from JP58006030A external-priority patent/JPS59140028A/ja
Priority claimed from JP58077928A external-priority patent/JPS59203232A/ja
Application filed by Diafoil Co Ltd filed Critical Diafoil Co Ltd
Publication of GB8400510D0 publication Critical patent/GB8400510D0/en
Publication of GB2134442A publication Critical patent/GB2134442A/en
Application granted granted Critical
Publication of GB2134442B publication Critical patent/GB2134442B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C55/02—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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Magnetic Record Carriers (AREA)
GB08400510A 1983-01-18 1984-01-10 Polyester film for magnetic recording media Expired GB2134442B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58006030A JPS59140028A (ja) 1983-01-18 1983-01-18 ポリエステルフイルムの製造方法
JP58077928A JPS59203232A (ja) 1983-05-02 1983-05-02 磁気記録体用ポリエステルフイルム

Publications (3)

Publication Number Publication Date
GB8400510D0 GB8400510D0 (en) 1984-02-15
GB2134442A GB2134442A (en) 1984-08-15
GB2134442B true GB2134442B (en) 1987-05-28

Family

ID=26340106

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08400510A Expired GB2134442B (en) 1983-01-18 1984-01-10 Polyester film for magnetic recording media

Country Status (3)

Country Link
DE (1) DE3401625A1 (fr)
FR (1) FR2539349B1 (fr)
GB (1) GB2134442B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2168911B (en) * 1984-12-29 1989-06-07 Tdk Corp Magnetic recording medium
EP0261430B1 (fr) * 1986-08-27 1999-11-24 Teijin Limited Film en polyester orienté biaxialement
EP0467243A3 (en) * 1990-07-16 1992-08-19 Diafoil Company, Limited Novel high strength polyester film and process for preparing the same
FR2682915B1 (fr) * 1991-10-24 1997-09-19 Rhone Poulenc Films Films en polyester semi-cristallins orientes, leur procede d'obtention et leur emploi comme support de revetement magnetique
CA2249766A1 (fr) * 1997-10-14 1999-04-14 Kenichi Etou Pellicules de polyester a orientation biaxiale et methodes de production
US6306496B1 (en) * 1997-12-11 2001-10-23 Teijin Limited Biaxially oriented polyester film
WO2000063001A1 (fr) * 1999-04-19 2000-10-26 Toray Industries, Inc. Film polyester a orientation biaxiale, procede de production dudit film et support d'enregistrement magnetique
FR2944230B1 (fr) 2009-04-09 2011-04-08 Michelin Soc Tech Pneumatique a armatures de carcasse radiale
FR2944227B1 (fr) 2009-04-09 2013-08-16 Soc Tech Michelin Stratifie multicouches pour bandage pneumatique
FR2964907B1 (fr) 2010-09-21 2012-09-28 Michelin Soc Tech Pneumatique comportant une armature de protection
FR2964906B1 (fr) 2010-09-21 2012-09-28 Michelin Soc Tech Pneumatique comportant une armature de protection
FR2964905A1 (fr) 2010-09-21 2012-03-23 Michelin Soc Tech Pneumatique comportant une armature de protection
FR2966082B1 (fr) 2010-10-13 2012-10-26 Michelin Soc Tech Pneumatique a armature de carcasse radiale pour vehicule de tourisme.
FR2967611B1 (fr) 2010-10-14 2015-04-17 Michelin Soc Tech Pneumatique dont les flancs sont renforces par un film de polymere thermoplastique
FR2987310B1 (fr) 2012-02-29 2014-03-21 Michelin & Cie Stratifie multicouche utilisable pour le renforcement d'une ceinture de pneumatique
FR3013625B1 (fr) 2013-11-28 2016-06-24 Michelin & Cie Element de renfort a section aplatie
FR3013622B1 (fr) 2013-11-28 2016-06-24 Michelin & Cie Procede de traitement d'un element de renfort a section aplatie

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3177277A (en) * 1957-05-10 1965-04-06 Ici Ltd Process for the production of biaxially oriented polyethylene terephthalate film
DE1194561B (de) * 1956-05-18 1965-06-10 Ici Ltd Verfahren zur Herstellung eines biaxial orientierten Polyaethylenterephthalatfilms mit hoher Festigkeit in Laengsrichtung
BE581665A (fr) * 1956-12-20 1900-01-01
US2975484A (en) * 1959-09-02 1961-03-21 Du Pont Process for producing films
FR2232426B2 (fr) * 1973-06-08 1976-06-11 Cellophane Sa
GB1430291A (en) * 1973-04-17 1976-03-31 Teijin Ltd Process for the preparation of a biaxially oriented polyester film
JPS50102303A (fr) * 1974-01-11 1975-08-13
GB1547241A (en) * 1975-07-18 1979-06-06 Mitsubishi Chem Ind Polyester film for making magnetic tape
GB1591582A (en) * 1977-03-01 1981-06-24 Teijin Ltd Polyester film having slipperiness
JPS54164107A (en) * 1978-06-16 1979-12-27 Tdk Electronics Co Ltd Base for magnetic recording tape
JPS5522915A (en) * 1978-08-07 1980-02-19 Toray Ind Inc Manufacture of polyester film
JPS5641525A (en) * 1979-09-11 1981-04-18 Diafoil Co Ltd Polyester film for magnetic tape
JPS5766936A (en) * 1980-10-15 1982-04-23 Teijin Ltd Polyester film
JPS57130234A (en) * 1981-02-02 1982-08-12 Fuji Photo Film Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
DE3401625C2 (fr) 1988-12-29
GB2134442A (en) 1984-08-15
FR2539349A1 (fr) 1984-07-20
GB8400510D0 (en) 1984-02-15
DE3401625A1 (de) 1984-10-04
FR2539349B1 (fr) 1986-12-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990110