DE2336228A1 - Biaxial orientierte polyaethylenterephthalatfolie und verfahren zu ihrer herstellung - Google Patents

Biaxial orientierte polyaethylenterephthalatfolie und verfahren zu ihrer herstellung

Info

Publication number
DE2336228A1
DE2336228A1 DE19732336228 DE2336228A DE2336228A1 DE 2336228 A1 DE2336228 A1 DE 2336228A1 DE 19732336228 DE19732336228 DE 19732336228 DE 2336228 A DE2336228 A DE 2336228A DE 2336228 A1 DE2336228 A1 DE 2336228A1
Authority
DE
Germany
Prior art keywords
film
polyethylene terephthalate
longitudinal direction
transverse direction
range
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.)
Withdrawn
Application number
DE19732336228
Other languages
German (de)
English (en)
Inventor
Maurice Edwin Beckham
Keith Douglas Dodson
William Harry Moody
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.)
Celanese Corp
Original Assignee
Celanese Corp
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 Celanese Corp filed Critical Celanese Corp
Publication of DE2336228A1 publication Critical patent/DE2336228A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
DE19732336228 1972-07-19 1973-07-17 Biaxial orientierte polyaethylenterephthalatfolie und verfahren zu ihrer herstellung Withdrawn DE2336228A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US27307172A 1972-07-19 1972-07-19

Publications (1)

Publication Number Publication Date
DE2336228A1 true DE2336228A1 (de) 1974-02-07

Family

ID=23042423

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732336228 Withdrawn DE2336228A1 (de) 1972-07-19 1973-07-17 Biaxial orientierte polyaethylenterephthalatfolie und verfahren zu ihrer herstellung

Country Status (5)

Country Link
JP (1) JPS5635530B2 (enExample)
CA (1) CA1013913A (enExample)
DE (1) DE2336228A1 (enExample)
FR (1) FR2192904B1 (enExample)
GB (1) GB1433344A (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005845A1 (en) * 1978-06-05 1979-12-12 International Business Machines Corporation Method and apparatus for manufacturing magnetic media
EP0024499A1 (en) * 1979-06-25 1981-03-11 Teijin Limited Biaxially oriented wholly aromatic polyester film and process for producing same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7800122A (nl) * 1978-01-05 1979-07-09 Philips Nv Magnetische registratieband en drager voor een magnetische registratieband.
JPS54107313A (en) * 1978-02-09 1979-08-23 Sony Corp Magnetic recording medium
US4436894A (en) * 1980-07-31 1984-03-13 Teijin Limited Novel wholly aromatic copolyester, process for production thereof, and film melt-shaped therefrom
JPS58153232A (ja) * 1982-03-05 1983-09-12 Toray Ind Inc 磁気記録媒体
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
US4508782A (en) * 1983-12-19 1985-04-02 Toray Industries, Inc. Base film for magnetic recording tape with F-5 values of 9-15 Kg/mm2
US4546036A (en) * 1983-12-22 1985-10-08 Minnesota Mining And Manufacturing Company Magnetic recording medium having opaque polyester film base

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US838708A (en) * 1904-08-15 1906-12-18 Robert Gorton Garter.
US2823421A (en) * 1952-05-12 1958-02-18 Du Pont Stretching of polyethylene terephthalate film
IT577841A (enExample) * 1956-09-12
US3257489A (en) * 1961-11-28 1966-06-21 Du Pont Process for improving gauge of organic, thermoplastic, crystallizable polymeric film by stretching during heat treating
GB1083665A (en) * 1965-03-05 1967-09-20 Ici Ltd Biaxially oriented polyethylene terephthalate films
US3432591A (en) * 1966-10-21 1969-03-11 Du Pont Biaxially oriented heat set film of high molecular weight polyethylene terephthalate
US3627579A (en) * 1969-11-18 1971-12-14 Du Pont Unidirectionally oriented film structure of polyethylene terephthalate
JPS5210909B2 (enExample) * 1971-08-05 1977-03-26

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005845A1 (en) * 1978-06-05 1979-12-12 International Business Machines Corporation Method and apparatus for manufacturing magnetic media
EP0024499A1 (en) * 1979-06-25 1981-03-11 Teijin Limited Biaxially oriented wholly aromatic polyester film and process for producing same

Also Published As

Publication number Publication date
JPS5635530B2 (enExample) 1981-08-18
GB1433344A (en) 1976-04-28
FR2192904A1 (enExample) 1974-02-15
CA1013913A (en) 1977-07-19
FR2192904B1 (enExample) 1977-12-23
JPS4944083A (enExample) 1974-04-25

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Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
OD Request for examination
8130 Withdrawal