JPS4944083A - - Google Patents
Info
- Publication number
- JPS4944083A JPS4944083A JP48077973A JP7797373A JPS4944083A JP S4944083 A JPS4944083 A JP S4944083A JP 48077973 A JP48077973 A JP 48077973A JP 7797373 A JP7797373 A JP 7797373A JP S4944083 A JPS4944083 A JP S4944083A
- Authority
- JP
- Japan
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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 of flat articles, e.g. using specially adapted supporting means 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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27307172A | 1972-07-19 | 1972-07-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4944083A true JPS4944083A (US06815460-20041109-C00097.png) | 1974-04-25 |
| JPS5635530B2 JPS5635530B2 (US06815460-20041109-C00097.png) | 1981-08-18 |
Family
ID=23042423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7797373A Expired JPS5635530B2 (US06815460-20041109-C00097.png) | 1972-07-19 | 1973-07-12 |
Country Status (5)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58153232A (ja) * | 1982-03-05 | 1983-09-12 | Toray Ind Inc | 磁気記録媒体 |
| JPS60229229A (ja) * | 1983-12-22 | 1985-11-14 | ミネソタ マイニング アンド マニユフアクチユアリング コンパニ− | 不透明ポリエステルフイルム基板を有する磁気記録用媒体 |
Families Citing this family (8)
| 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 |
| US4208447A (en) * | 1978-06-05 | 1980-06-17 | International Business Machines Corporation | Method for disorienting magnetic particles |
| EP0024499B1 (en) * | 1979-06-25 | 1984-03-07 | Teijin Limited | Biaxially oriented wholly aromatic polyester film and process for producing same |
| US4436894A (en) * | 1980-07-31 | 1984-03-13 | Teijin Limited | Novel wholly aromatic copolyester, process for production thereof, and film melt-shaped therefrom |
| 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 |
| JPS60127440U (ja) * | 1984-02-06 | 1985-08-27 | スズキ株式会社 | 発動発電機の周波数切換装置 |
Citations (8)
| 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 |
| GB838708A (en) * | 1956-09-12 | 1960-06-22 | Ici Ltd | Improved films and their production |
| 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 |
| JPS4825074A (US06815460-20041109-C00097.png) * | 1971-08-05 | 1973-04-02 |
-
1973
- 1973-07-11 CA CA176,175A patent/CA1013913A/en not_active Expired
- 1973-07-12 JP JP7797373A patent/JPS5635530B2/ja not_active Expired
- 1973-07-17 DE DE19732336228 patent/DE2336228A1/de not_active Withdrawn
- 1973-07-18 FR FR7326365A patent/FR2192904B1/fr not_active Expired
- 1973-07-18 GB GB3412373A patent/GB1433344A/en not_active Expired
Patent Citations (8)
| 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 |
| GB838708A (en) * | 1956-09-12 | 1960-06-22 | Ici Ltd | Improved films and their production |
| 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 |
| JPS4825074A (US06815460-20041109-C00097.png) * | 1971-08-05 | 1973-04-02 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58153232A (ja) * | 1982-03-05 | 1983-09-12 | Toray Ind Inc | 磁気記録媒体 |
| JPH024060B2 (US06815460-20041109-C00097.png) * | 1982-03-05 | 1990-01-25 | Toray Industries | |
| JPS60229229A (ja) * | 1983-12-22 | 1985-11-14 | ミネソタ マイニング アンド マニユフアクチユアリング コンパニ− | 不透明ポリエステルフイルム基板を有する磁気記録用媒体 |
| JPH0375935B2 (US06815460-20041109-C00097.png) * | 1983-12-22 | 1991-12-03 | Minnesota Mining & Mfg |
Also Published As
| Publication number | Publication date |
|---|---|
| CA1013913A (en) | 1977-07-19 |
| DE2336228A1 (de) | 1974-02-07 |
| JPS5635530B2 (US06815460-20041109-C00097.png) | 1981-08-18 |
| FR2192904B1 (US06815460-20041109-C00097.png) | 1977-12-23 |
| GB1433344A (en) | 1976-04-28 |
| FR2192904A1 (US06815460-20041109-C00097.png) | 1974-02-15 |
