JPH0449446B2 - - Google Patents

Info

Publication number
JPH0449446B2
JPH0449446B2 JP60149285A JP14928585A JPH0449446B2 JP H0449446 B2 JPH0449446 B2 JP H0449446B2 JP 60149285 A JP60149285 A JP 60149285A JP 14928585 A JP14928585 A JP 14928585A JP H0449446 B2 JPH0449446 B2 JP H0449446B2
Authority
JP
Japan
Prior art keywords
compression
resin
mold
cavity
optical disk
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
JP60149285A
Other languages
English (en)
Japanese (ja)
Other versions
JPS629926A (ja
Inventor
Masaki Yoshii
Naotake Ebinuma
Aizo Kaneda
Yoshitaka Matsura
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.)
Hitachi Ltd
Toyo Innovex Co Ltd
Original Assignee
Toyo Machinery and Metal Co Ltd
Hitachi 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
Application filed by Toyo Machinery and Metal Co Ltd, Hitachi Ltd filed Critical Toyo Machinery and Metal Co Ltd
Priority to JP60149285A priority Critical patent/JPS629926A/ja
Publication of JPS629926A publication Critical patent/JPS629926A/ja
Publication of JPH0449446B2 publication Critical patent/JPH0449446B2/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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
    • B29C45/561—Injection-compression moulding
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/263—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs
    • B29C2045/2657—Drive means for the outer peripheral ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP60149285A 1985-07-09 1985-07-09 光デイスク基板成形方法 Granted JPS629926A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60149285A JPS629926A (ja) 1985-07-09 1985-07-09 光デイスク基板成形方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60149285A JPS629926A (ja) 1985-07-09 1985-07-09 光デイスク基板成形方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2089195A Division JPH07119034B2 (ja) 1990-04-05 1990-04-05 射出圧縮成形装置

Publications (2)

Publication Number Publication Date
JPS629926A JPS629926A (ja) 1987-01-17
JPH0449446B2 true JPH0449446B2 (https=) 1992-08-11

Family

ID=15471852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60149285A Granted JPS629926A (ja) 1985-07-09 1985-07-09 光デイスク基板成形方法

Country Status (1)

Country Link
JP (1) JPS629926A (https=)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH078514B2 (ja) * 1988-04-18 1995-02-01 ダイセル化学工業株式会社 光ディスク用プラスチック基板の射出成形法
JP2906349B2 (ja) * 1989-11-01 1999-06-21 住友重機械工業株式会社 光ディスク基板の製造方法
JPH05205323A (ja) * 1992-01-27 1993-08-13 Matsushita Electric Ind Co Ltd 光ディスク基板の製造方法
JP2706608B2 (ja) * 1993-03-31 1998-01-28 株式会社日本製鋼所 射出圧縮成形方法及びトグル式型締装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5597929A (en) * 1979-01-19 1980-07-25 Matsushita Electric Ind Co Ltd Production of flat plate-shaped body
JPS57123031A (en) * 1981-01-22 1982-07-31 Toshiba Mach Co Ltd Metal mold for injection-compression molding and method using it
JPS57187231A (en) * 1981-05-13 1982-11-17 Matsushita Electric Ind Co Ltd Mold apparatus for compression molding of resin
JPS58101023A (ja) * 1981-12-09 1983-06-16 Matsushita Electric Ind Co Ltd 円盤状記録媒体成形装置
JPS58167140A (ja) * 1982-03-29 1983-10-03 Matsushita Electric Ind Co Ltd 射出圧縮成形装置
JPS59115814A (ja) * 1982-12-24 1984-07-04 Toshiba Corp 高密度記録デイスクの成形方法
JPS59232835A (ja) * 1983-06-15 1984-12-27 Hitachi Ltd 射出圧縮成形金型及びその成形方法
JPS61205112A (ja) * 1985-03-08 1986-09-11 Idemitsu Petrochem Co Ltd 射出圧縮成形方法

Also Published As

Publication number Publication date
JPS629926A (ja) 1987-01-17

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term