JPS60247532A - 円盤状記録媒体の成形方法 - Google Patents

円盤状記録媒体の成形方法

Info

Publication number
JPS60247532A
JPS60247532A JP10431884A JP10431884A JPS60247532A JP S60247532 A JPS60247532 A JP S60247532A JP 10431884 A JP10431884 A JP 10431884A JP 10431884 A JP10431884 A JP 10431884A JP S60247532 A JPS60247532 A JP S60247532A
Authority
JP
Japan
Prior art keywords
gate
molding
state
cutting
disc
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.)
Granted
Application number
JP10431884A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0252613B2 (enrdf_load_stackoverflow
Inventor
Hisashi Kojima
久司 小嶋
Tatsuo Miyagi
達夫 宮城
Satoshi Sakahara
坂原　聡
Isao Kobayashi
功 小林
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.)
TEKUNOPURASU KK
Technoplas Inc
Original Assignee
TEKUNOPURASU KK
Technoplas 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 TEKUNOPURASU KK, Technoplas Inc filed Critical TEKUNOPURASU KK
Priority to JP10431884A priority Critical patent/JPS60247532A/ja
Publication of JPS60247532A publication Critical patent/JPS60247532A/ja
Publication of JPH0252613B2 publication Critical patent/JPH0252613B2/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
    • B29C45/38—Cutting-off equipment for sprues or ingates

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
JP10431884A 1984-05-23 1984-05-23 円盤状記録媒体の成形方法 Granted JPS60247532A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10431884A JPS60247532A (ja) 1984-05-23 1984-05-23 円盤状記録媒体の成形方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10431884A JPS60247532A (ja) 1984-05-23 1984-05-23 円盤状記録媒体の成形方法

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP376792A Division JPH0635140B2 (ja) 1992-01-13 1992-01-13 円盤状記録媒体の成形方法

Publications (2)

Publication Number Publication Date
JPS60247532A true JPS60247532A (ja) 1985-12-07
JPH0252613B2 JPH0252613B2 (enrdf_load_stackoverflow) 1990-11-14

Family

ID=14377583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10431884A Granted JPS60247532A (ja) 1984-05-23 1984-05-23 円盤状記録媒体の成形方法

Country Status (1)

Country Link
JP (1) JPS60247532A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01280519A (ja) * 1988-05-02 1989-11-10 Meiki Co Ltd ディスク成形用金型

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156062A (en) * 1978-05-31 1979-12-08 Nissei Plastics Ind Co Injection punching molding method
JPS57105328A (en) * 1980-10-31 1982-06-30 Discovision Ass Aggregate of valve
JPS58188636A (ja) * 1982-04-30 1983-11-04 Sumitomo Heavy Ind Ltd 打抜き機構を有する射出成形機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54156062A (en) * 1978-05-31 1979-12-08 Nissei Plastics Ind Co Injection punching molding method
JPS57105328A (en) * 1980-10-31 1982-06-30 Discovision Ass Aggregate of valve
JPS58188636A (ja) * 1982-04-30 1983-11-04 Sumitomo Heavy Ind Ltd 打抜き機構を有する射出成形機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01280519A (ja) * 1988-05-02 1989-11-10 Meiki Co Ltd ディスク成形用金型

Also Published As

Publication number Publication date
JPH0252613B2 (enrdf_load_stackoverflow) 1990-11-14

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