JPH0252613B2 - - Google Patents

Info

Publication number
JPH0252613B2
JPH0252613B2 JP59104318A JP10431884A JPH0252613B2 JP H0252613 B2 JPH0252613 B2 JP H0252613B2 JP 59104318 A JP59104318 A JP 59104318A JP 10431884 A JP10431884 A JP 10431884A JP H0252613 B2 JPH0252613 B2 JP H0252613B2
Authority
JP
Japan
Prior art keywords
gate
cut
pin
mold
sprue
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
JP59104318A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60247532A (ja
Inventor
Hisashi Kojima
Tatsuo Myagi
Satoshi Sakahara
Isao Kobayashi
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
Original Assignee
TEKUNOPURASU KK
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 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)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Optical Record Carriers (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 JPS60247532A (ja) 1985-12-07
JPH0252613B2 true JPH0252613B2 (en]) 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 (en])

Families Citing this family (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

Family Cites Families (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
US4372741A (en) * 1980-10-31 1983-02-08 Discovision Associates Hot sprue valve assembly for an injection molding machine
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

Also Published As

Publication number Publication date
JPS60247532A (ja) 1985-12-07

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