JPS6245809B2 - - Google Patents

Info

Publication number
JPS6245809B2
JPS6245809B2 JP58107372A JP10737283A JPS6245809B2 JP S6245809 B2 JPS6245809 B2 JP S6245809B2 JP 58107372 A JP58107372 A JP 58107372A JP 10737283 A JP10737283 A JP 10737283A JP S6245809 B2 JPS6245809 B2 JP S6245809B2
Authority
JP
Japan
Prior art keywords
mold
fixed
movable
center
opening
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
Application number
JP58107372A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59230731A (ja
Inventor
Hideo Horiguchi
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.)
Meiki Seisakusho KK
Original Assignee
Meiki Seisakusho 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 Meiki Seisakusho KK filed Critical Meiki Seisakusho KK
Priority to JP10737283A priority Critical patent/JPS59230731A/ja
Publication of JPS59230731A publication Critical patent/JPS59230731A/ja
Publication of JPS6245809B2 publication Critical patent/JPS6245809B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP10737283A 1983-06-14 1983-06-14 中心部を開口した薄肉円盤の射出成形装置 Granted JPS59230731A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10737283A JPS59230731A (ja) 1983-06-14 1983-06-14 中心部を開口した薄肉円盤の射出成形装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10737283A JPS59230731A (ja) 1983-06-14 1983-06-14 中心部を開口した薄肉円盤の射出成形装置

Publications (2)

Publication Number Publication Date
JPS59230731A JPS59230731A (ja) 1984-12-25
JPS6245809B2 true JPS6245809B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-09-29

Family

ID=14457426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10737283A Granted JPS59230731A (ja) 1983-06-14 1983-06-14 中心部を開口した薄肉円盤の射出成形装置

Country Status (1)

Country Link
JP (1) JPS59230731A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0247244B1 (en) * 1986-02-26 1992-01-15 Kabushiki Kaisha Meiki Seisakusho Improved molding apparatus and method for producing centrally-apertured discs
JPS63130320A (ja) * 1986-11-20 1988-06-02 Meiki Co Ltd デイスク成形金型
US5238393A (en) * 1990-12-28 1993-08-24 Sony Corporation Multi-cavity injection molding apparatus for optical disk substrates

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613395A (en) * 1949-02-24 1952-10-14 M & W Company Inc Apparatus and method for producing disk phonograph records
JPS511312U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-06-17 1976-01-07
US3989436A (en) * 1975-12-18 1976-11-02 Rca Corporation Apparatus for producing injection molded and centrally apertured disc records
JPS54156062A (en) * 1978-05-31 1979-12-08 Nissei Plastics Ind Co Injection punching molding method
CA1143517A (en) * 1979-04-18 1983-03-29 John R. Holmes Apparatus for producing centrally apertured record discs
JPH0767462B2 (ja) * 1985-08-16 1995-07-26 株式会社日立製作所 超音波照射装置

Also Published As

Publication number Publication date
JPS59230731A (ja) 1984-12-25

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