JPS6328004B2 - - Google Patents

Info

Publication number
JPS6328004B2
JPS6328004B2 JP57061429A JP6142982A JPS6328004B2 JP S6328004 B2 JPS6328004 B2 JP S6328004B2 JP 57061429 A JP57061429 A JP 57061429A JP 6142982 A JP6142982 A JP 6142982A JP S6328004 B2 JPS6328004 B2 JP S6328004B2
Authority
JP
Japan
Prior art keywords
center
disk
molding
mold
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.)
Expired
Application number
JP57061429A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58177325A (ja
Inventor
Shoji Oomya
Masaaki Haruhara
Sadaharu Nakagawa
Tokya Nakamura
Kyoshige Inagaki
Junnosuke Yamawaki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6142982A priority Critical patent/JPS58177325A/ja
Publication of JPS58177325A publication Critical patent/JPS58177325A/ja
Publication of JPS6328004B2 publication Critical patent/JPS6328004B2/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
    • B29C2045/2653—Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs using two stampers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP6142982A 1982-04-12 1982-04-12 円盤状記録媒体の成形装置 Granted JPS58177325A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6142982A JPS58177325A (ja) 1982-04-12 1982-04-12 円盤状記録媒体の成形装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6142982A JPS58177325A (ja) 1982-04-12 1982-04-12 円盤状記録媒体の成形装置

Publications (2)

Publication Number Publication Date
JPS58177325A JPS58177325A (ja) 1983-10-18
JPS6328004B2 true JPS6328004B2 (de) 1988-06-07

Family

ID=13170811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6142982A Granted JPS58177325A (ja) 1982-04-12 1982-04-12 円盤状記録媒体の成形装置

Country Status (1)

Country Link
JP (1) JPS58177325A (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4828769A (en) * 1986-05-05 1989-05-09 Galic/Maus Ventures Method for injection molding articles
JP6012804B1 (ja) 2015-03-31 2016-10-25 東洋製罐株式会社 缶体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152028A (en) * 1979-05-15 1980-11-27 Matsushita Electric Ind Co Ltd Reproduction of information recorded carrier
JPS5751429A (en) * 1980-07-30 1982-03-26 Polygram Gmbh Manufacture of discoid information carrier which can be read optically

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152028A (en) * 1979-05-15 1980-11-27 Matsushita Electric Ind Co Ltd Reproduction of information recorded carrier
JPS5751429A (en) * 1980-07-30 1982-03-26 Polygram Gmbh Manufacture of discoid information carrier which can be read optically

Also Published As

Publication number Publication date
JPS58177325A (ja) 1983-10-18

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