JPS609721A - 高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体 - Google Patents

高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体

Info

Publication number
JPS609721A
JPS609721A JP58115900A JP11590083A JPS609721A JP S609721 A JPS609721 A JP S609721A JP 58115900 A JP58115900 A JP 58115900A JP 11590083 A JP11590083 A JP 11590083A JP S609721 A JPS609721 A JP S609721A
Authority
JP
Japan
Prior art keywords
mold
annular
molding cavity
gate
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
JP58115900A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0257765B2 (enrdf_load_stackoverflow
Inventor
Shinji Tokuhara
徳原　慎二
Yoshio Kizawa
鬼沢　嘉夫
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.)
Daicel Corp
Original Assignee
Daicel Chemical Industries 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 Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd
Priority to JP58115900A priority Critical patent/JPS609721A/ja
Publication of JPS609721A publication Critical patent/JPS609721A/ja
Publication of JPH0257765B2 publication Critical patent/JPH0257765B2/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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • B29C2045/2714—Gates elongated, e.g. film-like, annular
    • 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
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
JP58115900A 1983-06-29 1983-06-29 高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体 Granted JPS609721A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58115900A JPS609721A (ja) 1983-06-29 1983-06-29 高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58115900A JPS609721A (ja) 1983-06-29 1983-06-29 高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体

Publications (2)

Publication Number Publication Date
JPS609721A true JPS609721A (ja) 1985-01-18
JPH0257765B2 JPH0257765B2 (enrdf_load_stackoverflow) 1990-12-05

Family

ID=14673980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58115900A Granted JPS609721A (ja) 1983-06-29 1983-06-29 高密度情報記録担体用プラスチツクデイスクの射出成形用金型組立体

Country Status (1)

Country Link
JP (1) JPS609721A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6323476A (ja) * 1986-06-20 1988-01-30 Seiko Instr & Electronics Ltd 階調表現用プリンタのヘツドの駆動方法
JPH01264820A (ja) * 1988-04-16 1989-10-23 Daicel Chem Ind Ltd フォーマット入り光ディスク基板成形用金型
US4880587A (en) * 1985-07-25 1989-11-14 Krauss-Maffei A.G. Process for production of an injected molded part
EP1283100A4 (en) * 2000-04-13 2006-09-13 Takashei Co Ltd METHOD AND DEVICE FOR INJECTION MOLDING

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4880587A (en) * 1985-07-25 1989-11-14 Krauss-Maffei A.G. Process for production of an injected molded part
JPS6323476A (ja) * 1986-06-20 1988-01-30 Seiko Instr & Electronics Ltd 階調表現用プリンタのヘツドの駆動方法
JPH01264820A (ja) * 1988-04-16 1989-10-23 Daicel Chem Ind Ltd フォーマット入り光ディスク基板成形用金型
EP1283100A4 (en) * 2000-04-13 2006-09-13 Takashei Co Ltd METHOD AND DEVICE FOR INJECTION MOLDING

Also Published As

Publication number Publication date
JPH0257765B2 (enrdf_load_stackoverflow) 1990-12-05

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