JPH0564570B2 - - Google Patents

Info

Publication number
JPH0564570B2
JPH0564570B2 JP61093263A JP9326386A JPH0564570B2 JP H0564570 B2 JPH0564570 B2 JP H0564570B2 JP 61093263 A JP61093263 A JP 61093263A JP 9326386 A JP9326386 A JP 9326386A JP H0564570 B2 JPH0564570 B2 JP H0564570B2
Authority
JP
Japan
Prior art keywords
mold
substrate
molding
strip
birefringence
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
JP61093263A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62249718A (ja
Inventor
Akihiro Inotsuka
Yoshio Kizawa
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 JP61093263A priority Critical patent/JPS62249718A/ja
Publication of JPS62249718A publication Critical patent/JPS62249718A/ja
Publication of JPH0564570B2 publication Critical patent/JPH0564570B2/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
    • B29C45/37—Mould cavity walls, i.e. the inner surface forming the mould cavity, e.g. linings

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)
  • Manufacturing Optical Record Carriers (AREA)
JP61093263A 1986-04-24 1986-04-24 光記録媒体基板の成形法 Granted JPS62249718A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61093263A JPS62249718A (ja) 1986-04-24 1986-04-24 光記録媒体基板の成形法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61093263A JPS62249718A (ja) 1986-04-24 1986-04-24 光記録媒体基板の成形法

Publications (2)

Publication Number Publication Date
JPS62249718A JPS62249718A (ja) 1987-10-30
JPH0564570B2 true JPH0564570B2 (Direct) 1993-09-14

Family

ID=14077595

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61093263A Granted JPS62249718A (ja) 1986-04-24 1986-04-24 光記録媒体基板の成形法

Country Status (1)

Country Link
JP (1) JPS62249718A (Direct)

Also Published As

Publication number Publication date
JPS62249718A (ja) 1987-10-30

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