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
Links
- 239000000758 substrate Substances 0.000 claims description 46
- 238000000465 moulding Methods 0.000 claims description 29
- 229920005989 resin Polymers 0.000 claims description 23
- 239000011347 resin Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 18
- 229920003023 plastic Polymers 0.000 claims description 17
- 229920005668 polycarbonate resin Polymers 0.000 claims description 6
- 239000004431 polycarbonate resin Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 18
- 238000005520 cutting process Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 6
- 239000004417 polycarbonate Substances 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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)
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 (enrdf_load_stackoverflow) | 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 (enrdf_load_stackoverflow) |
-
1986
- 1986-04-24 JP JP61093263A patent/JPS62249718A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62249718A (ja) | 1987-10-30 |
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