JPH11514601A - コンパクトディスクの射出成形 - Google Patents
コンパクトディスクの射出成形Info
- Publication number
- JPH11514601A JPH11514601A JP10512422A JP51242298A JPH11514601A JP H11514601 A JPH11514601 A JP H11514601A JP 10512422 A JP10512422 A JP 10512422A JP 51242298 A JP51242298 A JP 51242298A JP H11514601 A JPH11514601 A JP H11514601A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- polymer
- injection molding
- open
- injection
- 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.)
- Ceased
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/263—Preparing and using a stamper, e.g. pressing or injection molding substrates
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
- B29C2043/5833—Measuring, controlling or regulating movement of moulds or mould parts, e.g. opening or closing, actuating
-
- 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
- B29C2045/5615—Compression stroke, e.g. length thereof
- B29C2045/562—Velocity profiles of the compression stroke
-
- 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
- B29C2045/563—Enlarging the mould cavity during injection
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.0.6mm以下の厚さを有する、重合体から製造されたコンパクトディス クの射出成形法において、 型を開き、 前記型を100μの中間位置まで閉じ、重合体の注入を開始し、重合体の全導 入量を注入する前に、注入圧力がクランプ圧力を越え、型が開き始めるようにし 、0.07秒間型の圧縮を遅らせ、その間に型を300μまで開かせ続け、次に 閉じ始め、 全力で型をクランプする、 ことからなる射出成形法。 2.0.6mm以下の厚さを有する、重合体から製造されたコンパクトディス クの射出成形法において、 型を開き、 前記型を中間位置まで閉じ、重合体の注入を開始し、重合体の全導入量を注入 する前に、注入圧力がクランプ圧力を越え、型が開き始めるようにし、 0.07秒間型の圧縮を遅らせ、その間に型を開かせ続け、次に閉じ始め、 全力で型をクランプする、 ことからなる射出成形法。 3.0.6mm以下の厚さを有する、重合体の射出成形により形成されたコン パクトディスクで、複屈折が150より小さく、ティルトが0.6°より小さく 、型を開き、 前記型を100μの中間位置まで閉じ、重合体の注入を開始し、重合体の全導 入量を注入する前に、注入圧力がクランプ圧力を越え、型が開き始めるようにし 、0.07秒間型の圧縮を遅らせ、その間に型を300μまで開かせ続け、次に 閉じ始め、 全力で型をクランプする、 ことからなる方法により形成したコンパクトディスク。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US70761896A | 1996-09-05 | 1996-09-05 | |
US08/707,618 | 1996-09-05 | ||
PCT/IB1997/001214 WO1998010417A1 (en) | 1996-09-05 | 1997-09-05 | Injection molding of compact discs |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH11514601A true JPH11514601A (ja) | 1999-12-14 |
Family
ID=24842422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10512422A Ceased JPH11514601A (ja) | 1996-09-05 | 1997-09-05 | コンパクトディスクの射出成形 |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0858656B1 (ja) |
JP (1) | JPH11514601A (ja) |
AT (1) | ATE268495T1 (ja) |
AU (1) | AU720148B2 (ja) |
DE (1) | DE69729369T2 (ja) |
WO (1) | WO1998010417A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10048861A1 (de) * | 2000-10-02 | 2002-04-25 | Krauss Maffei Kunststofftech | Verfahren und Vorrichtung zum Herstellen von dickwandigen Formteilen |
ATE275469T1 (de) * | 2001-01-26 | 2004-09-15 | Coraltech Ltd | Formwerkzeug und verfahren zum spritzprägen |
DE10141858B4 (de) | 2001-08-27 | 2010-06-17 | Kraussmaffei Technologies Gmbh | Verfahren und Vorrichtung zum Herstellen flächenartiger Kunststoff-Formteile, insbesondere Kunststoffscheiben |
JP4377377B2 (ja) * | 2003-05-22 | 2009-12-02 | 住友重機械工業株式会社 | 成形方法、成形品及び成形機 |
DE102004051250A1 (de) * | 2004-10-20 | 2006-04-27 | Demag Ergotech Gmbh | Verfahren zum Herstellen von langfaserverstärkten Kunststoffformteilen |
DE102005013975A1 (de) * | 2005-03-26 | 2006-09-28 | Krauss-Maffei Kunststofftechnik Gmbh | Vorrichtung und Verfahren zur Herstellung von optischen Datenträgern sowie optische Datenträger |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6195919A (ja) * | 1984-10-18 | 1986-05-14 | Sony Corp | 射出成形機 |
JPH0675888B2 (ja) * | 1986-11-28 | 1994-09-28 | ソニー株式会社 | デイスクの射出成形方法 |
US4849151A (en) * | 1986-12-19 | 1989-07-18 | Matsushita Electric Industrial Co., Ltd. | Method of molding plastic and injection compression molding apparatus using elongatable tie bars |
JP2642158B2 (ja) * | 1988-08-16 | 1997-08-20 | 住友重機械工業株式会社 | 光ディスク基板成形用金型 |
JPH0733034B2 (ja) * | 1988-09-05 | 1995-04-12 | 富士写真フイルム株式会社 | 射出圧縮成形用金型 |
US5015426A (en) * | 1989-05-18 | 1991-05-14 | Galic Maus Ventures | Precision single cavity and multicavity plastic injection molding via an adaptive mold process |
US5068065A (en) * | 1990-07-31 | 1991-11-26 | Galic Maus Ventures | Faster cycling sprue method and apparatus for injection molding plastic optical disks |
JPH05205323A (ja) * | 1992-01-27 | 1993-08-13 | Matsushita Electric Ind Co Ltd | 光ディスク基板の製造方法 |
JP2785560B2 (ja) * | 1992-01-28 | 1998-08-13 | 松下電器産業株式会社 | 光ディスク基板の製造方法 |
JP2597529B2 (ja) * | 1993-08-20 | 1997-04-09 | 日精樹脂工業株式会社 | 射出成形方法 |
JP3343628B2 (ja) * | 1993-08-27 | 2002-11-11 | 日本ジーイープラスチックス株式会社 | 薄肉成形方法 |
JP3431348B2 (ja) * | 1994-06-20 | 2003-07-28 | 松下電器産業株式会社 | 光ディスク用基板の製造方法 |
-
1997
- 1997-09-05 AU AU43156/97A patent/AU720148B2/en not_active Ceased
- 1997-09-05 JP JP10512422A patent/JPH11514601A/ja not_active Ceased
- 1997-09-05 DE DE69729369T patent/DE69729369T2/de not_active Expired - Fee Related
- 1997-09-05 EP EP97941154A patent/EP0858656B1/en not_active Expired - Lifetime
- 1997-09-05 AT AT97941154T patent/ATE268495T1/de not_active IP Right Cessation
- 1997-09-05 WO PCT/IB1997/001214 patent/WO1998010417A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU4315697A (en) | 1998-03-26 |
AU720148B2 (en) | 2000-05-25 |
EP0858656A4 (en) | 1998-10-14 |
ATE268495T1 (de) | 2004-06-15 |
DE69729369D1 (de) | 2004-07-08 |
EP0858656A1 (en) | 1998-08-19 |
DE69729369T2 (de) | 2005-06-02 |
EP0858656B1 (en) | 2004-06-02 |
WO1998010417A1 (en) | 1998-03-12 |
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