JPS6327761B2 - - Google Patents
Info
- Publication number
- JPS6327761B2 JPS6327761B2 JP14002481A JP14002481A JPS6327761B2 JP S6327761 B2 JPS6327761 B2 JP S6327761B2 JP 14002481 A JP14002481 A JP 14002481A JP 14002481 A JP14002481 A JP 14002481A JP S6327761 B2 JPS6327761 B2 JP S6327761B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- photocurable resin
- resin
- signal recording
- curing
- 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
Links
- 239000011347 resin Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 31
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000016 photochemical curing Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 238000001723 curing Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- MSAHTMIQULFMRG-UHFFFAOYSA-N 1,2-diphenyl-2-propan-2-yloxyethanone Chemical compound C=1C=CC=CC=1C(OC(C)C)C(=O)C1=CC=CC=C1 MSAHTMIQULFMRG-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003892 spreading Methods 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0888—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds
- B29C35/0894—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using transparant moulds provided with masks or diaphragms
-
- 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
- B29C43/52—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D17/00—Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
- B29D17/005—Producing optically read record carriers, e.g. optical discs
-
- 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
Description
本発明はビデオデイスクやオーデイオデイスク
のような映像、音響もしくは他の情報信号が面の
凹凸の形で記録されている信号記録担体の製造法
に関するものである。
通常、信号記録担体の製造法にはコンプレツシ
ヨンプレス法、インジエクシヨンプレス法、光硬
化型樹脂法等がある。光硬化型樹脂法とは金型上
に光硬化型樹脂を載せ、その上に透明基板を載
せ、プレス機で加圧し、光硬化型樹脂を金型と透
明基板との間で一様に押し広げてから光を照射
し、光硬化型樹脂全体を硬化させ、その後金型を
取り去り信号記録担体を製造する方法である。
この製造法には次のような欠点がある。先ず第
１に、光硬化型樹脂の硬化時の収縮により信号記
録担体が反り易く、更に気泡も残り易い。第２
に、光硬化型樹脂の充填状態により加圧、硬化後
の光硬化型樹脂の膜厚が不均一になることがあ
る。第３に、これらにより不良が発生し易く、コ
ストも高くなる。
本発明は上記の欠点を解決するために為された
もので、安定で低コストな光硬化型樹脂法による
信号記録担体の製造法を提供するものである。以
下本発明を実施例を示す図面に基づいて説明す
る。第１図及び第２図に夫々本発明の異なつた実
施例を示し、両図において本発明は面上に凹凸状
の信号を記録したプレス用金型６の上に光硬化型
樹脂５を載せ、更に該光硬化型樹脂５の上に加圧
用平板９を配置し、前記金型６と加圧用平板９と
の間に圧力を加え、光硬化型樹脂５を一様に押し
広げてから光を照射し、中心部から一様に外周部
へと徐々に硬化させ、しかる後金型６を取り去る
ことにより信号記録担体を製造するものである。
即ち金型固定台７の上に金型６を固定し、その
上に光硬化型樹脂５を、更に透明基板４を載せ、
その上に加圧用平板９を重ね、プレス機８により
圧力を加え、光硬化型樹脂５を一様に押し広げ、
光源固定台２に取り付けられた光源１を点灯して
シヤツター３を中心から徐々に開いて光硬化型樹
脂５を中心部から徐々に外周へと硬化させる。そ
の後光硬化型樹脂５から金型６を取り去り、信号
記録担体を製造する。
尚上記方法において透明基板４を使用せず、光
硬化型樹脂５により信号記録と同時に基板を作成
するようにしても良い。
次に第１の具体例を第１図に従つて説明する。
加圧用平板９として厚み1.5cm、直径34cmのアル
ミニウムの平板を用い、光硬化型樹脂５として
２，２−ビス（４−アクリロイルオキシジエチレ
ンオキシフエニル）プロパン（商品名：NKエス
テルＡ−BPE−４）100重量部とベンゾインイソ
プロピルエーテル３重量部とからなる紫外線硬化
型樹脂10mlを用い、光源１として1KWの水銀灯
１本を、透明基板４として厚み１mm、直径20cmの
アクリル板を、金型６として直径32cmのニツケル
製金型を夫々用い、金型固定台７との間でプレス
機８により加圧用平板９を上方より押し付け、４
Kg／cm2まで加圧し、１〜２分後圧力を解除して水
銀灯を点灯させ、シヤツター３〔カメラの絞り構
造と同じ〕を中心から徐々に開き、１分30秒後に
全開するようにして紫外線硬化型樹脂を硬化し
た。硬化後、ニツケル製金型を取り去り信号記録
担体を作製した。
第２の具体例を第２図を用いて説明すると、加
圧用平板９として厚み1.5cm、直径34cmのアクリ
ル板を用い、透明基板４として厚み１mm、直径20
cmの透明塩化ビニール板を用い光硬化型樹脂５と
して２，２−ビス（４−アクリロイルオキシジエ
チレンオキシフエニル）プロパン100重量部とベ
ンゾインイソプロピルエーテル３重量部とからな
る紫外線硬化型樹脂10mlを用い、金型６として直
径32cmの銅製金型を用い、光源１として1KWの
水銀灯１本を用い、プレス機８で金型固定台７を
押し上げ４Kg／cm2まで加圧し、その状態で水銀灯
を点灯させ、シヤツターを中心から徐々に開き、
２分30秒後に全開するようにして紫外線硬化型樹
脂を硬化した。硬化後、銅製金型を取り去り信号
記録担体を作製した。
従来法と上記各方法とによる信号記録担体の反
りの比較を次表に示す。
The present invention relates to a method for manufacturing signal recording carriers, such as video discs or audio discs, on which video, audio or other information signals are recorded in the form of surface irregularities. Generally, methods for manufacturing signal recording carriers include compression press method, injection press method, and photocurable resin method. The photocurable resin method is to place a photocurable resin on a mold, place a transparent substrate on top of it, apply pressure with a press, and press the photocurable resin uniformly between the mold and the transparent substrate. This is a method of spreading the resin, irradiating it with light, curing the entire photocurable resin, and then removing the mold to produce a signal recording carrier. This manufacturing method has the following drawbacks. First of all, the signal recording carrier tends to warp due to contraction of the photocurable resin during curing, and furthermore, air bubbles tend to remain. Second
Furthermore, depending on the filling state of the photocurable resin, the film thickness of the photocurable resin after being pressurized and cured may become non-uniform. Thirdly, these factors tend to cause defects and increase costs. The present invention has been made to solve the above-mentioned drawbacks, and provides a stable and low-cost method for manufacturing a signal recording carrier using a photocurable resin method. The present invention will be described below based on drawings showing embodiments. Different embodiments of the present invention are shown in FIGS. 1 and 2, and in both figures, a photocurable resin 5 is placed on a press die 6 on which uneven signals are recorded on the surface. Furthermore, a pressurizing flat plate 9 is placed on top of the photocurable resin 5, pressure is applied between the mold 6 and the pressurizing flat plate 9, the photocurable resin 5 is uniformly spread, and then light is applied. The signal recording carrier is manufactured by irradiating the material and gradually curing it uniformly from the center to the outer periphery, and then removing the mold 6. That is, the mold 6 is fixed on the mold fixing table 7, and the photocuring resin 5 and the transparent substrate 4 are placed thereon.
A pressurizing flat plate 9 is placed on top of it, pressure is applied by a press machine 8, and the photocurable resin 5 is uniformly spread.
The light source 1 attached to the light source fixing table 2 is turned on, the shutter 3 is gradually opened from the center, and the photocuring resin 5 is cured gradually from the center to the outer periphery. Thereafter, the mold 6 is removed from the photocurable resin 5 to produce a signal recording carrier. Incidentally, in the above method, the transparent substrate 4 may not be used, and the substrate may be created using the photocurable resin 5 at the same time as signal recording. Next, a first specific example will be explained with reference to FIG.
An aluminum flat plate with a thickness of 1.5 cm and a diameter of 34 cm was used as the pressurizing flat plate 9, and 2,2-bis(4-acryloyloxydiethyleneoxyphenyl)propane (trade name: NK ester A-BPE-) was used as the photocurable resin 5. 4) Using 10 ml of ultraviolet curable resin consisting of 100 parts by weight and 3 parts by weight of benzoin isopropyl ether, one 1KW mercury lamp as light source 1, an acrylic plate with a thickness of 1 mm and a diameter of 20 cm as transparent substrate 4, and mold 6. Using a nickel mold with a diameter of 32 cm, a pressing flat plate 9 was pressed from above between the mold fixing table 7 and the press machine 8.
Pressurize to Kg/ cm2 , release the pressure after 1 to 2 minutes, turn on the mercury lamp, gradually open shutter 3 (same aperture structure as a camera) from the center, and fully open after 1 minute and 30 seconds. The ultraviolet curable resin was cured. After curing, the nickel mold was removed to prepare a signal recording carrier. To explain the second specific example using FIG. 2, an acrylic plate with a thickness of 1.5 cm and a diameter of 34 cm is used as the pressurizing flat plate 9, and an acrylic plate with a thickness of 1 mm and a diameter of 20 cm is used as the transparent substrate 4.
cm transparent vinyl chloride plate, and 10 ml of ultraviolet curable resin consisting of 100 parts by weight of 2,2-bis(4-acryloyloxydiethyleneoxyphenyl)propane and 3 parts by weight of benzoin isopropyl ether as photocurable resin 5. A copper mold with a diameter of 32 cm is used as the mold 6, a 1 KW mercury lamp is used as the light source 1, the mold fixing base 7 is pushed up with the press machine 8, and pressurized to 4 kg/cm 2 , and the mercury lamp is turned on in this state. then gradually open the shutter from the center,
The ultraviolet curable resin was cured by fully opening the door after 2 minutes and 30 seconds. After curing, the copper mold was removed to prepare a signal recording carrier. The following table shows a comparison of the warpage of the signal recording carrier between the conventional method and each of the above methods.
【表】
本発明信号記録担体の製造法は以上述べたよう
に実施し得るもので、次に述べるような効果が得
られる。
光硬化型樹脂を中心部から外周部へと徐々に
硬化するために、硬化等による内部応力が余り
残らず硬化後の反りが非常に少ない。
硬化収縮により減少した部分が周囲の未硬化
部分により補われるため収縮による空洞ができ
難い。
光硬化型樹脂の充填状態により部分的に不均
一な加圧状態が起つても、硬化収縮、収縮部分
を補うための未硬化部分の移動等が順次起るた
め、光硬化型樹脂の膜厚がより均一になり易
い。
これらにより不良品の発生が起り難くなり、
コストを下げることができる。[Table] The method for manufacturing the signal recording carrier of the present invention can be carried out as described above, and the following effects can be obtained. Since the photocurable resin is gradually cured from the center to the outer periphery, little internal stress remains due to curing, etc., and there is very little warping after curing. Since the area reduced due to curing shrinkage is compensated for by the surrounding uncured area, cavities are less likely to be formed due to shrinkage. Even if a partially uneven pressurized state occurs due to the filling state of the photocurable resin, curing shrinkage and movement of uncured parts to compensate for the shrinkage occur sequentially, so the film thickness of the photocurable resin becomes more uniform. These make it difficult for defective products to occur,
Costs can be lowered.
第１図及び第２図は夫々本発明の異なつた実施
例を示す概略断面図である。
１……光源、２……光源固定台、３……シヤツ
ター、４……透明基板、５……光硬化型樹脂、６
……金型、７……金型固定台、８……プレス機、
９……加圧用平板。
1 and 2 are schematic sectional views showing different embodiments of the present invention, respectively. 1...Light source, 2...Light source fixing stand, 3...Shutter, 4...Transparent substrate, 5...Photocuring resin, 6
...Mold, 7...Mold fixing stand, 8...Press machine,
9... Flat plate for pressurization.
Claims (1)
の上に光硬化型樹脂を載せ、更に該光硬化型樹脂
の上に加圧用平板を配置し、前記金型と加圧用平
板との間に圧力を加え、光硬化型樹脂を一様に押
し広げてから光を照射し、中心部から一様に外周
部へと徐々に硬化させ、しかるのち金型を取り去
ることを特徴とする信号記録担体の製造法。1. A photo-curing resin is placed on a press mold with an uneven signal recorded on its surface, and a pressurizing flat plate is placed on top of the photo-curing resin, and the pressure plate is connected to the press mold. A signal characterized in that the photocurable resin is uniformly spread by applying pressure between the parts, and then light is irradiated to uniformly harden it gradually from the center to the outer periphery, and then the mold is removed. Method of manufacturing a record carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14002481A JPS5842436A (en) | 1981-09-04 | 1981-09-04 | Manufacture of signal record carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14002481A JPS5842436A (en) | 1981-09-04 | 1981-09-04 | Manufacture of signal record carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5842436A JPS5842436A (en) | 1983-03-11 |
| JPS6327761B2 true JPS6327761B2 (en) | 1988-06-06 |
Family
ID=15259166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14002481A Granted JPS5842436A (en) | 1981-09-04 | 1981-09-04 | Manufacture of signal record carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842436A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59171628A (en) * | 1983-03-18 | 1984-09-28 | Hitachi Ltd | Method and apparatus for making rerecorded disc |
| EP0226123A3 (en) * | 1985-12-03 | 1988-08-10 | Matsushita Electric Industrial Co., Ltd. | Method for producing transparent plastic article |
| US5529728A (en) * | 1986-01-28 | 1996-06-25 | Q2100, Inc. | Process for lens curing and coating |
| JPH01163027A (en) * | 1987-12-21 | 1989-06-27 | Matsushita Electric Ind Co Ltd | Method and device for molding optical element |
| US5932058A (en) * | 1996-02-29 | 1999-08-03 | Wea Manufacturing, Inc. | Process for manufacturing a compact disc using a curing regulating filter |
-
1981
- 1981-09-04 JP JP14002481A patent/JPS5842436A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5842436A (en) | 1983-03-11 |
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