JP2003266436A - Method and apparatus for disposal of optical recording medium - Google Patents
Method and apparatus for disposal of optical recording mediumInfo
- Publication number
- JP2003266436A JP2003266436A JP2002075030A JP2002075030A JP2003266436A JP 2003266436 A JP2003266436 A JP 2003266436A JP 2002075030 A JP2002075030 A JP 2002075030A JP 2002075030 A JP2002075030 A JP 2002075030A JP 2003266436 A JP2003266436 A JP 2003266436A
- Authority
- JP
- Japan
- Prior art keywords
- optical recording
- recording medium
- layer
- polycarbonate resin
- metal layer
- 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
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Manufacturing Optical Record Carriers (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ポリカーボネート
樹脂基板上に金属層及び紫外線硬化樹脂層を有する光記
録媒体からポリカーボネート樹脂を回収し、リサイクル
して再利用するのに好適な光記録媒体の処理方法及び装
置、並びに、その方法又は装置により回収されたポリカ
ーボネート樹脂を基板材料として用いた光記録媒体に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment of an optical recording medium suitable for recovering a polycarbonate resin from an optical recording medium having a metal layer and an ultraviolet curable resin layer on a polycarbonate resin substrate, recycling it and reusing it. The present invention relates to a method and an apparatus, and an optical recording medium using a polycarbonate resin recovered by the method or apparatus as a substrate material.
【０００２】[0002]
【従来技術】現在、光記録媒体は、磁気テープや磁気デ
ィスクに代わり、可搬性媒体として主流になっている。
特に、音楽用ＣＤ、ＣＤ−ＲＯＭが普及し汎用媒体とな
っている。近年、これら再生専用の光記録媒体に加え、
記録可能なＣＤ−Ｒ、ＣＤ−ＲＷ媒体が急速に普及して
きている。更に、大容量のＤＶＤ媒体の普及も進んでい
る。その結果、最近、これら大量に消費された媒体が廃
棄されるようになり、埋め立て、焼却によって処分され
るようになった。しかし、このような埋め立て、焼却
は、地球環境に負荷を与えるばかりでなく、資源を無駄
にすることになる。このような状況の中で、廃棄される
光記録媒体を資源として再利用する動きが出始めてい
る。例えば、工場内で破棄されるポリカーボネート基板
や、金属及び紫外線硬化樹脂層を有する光記録媒体は、
専門業者によって回収され、破砕後、ポリカーボネート
チップとして再利用されている。しかし現状では、金属
及び紫外線硬化樹脂を含んだ不純物濃度の高いポリカー
ボネートチップしか得られず、再利用価値が低い。特
に、光学部品としての再利用は不可能であり、構造体へ
の再利用に用途が限られてしまう。2. Description of the Related Art At present, optical recording media are becoming mainstream as portable media instead of magnetic tapes and magnetic disks.
In particular, music CDs and CD-ROMs have become widespread and have become general-purpose media. In recent years, in addition to these read-only optical recording media,
Recordable CD-R and CD-RW media are rapidly spreading. In addition, large-capacity DVD media are also becoming widespread. As a result, these recently consumed media have become abandoned and have been disposed of by landfill and incineration. However, such landfill and incineration not only put a burden on the global environment, but also waste resources. Under such circumstances, there is a movement to reuse the discarded optical recording medium as a resource. For example, a polycarbonate substrate discarded in a factory, an optical recording medium having a metal and an ultraviolet curable resin layer,
It is collected by a specialist, crushed, and then reused as polycarbonate chips. However, at present, only a polycarbonate chip having a high impurity concentration containing a metal and an ultraviolet curable resin can be obtained, and its reusability is low. In particular, it cannot be reused as an optical component, and its use is limited to reuse in a structure.
【０００３】そこで、不純物の少ないポリカーボネート
樹脂として回収するために、金属層及び紫外線硬化樹脂
層をサンドブラスト等により機械的に除去する方法が検
討されている。また、特開２０００−３３１３８４号公
報には、研磨材を含む加工液の高圧流を利用した紫外線
硬化樹脂層の除去方法が開示されている。ところで、光
記録媒体の基板材料であるポリカーボネート樹脂は、光
学的部材としての高度な物性を要求されるため比較的高
品質・高価なものが用いられている。従って、高品質を
維持したポリカーボネート樹脂を回収できれば、再利用
の範囲を広げることが可能となり、省資源に有効であ
る。しかし、前述の光記録媒体から金属層及び紫外線硬
化樹脂層を機械的に除去する従来の方法では、ポリカー
ボネート樹脂に余分なストレスによるダメージが与えら
れるため品質が劣化してしまう。また、酸、アルカリ、
加工液等による湿式プロセスでは、基板に化学的な変質
を与えてしまい品質の劣化が避けられない。更にこれら
従来の金属層及び紫外線硬化樹脂層の機械的な除去や湿
式プロセスによる除去では、回収するポリカーボネート
樹脂の表層のみならず内部にまでダメージを与えてしま
い、高品質なポリカーボネート樹脂を回収できない。Therefore, a method of mechanically removing the metal layer and the UV-curable resin layer by sandblasting or the like is being studied in order to recover the polycarbonate resin with less impurities. Further, Japanese Patent Application Laid-Open No. 2000-331384 discloses a method for removing an ultraviolet curable resin layer using a high pressure flow of a working liquid containing an abrasive. By the way, a polycarbonate resin, which is a substrate material of an optical recording medium, is required to have a high level of physical properties as an optical member. Therefore, if the polycarbonate resin that maintains high quality can be recovered, the range of reuse can be expanded, which is effective for resource saving. However, in the conventional method of mechanically removing the metal layer and the ultraviolet curable resin layer from the above-mentioned optical recording medium, the polycarbonate resin is damaged by extra stress, and the quality is deteriorated. Also, acid, alkali,
In the wet process using a processing liquid or the like, chemical deterioration of the substrate is given and quality deterioration cannot be avoided. Further, mechanical removal of these conventional metal layer and ultraviolet curable resin layer or removal by a wet process damages not only the surface layer of the polycarbonate resin to be recovered but also the inside thereof, and a high quality polycarbonate resin cannot be recovered.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、不純物が少
ない光学的に高品質なポリカーボネート樹脂を回収でき
る光記録媒体の処理方法及び装置、並びにその方法又は
装置により回収されたポリカーボネート樹脂を基板材料
として用いた光記録媒体の提供を目的とする。SUMMARY OF THE INVENTION The present invention is directed to a method and an apparatus for treating an optical recording medium capable of recovering an optically high-quality polycarbonate resin containing few impurities, and a polycarbonate resin recovered by the method or apparatus as a substrate material. The purpose is to provide an optical recording medium used as.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に鋭意検討した結果、光記録媒体を処理して金属層及び
紫外線硬化樹脂層を除去する際に、乾式エッチング手段
を利用すれば高品質なポリカーボネート樹脂が回収でき
ることを見出した。即ち、上記課題は、次の１）〜４）
の発明によって解決される。
１） ポリカーボネート樹脂基板上に金属層及び紫外線
硬化樹脂層を有する光記録媒体から、金属層及び紫外線
硬化樹脂層を除去して、ポリカーボネート樹脂を回収す
るに際し、乾式エッチング手段を利用することを特徴と
する光記録媒体の処理方法。
２） 更に誘電体層を有する光記録媒体から、金属層、
紫外線硬化樹脂層、誘電体層を除去することを特徴とす
る１）記載の光記録媒体の処理方法。
３） 前記乾式エッチング手段が、低温プラズマ、イオ
ンビーム、レーザービーム、光励起の何れかを利用した
ものであることを特徴とする１）又は２）記載の光記録
媒体の処理方法。
４） ポリカーボネート樹脂基板上に金属層及び紫外線
硬化樹脂層を有する光記録媒体を載置する手段、該光記
録媒体を乾式エッチングして金属層及び紫外線硬化樹脂
層を除去し、ポリカーボネート樹脂を回収する手段を備
えたことを特徴とする光記録媒体の処理装置。
５） 金属層、紫外線硬化樹脂層及び誘電体層を有する
光記録媒体を載置する手段、該光記録媒体を乾式エッチ
ングして金属層、紫外線硬化樹脂層及び誘電体層を除去
し、ポリカーボネート樹脂を回収する手段を備えたこと
を特徴とする光記録媒体の処理装置。
６） １）〜５）の何れかに記載の方法又は装置により
回収されたポリカーボネート樹脂を基板材料として用い
た光記録媒体。Means for Solving the Problems As a result of intensive studies to achieve the above object, a high quality can be obtained by using a dry etching means when treating an optical recording medium to remove a metal layer and an ultraviolet curable resin layer. It was found that various polycarbonate resins can be recovered. That is, the above-mentioned problems are the following 1) to 4)
It is solved by the invention of. 1) A dry etching means is used when the polycarbonate resin is recovered by removing the metal layer and the ultraviolet curing resin layer from the optical recording medium having the metal layer and the ultraviolet curing resin layer on the polycarbonate resin substrate. Optical recording medium processing method. 2) From an optical recording medium having a dielectric layer to a metal layer,
The method for treating an optical recording medium according to 1), wherein the ultraviolet curable resin layer and the dielectric layer are removed. 3) The method for treating an optical recording medium according to 1) or 2), wherein the dry etching means uses any one of low temperature plasma, ion beam, laser beam and photoexcitation. 4) Means for placing an optical recording medium having a metal layer and an ultraviolet curing resin layer on a polycarbonate resin substrate, dry etching the optical recording medium to remove the metal layer and the ultraviolet curing resin layer, and recover the polycarbonate resin. An optical recording medium processing apparatus comprising means. 5) Means for placing an optical recording medium having a metal layer, an ultraviolet curable resin layer and a dielectric layer, dry etching the optical recording medium to remove the metal layer, the ultraviolet curable resin layer and the dielectric layer, and a polycarbonate resin. An apparatus for processing an optical recording medium, comprising a means for collecting the optical recording medium. 6) An optical recording medium using a polycarbonate resin recovered by the method or apparatus according to any one of 1) to 5) as a substrate material.
【０００６】以下、上記本発明について詳しく説明す
る。図１〜図３に本発明の処理対象となる光記録媒体の
例を示す。図１は一般的なＣＤ−Ｒ媒体の層構成であ
り、案内溝を有する透明基板１上にシアニン色素、フタ
ロシアニン色素、アゾ色素等からなる有機色素層２、光
反射金属層３、紫外線硬化樹脂層４、印刷層５を有す
る。図２は一般的なＣＤ−ＲＷ媒体の層構成であり、案
内溝を有する透明基板１上に、誘電体層６、相変化記録
層７、誘電体層８、光反射金属層９、紫外線硬化樹脂層
４、印刷層５を有する。図３は一般的な音楽ＣＤ、ＣＤ
−ＲＯＭ媒体の層構成であり、案内溝を有する透明基板
１上に、光反射金属層３、紫外線硬化樹脂層４、印刷層
５を有する。これらの他に、貼り合せ構造を有するＤＶ
Ｄ媒体なども本発明の処理対象となる光記録媒体であ
る。The present invention will be described in detail below. 1 to 3 show an example of an optical recording medium to be processed by the present invention. FIG. 1 shows a layer structure of a general CD-R medium. An organic dye layer 2 made of a cyanine dye, a phthalocyanine dye, an azo dye, etc. on a transparent substrate 1 having guide grooves, a light-reflecting metal layer 3, an ultraviolet curable resin. It has a layer 4 and a printed layer 5. FIG. 2 shows a layer structure of a general CD-RW medium, in which a dielectric layer 6, a phase change recording layer 7, a dielectric layer 8, a light-reflecting metal layer 9, and an ultraviolet curing layer are formed on a transparent substrate 1 having guide grooves. It has a resin layer 4 and a printed layer 5. Figure 3 is a general music CD, CD
A layer structure of a ROM medium, which includes a light reflecting metal layer 3, an ultraviolet curable resin layer 4, and a printing layer 5 on a transparent substrate 1 having guide grooves. In addition to these, DV having a bonded structure
The D medium and the like are also optical recording media to be processed by the present invention.
【０００７】図１〜図３に示したように、これらの光記
録媒体はポリカーボネート樹脂基板と紫外線硬化樹脂と
金属を必須としており、書き換え型媒体であるＣＤ−Ｒ
Ｗでは誘電体も有している。これら光記録媒体の９９重
量％はポリカーボネート樹脂であり、リサイクル対象品
としては有効な資源と言える。しかし、光記録媒体から
除去する物質は、金属、誘電体（無機物質）、樹脂と多
様な物質であり、全て湿式プロセスで対応しようとする
と、物質に合わせて溶液を調整しなければならず、回収
対象のポリカーボネート樹脂への化学的な劣化が避けら
れなかった。具体的には、透明度の低下、剛性の低下、
耐熱性の低下を引き起こしていた。これに対し、本発明
で採用する低温プラズマ、イオンビーム、レーザービー
ム、光励起を利用した乾式エッチング手段では、金属、
誘電体（無機物質）、樹脂を、表層の物理的エッチング
又は化学的反応によるエッチングにより除去するので、
ポリカーボネート樹脂のダメージが最表面のみとなる。
即ち、ポリカーボネート樹脂表層のみの処理であるた
め、本来の高品質なポリカーボネート樹脂を回収するこ
とが可能になった。As shown in FIGS. 1 to 3, these optical recording media essentially require a polycarbonate resin substrate, an ultraviolet curable resin, and a metal, and are rewritable media CD-R.
W also has a dielectric. 99% by weight of these optical recording media is polycarbonate resin, which can be said to be an effective resource as a product to be recycled. However, substances to be removed from the optical recording medium are various substances such as metals, dielectrics (inorganic substances) and resins, and if all are to be dealt with by a wet process, the solution must be adjusted according to the substance, Chemical deterioration of the polycarbonate resin to be recovered was unavoidable. Specifically, decrease in transparency, decrease in rigidity,
This caused a decrease in heat resistance. On the other hand, the low temperature plasma, the ion beam, the laser beam, and the dry etching means utilizing photoexcitation adopted in the present invention,
Since the dielectric (inorganic substance) and the resin are removed by physical etching of the surface layer or etching by a chemical reaction,
The polycarbonate resin is damaged only on the outermost surface.
That is, since only the surface layer of the polycarbonate resin is treated, it is possible to recover the original high quality polycarbonate resin.
【０００８】次に、本発明で利用する乾式エッチング手
段について説明する。図４に低温プラズマを利用した本
発明の光記録媒体処理装置の一例を示す。低温プラズマ
を利用する方法は、低圧下において、１３．５６ＭＨｚ
の高周波等によって励起された中性の電離したガス（気
体）を用い、除去対象物質を物理的エッチング又は化学
反応（化学的エッチング）によって除去する。用いるガ
ス種としては、物理的エッチングの場合にはＡｒ等が安
価で効率がよい。また、化学反応を伴って、金属、誘電
体（無機物質）、樹脂をポリカーボネート樹脂から除去
するためには、除去対象物質に合わせてガス種を選択す
ることが望ましい。例えば、有機物質の除去には、揮発
性の高い炭素のハロゲン化物や酸化物を生成させるた
め、ハロゲンや酸素含有物質のガスが効果的である。金
属や誘電体の除去には、ハロゲン化物が効果的である。
光励起による方法も化学反応を伴うため、同様のガス種
が効果的である。一方、イオンビーム、レーザービーム
等の高エネルギーを利用する方法は高速処理が可能であ
り生産性に優れる。中でもガスレーザーが高速処理に効
果的である。なお、本発明で利用する乾式エッチング手
段は、従来の湿式プロセスと併用することにより従来プ
ロセスの改善を図ることも可能である。Next, the dry etching means used in the present invention will be described. FIG. 4 shows an example of the optical recording medium processing apparatus of the present invention utilizing low temperature plasma. The method using low temperature plasma is 13.56 MHz under low pressure.
The substance to be removed is removed by physical etching or chemical reaction (chemical etching) by using a neutral ionized gas (gas) excited by the high frequency wave of the above. As a gas species to be used, Ar or the like is inexpensive and efficient in the case of physical etching. Further, in order to remove the metal, the dielectric (inorganic substance), and the resin from the polycarbonate resin with the chemical reaction, it is desirable to select the gas species according to the substance to be removed. For example, a gas of a halogen or oxygen-containing substance is effective for removing an organic substance, because a highly volatile carbon halide or oxide is generated. Halides are effective for removing metals and dielectrics.
Since the method by photoexcitation also involves a chemical reaction, similar gas species are effective. On the other hand, a method using high energy such as an ion beam or a laser beam enables high-speed processing and is excellent in productivity. Among them, the gas laser is effective for high speed processing. The dry etching means used in the present invention can be used in combination with a conventional wet process to improve the conventional process.
【０００９】[0009]
【実施例】以下、実施例により本発明を具体的に説明す
るが、本発明はこれらの実施例により限定されるもので
はない。EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.
【００１０】実施例１
ＣＤ−ＲＷ媒体を図４のポリカーボネート樹脂回収装置
の下部電極上に設置し、装置内を０．１Ｐａまで減圧に
した。次いで、回収装置内に、ＡｒとＣＯガスを５：５
の割合で、１０ｓｃｃｍの流量で導入した。次いで、１
３．５６ＭＨｚの高周波を３ｋＷ／２００ｍｍφの電力
で、２０分放電し、紫外線硬化樹脂層を除去した。次い
で、Ａｌ反射層、ＡｇＩｎＳｂＴｅ記録層、ＺｎＳ・Ｓ
ｉＯ２層を、同様にＡｒで物理エッチングして除去し
た。上記の操作の結果、ポリカーボネート樹脂のみが得
られた。このポリカーボネート樹脂の品質を確認するた
めに、透明性、ヤング率、Ｔｇを確認したところ、ＣＤ
−ＲＷ媒体のポリカーボネート樹脂基板と同等の値であ
った。次いで、この回収ポリカーボネート樹脂をペレッ
ト化し、射出成形によりＤＶＤ＋ＲＷ用の貼り合せ基板
として用いた。その結果、再生しないポリカーボネート
樹脂貼り合せ基板と同等の機械特性を有し、実用に耐え
得るものであった。Example 1 The CD-RW medium was placed on the lower electrode of the polycarbonate resin recovery device of FIG. 4, and the pressure inside the device was reduced to 0.1 Pa. Then, Ar and CO gas were mixed at 5: 5 in the recovery device.
Was introduced at a flow rate of 10 sccm. Then 1
A high frequency of 3.56 MHz was discharged at a power of 3 kW / 200 mmφ for 20 minutes to remove the ultraviolet curable resin layer. Next, Al reflective layer, AgInSbTe recording layer, ZnS.S
The iO 2 layer was similarly removed by physical etching with Ar. As a result of the above operation, only a polycarbonate resin was obtained. To confirm the quality of this polycarbonate resin, the transparency, Young's modulus, and Tg were confirmed.
The value was equivalent to that of the polycarbonate resin substrate of the RW medium. Next, the recovered polycarbonate resin was pelletized and used as a bonded substrate for DVD + RW by injection molding. As a result, it had mechanical properties equivalent to those of the polycarbonate resin-bonded substrate that was not regenerated, and could withstand practical use.
【００１１】[0011]
【発明の効果】ポリカーボネート樹脂基板上に、金属層
及び紫外線硬化樹脂層を有する光記録媒体を処理して、
金属層及び紫外線硬化樹脂層を除去する際に、乾式エッ
チング手段を利用することによって、高品質のポリカー
ボネート樹脂が回収できる。また、乾式エッチング手段
として、低温プラズマ、イオンビーム、レーザービー
ム、光励起を利用することにより、異種物質を選択的に
除去でき、且つ低温プロセスとなるため、より高品質の
ポリカーボネート樹脂が回収できる。The optical recording medium having a metal layer and an ultraviolet curable resin layer is processed on a polycarbonate resin substrate,
When removing the metal layer and the ultraviolet curable resin layer, a high quality polycarbonate resin can be recovered by using a dry etching means. Further, by using low-temperature plasma, ion beam, laser beam, and photoexcitation as the dry etching means, different kinds of substances can be selectively removed and a low-temperature process is performed, so that a higher quality polycarbonate resin can be recovered.
【図１】一般的なＣＤ−Ｒ媒体の層構成を示す図。FIG. 1 is a diagram showing a layer structure of a general CD-R medium.
【図２】一般的なＣＤ−ＲＷ媒体の層構成を示す図。FIG. 2 is a diagram showing a layer structure of a general CD-RW medium.
【図３】一般的な音楽ＣＤ、ＣＤ−ＲＯＭ媒体の層構成
を示す図。FIG. 3 is a diagram showing the layer structure of a general music CD or CD-ROM medium.
【図４】低温プラズマを利用した本発明の光記録媒体処
理装置の一例を示す図。FIG. 4 is a diagram showing an example of an optical recording medium processing apparatus of the present invention utilizing low temperature plasma.
１ 基板 ２ 有機色素層 ３ 光反射金属層 ４ 紫外線硬化樹脂層 ５ 印刷層 ６ 誘電体層 ７ 相変化記録層 ８ 誘電体層 ９ 光反射金属層 1 substrate 2 Organic dye layer 3 Light-reflecting metal layer 4 UV curable resin layer 5 printing layers 6 Dielectric layer 7 Phase change recording layer 8 Dielectric layer 9 Light-reflecting metal layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） // Ｂ２９Ｋ 69:00 Ｂ２９Ｋ 69:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI theme code (reference) // B29K 69:00 B29K 69:00
Claims (6)
び紫外線硬化樹脂層を有する光記録媒体から、金属層及
び紫外線硬化樹脂層を除去して、ポリカーボネート樹脂
を回収するに際し、乾式エッチング手段を利用すること
を特徴とする光記録媒体の処理方法。1. A dry etching means is used for recovering the polycarbonate resin by removing the metal layer and the ultraviolet curing resin layer from the optical recording medium having the metal layer and the ultraviolet curing resin layer on the polycarbonate resin substrate. A method for processing an optical recording medium characterized by the above.
金属層、紫外線硬化樹脂層、誘電体層を除去することを
特徴とする請求項１記載の光記録媒体の処理方法。2. An optical recording medium further comprising a dielectric layer,
The method for treating an optical recording medium according to claim 1, wherein the metal layer, the ultraviolet curable resin layer and the dielectric layer are removed.
マ、イオンビーム、レーザービーム、光励起の何れかを
利用したものであることを特徴とする請求項１又は２記
載の光記録媒体の処理方法。3. The method for processing an optical recording medium according to claim 1, wherein the dry etching means uses any one of low temperature plasma, ion beam, laser beam, and photoexcitation.
び紫外線硬化樹脂層を有する光記録媒体を載置する手
段、該光記録媒体を乾式エッチングして金属層及び紫外
線硬化樹脂層を除去し、ポリカーボネート樹脂を回収す
る手段を備えたことを特徴とする光記録媒体の処理装
置。4. A means for placing an optical recording medium having a metal layer and an ultraviolet curing resin layer on a polycarbonate resin substrate, the optical recording medium being dry-etched to remove the metal layer and the ultraviolet curing resin layer, and a polycarbonate resin. An apparatus for processing an optical recording medium, comprising a means for collecting the optical recording medium.
を有する光記録媒体を載置する手段、該光記録媒体を乾
式エッチングして金属層、紫外線硬化樹脂層及び誘電体
層を除去し、ポリカーボネート樹脂を回収する手段を備
えたことを特徴とする光記録媒体の処理装置。5. A means for mounting an optical recording medium having a metal layer, an ultraviolet curable resin layer and a dielectric layer, and the optical recording medium is dry-etched to remove the metal layer, the ultraviolet curable resin layer and the dielectric layer. An apparatus for processing an optical recording medium, comprising means for recovering a polycarbonate resin.
装置により回収されたポリカーボネート樹脂を基板材料
として用いた光記録媒体。6. An optical recording medium using a polycarbonate resin recovered by the method or apparatus according to claim 1 as a substrate material.
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|---|---|---|---|
| JP2002075030A JP4051217B2 (en) | 2002-03-18 | 2002-03-18 | Optical recording medium processing method and processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002075030A JP4051217B2 (en) | 2002-03-18 | 2002-03-18 | Optical recording medium processing method and processing apparatus |
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| Publication Number | Publication Date |
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| JP4051217B2 JP4051217B2 (en) | 2008-02-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268464A (en) * | 2006-03-31 | 2007-10-18 | Sharp Corp | Method of recycling waste material whose transparent conductive film has been processed, metal, metal compound and base material obtained therefrom, and apparatus for recycling |
| US7365149B2 (en) | 2005-12-12 | 2008-04-29 | Hans-Peter Brack | Equipment cleaning in the manufacture of polycarbonates |
| JP2008246428A (en) * | 2007-03-30 | 2008-10-16 | Sharp Corp | Recycling device of waste material, recycling method using the same, and metal, metal compound, and base material obtained by this method |
-
2002
- 2002-03-18 JP JP2002075030A patent/JP4051217B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7365149B2 (en) | 2005-12-12 | 2008-04-29 | Hans-Peter Brack | Equipment cleaning in the manufacture of polycarbonates |
| JP2007268464A (en) * | 2006-03-31 | 2007-10-18 | Sharp Corp | Method of recycling waste material whose transparent conductive film has been processed, metal, metal compound and base material obtained therefrom, and apparatus for recycling |
| JP2008246428A (en) * | 2007-03-30 | 2008-10-16 | Sharp Corp | Recycling device of waste material, recycling method using the same, and metal, metal compound, and base material obtained by this method |
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| Publication number | Publication date |
|---|---|
| JP4051217B2 (en) | 2008-02-20 |
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