JP3148363B2 - Resin recovery method - Google Patents
Resin recovery methodInfo
- Publication number
- JP3148363B2 JP3148363B2 JP15671792A JP15671792A JP3148363B2 JP 3148363 B2 JP3148363 B2 JP 3148363B2 JP 15671792 A JP15671792 A JP 15671792A JP 15671792 A JP15671792 A JP 15671792A JP 3148363 B2 JP3148363 B2 JP 3148363B2
- Authority
- JP
- Japan
- Prior art keywords
- deposited
- metal
- film
- vapor
- aluminum
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0286—Cleaning means used for separation
- B29B2017/0289—Washing the materials in liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2069/00—Use of PC, i.e. polycarbonates or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
-
- 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
-
- 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
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチック成形品上
に蒸着された金属膜の剥離方法に関する。更に詳しく
は、プラスチックを回収再利用するために、プラスチッ
ク成形品上に蒸着された金属膜を剥離する方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing a metal film deposited on a plastic molded product. More specifically, the present invention relates to a method for removing a metal film deposited on a plastic molded product in order to collect and reuse the plastic.
【０００２】[0002]
【従来の技術】プラスチックは極めて広い分野で利用さ
れており、近年その廃棄量が増大し、社会問題化してい
る。このため、不要になったプラスチックを回収し、再
利用したり又は原料に還元することが検討されている。
一方プラスチックによっては金属蒸着膜を施して使用さ
れており、例えばポリカーボネート樹脂、ポリメチルメ
タクリレート樹脂、アモルファスポリオレフィン樹脂等
は透明性、耐久性等に優れているがゆえに光ディスク基
板等の光学機器用材料に多量使用されている。光ディス
ク基板上にはアルミニウム等の金属反射膜が蒸着されて
おり、その分離が難しいため、回収再利用することは困
難であった。この解決方法として、酸やアルカリで処理
して金属蒸着膜を溶解する方法が考えられる。しかしな
がら、酸やアルカリで処理すると、プラスチックに分子
量低下等の悪影響が生じて再利用できず、しかも処理後
の廃水処理等にも問題が生じる。2. Description of the Related Art Plastics are used in a very wide range of fields, and the amount of waste plastics has been increasing in recent years and has become a social problem. For this reason, it has been studied to collect and reuse unnecessary plastics or reduce them to raw materials.
On the other hand, some plastics are used after applying a metal vapor deposition film.For example, polycarbonate resin, polymethyl methacrylate resin, amorphous polyolefin resin, etc. are excellent in transparency, durability and the like, so they are used as materials for optical devices such as optical disc substrates. Used in large quantities. A metal reflective film such as aluminum is deposited on the optical disk substrate, and it is difficult to separate it, so that it has been difficult to collect and reuse it. As a solution to this, a method of dissolving the metal deposition film by treating with an acid or an alkali can be considered. However, when treated with an acid or an alkali, the plastic has an adverse effect such as a decrease in molecular weight and cannot be reused, and furthermore, a problem occurs in the treatment of waste water after the treatment.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、金属蒸着膜
を有するプラスチック成形品の回収再利用を可能にする
ために、プラスチックに悪影響を及ぼすことなく金属蒸
着膜を容易に剥離する方法を提供することを目的とす
る。SUMMARY OF THE INVENTION The present invention provides a method for easily peeling off a metal-deposited film without adversely affecting the plastic so that a plastic molded article having the metal-deposited film can be recovered and reused. The purpose is to do.
【０００４】本発明者は、この目的を達成せんとして鋭
意研究を重ねた結果、金属蒸着膜が施されているプラス
チック成形品を熱水で処理することにより、金属蒸着膜
が容易に剥離することを見出した。本発明は、この知見
に基ずき更に検討した結果完成したものである。The inventor of the present invention has made intensive studies to achieve this object, and as a result, it has been found that a metal molded film is easily peeled off by treating a plastic molded product provided with the metal vapor deposited film with hot water. Was found. The present invention has been completed as a result of further studies based on this finding.
【０００５】[0005]
【課題を解決するための手段】本発明は、金属蒸着膜を
有し、ポリカーボネート樹脂またはアモルファスポリオ
レフィン樹脂より形成された光ディスクを７０℃以上の
熱水中で加熱することによって該蒸着膜を剥離すること
を特徴とする樹脂の回収方法である。Means for Solving the Problems The present invention, have a vapor-deposited metal film, a polycarbonate resin or amorphous Polio
This is a method for recovering a resin, characterized in that an optical disk formed of a refin resin is heated in hot water of 70 ° C. or more to peel off the deposited film.
【０００６】本発明で対象にするプラスチック成形品
は、金属蒸着膜が施されているプラスチック成形品であ
れば、任意のものでよく、金属蒸着膜の上に更にUVコー
トされたプラスチック成形品であってもよい。特に好ま
しい対象としては、例えば金属膜が蒸着され且つこの蒸
着膜の上にUVコートされた光ディスク、光カード、コン
パクトディスク、ミニディスク、ビデオディスク等の不
良品、返品等があげられる。金属蒸着膜が施されている
プラスチック成形品は、本発明の熱水処理する前に予め
その金属蒸着面に傷をつけるか又は粉砕するのが好まし
い。本発明の熱水処理に使用する水はイオン交換水、水
道水、工業用水いずれでもよく、特にイオン交換水が好
ましい。[0006] The plastic molded article to be used in the present invention may be any plastic molded article provided with a metal deposited film, and may be a plastic molded article further coated with UV on the metal deposited film. There may be. Particularly preferred objects include defective products such as optical disks, optical cards, compact disks, minidisks, video disks, etc., on which a metal film is vapor-deposited and UV-coated on the vapor-deposited film, and returns. It is preferable that the metal-deposited surface of the plastic molded article on which the metal-deposited film is formed is previously scratched or crushed before the hydrothermal treatment of the present invention. The water used for the hot water treatment of the present invention may be any of ion-exchanged water, tap water, and industrial water, and is particularly preferably ion-exchanged water.
【０００７】熱水処理は常圧、加圧のいずれでもよく、
例えばオートクレーブ等を使用して圧力を加えることに
より処理時間を短縮することもできる。熱水温度は７０
℃以上であり、７０℃より低い温度にしたのでは金属蒸
着膜が剥離しない。特に好ましいのは沸騰水であり、熱
水処理に際し、例えば超音波振動等の物理的な振動を加
えることもできる。熱水処理時間はプラスチック成形品
の形状、蒸着膜の金属の種類、処理条件、処理方法等に
より異なり一概に特定できないが、例えばアルミニウム
を蒸着した厚さ１．２mmのポリカーボネート樹脂製板の
蒸着面にカッターナイフで切り傷を付けたものを、常圧
の沸騰水中に浸漬した場合は２時間程度で剥離する。[0007] The hot water treatment may be either normal pressure or pressure.
For example, the processing time can be shortened by applying pressure using an autoclave or the like. Hot water temperature is 70
When the temperature is higher than 70 ° C. and lower than 70 ° C., the metal deposition film does not peel off. Particularly preferred is boiling water, and a physical vibration such as an ultrasonic vibration can be applied during the hot water treatment. The hot water treatment time depends on the shape of the plastic molded product, the type of metal of the deposited film, the treatment conditions, the treatment method, etc., and cannot be specified unconditionally. For example, the deposition surface of a 1.2 mm thick polycarbonate resin plate on which aluminum is deposited When a cut is made with a cutter knife and then immersed in boiling water at normal pressure, it is peeled off in about 2 hours.
【０００８】熱水処理後、単に流水を流すのみで金属蒸
着膜は簡単に剥離するが、ブラシ等を使用して水洗する
と更に効果的に剥離することができる。After the hot water treatment, the metal deposited film is easily peeled off simply by flowing flowing water, but can be more effectively peeled off by washing with a brush or the like.
【０００９】[0009]
【実施例】以下に実施例をあげて本発明を更に説明す
る。なお、金属膜の剥離状態は目視により判定し、完全
に剥離した場合を○、部分的に剥離した場合を△、全く
剥離しなかった場合を×示した。金属の検出は蛍光Ｘ線
により定性分析した。全光線透過率はASTM D−１００３
に従い日本電色（株）製Σ８０により測定した。The present invention will be further described with reference to the following examples. In addition, the peeling state of the metal film was visually determined, and the case of complete peeling was indicated by ○, the case of partial peeling was indicated by Δ, and the case of no peeling was indicated by x. The detection of metals was qualitatively analyzed by X-ray fluorescence. Total light transmittance is ASTM D-1003
Was measured using a # 80 manufactured by Nippon Denshoku Co., Ltd.
【００１０】[0010]
【実施例１】アルミニウムを蒸着し、更にその上にUVコ
ートしたポリカーボネート樹脂製コンパクトディスクの
蒸着面にカッターナイフで切り傷を付けて７０℃に保持
したイオン交換水中に２０時間放置した後水洗した。ア
ルミニウム膜は完全に剥離しており、剥離後のディスク
には蛍光Ｘ線でアルミニウムは検出されず、全光線透過
率は９０％であった。Example 1 Aluminum was vapor-deposited, and a vapor-deposited surface of a polycarbonate resin compact disc coated with UV was cut with a cutter knife, left in ion-exchanged water kept at 70 ° C. for 20 hours, and then washed with water. The aluminum film was completely peeled off, no aluminum was detected by fluorescent X-rays on the disc after peeling, and the total light transmittance was 90%.
【００１１】[0011]
【実施例２】アルミニウムを蒸着し、更にその上にUVコ
ートしたポリカーボネート樹脂製コンパクトディスクを
沸騰水中に５時間放置した。金属蒸着膜は完全に剥離
し、剥離後のディスクには蛍光Ｘ線でアルミニウムは検
出されず、全光線透過率は９０％であった。Example 2 A compact disk made of polycarbonate resin, on which aluminum was deposited and UV-coated thereon, was left in boiling water for 5 hours. The metal-deposited film was completely peeled off, and aluminum was not detected by fluorescent X-rays on the disc after peeling, and the total light transmittance was 90%.
【００１２】[0012]
【実施例３】アルミニウムを蒸着し、更にその上にUVコ
ートしたポリカーボネート樹脂製コンパクトディスク
を、オートクレーブ等を使用して１２０℃、１．６kg／
cm2 に保持した熱水中に４時間放置した。金属蒸着膜は
完全に剥離し、剥離後のディスクには蛍光Ｘ線でアルミ
ニウムは検出されず、全光線透過率は９１％であった。Example 3 A compact disk made of polycarbonate resin, on which aluminum was vapor-deposited and further coated with UV light, was applied to an autoclave or the like at 120 ° C. and 1.6 kg / kg.
It was left in hot water maintained at cm 2 for 4 hours. The metal-deposited film was completely peeled off, aluminum was not detected by fluorescent X-rays on the disc after peeling, and the total light transmittance was 91%.
【００１３】[0013]
【実施例４】アルミニウムを蒸着し、更にその上にUVコ
ートしたアモルファスポリオレフィン樹脂［日本ゼオン
（株）製：ゼオネックス２８０］製コンパクトディスク
を沸騰水中に４時間放置した。金属蒸着膜は完全に剥離
しており、剥離後のディスクには蛍光Ｘ線でアルミニウ
ムは検出されず、全光線透過率は９０％であった。Example 4 A compact disk made of an amorphous polyolefin resin [ZEONEX 280 manufactured by Nippon Zeon Co., Ltd.] on which aluminum was vapor-deposited and further UV-coated thereon was allowed to stand in boiling water for 4 hours. The metal vapor-deposited film was completely peeled off, aluminum was not detected by fluorescent X-rays on the disc after peeling, and the total light transmittance was 90%.
【００１４】[0014]
【比較例１】アルミニウムを蒸着し、更にその上にUVコ
ートしたポリカーボネート樹脂製コンパクトディスクの
蒸着面にカッターナイフで切り傷を付けて６０℃に保持
した熱水中に２４時間放置した後水洗したが、アルミニ
ウム膜の剥離は全く認められなかった。[Comparative Example 1] Aluminum was vapor-deposited, and the vapor-deposited surface of a polycarbonate resin compact disc coated with UV was cut and cut with a cutter knife, left in hot water maintained at 60 ° C for 24 hours, and then washed with water. No peeling of the aluminum film was observed.
【００１５】上記各実施例及び比較例の結果をまとめて
表１に示した。なお、表１中の基板の種類中の記号は下
記の通りである。 PC：ポリカーボネート樹脂 APO ：アモルファスポリオレフィン樹脂Table 1 shows the results of the above Examples and Comparative Examples. The symbols in the types of the substrates in Table 1 are as follows. PC: polycarbonate resin APO: amorphous polyolefin resin
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【発明の効果】本発明によれば、プラスチック成形品上
の金属蒸着膜を、プラスチックの劣化を生じることな
く、簡便な処理で容易に剥離でき、光ディスク、光カー
ド、コンパクトディスク、ミニディスク、ビデオディス
ク等の金属蒸着膜を有するプラスチック成形品の回収再
利用が可能になり、その奏する効果は格別のものであ
る。According to the present invention, a metal vapor-deposited film on a plastic molded product can be easily peeled off by a simple processing without deteriorating the plastic, and an optical disk, an optical card, a compact disk, a mini disk, and a video can be obtained. It is possible to recover and reuse a plastic molded article having a metal vapor-deposited film such as a disk, and the effect obtained is remarkable.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−50837（ＪＰ，Ａ) 特開 平２−50838（ＪＰ，Ａ) 特開 昭58−48228（ＪＰ，Ａ) 特開 昭57−125015（ＪＰ，Ａ) 特開 昭55−160060（ＪＰ，Ａ) 特開 昭63−237912（ＪＰ，Ａ) 特開 昭58−77030（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 17/00 - 17/02 C08J 11/00 - 11/28 B09B 3/00 303 H05K 3/14 G11B 5/84 - 5/858 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-50837 (JP, A) JP-A-2-50838 (JP, A) JP-A-58-48228 (JP, A) JP-A-57-48 125015 (JP, A) JP-A-55-160060 (JP, A) JP-A-63-237912 (JP, A) JP-A-58-77030 (JP, A) (58) Fields investigated (Int. 7 , DB name) B29B 17/00-17/02 C08J 11/00-11/28 B09B 3/00 303 H05K 3/14 G11B 5/84-5/858
Claims (1)
脂またはアモルファスポリオレフィン樹脂より形成され
た光ディスクを７０℃以上の熱水中で加熱することによ
って該蒸着膜を剥離することを特徴とする樹脂の回収方
法。[Claim 1] have a vapor-deposited metal film, polycarbonate tree
Formed from fat or amorphous polyolefin resin
A method for recovering resin, characterized in that the deposited optical film is peeled off by heating the obtained optical disk in hot water of 70 ° C. or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671792A JP3148363B2 (en) | 1992-06-16 | 1992-06-16 | Resin recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15671792A JP3148363B2 (en) | 1992-06-16 | 1992-06-16 | Resin recovery method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05345321A JPH05345321A (en) | 1993-12-27 |
| JP3148363B2 true JP3148363B2 (en) | 2001-03-19 |
Family
ID=15633800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15671792A Expired - Fee Related JP3148363B2 (en) | 1992-06-16 | 1992-06-16 | Resin recovery method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3148363B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997039868A1 (en) * | 1996-04-19 | 1997-10-30 | Teijin Chemicals, Ltd. | Method of recovering resin |
| TW496792B (en) | 2000-02-22 | 2002-08-01 | Panakku Kogyo Kk | Process for recovery of synthetic resin substrate and pressured type cleaning apparatus used thereof |
| JP4523789B2 (en) | 2003-10-31 | 2010-08-11 | パナソニック株式会社 | Metal film peeling apparatus and metal film peeling method |
| JP7366661B2 (en) * | 2019-09-18 | 2023-10-23 | 株式会社クラレ | Laminated body processing method and recovery method, recovered composition and molded body |
-
1992
- 1992-06-16 JP JP15671792A patent/JP3148363B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05345321A (en) | 1993-12-27 |
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