JPH06247751A - Method for recovering glass from laminated glass - Google Patents
Method for recovering glass from laminated glassInfo
- Publication number
- JPH06247751A JPH06247751A JP5964293A JP5964293A JPH06247751A JP H06247751 A JPH06247751 A JP H06247751A JP 5964293 A JP5964293 A JP 5964293A JP 5964293 A JP5964293 A JP 5964293A JP H06247751 A JPH06247751 A JP H06247751A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- laminated glass
- recovering
- laminated
- glasses
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C23/00—Other surface treatment of glass not in the form of fibres or filaments
- C03C23/0075—Cleaning of glass
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、合せガラスからガラス
を回収する方法に関する。FIELD OF THE INVENTION The present invention relates to a method for recovering glass from laminated glass.
【０００２】[0002]
【従来の技術】合せガラスには一部の自動車窓ガラスの
ように組成の異なる２種類のガラスをＰＶＢ中間膜によ
り接着し構成されるものがある。例えば外板には熱線吸
収ガラスのような着色ガラスを、内板には普通の板ガラ
スを用いるタイプのものである。かかる合せガラスから
ガラスを分離回収する場合に、内板と外板を同時に回収
したのではその組成が異なるために、組成管理が厳しい
高品質ガラスの原料としては再利用することができなく
なる。従来このような合せガラスから内板、外板を別々
に回収する方法は知られていない。2. Description of the Related Art Some laminated glass, such as some automobile window glasses, is formed by bonding two kinds of glass having different compositions with a PVB interlayer film. For example, a colored glass such as heat ray absorbing glass is used for the outer plate, and a normal plate glass is used for the inner plate. When the glass is separated and collected from such laminated glass, if the inner plate and the outer plate are collected at the same time, since the compositions are different, it cannot be reused as a raw material for high-quality glass with strict composition control. Conventionally, a method of separately recovering an inner plate and an outer plate from such a laminated glass has not been known.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、従来知られ
ていなかったこのような合せガラスから内板・外板を別
々に回収する方法を新規に提供することを目的とするも
のである。従来は組成の異なる内板・外板を別々に分離
回収する方法が知られていないため、不要になった合せ
ガラスはそのまま埋立て廃棄されるか、そのまま溶解さ
れ、低品質のガラス又はガラス繊維等に再生されてい
た。分離回収したガラスを自動車用あるいは建築用ガラ
スのような高品質ガラスの原料として再利用するために
は、組成の異なる内板と外板とを別々に回収することが
不可欠であり、その方法が強く求められている。SUMMARY OF THE INVENTION It is an object of the present invention to newly provide a method of separately recovering an inner plate and an outer plate from such a laminated glass which has not been known. Conventionally, there is no known method to separate and collect the inner and outer plates with different compositions, so the laminated glass that is no longer needed is either landfilled as it is or melted as it is, resulting in poor quality glass or glass fiber. Had been replayed. In order to reuse the separated and recovered glass as a raw material for high-quality glass such as glass for automobiles or construction, it is indispensable to recover the inner plate and outer plate having different compositions separately. There is a strong demand.
【０００４】[0004]
【課題を解決するための手段】本発明は、前述の問題を
解決すべくなされたものであり、合せガラスを中間膜が
軟化する温度に加熱し、内板と外板を別々に回収するこ
とを特徴とする合せガラスからガラスを回収する方法を
提供するものである。本発明において、中間膜が軟化す
る温度まで加熱した合せガラスの内板と外板とを別々に
中間膜から分離する方法は、これら両板を真空チャック
により保持し分離するか、あるいは片側のガラスのみを
保持しもう一方のガラスを分離する。この場合、通常は
ガラスを保持しながら加熱するが、加熱した時点で保持
してもよい。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, in which a laminated glass is heated to a temperature at which an interlayer film softens, and an inner plate and an outer plate are recovered separately. And a method for recovering glass from a laminated glass. In the present invention, the method of separately separating the inner plate and outer plate of the laminated glass heated to a temperature at which the interlayer film is softened from the interlayer film is carried out by holding both these plates by a vacuum chuck or separating them, or glass on one side. Hold only and separate the other glass. In this case, the glass is usually heated while being held, but it may be held at the time of heating.
【０００５】片側のガラスのみを保持する方法として
は、真空チャックや爪状の物を内／外板の間に差し込む
方法が使用でき、ガラスの保持は水平、斜め、垂直のい
ずれでもよいが、自重で下側のガラスを離すことができ
る点で水平に保持する方法が好ましい。加熱する温度と
しては１５０〜２５０℃、好ましくは１８０〜２３０℃
とすると、分離するまでの時間があまり長くなり過ぎ
ず、また中間膜に着火しないようにする意味で望まし
い。As a method for holding only one side of the glass, a vacuum chuck or a method of inserting a claw-shaped object between the inner and outer plates can be used. The glass may be held horizontally, diagonally or vertically, but it is possible to use the self-weight. A method of holding the lower glass horizontally is preferable in that the lower glass can be separated. The heating temperature is 150 to 250 ° C, preferably 180 to 230 ° C
In that case, it is desirable that the time until separation does not become too long and that the intermediate film is not ignited.
【０００６】別々に回収したガラスは付着している中間
膜を剥したのち再生用にするが、温水につけると中間膜
の接着力が低下し容易に剥すことができる。加熱方法に
水蒸気を利用すると、中間膜がガラスからより一層分離
しやすくなる。The separately collected glass is reused after the attached intermediate film is peeled off. However, when the glass is soaked in warm water, the adhesive force of the intermediate film is lowered and the glass can be easily peeled off. When steam is used for the heating method, the interlayer film is more easily separated from the glass.
【０００７】図１は本発明の一例のフローチャートを示
す。収集された合せガラスは内板と外板の品種に応じて
同一品種毎に選別する。次いでこれらの合せガラスを加
熱炉に投入して中間膜が軟化する温度まで加熱し、その
後に内板と外板とを分離する。分離されたこれらガラス
の少くとも一方には中間膜が接着しているので、この中
間膜が容易に剥離できる場合には、分離後直ちに行うこ
ともできるが、通常はこれらのガラスを温水槽に投入し
て中間膜が含水によりその接着力が低下するまで浸漬し
ておく。この場合、品種の異なるガラスはガラスの回収
を品種別に行いやすくするために、望ましくは別々の温
水槽に分けて投入するようにする。FIG. 1 shows a flow chart of an example of the present invention. The collected laminated glass is sorted into the same type according to the type of inner plate and outer plate. Next, these laminated glasses are put into a heating furnace and heated to a temperature at which the interlayer film softens, and thereafter, the inner plate and the outer plate are separated. Since at least one of these separated glasses has an intermediate film adhered to it, if this intermediate film can be easily peeled off, it can be carried out immediately after separation, but usually these glasses are placed in a warm water tank. It is charged and immersed until the adhesive strength of the interlayer film decreases due to water content. In this case, in order to facilitate the collection of glass for different types of glass, it is desirable to separately put the glass into different hot water tanks.
【０００８】ガラスから中間膜を剥すには、前記水槽に
撹拌装置を設けて、中間膜の接着力が十分に低下もしく
は消失した状態のガラスに水流を作用させ、その水力に
より中間膜をガラスから取り除き、ガラスと中間膜とを
分けて回収する。In order to peel off the interlayer film from the glass, a stirring device is provided in the water tank, and a water flow is applied to the glass in a state where the adhesive force of the interlayer film is sufficiently reduced or disappeared, and the water force causes the interlayer film to be removed from the glass. Remove and collect the glass and interlayer separately.
【０００９】なお、本発明における内板と外板との分離
は、両者が異なる組成である場合はもちろんのこと、同
じ組成であってもガラスと中間膜とを容易に分離できる
ため、ガラスを回収する方法として有効である。さら
に、両者が同じ組成であっても異なる組成であっても、
一方のガラスの表面に黒セラミック塗料等の被覆層が設
けてある場合には、両者を別々に回収できることは、品
質のよいガラスの再生には有効である。The separation of the inner plate and the outer plate according to the present invention is not limited to the case where the two have different compositions, but even if they have the same composition, the glass and the intermediate film can be easily separated, so that the glass is separated. It is effective as a method of collecting. Furthermore, whether they have the same composition or different compositions,
When a coating layer of black ceramic paint or the like is provided on the surface of one of the glasses, it is effective to recover both of them so that they can be collected separately.
【００１０】[0010]
【実施例】次に本発明の実施例を図２にしたがって説明
する。図２（ａ）のように、合せガラスの片面すなわち
上側ガラス（内板）１を真空チャック４により保持して
加熱炉５の中に入れる。このとき、加熱炉５はヒーター
６により約１５０℃としておき、中間膜２が加熱により
軟化して下側ガラス（外板）３が図２（ｂ）のように自
重によってコンベヤ７上に落下したら、コンベヤを作動
しガラス３を図２（ｃ）に示すように加熱炉から取り出
し、約９０℃の温水に浸漬した。次いで上側ガラス１も
真空チャック４から解放してコンベヤ７により炉内から
搬出して、同様に温水に浸漬した。中間膜２が含水によ
り接着力が低下したとき、ガラスから剥がして取り除
き、ガラス１，３を別々に回収することができた。Embodiment An embodiment of the present invention will be described below with reference to FIG. As shown in FIG. 2A, one surface of the laminated glass, that is, the upper glass (inner plate) 1 is held by a vacuum chuck 4 and placed in a heating furnace 5. At this time, the heating furnace 5 is kept at about 150 ° C. by the heater 6, and when the intermediate film 2 is softened by heating and the lower glass (outer plate) 3 falls on the conveyor 7 by its own weight as shown in FIG. 2B. Then, the conveyor was operated and the glass 3 was taken out of the heating furnace as shown in FIG. 2 (c) and immersed in warm water of about 90 ° C. Next, the upper glass 1 was also released from the vacuum chuck 4, carried out of the furnace by the conveyor 7, and similarly immersed in warm water. When the adhesive strength of the interlayer film 2 decreased due to the water content, the interlayer film 2 was peeled off from the glass and removed, and the glasses 1 and 3 could be recovered separately.
【００１１】[0011]
【発明の効果】本発明は、従来埋立て廃棄又は低品質の
ガラス等としてのみ再生されていた合せガラスから、ガ
ラスのみを内板・外板を分別して回収することができる
優れた効果を有し、資源の有効利用、廃棄物の発生量の
低減等の効果が有る。INDUSTRIAL APPLICABILITY The present invention has an excellent effect that only the glass can be collected by separating the inner plate and the outer plate from the laminated glass which has been conventionally discarded as landfill or recycled as low quality glass or the like. However, there are effects such as effective use of resources and reduction of waste generation.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施方法を示すフローチャートFIG. 1 is a flowchart showing a method for carrying out the present invention.
【図２】（ａ）〜（ｃ）は本発明の実施例を示す側面概
略図2A to 2C are schematic side views showing an embodiment of the present invention.
１：上側ガラス ２：中間膜 ３：下側ガラス ４：真空チャック ５：加熱炉 ７：コンベヤ 1: Upper glass 2: Intermediate film 3: Lower glass 4: Vacuum chuck 5: Heating furnace 7: Conveyor
Claims (2)
し、内板と外板を中間膜から別々に分離して回収するこ
とを特徴とする合せガラスからガラスを回収する方法。1. A method for recovering glass from laminated glass, which comprises heating the laminated glass to a temperature at which the intermediate film softens, and separating and recovering the inner plate and the outer plate separately from the intermediate film.
ラスを水平に保持し、該合せガラスを中間膜が軟化する
まで加熱し、下側ガラスを自重により上側ガラスから分
離した後、これらガラスに付着している中間膜を含水に
より接着力を低下せしめガラスから取り除くことを特徴
とする請求項１の合せガラスからガラスを回収する方
法。2. A laminated glass is held horizontally by supporting the upper glass, the laminated glass is heated until the interlayer film softens, and the lower glass is separated from the upper glass by its own weight. The method for recovering glass from laminated glass according to claim 1, wherein the adhering interlayer film is removed from the glass by reducing the adhesive force by containing water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5964293A JPH06247751A (en) | 1993-02-24 | 1993-02-24 | Method for recovering glass from laminated glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5964293A JPH06247751A (en) | 1993-02-24 | 1993-02-24 | Method for recovering glass from laminated glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06247751A true JPH06247751A (en) | 1994-09-06 |
Family
ID=13119083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5964293A Pending JPH06247751A (en) | 1993-02-24 | 1993-02-24 | Method for recovering glass from laminated glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06247751A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7909959B2 (en) | 2003-04-14 | 2011-03-22 | Sekisui Chemical Co., Ltd. | Method for releasing adhered article |
| CN106183358A (en) * | 2016-07-06 | 2016-12-07 | 中国航空工业集团公司北京航空材料研究院 | A kind of method separating laminated glass fracture |
| CN110834027A (en) * | 2019-04-09 | 2020-02-25 | 信义玻璃工程（东莞）有限公司 | Method for recycling laminated glass |
-
1993
- 1993-02-24 JP JP5964293A patent/JPH06247751A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7909959B2 (en) | 2003-04-14 | 2011-03-22 | Sekisui Chemical Co., Ltd. | Method for releasing adhered article |
| CN106183358A (en) * | 2016-07-06 | 2016-12-07 | 中国航空工业集团公司北京航空材料研究院 | A kind of method separating laminated glass fracture |
| CN110834027A (en) * | 2019-04-09 | 2020-02-25 | 信义玻璃工程（东莞）有限公司 | Method for recycling laminated glass |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU765247B2 (en) | Semiconductor device, solar cell module and methods for their dismantlement | |
| CN113409690B (en) | Large-size display screen laminating process | |
| JP2604427B2 (en) | Molded glass sheet and method for producing the same | |
| CN212760298U (en) | Recovery device for complete glass photovoltaic module | |
| JPH06247751A (en) | Method for recovering glass from laminated glass | |
| JPH091737A (en) | Forming of laminate made from glass and plastic | |
| KR101157793B1 (en) | Tempered Glass Manufacture Method | |
| JP6154924B1 (en) | Transparent cover layer separation and collection method | |
| US4863540A (en) | Process for manufacturing architectural glass | |
| JP2007204706A (en) | Method for peeling pressure-sensitive adhesive sheet by using laser beam | |
| JPH08156187A (en) | Glass resin composite panel | |
| JPS6272548A (en) | Production of glass laminate | |
| JP2009050801A (en) | Method for separation treatment of double insulating glass | |
| JPH06247752A (en) | Separation of glass of laminated glass from layer | |
| JP3862924B2 (en) | Optical film laminate | |
| JP2534395Y2 (en) | Labeled containers for easy recycling | |
| JPH07291682A (en) | Method for separating interlayer of laminated glass and production of solid fuel | |
| JP2018131341A (en) | Method and apparatus for recycling glass laminate | |
| JPS56150476A (en) | Recovery of metallic foil | |
| JPH06220245A (en) | Method for separating polyurethane composite foam | |
| JP3181680B2 (en) | Preparation method and apparatus | |
| JPH04349152A (en) | Method for separating and recovering glass sheet from laminated safety glass sheet | |
| JP2000148021A (en) | Method for peeling polyolefinic label | |
| JPH11293207A (en) | Thermally eliminable pressure-sensitive adhesive sheet | |
| WO2023285941A1 (en) | Method for recycling scrap glass from exhausted photovoltaic panels |