JP3983017B2 - Security glass panel - Google Patents

Security glass panel Download PDF

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Publication number
JP3983017B2
JP3983017B2 JP2001233425A JP2001233425A JP3983017B2 JP 3983017 B2 JP3983017 B2 JP 3983017B2 JP 2001233425 A JP2001233425 A JP 2001233425A JP 2001233425 A JP2001233425 A JP 2001233425A JP 3983017 B2 JP3983017 B2 JP 3983017B2
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Japan
Prior art keywords
glass
glass panel
crime prevention
tempered
thickness
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JP2001233425A
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Japanese (ja)
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JP2003048763A (en
Inventor
茂樹 尾花
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Nippon Sheet Glass Co Ltd
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Nippon Sheet Glass Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10155—Edge treatment or chamfering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2369/00—Polycarbonates

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば、各種建築物における建屋の窓ガラスや、貴金属品の陳列ケースなどに使用される防犯用ガラスパネルに関する。
【０００２】
【従来の技術】
この種の防犯用ガラスパネルとしては、従来、下記（１）〜（４）に記載のものなどが知られている。
（１）網入りの単板ガラス。
（２）強化ガラスからなる単板ガラス。
（３）２枚の単板ガラスからなる複層ガラス。
（４）２枚以上の単板ガラスからなる合わせガラス。
【０００３】
【発明が解決しようとする課題】
しかしながら、（１）の網入り単板ガラスでは、ガラスそのものが衝撃に弱いため、例えば、バットのようなもので比較的簡単にガラスを破壊することができ、ガラスを破壊して網を切断することによって、あまり音を立てずに、かつ、比較的短時間のうちに破られる可能性がある。
その点、（２）の強化ガラスからなる単板ガラスでは、バットのような角のないものによる衝撃に対しては比較的強い。しかし、例えば、アイスピックのような先端が鋭利な金属で突かれると、比較的簡単に破壊される可能性がある。つまり、金属製の鋭利な先端がガラス内部の引張応力層にまで達すると、瞬時にして破壊されるおそれがある。
【０００４】
また、（３）の複層ガラスでは、２枚の単板ガラスから構成されているので、破壊するのに比較的時間がかかり、かつ、２枚の単板ガラス周辺が互いに接着されているので、破壊した後、周辺に残存するガラス片を取り除くのにも時間がかかることになる。したがって、防犯性能は比較的高いといえるが、今少し防犯性能の高いものが望ましく、その点で改良の余地が残されている。
それに対し、（４）の合わせガラスでは、例えば、２枚の単板ガラス間に介在される中間層の厚みを大幅に厚くしたり、あるいは、３枚以上の単板ガラスを使用して多層化することにより、上記（１）〜（３）に記載のものよりも防犯性能の高いガラスパネルを得ることができる。しかし、中間層の厚みを厚くしたり、３枚以上の単板ガラスを使用する必要があるため、どうしてもコスト高になるおそれがあり、この点に改良の余地がある。
【０００５】
本発明は、上述した従来の問題点に着目したもので、その目的は、比較的安価で、かつ、防犯性能の高い防犯用ガラスパネルを提供することである。
【０００６】
【課題を解決するための手段】
〔構成〕
請求項１の発明の特徴構成は、図１及び図３に例示するごとく、室内側Ｉに位置する強化板ガラス１と室外側Ｏに位置する強化していない板ガラス３とが、両者の厚み方向において、合成樹脂層４を介して互いに接合されて構成されているところにある。
【０００７】
【０００８】
【０００９】
請求項２の発明の特徴構成は、図３に例示するごとく、前記合成樹脂層４が、その厚みＴ４方向にポリカーボネイトで形成された保護層７を備えているところにある。
【００１０】
請求項３の発明の特徴構成は、図１及び図３に例示するごとく、前記合成樹脂層４の厚みＴ４が、０．７６ｍｍ以上であるところにある。
【００１１】
請求項４の発明の特徴構成は、前記強化板ガラス１の表面圧縮応力が、約１．１７６×１０8 Ｐａ以上であるところにある。
【００１２】
請求項５の発明の特徴構成は、前記強化板ガラス１の表面圧縮応力が、約１．４７０×１０8 Ｐａ以上であるところにある。
【００１３】
請求項６の発明の特徴構成は、図１〜図３に例示するごとく、前記強化板ガラス１の周縁における少なくとも室外側Ｏの縁部が、面取り加工により湾曲面５に形成されているところにある。
【００１４】
請求項７の発明の特徴構成は、図１及び図３に例示するごとく、前記強化板ガラス１の厚みＴ１が、５．０ｍｍ以上であるところにある。
【００１５】
なお、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。
【００１６】
〔作用および効果〕
請求項１の発明の特徴構成によれば、衝撃に対して強い強化板ガラスが室内側に位置し、その強化板ガラスが、室外側に位置する強化していない板ガラス及び合成樹脂層によって保護されることになる。
したがって、バットのようなものによる衝撃に対して比較的強い強化板ガラスが、室外側に位置する強化していない板ガラス及び合成樹脂層により保護されると同時に、その強化していない板ガラス及び合成樹脂層が、アイスピックのような先端が鋭利な金属に対する保護機能をも発揮し、たとえ先端が鋭利な金属で突かれても、その鋭利な先端が簡単に強化板ガラス内部の引張応力層にまで達するのを阻止することになる。
その結果、上述した従来の合わせガラスに比べて安価であるにもかかわらず、バットのようなものによる衝撃にも、また、アイスピックのようなものによる加撃にも比較的強い防犯用ガラスパネルを提供することができる。
【００１７】
【００１８】
さらに、請求項１の発明の特徴構成によれば、室外側の表面には、硬くて傷がつきにくく、かつ、雨や太陽熱にも強くて、いわゆる耐候性に優れた板ガラスが位置することになり、室内側に位置する合成樹脂層を確実に保護し、その結果、室内側の強化板ガラスをより確実に保護して、ガラスパネルの防犯性能を一層向上させることができる。
【００１９】
請求項２の発明の特徴構成によれば、合成樹脂層が、その厚み方向にポリカーボネイトで形成された保護層を備えているので、適度な柔軟性を備え、かつ、各種存在する合成樹脂のなかでは比較的硬いポリカーボネイトの保護層により強化板ガラスが保護され、特に、アイスピックのような鋭利なものによる加撃に対して効果的で、室内側の強化板ガラスを鋭利なものからより確実に保護することになり、強化板ガラス自体の耐衝撃性が十分に生かされて、より一層防犯性能の高いガラスパネルを提供することができる。
【００２０】
請求項３の発明の特徴構成によれば、合成樹脂層の厚みが、０．７６ｍｍ以上であるから、先端が鋭利な金属により加撃されても、その鋭利な先端が、容易に強化板ガラス内部の引張り応力層にまで達するのを阻止するため、防犯性能の高いガラスパネルを提供することができる。
【００２１】
請求項４の発明の特徴構成によれば、強化板ガラスの表面圧縮応力が、約１．１７６×１０8 Ｐａ以上、つまり、１２００ｋｇｆ／ｃｍ2 以上であるから、衝撃に対して強いのは勿論のこと、例えば、バーナなどにより加熱されても破砕のおそれが少なく、衝撃のみならず、バーナなどによる加熱にも強いガラスパネルを提供することができる。
【００２２】
請求項５の発明の特徴構成によれば、強化板ガラスの表面圧縮応力が、約１．４７０×１０8 Ｐａ以上、つまり、１５００ｋｇｆ／ｃｍ2 以上であるから、耐衝撃性と耐熱性とに優れた非常に強いガラスパネルを提供することができる。
【００２３】
請求項６の発明の特徴構成によれば、強化板ガラスの周縁における少なくとも室外側の縁部が、面取り加工により湾曲面に形成されているから、例えば、ガラスパネルの縁部にドライバーなどを差し込んでこじ開けようとしても、ドライバーが当該縁部にひっかかりにくいため、簡単にこじ開けることができず、ドライバーなどによるこじ開けにも強いガラスパネルを提供することができる。
【００２４】
請求項７の発明の特徴構成によれば、強化板ガラスの厚みが、５．０ｍｍ以上であるから、衝撃によるたわみが少なく、耐衝撃性に優れたガラスパネルを提供することができる。
【００２５】
【発明の実施の形態】
本発明による防犯用ガラスパネルの実施の形態を図面に基づいて説明する。
この防犯用ガラスパネルの第１の実施形態においては、図１に示すように、例えば、建屋の室内側Ｉに位置して厚みＴ１を有する透明な強化板ガラス１と、建屋の室外側Ｏに位置して厚みＴ２を有する衝撃吸収層２とが、両者の厚みＴ１，Ｔ２方向において熱溶着により互いに接合されて構成されている。
そして、前記衝撃吸収層２は、室外側Ｏに位置する透明な板ガラス３と、その板ガラス３の室内側Ｉの面に熱溶着により接合されるとともに、強化板ガラス１の室外側Ｏの面に熱溶着により接合される合成樹脂層４とで構成されている。
【００２６】
室内側Ｉに位置する強化板ガラス１は、素板そのものが、フロートガラス、熱線吸収フロートガラス、あるいは、熱線反射フロートガラスなどであり、その表面圧縮応力が、約１．１７６×１０8 Ｐａ以上、つまり、１２００ｋｇｆ／ｃｍ2 以上の高表面圧縮応力強化板ガラスで構成され、より具体的には、表面圧縮応力が、約１．１７６×１０8 〜約２．４５×１０8 Ｐａ（１２００〜２５００ｋｇｆ／ｃｍ2 ）の範囲内に設定されている。
より好ましくは、強化板ガラス１が、約１．４７０×１０8 Ｐａ以上、つまり、１５００ｋｇｆ／ｃｍ2 以上の表面圧縮応力を有する耐熱性を備えた高表面圧縮応力強化板ガラスで構成され、その表面圧縮応力が、約１．４７０×１０8 〜約２．４５×１０8 Ｐａ（１５００〜２５００ｋｇｆ／ｃｍ2 ）の範囲内に設定され、いずれの場合においても、その強化板ガラス１の厚みＴ１が５．０ｍｍ以上に設定されている。
【００２７】
すなわち、強化板ガラス１の表面圧縮応力が、約１．１７６×１０8 Ｐａ未満であると、衝撃により破砕するおそれがあり、また、バーナなどで加熱されると破砕するおそれがある。そして、約２．４５×１０8 Ｐａを越えると、強化処理時にガラスを６５０℃以上の高温にまで加熱する必要があるため、その高温加熱によりガラスが軟化して波状の反りが発生するおそれがある。
したがって、強化板ガラス１の表面圧縮応力を約１．１７６×１０8 〜約２．４５×１０8 Ｐａの範囲内に設定することで、衝撃や加熱による破砕を効果的に防止しながら、強化板ガラス１の品質低下を回避することができる。
また、強化板ガラス１の厚みＴ１が、５．０ｍｍ未満であると、衝撃によるたわみが大きくなって破砕するおそれがあるが、５．０ｍｍ以上に設定することで、衝撃による破砕のおそれを効果的に回避することができる。
【００２８】
前記衝撃吸収層２を構成する板ガラス３に関しては、特に高表面圧縮応力強化板ガラスを使用する必要性はなく、例えば、普通のフロートガラスや型板ガラスなどを使用することができる。
衝撃吸収層２を構成する合成樹脂層４は、例えば、ポリビニルブチラール（ＰＶＢ）やエチレン酢酸ビニル（ＥＶＡ）製のシートを強化板ガラス１と板ガラス３との間に位置させて加熱するととともに加圧して形成され、それによって、強化板ガラス１と板ガラス３とが熱溶着されるのであり、このようにして形成される透明な合成樹脂層４の厚みＴ４が、０．７６ｍｍ以上、好ましくは、１．５２ｍｍ以上になるように設定されている。
そして、前記強化板ガラス１の周縁においては、図２に拡大して示すように、その室外側Ｏの縁部が、面取り加工により湾曲面５に形成され、同様に、室内側Ｉの縁部も、面取り加工により湾曲面６に形成されている。
【００２９】
第２の実施形態においても、図３に示すように、建屋の室内側Ｉに位置する強化板ガラス１と、室外側Ｏに位置する衝撃吸収層２とが、両者の厚みＴ１，Ｔ２方向において熱溶着により互いに接合されて構成されている。
そして、衝撃吸収層２が、室外側Ｏに位置する板ガラス３と、その板ガラス３の室内側Ｉの面に熱溶着により接合され、かつ、強化板ガラス１の室外側Ｏの面に熱溶着により接合される合成樹脂層４とで構成されているのであるが、第１の実施形態と異なる点は、衝撃吸収層２を構成する合成樹脂層４の厚みＴ４方向の中間部に、ポリカーボネイトで形成された透明な保護層７が介在されて備えられていることである。
【００３０】
すなわち、第１の実施形態と同様に、強化板ガラス１は、素板そのものが、フロートガラス、熱線吸収フロートガラス、あるいは、熱線反射フロートガラスなどであり、その表面圧縮応力が、約１．１７６×１０8 〜約２．４５×１０8 Ｐａの範囲内、より好ましくは、約１．４７０×１０8 〜約２．４５×１０8 Ｐａの範囲内に設定され、かつ、厚みＴ１も５．０ｍｍ以上に設定されていて、その周縁においては、室外側Ｏと室内側Ｉの縁部が、面取り加工により湾曲面５，６に形成されている。
さらに、衝撃吸収層２を構成する板ガラス３は、フロートガラスや型板ガラスなどで構成され、合成樹脂層４も、例えば、ポリビニルブチラール（ＰＶＢ）やエチレン酢酸ビニル（ＥＶＡ）で形成されて、厚みＴ４が０．７６ｍｍ以上、好ましくは、１．５２ｍｍ以上に設定されているのに加えて、ポリカーボネイトで形成された保護層７が、合成樹脂層４の厚みＴ４方向の中間部に介在されている。
【００３１】
【００３２】
【００３３】
以上、本発明による防犯用ガラスパネルの第１〜第２の実施形態について説明したが、これら防犯用ガラスパネルは、図４の（イ）、（ロ）に示すようにして単板用のサッシュに保持される。なお、この図４においては、第１の実施形態による防犯用ガラスパネルを例にして示してあるが、第２の実施形態による防犯用ガラスパネルにおいても同様である。
図４の（イ）に示す例では、強化板ガラス１と衝撃吸収層２の端縁が、ほぼ面一に構成されていて、強化板ガラス１と衝撃吸収層２の端縁を保持するとともに、単板用のサッシュ８に挿入されるアダプタ９が、ガラスパネルとサッシュ８との間に介装され、図４の（ロ）に示す例では、強化板ガラス１の端縁が、衝撃吸収層２の端縁よりも外側にまで突出されていて、強化板ガラス１と衝撃吸収層２の端部を保持するとともに、強化板ガラス１の突出端縁が単板用のサッシュ８に挿入されるアダプタ１０が使用されて保持されている。
このようなアダプタ９，１０を使用することにより、第１〜第４の実施形態で示した防犯用ガラスパネルを単板用のサッシュ８に保持させることができ、例えば、単板からなる窓ガラスを防犯用ガラスパネルにリフォームする際、元のサッシュ８をそのまま使用してリフォームすることができる。
【００３４】
〔別実施形態〕
（１）これまでの実施形態では、室内側Ｉに位置する強化板ガラス１の周縁において、その室外側Ｏと室内側Ｉの両縁部を面取り加工して、両縁部に湾曲面５，６を形成した例を示したが、室外側Ｏの縁部のみに湾曲面５を形成して実施したり、あるいは、強化板ガラス１の周縁に湾曲面を形成せずに実施することもできる。
【００３５】
（２）これまでの実施形態では、室内側Ｉに位置する強化板ガラス１と室外側に位置する板ガラス３とを共に透明な板ガラスで構成した例を示したが、両板ガラス１，３のいずれか一方あるいは両方を表面処理により光り拡散機能を備えたすりガラスで構成することもでき、また、ガラスの組成についても、ソーダ珪酸ガラス、ソーダ石灰ガラス、ほう珪酸ガラス、アルミノ珪酸ガラス、各種結晶化ガラスなどを使用することができる。
また、防犯用ガラスパネルの用途についても、建屋の窓ガラス以外に、貴金属品の陳列ケースをはじめとして、営業用の冷蔵庫や保温装置などのような各種装置の扉や壁部など、種々の用途に使用することができる。
【図面の簡単な説明】
【図１】 防犯用ガラスパネルの第１の実施形態における断面斜視図
【図２】 防犯用ガラスパネルの第１の実施形態における要部の断面図
【図３】 防犯用ガラスパネルの第２の実施形態における断面図
【図４】 防犯用ガラスパネルのサッシュへの取り付け状態を示す断面図
【符号の説明】
１ 強化板ガラス
２ 衝撃吸収層
３ 板ガラス
４ 合成樹脂層
５ 湾曲面
７ ポリカーボネイトの保護層
Ｉ 室内側
Ｏ 室外側
Ｔ１ 強化板ガラスの厚み
Ｔ２ 衝撃吸収層の厚み
Ｔ４ 合成樹脂層の厚み[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crime prevention glass panel used for, for example, a window glass of a building in various buildings, a display case of a precious metal product, and the like.
[0002]
[Prior art]
As this kind of crime prevention glass panels, those described in the following (1) to (4) are known.
(1) Single plate glass with a net.
(2) Single plate glass made of tempered glass.
(3) Multi-layer glass composed of two single glass plates.
(4) Laminated glass made of two or more single glass plates.
[0003]
[Problems to be solved by the invention]
However, in the single sheet glass with mesh (1), since the glass itself is vulnerable to impact, the glass can be broken relatively easily with a bat or the like, and the glass is broken and the net is cut. Can be broken in a relatively short time without making much noise.
In that respect, the single plate glass made of the tempered glass (2) is relatively strong against an impact caused by an object having no corners such as a bat. However, for example, when a tip such as an ice pick is struck by a sharp metal, it may be destroyed relatively easily. That is, when the sharp tip made of metal reaches the tensile stress layer inside the glass, there is a possibility that it is instantaneously broken.
[0004]
In addition, since the multilayer glass of (3) is composed of two single glass plates, it takes a relatively long time to break, and the periphery of the two single glass plates are bonded to each other. After that, it takes time to remove the glass pieces remaining in the periphery. Therefore, although it can be said that the crime prevention performance is relatively high, it is desirable that the crime prevention performance is a little higher now, and there is room for improvement in that respect.
On the other hand, in the laminated glass of (4), for example, the thickness of the intermediate layer interposed between two single plate glasses is greatly increased, or multiple layers are formed using three or more single plate glasses. Thus, a glass panel having higher crime prevention performance than that described in the above (1) to (3) can be obtained. However, since it is necessary to increase the thickness of the intermediate layer or to use three or more single glass plates, there is a risk that the cost may increase, and there is room for improvement in this respect.
[0005]
The present invention focuses on the above-described conventional problems, and an object thereof is to provide a crime prevention glass panel that is relatively inexpensive and has high crime prevention performance.
[0006]
[Means for Solving the Problems]
〔Constitution〕
Characterizing feature of the first aspect of the invention, as illustrated in FIGS. 1 and 3, the plate glass 3 which is not reinforced located reinforced plate glass 1 and the outdoor side O located on the interior side I is better both try thickness In the direction, they are joined together via the synthetic resin layer 4 .
[0007]
[0008]
[0009]
The characteristic configuration of the invention of claim 2 is that, as illustrated in FIG. 3, the synthetic resin layer 4 includes a protective layer 7 formed of polycarbonate in the thickness T4 direction.
[0010]
The characteristic configuration of the invention of claim 3 is that, as illustrated in FIGS. 1 and 3, the thickness T4 of the synthetic resin layer 4 is 0.76 mm or more.
[0011]
The characteristic configuration of the invention of claim 4 is that the surface compressive stress of the tempered glass sheet 1 is about 1.176 × 10 8 Pa or more.
[0012]
The characteristic configuration of the invention of claim 5 is that the surface compressive stress of the reinforced plate glass 1 is about 1.470 × 10 8 Pa or more.
[0013]
The characteristic configuration of the invention of claim 6 is that, as illustrated in FIGS. 1 to 3 , at least the edge of the outdoor side O at the periphery of the tempered glass sheet 1 is formed on the curved surface 5 by chamfering. .
[0014]
The characteristic configuration of the invention of claim 7 is that, as illustrated in FIGS. 1 and 3, the thickness T1 of the tempered glass sheet 1 is 5.0 mm or more.
[0015]
In addition, as mentioned above, although the code | symbol was written in order to make contrast with drawing convenient, this invention is not limited to the structure of an accompanying drawing by this entry.
[0016]
[Action and effect]
According to the characteristic configuration of the invention of claim 1, the tempered glass plate that is strong against impact is located on the indoor side, and the tempered glass plate is protected by the non-reinforced glass plate and the synthetic resin layer located on the outdoor side. become.
Therefore, the tempered glass sheet that is relatively strong against impacts by things such as bats is protected by the non-reinforced glass sheet and the synthetic resin layer located on the outdoor side, and at the same time, the non- reinforced glass sheet and the synthetic resin layer. However, the tip of an ice pick also has a protective function against sharp metals, and even if the tip is struck by a sharp metal, the sharp tip can easily reach the tensile stress layer inside the tempered glass sheet. Will be blocked.
As a result, although it is cheaper than the above-mentioned conventional laminated glass, the glass panel for crime prevention is relatively strong against impacts such as bats and also against impacts such as ice picks. Can be provided.
[0017]
[0018]
Furthermore, according to the characteristic configuration of the invention of claim 1, the chamber outer surface, with less hard and scratch and strong the rain and solar, that excellent glass sheet so-called weather resistance is located Thus, the synthetic resin layer located on the indoor side can be reliably protected, and as a result, the reinforced plate glass on the indoor side can be more reliably protected, and the crime prevention performance of the glass panel can be further improved.
[0019]
According to a feature configuration of the invention of claim 2, synthetic resin layer is provided with the protective layer formed of polycarbonate in the thickness direction, with adequate flexibility, and the synthetic resin for various existing Among them, the reinforced plate glass is protected by a protective layer of relatively hard polycarbonate, especially effective against the impact of sharp objects such as ice picks, and the indoor reinforced plate glass is more reliably protected from sharp objects. As a result, the impact resistance of the tempered glass sheet itself can be fully utilized to provide a glass panel with even higher crime prevention performance.
[0020]
According to the characteristic configuration of the invention of claim 3 , since the thickness of the synthetic resin layer is 0.76 mm or more, even if the tip is hit by a sharp metal, the sharp tip can be easily inside the tempered glass sheet. Therefore, it is possible to provide a glass panel with high crime prevention performance.
[0021]
According to the characteristic configuration of the invention of claim 4 , the surface compressive stress of the tempered plate glass is about 1.176 × 10 8 Pa or more, that is, 1200 kgf / cm 2 or more. For example, there is little possibility of crushing even when heated by a burner or the like, and it is possible to provide a glass panel that is resistant not only to impact but also to heating by a burner or the like.
[0022]
According to the characteristic configuration of the invention of claim 5 , since the surface compressive stress of the tempered plate glass is about 1.470 × 10 8 Pa or more, that is, 1500 kgf / cm 2 or more, it is excellent in impact resistance and heat resistance. Can provide very strong glass panels.
[0023]
According to the characteristic configuration of the invention of claim 6 , since at least the outer edge of the rim of the reinforced sheet glass is formed into a curved surface by chamfering, for example, a driver or the like is inserted into the edge of the glass panel. Even if the driver tries to pry it open, it is difficult for the driver to get caught in the edge portion, so that the driver cannot easily pry it open, and a glass panel that is resistant to prying by a driver or the like can be provided.
[0024]
According to the characteristic configuration of the invention of claim 7 , since the thickness of the reinforced plate glass is 5.0 mm or more, it is possible to provide a glass panel with less impact deflection and excellent impact resistance.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a security glass panel according to the present invention will be described with reference to the drawings.
In the first embodiment of the security glass panel, as shown in FIG. 1, for example, the transparent tempered glass plate 1 having a thickness T1 located on the indoor side I of the building and the outdoor side O of the building. The shock absorbing layer 2 having a thickness T2 is joined to each other by thermal welding in the thickness T1 and T2 directions.
The shock absorbing layer 2 is bonded to a transparent plate glass 3 positioned on the outdoor side O and a surface on the indoor side I of the plate glass 3 by heat welding, and heat is applied to the surface of the reinforced plate glass 1 on the outdoor side O. It is comprised with the synthetic resin layer 4 joined by welding.
[0026]
The tempered glass sheet 1 located on the indoor side I is made of float glass, heat ray absorbing float glass, heat ray reflective float glass or the like, and its surface compressive stress is about 1.176 × 10 8 Pa or more. That is, it is composed of a high surface compressive stress strengthened flat glass of 1200 kgf / cm 2 or more, and more specifically, the surface compressive stress is about 1.176 × 10 8 to about 2.45 × 10 8 Pa (1200 to 2500 kgf / cm 2 ).
More preferably, the tempered plate glass 1 is composed of a high surface compressive stress tempered plate glass having a heat resistance having a surface compressive stress of about 1.470 × 10 8 Pa or more, that is, 1500 kgf / cm 2 or more, and its surface compression. The stress is set in a range of about 1.470 × 10 8 to about 2.45 × 10 8 Pa (1500 to 2500 kgf / cm 2 ). In any case, the thickness T1 of the tempered glass sheet 1 is 5. It is set to 0 mm or more.
[0027]
That is, if the surface compressive stress of the tempered glass sheet 1 is less than about 1.176 × 10 8 Pa, it may be crushed by impact, and may be crushed when heated by a burner or the like. And if it exceeds about 2.45 × 10 8 Pa, it is necessary to heat the glass to a high temperature of 650 ° C. or higher at the time of the tempering treatment. is there.
Accordingly, by setting the surface compressive stress of the reinforced plate glass 1 within a range of about 1.176 × 10 8 to about 2.45 × 10 8 Pa, the reinforced plate glass is effectively prevented from being crushed by impact or heating. 1 quality degradation can be avoided.
Further, when the thickness T1 of the tempered plate glass 1 is less than 5.0 mm, there is a possibility that the deflection due to the impact becomes large and the glass is crushed, but by setting it to 5.0 mm or more, the risk of crushing due to the impact is effective. Can be avoided.
[0028]
Regarding the plate glass 3 constituting the shock absorbing layer 2, it is not particularly necessary to use a high surface compressive stress strengthened plate glass, and for example, ordinary float glass or template glass can be used.
The synthetic resin layer 4 constituting the shock absorbing layer 2 is heated and pressed with a sheet made of polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA) positioned between the tempered glass sheet 1 and the glass sheet 3, for example. Thus, the tempered glass sheet 1 and the glass sheet 3 are thermally welded, and the thickness T4 of the transparent synthetic resin layer 4 thus formed is 0.76 mm or more, preferably 1.52 mm. It is set to be above.
And in the periphery of the said tempered glass sheet 1, as shown in an enlarged view in FIG. 2, the edge of the outdoor side O is formed on the curved surface 5 by chamfering. Similarly, the edge of the indoor side I is also The curved surface 6 is formed by chamfering.
[0029]
Also in the second embodiment, as shown in FIG. 3, the tempered glass sheet 1 located on the indoor side I of the building and the shock absorbing layer 2 located on the outdoor side O are heated in the thickness T1 and T2 directions. They are joined together by welding.
The shock absorbing layer 2 is bonded to the plate glass 3 positioned on the outdoor side O and the surface on the indoor side I of the plate glass 3 by thermal welding, and is bonded to the surface of the reinforced plate glass 1 on the outdoor side O by thermal welding. However, the difference from the first embodiment is that the synthetic resin layer 4 constituting the shock absorbing layer 2 is formed of polycarbonate at an intermediate portion in the thickness T4 direction. In addition, a transparent protective layer 7 is interposed.
[0030]
That is, as in the first embodiment, the reinforced plate glass 1 is such that the base plate itself is float glass, heat ray absorbing float glass, heat ray reflective float glass, or the like, and its surface compressive stress is about 1.176 ×. 10 8 to about 2.45 × 10 8 Pa, more preferably about 1.470 × 10 8 to about 2.45 × 10 8 Pa, and the thickness T1 is also 5.0 mm. As described above, at the periphery, the edges of the outdoor side O and the indoor side I are formed on the curved surfaces 5 and 6 by chamfering.
Further, the plate glass 3 constituting the shock absorbing layer 2 is made of float glass, template glass or the like, and the synthetic resin layer 4 is also made of, for example, polyvinyl butyral (PVB) or ethylene vinyl acetate (EVA), and has a thickness T4. Is set to 0.76 mm or more, preferably 1.52 mm or more, and a protective layer 7 made of polycarbonate is interposed in the middle portion of the synthetic resin layer 4 in the thickness T4 direction.
[0031]
[0032]
[0033]
Having described the first to the second embodiment of the glass panel security according to the present invention, these security glass panel of FIG. 4 (b), as shown in (b) sash for veneer Retained. In FIG. 4 , the crime prevention glass panel according to the first embodiment is shown as an example, but the same applies to the crime prevention glass panel according to the second embodiment.
In the example shown in FIG. 4A, the edges of the reinforced plate glass 1 and the shock absorbing layer 2 are substantially flush with each other, hold the edges of the reinforced plate glass 1 and the shock absorbing layer 2, and An adapter 9 inserted into the plate sash 8 is interposed between the glass panel and the sash 8, and in the example shown in FIG. An adapter 10 that protrudes to the outside of the edge and holds the ends of the reinforced plate glass 1 and the shock absorbing layer 2 and that has the protruding edge of the reinforced plate glass 1 inserted into a sash 8 for a single plate is used. Being held.
By using such adapters 9 and 10, the glass panel for crime prevention shown in the first to fourth embodiments can be held by the sash 8 for a single plate, for example, a window glass made of a single plate. Can be reformed using the original sash 8 as it is.
[0034]
[Another embodiment]
(1) In the embodiments so far, both edges of the outdoor side O and the indoor side I are chamfered at the peripheral edge of the tempered glass sheet 1 located on the indoor side I, and curved surfaces 5 and 6 are formed on both edges. However, the present invention can be carried out by forming the curved surface 5 only at the edge of the outdoor side O, or without forming the curved surface at the periphery of the tempered glass sheet 1.
[0035]
(2) In the embodiments described so far, the example in which the tempered glass sheet 1 positioned on the indoor side I and the glass sheet 3 positioned on the outdoor side are both formed of transparent plate glass has been described. One or both can be composed of ground glass with a light diffusing function by surface treatment, and the composition of the glass is soda silicate glass, soda lime glass, borosilicate glass, aluminosilicate glass, various crystallized glass, etc. Can be used.
In addition to the window glass of buildings, there are various uses such as doors and walls of various devices such as display cases for precious metal items, commercial refrigerators, and heat insulation devices. Can be used for
[Brief description of the drawings]
FIG. 1 is a cross-sectional perspective view of a security glass panel according to a first embodiment. FIG. 2 is a cross-sectional view of the main part of the security glass panel according to the first embodiment. Cross-sectional view in the embodiment
FIG. 4 is a cross-sectional view showing a state in which a security glass panel is attached to a sash.
DESCRIPTION OF SYMBOLS 1 Tempered plate glass 2 Shock absorption layer 3 Plate glass 4 Synthetic resin layer 5 Curved surface 7 Polycarbonate protective layer I Indoor side O Outdoor side T1 Thickness of reinforced plate glass T2 Thickness of shock absorption layer T4 Thickness of synthetic resin layer

Claims (7)

室内側に位置する強化板ガラスと、室外側に位置する強化していない板ガラスとが、両者の厚み方向において、合成樹脂層を介して互いに接合されて構成されている防犯用ガラスパネル。A reinforced plate glass located on the interior side, the glass sheet has not been strengthened positioned at the outside side, in both the thickness direction, the glass panel security via the synthetic resin layer is composed are joined together. 前記合成樹脂層が、その厚み方向にポリカーボネイトで形成された保護層を備えている請求項１に記載の防犯用ガラスパネル。The crime prevention glass panel according to claim 1 , wherein the synthetic resin layer includes a protective layer formed of polycarbonate in a thickness direction thereof. 前記合成樹脂層の厚みが、０．７６ｍｍ以上である請求項１又は２のいずれか１項に記載の防犯用ガラスパネル。The glass panel for crime prevention of any one of Claim 1 or 2 whose thickness of the said synthetic resin layer is 0.76 mm or more. 前記強化板ガラスの表面圧縮応力が、約１．１７６×１０8Ｐａ以上である請求項１〜３のいずれか１項に記載の防犯用ガラスパネル。The surface compressive stress of the reinforced plate glass, security glass panel according to any one of claims 1 to 3, about 1.176 × 10 8 Pa or more. 前記強化板ガラスの表面圧縮応力が、約１．４７０×１０8Ｐａ以上である請求項１〜４のいずれか１項に記載の防犯用ガラスパネル。The glass panel for crime prevention according to any one of claims 1 to 4 , wherein the tempered plate glass has a surface compressive stress of about 1.470 x 10 8 Pa or more. 前記強化板ガラスの周縁における少なくとも室外側の縁部が、面取り加工により湾曲面に形成されている請求項１〜５のいずれか１項に記載の防犯用ガラスパネル。The glass panel for crime prevention of any one of Claims 1-5 in which the edge part of the outdoor side in the periphery of the said tempered sheet glass is formed in the curved surface by the chamfering process. 前記強化板ガラスの厚みが、５．０ｍｍ以上である請求項１〜６のいずれか１項に記載の防犯用ガラスパネル。The glass panel for crime prevention according to any one of claims 1 to 6 , wherein the tempered plate glass has a thickness of 5.0 mm or more.
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