JP3648908B2 - Double glazing - Google Patents

Double glazing Download PDF

Info

Publication number
JP3648908B2
JP3648908B2 JP04265697A JP4265697A JP3648908B2 JP 3648908 B2 JP3648908 B2 JP 3648908B2 JP 04265697 A JP04265697 A JP 04265697A JP 4265697 A JP4265697 A JP 4265697A JP 3648908 B2 JP3648908 B2 JP 3648908B2
Authority
JP
Japan
Prior art keywords
glass
spacer
adhesive
layer
thickness
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
Application number
JP04265697A
Other languages
Japanese (ja)
Other versions
JPH10238235A (en
Inventor
省吾 小寺
祥孝 松山
崇 澁谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Inc
Original Assignee
Asahi Glass Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP04265697A priority Critical patent/JP3648908B2/en
Publication of JPH10238235A publication Critical patent/JPH10238235A/en
Application granted granted Critical
Publication of JP3648908B2 publication Critical patent/JP3648908B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Securing Of Glass Panes Or The Like (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、複層ガラスに関する。
【0002】
【従来の技術】
複層ガラスは、図に示すように最低2枚のガラス板1a、1bが、内部に乾燥剤(吸湿剤)を有する金属製のスペーサ2を介して対向配置されて、中空層が形成されるようにガラス板1a、1bとが隔置されてなる。この場合、ガラス板1a、1bとスペーサ2との間にブチル系ゴム等からなる一次シール材3を介在させることによって、中空層が外気から遮断される。そして、対向しているガラス板1a、1bの周縁部内面とスペーサ2の外周面とで構成された空隙(凹部)がポリスルフィド系またはシリコーン系で代表されるような常温硬化型樹脂からなる常温硬化型シール材で封着されている。
【0003】
のような複層ガラスの製造工程は、上記のようにスペーサ2にてガラス板1a、1bを隔置する際に一次シール材を設け、さらに二次シール材である常温硬化型シール材によって封着する工程が必要であった。そのため工数が多く煩雑な作業をともなっていた。そこで、これらの製造工程の簡略化や自動化が検討されており、アルミニウム製スペーサを折り曲げ方式にしたり、常温硬化型シール材の塗布方法を自動化するなどの生産性改良等が検討され、提案されている。
【0004】
しかし、常温硬化型シール材を用いた複層ガラスでは、用いられるスペーサの種類を問わず、複層ガラス製造後、シール材の硬化のために長時間の養生を要し、養生終了までは製品を出荷できない。したがって工場内に養生スペースを設け、ある一定の期間製品を保管した後に出荷しなければならず、納期が長期化し、客先の要望に必ずしも応えられなかった。また、将来的に増加する需要に対応するには、これまで以上の養生スペースを要するため、これを回避し充分な複層ガラスの供給量を確保するには、上記養生時間の短縮が必要と考えられている。
【0005】
一方、複層ガラスの低コスト化の点から、乾燥剤を練り混んだ樹脂からなる成形物をスペーサとして用い、二次シール材を用いずに複層ガラスを製造する方法が提案されている(例えば特公昭61−20501号公報)。しかし、このスペーサ用樹脂はスペーサとしては硬度が不足し、実際には上記樹脂からなるスペーサ単独では複層ガラスとしての形状の維持が困難であった。
【0006】
すなわち、複層ガラスを長寿命化するためにはスペーサの透湿度を低くする必要がある。そのためには、上記公告公報のようにブチルゴム系の材料を主たる樹脂として用いることが望ましい。しかし、単にブチルゴム系の材料を主たる樹脂材料に用いた場合には、充分にガラス板間を隔置できず、複層ガラスの形状維持性が低くなる。
【0007】
一方、ブチルゴム系の材料にフィラーを増量したり、硬質樹脂を添加すれば、樹脂製スペーサを高硬度化でき、複層ガラスの形状を維持できる。しかし、このように樹脂製スペーサを高硬度化した場合、ガラス板と接着剤との界面にかかる応力が増大し、ブチルゴムの粘着力だけでは、接着性が不充分な場合があった。
【0008】
【発明が解決しようとする課題】
ガラス板と樹脂材料との接着性を上げるためには、両者を接着できる接着剤をあらかじめガラス板に塗布しておき、そこに樹脂材料を接着することが考えられる。特開平7−17748号公報には、熱可塑性樹脂材料からなる樹脂製スペーサを用いた複層ガラスが開示されている。このスペーサは、ガラス板に塗布されたウレタン系やエポキシ系の接着剤を介して、ガラス板に接着されている。
【0009】
しかし、上記公開公報のようにガラス板と樹脂製スペーサとを接着剤で接着させて複層ガラスを構成すると、仮に樹脂製スペーサの透湿性を低く調整しても、接着剤部分から湿気が中空層へ透過してしまうおそれがある。
【0010】
上記公開公報には熱可塑性樹脂材料としてホットメルトブチルの使用が例示されている。基本的にブチル系の材料を用いることによって、スペーサの低透湿化の可能性がある。ブチルゴム系の材料に添加剤を追加することによる、スペーサに求められる形状保持性の実現可能性については、先述のとおりである。この場合、低透湿化のために用いたブチルゴム系材料による形状保持性の低下をカバーすべく追加した添加剤が招く、ガラス板との接着性の低下を防止するために、接着剤を用いるものである。
【0011】
しかし、これでは上記公開公報の複層ガラスと同様に、結果的に接着剤部分から湿気が透過してしまうので、ブチルゴム系材料を用いた意味がなくなる。
【0012】
【課題を解決するための手段】
本発明は、複数枚のガラス板がスペーサを介して対向配置され、前記ガラス板間に中空層が形成されてなる複層ガラスであって、前記スペーサとガラス板とは接着剤を介して接着されており、前記スペーサは、結晶性ポリオレフィンを加えたブチルゴム系材料を含む熱可塑性樹脂材料から形成されてなり、該接着剤の層の厚さがそれぞれ0.5mm以下であり、前記接着剤層は、前記中空層まで延在していることを特徴とする複層ガラスを提供する。
【0013】
【発明の実施の形態】
以下、図面に基づいて本発明をさらに詳細に説明する。図1は、本発明の複層ガラスの基本的構成の一例を示す要部概略断面図である。ガラス板11a、11bは、樹脂製スペーサ12によって所定間隔をあけて対向配置されており、両ガラス板11a、11b間に中空層15が形成されて、複層ガラス10が構成されている。
【0014】
複層ガラス10には、スペーサ12とガラス板11aとの間、スペーサ2とガラス板11bとの間に、それぞれ接着剤層14が形成されている。接着剤層14の厚さaは0.5mm以下である。
【0015】
スペーサ12は、樹脂材料から形成されたものであり、吸湿剤を樹脂材料に含有する。この吸湿剤としては、ゼオライトやシリカゲル等が使用でき、低湿度領域での吸湿性能が高いことからゼオライトが好ましい。
【0016】
このゼオライトの形状には特に制限はなく、スペーサ用の樹脂材料における均一分散性の観点から、パウダー状のものが好ましい。また、孔径は水蒸気を吸湿するものであれば特に制限はなく、安価に入手可能な4Aゼオライトパウダーが望ましい。従来の金属製スペーサを用いた複層ガラスでは、4Aゼオライトを乾燥剤に使用すると、空気層中の窒素ガスの吸収により複層ガラスが変形するおそれがあったが、スペーサ用樹脂材料に練り込んで使用する場合には、このような不具合が改善される。
【0017】
スペーサ用樹脂材料が有する吸湿性能は、温度、湿度等の環境条件により大きく左右されるため、規定が容易ではないが、少なくとも複層ガラスの使用温度領域である−20℃〜+60℃の温度範囲で、シール材料の重量に対し0.1%以上の吸湿性能を有することが望ましい。
【0018】
スペーサを形成する樹脂材料としては、複層ガラスの製造後の養生時間が短縮できる点に鑑みて、熱可塑性樹脂材料が好ましい。複層ガラスのスペーサとして充分な低透湿性が得られるように、ブチルゴム系材料を含む樹脂材料を用いることがより好ましい。さらに、複層ガラスのスペーサとして充分な形状保持性が得られるように、結晶性ポリオレフィン等の高硬度化に寄与する材料を加えることが好ましい。
【0019】
スペーサは、間隔をあけて保持した複数のガラス板間に、直接スペーサ形状で樹脂材料を押出して、複数枚のガラス板間に設けることが、複層ガラスの製造工程の自動化の点で好ましい。他に、1枚のガラス板に直接スペーサ形状で樹脂材料を押出した後に他のガラス板を押し付けて複数枚のガラス板間に設けることや、別途樹脂材料によりスペーサを成形し複数枚のガラス板間に配置することもできる。これらの方法は、複層ガラスの製造設備等に鑑みて、適宜決定される。
【0020】
スペーサとして低透湿性のものを用いても、接着剤層が厚いとこの接着剤層から水分が浸透する。すなわち、接着剤層の厚さが0.5mmを超えると、接着剤層の内部の水分透過を抑制できず、初期においても中空層の露点が降下しにくい。そこで、本発明では接着剤層の厚さを0.5mm以下としている。特に効果的に接着剤層の内部の水分透過を抑制できる点に鑑みて、接着剤層の厚さは0.1mm以下が好ましい。接着剤層の厚さの下限は、接着剤がかすれてガラス板とスペーサとの接着力が複層ガラスの性能として不充分にならない程度である。
【0021】
スペーサ自身にある程度のガラス板への粘着性や接着性があれば、この粘着性や接着性を補強する意味合いで、本発明における接着剤層は複層ガラスの全周のうちの一部に設けられるものでもよい。スペーサとガラス板との接着耐久性が充分に得られる点に鑑みて、複層ガラスの全周に接着剤層が設けられることが好ましい。この場合、複層ガラスにおける接着剤層を有するすべての辺において、接着剤層の厚みが0.5mm以下とすることが好ましい。一部でも0.5mmを超える接着剤層があると、そこからは水分が浸透しやすくなる。
【0022】
接着剤層の厚さは、その幅方向(例えば図1における左右方向)において多少の不均一性があってもよいが、均一な厚さを有することが好ましい。厚さが不均一であると、スペーサとガラス板との剥離の原因になりやすい。厚さが均一でない場合において、幅方向で一部に0.5mmを超える部分がある場合、その0.5mmを超えている部分がきわめて小さく、それ以外の部分が幅方向のほとんどの領域を占める場合、実質的に水分の透過を防止できていれば、その幅方向のほとんどの領域が0.5mm以下であることをもって、接着剤層の厚さが0.5mm以下であるとしてよい。
【0023】
スペーサとの界面において接着剤がスペーサの材料と混じりあうため、接着剤のみの場合の厚さよりもガラス板とスペーサとの間に介在した場合の方が、接着剤層の厚さは若干小さくなる。本発明において、この厚さの減少分程度の厚みの違いは誤差の範囲である。そこで、幅方向における不均一性についても、上記の減少分程度の不均一性は、実質的に均一な厚さみと考えてよい。
【0024】
本発明における接着剤は、吸湿性の材料を含む必要がなく、従来から種々提案されているガラス/樹脂用接着剤であれば特に限定されない。ウレタン系接着剤、ポリエステル系接着剤、エポキシ系接着剤、α−シアノアクリレート系接着剤、アクリル系接着剤等に加水分解性シリル基を有する化合物を含有せしめたもの等が例示される。
【0028】
1に示すように接着剤層が中空層まで延在し、接着剤層の一部が中空層に露出するように、スペーサの図示の左右方向の幅bに比べて接着剤層の幅cを大きくすることで、高い接着力が得られる。この場合、高い接着力だけでなく、スペーサの大きさ精度やガラス板間における介在位置精度に厳密性が要求されず、複層ガラスの生産性の向上が図れるので、より好ましい。そして、スペーサの大きさや位置精度の高い厳密性が要求されないことから、スペーサの幅bに比べて接着剤層の幅が大きいのは、必ずしも複層ガラスの全周ではなく、少なくとも一部でもよい。
【0029】
上記例では、ガラス板が2枚用いられた複層ガラスであるが、本発明の複層ガラスは、3枚以上のガラス板を用いるものでもよい。用いるガラス板も、通常の単板のガラス板に限られず、いわゆる樹脂ガラスと呼ばれる有機透明樹脂板、表面に機能コーティングが施されたガラス板、強化処理が施された強化ガラス等、種々のものを使用できる。これらのガラス板が複数枚、接着性中間膜を介して接合された合わせガラスや、表面に樹脂フィルムが積層された積層ガラス等も使用できる。
【0030】
【実施例】
以下、本発明の実施例を説明する。なお、以下にいう「幅」は例えば図1の左右方向の寸法に相当する。また、「厚み方向」は例えば図1の上下方向に相当し、「厚さ」は例えば図1の上下方向の寸法に相当する。
【0031】
(接着剤の例)
1,2−ポリブタジエンの水添物(末端OH基、水酸基価50.8mgKOH/g)50gを80℃に加熱し、撹拌しながらイソホロンジイソシアネート4.78gを静かに滴下し、2時間加熱・撹拌を行った後に、120℃で20時間加熱・撹拌を行った。これを冷却後、トルエンとメチルエチルケトンとを等重量混合した溶剤200gを加え、溶解して、固形分濃度約20wt%の溶液を得た。この溶液100部に、トリメチロールプロパン1分子とトリレンジイソシアネート3分子とのアダクト体の酢酸ブチル溶液(固形分濃度66wt%)を10部、γ- グリシドキシプロピルトリメトキシシランを1部加えて、接着剤Aを得た。この接着剤Aを平板上で風乾して得られたキャストフィルムの水蒸気透過係数は、1.1×10-7cc・cm/cm2 ・sec・cmHgであった。
【0032】
(スペーサ用樹脂材料の例)
表1に示す配合割合の材料を、ミキサーを用いて160℃で混練し、幅7mm(図1の幅方向(b)に相当)、高さ12mm、長さ5mの紐状サンプルBを押し出し成形機を用いて成形した。このサンプルBは、−20℃〜+60℃の温度範囲でその重量に対し0.1%以上の吸湿性能を示した。また、別途、0.1mm厚のフィルムを作成し、そのガス透過係数を測定したところ、5.0×10-1 0 cc・cm/cm2 ・sec・cmHgであった。
【0033】
【表1】

Figure 0003648908
【0034】
(例1)
350mm×500mm、厚さ5mmのフロートガラス2枚を温水洗浄し、その周縁部に10mm幅(図1の幅方向cに相当)、厚さ0.1mm(図1の厚み方向aに相当)になるように、接着剤Aを塗布、室温放置により乾燥させた。その後、紐状サンプルBを1枚のガラスの周辺部に配設し、さらにその上に、もう一枚のガラスをあわせ、1kgf/cm2 の圧力で5分間プレスし、図1に示すような複層ガラスAを得た。
【0035】
(例2〜4、6、7)
接着剤層幅および接着剤層厚さを表2に示すように変えた他は例1と同様にして、図1に示すような各複層ガラスB(例2)、C(例3)、D(例4)、F(例6)、G(例7)を得た。
【0036】
(例5)
350mm×500mm、厚さ5mmのフロートガラス2枚を温水洗浄し、その後、紐状サンプルBを1枚のガラスの周辺部に配設し、さらにその上に、もう一枚のガラスをあわせ、1kgf/cm2 の圧力で5分間プレスし、複層ガラスEを得た。
【0037】
(複層ガラス耐久評価)
例1〜4(実施例)、および例5〜7(比較例)に挙げた複層ガラスを作製し、室温にて2週間放置し、その後、JIS R3209に示される耐久評価を行った結果を表2に示す。表中、Wは「接着剤のない部分が一部剥離」、Xは「I類終了後露点上昇」、Yは「初期露点が低下せず、評価不能」、Zは「II類終了後露点上昇」を意味する。
【0038】
例1、2では、スペーサ−ガラス界面において、まったく剥離がみられなかった。例3、4では、接着剤が塗布されていないスペーサ−ガラス界面の一部において、一部剥離がみられ、実質的にスペーサのガラス板との接着幅の減少がみられたが、JISに規定される耐久評価結果は合格であった。
【0039】
また、60℃×95%RH環境における高温高湿耐久評価試験を行った結果を表2に示す。表は、中空層内の露点が−30℃以下を保っていた日数を示す。
【0040】
【表2】
Figure 0003648908
【0041】
【発明の効果】
本発明によれば、スペーサとガラス板とを接着する接着剤の層の厚みを0.5mm以下にして前記接着剤層を中空層まで延在させているので、接着剤層からの水分の透過を抑制でき、中空層が良好な乾燥状態に保たれた複層ガラスを得ることができる。
【0042】
この場合、用いたスペーサが樹脂製のスペーサである、複層ガラスの製造工程の簡略化が達成できる。特に、ブチルゴム系の樹脂材料を用いると低透湿性のスペーサが得られるが、この場合に生じる形状保持性の低下を補う材料の添加が招く、スペーサとガラス板との接着力の低下を、水分透過を許すことなく接着剤の介在によって、防止できる。
【図面の簡単な説明】
【図1】本発明の複層ガラスの基本的構成の一例を示す要部概略断面図
【図2】従来の複層ガラスの基本的構成を示す要部概略断面図 [0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multilayer glass.
[0002]
[Prior art]
As shown in FIG. 2 , the double-layer glass has a hollow layer formed by arranging at least two glass plates 1a and 1b opposite to each other through a metal spacer 2 having a desiccant (hygroscopic agent) inside. Thus, the glass plates 1a and 1b are spaced apart. In this case, by interposing the primary sealing material 3 made of butyl rubber or the like between the glass plates 1a and 1b and the spacer 2, the hollow layer is blocked from the outside air. And the room temperature hardening which consists of room temperature hardening type resin in which the space | gap (concave part) comprised by the peripheral part inner surface of the glass plates 1a and 1b which opposes, and the outer peripheral surface of the spacer 2 is represented by the polysulfide type or silicone type. Sealed with mold sealing material.
[0003]
The multi-layer glass manufacturing process as shown in FIG. 2 is provided with a primary sealing material when the glass plates 1a and 1b are separated by the spacer 2 as described above, and a room temperature curable sealing material which is a secondary sealing material. The process of sealing by was required. For this reason, it requires a lot of man-hours and complicated work. Therefore, simplification and automation of these manufacturing processes are being studied, and improvements in productivity such as making aluminum spacers bent and automating the application method of room-temperature-curing sealing materials have been studied and proposed. Yes.
[0004]
However, in the case of double-glazed glass using room-temperature curable sealing materials, long-term curing is required to cure the sealing material after manufacturing the double-glazed glass, regardless of the type of spacer used. Can't ship. Therefore, a curing space must be provided in the factory and the product must be stored after being stored for a certain period of time, resulting in a longer delivery time and not always meeting customer requirements. In addition, in order to respond to the increasing demand in the future, more curing space is required. Therefore, in order to avoid this and secure a sufficient supply of double-glazed glass, it is necessary to shorten the curing time. It is considered.
[0005]
On the other hand, from the viewpoint of cost reduction of the multilayer glass, a method of producing a multilayer glass without using a secondary sealant using a molded product made of a resin kneaded with a desiccant as a spacer has been proposed ( For example, Japanese Patent Publication No. 61-20501). However, the spacer resin has insufficient hardness as a spacer, and in fact, it has been difficult to maintain the shape as a double-glazed glass by using only the spacer made of the resin.
[0006]
That is, in order to extend the life of the multilayer glass, it is necessary to reduce the moisture permeability of the spacer. For this purpose, it is desirable to use a butyl rubber-based material as the main resin as described in the above publication. However, when a butyl rubber-based material is simply used as the main resin material, the glass plates cannot be sufficiently separated from each other, and the shape maintaining property of the multilayer glass is lowered.
[0007]
On the other hand, if the amount of filler is increased or a hard resin is added to the butyl rubber-based material, the resin spacer can be increased in hardness and the shape of the multilayer glass can be maintained. However, when the hardness of the resin spacer is increased in this way, the stress applied to the interface between the glass plate and the adhesive increases, and the adhesiveness may be insufficient only with the adhesive force of butyl rubber.
[0008]
[Problems to be solved by the invention]
In order to improve the adhesiveness between the glass plate and the resin material, it is conceivable to apply an adhesive capable of adhering both to the glass plate in advance and bond the resin material thereto. Japanese Patent Application Laid-Open No. 7-17748 discloses a multi-layer glass using a resin spacer made of a thermoplastic resin material. The spacer is bonded to the glass plate via a urethane or epoxy adhesive applied to the glass plate.
[0009]
However, when the glass plate and the resin spacer are bonded with an adhesive as in the above publication, the moisture is hollow from the adhesive portion even if the moisture permeability of the resin spacer is adjusted to be low. There is a risk of penetration into the layer.
[0010]
The above publication exemplifies the use of hot melt butyl as a thermoplastic resin material. By using a butyl-based material basically, there is a possibility of reducing the moisture permeability of the spacer. The feasibility of shape retention required for the spacer by adding an additive to the butyl rubber-based material is as described above. In this case, an adhesive is used to prevent a decrease in adhesion to the glass plate caused by an additive added to cover a decrease in shape retention due to the butyl rubber-based material used for reducing moisture permeability. Is.
[0011]
However, as in the case of the double glazing disclosed in the above-mentioned publication, moisture permeates from the adhesive portion as a result, so the meaning of using a butyl rubber-based material is lost.
[0012]
[Means for Solving the Problems]
The present invention is a multi-layer glass in which a plurality of glass plates are arranged to face each other via a spacer, and a hollow layer is formed between the glass plates, and the spacer and the glass plate are bonded via an adhesive. The spacers are made of a thermoplastic resin material containing a butyl rubber-based material added with crystalline polyolefin, and each of the adhesive layers has a thickness of 0.5 mm or less, and the adhesive layer Provides a double glazing characterized by extending to the hollow layer.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view of an essential part showing an example of a basic configuration of the multilayer glass of the present invention. The glass plates 11a and 11b are arranged to face each other with a predetermined interval by a resin spacer 12, and a hollow layer 15 is formed between the glass plates 11a and 11b to constitute the multilayer glass 10.
[0014]
In the multilayer glass 10, adhesive layers 14 are formed between the spacer 12 and the glass plate 11a and between the spacer 2 and the glass plate 11b, respectively. The thickness a of the adhesive layer 14 is 0.5 mm or less.
[0015]
The spacer 12 is formed from a resin material, and contains a hygroscopic agent in the resin material. As this hygroscopic agent, zeolite, silica gel or the like can be used, and zeolite is preferable because of its high hygroscopic performance in a low humidity region.
[0016]
There is no restriction | limiting in particular in the shape of this zeolite, From a viewpoint of the uniform dispersibility in the resin material for spacers, a powdery thing is preferable. The pore diameter is not particularly limited as long as it absorbs water vapor, and 4A zeolite powder that can be obtained at low cost is desirable. In conventional multi-layer glass using metal spacers, if 4A zeolite is used as the desiccant, the multi-layer glass may be deformed by absorption of nitrogen gas in the air layer, but it is kneaded into the spacer resin material. Such a problem is improved when used in the above.
[0017]
The moisture absorption performance of the resin material for spacers is greatly influenced by environmental conditions such as temperature and humidity, so it is not easy to define, but at least the temperature range of −20 ° C. to + 60 ° C., which is the operating temperature range of the double-glazed glass Therefore, it is desirable to have a moisture absorption performance of 0.1% or more with respect to the weight of the sealing material.
[0018]
As the resin material for forming the spacer, a thermoplastic resin material is preferable in view of shortening the curing time after the production of the multilayer glass. It is more preferable to use a resin material containing a butyl rubber-based material so that sufficient moisture permeability can be obtained as a spacer of the double-glazed glass. Furthermore, it is preferable to add a material that contributes to high hardness, such as crystalline polyolefin, so that sufficient shape-retaining properties can be obtained as a spacer of the double-glazed glass.
[0019]
It is preferable from the viewpoint of automation of the manufacturing process of the double-glazed glass that the spacer is provided between a plurality of glass plates by directly extruding a resin material in a spacer shape between a plurality of glass plates held at intervals. In addition, after extruding a resin material in the form of a spacer directly on one glass plate, the other glass plate is pressed and provided between a plurality of glass plates, or a plurality of glass plates are formed by separately forming a spacer with a resin material. It can also be placed in between. These methods are appropriately determined in view of the production equipment for the double-glazed glass.
[0020]
Even if a spacer having a low moisture permeability is used, if the adhesive layer is thick, moisture penetrates from the adhesive layer. That is, if the thickness of the adhesive layer exceeds 0.5 mm, moisture permeation inside the adhesive layer cannot be suppressed, and the dew point of the hollow layer is unlikely to drop even in the initial stage. Therefore, in the present invention, the thickness of the adhesive layer is set to 0.5 mm or less. In view of the fact that moisture permeation inside the adhesive layer can be particularly effectively suppressed, the thickness of the adhesive layer is preferably 0.1 mm or less. The lower limit of the thickness of the adhesive layer is such that the adhesive does not fade and the adhesive strength between the glass plate and the spacer does not become insufficient as the performance of the multilayer glass.
[0021]
If the spacer itself has some degree of tackiness and adhesion to the glass plate, the adhesive layer in the present invention is provided on a part of the entire circumference of the double-glazed glass in order to reinforce this tackiness and adhesion. It may be possible. In view of sufficient adhesion durability between the spacer and the glass plate, an adhesive layer is preferably provided on the entire circumference of the multilayer glass. In this case, the thickness of the adhesive layer is preferably 0.5 mm or less on all sides having the adhesive layer in the multilayer glass. If even a part of the adhesive layer exceeds 0.5 mm, moisture easily penetrates from there.
[0022]
The thickness of the adhesive layer may have some non-uniformity in the width direction (for example, the left-right direction in FIG. 1), but preferably has a uniform thickness. If the thickness is not uniform, the spacer and the glass plate are likely to be peeled off. When the thickness is not uniform and there is a part exceeding 0.5 mm in the width direction, the part exceeding 0.5 mm is very small, and the other part occupies most of the area in the width direction. In this case, if the moisture permeation can be substantially prevented, the thickness of the adhesive layer may be 0.5 mm or less because most of the region in the width direction is 0.5 mm or less.
[0023]
Since the adhesive mixes with the spacer material at the interface with the spacer, the thickness of the adhesive layer is slightly smaller when it is interposed between the glass plate and the spacer than the thickness of the adhesive alone. . In the present invention, the difference in thickness corresponding to the thickness reduction is an error range. Therefore, regarding the non-uniformity in the width direction, the non-uniformity of the above-described reduction amount may be considered as a substantially uniform thickness.
[0024]
The adhesive in the present invention is not particularly limited as long as it does not need to contain a hygroscopic material and is variously proposed adhesives for glass / resin. Examples include urethane adhesives, polyester adhesives, epoxy adhesives, α-cyanoacrylate adhesives, acrylic adhesives and the like containing a compound having a hydrolyzable silyl group.
[0028]
As shown in FIG. 1, the width c of the adhesive layer is larger than the width b of the spacer shown in the horizontal direction so that the adhesive layer extends to the hollow layer and a part of the adhesive layer is exposed to the hollow layer. size by Kusuru, Ru high have adhesive strength can be obtained. In this case, not only the high adhesive strength but also the precision of the size of the spacer and the accuracy of the interposition between the glass plates are not required, and the productivity of the multi-layer glass can be improved, which is more preferable. Then, since the high stringency of the spacer size and positional accuracy is not required, the width c of the adhesive layer than the width b of the spacer is large, not necessarily the entire periphery of the insulating glass, even at least a portion Good.
[0029]
In the above example, the glass is a double-glazed glass in which two glass plates are used. However, the double-glazed glass of the present invention may use three or more glass plates. The glass plate to be used is not limited to a normal single plate glass plate, but various types such as an organic transparent resin plate called a so-called resin glass, a glass plate with a functional coating on its surface, a tempered glass subjected to a tempering treatment, etc. Can be used. A laminated glass in which a plurality of these glass plates are bonded via an adhesive intermediate film, a laminated glass having a resin film laminated on the surface, or the like can also be used.
[0030]
【Example】
Examples of the present invention will be described below. The “width” described below corresponds to, for example, the horizontal dimension in FIG. Further, the “thickness direction” corresponds to, for example, the vertical direction in FIG. 1, and the “thickness” corresponds to, for example, the vertical dimension in FIG.
[0031]
(Example of adhesive)
50 g of hydrogenated 1,2-polybutadiene (terminal OH group, hydroxyl value 50.8 mg KOH / g) is heated to 80 ° C., and 4.78 g of isophorone diisocyanate is gently added dropwise with stirring, followed by heating and stirring for 2 hours. After performing, it heated and stirred at 120 degreeC for 20 hours. After cooling this, 200 g of a solvent in which equal weight of toluene and methyl ethyl ketone was mixed was added and dissolved to obtain a solution having a solid concentration of about 20 wt%. To 100 parts of this solution, add 10 parts of a butyl acetate solution (solid content 66 wt%) of an adduct of 1 molecule of trimethylolpropane and 3 molecules of tolylene diisocyanate and 1 part of γ-glycidoxypropyltrimethoxysilane. Adhesive A was obtained. The water vapor transmission coefficient of the cast film obtained by air-drying the adhesive A on a flat plate was 1.1 × 10 −7 cc · cm / cm 2 · sec · cmHg.
[0032]
(Example of spacer resin material)
The materials with the blending ratios shown in Table 1 are kneaded at 160 ° C. using a mixer, and a string-like sample B having a width of 7 mm (corresponding to the width direction (b) in FIG. 1), a height of 12 mm, and a length of 5 m is extruded. Molded using a machine. This sample B showed a moisture absorption performance of 0.1% or more with respect to its weight in the temperature range of -20 ° C to + 60 ° C. Separately, to create a 0.1mm thick film was measured for its gas permeability coefficient was 5.0 × 10 -1 0 cc · cm / cm 2 · sec · cmHg.
[0033]
[Table 1]
Figure 0003648908
[0034]
(Example 1)
Two pieces of float glass having a size of 350 mm × 500 mm and a thickness of 5 mm are washed with warm water, and the peripheral edge thereof has a width of 10 mm (corresponding to the width direction c in FIG. 1) and a thickness of 0.1 mm (corresponding to the thickness direction a in FIG. 1). Thus, the adhesive A was applied and dried by standing at room temperature. Thereafter, the string-like sample B is disposed on the periphery of one piece of glass, and another piece of glass is further combined thereon and pressed at a pressure of 1 kgf / cm 2 for 5 minutes, as shown in FIG. Multi-layer glass A was obtained.
[0035]
(Examples 2-4, 6, 7)
Each multilayer glass B (Example 2), C (Example 3), as shown in FIG. 1, except that the adhesive layer width and adhesive layer thickness were changed as shown in Table 2, in the same manner as in Example 1. D (Example 4), F (Example 6), and G (Example 7) were obtained.
[0036]
(Example 5)
Two pieces of float glass of 350 mm × 500 mm and thickness 5 mm are washed with warm water, and then a string-like sample B is disposed on the periphery of one piece of glass, and another piece of glass is combined therewith and 1 kgf Pressed at a pressure of / cm 2 for 5 minutes to obtain double-layer glass E.
[0037]
(Multilayer glass durability evaluation)
The multilayer glass mentioned in Examples 1 to 4 (Examples) and Examples 5 to 7 (Comparative Examples) was prepared, left at room temperature for 2 weeks, and then subjected to the durability evaluation shown in JIS R3209. It shows in Table 2. In the table, W is “parts without adhesive are partially peeled”, X is “increased dew point after completion of class I”, Y is “initial dew point does not decrease and cannot be evaluated”, and Z is “dew point after completion of class II” It means “rising”.
[0038]
In Examples 1 and 2, no peeling was observed at the spacer-glass interface. In Examples 3 and 4, a part of the spacer-glass interface where the adhesive was not applied was partially peeled off, and the adhesion width between the spacer and the glass plate was substantially reduced. The specified durability evaluation results were acceptable.
[0039]
Table 2 shows the results of a high temperature and high humidity durability evaluation test in a 60 ° C. × 95% RH environment. The table shows the number of days that the dew point in the hollow layer was kept at -30 ° C or lower.
[0040]
[Table 2]
Figure 0003648908
[0041]
【The invention's effect】
According to the present invention, since the thickness of the adhesive layer for bonding the scan spacers and the glass plate in the 0.5mm or less are extended the adhesive layer to the hollow layer, the moisture from the adhesive layer It is possible to obtain a multi-layer glass in which the permeation can be suppressed and the hollow layer is kept in a good dry state.
[0042]
In this case, the spacer used is a resin spacer, simplify the manufacturing process of the double glazing is cut with achieved. In particular, when a butyl rubber-based resin material is used, a low moisture permeability spacer can be obtained. However, the decrease in the adhesion between the spacer and the glass plate caused by the addition of a material that compensates for the decrease in shape retention that occurs in this case can be reduced by moisture. This can be prevented by interposing an adhesive without allowing permeation.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of an essential part showing an example of a basic configuration of a double-glazed glass of the present invention .

Claims (2)

複数枚のガラス板がスペーサを介して対向配置され、前記ガラス板間に中空層が形成されてなる複層ガラスであって、前記スペーサとガラス板とは接着剤を介して接着されており、前記スペーサは、結晶性ポリオレフィンを加えたブチルゴム系材料を含む熱可塑性樹脂材料から形成されてなり、該接着剤の層の厚さがそれぞれ0.5mm以下であり、前記接着剤層は、前記中空層まで延在していることを特徴とする複層ガラス。A plurality of glass plates are arranged opposite to each other via a spacer, and are a multi-layer glass in which a hollow layer is formed between the glass plates, and the spacer and the glass plate are bonded via an adhesive, The spacer is formed of a thermoplastic resin material including a butyl rubber-based material to which crystalline polyolefin is added , and each of the adhesive layers has a thickness of 0.5 mm or less, and the adhesive layer includes the hollow Multi-layer glass characterized in that it extends to a layer. 前記スペーサは、吸湿剤が添加された樹脂材料から形成されてなる請求項1記載の複層ガラス。  The multilayer glass according to claim 1, wherein the spacer is formed of a resin material to which a hygroscopic agent is added.
JP04265697A 1997-02-26 1997-02-26 Double glazing Expired - Fee Related JP3648908B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04265697A JP3648908B2 (en) 1997-02-26 1997-02-26 Double glazing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04265697A JP3648908B2 (en) 1997-02-26 1997-02-26 Double glazing

Publications (2)

Publication Number Publication Date
JPH10238235A JPH10238235A (en) 1998-09-08
JP3648908B2 true JP3648908B2 (en) 2005-05-18

Family

ID=12642061

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04265697A Expired - Fee Related JP3648908B2 (en) 1997-02-26 1997-02-26 Double glazing

Country Status (1)

Country Link
JP (1) JP3648908B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20071903A1 (en) * 2007-10-04 2009-04-05 Getters Spa METHOD FOR THE PRODUCTION OF SOLAR PANELS THROUGH THE USE OF A POLYMER TRISTRATE INCLUDING A COMPOSITE GETTER SYSTEM
JP7120223B2 (en) 2017-04-28 2022-08-17 Agc株式会社 Multi-layered glass manufacturing method and double-layered glass
JP7393602B2 (en) * 2018-10-31 2023-12-07 Agc株式会社 Double-glazed glass, its manufacturing method, and sealant for double-glazed glass

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5523022A (en) * 1978-08-04 1980-02-19 Asahi Glass Co Ltd Multilayer glass
JPS6232977Y2 (en) * 1981-03-18 1987-08-24
JPH0745545Y2 (en) * 1990-03-16 1995-10-18 ワイケイケイ株式会社 Double glass spacer
JPH04142383A (en) * 1990-10-03 1992-05-15 Ube Ind Ltd Adhesive composition
JP3137505B2 (en) * 1993-06-30 2001-02-26 東海興業株式会社 Double-glazed glass and method for producing the same

Also Published As

Publication number Publication date
JPH10238235A (en) 1998-09-08

Similar Documents

Publication Publication Date Title
US4807419A (en) Multiple pane unit having a flexible spacing and sealing assembly
JP3741461B2 (en) Method for producing thin film glass having outer peripheral band
US4951927A (en) Method of making an encapsulated multiple glazed unit
WO2001053423A1 (en) Moisture-curable one-pack-type urethane adhesive composition
JPH0373573B2 (en)
SE508620C2 (en) Glazing unit and methods for its manufacture
JPH0918047A (en) Manufacture of solar cell
JPS61209931A (en) Multilayer structural unit and assembling method
JP3648908B2 (en) Double glazing
JP2010003861A (en) Solar-cell module manufacturing method
US20040059069A1 (en) Reactive hotmelt adhesive composition for insulating glass
CN113234410A (en) Hollow glass based on single-component solvent-free hot melt adhesive and processing method thereof
JP5798112B2 (en) Laminated glass
JPH07100363B2 (en) Method of manufacturing laminated glass
JP2016194053A (en) Adhesive composition
JP2002201049A (en) Laminated glass
US7854814B2 (en) Method for forming a laminated window that can exhibit a variable level of adhesion
JP7120223B2 (en) Multi-layered glass manufacturing method and double-layered glass
JP5690328B2 (en) Adhesive bonding method and vehicle glass produced thereby
JPS6120501B2 (en)
JP4363616B2 (en) Double glazing
KR20150013856A (en) High modulus urethane adhesive compositions, manufacture and use thereof
CN211688890U (en) Anti-drop's membrane
US20130302543A1 (en) Insulated glass units including silanol-inclusive adhesives, and/or associated methods
CN113980218B (en) Moisture-curing polyurethane hot-melt adhesive and preparation method and application thereof

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040922

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20041005

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20041201

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050125

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050207

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080225

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090225

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100225

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100225

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110225

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120225

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120225

Year of fee payment: 7

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120225

Year of fee payment: 7

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120225

Year of fee payment: 7

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130225

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130225

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140225

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees