JP2004149355A - Sealed double-glazed unit - Google Patents

Sealed double-glazed unit Download PDF

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Publication number
JP2004149355A
JP2004149355A JP2002316535A JP2002316535A JP2004149355A JP 2004149355 A JP2004149355 A JP 2004149355A JP 2002316535 A JP2002316535 A JP 2002316535A JP 2002316535 A JP2002316535 A JP 2002316535A JP 2004149355 A JP2004149355 A JP 2004149355A
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Japan
Prior art keywords
glass
spacer
double
desiccant
vinyl acetate
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JP2002316535A
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Japanese (ja)
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JP4363616B2 (en
Inventor
Toru Hirotsu
透 弘津
Kiyoshi Nakase
喜好 中瀬
Akira Sakata
昭 坂田
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Central Glass Co Ltd
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Central Glass Co Ltd
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Publication date
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Priority to JP2002316535A priority Critical patent/JP4363616B2/en
Publication of JP2004149355A publication Critical patent/JP2004149355A/en
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  • Joining Of Glass To Other Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealed double-glazed unit capable of reducing cost, free of problem also in respect of energy saving, and having sufficiently high mechanical strength. <P>SOLUTION: In the sealed double-glazed unit in which two or more glass sheets are arranged by way of a spacer disposed at peripheral ends in such a way as to form a sealed hollow layer between the glass sheets, the spacer comprises a zeolite-containing EVA (ethylene-vinyl acetate copolymer) type desiccant kneaded resin having a vinyl acetate content of 5-45wt.% and the zeolite content of the desiccant kneaded resin is 10-30wt.%. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、断熱性能を有する複層ガラスで、住宅・非住宅などの建築分野、自動車・車両・船舶・航空機などの輸送分野、冷凍庫・冷凍ショーケース・恒温恒湿槽などの設備機器分野などの省エネルギーを要求される開口部に適用される。
【0002】
【0003】
【従来の技術】
最近、省エネルギーに優れ、快適で健康な住環境をつくるため、複層ガラスの使用頻度が高まり、急速に普及している。複層ガラスは、2枚のガラス板をスペーサーを用いて隔置し、ガラス板とスペーサーとで密閉空間を形成せしめた構成であり、高い断熱性能を有する。この複層ガラスとして、種々のものが提案されている。
【0004】
例えば、複層ガラス用スペーサーとして、図3に示すような、乾燥剤を充填した金属製の筒状中空体などが知られている(特許文献1)。金属製スペーサー8に用いられる金属としてはアルミニウムが代表的である。金属スペーサー8は、1次シール材10でガラス板に接着され、その外側には、主に複層ガラスの形状を保つために2次シーリング材9が用いられている。1次シーリング材10および2次シーリング材9としてポリサルファイド系、シリコーン系、ポリウレタン系およびブチルゴム系樹脂が用いられ、シーリング材により、金属スペーサー8とガラス板1とが、強固に接着一体化されている。
【0005】
この方式の複層ガラスは、金属スペーサーを用いているため、複層ガラスの中央部に比べ、複層ガラスの周辺部の断熱性能が低いという欠点がある。
【0006】
複層ガラスの周辺部の断熱性能を向上させるものとして、図2に示すような、ブチルゴムやポリイソブチレンまたは少なくともポリイソブチレンを一成分とする共重合体を樹脂主成分とする熱可塑性エラストマーに乾燥剤を含有させた樹脂スペーサー5と、可塑化ポリ塩化ビニル等の熱可塑性樹脂6とを用いた複層ガラスがある(特許文献2)。
【0007】
【特許文献1】
特開昭59−45149号公報
【特許文献2】
特開平9−77536号公報
【0008】
【発明が解決しようとする課題】
アルミニウムなどの金属スペーサーでは、乾燥剤の充填、コーナーキーの勘合等の製造工程が煩雑であり、曲面に曲げ加工されたガラスを対向配置させる複層ガラスの作製は困難である。また、乾燥剤を含有させたブチルゴムやポリイソブチレンは、耐透湿性が高いため、十分な初期露点性能(−35℃程度)を満足させることは困難である。
【0009】
本発明の複層ガラスは、このような従来技術による複層ガラスの欠点を克服するためになされたものである。
【0010】
【課題を解決するための手段】
本発明の複層ガラスは、2枚以上の板ガラスが周縁端部に配設されているスペーサーを介して隔置され、板ガラスの間に密封された中空層が形成されている複層ガラスにおいて、スペーサーが、酢酸ビニルの含有率を5〜45重量%とするゼオライトを含有させたEVA(エチレン酢酸ビニル共重合体)系の乾燥剤混練樹脂でなることを特徴とする複層ガラスである。
【0011】
また、前述の複層ガラスにおいて、乾燥剤混練樹脂のゼオライトの含有率が、10〜30重量%であることを特徴とする複層ガラスであり、さらにまた、スペーサーの外周部が、ホットメルトタイプあるいは反応型ホットメルトタイプのブチルゴム系シーリング材でシーリングされてなることを特徴とする複層ガラスである。
【0012】
【発明の実施の形態】
本発明による複層ガラスに用いる板ガラスとは、フロート法による板ガラス、熱線吸収板ガラス、板ガラスの表面に薄膜が形成されている熱線反射板ガラスなど、板状の板ガラスおよびそれらの加工品、また、樹脂をコートした板ガラスや樹脂フィルムを積層した板ガラス等を用いることができる。さらに、板ガラスの代わりに透明な板状の樹脂を用いてもよい。
【0013】
板ガラスは、スペーサーを用いて2枚以上を対向させて配置する。スペーサーは、酢酸ビニルの含有率およびゼオライトを含有させたEVA(エチレン酢酸ビニル共重合体)系の乾燥剤混練樹脂を用いる。
【0014】
酢酸ビニルの含有率は、5重量%未満では、スペーサーの吸湿性が低くなって初期露点性能を満たせなくなり、また、45重量%を越えると、複層ガラスの空隙部間隔の維持や成形に必要な硬度が不足するので、酢酸ビニルの含有率は5〜45重量%の範囲であることが好ましい。
【0015】
また、乾燥剤混練樹脂のゼオライトの含有率は、10重量%より少ない場合は、初期露点性能を満たすことが困難となり、40重量%を越えるとスペーサーとして必要な弾性性能が不十分となるため、10〜40重量%であることが好ましい。
【0016】
乾燥剤混練樹脂のスペーサーは、押し出し成形によって、複層ガラスを形成する2枚の板ガラスの1枚に、あるいは2枚の板ガラスを所定の間隔に隔置した状態で、板ガラスの面に成形することができる。また、押し出し成形、引き抜き成形あるいは型成形でスペーサーを製造し、板ガラスとスペーサーとを、両面が接着性を有するテープを用いて一体化してもよい。該テープには、耐透湿性に優れているブチル系の接着剤を用いることが好ましい。
【0017】
スペーサーと板ガラス周辺端部で形成されるコ字状の部分は、ホットメルトタイプあるいは反応型ホットメルトタイプのブチルゴム系シーリング材でシーリングされることが望ましい。該シーリングは、複層ガラスに形成されている中空層への透湿を防ぐばかりでなく、複層ガラスが強固に一体化されると共に、板ガラスの端部の保護に対して重要である。
【0018】
【実施例】
以下に、本発明の実施例を、図を参照して具体的に説明する。
【0019】
実施例1
図1は、本発明による複層ガラスの、周辺部の断面図である。
【0020】
EVAに、ゼオライトを20重量%、酢酸ビニルを26重量%混入し、幅12mm、厚み5mmの乾燥剤混練樹脂スペーサー3を押し出し成形した。この乾燥剤混練樹脂スペーサー3の厚み5mmの面に、1次シーリング材(ブチル系の接着テープ)2を貼り、該ブチル系テープで、板ガラス(350×500×3mmのフロートガラス)1の周辺部に、板ガラス1の端面から内側6mmの位置に、乾燥剤混練樹脂スペーサー3の面がくるように、乾燥剤混練樹脂スペーサー3を板ガラス1に固定した。
【0021】
次いで、乾燥剤混練樹脂スペーサー3のもう一つの厚み5mmの面に、1次シーリング材(ブチル系の接着テープ)2‘を貼り、もう1枚の板ガラス(350×500×3mmのフロートガラス)1’を重ねて、2枚の板ガラス1,1‘と乾燥剤混練樹脂スペーサー3とにより密閉空間12を形成した。さらに、板ガラス1,1’と乾燥剤混練樹脂スペーサー3とで形成される、板ガラス周辺部のコ字状の空間を、2次シーリング材(反応型ホットメルトタイプのブチル系シーリング材)4でシーリングし、複層ガラスとした。
【0022】
初期露点性能(製造1日後)をJIS R 3209に基づき確認したところ、−43℃であり、良好な初期露点性能であることを確認した。
【0023】
比較例1
ゼオライトを18重量%含有させた乾燥剤含有ブチル5を、実施例1の乾燥剤混練スペーサーと同様の寸法で、板ガラス(350×500×3mmのフロートガラス)1の外周部(板ガラス1の端面から6mm内側)に形成し、さらに、もう1枚の板ガラス(350×500×3mmのフロートガラス)1‘を重ねて、乾燥剤含有ブチル5と板ガラス1,1’との間に密閉空間12を形成した。さらに実施例1と同様にして、コ字状の空間に2次シーリング材6を充填した。
【0024】
実施例1と同様に初期露点性能を確認したところ、初期露点性能(製造1日後)は0℃以上であり、25日後の露点性能も−29℃で、−35℃の露点性能を満たさなかった。
【0025】
【発明の効果】
本発明の複層ガラスは、周辺部の断熱性が優れた複層ガラスを、従来よりも簡略化し製造できる。
【図面の簡単な説明】
【図1】本願発明による複層ガラスの周辺部の断面図。
【図2】乾燥剤を混練したシール材と2次シールからなる複層ガラスの周辺部断面図。
【図3】中空の金属スペーサーに乾燥剤を充填してなるスペーサーを用いて作製される複層ガラスの周辺部の断面図。
【符号の説明】
1、1‘ 板ガラス
2、2‘ 1次シール材
3 乾燥剤混練樹脂スペーサー
4 2次シール材
5 乾燥剤混練シール材
6 2次シール材
8 中空金属スペーサー
9 2次シール材
10 1次シール材
11 乾燥剤
12 密閉空間
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is a double-glazed glass having heat insulation performance, such as a construction field such as a house or non-house, a transportation field such as an automobile, a vehicle, a ship, and an aircraft, and an equipment field such as a freezer, a freezer showcase, and a constant temperature and humidity chamber. It is applied to openings where energy saving is required.
[0002]
[0003]
[Prior art]
Recently, in order to create a comfortable and healthy living environment with excellent energy savings, the use of double glazing has been increasing and has spread rapidly. The double glazing has a structure in which two glass plates are separated by using a spacer, and a closed space is formed by the glass plate and the spacer, and has high heat insulating performance. Various types of double glazing have been proposed.
[0004]
For example, as shown in FIG. 3, a metallic hollow cylindrical body filled with a desiccant as a spacer for a double-glazed glass is known (Patent Document 1). Aluminum is a typical metal used for the metal spacer 8. The metal spacer 8 is bonded to a glass plate with a primary sealing material 10, and a secondary sealing material 9 is used outside the metal spacer 8 in order to mainly maintain the shape of the multi-layer glass. Polysulfide-based, silicone-based, polyurethane-based, and butyl rubber-based resins are used as the primary sealing material 10 and the secondary sealing material 9, and the metal spacer 8 and the glass plate 1 are firmly bonded and integrated by the sealing material. .
[0005]
The double glazing of this type has a defect that the heat insulating performance of the peripheral portion of the double glazing is lower than that of the central portion of the double glazing because the metal spacer is used.
[0006]
As shown in FIG. 2, a desiccant is added to a thermoplastic elastomer containing butyl rubber, polyisobutylene or a copolymer containing at least polyisobutylene as a main component as shown in FIG. There is a double glazing using a resin spacer 5 containing a polymer and a thermoplastic resin 6 such as plasticized polyvinyl chloride (Patent Document 2).
[0007]
[Patent Document 1]
JP-A-59-45149 [Patent Document 2]
JP-A-9-77536
[Problems to be solved by the invention]
In the case of a metal spacer such as aluminum, manufacturing processes such as filling of a desiccant, fitting of a corner key, and the like are complicated, and it is difficult to manufacture a double-glazed glass in which glass that has been bent into a curved surface is arranged to face each other. Further, butyl rubber and polyisobutylene containing a desiccant have high moisture permeability, so that it is difficult to satisfy a sufficient initial dew point performance (about −35 ° C.).
[0009]
The double glazing of the present invention has been made in order to overcome such disadvantages of the conventional double glazing.
[0010]
[Means for Solving the Problems]
The double-glazed glass of the present invention is a double-glazed glass in which two or more plate glasses are separated via a spacer arranged at a peripheral edge portion, and a sealed hollow layer is formed between the plate glasses. The double-layer glass is characterized in that the spacer is made of an EVA (ethylene-vinyl acetate copolymer) -based desiccant kneading resin containing a zeolite having a vinyl acetate content of 5 to 45% by weight.
[0011]
Further, in the above-mentioned multilayer glass, the content of zeolite in the desiccant kneading resin is 10 to 30% by weight, and the outer periphery of the spacer is a hot melt type. Alternatively, it is a double-glazed glass characterized by being sealed with a reactive hot melt type butyl rubber-based sealing material.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
The glass sheet used for the double-glazed glass according to the present invention is a glass sheet by the float method, a heat ray absorbing glass sheet, a heat ray reflecting glass sheet having a thin film formed on the surface of the glass sheet, a glass sheet glass and a processed product thereof, and a resin. A coated plate glass, a plate glass laminated with a resin film, or the like can be used. Further, a transparent plate-like resin may be used instead of the plate glass.
[0013]
Two or more glass sheets are arranged to face each other using a spacer. As the spacer, an EVA (ethylene-vinyl acetate copolymer) -based desiccant kneading resin containing a vinyl acetate content and zeolite is used.
[0014]
If the content of vinyl acetate is less than 5% by weight, the hygroscopicity of the spacer becomes low and the initial dew point performance cannot be satisfied. If the content exceeds 45% by weight, it is necessary to maintain the gaps between the double glazings and to form the glass. Therefore, the content of vinyl acetate is preferably in the range of 5 to 45% by weight.
[0015]
If the zeolite content of the desiccant kneading resin is less than 10% by weight, it is difficult to satisfy the initial dew point performance, and if it exceeds 40% by weight, the elasticity required as a spacer becomes insufficient. It is preferably from 10 to 40% by weight.
[0016]
The spacer of the desiccant-kneaded resin is formed by extrusion on one of the two glass sheets forming the double-glazed glass or on the surface of the glass sheet with the two glass sheets spaced at a predetermined interval. Can be. Alternatively, the spacer may be manufactured by extrusion molding, drawing molding or molding, and the plate glass and the spacer may be integrated using a tape having adhesive properties on both surfaces. It is preferable to use a butyl-based adhesive having excellent moisture permeability for the tape.
[0017]
The U-shaped portion formed by the spacer and the peripheral edge of the plate glass is preferably sealed with a hot-melt type or reactive hot-melt type butyl rubber-based sealing material. The sealing is important not only for preventing moisture permeation to the hollow layer formed in the double-glazed glass, but also for firmly integrating the double-glazed glass and protecting the edges of the glass sheet.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
[0019]
Example 1
FIG. 1 is a cross-sectional view of a peripheral portion of a double glazing according to the present invention.
[0020]
20% by weight of zeolite and 26% by weight of vinyl acetate were mixed into EVA, and a desiccant-kneaded resin spacer 3 having a width of 12 mm and a thickness of 5 mm was extruded and formed. A primary sealing material (butyl-based adhesive tape) 2 is adhered to the 5 mm-thick surface of the desiccant-kneaded resin spacer 3, and a peripheral portion of a plate glass (350 × 500 × 3 mm float glass) 1 is attached with the butyl-based tape. Then, the desiccant-kneaded resin spacer 3 was fixed to the plate glass 1 such that the surface of the desiccant-kneaded resin spacer 3 was located at a position 6 mm inward from the end surface of the plate glass 1.
[0021]
Next, a primary sealing material (butyl-based adhesive tape) 2 ′ is adhered to another 5 mm thick surface of the desiccant-kneaded resin spacer 3, and another sheet glass (350 × 500 × 3 mm float glass) 1 And a sealed space 12 was formed by the two plate glasses 1 and 1 ′ and the desiccant-kneaded resin spacer 3. Further, a U-shaped space around the plate glass, which is formed by the plate glass 1, 1 'and the desiccant-kneaded resin spacer 3, is sealed with a secondary sealing material (reactive hot melt type butyl-based sealing material) 4. Then, a double-glazed glass was obtained.
[0022]
When the initial dew point performance (one day after production) was confirmed based on JIS R 3209, it was -43 ° C, and it was confirmed that the initial dew point performance was good.
[0023]
Comparative Example 1
The desiccant-containing butyl 5 containing 18% by weight of zeolite was measured in the same size as the desiccant kneading spacer of Example 1 and the outer peripheral portion of the plate glass (350 × 500 × 3 mm float glass) 1 (from the end face of the plate glass 1). 6 mm inside), and another sheet glass (350 × 500 × 3 mm float glass) 1 ′ is stacked thereon to form a closed space 12 between the desiccant-containing butyl 5 and the sheet glass 1, 1 ′. did. Further, in the same manner as in Example 1, the U-shaped space was filled with the secondary sealing material 6.
[0024]
When the initial dew point performance was confirmed in the same manner as in Example 1, the initial dew point performance (one day after production) was 0 ° C. or higher, and the dew point performance after 25 days was −29 ° C., which did not satisfy the dew point performance of −35 ° C. .
[0025]
【The invention's effect】
The double glazing of the present invention can be manufactured by simplifying the double glazing having excellent heat insulating properties in the peripheral portion as compared with the related art.
[Brief description of the drawings]
FIG. 1 is a sectional view of a peripheral portion of a double glazing according to the present invention.
FIG. 2 is a cross-sectional view of a peripheral portion of a double glazing comprising a sealing material kneaded with a desiccant and a secondary seal.
FIG. 3 is a cross-sectional view of the periphery of a double glazing produced using a spacer formed by filling a hollow metal spacer with a desiccant.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 1 'Plate glass 2, 2' Primary sealing material 3 Resin spacer kneading desiccant 4 Secondary sealing material 5 Sealing material kneading desiccant 6 Secondary sealing material 8 Hollow metal spacer 9 Secondary sealing material 10 Primary sealing material 11 Desiccant 12 Closed space

Claims (3)

2枚以上の板ガラスが周縁端部に配設されているスペーサーを介して隔置され、板ガラスの間に密封された中空層が形成されている複層ガラスにおいて、スペーサーが、酢酸ビニルの含有率を5〜45重量%とするゼオライトを含有させたEVA(エチレン酢酸ビニル共重合体)系の乾燥剤混練樹脂でなることを特徴とする複層ガラス。In a double glazing in which two or more glass sheets are separated by a spacer disposed at the peripheral edge and a sealed hollow layer is formed between the glass sheets, the spacer has a vinyl acetate content. A double-layer glass comprising a zeolite-containing EVA (ethylene-vinyl acetate copolymer) -based desiccant-kneading resin containing 5 to 45% by weight. 乾燥剤混練樹脂のゼオライトの含有率が、10〜40重量%であることを特徴とする請求項1に記載の複層ガラス。2. The double-glazed glass according to claim 1, wherein the content of the zeolite in the desiccant-kneaded resin is 10 to 40% by weight. 3. スペーサーの外周部が、ホットメルトタイプあるいは反応型ホットメルトタイプのブチルゴム系シーリング材でシーリングされてなることを特徴とする請求項1又は2に記載の複層ガラス。3. The double-glazed glass according to claim 1, wherein an outer peripheral portion of the spacer is sealed with a hot melt type or reactive hot melt type butyl rubber-based sealing material.
JP2002316535A 2002-10-30 2002-10-30 Double glazing Expired - Fee Related JP4363616B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002316535A JP4363616B2 (en) 2002-10-30 2002-10-30 Double glazing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002316535A JP4363616B2 (en) 2002-10-30 2002-10-30 Double glazing

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Publication Number Publication Date
JP2004149355A true JP2004149355A (en) 2004-05-27
JP4363616B2 JP4363616B2 (en) 2009-11-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009017803A (en) * 2007-07-10 2009-01-29 Shuichi Mikawa Aquarium
JP2010183920A (en) * 2010-06-03 2010-08-26 Shuichi Mikawa Aquarium
JP2011173937A (en) * 2010-02-23 2011-09-08 Bridgestone Corp Ethylene-vinyl acetate copolymer sheet, and solar cell and laminated glass using the same
US20180373072A1 (en) * 2016-08-29 2018-12-27 Boe Technology Group Co., Ltd. Sealant composition, sealant and manufacturing method thereof, and display panel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009017803A (en) * 2007-07-10 2009-01-29 Shuichi Mikawa Aquarium
JP4550868B2 (en) * 2007-07-10 2010-09-22 秋一 三川 Aquarium
JP2011173937A (en) * 2010-02-23 2011-09-08 Bridgestone Corp Ethylene-vinyl acetate copolymer sheet, and solar cell and laminated glass using the same
JP2010183920A (en) * 2010-06-03 2010-08-26 Shuichi Mikawa Aquarium
US20180373072A1 (en) * 2016-08-29 2018-12-27 Boe Technology Group Co., Ltd. Sealant composition, sealant and manufacturing method thereof, and display panel
US10571752B2 (en) * 2016-08-29 2020-02-25 Boe Technology Group Co., Ltd. Sealant composition, sealant and manufacturing method thereof, and display panel

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