JP3335449B2 - Interlayer for laminated glass and laminated glass using the same - Google Patents
Interlayer for laminated glass and laminated glass using the sameInfo
- Publication number
- JP3335449B2 JP3335449B2 JP31497493A JP31497493A JP3335449B2 JP 3335449 B2 JP3335449 B2 JP 3335449B2 JP 31497493 A JP31497493 A JP 31497493A JP 31497493 A JP31497493 A JP 31497493A JP 3335449 B2 JP3335449 B2 JP 3335449B2
- Authority
- JP
- Japan
- Prior art keywords
- resin film
- laminated glass
- resin
- film
- glass
- 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 - Lifetime
Links
Landscapes
- Laminated Bodies (AREA)
- Joining Of Glass To Other Materials (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、遮音性の優れた合わ
せガラス用中間膜及びそれを用いた合わせガラスに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interlayer film for laminated glass having excellent sound insulation and a laminated glass using the same.
【0002】[0002]
【従来の技術】二枚のガラス板の間に、可塑化ポリビニ
ルブチラール樹脂等の透明で柔軟な樹脂からなる中間膜
を接着させた合わせガラスは、例えば、自動車や建築物
の窓ガラスに広く使用されている。2. Description of the Related Art A laminated glass in which an interlayer made of a transparent and flexible resin such as a plasticized polyvinyl butyral resin is bonded between two glass plates is widely used, for example, for window glasses of automobiles and buildings. I have.
【0003】この種の合わせガラスは、耐候性がよい、
耐貫通性がよい、ガラス破片が飛散しない、透明性がよ
い、光学歪みが生じない等の優れた諸性能を有するが、
遮音性が劣る。特に、2000Hz付近の中高音域にお
いてコインシデンス効果によって遮音性が低下する。[0003] This type of laminated glass has good weather resistance.
It has excellent properties such as good penetration resistance, no scattering of glass fragments, good transparency, and no optical distortion.
Poor sound insulation. In particular, the sound insulation is reduced due to the coincidence effect in the mid-high range around 2000 Hz.
【0004】コインシデンス効果とは、ガラスに音波が
入射したとき、ガラスの剛性と慣性によってガラス面上
を横波が伝導し、この横波と入射音とが共鳴し、音の透
過が起こる現象である。[0004] The coincidence effect is a phenomenon in which when a sound wave is incident on glass, a transverse wave is conducted on the glass surface due to the rigidity and inertia of the glass, and the transverse wave and the incident sound resonate, so that sound transmission occurs.
【0005】遮音性に対する要求は最近ますます高ま
り、特に、建築用窓ガラスには、上記のような諸性能の
ほか、優れた遮音性能を発揮するものが要求されてい
る。[0005] The demand for sound insulating properties has been increasing more and more recently. In particular, in addition to the above-mentioned performances, there is a demand for architectural windowpanes that exhibit excellent sound insulating properties.
【0006】遮音性合わせガラスとして、音響透過損失
の異なる2種の樹脂膜が2層又は3層に積層された中間
膜を用いた合わせガラスが提案されている(例えば、特
開昭62−37148号公報及び特開平2−22974
2号公報参照)。As a sound insulating laminated glass, a laminated glass using an intermediate film in which two or three resin films having different sound transmission losses are laminated in two or three layers has been proposed (for example, JP-A-62-37148). And JP-A-2-22974
No. 2).
【0007】[0007]
【発明が解決しようとする課題】ところが、この種の遮
音性合わせガラスの遮音性は、かなり改善されるものの
未だ充分ではない。しかも、積層される各樹脂膜の平均
膜厚にはかなりの差があり、合わせガラスとした時に、
この合わせガラスを通して向こう側の像がゆがんで見え
る所謂光学歪みが発生しやすいという問題がある。However, although the sound insulation of this kind of laminated sound insulating glass is considerably improved, it is still insufficient. Moreover, there is a considerable difference in the average film thickness of each resin film to be laminated.
There is a problem that a so-called optical distortion is likely to occur in which the image on the other side is distorted through the laminated glass.
【0008】この発明は、上記の問題を解決するもの
で、その目的とするところは、耐候性、耐貫通性、ガラ
ス破片の飛散防止性、透明性、光学歪みが生じない等の
合わせガラスに要求される基本性能を損なうことなく、
コインシデンス効果による遮音性の低下を防止し、優れ
た遮音性能を発揮する合わせガラス用中間膜及び合わせ
ガラスを提供することにある。[0008] The present invention solves the above-mentioned problems, and its object is to provide a laminated glass having weather resistance, penetration resistance, scattering prevention of glass fragments, transparency, and no optical distortion. Without impairing the required basic performance,
It is an object of the present invention to provide an interlayer film for laminated glass and a laminated glass exhibiting excellent sound insulation performance while preventing a decrease in sound insulation due to a coincidence effect.
【0009】[0009]
【課題を解決するための手段】上記の目的は、音響透過
損失(TL値)の異なる2種以上の樹脂膜が交互に4層
以上積層され、隣接する樹脂膜の膜厚比が全て0.9〜
1.1の範囲にある合わせガラス用中間膜及びそれを用
いた合わせガラスにより達成することができる。The object of the present invention is to form a structure in which two or more resin films having different sound transmission losses (TL values) are alternately laminated in four or more layers, and the thickness ratio of the adjacent resin films is all 0. 9 ~
It can be achieved by an interlayer film for a laminated glass in the range of 1.1 and a laminated glass using the same.
【0010】この発明に用いる樹脂膜としては、従来合
わせガラスに用いられている中間膜を使用することがで
きる。例えば、可塑化ポリビニルブチラール中間膜、塩
化ビニル系樹脂中間膜、エチレン−酢酸ビニル系樹脂中
間膜、ウレタン系樹脂中間膜等が挙げられる。これ等の
樹脂膜は、耐候性、耐貫通性、ガラス破片の飛散防止
性、透明性、光学歪みが生じない等の合わせガラスに要
求される基本性能が優れている。As the resin film used in the present invention, an intermediate film conventionally used for laminated glass can be used. For example, a plasticized polyvinyl butyral interlayer, a vinyl chloride-based resin interlayer, an ethylene-vinyl acetate-based resin interlayer, a urethane-based resin interlayer, and the like can be given. These resin films have excellent basic performance required for laminated glass, such as weather resistance, penetration resistance, scattering prevention of glass fragments, transparency, and no occurrence of optical distortion.
【0011】そして、この発明では、これ等の中間膜の
中から音響透過損失(TL値)の異なる2種以上の樹脂
膜を用いることが必要である。音響透過損失(TL値)
が同じ樹脂膜を用いると、樹脂膜界面での内部摩擦効果
による音エネルギーを熱エネルギーに変換吸収する作用
が小さく、遮音性が向上しない。この場合、隣接する樹
脂膜のTL値の差(ΔTL)は、全て5以上であるのが
好ましい。In the present invention, it is necessary to use two or more resin films having different sound transmission losses (TL values) from these intermediate films. Sound transmission loss (TL value)
However, when the same resin film is used, the effect of converting and absorbing sound energy due to the internal friction effect at the resin film interface into heat energy is small, and the sound insulation is not improved. In this case, the difference (ΔTL) between the TL values of the adjacent resin films is preferably 5 or more.
【0012】しかも、これ等の樹脂膜は交互に4層以上
積層されていることが必要である。ここで、交互に4層
以上積層されているとは、言い換えれば、互いに隣接す
る樹脂膜の音響透過損失(TL値)が異なるように4層
以上積層されていることを意味する。樹脂膜が1層のも
の或いは3層以下に積層されているもの或いは4層以上
であっても交互に積層されていないものは、樹脂膜界面
での内部摩擦効果が充分でなく、優れた遮音性が得られ
ない。Moreover, it is necessary that these resin films are alternately laminated in four or more layers. Here, the fact that four or more layers are alternately laminated means that four or more layers are laminated such that adjacent resin films have different sound transmission losses (TL values). If the resin film has one layer, three or less layers, or four or more layers that are not alternately laminated, the internal friction effect at the resin film interface is not sufficient, and the sound insulation is excellent. I can not get the nature.
【0013】さらに、隣接する樹脂膜の膜厚比が全て
0.9〜1.1の範囲にあることが必要である。ここ
で、樹脂膜の膜厚は平均膜厚みを意味する。隣接する樹
脂膜の膜厚比が一箇所でも0.9〜1.1の範囲外にな
ると、各樹脂膜を積層して一体化する際に、隣接する樹
脂膜の厚い方から薄い方へ樹脂が流れ込んでいき、その
界面が不均一となって、合わせガラスとした時に光学歪
み(像のゆがみ)が生じる。Further, it is necessary that the thickness ratios of the adjacent resin films are all in the range of 0.9 to 1.1. Here, the thickness of the resin film means an average film thickness. If the thickness ratio of the adjacent resin films is out of the range of 0.9 to 1.1 even in one place, when laminating and integrating each resin film, the resin is changed from the thicker to the thinner of the adjacent resin films. Flows in, and the interface becomes non-uniform, causing optical distortion (distortion of an image) when a laminated glass is formed.
【0014】なお、これ等の各樹脂膜の膜厚は特に限定
されないが、中間膜全体の膜厚は、通常の中間膜と同程
度の0.3〜1.6mmとするのが好ましい。中間膜の膜
厚が厚いほうが遮音性に優れるが、合わせガラスとして
必要な耐貫通性の点を考慮して厚みが決められ、実用上
は上記の厚み範囲が好適である。The thickness of each of these resin films is not particularly limited, but the thickness of the entire intermediate film is preferably 0.3 to 1.6 mm, which is almost the same as that of a normal intermediate film. The thicker the interlayer, the better the sound insulation. However, the thickness is determined in consideration of the penetration resistance required as a laminated glass, and the above thickness range is practically preferable.
【0015】この発明の合わせガラス用中間膜は、例え
ば、各樹脂膜をそれぞれ別々に成形し、これ等の各樹脂
膜を、二枚のガラス板の間に重ねて加熱加圧することに
より一体化して、合わせガラスの製造と同時に積層成形
する方法、或いは各樹脂膜を多層押出法により一体的に
積層成形する方法、或いは各樹脂膜を重ねて加熱加圧す
ることにより一体的に積層成形する方法等により製造す
ることができる。In the interlayer film for laminated glass of the present invention, for example, each resin film is separately formed, and each of these resin films is integrated by heating and pressing between two glass plates. Manufactured by laminating simultaneously with the production of laminated glass, or by laminating each resin film integrally by multilayer extrusion, or by laminating each resin film and applying heat and pressure. can do.
【0016】二枚ガラス板の間に、各樹脂膜或いは一体
化された中間膜を接着させて合わせガラスを製造するに
は、通常の合わせガラスの製法が採用される。In order to manufacture a laminated glass by adhering each resin film or an integrated intermediate film between two glass plates, a normal laminated glass manufacturing method is employed.
【0017】例えば、二枚の透明なガラス板の間に上記
各樹脂膜或いは中間膜を挟み、これをゴムバックに入れ
減圧吸引しながら約70〜110℃で予備接着し、次い
で、オートクレーブを用いるか或いはプレスを用い、約
120〜150℃で、約10〜15 kg/cm2の圧力で本
接着を行うことにより製造される。For example, each of the above resin films or intermediate films is sandwiched between two transparent glass plates, put in a rubber bag, and preliminarily bonded at about 70 to 110 ° C. while sucking under reduced pressure, and then using an autoclave or It is manufactured by performing main bonding using a press at about 120 to 150 ° C. and a pressure of about 10 to 15 kg / cm 2 .
【0018】なお、ガラス板としては、無機ガラス板の
みならず、ポリカーボネート板、ポリメチルメタクリレ
ート板等の有機ガラス板も使用することができる。As the glass plate, not only an inorganic glass plate but also an organic glass plate such as a polycarbonate plate and a polymethyl methacrylate plate can be used.
【0019】[0019]
【作用】音響透過損失(TL値)の異なる2種以上の樹
脂膜が交互に4層以上積層されると、粘弾性的挙動の異
なる多くの樹脂膜が隣接するすることになり、その樹脂
膜界面での内部摩擦効果によって音エネルギーが熱エネ
ルギーに効率よく変換吸収され、特に2000Hz付近
の中高温域におけるコインシデンス効果による遮音性の
低下が効果的に防止される。When two or more resin films having different sound transmission losses (TL values) are alternately laminated, four or more resin films having different viscoelastic behaviors are adjacent to each other. The sound energy is efficiently converted and absorbed into the heat energy by the internal friction effect at the interface, and the decrease in the sound insulation property due to the coincidence effect in the middle and high temperature region around 2000 Hz is particularly effectively prevented.
【0020】しかも、隣接する樹脂膜の膜厚比は全ては
0.9〜1.1の範囲に収まっていて同程度の膜厚であ
るので、各樹脂膜を積層して一体化する際に、隣接する
樹脂膜の厚い方から薄い方への樹脂の流れ込みが防止さ
れ、その界面が均一となって、合わせガラスとした時に
光学歪み(像のゆがみ)が防止される。In addition, the thickness ratios of the adjacent resin films are all within the range of 0.9 to 1.1 and are of the same thickness, so that when the resin films are laminated and integrated, In addition, the flow of resin from the thicker to the thinner of the adjacent resin films is prevented, the interface becomes uniform, and optical distortion (distortion of an image) is prevented when a laminated glass is formed.
【0021】[0021]
【実施例】以下、この発明の実施例及び比較例を示す。実施例1 各樹脂膜の調製 ポリビニルブチラール樹脂(PVB樹脂)(重合度17
00、残存酢酸基99モル%、ブチラール化度は66モ
ル%)100重量部と可塑剤としてトリエチレングリコ
ールジ−2−エチルブチレート40重量部とを混合し、
これをミキシングロールで充分に溶融混練した後、プレ
ス成形機でプレス成形して、平均厚さ0.20mmの樹脂
膜を得た。この樹脂膜を樹脂膜A(0.20mm)と呼
ぶ。EXAMPLES Examples and comparative examples of the present invention will be described below. Example 1 Preparation of Each Resin Film Polyvinyl butyral resin (PVB resin) (degree of polymerization: 17
00, 99 mol% of residual acetic acid groups, butyralization degree is 66 mol%), and 100 parts by weight of triethylene glycol di-2-ethylbutyrate as a plasticizer were mixed with 40 parts by weight.
This was sufficiently melt-kneaded with a mixing roll and then press-formed with a press-forming machine to obtain a resin film having an average thickness of 0.20 mm. This resin film is referred to as a resin film A (0.20 mm).
【0022】なお、この樹脂膜A(0.20mm)を透明
なフロートガラス(縦30cm×横30cm×厚さ3mm)で
挟み合わせガラスに加工し、その音響透過損失(TL
値)を後述の方法で測定したところ、その値は25dB
であった。The resin film A (0.20 mm) was processed into a transparent glass (30 cm long × 30 cm wide × 3 mm thick) into a laminated glass, and its sound transmission loss (TL) was measured.
Value) was measured by the method described later, and the value was 25 dB.
Met.
【0023】また、塩化ビニル系樹脂(PVC樹脂)
(塩化ビニル−エチレン−グリシジルメタクリレート共
重合体)100重量部と可塑剤としてジ−2−エチルヘ
キシルフタレート40重量部とを混合し、これをミキシ
ングロールで充分に溶融混練した後、プレス成形機でプ
レス成形して、平均厚さ0.19mmの樹脂膜を得た。こ
の樹脂膜を樹脂膜B(0.19mm)と呼ぶ。Also, vinyl chloride resin (PVC resin)
(Vinyl chloride-ethylene-glycidyl methacrylate copolymer) 100 parts by weight and 40 parts by weight of di-2-ethylhexyl phthalate as a plasticizer are mixed, sufficiently melt-kneaded with a mixing roll, and then pressed by a press molding machine. By molding, a resin film having an average thickness of 0.19 mm was obtained. This resin film is referred to as a resin film B (0.19 mm).
【0024】なお、この樹脂膜B(0.19mm)を透明
なフロートガラス(縦30cm×横30cm×厚さ3mm)で
挟み合わせガラスに加工し、音響透過損失(TL値)を
後述の方法で測定したところ、その値は31dBであっ
た。The resin film B (0.19 mm) is processed into a transparent glass (30 cm long × 30 cm wide × 3 mm thick) into a laminated glass, and the sound transmission loss (TL value) is measured by the method described later. As a result of measurement, the value was 31 dB.
【0025】合わせガラス用中間膜及び合わせガラスの
製造 上記の樹脂膜A(0.20mm)と樹脂膜B(0.19m
m)とを用い、これを樹脂膜A(0.20mm)/樹脂膜
B(0.19mm)/樹脂膜A(0.20mm)/樹脂膜B
(0.19mm)の順に4層(合計膜厚0.78mm)に重
ね合わせ、両側から透明なフロートガラス(縦30cm×
横30cm×厚さ3mm)で挟み、これをゴムバッグ内に入
れ20torrの真空度で20分間脱気した後、脱気し
たまま90℃のオーブンに移し、さらに90℃で30分
間保持しつつ真空プレスした。The interlayer film for laminated glass and the laminated glass
Manufacturing The above resin film A (0.20 mm) and resin film B (0.19 m
m) and resin film A (0.20 mm) / resin film B (0.19 mm) / resin film A (0.20 mm) / resin film B
(0.19 mm) in the order of 4 layers (total thickness 0.78 mm), and a transparent float glass (30 cm long x
(30 cm wide x 3 mm thick), put it in a rubber bag, deaerate it for 20 minutes at a vacuum of 20 torr, transfer it to an oven at 90 ° C while deaerated, and vacuum it while holding it at 90 ° C for 30 minutes. Pressed.
【0026】このようにして予備接着された合わせガラ
スを、エアー式オートクレーブで温度135℃、圧力1
2 kg/cm2の条件で20分間本接着を行い、合わせガラ
ス用中間膜と合わせガラスとの作製を同時に行った。The laminated glass preliminarily bonded in this manner is heated in an air-type autoclave at a temperature of 135 ° C. and a pressure of 1 ° C.
The main bonding was performed for 20 minutes under the condition of 2 kg / cm 2 , and the production of the interlayer film for laminated glass and the laminated glass was simultaneously performed.
【0027】この合わせガラスについて、遮音性及び光
学歪みを次の方法で評価した。その結果、合わせガラス
の音響透過損失(TL値)は37dBで優れた遮音性を
示し、また光学歪みもなく良好であった。The laminated glass was evaluated for sound insulation and optical distortion by the following methods. As a result, the sound transmission loss (TL value) of the laminated glass was 37 dB, showing excellent sound insulation properties, and was excellent without optical distortion.
【0028】<遮音性の評価>上記合わせガラスから試
料を切り出し、この試料を用いてダンピング試験用の振
動発生機(振研社製の加振機 「G21−005D」)
により加振し、そこから得られる振動特性を機械インピ
ーダンスアンプ(リオン社製「XG−81」)にて増幅
し、振動スペクトルをFFTアナライザー(横河ヒュー
レットパッカード社製「FFTスペクトラムアナライザ
ー HP 3582A」)により解析した。<Evaluation of Sound Insulation Property> A sample was cut out from the above laminated glass, and a vibration generator for a dumping test (a shaker “G21-005D” manufactured by Shinken Co., Ltd.) was used by using the sample.
And the vibration characteristics obtained therefrom are amplified by a mechanical impedance amplifier (“XG-81” manufactured by Rion) and the vibration spectrum is analyzed by an FFT analyzer (“FFT Spectrum Analyzer HP3582A” manufactured by Yokogawa Hewlett-Packard). Analyzed by
【0029】こうして得られた損失係数と、ガラスとの
共振周波数との比から、20℃における音周波数(H
z)と音響透過損失(dB)との関係を示すグラフを作
成し、音周波数2000Hz近辺における極小の音響透
過損失(TL値)を求めた。From the ratio of the thus obtained loss coefficient to the resonance frequency with glass, the sound frequency (H
A graph showing the relationship between z) and the sound transmission loss (dB) was created, and the minimum sound transmission loss (TL value) around a sound frequency of 2000 Hz was obtained.
【0030】<光学歪みの評価>上記合わせガラスを通
して前方の物体を透視し、物体の歪み具合を目視で評価
し、歪みが全く生じない場合を良好とし、それ以外を程
度によりやや良い、不良とした。<Evaluation of Optical Distortion> The object in front is seen through the above laminated glass, and the degree of distortion of the object is visually evaluated. If no distortion occurs, it is regarded as good. did.
【0031】実施例2 実施例1において、樹脂膜A(0.20mm)の平均膜厚
を0.13mmに変更して樹脂膜A(0.13mm)を調製
した。また、樹脂膜B(0.19mm)の平均膜厚を0.
13mmに変更して樹脂膜B(0.13mm)を調製した。
なお、樹脂膜A(0.13mm)のTL値は25dB、樹
脂膜B(0.13mm)のTL値は31dBであった。 Example 2 A resin film A (0.13 mm) was prepared in the same manner as in Example 1 except that the average thickness of the resin film A (0.20 mm) was changed to 0.13 mm. Further, the average thickness of the resin film B (0.19 mm) is set to 0.1.
The thickness was changed to 13 mm to prepare a resin film B (0.13 mm).
The TL value of the resin film A (0.13 mm) was 25 dB, and the TL value of the resin film B (0.13 mm) was 31 dB.
【0032】上記樹脂膜A(0.13mm)と樹脂膜B
(0.13mm)とを用い、これを樹脂膜A(0.13m
m)/樹脂膜B(0.13mm)/樹脂膜A(0.13m
m)/樹脂膜B(0.13mm)/樹脂膜A(0.13m
m)/樹脂膜B(0.13mm)の順に6層(合計膜厚
0.78mm)に重ね合わせ、それ以外は実施例1と同様
に行った。The resin film A (0.13 mm) and the resin film B
(0.13 mm) and the resin film A (0.13 m
m) / resin film B (0.13 mm) / resin film A (0.13 m
m) / resin film B (0.13 mm) / resin film A (0.13 m
m) / resin film B (0.13 mm) in the order of 6 layers (total film thickness of 0.78 mm).
【0033】その結果、合わせガラスの音響透過損失
(TL値)は39dBで優れた遮音性を示し、また光学
歪みもなく良好であった。As a result, the sound transmission loss (TL value) of the laminated glass was 39 dB, showing excellent sound insulation properties, and was excellent without optical distortion.
【0034】実施例3 実施例1において、樹脂膜B(0.19mm)の平均膜厚
を0.20mmに変更して樹脂膜B(0.20mm)を調製
した。なお、樹脂膜B(0.20mm)のTL値は31d
Bであった。 Example 3 A resin film B (0.20 mm) was prepared by changing the average thickness of the resin film B (0.19 mm) to 0.20 mm. The TL value of the resin film B (0.20 mm) is 31 d
B.
【0035】また、ポリウレタン樹脂(PU樹脂)
(4,4’−ジイソシアナトジシクロヘキシルメタンと
ポリテトラメチレングリコールとの共重合)100重量
部をミキシングロールで充分に溶融混練した後、プレス
成形機でプレス成形して、厚さ0.20mmの樹脂膜を得
た。この樹脂膜を樹脂膜C(0.20mm)と呼ぶ。な
お、樹脂膜C(0.20mm)のTL値は32dBであっ
た。Further, polyurethane resin (PU resin)
(Copolymerization of 4,4′-diisocyanatodicyclohexylmethane and polytetramethylene glycol) 100 parts by weight were sufficiently melt-kneaded with a mixing roll, and then press-formed with a press-forming machine to obtain a 0.20 mm-thick. A resin film was obtained. This resin film is referred to as a resin film C (0.20 mm). The TL value of the resin film C (0.20 mm) was 32 dB.
【0036】上記樹脂膜B(0.20mm)と樹脂膜C
(0.20mm)及び実施例1で調製した樹脂膜A(0.
20mm)を用い、これを樹脂膜A(0.20mm)/樹脂
膜C(0.20mm)/樹脂膜A(0.20mm)/樹脂膜
B(0.20mm)の順に4層(合計膜厚0.80mm)に
重ね合わせ、それ以外は実施例1と同様に行った。The resin film B (0.20 mm) and the resin film C
(0.20 mm) and the resin film A (0.
20 mm), and four layers (total film thickness) of resin film A (0.20 mm) / resin film C (0.20 mm) / resin film A (0.20 mm) / resin film B (0.20 mm) in this order. 0.80 mm), and the other steps were the same as in Example 1.
【0037】その結果、合わせガラスの音響透過損失
(TL値)は38dBで優れた遮音性を示し、また光学
歪みもなく良好であった。As a result, the sound transmission loss (TL value) of the laminated glass was 38 dB, showing excellent sound insulation properties, and was excellent without optical distortion.
【0038】比較例1 実施例1における樹脂膜A(0.20mm)の平均膜厚を
0.27mmに変更して樹脂膜A(0.27mm)を調製
し、樹脂膜B(0.19mm)の平均膜厚を0.27mmに
変更して樹脂膜B(0.27mm)を調製した。なお、樹
脂膜A(0.27mm)のTL値は25dB、樹脂膜B
(0.27mm)のTL値は31dBであった。 Comparative Example 1 Resin film A (0.27 mm) was prepared by changing the average film thickness of resin film A (0.20 mm) in Example 1 to 0.27 mm, and resin film B (0.19 mm) Was changed to 0.27 mm to prepare a resin film B (0.27 mm). The TL value of the resin film A (0.27 mm) is 25 dB,
(0.27 mm) had a TL value of 31 dB.
【0039】上記樹脂膜A(0.27mm)と樹脂膜B
(0.27mm)とを用い、これを樹脂膜A(0.27m
m)/樹脂膜B(0.27mm)/樹脂膜A(0.27m
m)の順に3層(合計膜厚0.81mm)に重ね合わせ、
それ以外は実施例1と同様に行った。The resin film A (0.27 mm) and the resin film B
(0.27 mm) and the resin film A (0.27 m
m) / resin film B (0.27 mm) / resin film A (0.27 m
m) in the order of 3 layers (total film thickness 0.81 mm)
Other than that, it carried out similarly to Example 1.
【0040】その結果、合わせガラスの音響透過損失
(TL値)は33dBで遮音性は不充分であった。な
お、光学歪みはなく良好であった。As a result, the sound transmission loss (TL value) of the laminated glass was 33 dB, and the sound insulation was insufficient. In addition, there was no optical distortion and it was good.
【0041】比較例2 実施例1における樹脂膜B(0.19mm)の平均膜厚を
0.24mmに変更して樹脂膜B(0.24mm)を調製し
た。なお、樹脂膜B(0.24mm)のTL値は31dB
であった。 Comparative Example 2 A resin film B (0.24 mm) was prepared by changing the average thickness of the resin film B (0.19 mm) in Example 1 to 0.24 mm. The TL value of the resin film B (0.24 mm) is 31 dB.
Met.
【0042】樹脂膜A(0.20mm)と上記樹脂膜B
(0.24mm)とを用い、これを樹脂膜A(0.20m
m)/樹脂膜B(0.24mm)/樹脂膜A(0.20m
m)/樹脂膜B(0.24mm)の順に4層(合計膜厚
0.88mm)に重ね合わせ、それ以外は実施例1と同様
に行った。The resin film A (0.20 mm) and the resin film B
(0.24 mm) and the resin film A (0.20 m
m) / resin film B (0.24 mm) / resin film A (0.20 m
m) / resin film B (0.24 mm) in the order of four layers (total film thickness of 0.88 mm).
【0043】その結果、合わせガラスの音響透過損失
(TL値)は37dBで優れた遮音性を示したが、光学
歪みが不良であった。As a result, the sound transmission loss (TL value) of the laminated glass was excellent at 37 dB, but the optical distortion was poor.
【0044】以上、実施例及び比較例の結果をまとめて
表1に示した。Table 1 summarizes the results of the examples and comparative examples.
【0045】[0045]
【表1】 [Table 1]
【0046】[0046]
【発明の効果】上述の通り、この発明の合わせガラスの
中間膜は、音響透過損失(TL値)の異なる2種以上の
樹脂膜が交互に4層以上と多層に積層されているので、
音エネルギーが熱エネルギーに効果的に変換吸収され、
広い温度領域においてコインシデンス効果による遮音性
の低下が防止され、優れた遮音性能を発揮する。As described above, the interlayer film of the laminated glass of the present invention is formed by alternately laminating two or more resin films having different sound transmission losses (TL values) into four or more layers.
Sound energy is effectively converted to heat energy and absorbed,
In a wide temperature range, a decrease in sound insulation due to a coincidence effect is prevented, and excellent sound insulation performance is exhibited.
【0047】しかも、隣接する樹脂膜の膜厚比が全て
0.9〜1.1の範囲にあるので、各樹脂膜を積層して
一体化する際に、隣接する樹脂膜の厚い方から薄い方へ
の樹脂の流れ込みが防止され、その界面が均一となっ
て、光学歪み(像のゆがみ)のない合わせガラスを得る
ことができる。Further, since the thickness ratios of the adjacent resin films are all in the range of 0.9 to 1.1, when the respective resin films are laminated and integrated, the thickness of the adjacent resin films is changed from the thicker to the thinner. Resin is prevented from flowing to the other side, the interface becomes uniform, and a laminated glass free of optical distortion (distortion of an image) can be obtained.
【0048】また、この発明の合わせガラスの中間膜
は、従来の中間膜と同様な樹脂膜で構成されるので、耐
候性、耐貫通性、ガラス破片の飛散防止性及び透明性に
優れている。Further, since the interlayer film of the laminated glass of the present invention is formed of the same resin film as the conventional interlayer film, it is excellent in weather resistance, penetration resistance, scattering prevention of glass fragments and transparency. .
【0049】したがって、この発明の合わせガラスの中
間膜及び合わせガラスは、特に、高い遮音性能が要求さ
れる建築物の窓ガラス等に好適に使用される。Therefore, the interlayer film and laminated glass of the laminated glass of the present invention are suitably used particularly for window glasses of buildings requiring high sound insulation performance.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B32B 7/00 B32B 17/10 B32B 27/08 C03C 27/12 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 7 , DB name) B32B 7/00 B32B 17/10 B32B 27/08 C03C 27/12
Claims (2)
上の樹脂膜が交互に4層以上積層され、隣接する樹脂膜
の膜厚比が全て0.9〜1.1の範囲にあることを特徴
とする合わせガラス用中間膜。1. Two or more resin films having different sound transmission losses (TL values) are alternately laminated in four or more layers, and the thickness ratios of adjacent resin films are all in the range of 0.9 to 1.1. An interlayer for laminated glass, characterized in that:
合わせガラス用中間膜が接着されていることを特徴とす
る合わせガラス。2. A laminated glass, wherein the interlayer film for laminated glass according to claim 1 is bonded between two glass plates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31497493A JP3335449B2 (en) | 1993-12-15 | 1993-12-15 | Interlayer for laminated glass and laminated glass using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP31497493A JP3335449B2 (en) | 1993-12-15 | 1993-12-15 | Interlayer for laminated glass and laminated glass using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07172879A JPH07172879A (en) | 1995-07-11 |
JP3335449B2 true JP3335449B2 (en) | 2002-10-15 |
Family
ID=18059914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP31497493A Expired - Lifetime JP3335449B2 (en) | 1993-12-15 | 1993-12-15 | Interlayer for laminated glass and laminated glass using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3335449B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102077936B1 (en) | 2018-08-16 | 2020-02-14 | 에스케이씨 주식회사 | Film for laminating glasses, composition for glass laminating film and laminated glass comprising the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE224300T2 (en) * | 1996-11-26 | 2002-10-15 | Saint Gobain | USE OF A COMPOSITE GLASS PANE FOR INSULATING VIBRATIONS CONDUCTED BY SOLID BODY IN A VEHICLE |
US7846532B2 (en) | 2005-03-17 | 2010-12-07 | Solutia Incorporated | Sound reducing wedge shaped polymer interlayers |
US7510771B2 (en) | 2005-03-17 | 2009-03-31 | Solutia Incorporated | Sound reducing polymer interlayers |
US7842395B2 (en) | 2006-11-01 | 2010-11-30 | Solutia Inc. | Multiple layer interlayers having a gradient region |
CN103781741A (en) | 2011-08-31 | 2014-05-07 | 积水化学工业株式会社 | Interlayer for laminated glass, method for producing interlayer for laminated glass, and laminated glass |
CN106163801B (en) * | 2014-03-31 | 2020-08-11 | 积水化学工业株式会社 | Thermoplastic resin film and laminated glass |
-
1993
- 1993-12-15 JP JP31497493A patent/JP3335449B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102077936B1 (en) | 2018-08-16 | 2020-02-14 | 에스케이씨 주식회사 | Film for laminating glasses, composition for glass laminating film and laminated glass comprising the same |
US11618243B2 (en) | 2018-08-16 | 2023-04-04 | Skc Co., Ltd. | Film for glass lamination, composition for film for glass lamination, and laminated glass comprising same |
Also Published As
Publication number | Publication date |
---|---|
JPH07172879A (en) | 1995-07-11 |
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