JPH08338902A - Light-controlling laminated body - Google Patents
Light-controlling laminated bodyInfo
- Publication number
- JPH08338902A JPH08338902A JP7144999A JP14499995A JPH08338902A JP H08338902 A JPH08338902 A JP H08338902A JP 7144999 A JP7144999 A JP 7144999A JP 14499995 A JP14499995 A JP 14499995A JP H08338902 A JPH08338902 A JP H08338902A
- Authority
- JP
- Japan
- Prior art keywords
- film
- light control
- light
- adhesive
- barrier material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は光制御積層体に関する。FIELD OF THE INVENTION The present invention relates to a light control laminate.
【０００２】[0002]
【従来の技術】フィルムに対し所定の角度範囲内にある
入射光のみを選択的に散乱し、それ以外の角度の入射光
は透過する光制御フィルムについて、その製造法は特開
昭６３−３０９９０２などに、その「建物窓」としての
応用は実開平１−１４１３６に、「高所の側壁」として
の応用は実開平１−１１２２９などに示されている。2. Description of the Related Art A light control film which selectively scatters only incident light within a predetermined angle range with respect to a film and transmits incident light at other angles is disclosed in JP-A-63-309902. The application as a "building window" is shown in Japanese Utility Model Application No. 1-114136, and the application as a "high side wall" is shown in Japanese Utility Model Application No. 1-112929.
【０００３】光制御フィルムを２枚のガラス板に挟んで
なる合わせガラスは、建築物の窓ガラス、高所の側壁、
間仕切り、自動車のフロントガラスやサイドガラスおよ
びリヤガラス、防音ガラス、道路の側壁、中央分離帯な
どに応用できる。しかし、前述の光制御フィルムは紫外
線が当たると短時間に著しく変色するなどの劣化が発生
するという問題があり、光制御フィルムを単に板ガラス
で挟むように積層してなる合わせガラスも同様に変色な
どの劣化が発生するという問題があった。Laminated glass made by sandwiching a light control film between two glass plates is used for building window glass, side walls at high places,
It can be applied to partitions, windshields, side and rear windows of automobiles, soundproof glass, side walls of roads, median strips, etc. However, the above-mentioned light control film has a problem that when it is exposed to ultraviolet rays, deterioration such as significant color change occurs in a short time, and the laminated glass formed by simply sandwiching the light control film between plate glasses also changes color. However, there is a problem that the deterioration occurs.
【０００４】[0004]
【発明が解決しようとする課題】光制御フィルムに紫外
線が当たると短時間に著しく変色するなどの劣化が発生
するが、この理由は、光制御フィルムに含まれる樹脂組
成物を構成する原子の一部が紫外線などのエネルギによ
り解離し、解離した原子が分子化したものが、その原因
の一つであると考えられる。When the light control film is exposed to ultraviolet rays, deterioration such as remarkable discoloration occurs in a short time. This is because one of the atoms constituting the resin composition contained in the light control film. It is considered that one of the causes is that the parts are dissociated by energy such as ultraviolet rays and the dissociated atoms are molecularized.
【０００５】そこで、図３に比較例１として示した、透
明板状体１ａ、接着膜２ａ、光制御フィルム４、接着膜
２ｂ、透明板状体１ｂが順次積層してなる光制御積層体
であって接着膜２ａおよび接着膜２ｂに紫外線吸収剤を
含有させることにより紫外線を大部分遮蔽するようにし
た光制御積層体を作製し試験したが、かかる光制御積層
体を用いても光制御フィルム４の劣化を防止できない。Therefore, in the light control laminated body shown in FIG. 3 as Comparative Example 1, the transparent plate 1a, the adhesive film 2a, the light control film 4, the adhesive film 2b and the transparent plate 1b are sequentially laminated. Therefore, a light control laminate in which most of the ultraviolet rays are blocked by including an ultraviolet absorber in the adhesive films 2a and 2b was produced and tested. 4 cannot be prevented.
【０００６】なぜなら、接着膜または紫外線吸収剤を含
有する接着膜としては熱硬化性樹脂などがあり、この熱
硬化性樹脂は架橋剤として過酸化物を含有するため、こ
の過酸化物が紫外線などのエネルギにより容易にラジカ
ル化合物になり、接触している光制御フィルムに侵入し
光制御フィルムに含まれる樹脂組成物を構成する原子の
解離を促進させるものと考えられる。There is a thermosetting resin or the like as an adhesive film or an adhesive film containing an ultraviolet absorber, and since this thermosetting resin contains a peroxide as a cross-linking agent, the peroxide is an ultraviolet ray or the like. It is considered that the energy of (3) easily forms a radical compound, penetrates into the light control film in contact, and promotes dissociation of atoms constituting the resin composition contained in the light control film.
【０００７】本発明は、これらの問題を解決した、光劣
化しくい光制御フィルムを用いた光制御積層体の提供を
目的とする。An object of the present invention is to provide a light control laminated body using a light control film which is free from photodegradation and which solves these problems.
【０００８】[0008]
【課題を解決するための手段】本発明は、図１に示すよ
うに、透明板状体１ａ、接着膜２ａ、バリア材３ａ、光
制御フィルム４、バリア材３ｂ、接着膜２ｂ、透明板状
体１ｂを順次積層してなる光制御積層体であって、接着
膜２ａおよび接着膜２ｂが紫外線を遮蔽する機能を有
し、光制御フィルム４が光制御フィルム４のフィルム面
に対し所定の角度範囲内にある入射光のみを選択的に散
乱し、それ以外の角度の入射光は透過する特性を有する
ことを特徴とする光制御積層体を提供する。According to the present invention, as shown in FIG. 1, a transparent plate 1a, an adhesive film 2a, a barrier material 3a, a light control film 4, a barrier material 3b, an adhesive film 2b, and a transparent plate. A light control laminated body obtained by sequentially laminating a body 1b, wherein the adhesive film 2a and the adhesive film 2b have a function of blocking ultraviolet rays, and the light control film 4 has a predetermined angle with respect to the film surface of the light control film 4. Provided is a light control laminate, which has a property of selectively scattering only incident light within a range and transmitting incident light of other angles.
【０００９】光制御フィルム４としては、光制御フィル
ム４のフィルム面の視界制御基軸方向に対して所定の角
度範囲内にある入射光のみを選択的に散乱し、その所定
角度範囲外の入射光は透過する特性を有するものが好ま
しい。The light control film 4 selectively scatters only incident light within a predetermined angle range with respect to the direction of the field-of-view control axis on the film surface of the light control film 4, and makes incident light outside the predetermined angle range. Is preferably one having a property of transmitting light.
【００１０】バリア材３ａおよびバリア材３ｂは、後述
するように架橋剤がラジカル化して移動するのを防止す
るものであるから、それ自身としても架橋剤を含まない
ことが好ましい。Since the barrier material 3a and the barrier material 3b prevent the crosslinking agent from radicalizing and moving as described later, it is preferable that the barrier material 3a and the barrier material 3b themselves do not contain the crosslinking agent.
【００１１】また、接着膜２ａおよび接着膜２ｂは、エ
チレン−酢酸ビニル共重合体と架橋剤を含む接着性樹脂
の硬化物であることが好ましい。主成分であるエチレン
−酢酸ビニル共重合体は単体では熱可塑性樹脂である
が、この熱可塑性樹脂に架橋剤を添加することにより熱
硬化性が付与される。この接着膜２ａおよび接着膜２ｂ
は、エチレン−酢酸ビニル共重合体に炭化水素樹脂と有
機過酸化物を配合して得られる熱硬化性樹脂が硬化した
ものであることがより好ましい。The adhesive films 2a and 2b are preferably cured products of an adhesive resin containing an ethylene-vinyl acetate copolymer and a crosslinking agent. The ethylene-vinyl acetate copolymer, which is the main component, is a thermoplastic resin as a simple substance, but the thermosetting property is imparted by adding a crosslinking agent to this thermoplastic resin. The adhesive film 2a and the adhesive film 2b
Is more preferably a thermosetting resin obtained by blending an ethylene-vinyl acetate copolymer with a hydrocarbon resin and an organic peroxide.
【００１２】接着膜２ａおよび接着膜２ｂが紫外線を遮
蔽する機能をもたせるには、接着膜２ａおよび接着膜２
ｂに紫外線吸収剤を含有させる方法などがある。In order for the adhesive film 2a and the adhesive film 2b to have a function of blocking ultraviolet rays, the adhesive film 2a and the adhesive film 2 are required.
There is a method of incorporating an ultraviolet absorber in b.
【００１３】紫外線などのエネルギにより容易にラジカ
ル化合物が生成するのを回避するために、バリア材３ａ
およびバリア材３ｂ中には架橋剤を含まないことが好ま
しい。架橋剤の典型例は過酸化物である。バリア材３ａ
および３ｂと光制御フィルム４の接着については粘着剤
を用いるなどの方法があるが、かかる粘着剤について
も、架橋剤、特に過酸化物を含まないことが好ましい。In order to prevent radical compounds from being easily generated by energy such as ultraviolet rays, the barrier material 3a is used.
It is preferable that the barrier material 3b does not contain a crosslinking agent. A typical example of a crosslinking agent is a peroxide. Barrier material 3a
There is a method such as using a pressure-sensitive adhesive for adhering 3 and 3b to the light control film 4, but it is preferable that the pressure-sensitive adhesive also does not contain a crosslinking agent, particularly a peroxide.
【００１４】また、本発明は、図２に示すように、透明
板状体１１ａ、接着膜１２ａ、バリア材３ａ、光制御フ
ィルム４、バリア材３ｂ、接着膜１２ｂ、透明板状体１
１ｂを順次積層してなる光制御積層体であって、透明板
状体１１ａおよび透明板状体１１ｂが紫外線を遮蔽する
機能を有し、光制御フィルム４がフィルムに対し所定の
角度範囲内にある入射光のみを選択的に散乱し、それ以
外の角度の入射光は透過する特性を有することを特徴と
する光制御積層体をも提供する。Further, according to the present invention, as shown in FIG. 2, the transparent plate 11a, the adhesive film 12a, the barrier material 3a, the light control film 4, the barrier material 3b, the adhesive film 12b, and the transparent plate 1 are provided.
1b is a light control laminated body sequentially laminated, the transparent plate-shaped body 11a and the transparent plate-shaped body 11b have a function of blocking ultraviolet rays, the light control film 4 within a predetermined angle range with respect to the film. There is also provided a light control laminated body characterized in that only certain incident light is selectively scattered and incident light at other angles is transmitted.
【００１５】ここにおいても、接着膜１２ａおよび接着
膜１２ｂが、エチレン−酢酸ビニル共重合体と架橋剤を
含む接着性樹脂の硬化物であることが好ましい。Also in this case, it is preferable that the adhesive films 12a and 12b are cured products of an adhesive resin containing an ethylene-vinyl acetate copolymer and a crosslinking agent.
【００１６】光制御フィルム４としては、互いに屈折率
に差があるオリゴマーとモノマーからなる樹脂組成物を
硬化させて成形されたもの、互いに屈折率に差があるモ
ノマーと他のモノマーからなる樹脂組成物を硬化させて
成形されたもの、互いに屈折率に差がある光重合性オリ
ゴマーと光重合性モノマーからなる樹脂組成物に紫外線
を照射して硬化させて成形されたもの、または、互いに
屈折率に差がある光重合性モノマーと他の光重合性モノ
マーからなる樹脂組成物に紫外線を照射して硬化させて
成形されたものを使用できる。The light control film 4 is formed by curing a resin composition composed of an oligomer and a monomer having different refractive indexes from each other, and a resin composition composed of a monomer having a different refractive index and another monomer. Molded by curing a material, molded by curing a resin composition composed of a photopolymerizable oligomer and a photopolymerizable monomer having a difference in refractive index by irradiating ultraviolet rays, or a refractive index with each other. It is possible to use a resin composition composed of a photopolymerizable monomer having a difference in the above and another photopolymerizable monomer, which is molded by curing the resin composition by irradiating it with ultraviolet rays.
【００１７】バリア材３ａおよびバリア材３ｂとして
は、ポリエステル、ポリエチレン、ポリ塩化ビニルまた
はポリプロピレンからなる透明フィルムなどを使用でき
る。透明板状体１ａ、１ｂ、１１ａ、１１ｂとしては、
ガラス板やプラスチック板などを使用でき、一般的に
は、耐摩耗性の観点からガラス板を用いるのが好まし
く、ガラス板を透明板状体として用いた場合には、本発
明の光制御積層体は、いわゆる、合わせガラスとなる。As the barrier material 3a and the barrier material 3b, a transparent film made of polyester, polyethylene, polyvinyl chloride or polypropylene can be used. As the transparent plate-shaped bodies 1a, 1b, 11a, 11b,
A glass plate or a plastic plate can be used, and in general, it is preferable to use a glass plate from the viewpoint of abrasion resistance. When the glass plate is used as a transparent plate-shaped body, the light control laminate of the present invention is used. Is a so-called laminated glass.
【００１８】[0018]
【作用】一般的に、接着膜２ａ、２ｂ、１２ａおよび１
２ｂとして用いられる合成樹脂には、過酸化物などの架
橋剤が含有されている。その場合に、もし、接着膜２ａ
および接着膜２ｂと光制御フィルム４との間、あるい
は、接着膜１２ａおよび接着膜１２ｂと光制御フィルム
４との間に、バリア材３ａおよび３ｂが存在しなけれ
ば、接着膜２ａ、２ｂ、１２ａおよび１２ｂ中に存在す
る過酸化物などの架橋剤が紫外線などのエネルギにより
容易にラジカル化合物になり、光制御フィルム４に侵入
し光制御フィルム４に含まれる樹脂組成物を構成する原
子の解離を促進させるものと考えられる。In general, the adhesive films 2a, 2b, 12a and 1
The synthetic resin used as 2b contains a crosslinking agent such as a peroxide. In that case, if the adhesive film 2a
If the barrier materials 3a and 3b do not exist between the adhesive film 2b and the light control film 4 or between the adhesive film 12a and the adhesive film 12b and the light control film 4, the adhesive films 2a, 2b and 12a. And a cross-linking agent such as peroxide present in 12b is easily converted into a radical compound by energy such as ultraviolet rays and penetrates into the light control film 4 to dissociate atoms constituting the resin composition contained in the light control film 4. It is thought to promote.
【００１９】そこで、バリア材３ａおよび３ｂは、紫外
線によりラジカル化した架橋剤が光制御フィルム４への
侵入を防ぐ働きをする。すなわち、ラジカル化した架橋
剤が光制御フィルム４を構成する主鎖または側鎖に結合
されている原子の解離の促進を防ぐ。Therefore, the barrier materials 3a and 3b function to prevent the crosslinking agent radicalized by ultraviolet rays from entering the light control film 4. That is, the radicalized crosslinking agent prevents the promotion of dissociation of atoms bonded to the main chain or the side chains forming the light control film 4.
【００２０】[0020]
（実施例１）図１に完成品の断面図を示してあるが、ま
ず、ポリエーテルウレタンアクリレートにトリブロモフ
ェノキシエチルアクリレートと２−ヒドロキシ−２−メ
チル−プロピオフェノンを添加混合して得られた２００
μｍ厚の高分子膜（光制御フィルム）４の片面に透明板
状体に成形された５０μｍ厚のポリエステルフィルム
（バリア材）３ａが接着されたものを準備する。このよ
うな、既に高分子膜（光制御フィルム）４の片面にポリ
エステルフィルム（バリア材）３ａが接着されたものが
準備できない場合には、架橋剤を含んでいないアクリル
系粘着剤を用いて両者を接着して準備する。(Example 1) FIG. 1 is a sectional view of a finished product. First, it was obtained by adding and mixing tribromophenoxyethyl acrylate and 2-hydroxy-2-methyl-propiophenone to polyether urethane acrylate. Was 200
A 50 μm-thick polyester film (barrier material) 3a molded into a transparent plate is adhered to one side of a μm-thick polymer film (light control film) 4. When it is not possible to prepare such a film in which the polyester film (barrier material) 3a is already adhered to one side of the polymer film (light control film) 4, it is possible to use an acrylic pressure-sensitive adhesive containing no crosslinking agent. Glue and prepare.
【００２１】次に、高分子膜（光制御フィルム）４のポ
リエステルフィルム（バリア材）３ａが接着されている
面の反対面に、アクリル系粘着剤により、５０μｍ厚の
ポリエステルフィルム（バリア材）３ａを接着する。Next, on the surface of the polymer film (light control film) 4 opposite to the surface to which the polyester film (barrier material) 3a is bonded, a polyester film (barrier material) 3a having a thickness of 50 μm is formed by an acrylic adhesive. Glue.
【００２２】得られた総厚約３００μｍの膜状体の１枚
を、紫外線吸収剤とラジカル架橋剤を含有する厚さ０．
４ｍｍのエチレン−酢酸ビニル共重合体２枚（接着膜）
２ａ、２ｂを用いて、厚さ３ｍｍの透明ガラス板２枚
（透明板状体）１ａ、１ｂの間に介挿させ合わせガラス
（光制御積層体）を作製した。かくして、透明板状体１
ａ、接着膜２ａ、バリア材３ａ、光制御フィルム４、バ
リア材３ｂ、接着膜２ｂ、透明板状体１ｂが順次積層し
てなる光制御積層体を得た。One piece of the obtained film-like body having a total thickness of about 300 μm was added with a thickness of 0.1% containing an ultraviolet absorber and a radical crosslinking agent.
Two 4mm ethylene-vinyl acetate copolymers (adhesive film)
Using 2a and 2b, a laminated glass (light control laminated body) was produced by inserting two transparent glass plates (transparent plate-shaped bodies) 1a and 1b having a thickness of 3 mm. Thus, the transparent plate 1
A light control laminated body was obtained by sequentially laminating a, the adhesive film 2a, the barrier material 3a, the light control film 4, the barrier material 3b, the adhesive film 2b, and the transparent plate 1b.
【００２３】なお、ガラス板との接着力が充分に強い粘
着剤は現在得られていないので、光制御フィルム４を粘
着剤を用いて直接に透明板状板１ａおよび１ｂで挟んだ
合わせガラスは実用化されていない。Since no adhesive having a sufficiently strong adhesive force with the glass plate has been obtained at present, a laminated glass in which the light control film 4 is directly sandwiched between the transparent plate-like plates 1a and 1b using the adhesive is used. It has not been put to practical use.
【００２４】得られた合わせガラスの促進耐光性試験を
行った。促進耐光性試験は、超促進耐光性試験機「アイ
スーパーＵＶテスター」（大日本プラスチックス株式会
社製、放射照度１００ｍＷ／ｃｍ2 、波長領域２９５ｎ
ｍ〜４５０ｎｍ）を使用し５００時間、該合わせガラス
に紫外線を照射した。この試験機による５００時間の紫
外線照射は屋外の曝露試験の１０年〜２０年に相当す
る。The laminated glass thus obtained was subjected to an accelerated light resistance test. The accelerated light resistance test is a super accelerated light resistance tester "Eye Super UV Tester" (manufactured by Dainippon Plastics Co., Ltd., irradiance 100 mW / cm 2 , wavelength region 295 n
m-450 nm) and the laminated glass was irradiated with ultraviolet rays for 500 hours. UV irradiation for 500 hours by this tester corresponds to 10 to 20 years of the outdoor exposure test.
【００２５】劣化の度合いは、該合わせガラスの色の変
化を測定して評価した。色の測定は、「ＳＭカラーコン
ピューター」（スガ試験機株式会社）を使用し、黄変度
ΔＹＩと色差（ハンター方式）ΔＥを紫外線照射が１０
０時間ごとに測定した。結果を表１に示す。この黄変
度、色差の値は初期の状態と比較して色の変化は目視で
は分からない程度である。The degree of deterioration was evaluated by measuring the change in color of the laminated glass. For the color measurement, "SM color computer" (Suga Test Instruments Co., Ltd.) was used, and the yellowing degree ΔYI and the color difference (Hunter method) ΔE were 10
It was measured every 0 hours. The results are shown in Table 1. The degree of yellowing and the color difference are such that the change in color cannot be visually observed as compared with the initial state.
【００２６】（実施例２）図２に完成品の断面図を示し
てあるが、実施例１と全く同様にして、２００μｍ厚の
高分子膜（光制御フィルム）４の片面に透明板状体に成
形された５０μｍ厚のポリエステルフィルム（バリア
材）３ａが接着されたものを準備する。このように、既
に高分子膜（光制御フィルム）４の片面にポリエステル
フィルム（バリア材）３ａが接着されたものが準備でき
ない場合には、架橋剤を含んでいない粘着剤を用いて両
者を接着する。(Embodiment 2) FIG. 2 is a sectional view of the finished product. Just as in Embodiment 1, a transparent plate-like material is formed on one side of a polymer film (light control film) 4 having a thickness of 200 μm. A polyester film (barrier material) 3a having a thickness of 50 μm molded in 1 is bonded to the prepared film. As described above, when the polyester film (barrier material) 3a already adhered to one side of the polymer film (light control film) 4 cannot be prepared, the both are adhered using a pressure-sensitive adhesive containing no crosslinking agent. To do.
【００２７】次に、高分子膜（光制御フィルム）４のポ
リエステルフィルム（バリア材）３ａが接着されている
面の反対面に、粘着剤により、５０μｍ厚のポリエステ
ルフィルム（バリア材）３ａを接着する。Next, a polyester film (barrier material) 3a having a thickness of 50 μm is adhered to the opposite surface of the polymer film (light control film) 4 to which the polyester film (barrier material) 3a is adhered, using an adhesive. To do.
【００２８】このようにして、得られた総厚約３００μ
ｍの膜状体の１枚を、ラジカル架橋剤を含有する厚さ
０．４ｍｍのエチレン−酢酸ビニル共重合体２枚（接着
膜）１２ａ、１２ｂを用いて、紫外線を遮蔽する機能を
有する、厚さ３ｍｍの透明ガラス板２枚（透明板状体）
１１ａ、１１ｂの間に介挿させ合わせガラス（光制御積
層体）を作製した。かくして、透明板状体１１ａ、接着
膜１２ａ、バリア材３ａ、光制御フィルム４、バリア材
３ｂ、接着膜１２ｂ、透明板状体１１ｂが順次積層して
なる光制御積層体を得た。The total thickness thus obtained is about 300 μm.
One of the m-shaped film bodies is provided with two 0.4-mm-thick ethylene-vinyl acetate copolymers (adhesive films) 12a, 12b containing a radical cross-linking agent, and has a function of blocking ultraviolet rays. Two transparent glass plates with a thickness of 3 mm (transparent plate)
A laminated glass (light control laminated body) was produced by inserting it between 11a and 11b. Thus, a light control laminate was obtained by sequentially laminating the transparent plate-shaped body 11a, the adhesive film 12a, the barrier material 3a, the light control film 4, the barrier material 3b, the adhesive film 12b, and the transparent plate-shaped body 11b.
【００２９】得られた合わせガラスの促進耐光性試験を
実施例１と同様に行った。結果は実施例１の表１の結果
と同等であった。The accelerated light resistance test of the obtained laminated glass was carried out in the same manner as in Example 1. The results were similar to those in Table 1 of Example 1.
【００３０】（比較例１）図３に完成品の断面図を示し
てあるが、実施例１と全く同様にして得られた２００μ
ｍ厚の高分子膜（光制御フィルム）４を、紫外線吸収剤
とラジカル架橋剤を含有する厚さ０．４ｍｍのエチレン
−酢酸ビニル共重合体２枚（接着膜）２ａ、２ｂを用い
て、厚さ３ｍｍの透明ガラス板２枚（透明板状体）１
ａ、１ｂの間に介挿させ合わせガラス（光制御積層体）
を作製した。かくして、透明板状体１ａ、接着膜２ａ、
光制御フィルム４、接着膜２ｂ、透明板状体１ｂが順次
積層してなる光制御積層体を得た。(Comparative Example 1) FIG. 3 shows a sectional view of the finished product, which is obtained in the same manner as in Example 1 and has a thickness of 200 μm.
Using an m-thick polymer film (light control film) 4 with two 0.4-mm-thick ethylene-vinyl acetate copolymers (adhesive films) 2a, 2b containing an ultraviolet absorber and a radical crosslinking agent, Two transparent glass plates with a thickness of 3 mm (transparent plate) 1
Laminated glass that is inserted between a and 1b (light control laminated body)
Was produced. Thus, the transparent plate 1a, the adhesive film 2a,
The light control laminated body which laminated | stacked the light control film 4, the adhesive film 2b, and the transparent plate-shaped body 1b in order was obtained.
【００３１】実施例１と同様に合わせガラスの促進耐光
性試験を行い、色の測定を行った。結果を表１に示す。
この黄変度、色差の値は、照射時間が１００時間のΔＹ
Ｉ＝６．４、ΔＥ＝３．６ともに初期の状態と比較して
色の変化は目視で容易に分かるものであり、特に黄色の
変化が大きい。さらに照射時間が増えた２００時間以降
の数値は著しい変色があることを示す。A laminated glass was subjected to the accelerated light resistance test in the same manner as in Example 1 to measure the color. The results are shown in Table 1.
The values of yellowing degree and color difference are ΔY when the irradiation time is 100 hours.
In both I = 6.4 and ΔE = 3.6, the change in color can be easily visually recognized compared to the initial state, and the change in yellow is particularly large. The value after 200 hours when the irradiation time was further increased indicates that there is a significant discoloration.
【００３２】[0032]
【表１】 [Table 1]
【００３３】[0033]
【発明の効果】本発明は、透明板状体と透明板状体との
間に光制御フィルムを介挿させた光制御積層体がエネル
ギの高い紫外線などが当たる屋外などに使用された場合
における光制御フィルムの劣化を少なくし、約１０年以
上は劣化の一つである変色が目視では確認できないもの
であるような優れた効果を有する。INDUSTRIAL APPLICABILITY The present invention can be applied to a case where a light control laminated body in which a light control film is interposed between transparent plate-shaped bodies is used outdoors such as when high-energy ultraviolet rays are exposed. It has an excellent effect that the deterioration of the light control film is reduced and the discoloration, which is one of the deteriorations for about 10 years or more, cannot be visually confirmed.
【図１】実施例１の光制御積層体の断面図FIG. 1 is a sectional view of a light control laminated body of Example 1.
【図２】実施例２の光制御積層体の断面図FIG. 2 is a sectional view of a light control laminated body of Example 2.
【図３】比較例１の光制御積層体の断面図FIG. 3 is a sectional view of a light control laminated body of Comparative Example 1.
１ａ、１ｂ：厚さ３ｍｍの透明ガラス板（透明板状
体）、 ２ａ、２ｂ：紫外線吸収剤とラジカル架橋剤を含有する
厚さ４００μｍのエチレン−ビニル酢酸共重合体（接着
膜）、 ３ａ、３ｂ：厚さ５０μｍのポリエステルフィルム（バ
リア材）、 ４：厚さ２００μｍのトリブロモフェノキシエチルアク
リレートを含有する高分子膜（光制御フィルム）、 １１ａ、１１ｂ：紫外線を遮蔽する機能を有している厚
さ３ｍｍの透明ガラス板（透明板状体）、 １２ａ、１２ｂ：ラジカル架橋剤を含有する厚さ４００
μｍのエチレン−ビニル酢酸共重合体（接着膜）。1a, 1b: 3 mm thick transparent glass plate (transparent plate), 2a, 2b: 400 μm thick ethylene-vinylacetic acid copolymer (adhesive film) containing an ultraviolet absorber and a radical crosslinking agent, 3a, 3b: Polyester film having a thickness of 50 μm (barrier material), 4: Polymer film containing tribromophenoxyethyl acrylate having a thickness of 200 μm (light control film), 11a, 11b: having a function of blocking ultraviolet rays 3 mm thick transparent glass plate (transparent plate), 12a, 12b: thickness 400 containing radical crosslinking agent
μm ethylene-vinyl acetic acid copolymer (adhesive film).
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０３Ｃ 27/12 Ｃ０３Ｃ 27/12 Ｅ // Ｂ３２Ｂ 17/10 Ｂ３２Ｂ 17/10 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C03C 27/12 C03C 27/12 E // B32B 17/10 B32B 17/10
Claims (7)
リア材（３ａ）、光制御フィルム（４）、バリア材（３
ｂ）、接着膜（２ｂ）、透明板状体（１ｂ）を順次積層
してなる光制御積層体であって、接着膜（２ａ）および
接着膜（２ｂ）が紫外線を遮蔽する機能を有し、光制御
フィルム（４）が光制御フィルム（４）のフィルム面に
対し所定の角度範囲内にある入射光のみを選択的に散乱
し、それ以外の角度の入射光は透過する特性を有するこ
とを特徴とする光制御積層体。1. A transparent plate (1a), an adhesive film (2a), a barrier material (3a), a light control film (4), and a barrier material (3).
b), an adhesive film (2b) and a transparent plate-like body (1b) which are laminated in this order, and the adhesive film (2a) and the adhesive film (2b) have a function of blocking ultraviolet rays. The light control film (4) has a property of selectively scattering only incident light within a predetermined angle range with respect to the film surface of the light control film (4) and transmitting incident light of other angles. A light control laminated body characterized by:
エチレン−酢酸ビニル共重合体と架橋剤を含む接着性樹
脂の硬化物であることを特徴とする請求項１の光制御積
層体。2. An adhesive film (2a) and an adhesive film (2b),
The light control laminate according to claim 1, which is a cured product of an adhesive resin containing an ethylene-vinyl acetate copolymer and a crosslinking agent.
ａ）、バリア材（３ａ）、光制御フィルム（４）、バリ
ア材（３ｂ）、接着膜（１２ｂ）、透明板状体（１１
ｂ）を順次積層してなる光制御積層体であって、透明板
状体（１１ａ）および透明板状体（１１ｂ）が紫外線を
遮蔽する機能を有し、光制御フィルム（４）が光制御フ
ィルム（４）のフィルム面に対し所定の角度範囲内にあ
る入射光のみを選択的に散乱し、それ以外の角度の入射
光は透過する特性を有することを特徴とする光制御積層
体。3. A transparent plate (11a) and an adhesive film (12).
a), barrier material (3a), light control film (4), barrier material (3b), adhesive film (12b), transparent plate (11)
A light control laminated body formed by sequentially laminating b), wherein the transparent plate-like body (11a) and the transparent plate-like body (11b) have a function of blocking ultraviolet rays, and the light control film (4) is a light control film. A light control laminated body having a characteristic of selectively scattering only incident light within a predetermined angle range with respect to the film surface of the film (4) and transmitting incident light of other angles.
が、エチレン−酢酸ビニル共重合体と架橋剤を含む接着
性樹脂の硬化物であることを特徴とする請求項３の光制
御積層体。4. An adhesive film (12a) and an adhesive film (12b)
Is a cured product of an adhesive resin containing an ethylene-vinyl acetate copolymer and a cross-linking agent.
差があるオリゴマーとモノマーからなる樹脂組成物を硬
化させて成形されたもの、または、互いに屈折率に差が
あるモノマーと他のモノマーからなる樹脂組成物を硬化
させて成形されたものであることを特徴とする請求項
１、２、３または４の光制御積層体。5. A light control film (4), which is formed by curing a resin composition comprising an oligomer and a monomer having a difference in refractive index from each other, or a monomer and another resin having a difference in refractive index from each other. The light control laminated body according to claim 1, which is formed by curing a resin composition including a monomer.
差がある光重合性オリゴマーと光重合性モノマーからな
る樹脂組成物に紫外線を照射して硬化させて成形された
もの、または、互いに屈折率に差がある光重合性モノマ
ーと他の光重合性モノマーからなる樹脂組成物に紫外線
を照射して硬化させて成形されたものであることを特徴
とする請求項１、２、３または４の光制御積層体。6. A light control film (4) molded by irradiating an ultraviolet ray to a resin composition comprising a photopolymerizable oligomer and a photopolymerizable monomer having different refractive indexes to cure the resin composition, or A resin composition comprising a photopolymerizable monomer and a different photopolymerizable monomer having a difference in refractive index from each other, which is molded by irradiating ultraviolet rays to cure the resin composition. Or the light control laminated body of 4.
がポリエステル、ポリエチレン、ポリ塩化ビニルまたは
ポリプロピレンフィルムからなる透明フィルムであるこ
とを特徴とする請求項１、２、３、４、５または６の光
制御積層体。7. A barrier material (3a) and a barrier material (3b)
Is a transparent film made of a polyester, polyethylene, polyvinyl chloride or polypropylene film, and the light control laminate according to claim 1, 2, 3, 4, 5 or 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7144999A JPH08338902A (en) | 1995-06-12 | 1995-06-12 | Light-controlling laminated body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7144999A JPH08338902A (en) | 1995-06-12 | 1995-06-12 | Light-controlling laminated body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08338902A true JPH08338902A (en) | 1996-12-24 |
Family
ID=15375118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7144999A Pending JPH08338902A (en) | 1995-06-12 | 1995-06-12 | Light-controlling laminated body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08338902A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050101510A (en) * | 2004-04-19 | 2005-10-24 | 한장민 | Production method of a functional polymer films which can change a transmittance rate of ultraviolet and visible light |
| KR100600376B1 (en) * | 2004-05-06 | 2006-07-14 | 한장민 | Production Method of An Anti-Ultraviolet Film |
| JP2007178673A (en) * | 2005-12-27 | 2007-07-12 | Kuraray Co Ltd | Optical sheet for display panel, and display panel |
| KR100750294B1 (en) * | 2006-03-20 | 2007-08-20 | 주식회사 엘엔씨테크 | Case plate and method for the same |
| KR100826970B1 (en) * | 2007-01-03 | 2008-05-02 | 주식회사 엘엔씨테크 | Case plate having color transparent window and method for forming the window |
| CN115917108A (en) * | 2020-08-21 | 2023-04-04 | Ａｇｃ株式会社 | Laminated glass and method for producing laminated glass |
-
1995
- 1995-06-12 JP JP7144999A patent/JPH08338902A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050101510A (en) * | 2004-04-19 | 2005-10-24 | 한장민 | Production method of a functional polymer films which can change a transmittance rate of ultraviolet and visible light |
| KR100600376B1 (en) * | 2004-05-06 | 2006-07-14 | 한장민 | Production Method of An Anti-Ultraviolet Film |
| JP2007178673A (en) * | 2005-12-27 | 2007-07-12 | Kuraray Co Ltd | Optical sheet for display panel, and display panel |
| KR100750294B1 (en) * | 2006-03-20 | 2007-08-20 | 주식회사 엘엔씨테크 | Case plate and method for the same |
| KR100826970B1 (en) * | 2007-01-03 | 2008-05-02 | 주식회사 엘엔씨테크 | Case plate having color transparent window and method for forming the window |
| CN115917108A (en) * | 2020-08-21 | 2023-04-04 | Ａｇｃ株式会社 | Laminated glass and method for producing laminated glass |
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