JP3825073B2 - Projection screen paint and projection screen using the same - Google Patents
Projection screen paint and projection screen using the same Download PDFInfo
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Description
【０００１】
【産業上の利用分野】
本発明は映写スクリ−ン用塗料及びこれを用いた映写スクリ−ンに関し、更に詳しくは低輝度から高輝度の種々の光輝性を選択でき、しかも光拡散性が良く、かつ基材や塗装面積を選ばずに反射層を形成できる映写スクリ−ン用塗料及びこれを用いた映写スクリ−ンに関する。
【０００２】
【従来技術及びその課題】
映写スクリ−ンは従来よりスライドプロジェクタ−やオ−バ−ヘッドプロジェクタ−用スクリ−ン等として広く使用されている。近年、テレビ画面の大型化に伴って投影型（例えば液晶）ビデオが普及してきており、家庭においても映写スクリ−ンが使用されるようになってきている。
【０００３】
従来のプロジュクタ−及び映写スクリ−ンでは、光拡散性が低いために、スクリ−ン面に対して限られた範囲の角度でしか映像をみることができなかった。これに対し従来、
i ）アルミニウム顔料量を増加する、
ii）塗料をよく攪拌して、吹き付け塗装する、
iii)乾燥の早い溶剤を使用し、これが塗膜から抜ける際に生じる対流で塗膜内のアルミニウム顔料の配向を乱雑にする、
iv）ガラスビ−ズ等の被着又は配合により基材表面又は塗膜面を凹凸にする、などの方策が採られてきた。しかしながら、これらの方策では、それぞれi)樹脂分に対してアルミニウム顔料量が多すぎると強靭な反射層とできず巻き上げ式スクリ−ンに不適となる、ii）分散性の劣るアルミニウム顔料等が短時間で沈降し均一に大面積を塗装できない、iii)溶剤の蒸発が早すぎると吹き付け塗装でダスト（空中で乾燥してしまい塗着時に粉状の塗料になったもの）を多量に生じるため均一な大面積の反射層が得られない、iv) 製造工程が複雑になるためコストの増加を招き、また表面が凹凸なので汚れがつきやすく清掃しにくい、さらに巻き上げ式のスクリ−ンとすると、巻いたり伸ばしたりを繰り返すうちにビ−ズ等が脱落してしまう、という問題があった。近年企業や家庭用でも大画面化が進んでおり、比較的近い距離から複数の人が画面をみるため、投影された映像を広い角度範囲からでも鮮明に見えるように、スクリ−ンの光拡散性の向上が望まれている。
【０００４】
一方従来プロジュクタ−及び映写スクリ−ンでは、輝度が低いために使用時には室内を暗くする必要があった。通常映画館やプラネタリウムなどの場所では低輝度のスクリ−ンでよいが、例えば会議室などの場所ではオ−バ−ヘッドプロジェクタ−使用中に観察者が手元でメモ等をとれる程度に室内が明るくできるよう該室内でも使用できるより高輝度のスクリ−ンが望まれている。
【０００５】
【課題を解決するための手段】
本発明者らは、上記不具合を解消すべく鋭意検討した結果、本発明に到達した。
【０００６】
すなわち本発明は、光輝性顔料、拡散剤として酸化ケイ素粉、アマイド系チクソトロピック剤及びアクリルポリオールとポリイソシアネートからなる塗料用樹脂を必須成分として含有し、光輝性顔料が、塗料用樹脂１００重量部に対して１〜１５０重量部配合され、拡散剤の配合量が、光輝性顔料量の１〜５０重量％であることを特徴とする映写スクリ−ン用塗料、および反射層として該塗料からなる層を設けたことを特徴とする映写スクリ−ンに関するものである。
【０００７】
本発明塗料に使用される光輝性顔料は、低輝度用途又は高輝度用途により適宜選択され、例えば低輝度用途では通常のアルミニウム顔料、パ−ル顔料、グラファイト、方解石など、高輝度用途なら高輝性アルミニウム顔料、ガラスフレ−ク、金属めっきされたガラスフレ−ク、リン片状の各種金属粉などが挙げられ、これらは１種又は２種以上併用することができ、要求される輝度に応じて適宜選択できる。また、輝度や色調の微調整には通常の原色顔料ペ−ストを併用することもできる。
【０００８】
上記アルミニウム顔料は、その形状などによって塗膜の反射輝度を調整するものであり、スクリ−ンゲイン値３以上の高輝度からゲイン値１以下の低輝度のものまで提供することができる。低輝度のアルミニウム顔料は、平均粒径５〜１５０μｍで粒子表面及び側面が粗面であるアルミニウム顔料であり、その粒度分布が広い。一方高輝度のアルミニウム顔料は、平均粒径５〜１５０μｍで粒子表面及び側面が平滑であるアルミニウム顔料であり、その粒度分布は比較的狭い。
【０００９】
光輝性顔料の配合量は、塗料用樹脂１００重量部に対して１〜１５０重量部、好ましくは１０〜１００重量部が適当である。かかる配合量が１重量部未満であると、隠蔽性が劣ることとなり十分な反射性が得られず、一方１５０重量部を越えると塗膜強度が低下し汚れが付着しやすくなるので好ましくない。
【００１０】
本発明において拡散剤は、前記光輝性顔料を塗膜内でランダムに配向・拡散させるために配合されるものであり、光輝性顔料に比べて微細な粒径０．００５〜１００μｍのリン片状顔料が好適である。かかる拡散剤としては、例えばマイカ粉（天然、合成）、酸化ケイ素粉などが挙げられる。
【００１１】
該拡散剤の配合量は、前記光輝性顔料量の１〜５０重量％、好ましくは５〜３０重量％となるようにするのが適当である。かかる配合比が１重量％未満では十分な拡散性が得られず、一方５０重量％を越えると十分な反射性が得られない恐れがあるので好ましくない。
【００１２】
本発明においてチクソトロピック剤は、前記アルミニウム顔料を塗料中で十分に分散させて前記アルミニウム顔料の塗料・塗膜中での沈降を防止するために配合されるものであり、例えばベントナイトのアミン塩系、リン酸化合物のアミン塩系、脂肪酸アマイド系、高分子ポリカルボン酸塩系、アクリル酸エステル系、ポリアクリル酸系、酸化ポリエチレン系、塩基性カルシウム・スルホン酸系、水添ひまし油系、脱水ひまし油系、変性脂肪酸系などの化合物が挙げられ、このうちベントナイトのアミン塩系、脂肪酸アマイド系、酸化ポリエチレン系などが好適である。
【００１３】
チクソトロピック剤の配合量は、塗料用樹脂１００重量部に対して１〜５０重量部、好ましくは１〜３０重量部、さらに好ましくは３〜１０重量部が適当である。
【００１４】
本発明塗料に使用しうる塗料用樹脂としては、有機溶剤系や水系等の従来公知の樹脂が使用でき、例えばラッカ−タイプのアルキド系樹脂やアクリル系樹脂、アクリル変性アルキド樹脂、アクリル系ウレタン樹脂、ポリエステル系ウレタン樹脂、アミノアクリル系樹脂、メラミン樹脂、セルロ−ス系樹脂などが挙げられ、このうち作業性の点から常温乾燥型のものが好ましく、特に耐久性、耐候性などの点からアクリルポリオ−ルとポリイソシアネ−トからなるアクリル系ウレタン樹脂が好適である。また適用される基材等に応じて使用樹脂や硬化剤種が適宜選択可能であり、例えば適用基材が軟質材の場合には軟質に設計された樹脂や軟質硬化剤を使用すればよい。
【００１５】
本発明塗料は、上記光輝性顔料、拡散剤、チクソトロッピック剤及び塗料用樹脂を必須成分として含有するものであるが、さらに必要に応じてその他の顔料類、水や有機溶剤等の溶剤、塗料用添加剤などを含有してもよい。
【００１６】
本発明塗料は、スプレ−塗装、ロ−ルコ−ト、グラビアコ−トなどの既知の方法により被塗面に塗布され、反射層が形成される。該反射層の塗布量は、１００〜５００ｇ／ｍ2 程度が適当である。
【００１７】
本発明の映写スクリ−ンは、反射層として、光輝性顔料、拡散剤、チクソトロッピック剤及び塗料用樹脂を必須成分として含有する上記塗料からなる層を設けてなるものであれば、特に制限なく固定式の映写スクリ−ンでも巻き上げ式の映写スクリ−ンでもよい。
【００１８】
固定式の映写スクリ−ンとしては、平面状或いはわん曲面に対応する球状面などとした平滑な基材上に反射層を直接設けてなるもの、さらにその上に保護層を設けてなるもの、あるいは基材表面を細長いしわ状の面とした上や基材上にガラスビ−ズ等の層を接着して表面を凹凸にした上に反射層を設けてなるものなどいずれのタイプにも適用可能であり、特に平滑な基材上に反射層を形成してなるものが製造工程上有利である。
【００１９】
巻き上げ式の映写スクリ−ンとしては、平滑な基材上に反射層を直接設けてなるもの、さらにその上に保護層を設けてなるもの、あるいは基材表面を細長いしわ状の面とした上や基材上にガラスビ−ズ等の層を接着して表面を凹凸にした上に反射層を設けてなるもの、基材上に反射層を設けた上にガラスビ−ス等を含めた、あるいはエンボス加工した光拡散層を設けてなるものなどいずれのタイプにも適用可能であり、このうち巻き上げに対する耐久性に有利な表面平滑なスクリ−ンが好適である。家庭用としては、設置場所を必要とする固定式よりも巻き上げ式の映写スクリ−ンが好適である。
【００２０】
固定式の基材としては、剛性を有する材料、例えば鉄、アルミ等の金属板、木質板、プラスチック板などが挙げられる。
【００２１】
巻き上げ式の基材としては、可撓性を有する材料、例えばポリ塩化ビニル、ポリエステル、ポリオレフィン等のプラスチックシ−ト、鉄、アルミ等の金属薄板、各種の紙類や布類、またそれらの積層体などが挙げられ、任意に選ぶことができる。これらにガラス繊維の布を積層してもよく、例えば、黒色ポリ塩化ビニルシ−ト／ガラス織布／白色ポリ塩化ビニルシ−ト、黒色ポリ塩化ビニルシ−ト／ガラス織布／黒色ポリ塩化ビニルシ−トなどの構成が挙げられる。
【００２２】
低輝度スクリ−ンを得る場合には、反射層として前記低輝度のアルミニウム顔料などを配合してなる塗料を塗布する。
【００２３】
一方高輝度スクリ−ンを得る場合には、反射層として前記高輝度のアルミニウム顔料などを配合してなる塗料を塗布する。
【００２４】
【実施例】
以下、実施例により本発明をさらに具体的に説明するが、本発明は下記実施例により限定されるものではない。尚、「部」及び「％」は「重量部」及び「重量％」を意味する。
【００２５】
スクリ−ン用塗料の作成
実施例１
高輝度アルミニウムペ−スト（注１）４０部に、キシレン６０部、チクソトロッピック剤（注２）１５部及び酸化ケイ素粉（注３）３．５部を添加し混合・攪拌した後、これに５０％アクリルポリオ−ル１４５部、３５％セルロ−スアセテ−トブチレ−ト（ＣＡＢ）変性アクリル樹脂７０部及び酢酸エチル７０部を添加し混合・攪拌して塗料主剤を得た。硬化剤としてポリイソシアネ−ト（注４）７部を使用し塗装直前に上記主剤と混合してスクリ−ン用塗料を作成した。
【００２６】
（注１）「アルミニウムペ−スト８９１Ｋ」、７２％、平均粒径１５μｍ、東洋アルミニウム社製
（注２）「ディスパロンＡ６３０−２０ＸＮ」、ポリアマイド系、楠本化成社製
（注３）「カ−プレックスＣＳ−８０１」、粒径７μｍ、塩野義製薬社製
（注４）「スミジュ−ルＮ３５００」、７５％、住友バイエル社製
実施例２〜９及び比較例１〜３
表１に示す組成及び配合で実施例１と同様の操作により各スクリ−ン用塗料を得た。表１中の（注５）〜（注１１）は下記の通りである。
【００２７】
（注５）「ＭＣ−６０６」、６０％、平均粒径１８μｍ、旭化成社製
（注６）「Ｔ−２０５４」、５７％、平均粒径１５μｍ、東洋アルミニウム社製
（注７）「メタシャイン」、日本硝子繊維社製
（注８）「イリオジン−１０１Ｐ」、メルク社製
（注９）「ＡＳＥ−６０」、２８％、ポリアクリル酸系、ロ−ムアンドハ−ス社製
（注１０）「ＵＸ６０００」、３９％、三洋化成社製
（注１１）「デュラネ−トＥ５００４」、７５％、旭化成社製
スクリ−ンの作成
上記で得られた各スクリ−ン用塗料を適宜シンナ−で希釈して、厚さ１ｍｍの平渇なアルミニウム板（Ａ）またはポリ塩化ビニルシ−ト（Ｐ）上に塗布量約１５０〜２００ｇ／ｍ2 となるようにスプレ−塗装し、２０℃で３日間乾燥して各スクリ−ンを得た。比較例１及び３のスクリ−ンには、塗装面のムラが著しく発生していた。各スクリ−ンについて、光輝感及び視野角を調べた結果を表１に示す。
【００２８】
（＊１）光輝感：各スクリ−ンに対し、液晶プロジェクタにより投影して輝度計（ミノルタ社製）を用いて正面反射輝度を測定した。これより各スクリ−ンについて標準白板反射輝度を基準（ゲイン１）にしたスクリ−ンゲインを示す。
【００２９】
（＊２）視野角：各スクリ−ンについて、上記と同様にして各方向より反射輝度を測定し、該反射輝度が正面反射輝度の１／２となる角度（α値）により下記基準で評価した。数値が大きい程、視野角が広いことを示す。
【００３０】
◎：α値が２０度以上
○： 〃 １０度以上２０度未満
×： 〃 １０度未満
【００３１】
【発明の効果】
本発明塗料を反射層として塗布すると、拡散剤によってアルミニウム顔料の配向が乱雑となるので、スクリ−ン表面を凹凸にせずとも十分な光拡散性が確保でき指向性の少ない映写スクリ−ンとすることができ、しかも使用する光輝性顔料、例えばアルミニウム顔料表面の特性によって光反射性を調整できるので低輝度から高輝度の種々の反射面とすることができる。特に高輝度のアルミニウム顔料等を使用すれば、デイライトでも鮮明な画像を与え、かつ広角度でも鮮明な映像を投影できる。
【００３２】
本発明塗料による反射層は、拡散剤によってアルミニウム顔料の配向が乱雑となるので、本発明のスクリ−ン表面は凹凸にせずとも十分な光拡散性が確保でき、巻き上げに対する耐久性に有利な、しかも凹凸にするための製造工程が不要な、表面平滑映写スクリ−ンを提供しうる。
【００３３】
【表１】
[Industrial application fields]
The present invention relates to a projection screen paint and a projection screen using the same, and more specifically, various brightness from low brightness to high brightness can be selected, and light diffusibility is good, and a substrate and a coating area are provided. The present invention relates to a projection screen paint capable of forming a reflective layer without selecting a film and a projection screen using the same.
[0002]
[Prior art and its problems]
Projection screens have been widely used as screens for slide projectors and overhead projectors. In recent years, projection type (for example, liquid crystal) video has become widespread with the increase in the size of television screens, and projection screens have been used even at home.
[0003]
Conventional projectors and projection screens have low light diffusivity, so that images can be viewed only within a limited range of angles with respect to the screen surface. In contrast,
i) increase the amount of aluminum pigment,
ii) Stir the paint well and spray
iii) using a fast-drying solvent and turbulent convection as it escapes from the coating, making the orientation of the aluminum pigment in the coating messy,
iv) Measures have been taken such as making the substrate surface or coating surface uneven by applying or blending glass beads or the like. However, in each of these measures, i) if the amount of the aluminum pigment is too much relative to the resin component, a tough reflective layer cannot be formed, making it unsuitable for a roll-up screen, and ii) an aluminum pigment having poor dispersibility is short. Iii) If the solvent evaporates too early, the spray coating will generate a large amount of dust (dried in the air and turned into a powdery paint at the time of application). A large reflective area cannot be obtained, iv) The manufacturing process becomes complicated, resulting in an increase in cost, and the surface is uneven, making it easy to get dirty and difficult to clean. There was a problem that beads and the like dropped out while repeating stretching and stretching. In recent years, large screens have been developed for businesses and homes, and since multiple people see the screen from a relatively close distance, the light diffusion of the screen can be seen so that the projected image can be seen clearly even from a wide angle range. Improvement of the property is desired.
[0004]
On the other hand, conventional projectors and projection screens have a low brightness, and therefore it is necessary to darken the room during use. Normally, a screen with a low brightness may be used in places such as movie theaters and planetariums, but in places such as conference rooms, the room is bright enough to allow an observer to take notes while using an overhead projector. A higher brightness screen that can be used in the room is desired.
[0005]
[Means for Solving the Problems]
The inventors of the present invention have arrived at the present invention as a result of intensive studies to solve the above problems.
[0006]
That is, the present invention contains, as essential components, a glitter pigment, a silicon oxide powder as a diffusing agent , an amide thixotropic agent, and a coating resin composed of acrylic polyol and polyisocyanate , and the glitter pigment comprises 100 parts by weight of the coating resin. 1 to 150 parts by weight, and the amount of the diffusing agent is 1 to 50% by weight of the amount of the luster pigment , and comprises the coating material as a reflective layer. The present invention relates to a projection screen characterized by providing a layer.
[0007]
The glitter pigment used in the paint of the present invention is appropriately selected depending on the low-luminance application or the high-luminance application. For example, in the low-luminance application, a normal aluminum pigment, a par pigment, graphite, calcite, etc. Examples include aluminum pigments, glass flakes, metal-plated glass flakes, and various metal powders in the form of flakes, which can be used alone or in combination of two or more, and are appropriately selected according to the required luminance. it can. Further, a normal primary color pigment paste can be used in combination for fine adjustment of luminance and color tone.
[0008]
The aluminum pigment adjusts the reflection luminance of the coating film depending on its shape and the like, and can be provided from a high luminance having a screen gain value of 3 or more to a low luminance having a gain value of 1 or less. The low-luminance aluminum pigment is an aluminum pigment having an average particle size of 5 to 150 μm and rough surfaces and side surfaces, and has a wide particle size distribution. On the other hand, a high-luminance aluminum pigment is an aluminum pigment having an average particle diameter of 5 to 150 μm and smooth surface and side surfaces, and its particle size distribution is relatively narrow.
[0009]
The blending amount of the glitter pigment is 1 to 150 parts by weight, preferably 10 to 100 parts by weight, based on 100 parts by weight of the coating resin. When the blending amount is less than 1 part by weight, the concealability is inferior and sufficient reflectivity cannot be obtained. On the other hand, when it exceeds 150 parts by weight, the coating film strength is lowered and dirt is likely to adhere.
[0010]
In the present invention, the diffusing agent is blended in order to randomly orient and diffuse the glitter pigment in the coating film, and in the form of flakes having a fine particle diameter of 0.005 to 100 μm compared to the glitter pigment. Pigments are preferred. Examples of the diffusing agent include mica powder (natural and synthetic) and silicon oxide powder.
[0011]
The blending amount of the diffusing agent is suitably 1 to 50% by weight, preferably 5 to 30% by weight of the amount of the glitter pigment. If the blending ratio is less than 1% by weight, sufficient diffusibility cannot be obtained. On the other hand, if it exceeds 50% by weight, sufficient reflectivity may not be obtained.
[0012]
In the present invention, the thixotropic agent is blended in order to sufficiently disperse the aluminum pigment in the paint and prevent the aluminum pigment from settling in the paint / coating film. , Phosphoric acid amine salts, fatty acid amides, polymeric polycarboxylates, acrylic esters, polyacrylic acids, polyethylene oxides, basic calcium and sulfonic acids, hydrogenated castor oil, dehydrated castor oil And bentonite amine salts, fatty acid amides, polyethylene oxides and the like are preferred.
[0013]
The mixing amount of the thixotropic agent is 1 to 50 parts by weight, preferably 1 to 30 parts by weight, and more preferably 3 to 10 parts by weight with respect to 100 parts by weight of the coating resin.
[0014]
As the coating resin that can be used in the paint of the present invention, conventionally known resins such as organic solvent-based and water-based resins can be used. For example, lacquer-type alkyd resins, acrylic resins, acrylic-modified alkyd resins, acrylic urethane resins. , Polyester urethane resin, aminoacrylic resin, melamine resin, cellulose resin, etc. Among these, room temperature drying type is preferable from the viewpoint of workability, and acrylic is particularly preferable from the viewpoint of durability and weather resistance. An acrylic urethane resin composed of polyol and polyisocyanate is preferred. In addition, the resin used and the type of curing agent can be appropriately selected according to the substrate to be applied. For example, when the application substrate is a soft material, a softly designed resin or soft curing agent may be used.
[0015]
The paint of the present invention contains the above-mentioned glitter pigment, diffusing agent, thixotropic agent and resin for paint as essential components, but if necessary, other pigments, solvents such as water and organic solvents, You may contain the additive for coating materials.
[0016]
The coating composition of the present invention is applied to the surface to be coated by a known method such as spray coating, roll coating, gravure coating, etc. to form a reflective layer. The coating amount of the reflective layer is about 100 to 500 g / m 2 are suitable.
[0017]
The projection screen of the present invention is not particularly limited as long as the reflective layer is provided with a layer composed of the above-mentioned paint containing essential pigments, a lustrous pigment, a diffusing agent, a thixotropic agent, and a coating resin. There may be either a fixed projection screen or a roll-up projection screen.
[0018]
As a fixed projection screen, a reflection layer is directly provided on a smooth substrate such as a spherical surface corresponding to a flat surface or a curved surface, and a protective layer is further provided thereon. Alternatively, it can be applied to any type, such as a substrate with a long and wrinkled surface, a glass bead layer on the substrate, and a reflective layer on the surface. In particular, it is advantageous in the production process to form a reflective layer on a smooth substrate.
[0019]
As a roll-up type projection screen, a reflective substrate is directly provided on a smooth substrate, a protective layer is further provided thereon, or the substrate surface is formed into an elongated wrinkled surface. Or a glass bead or the like formed on a base material by attaching a layer such as a glass bead to make the surface uneven, or a glass layer or the like including a reflective layer on a base material, or The present invention can be applied to any type including an embossed light diffusion layer, and among these, a smooth surface screen advantageous in durability against winding is preferable. For home use, a roll-up type projection screen is more suitable than a fixed type requiring an installation place.
[0020]
Examples of the fixed base material include a material having rigidity, such as a metal plate such as iron or aluminum, a wooden plate, or a plastic plate.
[0021]
As a roll-up type base material, flexible materials, for example, plastic sheets such as polyvinyl chloride, polyester and polyolefin, metal thin plates such as iron and aluminum, various papers and cloths, and laminates thereof The body etc. are mentioned and can be chosen arbitrarily. Glass fiber cloth may be laminated on these, for example, black polyvinyl chloride sheet / glass woven cloth / white polyvinyl chloride sheet, black polyvinyl chloride sheet / glass woven cloth / black polyvinyl chloride sheet. And the like.
[0022]
In the case of obtaining a low brightness screen, a coating material containing the low brightness aluminum pigment or the like is applied as a reflective layer.
[0023]
On the other hand, when obtaining a high-intensity screen, a paint containing the above-described high-intensity aluminum pigment is applied as a reflective layer.
[0024]
【Example】
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to the following examples. “Parts” and “%” mean “parts by weight” and “% by weight”.
[0025]
Preparation of a paint for a screen Example 1
After adding and mixing and stirring 60 parts of xylene, 15 parts of thixotropic agent (note 2) and 3.5 parts of silicon oxide powder (note 3) to 40 parts of high-intensity aluminum paste (note 1) 145 parts of 50% acrylic polyol, 70 parts of 35% cellulose acetate butyrate (CAB) -modified acrylic resin and 70 parts of ethyl acetate were added and mixed and stirred to obtain a paint base. 7 parts of polyisocyanate (Note 4) was used as a curing agent and mixed with the above main agent just before coating to prepare a coating for screen.
[0026]
(Note 1) “Aluminum paste 891K”, 72%, average particle size 15 μm, manufactured by Toyo Aluminum Co., Ltd. (Note 2) “Disparon A630-20XN”, polyamide, manufactured by Enomoto Kasei Co., Ltd. (Note 3) “Carplex” CS-801 ”, particle size 7 μm, manufactured by Shionogi & Co., Ltd. (Note 4)“ Sumijur N3500 ”, 75%, Examples 2-9 and Sumitomo Bayer Examples 2-9 and Comparative Examples 1-3
Each screen paint was obtained by the same operation as in Example 1 with the composition and formulation shown in Table 1. (Note 5) to (Note 11) in Table 1 are as follows.
[0027]
(Note 5) “MC-606”, 60%, average particle size 18 μm, manufactured by Asahi Kasei Corporation (Note 6) “T-2054”, 57%, average particle size 15 μm, manufactured by Toyo Aluminum Co., Ltd. (Note 7) “Metashine” ”, Manufactured by Nippon Glass Fiber Co., Ltd. (Note 8)“ Iriodin-101P ”, manufactured by Merck Co., Ltd. (Note 9)“ ASE-60 ”, 28%, polyacrylic acid, manufactured by Rohm and Haas Co., Ltd. (Note 10) "UX6000", 39%, manufactured by Sanyo Chemical Co., Ltd. (Note 11) "Duranet E5004", 75%, manufactured by Asahi Kasei Corporation
Subscription - down creation <br/> each subscription obtained above - was diluted with a flat thirst aluminum plate having a thickness of 1 mm (A) or polychlorinated Binirushi - - A coating down appropriately thinner preparative (P) A spray coating was applied so that the coating amount was about 150 to 200 g / m 2, and each screen was obtained by drying at 20 ° C. for 3 days. In the screens of Comparative Examples 1 and 3, unevenness of the painted surface was remarkably generated. Table 1 shows the results of examining the glitter and viewing angle for each screen.
[0028]
(* 1) Brightness: Each screen was projected by a liquid crystal projector and the front reflection luminance was measured using a luminance meter (Minolta). Thus, the screen gain with respect to the standard white plate reflection luminance as a reference (gain 1) is shown for each screen.
[0029]
(* 2) Viewing angle: For each screen, the reflected luminance is measured from each direction in the same manner as described above, and evaluated according to the following criteria based on the angle (α value) at which the reflected luminance becomes 1/2 of the front reflected luminance. did. The larger the value, the wider the viewing angle.
[0030]
◎: α value is 20 degrees or more ○: 〃 10 degrees or more and less than 20 degrees ×: 未 満 Less than 10 degrees [0031]
【The invention's effect】
When the coating material of the present invention is applied as a reflective layer, the orientation of the aluminum pigment is messed up by the diffusing agent. Moreover, since the light reflectivity can be adjusted according to the characteristics of the glitter pigment used, for example, the aluminum pigment surface, various reflective surfaces with low to high luminance can be obtained. In particular, if a high-luminance aluminum pigment or the like is used, a clear image can be given even in daylight, and a clear image can be projected even at a wide angle.
[0032]
The reflective layer of the paint of the present invention makes the orientation of the aluminum pigment messed up by the diffusing agent. In addition, it is possible to provide a surface smooth projection screen that does not require a manufacturing process for forming irregularities.
[0033]
[Table 1]
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33141695A JP3825073B2 (en) | 1994-12-28 | 1995-12-20 | Projection screen paint and projection screen using the same |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-326550 | 1994-12-28 | ||
| JP32655094 | 1994-12-28 | ||
| JP33141695A JP3825073B2 (en) | 1994-12-28 | 1995-12-20 | Projection screen paint and projection screen using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08231904A JPH08231904A (en) | 1996-09-10 |
| JP3825073B2 true JP3825073B2 (en) | 2006-09-20 |
Family
ID=26572216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33141695A Expired - Lifetime JP3825073B2 (en) | 1994-12-28 | 1995-12-20 | Projection screen paint and projection screen using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3825073B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10129899A1 (en) * | 2001-06-21 | 2003-01-09 | Basf Coatings Ag | Aqueous coating material curable physically, thermally or thermally and with actinic radiation and its use |
| DE10245881A1 (en) * | 2002-09-30 | 2004-04-08 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Contrast-increasing screen |
| JP5750355B2 (en) * | 2011-10-17 | 2015-07-22 | 株式会社有沢製作所 | Transmission screen and rear projection device |
| JP6398450B2 (en) * | 2014-02-14 | 2018-10-03 | 大日本印刷株式会社 | Reflective screen, video display system |
| CN113493635B (en) * | 2020-04-03 | 2022-08-02 | 北京石墨烯研究院有限公司 | Coating for light-resistant screen and light-resistant screen |
| CN113493636B (en) * | 2020-04-07 | 2023-12-01 | 深圳光峰科技股份有限公司 | Projection reflection screen paint and preparation method thereof |
| CN112940575A (en) * | 2021-03-15 | 2021-06-11 | 董璇 | Metallic light-resistant projection imaging paint and preparation method thereof |
-
1995
- 1995-12-20 JP JP33141695A patent/JP3825073B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08231904A (en) | 1996-09-10 |
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