JP2016009150A - Translucent projection screen - Google Patents
Translucent projection screen Download PDFInfo
- Publication number
- JP2016009150A JP2016009150A JP2014130989A JP2014130989A JP2016009150A JP 2016009150 A JP2016009150 A JP 2016009150A JP 2014130989 A JP2014130989 A JP 2014130989A JP 2014130989 A JP2014130989 A JP 2014130989A JP 2016009150 A JP2016009150 A JP 2016009150A
- Authority
- JP
- Japan
- Prior art keywords
- light
- projection screen
- layer portion
- transmissive
- thin film
- 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
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Abstract
Description
本発明は透過投映スクリーン用の樹脂製シートに関し、特にスクリーン背面からスクリーン裏面にプロジェクター投映した画像をスクリーンの表面に透過投映させるデジタルディスプレイ及びデジタルサイネージにおいて、明るい環境での透過投映像の発色鮮明性（高いコントラスト効果）とホットスポット抑止効果に優れ、しかも帯電防止性及び遮熱性とを有するスクリーンで、特にショーウインドーのガラス面に装着して用いる投映スクリーンに関する。 The present invention relates to a resin sheet for a transmissive projection screen, and in particular, the color clarity of a transmissive projection image in a bright environment in a digital display and digital signage that transmissively projects an image projected from the back of the screen to the back of the screen on the surface of the screen. The present invention relates to a projection screen which is excellent in (high contrast effect) and hot spot suppression effect, and has antistatic properties and heat shielding properties, and is particularly used by being mounted on a glass surface of a show window.
デジタルデータをコンピュータ経由で画像表示、動画表示するデジタルサイネージ（電子看板）が普及している。デジタルサイネージはポスターや看板などの具現物を必要としないため、リアルタイムかつ低コストで自由自在の演出表現を可能とする。この一形態に、スクリ−ンの背面からプロジェクター投映する方法があり、特にショーウインドーのような大型ヴィジュアルメディアに適している。このような投映スクリーンには適度な透光性と光拡散性を兼備する透過型スクリーンを用いることで、プロジェクター光源を隠蔽しながらの鮮明な大画面映像や動画の表示を可能とする。 Digital signage (digital signage) that displays digital data as images and moving images via a computer has become widespread. Digital signage does not require realization such as posters and billboards, so it enables real-time and low-cost freedom of expression. One form of this is a method of projecting a projector from the back of the screen, which is particularly suitable for large visual media such as a show window. By using a transmissive screen having both appropriate translucency and light diffusibility for such a projection screen, it is possible to display a clear large screen image or moving image while hiding the projector light source.
このような透過型スクリーンで、背面に設置したプロジェクターの光源位置が透けて見えず、かつプロジェクターからの映像を鮮明に写すスクリーンの具体例として、プラスチックフィルムを支持体として、これに光拡散性粒子（無機顔料）を含む光拡散層を設けてなるヘーズ８０％以上、全光線透過率６０％以上、鏡面光沢度１０％以下である透過型スクリーン（特許文献１）、光拡散体を通して光源を見たときに光源光の色調がシフトすることを抑え、光拡散体を通したときに白色光源が着色して見えることをなくすようなスクリーンとして、透明樹脂と、透明樹脂とは屈折率の異なる特定条件を満たす球状微粒子とから形成される透過型スクリーン（特許文献２）、ホットスポット（プロジェクター光源の映り込み）の発生を防止しつつ、十分なコントラストおよび輝度を得ることができるスクリーンとして、ヘーズが６５％以上である前方散乱性フィルム上に、平均粒子径６μｍ超〜１２μｍの黒色ビーズとバインダー樹脂とを含む黒色層を有してなる透過型スクリーン（特許文献３）などが開示されている。 As a specific example of such a transmissive screen in which the light source position of the projector installed on the back side cannot be seen through and the image from the projector is clearly displayed, a plastic film is used as a support, and light diffusing particles are applied to this. A light transmission layer (Patent Document 1) having a haze of 80% or more, a total light transmittance of 60% or more, and a specular gloss of 10% or less provided with a light diffusion layer containing (inorganic pigment), and a light source through the light diffuser. As a screen that suppresses the color tone of the light source light from shifting and eliminates the appearance of the white light source appearing colored when it passes through the light diffuser, the transparent resin and the transparent resin have different refractive indexes. Prevents generation of transmission screens (Patent Document 2) and hot spots (projection light source reflection) formed from spherical fine particles that satisfy the conditions. As a screen capable of obtaining sufficient contrast and brightness, a black layer containing black beads having an average particle diameter of more than 6 μm to 12 μm and a binder resin is provided on a forward scattering film having a haze of 65% or more. A transmission type screen (Patent Document 3) is disclosed.
昨今では大型ヴィジュアルメディアを活用し、より人目を惹く広告演出や集客効果を得るために、特許文献１〜３のようなスクリーンをショーウインドーのガラス内側に貼着して通行人に向けて動画などをプロジェクター投映するデジタルディスプレイやデジタルサイネージが注目されている。この手段に適する大型ショーウインドーは、繁華街、地下街、ショッピングモール、アミューズメント施設、イベント会場、駅舎や空港など屋内外を問わないが、特に昼間の繁華街ではショーウインドーに直射日光が射して眩く反射したり、プロジェクター投映画像の階調に白飛びを起こしたりするなど、夜間に効果を発揮する特許文献１や２のスクリーンも昼間の環境では発色鮮明性に精彩を欠いていた。また、大型ショーウインドーでは夏場の強い陽射しが店内温度を上昇させる難点があるが、特許文献１〜３のスクリーンでは遮熱効果を有するものではなく、しかも帯電防止性能なども有さないことで、静電気で埃や塵がスクリーン表面に付着することでキラキラした乱反射を起こし、投映画像にチラつきの支障を生じることがある。 Nowadays, in order to use large-scale visual media and get more eye-catching advertising effects and attracting customers, screens such as Patent Documents 1 to 3 are attached to the inside of the glass of the show window to show videos and others to passersby. Digital displays and digital signage that are projected by projectors are attracting attention. Large-scale show windows suitable for this method can be used indoors and outdoors such as downtown, underground malls, shopping malls, amusement facilities, event venues, station buildings, and airports. Also, the screens of Patent Documents 1 and 2 that are effective at night, such as causing the gradation of the projected image to be overexposed, lacked the vividness of the color vividness in the daytime environment. In addition, in large-scale show windows, there is a problem that strong sunlight in the summer increases the temperature in the store, but the screens of Patent Documents 1 to 3 do not have a heat shielding effect and do not have antistatic performance, etc. When dust or dust adheres to the surface of the screen, it may cause irregular diffuse reflection, which may cause flickering in the projected image.
従って、明るい環境での透過投映像の発色鮮明性と、ホットスポット抑止効果に優れ、しかも帯電防止性及び遮熱性とを有する背面投映用スクリーンが存在すれば、それを大型ショーウインドーに使用することで、昼夜を問わずプロジェクター投映による画像や映像を通行人に安定発信するデジタルディスプレイやデジタルサイネージが可能となり、特に夏場の昼間において、大型ショーウインドーに射し込む日射熱を効果的に反射できれば店内冷房の効率の改善が期待できる。このようなデジタルディスプレイやデジタルサイネージによれば、ショーウインドー以外でも天井面や壁面にも映像や動画を投映するビジュアル演出も可能とする。またドーム状膜構造物の一部または全部を、織物を基材として含む透過型スクリーンで構成し、多数のプロジェクターを使用することでドーム状膜構造物内部壁面に映像や動画を３６０°全方向投映し、さらに透過画像や動画をドーム状膜構造物外部壁面にも同時現出させるようなデジタルディスプレイ及びデジタルサイネージを可能とする。 Therefore, if there is a rear-projection screen that has excellent color clarity of transmitted images in a bright environment and an excellent anti-hot spot effect, as well as antistatic and heat-shielding properties, it can be used in large-scale show windows. , Digital display and digital signage that can stably transmit images and images projected by projectors regardless of day or night are possible, especially in the daytime in summer, if the solar heat that shines on large show windows can be effectively reflected, Improvement can be expected. According to such a digital display and digital signage, it is possible to produce a visual effect by projecting video and moving images on the ceiling surface and wall surface in addition to the show window. In addition, a part or all of the dome-shaped membrane structure is composed of a transmissive screen that includes a woven fabric as a base material, and images and videos can be displayed in all directions on the inner wall surface of the dome-shaped membrane structure by using multiple projectors. It enables digital display and digital signage to project and further display a transmission image and a moving image on the outer wall surface of the dome-shaped membrane structure.
本発明は、特にスクリーン背面からスクリーン裏面にプロジェクター投映した画像をスクリーンの表面に透過投映させるデジタルディスプレイ及びデジタルサイネージにおいて、明るい環境での透過投映像の発色鮮明性（高いコントラスト効果）とホットスポット抑止効果に優れ、しかも帯電防止性及び遮熱性とを有するもので、特にショーウインドーのガラス面への装着に適した投映スクリーンを提供するものである。 The present invention is particularly suitable for digital display and digital signage that projects the image projected by the projector from the back of the screen to the back of the screen on the surface of the screen, and the color clarity (high contrast effect) and hot spot suppression of the transmitted image in a bright environment. The present invention provides a projection screen that is excellent in effect, has antistatic properties and heat shielding properties, and is particularly suitable for mounting on a glass surface of a show window.
上記課題を解決するために、本発明者らが種々検討を行った結果、熱可塑性樹脂フィルムに金属酸化物薄膜層が設けられた透光性導電層部と、この透光性導電層部に積層された光拡散層部を有する光透過性積層体において、光拡散層部が、熱可塑性樹脂及び光拡散性粒子とを含有し、この光拡散性粒子の含有率を１０〜６０質量％とすることにより、特に明るい使用環境での透過投映像の発色鮮明性（高いコントラスト効果）と、ホットスポット抑止効果に優れ、デジタルディスプレイ及びデジタルサイネージに適した透過投映スクリーンが得られ、しかも帯電防止性及び遮熱性が同時に発現されることで、特にショーウインドーのガラス面装着に適した投映スクリーンが得られることを見出して本発明を完成するに至った。 As a result of various studies conducted by the present inventors in order to solve the above problems, a light-transmitting conductive layer portion in which a metal oxide thin film layer is provided on a thermoplastic resin film, and the light-transmitting conductive layer portion In the light transmissive laminate having the laminated light diffusing layer portion, the light diffusing layer portion contains a thermoplastic resin and light diffusing particles, and the content of the light diffusing particles is 10 to 60% by mass. This makes it possible to obtain a transparent projection screen suitable for digital displays and digital signage with excellent color clarity (high contrast effect) and hot spot suppression effect, especially in bright usage environments. In addition, the present inventors have found that a projection screen particularly suitable for mounting on a glass surface of a show window can be obtained by simultaneously exhibiting heat shielding properties.
すなわち本発明の透過投映スクリーンは、熱可塑性樹脂フィルムに金属酸化物薄膜層が設けられた透光性導電層部と、この透光性導電層部に積層された光拡散層部を有する光透過性積層体であって、前記光拡散層部が、熱可塑性樹脂及び光拡散性粒子とを含有し、この光拡散性粒子の含有率を１０〜６０質量％とすることが好ましい。これによって特に明るい使用環境での透過投映像の発色鮮明性と、ホットスポット抑止効果に優れ、デジタルディスプレイ及びデジタルサイネージに適した透過投映スクリーンが得られ、しかも帯電防止性及び遮熱性を同時に有することで、特にショーウインドーのガラス面への装着に適した投映スクリーンを得ることができる。 That is, the transmissive projection screen of the present invention has a light transmissive conductive layer portion in which a metal oxide thin film layer is provided on a thermoplastic resin film, and a light diffusing layer portion laminated on the light transmissive conductive layer portion. The light diffusing layer part preferably contains a thermoplastic resin and light diffusing particles, and the content of the light diffusing particles is preferably 10 to 60% by mass. This makes it possible to obtain a transparent projection screen that is excellent in color clarity and transparency in hot-transmission images, especially in bright usage environments, and is effective in suppressing digital hotspots, and is suitable for digital displays and digital signage. Thus, it is possible to obtain a projection screen particularly suitable for mounting on the glass surface of a show window.
本発明の透過投映スクリーンは、前記金属酸化物薄膜層が、ＷＯ３（酸化タングステン）、Ｉｎ２Ｏ３（酸化インジウム）、ＺｒＯ２（酸化ジルコニウム）、ＺｎＯ（酸化亜鉛）、ＳｎＯ２（酸化スズ）、Ｓｂ２Ｏ３（三酸化アンチモン）、及びＳｂ２Ｏ５（五酸化アンチモン）から選ばれた１種以上の金属酸化物ゾル（平均粒子径５ｎｍ〜３０ｎｍ）により形成された薄膜層であることが好ましい。これによって透過投映スクリーンに帯電防止性及び遮熱性を同時付与することを可能とする。 In the transmissive projection screen of the present invention, the metal oxide thin film layer is formed of WO 3 (tungsten oxide), In 2 O 3 (indium oxide), ZrO 2 (zirconium oxide), ZnO (zinc oxide), SnO 2 (tin oxide). ), Sb 2 O 3 (antimony trioxide), and Sb 2 O 5 (antimony pentoxide), a thin film layer formed of one or more metal oxide sols (average particle size of 5 nm to 30 nm). It is preferable. This makes it possible to simultaneously impart antistatic properties and heat shielding properties to the transmissive projection screen.
本発明の透過投映スクリーンは、前記透光性導電層部の表面抵抗値（測定方法：JIS K6911、測定条件：湿度３０％ＲＨ−温度２３℃）が、１．０Ｅ＋１２Ω未満であることが好ましい。これによって透過投映スクリーンに対する、塵や埃の静電気付着を抑止し、塵や埃によるキラキラした乱反射ノイズの無い投映画像を常時維持することを可能とする。 In the transmissive projection screen of the present invention, the translucent conductive layer portion preferably has a surface resistance value (measurement method: JIS K6911, measurement condition: humidity 30% RH−temperature 23 ° C.) of less than 1.0E + 12Ω. As a result, electrostatic adhesion of dust and dirt to the transmissive projection screen can be suppressed, and a projection image free from irregular reflection noise caused by dust and dirt can be maintained at all times.
本発明の透過投映スクリーンは、前記透光性導電層部または前記光拡散層部の何れか一方に、ドットパターン印刷層を含むことが好ましい。このドットパターンの存在が、背面投映されたカラー画像のコントラストを脳内で強調する視覚作用を促し、特に明るい使用環境でも透過投映像の発色鮮明性に優れ、しかもホットスポット抑止効果にもより優れた透過投映スクリーンを得ることができる。 It is preferable that the transmissive projection screen of the present invention includes a dot pattern printing layer in one of the translucent conductive layer portion and the light diffusion layer portion. The presence of this dot pattern promotes the visual effect of enhancing the contrast of the color image projected on the back in the brain, and is excellent in the clearness of the color of the transmitted projection image even in a bright usage environment, and also in the hot spot suppression effect. A transparent projection screen can be obtained.
本発明の透過投映スクリーンは、前記光拡散性粒子が、５〜３０μｍの平均粒子径を有する球状中実粒子、及び／または球状中空粒子であることが好ましい。これによってホットスポット抑止効果に優れた透過投映スクリーンを得ることができる。 In the transmission projection screen of the present invention, the light diffusing particles are preferably spherical solid particles and / or spherical hollow particles having an average particle diameter of 5 to 30 μm. As a result, it is possible to obtain a transmission projection screen having an excellent hot spot suppression effect.
本発明の透過投映スクリーンは、前記光透過性積層体が光透過性織布を芯材に含むことが好ましい。これによってドーム状膜構造物の一部または全部を、織物を基材として含む透過型スクリーンで構成することで建築構造物としての強度及び耐久性を満足し、多数のプロジェクターを使用することでドーム状膜構造物内部壁面に映像や動画を３６０°全方向投映し、さらに透過画像や動画をドーム状膜構造物外部壁面にも同時現出させるようなデジタルディスプレイ及びデジタルサイネージを可能とする。 In the transmissive projection screen of the present invention, it is preferable that the light transmissive laminate includes a light transmissive woven fabric as a core material. As a result, a part or all of the dome-shaped membrane structure is composed of a transmissive screen including a woven fabric as a base material, thereby satisfying the strength and durability of the building structure. This enables a digital display and digital signage to project images and moving images in 360 ° in all directions on the inner wall surface of the film-like film structure, and to simultaneously display the transmitted images and moving images on the outer wall surface of the dome-shaped film structure.
本発明によれば、明るい環境での透過投映像の発色鮮明性（高いコントラスト効果）とホットスポット抑止効果に優れ、特にショーウインドーのガラス面装着に適した投映スクリーンを得ることができ、背後からプロジェクター投映するだけで、容易にデジタルディスプレイやデジタルサイネージなどの表現を可能とし、しかも帯電防止性及び遮熱性を有することで、透過投映スクリーンに対する、塵や埃の静電気付着を抑止し、塵や埃によるキラキラした乱反射ノイズの無い投映画像を常時維持することを可能とする。そして夏季の強い陽射しにも拘らず、店内温度の上昇を抑止するので冷房効率が効果的に改善される。従って本発明による透過投映スクリーンは、ウインドーディスプレイやＰＯＰ広告看板などの商業的利用は勿論、導電性を有することで、アミューズメント施設、屋外イベント会場などでの映画やアニメーションの壁面投映、音楽プロモーションビデオやライブ映像などの壁面投映などにも利用できる。また、インターネット通信との連動によるデジタルサイネージの利用として、ニュース速報、交通情報、災害時の緊急避難誘導のリアルタイム表示にも期待できる。 According to the present invention, it is possible to obtain a projection screen excellent in color clarity (high contrast effect) and hot spot suppression effect of a transparent projection image in a bright environment, and particularly suitable for mounting on a glass surface of a show window. By simply projecting, digital displays and digital signage can be easily expressed, and it has antistatic and heat shielding properties to suppress electrostatic adhesion of dust and dust to the transmissive projection screen. This makes it possible to always maintain a projected image free from sparkling diffuse reflection noise. In spite of the strong sunlight in the summer, the cooling efficiency is effectively improved because the rise in the store temperature is suppressed. Therefore, the transparent projection screen according to the present invention has electrical conductivity as well as commercial use such as a window display and a POP advertising billboard, so that it can be projected on wall surfaces of movies and animations at amusement facilities, outdoor event venues, music promotion videos, etc. It can also be used for wall projection such as live video. In addition, the use of digital signage in conjunction with Internet communication can be expected to provide news bulletins, traffic information, and real-time display of emergency evacuation guidance in the event of a disaster.
本発明の透過投映スクリーンは、熱可塑性樹脂フィルムに金属酸化物薄膜層が設けられた透光性導電層部と、この透光性導電層部に積層された光拡散層部を有する光透過性積層体である。他の光透過性積層体の態様として、１）金属酸化物薄膜層に対する透明保護層を有する「透明保護層／透光性導電層部／光拡散層部」、２）ドットパターン印刷層を有する「ドットパターン印刷層／透光性導電層部／光拡散層部」、「透光性導電層部／ドットパターン印刷層／光拡散層部」、３）光透過性織布を芯材に含む「透光性導電層部／光拡散層部／光透過性織布」、「透光性導電層部／光拡散層部／光透過性織布」、「ドットパターン印刷層／透光性導電層部／光拡散層部／光透過性織布」、「透光性導電層部／ドットパターン印刷層／光拡散層部／光透過性織布」、などであり、これら１）〜３）のすべての態様において、透光性導電層部は「金属酸化物薄膜層／熱可塑性樹脂フィルム」、「熱可塑性樹脂フィルム／金属酸化物薄膜層」、「金属酸化物薄膜層／熱可塑性樹脂フィルム／金属酸化物薄膜層」の３態様を含む。また、光透過性織布の露出面には更に熱可塑性樹脂による透明層、または光拡散層が形成されていてもよい。 The transmissive projection screen according to the present invention has a light transmissive conductive layer portion in which a metal oxide thin film layer is provided on a thermoplastic resin film, and a light transmissive layer portion laminated on the light transmissive conductive layer portion. It is a laminate. As another aspect of the light transmissive laminate, 1) “transparent protective layer / translucent conductive layer portion / light diffusion layer portion” having a transparent protective layer for the metal oxide thin film layer, and 2) having a dot pattern printing layer “Dot pattern printed layer / translucent conductive layer portion / light diffusing layer portion”, “Translucent conductive layer portion / dot pattern printed layer / light diffusing layer portion”, 3) Light transmissive woven fabric included in core material “Translucent conductive layer portion / light diffusion layer portion / light transmissive woven fabric”, “Translucent conductive layer portion / light diffusing layer portion / light transmissive woven fabric”, “Dot pattern printed layer / Translucent conductive” Layer part / light diffusing layer part / light transmissive woven cloth ”,“ light transmissive conductive layer part / dot pattern printing layer / light diffusing layer part / light transmissive woven cloth ”, etc., and these 1) to 3) In all of the embodiments, the translucent conductive layer portion is composed of “metal oxide thin film layer / thermoplastic resin film”, “thermoplastic resin film / metal oxide thin film”. Layer "includes third aspect of the" metal oxide thin film layer / thermoplastic resin film / metal oxide thin film layer. " Further, a transparent layer or a light diffusion layer made of a thermoplastic resin may be further formed on the exposed surface of the light-transmitting woven fabric.
熱可塑性樹脂フィルムは、カレンダー成型機またはＴダイス押出成型機などの公知のフィルム・シート製造機により、厚さ０．１ｍｍ〜１．０ｍｍの範囲内で製造された光透過性ものが使用できる。熱可塑性樹脂として、特に環状オレフィンコポリマーを用いることが光学的透明性に優れ好ましい。このような環状オレフィンコポリマーは、エチレン及び／又は炭素数３〜２０のα−オレフィン化合物（例えばプロピレン、１−ブテン、１−ペンテン、１−ヘキセンなど）のモノマーと、ノルボルネン、テトラシクロドデセンなどのシクロオレフィンモノマーとの共重合体による非結晶性ポリマー（シクロオレフィンモノマー含有量６０〜８５質量％）である。また、上記モノマーに加え、ビニルナフタレン、ビニルアントラセン、ビニルフェナンスレン、ビニルフルオランテン、ビニルピレンなどの第３成分モノマーを含むコポリマーであってもよい。また、熱可塑性樹脂フィルムとしては、軟質〜半硬質塩化ビニル樹脂、塩化ビニル系共重合体樹脂、オレフィン樹脂（ＰＥ，ＰＰなど）、オレフィン系共重合体樹脂（ＥＶＡ，ＥＭＭＡなど）、ウレタン樹脂、ウレタン系共重合体樹脂、アクリル樹脂、アクリル系共重合体樹脂、酢酸ビニル樹脂、酢酸ビニル系共重合体樹脂、スチレン樹脂、スチレン系共重合体樹脂、ポリエステル樹脂（ＰＥＴ，ＰＥＮ，ＰＢＴなど）、ポリエステル系共重合体樹脂、フッ素含有共重合体樹脂、ポリカーボネート、ポリアミド、ポリエーテル、ポリエステルアミド、ポリエーテルエステルなどによるフィルムまたはシートが使用できるが、本発明の透過投映スクリーンには軟質〜半硬質塩化ビニル樹脂フィルムを用いることが汎用性において適している。 As the thermoplastic resin film, a light-transmitting film manufactured within a thickness range of 0.1 mm to 1.0 mm by a known film / sheet manufacturing machine such as a calendar molding machine or a T-die extrusion molding machine can be used. It is particularly preferable to use a cyclic olefin copolymer as the thermoplastic resin because of its excellent optical transparency. Such a cyclic olefin copolymer includes monomers of ethylene and / or an α-olefin compound having 3 to 20 carbon atoms (for example, propylene, 1-butene, 1-pentene, 1-hexene, etc.), norbornene, tetracyclododecene, and the like. It is a non-crystalline polymer (cycloolefin monomer content 60-85 mass%) by the copolymer with the cycloolefin monomer. In addition to the above monomers, a copolymer containing a third component monomer such as vinyl naphthalene, vinyl anthracene, vinyl phenanthrene, vinyl fluoranthene, or vinyl pyrene may be used. The thermoplastic resin film includes soft to semi-rigid vinyl chloride resin, vinyl chloride copolymer resin, olefin resin (PE, PP, etc.), olefin copolymer resin (EVA, EMMA, etc.), urethane resin, Urethane copolymer resin, acrylic resin, acrylic copolymer resin, vinyl acetate resin, vinyl acetate copolymer resin, styrene resin, styrene copolymer resin, polyester resin (PET, PEN, PBT, etc.), A film or sheet of polyester copolymer resin, fluorine-containing copolymer resin, polycarbonate, polyamide, polyether, polyesteramide, polyetherester, etc. can be used, but the transmission projection screen of the present invention is flexible to semi-rigid chloride. Use of a vinyl resin film is suitable for versatility.
金属酸化物薄膜層は、ＷＯ３（酸化タングステン）、Ｉｎ２Ｏ３（酸化インジウム）、ＺｒＯ２（酸化ジルコニウム）、ＺｎＯ（酸化亜鉛）、ＳｎＯ２（酸化スズ）、Ｓｂ２Ｏ３（三酸化アンチモン）、及びＳｂ２Ｏ５（五酸化アンチモン）から選ばれた１種以上の金属酸化物ゾル（平均粒子径５ｎｍ〜３０ｎｍ）により形成されたゾルゲル薄膜であり、金属酸化物薄膜層は複数種の金属酸化物ゾルの積層により形成された複層構造であってもよい。この金属酸化物薄膜層の存在によって本発明の透過投映スクリーンの表面抵抗値（測定方法：JIS K6911、測定条件：湿度３０％ＲＨ−温度２３℃）が、１．０Ｅ＋１２Ω未満の帯電防止性が付与され、スクリーン表面に塵や埃が静電付着することを抑止し、それによって塵や埃の乱反射が起こり難い環境とすることで美麗な投映画面が常時維持される。これらの金属酸化物ゾルにはゾルゲル薄膜層の耐摩耗性を向上させるためにアルコキシシラン化合物を含み、アルコキシシラン化合物が加水分解、重縮合したポリシロキサン化合物をバインダー成分に含むことが好ましく、アルコキシシラン化合物には、一般式：ＹｎＳｉＸ４−ｎ（ｎ＝１〜３）で表されるシランカップリング剤の１種または２種以上の加水分解縮合物、共加水分解化合物が使用できる。この一般式においてＹは例えば、アルキル基、フルオロアルキル基、ビニル基、メルカプト基、アミノ基またはエポキシ基であり、Ｘは例えば、ハロゲン、メトキシル基、エトキシル基、またはアセチル基である。具体的には、アルキル基置換トリクロルシラン、アルキル基置換トリブロムシラン、アルキル基置換トリメトキシシラン、アルキル基置換トリエトキシシラン、アルキル基置換トリイソプロポキシシラン、アルキル基置換トリ-ｔ-ブトキシシランなどが挙げられ、アルキル基は、メチル基、エチル基、ｎ−プロピル基、ｎ−ヘキシル基、ｎ−デシル基、ｎ−オクタデシル基、フェニル基である。また、上記アルキル置換シラン化合物のアルキル基をトリフルオロプロピル基、ビニル基、γ−メタアクリロキシプロピル基、γ−アミノプロピル基、γ−メルカプトプロピル基などに変えたシランカップリング剤であってもよい。 The metal oxide thin film layer is composed of WO 3 (tungsten oxide), In 2 O 3 (indium oxide), ZrO 2 (zirconium oxide), ZnO (zinc oxide), SnO 2 (tin oxide), Sb 2 O 3 (trioxide). Antimony), and a sol-gel thin film formed of one or more metal oxide sols (average particle diameter of 5 nm to 30 nm) selected from Sb 2 O 5 (antimony pentoxide). A multilayer structure formed by stacking metal oxide sols may be used. The presence of this metal oxide thin film layer imparts antistatic properties with a surface resistance value (measuring method: JIS K6911, measuring condition: humidity 30% RH-temperature 23 ° C.) of the transmission projection screen of the present invention of less than 1.0E + 12Ω. In addition, by preventing dust and dirt from electrostatically adhering to the surface of the screen, and thereby creating an environment in which dust and dust are less likely to be diffusely reflected, a beautiful projection screen is always maintained. These metal oxide sols contain an alkoxysilane compound in order to improve the wear resistance of the sol-gel thin film layer, and it is preferable that the binder component contains a polysiloxane compound obtained by hydrolysis and polycondensation of the alkoxysilane compound. As the compound, one kind or two or more kinds of hydrolyzed condensates and cohydrolyzed compounds of a silane coupling agent represented by a general formula: Y n SiX 4-n (n = 1 to 3) can be used. In this general formula, Y is, for example, an alkyl group, a fluoroalkyl group, a vinyl group, a mercapto group, an amino group, or an epoxy group, and X is, for example, a halogen, a methoxyl group, an ethoxyl group, or an acetyl group. Specifically, alkyl group substituted trichlorosilane, alkyl group substituted tribromosilane, alkyl group substituted trimethoxysilane, alkyl group substituted triethoxysilane, alkyl group substituted triisopropoxysilane, alkyl group substituted tri-t-butoxysilane, etc. The alkyl group is a methyl group, an ethyl group, an n-propyl group, an n-hexyl group, an n-decyl group, an n-octadecyl group, or a phenyl group. Moreover, even if it is the silane coupling agent which changed the alkyl group of the said alkyl substituted silane compound into the trifluoropropyl group, the vinyl group, (gamma) -methacryloxypropyl group, (gamma) -aminopropyl group, (gamma) -mercaptopropyl group, etc. Good.
金属酸化物薄膜層には、ゾルゲル薄膜層の耐摩耗性と帯電防止性を向上させるためにコロイダルシリカ（ＳｉＯ２）を含むことができる。コロイダルシリカとして水分散媒のシリカゾル、または有機系溶剤分散媒のシリカゾルの何れかで、平均粒子径５ｎｍ〜３０ｎｍのＳｉＯ２を金属酸化物薄膜層に対して固形分５〜３５重量％で含有することができる。 The metal oxide thin film layer may contain colloidal silica (SiO 2 ) in order to improve the wear resistance and antistatic properties of the sol-gel thin film layer. As colloidal silica, either silica sol of an aqueous dispersion medium or silica sol of an organic solvent dispersion medium, SiO 2 having an average particle size of 5 nm to 30 nm is contained at a solid content of 5 to 35% by weight with respect to the metal oxide thin film layer. be able to.
金属酸化物薄膜層を形成する方法としては、例えば、グラビアコート法、マイクログラビアコート法、コンマコート法、ロールコート法、リバースロールコート法、バーコート法、キスコート法、フローコート法などの塗工方法が好適である。上記塗工による金属酸化物薄膜層の厚みに特に制限はないが、０．１μｍ〜２０μｍが好ましい。薄膜層の厚みが０．１μｍ未満だと帯電防止性及び遮熱性が不十分となることがあり、薄膜層の厚みが２０μｍを越えると着色を伴ったり、スクリーンを撓めたときに薄膜層にマイクロクラックを生じたりするなど、投映画像の画質を悪くすることがある。 Examples of the method for forming the metal oxide thin film layer include a gravure coating method, a micro gravure coating method, a comma coating method, a roll coating method, a reverse roll coating method, a bar coating method, a kiss coating method, and a flow coating method. The method is preferred. Although there is no restriction | limiting in particular in the thickness of the metal oxide thin film layer by the said coating, 0.1 micrometer-20 micrometers are preferable. If the thickness of the thin film layer is less than 0.1 μm, the antistatic property and the heat shielding property may be insufficient, and if the thickness of the thin film layer exceeds 20 μm, the thin film layer may be colored or bent when the screen is bent. The image quality of the projected image may be deteriorated, such as causing micro cracks.
また、金属酸化物薄膜層の表面には塗膜またはフィルムによる透明保護層を設けることで、金属酸化物薄膜の摩耗劣化や腐食劣化を抑止し、帯電防止性及び熱線反射による遮熱効果を長期安定維持させることが可能である。透明保護層を塗膜とする場合は上述の塗工方法の何れかにより膜厚１μｍ〜１００μｍの範囲とすることが好ましい。また透明保護層には必要に応じて光拡散性粒子を１０〜６０質量％含有させることができる。透明保護層には、アクリル系樹脂、フッ素含有モノマーＡとフッ素含有モノマーＢとの共重合樹脂、アクリル−シリコン共重合樹脂、アクリルーフッ素共重合樹脂、アクリル−ウレタン共重合樹脂、アクリル系樹脂とフッ素系共重合樹脂とのブレンド、アクリロイル基を末端に有する光重合性樹脂、及びこれらにシリカ微粒子、コロイダルシリカ、オルガノシリケートを含んでなる防汚性に優れた樹脂層を使用し、硬化成分としてポリイソシアネート化合物、オキサゾリン化合物、アジリジン化合物、アクリレート化合物、エポキシ化合物、及びシランカップリング剤などの反応性化合物を防汚性樹脂に対して１〜２０質量％含有することが好ましい。また必要に応じて帯電防止剤、紫外線吸収剤、抗菌剤、防黴剤などを含むことができる。また金属酸化物薄膜層の表面には、光触媒性無機材料（例えば光触媒性酸化チタン・光触媒性酸化タングステン）を含む防汚層を設けてもよく、これによって油性汚れの水洗い除去性を向上させることができる。 In addition, by providing a transparent protective layer with a coating film or film on the surface of the metal oxide thin film layer, the wear and corrosion deterioration of the metal oxide thin film is suppressed, and the anti-static property and the heat shielding effect by heat ray reflection are prolonged. It is possible to keep it stable. When using a transparent protective layer as a coating film, it is preferable to set it as the range of a film thickness of 1 micrometer-100 micrometers by either of the above-mentioned coating methods. The transparent protective layer may contain 10 to 60% by mass of light diffusing particles as necessary. For the transparent protective layer, acrylic resin, copolymer resin of fluorine-containing monomer A and fluorine-containing monomer B, acrylic-silicon copolymer resin, acrylic-fluorine copolymer resin, acrylic-urethane copolymer resin, acrylic resin and As a curing component, a blend with a fluorinated copolymer resin, a photopolymerizable resin having an acryloyl group at its end, and a resin layer with excellent antifouling properties comprising silica fine particles, colloidal silica, and organosilicate are used. It is preferable to contain 1-20 mass% of reactive compounds, such as a polyisocyanate compound, an oxazoline compound, an aziridine compound, an acrylate compound, an epoxy compound, and a silane coupling agent, with respect to the antifouling resin. Moreover, an antistatic agent, a ultraviolet absorber, an antibacterial agent, an antifungal agent, etc. can be included as needed. In addition, an antifouling layer containing a photocatalytic inorganic material (for example, photocatalytic titanium oxide / photocatalytic tungsten oxide) may be provided on the surface of the metal oxide thin film layer, thereby improving the water washing removal property of oily dirt. Can do.
透光性導電層部または光拡散層部の何れか一方に、ドットパターン印刷層を含むことが好ましい。ドットパターンは、１）黒色系ドットを島とし、このドット以外のスペースを無色透明の海（光透過性）とする海島関係、あるいは、２）無色透明系ドット（光透過性）を島とし、このドット以外のスペースを黒色系の海とする反転ドットの何れであってもよい。このようなドットパターンの存在が、背面投映されたカラー画像のコントラストを脳内で強調する視覚作用を促し、特に明るい使用環境でも透過投映像の発色鮮明性を良好なものとする。ドットパターン印刷層は、透光性導電層部の表面、内部、底部、光拡散層部の表面または裏面の何れに形成されていてもその効果に遜色ない。表面に形成される態様は「ドットパターン印刷層／透光性導電層部／光拡散層部」、内部に形成される態様は「透光性導電層部／ドットパターン印刷層／光拡散層部」、底部に形成される態様は「透光性導電層部／光拡散層部／ドットパターン印刷層」である。これらのすべての態様において、透光性導電層部とは「金属酸化物薄膜層／熱可塑性樹脂フィルム」、「熱可塑性樹脂フィルム／金属酸化物薄膜層」、「金属酸化物薄膜層／熱可塑性樹脂フィルム／金属酸化物薄膜層」の３態様を含む。ドットは円形〜略円形であることが好ましい。三角形や四角形などでも構わないが得られるコントラスト効果に特段の優位性を発現するものではない。またドットパターンは規則的とし、左右に位置するドット同士の距離を一定とし、かつ、上下に位置するドット同士の距離を一定とすることが好ましい。タテまたはヨコに並ぶドット列は、隣接同士が水平・垂直に配置されたもの、あるいは隣接同士がドット間距離の半分の距離でズレた位置関係に配置されたもののいずれであってもよい。ドット径はスクリーンのサイズにもよるが、０．０５ｍｍ〜１．０ｍｍ、好ましくは０．１ｍｍ〜０．５ｍｍである。また黒色ドット（または反転ドット）は、カラーインデックス (Colour Index International 略称 C.I. )のPigment Black群の６、７、１１、２６などの黒色色素が使用できる。また市販の黒インキをメジウムや溶剤などで希釈して低濃度使用することによって、可視光線透過率５〜３０％程度の光透過性を付与したものが好ましい。黒インキは、導電性カーボンブラック、複合酸化物系黒色顔料、酸化鉄ブラック顔料、酸化チタン系黒色顔料、アゾメチンアゾ系黒色顔料、ペリレン系黒色顔料の何れか１種以上を含有するもの、ポリアニリン、ポリチオフェン、ポリピロールなどの共役系高分子を含有する導電性インキなどである。ドットパターン印刷層は、グラビア印刷、スクリーン（シルク）印刷、インクジエット印刷、転写印刷など公知の印刷方法により形成が可能である。 It is preferable that a dot pattern printing layer is included in either one of the translucent conductive layer portion or the light diffusion layer portion. The dot pattern is 1) a sea-island relationship with black dots as islands, and a space other than these dots as colorless and transparent sea (light transmissive), or 2) colorless transparent dots (light transmissive) as islands, Any of the inverted dots in which the space other than the dots is a black sea may be used. The presence of such a dot pattern promotes the visual effect of enhancing the contrast of the color image projected on the back in the brain, and makes the color transparency of the transmitted projection image good even in a bright usage environment. Even if the dot pattern printing layer is formed on the front surface, the inside, the bottom portion, the front surface or the back surface of the light diffusing layer portion of the translucent conductive layer portion, the effect is inferior. The form formed on the surface is “dot pattern printed layer / translucent conductive layer part / light diffusion layer part”, and the form formed inside is “translucent conductive layer part / dot pattern printed layer / light diffusion layer part” The form formed on the bottom is “translucent conductive layer portion / light diffusion layer portion / dot pattern print layer”. In all these embodiments, the translucent conductive layer portion is “metal oxide thin film layer / thermoplastic resin film”, “thermoplastic resin film / metal oxide thin film layer”, “metal oxide thin film layer / thermoplastic”. 3 modes of “resin film / metal oxide thin film layer” are included. The dots are preferably circular to substantially circular. Although it may be a triangle or a quadrangle, it does not exhibit a particular advantage in the contrast effect obtained. Further, it is preferable that the dot pattern is regular, the distance between the dots positioned on the left and right is constant, and the distance between the dots positioned on the top and bottom is constant. The dot rows arranged vertically or horizontally may be either one in which the adjacent ones are arranged horizontally and vertically, or one in which the adjacent ones are arranged in a positional relationship shifted by half the distance between the dots. Although the dot diameter depends on the size of the screen, it is 0.05 mm to 1.0 mm, preferably 0.1 mm to 0.5 mm. As the black dots (or inverted dots), black pigments such as Pigment Black group 6, 7, 11, 26 of Color Index International (C.I.) can be used. Moreover, what provided the light transmittance of about 5-30% of visible light transmittance | permeability by diluting commercially available black ink with a medium, a solvent, etc. and using it at low concentration is preferable. The black ink contains one or more of conductive carbon black, composite oxide black pigment, iron oxide black pigment, titanium oxide black pigment, azomethine azo black pigment, and perylene black pigment, polyaniline, polythiophene And conductive ink containing a conjugated polymer such as polypyrrole. The dot pattern printing layer can be formed by a known printing method such as gravure printing, screen (silk) printing, ink jet printing, or transfer printing.
本発明の透過投映スクリーンは透光性導電層部と光拡散層部とを有している。光拡散層部は熱可塑性樹脂と光拡散性粒子とを含有し、光拡散性粒子の含有率は光拡散層部の質量に対して１０〜６０質量％とすることが好ましい。この光拡散層部の存在によってスクリーンに透過投映性を付与すると同時にホットスポット抑止効果の発現を可能とする。光拡散層部を構成する熱可塑性樹脂は、段落〔００１８〕に記した熱可塑性樹脂から選ばれ、好ましくは用いた熱可塑性樹脂フィルムと同じ樹脂を選択し、カレンダー成型機またはＴダイス押出成型機などの公知のフィルム・シート製造機により、厚さ０．１ｍｍ〜１．０ｍｍの範囲内で製造されたものが使用できる。また光拡散性粒子は、ガラスビーズ、ガラスパウダー、シリカビーズ、シリコーンレジン（またはゴム）ビーズ、アクリル樹脂ビーズ、架橋アクリル樹脂ビーズ、スチレン樹脂ビーズ、架橋スチレン樹脂ビーズ、メラミン樹脂ビーズ、及びこれらの表面処理ビーズなどから選ばれた１種以上で、平均粒子径５〜３０μｍ、特に５〜２０μｍの球状中実粒子が好ましく、特に遮熱性を重視する場合にはガラスバルーン、シリカバルーン、シラスバルーンなどの球状中空粒子を主体に用いることが断熱層の付与形成の観点から好ましい。ここで「平均粒子径５〜３０μｍ」とは、平均粒子径５μｍの粒子群、平均粒子径６μｍの粒子群、平均粒子径７μｍの粒子群・・・平均粒子径３０μｍの粒子群の個別集団を意味する。表面処理ビーズとは、上記ビーズの表面をシランカップリング剤やチタンカップリング剤の反応物、加水分解物で被覆したもの、シリカ微粒子で被覆したもの、ビーズ構成樹脂と異種の樹脂で被覆したものなどが挙げられる。光拡散性粒子の均粒子径が５０μｍ程度であっても大型スクリーンでは視聴映像に特段の悪影響はないが、スクリーンを撓めたときに光拡散層部にクラックを生じ易く、クラック部の光の屈折により白化現象を起こし、投映画像の鮮明性を阻害することがある。また平均粒子径が５μｍ未満だと光拡散効果が不十分となりホットスポット抑止効果が不十分となることがある。光拡散性粒子の含有量が１０質量部未満だと光拡散効果が不十分となり投映画像にプロジェクター光源（ホットスポット）が映り込む不具合を生じることがある。また光拡散性粒子の含有量が６０質量部を越えると投映画像にハレーションを生じたり、スクリーンを撓めたときに光拡散層部にクラックを生じ、クラック部の光の屈折により白化現象を起こし、投映画像の鮮明性を阻害することがある。また、熱可塑性樹脂の屈折率と光拡散性粒子の屈折率とは屈折率差０．０１以上、特に０．０５以上を有する条件で光拡散性粒子の光拡散効果を十分に確保することができる。屈折率差が０．０５以上であれば、熱可塑性樹脂の屈折率と光拡散性粒子の何れ側を高値としてもよい。屈折率はＤ線を光源とするアッベ屈折率計により求めた値を適用する。 The transmissive projection screen of the present invention has a translucent conductive layer portion and a light diffusion layer portion. The light diffusing layer portion contains a thermoplastic resin and light diffusing particles, and the content of the light diffusing particles is preferably 10 to 60% by mass with respect to the mass of the light diffusing layer portion. The presence of the light diffusing layer part imparts transmission projection properties to the screen, and at the same time allows the hot spot suppression effect to be exhibited. The thermoplastic resin constituting the light diffusion layer portion is selected from the thermoplastic resins described in paragraph [0018], preferably the same resin as the thermoplastic resin film used is selected, and a calendar molding machine or a T-die extrusion molding machine What was manufactured in the range of thickness 0.1mm-1.0mm with well-known film-sheet manufacturing machines, such as these, can be used. The light diffusing particles include glass beads, glass powder, silica beads, silicone resin (or rubber) beads, acrylic resin beads, crosslinked acrylic resin beads, styrene resin beads, crosslinked styrene resin beads, melamine resin beads, and their surfaces. Spherical solid particles having an average particle diameter of 5 to 30 μm, particularly 5 to 20 μm are preferable, and at least one selected from treated beads is used. When heat shielding properties are particularly important, glass balloons, silica balloons, shirasu balloons, etc. It is preferable to use spherical hollow particles as a main component from the viewpoint of providing and forming a heat insulating layer. Here, the “average particle size of 5 to 30 μm” means an individual group of a particle group having an average particle size of 5 μm, a particle group having an average particle size of 6 μm, a particle group having an average particle size of 7 μm, and a particle group having an average particle size of 30 μm. means. The surface-treated beads are the ones coated with the reaction product of silane coupling agent or titanium coupling agent, hydrolyzate, coated with silica fine particles, or coated with a resin different from the bead constituent resin. Etc. Even if the average particle size of the light diffusing particles is about 50 μm, there is no particular adverse effect on the viewing image on a large screen. However, when the screen is bent, the light diffusing layer easily cracks, and Refraction causes a whitening phenomenon and may impair the sharpness of the projected image. On the other hand, if the average particle diameter is less than 5 μm, the light diffusion effect is insufficient and the hot spot suppression effect may be insufficient. When the content of the light diffusing particles is less than 10 parts by mass, the light diffusing effect is insufficient, and a problem that a projector light source (hot spot) is reflected in the projected image may occur. If the content of light diffusing particles exceeds 60 parts by mass, halation occurs in the projected image, or cracks occur in the light diffusing layer when the screen is bent, causing whitening due to light refraction at the cracks. , The sharpness of the projected image may be hindered. Further, it is possible to sufficiently ensure the light diffusing effect of the light diffusing particles under the condition that the refractive index difference between the thermoplastic resin and the light diffusing particles is 0.01 or more, particularly 0.05 or more. it can. If the difference in refractive index is 0.05 or more, either side of the refractive index of the thermoplastic resin and the light diffusing particles may be set to a high value. A value obtained by an Abbe refractometer using the D line as a light source is applied as the refractive index.
また、透光性導電層部（熱可塑性樹脂フィルム）、光拡散層部または透明保護層には界面活性剤を含むことができ、これによって得られるスクリーンの表面抵抗値（測定方法：JIS K6911、測定条件：湿度３０％ＲＨ−温度２３℃）に、１．０Ｅ＋１２Ω未満の帯電防止性が付与され、スクリーン表面に塵や埃が静電付着することを抑止し、それによって塵や埃の乱反射が起こり難い環境とすることで美麗な投映画面が常時維持される。界面活性剤は、アニオン界面活性剤（カルボン酸塩、硫酸エステル塩、スルホン酸塩、リン酸エステル塩）、カチオン界面活性剤（アミン塩型、第４級アンモニウム型）、両性界面活性剤（アミノ酸型、ベタイン型）、非イオン界面活性剤（ポリエチレングリコール型、多価アルコール型）などが使用でき、透光性導電層部（熱可塑性樹脂フィルム）、光拡散層部または透明保護層の質量に対して１〜５質量％の含有量である。また高分子型帯電防止剤として、ポリアニリン、ポリチオフェン、ポリピロールなどの共役系高分子の他、四級アンモニウム塩を側鎖に１個以上有するモノマーを共重合成分に含む共重合体で、例えば、ポリビニルベンジル型、ポリ(メタ)アクリレート型、スチレン−(メタ)アクリレート共重合体型、スチレン−マレイミド共重合体型、メタクリレート−メタクリルイミド共重合体型などの四級アンモニウム塩型ポリマーが使用できる。これら高分子型帯電防止剤は、１次粒子径３〜１５０ｎｍの、シリカ（酸化ケイ素）ゾル、アルミナ（酸化アルミニウム）ゾル、ジルコニア（酸化ジルコニウム）ゾル、セリア（酸化セリウム）ゾル、酸化スズゾル（リン酸ドープ）及び複合酸化物（酸化亜鉛−五酸化アンチモン複合または酸化スズ−五酸化アンチモン複合）ゾルなどの無機コロイド物質と併用し、質量比３：１〜１：３で使用することができる。 Further, the translucent conductive layer part (thermoplastic resin film), the light diffusion layer part or the transparent protective layer may contain a surfactant, and the surface resistance value of the screen obtained thereby (measurement method: JIS K6911, Measurement conditions: Humidity 30% RH-Temperature 23 ° C) is provided with antistatic properties of less than 1.0E + 12Ω, preventing dust and dirt from electrostatically adhering to the screen surface, thereby preventing irregular reflection of dust and dirt. A beautiful projection screen is maintained at all times by making the environment difficult to occur. Surfactant includes anionic surfactant (carboxylate, sulfate ester, sulfonate, phosphate ester salt), cationic surfactant (amine salt type, quaternary ammonium type), amphoteric surfactant (amino acid) Type, betaine type), nonionic surfactant (polyethylene glycol type, polyhydric alcohol type), etc. can be used, and the mass of the translucent conductive layer (thermoplastic resin film), light diffusion layer or transparent protective layer On the other hand, the content is 1 to 5% by mass. In addition to conjugated polymers such as polyaniline, polythiophene, and polypyrrole, the polymer type antistatic agent is a copolymer containing a monomer having at least one quaternary ammonium salt in the side chain as a copolymer component, such as polyvinyl Quaternary ammonium salt type polymers such as benzyl type, poly (meth) acrylate type, styrene- (meth) acrylate copolymer type, styrene-maleimide copolymer type, and methacrylate-methacrylimide copolymer type can be used. These polymer antistatic agents have a primary particle diameter of 3 to 150 nm, silica (silicon oxide) sol, alumina (aluminum oxide) sol, zirconia (zirconium oxide) sol, ceria (cerium oxide) sol, tin oxide sol (phosphorus). Acid-doped) and composite oxides (zinc oxide-antimony pentoxide composite or tin oxide-antimony pentoxide composite) sol and other inorganic colloid materials can be used at a mass ratio of 3: 1 to 1: 3.
本発明の透過投映スクリーンには光透過性織布を芯材に含んでいてもよい。これらの態様に「透光性導電層部／光拡散層部／光透過性織布」、「透光性導電層部／光拡散層部／光透過性織布」、「ドットパターン印刷層／透光性導電層部／光拡散層部／光透過性織布」、「透光性導電層部／ドットパターン印刷層／光拡散層部／光透過性織布」、「ドットパターン印刷層／透光性導電層部／光拡散層部／光透過性織布」などが挙げられ、これらのすべての態様において、透光性導電層部とは「金属酸化物薄膜層／熱可塑性樹脂フィルム」、「熱可塑性樹脂フィルム／金属酸化物薄膜層」、「金属酸化物薄膜層／熱可塑性樹脂フィルム／金属酸化物薄膜層」の３態様を含む。これらの態様において、光透過性織布の露出面には更に熱可塑性樹脂による透明層、または光拡散層が形成されたものでもよい。光透過性織布は、平織、綾織、繻子織、模紗織など公知の織布が使用でき、特に平織織布だと得られるスクリーンの経緯物性バランスが良好となる。光透過性織布は糸間間隔を均等に平行配置した経糸条、及び緯糸条を含んで構成された粗目状織物（空隙率１０〜５０％）で、糸条自体の光透過性を有し、さらに糸条間の間隙で形成された空隙部による光透過性を有するものである。または非粗目状織物（空隙率１０％未満）で、主に糸条自体の光透過性に依存するものである。本発明において、補強効果、光拡散効果の均一性などの観点から、経緯糸条の交絡間に形成される空隙率が０〜５％の高密度織物が特に好ましく用いられる。光透過性織布は公知の難燃加工、撥水処理、接着剤処理などが施されたものでも良い。 The transmissive projection screen of the present invention may contain a light transmissive woven fabric in the core material. In these embodiments, “translucent conductive layer portion / light diffusing layer portion / light transmissive woven fabric”, “translucent conductive layer portion / light diffusing layer portion / light transmissive woven fabric”, “dot pattern printing layer / Translucent conductive layer part / light diffusion layer part / light transmissive woven fabric ”,“ Translucent conductive layer part / dot pattern printing layer / light diffusion layer part / light transmissive woven fabric ”,“ dot pattern printing layer / Translucent conductive layer portion / light diffusing layer portion / light transmissive woven fabric ”and the like. In all of these embodiments, the translucent conductive layer portion is“ metal oxide thin film layer / thermoplastic resin film ”. , “Thermoplastic resin film / metal oxide thin film layer” and “metal oxide thin film layer / thermoplastic resin film / metal oxide thin film layer”. In these embodiments, a transparent layer or a light diffusion layer made of a thermoplastic resin may be further formed on the exposed surface of the light-transmitting woven fabric. As the light-transmitting woven fabric, known woven fabrics such as plain weave, twill weave, satin weave, and patterned weave can be used. A light-transmitting woven fabric is a coarse woven fabric (porosity 10 to 50%) composed of warp yarns and weft yarns arranged evenly in parallel with the interval between yarns, and has light transmittance of the yarn itself. Furthermore, it has light transmittance due to a gap formed by a gap between yarns. Alternatively, it is a non-coarse woven fabric (porosity of less than 10%) and mainly depends on the light transmittance of the yarn itself. In the present invention, a high-density fabric having a porosity of 0 to 5% formed between the interlaces of the warp and weft yarns is particularly preferably used from the viewpoints of the reinforcing effect and the uniformity of the light diffusion effect. The light-transmitting woven fabric may be subjected to known flame retardant processing, water repellent treatment, adhesive treatment and the like.
光透過性織布を構成する繊維としては、ポリプロピレン繊維、ポリエチレン繊維、ポリエステル繊維、ナイロン繊維、ビニロン繊維、アクリル繊維など、合成繊維による長繊維糸条、ジアセテート繊維、トリアセテート繊維など、半合成繊維による長繊維、レーヨン繊維、ポリノジック繊維などの再生繊維糸条、ガラス繊維、シリカ繊維、アルミナ繊維など、無機繊維による長繊維糸条などであり、これらは単独使用または混用、混紡であってもよい。繊維の混用、混紡については双糸、三子撚糸、芯鞘糸、長繊維に短繊維を絡めた糸など、公知の複合糸を用いることができる。また、ポリプロピレン繊維、ポリエチレン繊維、ポリエステル繊維などはモノフィラメント糸条や延伸テープ糸条の形態であってもよい。本発明において、光透過性織布を構成する糸条はマルチフィラメント糸条が好ましく、特にフィラメント数１０〜３００本、繊度１３８〜２２２３dtex（デシテックス）、特に２７７〜１１１２dtexのマルチフィラメント糸条が好ましい。 Semi-synthetic fibers such as polypropylene fiber, polyethylene fiber, polyester fiber, nylon fiber, vinylon fiber, acrylic fiber, etc., synthetic fiber long fiber yarn, diacetate fiber, triacetate fiber, etc. Long fiber, rayon fiber, recycled fiber yarn such as polynosic fiber, etc., long fiber yarn made of inorganic fiber such as glass fiber, silica fiber, alumina fiber, etc., these may be used alone or mixed and blended . For fiber mixing and spinning, known composite yarns such as twin yarns, triplet twisted yarns, core-sheath yarns, yarns in which short fibers are entangled with long fibers can be used. Polypropylene fiber, polyethylene fiber, polyester fiber, etc. may be in the form of monofilament yarn or stretched tape yarn. In the present invention, a multifilament yarn is preferable as the yarn constituting the light-transmitting woven fabric, and in particular, a multifilament yarn having 10 to 300 filaments and a fineness of 138 to 2223 dtex (decitex), particularly 277 to 1112 dtex is preferable.
本発明の透過投映スクリーンは、ショーウインドーのガラス面内側に貼着使用する用例、ガラス面外側に貼着使用する用例、ショーウインドー内の空間に衝立設置する用例など使用形態は自在であり、特にショーウインドーのガラス面が弧状であっても本発明の透過投映スクリーンはその曲面に追従する可撓性を有している。本発明の透過投映スクリーンは表面が平滑であるためガラス面に対し密着性が高く、エア溜まりの少ない状態が維持されるので四隅固定のみでガラス面への設置を可能とするが、市販の粘着剤スプレーでスクリーン表面に粘着性を附帯させることでよりガラス面への貼付安定性を増すことができる。また映像投映装置は、スライド投映機、フィルム投映機、プラネタリウム投映機、レーザー投映機、オーバーヘッドプロジェクター及びビデオプロジェクターなどの映像投映装置を用いることができるが、特にビデオプロジェクターが好ましい。ビデオプロジェクターはコンピュータと連動し、コンピュータ内（ハードディスク）に保存されたＰＯＰ広告や動画、または無線やインターネット回線を通じて入手した情報、画像や動画をコンピュータ経由で投映する。これらの映像投映装置は透過投映スクリーン背面中央に配置するものであるが、奥行が狭い空間では反射ミラーを併用して斜目投映したものでもよい。また、本発明の透過投映スクリーンには、スピーカー、平面スピーカー、電子音声装置などの音響装置を付帯することがショーウインドーのビジュアル演出に効果的である。 The transmission projection screen of the present invention can be used in various forms such as an example of using it on the inside of the glass surface of a show window, an example of using it on the outside of the glass surface, an example of installing a screen in the space inside the show window, Even if the glass surface is arcuate, the transmission projection screen of the present invention has flexibility to follow the curved surface. Since the transmission projection screen of the present invention has a smooth surface and high adhesion to the glass surface, and maintains a state of less air accumulation, it can be installed on the glass surface only by fixing the four corners. By attaching the adhesiveness to the screen surface with the agent spray, the stability of sticking to the glass surface can be further increased. As the video projection device, a video projection device such as a slide projector, a film projector, a planetarium projector, a laser projector, an overhead projector, and a video projector can be used, and a video projector is particularly preferable. The video projector is linked with a computer and projects POP advertisements and moving images stored in the computer (hard disk) or information, images, and moving images obtained through a wireless or Internet line via the computer. These video projectors are arranged in the center of the rear surface of the transmissive projection screen. However, in a space where the depth is narrow, an oblique projection using a reflection mirror may be used. In addition, it is effective for visual presentation of a show window to attach a sound device such as a speaker, a flat speaker, and an electronic audio device to the transmissive projection screen of the present invention.
以下、本発明について実施例を挙げて具体的に説明するが、本発明はこれらに限定されるものではない。
実施例及び比較例で作成した透過投映スクリーンについて以下の評価を行った。透過投映スクリーンのサイズはたて１．５ｍ×よこ２．０ｍとして、背面に映像投映装置として液晶式ビデオプロジェクター（セイコーエプソン社製EH−TW500S）を使用した。
＜プロジェクター光源の視認性：ホットスポットの有無＞
たて１．５ｍ×よこ２．０ｍの透過投映スクリーンの裏面２ｍの距離にビデオプロジェクターを配置した。投映映像をシート真正面から観察し、以下の基準で評価した。
１：ホットスポット無：プロジェクター光源位置が認知できない
２：軽微なホットスポットを認める：おぼろにプロジェクター光源位置が認知できる
３：ホットスポット有：プロジェクター光源位置がはっきりと認知できる
＜映像の発色鮮明性（コントラスト性）＞
１：輝度が高く鮮明
２：輝度が高く不鮮明
３：輝度が低く不鮮明
＜可視光透過率＞
透過投映スクリーンの可視光透過率を、分光側色計CM−3600ｄ（コニカミノルタ社製）を使用しJIS Z8722に従って測定した。
＜熱線反射効果＞
室内でASTM D4803-97法による２５０Ｗ赤外線ランプ照射による昇温曲線を３０分間測定し、３０分後の温度を求めた。
＜遮熱効果＞
幅１００ｃｍ×高さ１００ｃｍ×奥行１００ｃｍの立方体の骨組みをアルミ製Ｌ型アングル（幅３５ｍｍ）で組み立て、立方体骨組の底面を除く全面に透過投映スクリーンを貼付固定し試験箱体を作製した。この試験箱体を正午〜１３時の太陽光が直射される環境（埼玉県草加市６月：晴天：気温２８℃）での試験箱体内部温度を温度センサー（試験箱体内部中心に温度センサーを床上５０ｃｍに宙吊固定）で測定した。
EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these.
The following evaluation was performed on the transmission projection screens created in the examples and comparative examples. The size of the transmissive projection screen was 1.5 m × 2.0 m, and a liquid crystal video projector (EH-TW500S manufactured by Seiko Epson Corporation) was used as a video projection device on the back.
<Visibility of projector light source: presence of hot spot>
A video projector was placed at a distance of 2 m on the back side of a 1.5 m long by 2.0 m wide projection screen. The projected video was observed from directly in front of the seat and evaluated according to the following criteria.
1: No hot spot: The projector light source position cannot be recognized. 2: A slight hot spot is recognized: The projector light source position can be recognized roughly. 3: The hot spot is present: The projector light source position can be clearly recognized. Contrast)>
1: Brightness is high and clear 2: Brightness is high and blurry 3: Low brightness and blurry <Visible light transmittance>
The visible light transmittance of the transmission projection screen was measured according to JIS Z8722 using a spectroscopic color meter CM-3600d (manufactured by Konica Minolta).
<Heat ray reflection effect>
A temperature rise curve by irradiation with a 250 W infrared lamp by the ASTM D4803-97 method was measured for 30 minutes indoors, and the temperature after 30 minutes was determined.
<Heat shielding effect>
A cube frame having a width of 100 cm, a height of 100 cm, and a depth of 100 cm was assembled with an aluminum L-shaped angle (width: 35 mm), and a transmission projection screen was pasted and fixed on the entire surface except the bottom surface of the cube frame to prepare a test box. A temperature sensor (temperature sensor in the center of the test box inside the test box) in the environment where sunlight from noon to 13:00 is directly shining through this test box (Soka City, Saitama, June: fine weather: temperature 28 ° C) Was suspended in a space of 50 cm above the floor).
［実施例１］
１−１）エチレンとノルボルネンとの共重合体（ノルボルネン含有率７８質量％）の環状オレフィンコポリマー：商標「ＴＯＰＡＳ」：品番６０１５：ポリプラスチックス社製：屈折率１．５３（ＩＳＯ４８９）：光線透過率（２ｍｍｔ）９１（ISO13468−2）を１７５℃の熱ロール条件でカレンダー成形を行い、幅１００ｃｍ×厚さ０．２ｍｍの透明フィルムを得た。
１−２）上記１−１）で得たフィルムの表面（コロナ放電処理）に下記配合１のグラビアコート（１２０メッシュ）による金属酸化物薄膜層（５μｍ厚）が設けられた透光性導電層部を得た。
〈配合１：金属酸化物薄膜層形成用組成物（１）〉
酸化亜鉛−五酸化アンチモン複酸化物ゾル（日産化学工業社製：商品名「セルナックス」
品番：ＣＸ−Ｚ６０３Ｍ−Ｆ２：粒子径１５ｎｍ：固形分６０質量％） １００質量部
ビニルトリエトキシシラン（有効成分１００質量％） ３０質量部
ベンゾトリアゾール化合物（紫外線吸収剤） １質量部
ポリエチレングリコール型非イオン活性剤（帯電防止剤） ３質量部
希釈剤（水） １００質量部
１−３）上記１−１)の透光性導電層部の熱可塑性樹脂フィルムに用いた環状オレフィンコポリマー：商標「ＴＯＰＡＳ」：品番６０１５：ポリプラスチックス社製：１００質量部に対し、光拡散性粒子として架橋ポリメタクリル酸メチル略球状粒子（平均粒子径１２μｍ）：商標「テクポリマー」：品番ＭＢＸ−１２：積水化成品工業社製：屈折率１．４９を２０質量部配合した組成物を１７５℃の熱ロール条件でカレンダー成形を行い、幅１００ｃｍ×厚さ０．２ｍｍの光透過拡散性フィルム（光拡散層部）を得た。
１−４）上記１−３）で得た光透過拡散性フィルム（光拡散層部）を、１−２）で得た透光性導電層部の裏面（非金属酸化物薄膜層）に対して１７５℃の熱圧着で積層し、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 1]
1-1) Cyclic olefin copolymer of a copolymer of ethylene and norbornene (norbornene content 78% by mass): Trademark “TOPAS”: Product No. 6015: Polyplastics Co., Ltd .: Refractive index 1.53 (ISO 489): Light transmission A rate (2 mmt) 91 (ISO13468-2) was calendered under a hot roll condition of 175 ° C. to obtain a transparent film having a width of 100 cm and a thickness of 0.2 mm.
1-2) Translucent conductive layer in which a metal oxide thin film layer (5 μm thickness) by gravure coating (120 mesh) of the following formulation 1 is provided on the surface (corona discharge treatment) of the film obtained in 1-1) above Got a part.
<Formulation 1: Composition for forming metal oxide thin film layer (1)>
Zinc oxide-antimony pentoxide double oxide sol (manufactured by Nissan Chemical Industries, Ltd .: trade name "Selnax")
Product No .: CX-Z603M-F2: Particle size 15 nm: Solid content 60% by mass) 100 parts by mass Vinyltriethoxysilane (active ingredient 100% by mass) 30 parts by mass Benzotriazole compound (ultraviolet absorber) 1 part by mass Polyethylene glycol type Ion activator (antistatic agent) 3 parts by weight Diluent (water) 100 parts by weight 1-3) Cyclic olefin copolymer used for the thermoplastic resin film of the translucent conductive layer of 1-1) above: Trademark “TOPAS ": Product number 6015: Polyplastics Co., Ltd .: Cross-linked polymethyl methacrylate substantially spherical particles (average particle size 12 μm) as light diffusing particles with respect to 100 parts by mass: Trademark" Techpolymer ": Product number MBX-12: Sekisui Made by Seisaku Kogyo Co., Ltd .: A composition containing 20 parts by mass of a refractive index of 1.49 is calendered under hot roll conditions at 175 ° C., To give 100 cm × thickness 0.2mm light transmissive diffusing film (light diffusion layer section).
1-4) With respect to the back surface (non-metal oxide thin film layer) of the light-transmitting conductive layer obtained in 1-2), the light-transmitting diffusive film (light diffusing layer) obtained in 1-3) above. Was laminated by thermocompression bonding at 175 ° C. to obtain a light transmissive laminate having a thickness of 0.4 mm.
［実施例２］
２−１）実施例１の透光性導電層部に用いた環状オレフィンコポリマーによるフィルムを下記配合２による軟質塩化ビニル樹脂によるカレンダーフィルム（０．２ｍｍ厚：１７０℃成型）に変更し、実施例１の配合１による金属酸化物薄膜層（５μｍ厚）が設けられた透光性導電層部を得た。
〈配合２：軟質塩化ビニル樹脂組成物〉
ポリ塩化ビニル樹脂 １００質量部
１，２−シクロヘキサンジカルボン酸ジイソノニルエステル（可塑剤） ６０質量部
※商品名：ヘキサモールＤＩＮＣＨ（ＢＡＳＦ社製）
エポキシ化大豆油 ２質量部
Ｂａ−Ｚｎ系複合安定剤 １．５質量部
ステアリン酸バリウム（滑剤） ０．２質量部
ベンゾトリアゾール系紫外線吸収剤 ０．３質量部
２−２）上記２−１)の透光性導電層部の熱可塑性樹脂フィルムに用いた配合２の軟質塩化ビニル樹脂組成物１００質量部に対し、光拡散性粒子として架橋ポリメタクリル酸メチル略球状粒子（平均粒子径１２μｍ）：商標「テクポリマー」：品番ＭＢＸ−１２：積水化成品工業社製：屈折率１．４９を２０質量部配合した組成物を１７０℃の熱ロール条件でカレンダー成形し、幅１００ｃｍ×厚さ０．２ｍｍの光透過拡散性フィルム（光拡散層部）を得、これを２−１）で得た透光性導電層部の裏面（非金属酸化物薄膜層）に対して１７０℃の熱圧着で積層し、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 2]
2-1) The film made of the cyclic olefin copolymer used in the translucent conductive layer portion of Example 1 was changed to a calender film (0.2 mm thickness: 170 ° C. molding) made of a soft vinyl chloride resin according to the following formulation 2, and Example A translucent conductive layer portion provided with a metal oxide thin film layer (5 μm thick) according to Formulation 1 of 1 was obtained.
<Formulation 2: Soft vinyl chloride resin composition>
Polyvinyl chloride resin 100 parts by mass 1,2-cyclohexanedicarboxylic acid diisononyl ester (plasticizer) 60 parts by mass * Product name: Hexamol DINCH (manufactured by BASF)
Epoxidized soybean oil 2 parts by weight Ba-Zn composite stabilizer 1.5 parts by weight Barium stearate (lubricant) 0.2 parts by weight Benzotriazole UV absorber 0.3 parts by weight 2-2) Above 2-1) Cross-linked polymethyl methacrylate substantially spherical particles (average particle size 12 μm) as light diffusing particles with respect to 100 parts by mass of the composition 2 soft vinyl chloride resin composition used for the thermoplastic resin film of the translucent conductive layer portion: Trademark “Techpolymer”: Part No. MBX-12: Sekisui Plastics Kogyo Co., Ltd .: A composition containing 20 parts by mass of a refractive index of 1.49 was calendered under hot roll conditions at 170 ° C., width 100 cm × thickness 0. A 2 mm light transmissive diffusive film (light diffusing layer part) was obtained, and this was thermocompression bonded at 170 ° C. to the back surface (nonmetal oxide thin film layer) of the light transmissive conductive layer part obtained in 2-1). Laminated and 0.4mm thick To obtain a transparent laminate.
［実施例３］
実施例１の金属酸化物薄膜層〈配合１：金属酸化物薄膜層形成用組成物（１）〉を下記〈配合３：金属酸化物薄膜層形成用組成物（２）〉による金属酸化物薄膜層（５μｍ厚）に変更した以外は実施例１と同様として、厚さ０．４ｍｍの光透過性積層体を得た。
〈配合３：金属酸化物薄膜層形成用組成物（２）〉
酸化スズ（リン・ドープ）ゾル（日産化学工業社製：商品名「セルナックス」
品番：ＣＸ−Ｓ５０１Ｍ：粒子径５〜２０ｎｍ：固形分５０質量％） １００質量部
ビニルトリエトキシシラン（有効成分１００質量％） ３０質量部
ベンゾトリアゾール化合物（紫外線吸収剤） １質量部
ポリエチレングリコール型非イオン活性剤（帯電防止剤） ３質量部
希釈剤（水） １００質量部
[Example 3]
The metal oxide thin film layer <Formulation 1: Composition for forming metal oxide thin film layer (1)> of Example 1 was prepared as follows. <Formulation 3: Composition for forming metal oxide thin film layer (2)> A light-transmitting laminate having a thickness of 0.4 mm was obtained in the same manner as in Example 1 except that the layer was changed to a layer (5 μm thick).
<Composition 3: Composition for forming metal oxide thin film layer (2)>
Tin oxide (phosphorus dope) sol (manufactured by Nissan Chemical Industries, Ltd .: trade name "Selnax")
Product number: CX-S501M: particle size 5-20 nm: solid content 50% by mass) 100 parts by mass Vinyltriethoxysilane (active ingredient 100% by mass) 30 parts by mass Benzotriazole compound (ultraviolet absorber) 1 part by mass Polyethylene glycol type Ion activator (antistatic agent) 3 parts by weight Diluent (water) 100 parts by weight
［実施例４］
実施例２の金属酸化物薄膜層〈配合１：金属酸化物薄膜層形成用組成物（１）〉を実施例３で用いた〈配合３：金属酸化物薄膜層形成用組成物（２）〉による金属酸化物薄膜層（５μｍ厚）に変更した以外は実施例２と同様として、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 4]
The metal oxide thin film layer <Formulation 1: composition for forming metal oxide thin film layer (1)> of Example 2 was used in Example 3 <Formulation 3: composition for forming metal oxide thin film layer (2)> A light-transmitting laminate having a thickness of 0.4 mm was obtained in the same manner as in Example 2 except that the metal oxide thin film layer (thickness: 5 μm) was changed.
［実施例５］
５−１）実施例１の１−２）で得た透光性導電層部（環状オレフィンコポリマーフィルム／金属酸化物薄膜層）の裏面（非金属酸化物薄膜層面）に下記配合４によるドットパターン印刷層をグラビア印刷により形成した。ドットは直径０．０８ｍｍ円形、パターンとして、タテまたはヨコに並ぶドット列は、隣接同士がドット間距離（０．１２ｍｍ）の半分の距離でズレた位置に配置された規則的なものを１５０メッシュで刻印したグラビアロールを用いた。印刷後、紫外線照射にてドット印刷部を硬化させてドットパターン印刷層を形成した。
〈配合４：黒色ドットパターン印刷層〉
※ドット印刷部の膜厚５μｍの時に光線透過率１２〜１５％となる濃度に調整
導電性カーボンブラック １０質量部
エチレンオキサイド変性トリメチロールプロパントリアクリレート ５０質量部
※〔ＣＨ２＝ＣＨＣＯ−（ＯＣ２Ｈ４）−ＯＣＨ２〕３−ＣＣＨ２ＣＨ３〕
ポリエステル系アクリレートプレポリマー ５０質量部
ベンゾフェノン（光重合開始剤） ０．５質量部
５−２）実施例１の１−３）で得た光透過拡散性フィルム（光拡散層部）を、５−１）で得た透光性導電層部の黒色ドットパターン印刷層形成面とが重なるように配置した状態で１７５℃の熱圧着で積層を行い、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 5]
5-1) The dot pattern by the following formulation 4 on the back surface (non-metal oxide thin film layer surface) of the translucent conductive layer part (cyclic olefin copolymer film / metal oxide thin film layer) obtained in 1-2) of Example 1 The printing layer was formed by gravure printing. The dots are 0.08 mm in diameter, and the dots are arranged vertically or horizontally as a pattern. Adjacent ones are arranged at a position that is half the distance between dots (0.12 mm). A gravure roll engraved with is used. After printing, the dot printing portion was cured by ultraviolet irradiation to form a dot pattern printing layer.
<Formulation 4: Black dot pattern printing layer>
* Adjusted to a concentration at which the light transmittance is 12 to 15% when the film thickness of the dot printing part is 5 μm. Conductive carbon black 10 parts by mass Ethylene oxide-modified trimethylolpropane triacrylate 50 parts by mass * [CH 2 = CHCO- (OC 2 H 4) -OCH 2] 3 -CCH 2 CH 3]
Polyester-based acrylate prepolymer 50 parts by mass Benzophenone (photopolymerization initiator) 0.5 part by mass 5-2) The light transmissive diffusive film (light diffusion layer part) obtained in 1-3) of Example 1 Lamination was performed by thermocompression bonding at 175 ° C. in a state where the transparent conductive layer portion obtained in 1) was placed so as to overlap the black dot pattern printing layer forming surface, and a light-transmissive laminate having a thickness of 0.4 mm was obtained. Obtained.
［実施例６］
６−１）実施例２の２−１）で得た透光性導電層部（軟質塩化ビニル樹脂フィルム／金属酸化物薄膜層）の裏面（非金属酸化物薄膜層面）に配合４による実施例５と同一のドットパターン印刷層をグラビア印刷により形成した。
６−２）実施例２の２−２）で得た光透過拡散性フィルム（光拡散層部）を、６−１）で得た透光性導電層部の黒色ドットパターン印刷層形成面とが重なるように配置した状態で１７０℃の熱圧着で積層を行い、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 6]
6-1) Example by formulation 4 on the back surface (non-metal oxide thin film layer surface) of the translucent conductive layer part (soft vinyl chloride resin film / metal oxide thin film layer) obtained in 2-1) of Example 2 The same dot pattern printing layer as 5 was formed by gravure printing.
6-2) The light-transmitting diffusive film (light diffusing layer part) obtained in 2-2) of Example 2 is the black dot pattern printed layer forming surface of the light-transmitting conductive layer part obtained in 6-1). Was laminated by thermocompression bonding at 170 ° C. in a state of being arranged so as to overlap each other to obtain a light-transmitting laminate having a thickness of 0.4 mm.
［実施例７］
７−１）実施例１の１−１）と同一の幅１００ｃｍ×厚さ０．２ｍｍの環状オレフィンコポリマーフィルムを用い、この表面（コロナ放電処理）に配合４による実施例５と同一のドットパターン印刷層をグラビア印刷により形成した。
７−２）ドットパターン印刷層の形成面全面（ドットパターンの余白部を含む）に実施例３の配合３を用いてのグラビアコート（１２０メッシュ）による金属酸化物薄膜層（５μｍ厚）を設け、これを実施例７の透光性導電層部とした。
７−３）実施例１の１−３）と同一の幅１００ｃｍ×厚さ０．２ｍｍの光透過拡散性フィルム（光拡散層部）を、７−２）で得た透光性導電層部の裏面（非金属酸化物薄膜層）に対して１７５℃の熱圧着で積層し、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 7]
7-1) The same dot pattern as in Example 5 according to Formulation 4 was used on this surface (corona discharge treatment) using the same cyclic olefin copolymer film having a width of 100 cm and a thickness of 0.2 mm as in 1-1) of Example 1. The printing layer was formed by gravure printing.
7-2) A metal oxide thin film layer (5 μm thick) by gravure coating (120 mesh) using Formulation 3 of Example 3 is provided on the entire formation surface of the dot pattern printing layer (including the blank portion of the dot pattern). This was used as the translucent conductive layer portion of Example 7.
7-3) Translucent conductive layer part obtained in 7-2) with the same light transmission and diffusion film (light diffusion layer part) having a width of 100 cm and a thickness of 0.2 mm as in 1-3 of Example 1 Was laminated by thermocompression bonding at 175 ° C. with respect to the back surface (nonmetal oxide thin film layer), to obtain a light transmissive laminate having a thickness of 0.4 mm.
［実施例８］
８−１）実施例２の２−１）と同一の幅１００ｃｍ×厚さ０．２ｍｍの軟質塩化ビニル樹脂フィルムを用い、この表面（コロナ放電処理）に配合４による実施例５と同一のドットパターン印刷層をグラビア印刷により形成した。
８−２）ドットパターン印刷層の形成面全面（ドットパターンの余白部を含む）に実施例４の配合３を用いてのグラビアコート（１２０メッシュ）による金属酸化物薄膜層（５μｍ厚）を設け、これを実施例８の透光性導電層部とした。
８−３）実施例２の２−２）と同一の幅１００ｃｍ×厚さ０．２ｍｍの光透過拡散性フィルム（光拡散層部）を、８−２）で得た透光性導電層部の裏面（非金属酸化物薄膜層）に対して１７０℃の熱圧着で積層し、厚さ０．４ｍｍの光透過性積層体を得た。
[Example 8]
8-1) Using the same soft vinyl chloride resin film having a width of 100 cm and a thickness of 0.2 mm as in 2-1) of Example 2, the same dots as in Example 5 by Formulation 4 on this surface (corona discharge treatment) A pattern printing layer was formed by gravure printing.
8-2) A metal oxide thin film layer (5 μm thick) by gravure coating (120 mesh) using the formulation 3 of Example 4 is provided on the entire formation surface of the dot pattern printing layer (including the blank portion of the dot pattern). This was used as the translucent conductive layer portion of Example 8.
8-3) Translucent conductive layer part obtained in 8-2) with a light transmissive diffusive film (light diffusion layer part) having a width of 100 cm and a thickness of 0.2 mm identical to 2-2) of Example 2 Was laminated by thermocompression bonding at 170 ° C. with respect to the back surface (nonmetal oxide thin film layer), to obtain a light transmissive laminate having a thickness of 0.4 mm.
［実施例９〜１２］
実施例１、３、５、７の光透過性積層体（スクリーン）を表層、下記ガラス織布を基材層、実施例１の１−１）の環状オレフィンコポリマー透明フィルムを裏面層として、１７５℃の熱ロールラミネーターを用いて積層一体化し、厚さ０．７ｍｍの各種スクリーン（実施例１ベースは実施例９、実施例３ベースは実施例１０、実施例５ベースは実施例１１、実施例７ベースは実施例１２）を得た。
＜ガラス織布＞
３７５dtexのＥガラス（屈折率１．５５８）無撚扁平マルチフィラメント糸条を経糸及び緯糸として、経糸打込密度３２本／inch、緯糸打込密度３２本／inchで平織してなる空隙率１．０％未満、質量１００ｇ／ｍ２のガラス織布（シランカップリング処理）
[Examples 9 to 12]
175 with the light transmissive laminate (screen) of Examples 1, 3, 5 and 7 as the surface layer, the following glass woven fabric as the base material layer, and the cyclic olefin copolymer transparent film of 1-1 of Example 1 as the back layer. Various screens having a thickness of 0.7 mm by using a heat roll laminator at 0 ° C. (Example 1 base is Example 9, Example 3 base is Example 10, Example 5 base is Example 11, Example 11) Seven bases obtained Example 12).
<Glass woven fabric>
375 dtex E glass (refractive index: 1.558) Untwisted flat multifilament yarns with warp and weft as a warp density of 32 yarns / inch, weft density of 32 yarns / inch and a porosity of 1. Glass woven fabric of less than 0% and mass of 100 g / m 2 (silane coupling treatment)
［実施例１３〜１６］
実施例２、４、６、８の光透過性積層体（スクリーン）を表層、ガラス織布（実施例７〜９）を基材層、実施例２の２−１）の軟質塩化ビニル樹脂透明フィルムを裏面層として、１７０℃の熱ロールラミネーターを用いて積層一体化し、厚さ０．７ｍｍの各種スクリーン（実施例２ベースは実施例１３、実施例４ベースは実施例１４、実施例６ベースは実施例１５、実施例８ベースは実施例１６）を得た。
[Examples 13 to 16]
The light transmissive laminates (screens) of Examples 2, 4, 6, and 8 are the surface layer, the glass woven fabrics (Examples 7 to 9) are the base material layers, and the soft vinyl chloride resin transparent of Example 2-1) is transparent. The film was used as a back layer and laminated and integrated using a heat roll laminator at 170 ° C., and various screens having a thickness of 0.7 mm (Example 2 base was Example 13; Example 4 base was Example 14; Example 6 base Obtained Example 15 and Example 8 based on Example 16).
実施例１〜１６の透過投映スクリーンは、何れも明るい環境での透過投映像の発色鮮明性とホットスポット抑止効果に優れ、しかも十分な熱線反射効果及び導電性を有していた。特に手垢汚れなどが付着しても、ペーパータオルやワイピングクロスなどによる拭取で汚れの除去が容易であり、１．０Ｅ＋９Ω〜１０Ωの帯電防止効果を有し、静電気による埃や粉塵などの付着が極めて少ないことで、プロジェクター投映画像が埃や粉塵の存在で乱反射を起こし難いものであった。 All of the transmissive projection screens of Examples 1 to 16 were excellent in the color clarity of the transmissive projection image in a bright environment and the hot spot suppression effect, and had sufficient heat ray reflection effect and conductivity. In particular, even if dirt is attached to the hand, it is easy to remove the dirt by wiping with a paper towel or wiping cloth, etc. It has an antistatic effect of 1.0E + 9Ω to 10Ω, and adhesion of dust and dust due to static electricity is extremely high. Due to the small amount, the projected image of the projector is difficult to cause irregular reflection due to the presence of dust or dust.
［比較例１］
実施例１において、光拡散層部から光拡散性粒子の配合を省略した以外は実施例１と同様として厚さ０．４ｍｍのシートを得た。得られたシートは光拡散効果が不足して、投映画像が不鮮明であり、しかもプロジェクターの光源（ホットスポット）が露わとなり、光源が投映画像に映り込む不具合を生じるなど投映スクリーンの機能を有さないものであった。
[Comparative Example 1]
In Example 1, a sheet having a thickness of 0.4 mm was obtained in the same manner as in Example 1 except that the blending of the light diffusing particles was omitted from the light diffusion layer portion. The obtained sheet lacks the light diffusion effect, the projected image is unclear, the projector's light source (hot spot) is exposed, and the projector has a projection screen function that causes the light source to be reflected in the projected image. It was not.
［比較例２］
実施例１において、光拡散層部の光拡散性粒子の含有率を５質量％とした以外は実施例１と同様として厚さ０．４ｍｍのシートを得た。得られたシートは光拡散効果が不足して、投映画像が不鮮明であり、しかもプロジェクターの光源（ホットスポット）が露わとなり、光源が投映画像に映り込む不具合を生じるなど投映スクリーンの機能を十分に発現しないものであった。
[Comparative Example 2]
In Example 1, a sheet having a thickness of 0.4 mm was obtained in the same manner as in Example 1 except that the content ratio of the light diffusing particles in the light diffusion layer portion was 5% by mass. The obtained sheet has insufficient light diffusion effect, the projected image is unclear, the projector's light source (hot spot) is exposed, and the projection screen functions sufficiently, such as causing the light source to be reflected in the projected image It was not expressed.
［比較例３］
実施例１において、光拡散層部の光拡散性粒子の含有率を８０質量％とした以外は実施例１と同様として厚さ０．４ｍｍのシートを得た。得られたシートは十分な光拡散効果を有し、プロジェクターの光源（ホットスポット）を隠蔽し、投映画像も鮮明であったが、画像にハレーションを生じたり、シートを撓めたときに光拡散層部にクラックを生じ易くなり、クラック部の光の屈折により白化現象を起こし、投映画像の鮮明性を阻害した。
[Comparative Example 3]
In Example 1, a sheet having a thickness of 0.4 mm was obtained in the same manner as in Example 1 except that the content ratio of the light diffusing particles in the light diffusion layer portion was 80% by mass. The obtained sheet has a sufficient light diffusion effect, conceals the light source (hot spot) of the projector, and the projected image is also clear, but the light diffuses when the image is halated or the sheet is bent Cracks were likely to occur in the layer part, and whitening occurred due to the refraction of light in the crack part, thereby impairing the sharpness of the projected image.
［比較例４］
実施例５において、透光性導電層部から金属酸化物薄膜層の形成を省略した以外は実施例５と同様として厚さ０．４０ｍｍのシートを得た。得られたシートは十分な光拡散効果を有し、プロジェクターの光源（ホットスポット）を隠蔽し、投映画像も鮮明であったが、熱線反射効果や、遮熱効果などは有していなかった。
[Comparative Example 4]
In Example 5, a sheet having a thickness of 0.40 mm was obtained in the same manner as in Example 5 except that the formation of the metal oxide thin film layer was omitted from the translucent conductive layer part. The obtained sheet had a sufficient light diffusion effect, concealed the light source (hot spot) of the projector, and the projected image was clear, but did not have a heat ray reflection effect or a heat shielding effect.
本発明の透過投映スクリーンは、明るい環境での透過投映像の発色鮮明性（高いコントラスト効果）とホットスポット抑止効果に優れ、特にショーウインドーのガラス面装着に適した投映スクリーンを得ることができ、背後からプロジェクター投映するだけで、容易にデジタルディスプレイやデジタルサイネージなどの表現を可能とし、しかも帯電防止性及び遮熱性を有することで、透過投映スクリーンに対する、塵や埃の静電気付着を抑止し、塵や埃によるキラキラした乱反射ノイズの無い投映画像を常時維持することを可能とする。そして夏季の強い陽射しにも拘らず、店内温度の上昇を抑止するので冷房効率が効果的に改善される。従って本発明による透過投映スクリーンは、ウインドーディスプレイやＰＯＰ広告看板などの商業的利用は勿論、導電性を有することで、アミューズメント施設、屋外イベント会場などでの映画やアニメーションの壁面投映、音楽プロモーションビデオやライブ映像などの壁面投映などにも利用できる。また、インターネット通信との連動によるデジタルサイネージの利用として、ニュース速報、交通情報、災害時の緊急避難誘導のリアルタイム表示にも期待できる。 The transmissive projection screen of the present invention has excellent color clarity (high contrast effect) and hot spot suppression effect of a transmissive projection image in a bright environment, and can obtain a projection screen particularly suitable for mounting on a glass surface of a show window. By simply projecting from a projector, digital displays and digital signage can be easily expressed, and by having antistatic and thermal insulation properties, dust and dust can be prevented from adhering to the transparent projection screen. This makes it possible to always maintain a projected image free from the irregular reflection noise that is shining due to dust. In spite of the strong sunlight in the summer, the cooling efficiency is effectively improved because the rise in the store temperature is suppressed. Therefore, the transparent projection screen according to the present invention has electrical conductivity as well as commercial use such as a window display and a POP advertising billboard, so that it can be projected on wall surfaces of movies and animations at amusement facilities, outdoor event venues, music promotion videos, etc. It can also be used for wall projection such as live video. In addition, the use of digital signage in conjunction with Internet communication can be expected to provide news bulletins, traffic information, and real-time display of emergency evacuation guidance in the event of a disaster.
１：透過投映スクリーン（光透過性積層体）
２：透光性導電層部
２−１：熱可塑性樹脂フィルム
２−２：金属酸化物薄膜層
３：光拡散層部
３−１：光拡散性粒子
４：ドットパターン印刷層
５：光透過性織布
1: Transmission projection screen (light-transmitting laminate)
2: Translucent conductive layer part 2-1: Thermoplastic resin film 2-2: Metal oxide thin film layer 3: Light diffusing layer part 3-1: Light diffusing particle 4: Dot pattern printing layer 5: Light transmissive Woven fabric
Claims (6)
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| JP2014130989A JP2016009150A (en) | 2014-06-26 | 2014-06-26 | Translucent projection screen |
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| JP2014130989A JP2016009150A (en) | 2014-06-26 | 2014-06-26 | Translucent projection screen |
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| JP2016009150A true JP2016009150A (en) | 2016-01-18 |
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Cited By (1)
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|---|---|---|---|---|
| CN106896584A (en) * | 2017-05-05 | 2017-06-27 | 武汉华星光电技术有限公司 | LED light bar and backlight assembly |
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