JP2015174406A - Window-sticking infrared interception film - Google Patents
Window-sticking infrared interception film Download PDFInfo
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- JP2015174406A JP2015174406A JP2014054100A JP2014054100A JP2015174406A JP 2015174406 A JP2015174406 A JP 2015174406A JP 2014054100 A JP2014054100 A JP 2014054100A JP 2014054100 A JP2014054100 A JP 2014054100A JP 2015174406 A JP2015174406 A JP 2015174406A
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Abstract
Description
本発明は、窓ガラス等に貼着して使用し、太陽光からの赤外線（熱線）を遮断する窓貼用赤外線遮断フイルムに関する。 The present invention relates to an infrared shielding film for window pasting, which is used by being stuck to a window glass or the like and shields infrared rays (heat rays) from sunlight.
従来から、太陽光からの赤外線（熱線）を遮断する為に、車両、建物やショーウィンドウに使用する窓ガラス等に、赤外線を遮断する赤外線遮断フイルムを貼着することは広く利用されている。 Conventionally, in order to block infrared rays (heat rays) from sunlight, it has been widely used to attach an infrared ray blocking film for blocking infrared rays to a window glass used for a vehicle, a building or a show window.
また、窓ガラス等に貼着して赤外線遮断フイルムとして、プラスチックフイルム上に、赤外線を反射、又は吸収して赤外線を遮断する層が積層された赤外線遮断フイルムが広く一般に利用されている。 An infrared blocking film in which a layer that reflects or absorbs infrared rays to block infrared rays is laminated on a plastic film is widely used as an infrared blocking film that is adhered to a window glass or the like.
そして、特許文献１には、対向する１対のガラス基板内に配置する熱線反射フィルム（赤外線遮断フイルム）として、透明樹脂フィルムの一方の主面に高屈折率誘電体層と低屈折誘電体層とを交互に多層積層された熱線反射層が積層されており、透明樹脂フィルムの他方の主面に近赤外線吸収色素を含有するハードコート層が積層された熱線反射フィルム（赤外線遮断フイルム）が記載されている。 Patent Document 1 discloses a high-refractive-index dielectric layer and a low-refractive dielectric layer on one main surface of a transparent resin film as a heat ray reflective film (infrared shielding film) disposed in a pair of opposed glass substrates. And a heat ray reflective film (infrared shielding film) in which a hard coat layer containing a near-infrared absorbing dye is laminated on the other main surface of the transparent resin film. Has been.
そして、特許文献１記載の熱線反射フィルムには、以下の欠点があった。
（１）特許文献１記載の熱線反射フィルムは、光の干渉を利用して赤外線領域（波長域：７８０ｎｍ〜１０，０００ｎｍ）の光を選択的に反射する目的で熱線反射層が積層されたものであり、該熱線反射層は、電波透過性の観点から高屈折率誘電体層と低屈折率誘電体層とが交互に多層積層されたものである。また、該熱線反射層は、高屈折率誘電体層と低屈折率誘電体層とを合計した層数は３以上とすることが好ましいとしており、特許文献１の実施例において、高屈折率誘電体層（Ｎｂ２Ｏ５層）と低屈折率誘電体層（ＳｉＯ２層）とを交互に合わせて９層積層して熱線反射層を形成している。
その為、特許文献１記載の熱線反射フィルムは、該熱線反射フィルムを製造する為に、高屈折率誘電体層と低屈折率誘電体層とを交互に何度も繰り返し積層して熱線反射層を積層する必要があり生産性が極めて悪いものであった。その結果、特許文献１記載の熱線反射フィルムは、製造コストが極めて高いものとなってしまう欠点があった。
And the heat ray reflective film of patent document 1 had the following faults.
(1) The heat ray reflective film described in Patent Document 1 has a heat ray reflective layer laminated for the purpose of selectively reflecting light in the infrared region (wavelength range: 780 nm to 10,000 nm) using light interference. The heat ray reflective layer is formed by alternately laminating high refractive index dielectric layers and low refractive index dielectric layers from the viewpoint of radio wave transmission. Further, the heat ray reflective layer preferably has a total number of high refractive index dielectric layers and low refractive index dielectric layers of 3 or more. Nine layers of body layers (Nb 2 O 5 layers) and low refractive index dielectric layers (SiO 2 layers) are alternately stacked to form a heat ray reflective layer.
Therefore, the heat ray reflective film described in Patent Document 1 is obtained by repeatedly and repeatedly laminating a high refractive index dielectric layer and a low refractive index dielectric layer repeatedly in order to produce the heat ray reflective film. Therefore, productivity was extremely poor. As a result, the heat ray reflective film described in Patent Document 1 has a drawback that the production cost is extremely high.
（２）特許文献１記載の熱線反射フィルムに積層されている熱線反射層は、高屈折率誘電体層と低屈折率誘電体層とが交互に何度も繰り返し積層されている層であり、高屈折率誘電体層と低屈折率誘電体層とはいずれも無機膜である。
その為、無機膜である高屈折率誘電体層と低屈折率誘電体層との密着力、及び高屈折率誘電体層と透明樹脂フィルムとの密着力が弱く、密着力試験を行った場合に、高屈折率誘電体層、または低屈折率誘電体層が該熱線反射フィルム上から剥がれてしまい、所望の全日射透過率を確実に長く維持することができない欠点があった。
(2) The heat ray reflective layer laminated on the heat ray reflective film described in Patent Document 1 is a layer in which a high refractive index dielectric layer and a low refractive index dielectric layer are alternately and repeatedly laminated, Both the high refractive index dielectric layer and the low refractive index dielectric layer are inorganic films.
For this reason, the adhesion strength between the high refractive index dielectric layer and the low refractive index dielectric layer, which are inorganic films, and the adhesion strength between the high refractive index dielectric layer and the transparent resin film are weak, and an adhesion test was conducted. In addition, the high refractive index dielectric layer or the low refractive index dielectric layer is peeled off from the heat ray reflective film, and the desired total solar radiation transmittance cannot be reliably maintained long.
（３）特許文献１記載の熱線反射フィルムは、対向する１対のガラス基板の間に接着層を積層して、ガラス基板と該熱線反射フィルムとを貼着させて合わせガラスを得るために使用されている。
そして、特許文献１記載の熱線反射フィルムを使用した合わせガラスは、全日射透過率を効果的に低減させる目的で、熱可塑性樹脂と赤外線遮蔽性微粒子（錫がドープされた酸化インジウム微粒子（ＩＴＯ微粒子）等）とを含有させた接着層として使用している。
したがって、特許文献１記載の熱線反射フィルムは、特許文献１記載の熱線反射フィルムのみでは、所望の全日射透過率を得ることができない欠点があった。
また、接着層の用途で使用する熱可塑性樹脂は一般的に粘度が高く、接着層に使用する熱可塑性樹脂中に赤外線遮蔽性微粒子を均一に分散させることが困難であり、赤外線遮断性微粒子が不均一に分散した接着層となり、上記特許文献１記載の熱線反射フィルムを使用した合わせガラスの日射透過率を測定した場合に、測定する箇所によって日射透過率にバラつきが発生してしまう。したがって、特許文献１記載の熱線反射フイルムは、確実に所望の赤外線遮断性を発揮することができない欠点もあった。
(3) The heat ray reflective film described in Patent Document 1 is used to obtain a laminated glass by laminating an adhesive layer between a pair of opposing glass substrates and attaching the glass substrate and the heat ray reflective film. Has been.
And the laminated glass using the heat ray reflective film of patent document 1 is a thermoplastic resin and infrared shielding fine particles (indium oxide fine particles (ITO fine particles doped with tin) for the purpose of effectively reducing the total solar transmittance. ) Etc.) and is used as an adhesive layer.
Therefore, the heat ray reflective film described in Patent Document 1 has a defect that a desired total solar transmittance cannot be obtained only with the heat ray reflective film described in Patent Document 1.
Moreover, the thermoplastic resin used for the adhesive layer is generally high in viscosity, and it is difficult to uniformly disperse the infrared shielding fine particles in the thermoplastic resin used for the adhesive layer. When the solar radiation transmittance of the laminated glass using the heat ray reflective film described in Patent Document 1 is measured, the solar radiation transmittance varies depending on the location to be measured. Therefore, the heat ray reflective film described in Patent Document 1 has a drawback that it cannot reliably exhibit the desired infrared shielding property.
［１］本発明は、プラスチックフイルムの片面または両面に、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む赤外線遮断層、及び光学調整層が、少なくとも積層されていることを特徴とする窓貼用赤外線遮断フイルムである。
［２］本発明は、前記赤外線遮断層が、樹脂と赤外線吸収色素とを少なくとも含む赤外線遮断層Ａ、及び樹脂と金属酸化物微粒子とを少なくとも含む赤外線遮断層Ｂからなる層である上記［１］記載の窓貼用赤外線遮断フイルムである。
［３］本発明は、前記赤外線遮断層Ａが、プラスチックフイルムの片面に積層され、前記赤外線遮断層Ｂが、プラスチックフイルムの他の片面に積層されている上記［２］記載の窓貼用赤外線遮断フイルムである。
［４］本発明は、前記光学調整層が、少なくとも、赤外線遮断層Ｂが積層されている側の面の最表層に積層されている上記［２］、または［３］記載の窓貼用赤外線遮断フイルムである。
［５］本発明は、前記光学調整層が、赤外線遮断層Ｂと接するようにして積層されている上記［４］記載の窓貼用赤外線遮断フイルムである。
［６］本発明は、前記光学調整層が、光学調整層と接する層よりも屈折率が低い層である上記［１］から［５］のいずれか１項記載の窓貼用赤外線遮断フイルムである。
［７］本発明は、前記赤外線吸収色素が、ジイモニウム系色素である上記［１］から［６］のいずれか１項記載の窓貼用赤外線遮断フイルムである。
［８］本発明は、前記金属酸化物微粒子が、錫がドープされた酸化インジウム微粒子（ＩＴＯ微粒子）である上記［１］から［７］のいずれか１項記載の窓貼用赤外線遮断フイルムである。
[1] The window according to the present invention is characterized in that at least one infrared shielding layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles and an optical adjustment layer are laminated on one side or both sides of a plastic film. Infrared shielding film for pasting.
[2] In the present invention, the infrared blocking layer is a layer composed of an infrared blocking layer A including at least a resin and an infrared absorbing dye, and an infrared blocking layer B including at least a resin and metal oxide fine particles. ] The infrared shielding film for window sticking of description.
[3] The infrared ray for window sticking according to the above [2], wherein the infrared shielding layer A is laminated on one side of a plastic film, and the infrared shielding layer B is laminated on the other side of the plastic film. It is a blocking film.
[4] In the present invention, the optical adjustment layer is laminated at least on the outermost layer on the surface on which the infrared ray blocking layer B is laminated. The infrared for window pasting according to the above [2] or [3] It is a blocking film.
[5] The present invention is the infrared shielding film for window sticking according to the above [4], wherein the optical adjustment layer is laminated so as to be in contact with the infrared shielding layer B.
[6] The present invention is the infrared shielding film for window sticking according to any one of [1] to [5], wherein the optical adjustment layer is a layer having a refractive index lower than that of the layer in contact with the optical adjustment layer. is there.
[7] The present invention is the infrared shielding film for window sticking according to any one of [1] to [6], wherein the infrared absorbing dye is a diimonium dye.
[8] The present invention provides the infrared shielding film for window sticking according to any one of [1] to [7], wherein the metal oxide fine particles are indium oxide fine particles (ITO fine particles) doped with tin. is there.
本発明の窓貼用赤外線遮断フイルムは、プラスチックフイルムの片面または両面に、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む赤外線遮断層、及び光学調整層が、少なくとも積層されていることを特徴としている為、優れた可視光透過性、及び優れた赤外線遮断性を兼ね備えたものとなる。
具体的には、分光光度計で測定した本発明の窓貼用赤外線遮断フイルムの可視光透過率が７５％以上であれば優れた可視光透過性を有するものであり、また、分光光度計で測定した本発明の窓貼用赤外線遮断フイルムの日射透過率が５０％以下であれば優れた赤外線遮断性を有しているといえる。
In the infrared shielding film for window pasting of the present invention, an infrared shielding layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles, and an optical adjustment layer are laminated at least on one side or both sides of a plastic film. Since it is a characteristic, it has excellent visible light permeability and excellent infrared shielding properties.
Specifically, if the visible light transmittance of the infrared shielding film for window pasting of the present invention measured with a spectrophotometer is 75% or more, it has excellent visible light transmittance. If the measured solar radiation transmittance of the infrared shielding film for window sticking of the present invention is 50% or less, it can be said that it has excellent infrared shielding properties.
そして、優れた可視光透過性、及び優れた赤外線遮断性を兼ね備えた本発明の窓貼用赤外線遮断フイルムを製造する場合に、所望の赤外線遮断性を得る為に、赤外線遮断層を３層以上の多層積層する必要がない為、低い製造コストで本発明の窓貼用赤外線遮断フイルム製造することができる。
また、本発明の窓貼用赤外線遮断フイルムは、赤外線を遮断する為に本発明の窓貼用赤外線遮断フイルムに積層されている赤外線遮断層を３層以上の多層積層する必要がない為、赤外線遮断層とプラスチックフイルムとの密着力、及び赤外線遮断層と光学調整層との密着力が強く、赤外線遮断層、または光学調整層が本発明の窓貼用赤外線遮断フイルム上から剥がれることがなく、所望の赤外線透過性を確実に長く維持することができる。
And when manufacturing the infrared shielding film for window sticking of this invention which has the outstanding visible-light transmittance and the outstanding infrared shielding property, in order to obtain desired infrared shielding property, three or more infrared shielding layers are obtained. Therefore, the infrared shielding film for window pasting of the present invention can be produced at a low production cost.
Moreover, since the infrared shielding film for window sticking of this invention does not need to laminate | stack the infrared shielding layer laminated | stacked on the infrared shielding film for window sticking of this invention in order to interrupt | block infrared rays, it is infrared rays. The adhesion between the shielding layer and the plastic film, and the adhesion between the infrared shielding layer and the optical adjustment layer are strong, and the infrared shielding layer or the optical adjustment layer is not peeled off from the infrared shielding film for window pasting of the present invention. The desired infrared transparency can be reliably maintained for a long time.
また、上記の通り、本発明の窓貼用赤外線遮断フイルムは、上記の特徴を有したものである為、本発明の窓貼用赤外線遮断フイルム自体が、優れた可視光透過性、及び優れた赤外線遮断性の両方を兼ね備えたものとなる。
その為、本発明の窓貼用赤外線遮断フイルムとガラス板等とを貼着する場合に、使用する接着層等に、赤外線遮蔽性微粒子が含まれたものを使用する必要がなく、本発明の窓貼用赤外線遮断フイルムの日射透過率を測定する箇所によって、日射透過率にバラつきが生じることがない。したがって、本発明の窓貼用赤外線遮断フイルムは、確実に優れた赤外線遮断性を発揮することができる。
Further, as described above, since the infrared shielding film for window sticking of the present invention has the above-mentioned characteristics, the infrared shielding film for window sticking of the present invention itself has excellent visible light transmittance, and excellent It has both infrared shielding properties.
Therefore, when pasting the infrared shielding film for window sticking of the present invention and a glass plate or the like, it is not necessary to use a material containing infrared shielding fine particles in the adhesive layer to be used. The solar transmittance does not vary depending on the location where the solar transmittance of the infrared shielding film for window sticking is measured. Therefore, the infrared shielding film for window sticking of this invention can exhibit the outstanding infrared shielding property reliably.
本発明の窓貼用赤外線遮断フイルムは、プラスチックフイルムの片面または両面に、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む赤外線遮断層、及び光学調整層が積層されていることを特徴とする窓貼用赤外線遮断フイルムであり、優れた可視光透過性、及び優れた赤外線遮断性の両方を兼ね備えたものである。
本発明の窓貼用赤外線遮断フイルムの代表的な構成を下記（１）〜（５）に示す。尚、本発明の窓貼用赤外線遮断フイルムの構成は、下記構成に限らない。
（１）プラスチックフイルム／赤外線遮断層／光学調整層
（２）プラスチックフイルム／光学調整層／赤外線遮断層
（３）光学調整層／プラスチックフイルム／赤外線遮断層／光学調整層
（４）赤外線遮断層／プラスチックフイルム／赤外線遮断層／光学調整層
（５）光学調整層／赤外線遮断層／プラスチックフイルム／赤外線遮断層／光学調整層
The infrared shielding film for window pasting of the present invention is characterized in that an infrared shielding layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles and an optical adjustment layer are laminated on one side or both sides of a plastic film. It is an infrared shielding film for window sticking that combines both excellent visible light transparency and excellent infrared shielding properties.
Typical configurations of the infrared shielding film for window sticking of the present invention are shown in the following (1) to (5). In addition, the structure of the infrared shielding film for window sticking of this invention is not restricted to the following structure.
(1) Plastic film / infrared blocking layer / optical adjustment layer (2) Plastic film / optical adjustment layer / infrared blocking layer (3) Optical adjustment layer / plastic film / infrared blocking layer / optical adjustment layer (4) Infrared blocking layer / Plastic film / Infrared blocking layer / Optical adjusting layer (5) Optical adjusting layer / Infrared blocking layer / Plastic film / Infrared blocking layer / Optical adjusting layer
本発明の窓貼用赤外線遮断フイルムに使用するプラスチックフイルムは、特に制限はなく、ポリエチレンテレフタレートフィルム、ポリカーボネートフイルム、ポリエチレンフイルム、ポリプロピレンフイルム、ポリアミドフイルム等、各種従来公知のプラスチックフイルムが使用できる。 The plastic film used for the infrared shielding film for window pasting of the present invention is not particularly limited, and various conventionally known plastic films such as a polyethylene terephthalate film, a polycarbonate film, a polyethylene film, a polypropylene film, and a polyamide film can be used.
プラスチックフイルムは、無延伸、一軸延伸、二軸延伸の何れでもよく、また、帯電防止剤、着色剤、熱安定剤等の各種添加剤を含んでいても構わない。
プラスチックフイルムの種類や厚さは、所望の用途、目的に応じて適宜選択すればよい。
The plastic film may be non-stretched, uniaxially stretched, or biaxially stretched, and may contain various additives such as an antistatic agent, a colorant, and a heat stabilizer.
What is necessary is just to select suitably the kind and thickness of a plastic film according to a desired use and the objective.
また、プラスチックフイルムは、プラスチックフイルムと赤外線遮断層等との密着力を強くする目的で、プラスチックフイルム上にアンカーコート、易接着コート、コロナ処理等の表面処理がされたものでも構わず、これら表面処理がされたプラスチックフイルムも、本明細書のプラスチックフイルムに含まれる。 In addition, the plastic film may have a surface treated with an anchor coat, an easy-adhesion coat, a corona treatment, etc. on the plastic film for the purpose of strengthening the adhesion between the plastic film and the infrared shielding layer. The processed plastic film is also included in the plastic film of the present specification.
プラスチックフイルムの厚さは、特に限定されないが、２５〜１００μｍの範囲が好ましい。
プラスチックフイルムの厚さが２５μｍよりも薄いと、本発明の窓貼用赤外線遮断フイルムをガラス板等に貼着する際に、カールやシワ等が発生しやすくなるおそれがある為、好ましくなく、１００μｍよりも厚いと、本発明の窓貼用赤外線遮断フイルムを所望の大きさにカットする際に、カッターナイフ等でカットしづらい為、作業性が悪くなり、また本発明の窓貼用赤外線遮断フイルムを製造する際に製造コストも上がる為、好ましくない。
Although the thickness of a plastic film is not specifically limited, The range of 25-100 micrometers is preferable.
If the thickness of the plastic film is less than 25 μm, curling or wrinkling is likely to occur when the infrared shielding film for window pasting of the present invention is adhered to a glass plate or the like. If it is thicker than this, when cutting the infrared shielding film for window pasting of the present invention to a desired size, it is difficult to cut with a cutter knife or the like, so the workability deteriorates, and the infrared shielding film for window pasting of the present invention This is not preferable because the manufacturing cost also increases.
本発明の窓貼用赤外線遮断フイルムに積層された赤外線遮断層は、本発明の窓貼用赤外線遮断フイルムに、優れた赤外線遮断性を発揮させる目的で、プラスチックフイルムの片面または両面に積層される層であり、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む層である。 The infrared shielding layer laminated on the infrared shielding film for window pasting of the present invention is laminated on one side or both sides of a plastic film for the purpose of exerting excellent infrared shielding properties on the infrared shielding film for window pasting of the present invention. It is a layer, and is a layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles.
本発明の窓貼用赤外線遮断フイルムは、該窓貼用赤外線遮断フイルムに積層されている赤外線遮断層を、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含むものとすることで、７８０ｎｍ以上のいわゆる赤外線領域の光を効果的に遮断することができ、本発明の窓貼用赤外線遮断フイルムが優れた赤外線遮断性を確実に発揮することができる。 The infrared shielding film for window sticking of this invention is what is called 780 nm or more by making the infrared rays shielding layer laminated | stacked on this infrared shielding film for window sticking contain resin, an infrared rays absorption pigment | dye, and metal oxide fine particles at least. Light in the infrared region can be effectively blocked, and the infrared blocking film for window sticking of the present invention can surely exhibit excellent infrared blocking properties.
そして、赤外線遮断層は、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む層であれば単層であってもよく、該赤外線遮断層を、樹脂と赤外線吸収色素とを少なくとも含む赤外線遮断層Ａと、樹脂と金属酸化物微粒子とを少なくとも含む赤外線遮断層Ｂとしても構わない。
尚、赤外線遮断層Ａ、及び赤外線遮断層Ｂについては、後述する。
The infrared blocking layer may be a single layer as long as it includes at least a resin, an infrared absorbing dye, and metal oxide fine particles. The infrared blocking layer includes an infrared blocking layer including at least a resin and an infrared absorbing dye. The infrared ray shielding layer B including at least the layer A and resin and metal oxide fine particles may be used.
The infrared blocking layer A and the infrared blocking layer B will be described later.
はじめに、前記赤外線遮断層が、単層の場合について述べる。
赤外線遮断層に使用する樹脂の種類は、特に制限なく使用することができ、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、塩化ビニル系樹脂、ポリエステル系樹脂、アクリル系樹脂、ウレタン系樹脂、ウレタンアクリレート系樹脂、メラミン系樹脂、メラミンアクリレート系樹脂、エポキシ系樹脂、エポキシアクリレート系樹脂等、各種公知の樹脂が使用でき、これらのいずれか１種、または２種以上の混合樹脂としてもよく、目的に応じて適宜選択すればよい。
また、上記樹脂のうち、粘度が高いものを使用した場合には、赤外線吸収色素、及び金属酸化物微粒子が樹脂中に均一に分散しづらいおそれがある為、粘度が低いものを使用することが好ましい。
First, the case where the infrared shielding layer is a single layer will be described.
The type of resin used for the infrared shielding layer can be used without any particular restriction. Polyethylene resin, polypropylene resin, polystyrene resin, vinyl chloride resin, polyester resin, acrylic resin, urethane resin, urethane Various known resins such as acrylate resins, melamine resins, melamine acrylate resins, epoxy resins, epoxy acrylate resins, etc. can be used, and any one of these or a mixture of two or more types may be used. It may be appropriately selected depending on the situation.
In addition, when a resin having a high viscosity is used among the above resins, it is difficult to uniformly disperse the infrared absorbing dye and the metal oxide fine particles in the resin. preferable.
そして、使用する樹脂は、熱可塑性樹脂、熱硬化性樹脂、紫外線硬化性樹脂等、特に制限なく使用することができる。特に、本発明の窓貼用赤外線遮断フイルムにハードコート性を付与したい場合には、赤外線遮断層に使用する樹脂として、熱硬化性樹脂や紫外線硬化性樹脂等の硬化性樹脂を使用すればよい。 The resin to be used can be used without particular limitation, such as a thermoplastic resin, a thermosetting resin, and an ultraviolet curable resin. In particular, when a hard coat property is to be imparted to the infrared shielding film for window pasting of the present invention, a curable resin such as a thermosetting resin or an ultraviolet curable resin may be used as the resin used for the infrared shielding layer. .
前記赤外線遮断層は、赤外線遮断性の効果を損なわない範囲で必要に応じて、帯電防止剤、紫外線吸収剤、光安定剤、熱安定剤、酸化防止剤、重合開始剤、硬化剤等の各種添加剤を１種類以上添加しても構わず、添加する各種添加剤の種類や添加量は、所望の目的に応じて適宜決定すればよい。 The infrared blocking layer may be various types such as an antistatic agent, an ultraviolet absorber, a light stabilizer, a heat stabilizer, an antioxidant, a polymerization initiator, and a curing agent as long as the infrared blocking effect is not impaired. One or more types of additives may be added, and the type and amount of various additives to be added may be appropriately determined according to the desired purpose.
前記赤外線遮断層に使用する赤外線吸収色素としては、特に制限なく使用することができ、ポリメチン系色素、フタロシアニン系色素、ナフタロシアニン系色素、金属錯体系色素、アミニウム系色素、イモニウム系色素、ジイモニウム系色素等、従来公知の赤外線吸収色素を使用することができる。また、赤外線遮断層に使用する際には、上記赤外線吸収色素のいずれか１種、または２種以上を混合して使用してもよく、赤外線吸収色素の種類等は、目的に応じて適宜選択すればよい。特に、所望の赤外線域を遮断することができる点からジイモニウム系色素を使用することが好ましい。 The infrared absorbing dye used in the infrared blocking layer can be used without particular limitation, and is a polymethine dye, phthalocyanine dye, naphthalocyanine dye, metal complex dye, aminium dye, imonium dye, diimonium dye. Conventionally known infrared absorbing dyes such as dyes can be used. Moreover, when using for an infrared shielding layer, you may use any 1 type of the said infrared absorption pigment | dye, or 2 or more types in mixture, The kind of infrared absorption pigment | dye etc. are suitably selected according to the objective. do it. In particular, it is preferable to use a diimonium dye from the viewpoint of blocking a desired infrared region.
また前記赤外線遮断層に使用する金属酸化物微粒子としては、酸化アルミニウム、酸化錫、酸化チタン、酸化亜鉛、酸化クロム、酸化インジウム、酸化銀等、従来公知の金属酸化物の微粒子の他、アンチモンがドープされた酸化錫微粒子（ＡＴＯ微粒子）、錫がドープされた酸化インジウム微粒子（ＩＴＯ微粒子）を使用することができ、目的に応じて適宜選択すればよい。特に、所望の可視光透過性と赤外線遮断性を得ることができる点からＩＴＯ微粒子を使用することが好ましい。 In addition, as the metal oxide fine particles used for the infrared ray shielding layer, antimony other than conventionally known metal oxide fine particles such as aluminum oxide, tin oxide, titanium oxide, zinc oxide, chromium oxide, indium oxide, silver oxide, etc. Doped tin oxide fine particles (ATO fine particles) and tin-doped indium oxide fine particles (ITO fine particles) can be used, and may be appropriately selected according to the purpose. In particular, it is preferable to use ITO fine particles from the viewpoint that desired visible light transmittance and infrared ray shielding properties can be obtained.
前記赤外線遮断層の樹脂、赤外線吸収色素、及び金属酸化物微粒子の重量比率は、本発明の窓貼用赤外線遮断フイルムが所望の可視光透過性、及び赤外線遮断性を発揮するものとする為には、樹脂：赤外線吸収色素：金属酸化物微粒子＝１００：１〜５：５０〜２００の範囲であることが好ましい。 The weight ratio of the resin of the infrared shielding layer, the infrared absorbing dye, and the metal oxide fine particles is such that the infrared shielding film for window pasting of the present invention exhibits desired visible light transparency and infrared shielding properties. Is preferably in the range of resin: infrared absorbing dye: metal oxide fine particles = 100: 1-5: 50-200.
前記該赤外線遮断層の厚さは、０．２〜５μｍの範囲が好ましく、赤外線遮断層を積層する方法は、グラビアコート法、リバースコート法、ダイコート法、マイクログラビアコート（リバースグラビアコート）法等、従来公知のコーティング方法が使用でき、目的に応じて適宜選択すればよい。 The thickness of the infrared blocking layer is preferably in the range of 0.2 to 5 μm, and the method of laminating the infrared blocking layer is a gravure coating method, a reverse coating method, a die coating method, a micro gravure coating (reverse gravure coating) method, or the like. A conventionally known coating method can be used and may be appropriately selected according to the purpose.
また、赤外線遮断層の屈折率は、本発明の窓貼用赤外線遮断フイルムが所望の可視光透過性を発揮するものとする為には、１．４５〜１．８の範囲が好ましい。 Further, the refractive index of the infrared shielding layer is preferably in the range of 1.45 to 1.8 so that the infrared shielding film for window sticking of the present invention exhibits desired visible light transmittance.
次に、前記赤外線遮断層を、赤外線遮断層Ａと赤外線遮断層Ｂとにする場合について述べる。 Next, the case where the infrared blocking layer is an infrared blocking layer A and an infrared blocking layer B will be described.
赤外線遮断層Ａは、樹脂と赤外線吸収色素とを少なくとも含む層であり、使用する樹脂と必要に応じて添加する各種添加剤は、前記赤外線遮断層に使用するものと同様のものが使用できる。 The infrared shielding layer A is a layer containing at least a resin and an infrared absorbing dye, and the same resin as that used for the infrared shielding layer can be used as the resin to be used and various additives added as necessary.
赤外線遮断層Ａの厚さは、０．５〜３μｍの範囲が好ましい。
赤外線遮断層Ａの厚さが、上記範囲でないと、赤外線遮断層Ｂの厚さ、屈折率、及び使用する樹脂に対する金属酸化物微粒子の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The thickness of the infrared shielding layer A is preferably in the range of 0.5 to 3 μm.
If the thickness of the infrared shielding layer A is not within the above range, the thickness and refractive index of the infrared shielding layer B, the weight ratio of the metal oxide fine particles to the resin used, the thickness of the optical adjustment layer, the refractive index, Even if the weight ratio of the inorganic fine particles to the resin to be used is adjusted, the infrared shielding film and the visible light transmittance of the infrared shielding film for window pasting of the present invention are the desired infrared shielding property and the desired visible light transmittance. This is not preferable because there is a risk that it may not be possible.
前記赤外線遮断層Ａに使用する樹脂に対する赤外線吸収色素の重量比率は、１〜５％の範囲であることが好ましい。
赤外線吸収色素の重量比率が、上記範囲でないと、赤外線遮断層Ｂの厚さ、屈折率、及び使用する樹脂に対する金属酸化物微粒子の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The weight ratio of the infrared absorbing dye to the resin used for the infrared blocking layer A is preferably in the range of 1 to 5%.
If the weight ratio of the infrared absorbing dye is not within the above range, the thickness and refractive index of the infrared shielding layer B, the weight ratio of the metal oxide fine particles to the resin used, the thickness of the optical adjustment layer, the refractive index, and Even if the weight ratio of the inorganic fine particles to the resin to be used is adjusted, the infrared shielding film and the visible light transmittance of the infrared shielding film for window pasting of the present invention are the desired infrared shielding property and the desired visible light transmittance. This is not preferable because it may not be possible to do so.
赤外線遮断層Ａを積層する方法は、前記赤外線遮断層を積層する従来公知のコーティング方法と同様のコーティング方法が使用でき、目的に応じて適宜選択すればよい。 As a method for laminating the infrared shielding layer A, a coating method similar to a conventionally known coating method for laminating the infrared shielding layer can be used, and may be appropriately selected depending on the purpose.
また、赤外線遮断層Ａの屈折率は、１．５〜１．７の範囲とすることが好ましい。
赤外線遮断層Ａの屈折率が上記範囲でないと、赤外線遮断層Ｂの厚さ、屈折率、及び使用する樹脂に対する金属酸化物微粒子の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The refractive index of the infrared shielding layer A is preferably in the range of 1.5 to 1.7.
If the refractive index of the infrared shielding layer A is not within the above range, the thickness and refractive index of the infrared shielding layer B, the weight ratio of the metal oxide fine particles to the resin used, the thickness of the optical adjustment layer, the refractive index, and Even if the weight ratio of the inorganic fine particles to the resin to be used is adjusted, the infrared shielding film and the visible light transmittance of the infrared shielding film for window pasting of the present invention are the desired infrared shielding property and the desired visible light transmittance. This is not preferable because it may not be possible to do so.
赤外線遮断層Ｂは、樹脂と金属酸化物微粒子とを少なくとも含む層であり、使用する樹脂と必要に応じて添加する各種添加剤は、前記赤外線遮断層に使用するものと同様のものが使用できる。 The infrared shielding layer B is a layer containing at least a resin and metal oxide fine particles, and the same resin as that used for the infrared shielding layer can be used as the resin to be used and various additives added as necessary. .
赤外線遮断層Ｂの厚さは、１〜３μｍの範囲が好ましい。
赤外線遮断層Ｂの厚さが、上記範囲でないと、赤外線遮断層Ａの厚さ、屈折率、及び使用する樹脂に対する赤外線吸収色素の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The thickness of the infrared shielding layer B is preferably in the range of 1 to 3 μm.
If the thickness of the infrared shielding layer B is not within the above range, the thickness, refractive index, and weight ratio of the infrared absorbing dye to the resin used, the thickness of the optical adjustment layer, the refractive index, and Even if the weight ratio of the inorganic fine particles to the resin to be used is adjusted, the infrared shielding film and the visible light transmittance of the infrared shielding film for window pasting of the present invention are the desired infrared shielding property and the desired visible light transmittance. This is not preferable because it may not be possible to do so.
また、前記赤外線遮断層Ｂの樹脂に対する金属酸化物微粒子の重量比率は、５０〜２００％の範囲であることが好ましい。
前記赤外線遮断層Ｂに使用する樹脂に対する金属酸化物微粒子素の重量比率が、上記範囲でないと、赤外線遮断層Ａの厚さ、屈折率、及び使用する樹脂に対する赤外線吸収色素の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The weight ratio of the metal oxide fine particles to the resin of the infrared ray blocking layer B is preferably in the range of 50 to 200%.
If the weight ratio of the metal oxide fine particles to the resin used for the infrared blocking layer B is not within the above range, the thickness of the infrared blocking layer A, the refractive index, the weight ratio of the infrared absorbing dye to the resin used, and optical Even if the thickness of the adjustment layer, the refractive index, and the weight ratio of the inorganic fine particles to the resin to be used are adjusted, the infrared shielding film and the visible light transmission property of the infrared shielding film for window pasting of the present invention can be obtained as desired infrared rays. Since there exists a possibility that it may become impossible to set it as blocking | blocking property and desired visible light transmittance, it is not preferable.
赤外線遮断層Ｂを積層する方法は、前記赤外線遮断層を積層する従来公知のコーティング方法と同様のコーティング方法が使用でき、目的に応じて適宜選択すればよい。 The method for laminating the infrared shielding layer B can be the same coating method as a conventionally known coating method for laminating the infrared shielding layer, and may be appropriately selected depending on the purpose.
また、赤外線遮断層Ｂの屈折率は、１．５〜１．８の範囲とすることが好ましい。
赤外線遮断層Ｂの屈折率が上記範囲でないと、赤外線遮断層Ａの厚さ、屈折率、及び使用する樹脂に対する赤外線吸収色素の重量比率や、光学調整層の厚さ、屈性率、及び使用する樹脂に対する無機微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの赤外線遮断性、及び可視光透過性を、所望の赤外線遮断性、及び所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The refractive index of the infrared blocking layer B is preferably in the range of 1.5 to 1.8.
If the refractive index of the infrared blocking layer B is not within the above range, the thickness and refractive index of the infrared blocking layer A, the weight ratio of the infrared absorbing dye to the resin used, the thickness of the optical adjustment layer, the refractive index, and the use Even if the weight ratio of the inorganic fine particles to the resin to be adjusted is adjusted, the infrared blocking film and the visible light transmission property of the infrared blocking film for window pasting of the present invention are set to the desired infrared blocking property and the desired visible light transmission property. This is not preferable because there is a risk that it may not be possible.
赤外線遮断層Ａ、及び赤外線遮断層Ｂは、いずれもプラスチックフイルムの片面上に積層されていてもよいし、赤外線遮断層Ａが、プラスチックフイルムの片面に積層され、赤外線遮断層Ｂが、プラスチックフイルムの他の片面（赤外線遮断層Ａが積層されている側と反対側の面）に積層されていても構わない。
赤外線遮断層Ａ、及び赤外線遮断層Ｂが、いずれもプラスチックフイルムの片面上に積層されている場合、赤外線遮断層Ａ、及び赤外線遮断層Ｂのいずれの層が下層（プラスチックフイルム側）となってもよく、その順序は所望の目的に応じて適宜選択すればよい。
Both the infrared shielding layer A and the infrared shielding layer B may be laminated on one side of the plastic film, the infrared shielding layer A is laminated on one side of the plastic film, and the infrared shielding layer B is made of the plastic film. You may laminate | stack on the other one side (surface on the opposite side to the side on which the infrared rays shielding layer A is laminated | stacked).
When both the infrared shielding layer A and the infrared shielding layer B are laminated on one side of the plastic film, any one of the infrared shielding layer A and the infrared shielding layer B becomes a lower layer (plastic film side). The order may be appropriately selected according to the desired purpose.
赤外線遮断層を、赤外線遮断層Ａと赤外線遮断層Ｂとにする場合に、本発明の窓貼用赤外線遮断フイルムの代表的な構成を下記（６）〜（１２）に示す。尚、本発明の窓貼用赤外線遮断フイルムは、下記構成に限らない。
（６）プラスチックフイルム／赤外線遮断層Ａ／赤外線遮断層Ｂ／光学調整層
（７）プラスチックフイルム／光学調整層／赤外線遮断層Ａ／赤外線遮断層Ｂ
（８）プラスチックフイルム／赤外線遮断層Ｂ／赤外線遮断層Ａ／光学調整層
（９）赤外線遮断層Ａ／プラスチックフイルム／赤外線遮断層Ｂ／光学調整層
（１０）赤外線遮断層Ｂ／プラスチックフイルム／光学調整層／赤外線遮断層Ａ
（１１）光学調整層／プラスチックフイルム／赤外線遮断層Ａ／赤外線遮断層Ｂ
（１２）光学調整層／プラスチックフイルム／赤外線遮断層Ａ／赤外線遮断層Ｂ／光学調整層
When the infrared blocking layer is the infrared blocking layer A and the infrared blocking layer B, typical configurations of the window blocking infrared blocking film of the present invention are shown in the following (6) to (12). In addition, the infrared shielding film for window sticking of this invention is not restricted to the following structure.
(6) Plastic film / infrared blocking layer A / infrared blocking layer B / optical adjustment layer (7) Plastic film / optical adjustment layer / infrared blocking layer A / infrared blocking layer B
(8) Plastic film / Infrared blocking layer B / Infrared blocking layer A / Optical adjustment layer (9) Infrared blocking layer A / Plastic film / Infrared blocking layer B / Optical adjustment layer (10) Infrared blocking layer B / Plastic film / Optical Adjustment layer / infrared shielding layer A
(11) Optical adjustment layer / Plastic film / Infrared shielding layer A / Infrared shielding layer B
(12) Optical adjustment layer / Plastic film / Infrared shielding layer A / Infrared shielding layer B / Optical adjustment layer
本発明の窓貼用赤外線遮断フイルムに積層されている光学調整層は、光の屈折を利用して本発明の窓貼用赤外線遮断フイルムが所望の可視光透過性を発揮させる目的で積層される層である。 The optical adjustment layer laminated on the infrared shielding film for window sticking of the present invention is laminated for the purpose of exhibiting a desired visible light transmittance by utilizing the refraction of light. Is a layer.
本発明の窓貼用赤外線遮断フイルムは、前記本発明の窓貼用赤外線遮断フイルムの代表的な構成（１）〜（１２）で示したとおり、プラスチックフイルムの片面上に赤外線遮断層、及び光学調整層が積層されている場合、赤外線遮断層、及び光学調整層のいずれの層が下層（プラスチックフイルム側）となってもよく、その順序は所望の目的に応じて適宜選択すればよい。 The infrared shielding film for window sticking of the present invention has an infrared shielding layer on one side of the plastic film and optical as shown in the typical constitutions (1) to (12) of the infrared shielding film for window sticking of the present invention. When the adjustment layer is laminated, any one of the infrared shielding layer and the optical adjustment layer may be a lower layer (on the plastic film side), and the order may be appropriately selected according to a desired purpose.
前記光学調整層は、少なくとも、樹脂と無機微粒子とを含む層であることが好ましく、該光学調整層に使用する樹脂は、特に制限なく使用することができ、ポリエチレン系樹脂、ポリプロピレン系樹脂、ポリスチレン系樹脂、塩化ビニル系樹脂、ポリエステル系樹脂、アクリル系樹脂、ウレタン系樹脂、ウレタンアクリレート系樹脂、メラミン系樹脂、メラミンアクリレート系樹脂、エポキシ系樹脂、エポキシアクリレート系樹脂、シロキサン系樹脂等、従来公知の樹脂が使用できる。また、光学調整層に使用する際には、上記樹脂のいずれか１種、または２種以上を混合して使用してもよく、使用する樹脂の種類等は、目的に応じて適宜選択すればよい。 The optical adjustment layer is preferably a layer containing at least a resin and inorganic fine particles, and the resin used for the optical adjustment layer can be used without any particular limitation, such as polyethylene resin, polypropylene resin, polystyrene. Resin, vinyl chloride resin, polyester resin, acrylic resin, urethane resin, urethane acrylate resin, melamine resin, melamine acrylate resin, epoxy resin, epoxy acrylate resin, siloxane resin, etc. Can be used. Moreover, when using for an optical adjustment layer, you may use any 1 type of the said resin, or 2 or more types mixed, and if the kind etc. of resin to be used are selected suitably according to the objective. Good.
特に、光学調整層は、可視光透過性の点から該光学調整層に使用する樹脂に、シロキサン系樹脂を使用することが好ましく、さらに水酸基を有するシロキサン系樹脂とすれば、本発明の窓貼用赤外線遮断フイルムが、防汚効果を発揮することができる為、より好ましい。尚、水酸基を有するシロキサン系樹脂を使用した際の防汚効果については、後述する。 In particular, the optical adjustment layer preferably uses a siloxane-based resin as the resin used for the optical adjustment layer from the viewpoint of visible light transmission, and if the siloxane-based resin further has a hydroxyl group, the window paste of the present invention is used. The infrared shielding film for use is more preferable because it can exhibit an antifouling effect. In addition, the antifouling effect at the time of using the siloxane resin which has a hydroxyl group is mentioned later.
また、光学調整層に使用する無機微粒子は、特に制限なく使用することができ、シリカ微粒子、アルミナ微粒子、チタニア微粒子、炭酸カルシウム微粒子、炭酸マグネシウム微粒子、リン酸カルシウム微粒子、酸化セリウム微粒子、ＡＴＯ微粒子、ＩＴＯ微粒子等、従来公知の無機微粒子が使用でき、使用する無機微粒子の種類は、目的に応じて適宜選択すればよい。特に光学調整層の屈折率を容易に所望の屈折率とすることができる点からシリカ微粒子が好ましい。 Further, the inorganic fine particles used in the optical adjustment layer can be used without any particular limitation. Silica fine particles, alumina fine particles, titania fine particles, calcium carbonate fine particles, magnesium carbonate fine particles, calcium phosphate fine particles, cerium oxide fine particles, ATO fine particles, ITO fine particles. Conventional inorganic fine particles can be used, and the type of inorganic fine particles to be used may be appropriately selected according to the purpose. In particular, silica fine particles are preferable because the refractive index of the optical adjustment layer can be easily set to a desired refractive index.
また、光学調整層に使用する樹脂にシロキサン系樹脂を使用し、かつ使用する無機微粒子にシリカ微粒子使用した場合には、本発明の窓貼用赤外線遮断フイルムの可視光透過率を８０％以上とすることができる為、より好ましい。 Further, when a siloxane-based resin is used as the resin used for the optical adjustment layer and silica fine particles are used as the inorganic fine particles used, the visible light transmittance of the infrared shielding film for window pasting of the present invention is 80% or more. This is more preferable.
光学調整層の屈折率は、１．３５〜１．５３の範囲が好ましい。
光学調整層の屈折率が、上記範囲でないと、赤外線遮断層Ａの厚さ、屈折率、及び使用する樹脂に対する赤外線吸収色素の重量比率や、赤外線遮断層Ｂの厚さ、屈性率、及び使用する樹脂に対する金属酸化物微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの可視光透過性を所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The refractive index of the optical adjustment layer is preferably in the range of 1.35 to 1.53.
If the refractive index of the optical adjustment layer is not within the above range, the thickness and refractive index of the infrared blocking layer A, the weight ratio of the infrared absorbing dye to the resin used, the thickness of the infrared blocking layer B, the refractive index, and Even if the weight ratio of the metal oxide fine particles to the resin to be used is adjusted, the visible light transmittance of the infrared shielding film for window pasting of the present invention may not be set to a desired visible light transmittance. Absent.
また、光学調整層の屈折率を所望の屈折率とするには、使用する無機微粒子の種類、大きさ、及び樹脂に対する無機微粒子の重量比を適宜調整すればよい。 Further, in order to set the refractive index of the optical adjustment layer to a desired refractive index, the kind and size of the inorganic fine particles to be used and the weight ratio of the inorganic fine particles to the resin may be adjusted as appropriate.
光学調整層の屈折率は、該光学調整層と接する層の屈折率よりも屈折率を低くすれば、本発明の窓貼用赤外線遮断フイルムの可視光透過性を所望の可視光透過性とすることができる為、好ましい。
また、光学調整層と接する層は、本発明の窓貼用赤外線遮断フイルムが所望の可視光透過性を得る為に、光学調整層と接する層の屈折率が１．５〜１．８の範囲であり、かつ光学調整層と接する層の厚さは、０．２〜２．５μｍの範囲が好ましい。
尚、光学調整層と接する層が、前記赤外線遮断層（赤外線遮断層Ａ、及び赤外線遮断層Ｂを含む）である場合には、該赤外線遮断層の屈折率、及び厚さは上記範囲となる。
If the refractive index of the optical adjustment layer is lower than the refractive index of the layer in contact with the optical adjustment layer, the visible light transmission property of the infrared shielding film for window pasting of the present invention is made the desired visible light transmission property. This is preferable because it can be performed.
In addition, the layer in contact with the optical adjustment layer has a refractive index of 1.5 to 1.8 in the layer in contact with the optical adjustment layer in order that the infrared shielding film for window pasting of the present invention obtains desired visible light transmittance. The thickness of the layer in contact with the optical adjustment layer is preferably in the range of 0.2 to 2.5 μm.
When the layer in contact with the optical adjustment layer is the infrared blocking layer (including the infrared blocking layer A and the infrared blocking layer B), the refractive index and thickness of the infrared blocking layer are in the above range. .
光学調整層の厚さは、０．１〜０．３μｍの範囲が好ましい。
光学調整層の厚さが、上記範囲でないと、赤外線遮断層Ａの厚さ、屈折率、及び使用する樹脂に対する赤外線吸収色素の重量比率や、赤外線遮断層Ｂの厚さ、屈性率、及び使用する樹脂に対する金属酸化物微粒子の重量比率を調整したとしても、本発明の窓貼用赤外線遮断フイルムの可視光透過性を所望の可視光透過性とすることができなくなるおそれがある為、好ましくない。
The thickness of the optical adjustment layer is preferably in the range of 0.1 to 0.3 μm.
If the thickness of the optical adjustment layer is not within the above range, the thickness and refractive index of the infrared blocking layer A, the weight ratio of the infrared absorbing dye to the resin used, the thickness of the infrared blocking layer B, the refractive index, and Even if the weight ratio of the metal oxide fine particles to the resin to be used is adjusted, the visible light transmittance of the infrared shielding film for window pasting of the present invention may not be set to a desired visible light transmittance. Absent.
また、光学調整層を積層する方法は、グラビアコート法、リバースコート法、ダイコート法、マイクログラビアコート（リバースグラビアコート）法等、従来公知のコーティング方法が使用でき、所望の目的に応じて適宜選択すればよい。 In addition, as a method of laminating the optical adjustment layer, a conventionally known coating method such as a gravure coating method, a reverse coating method, a die coating method, a micro gravure coating (reverse gravure coating) method can be used, and it is appropriately selected according to a desired purpose. do it.
そして、光学調整層に使用する樹脂として水酸基を有するシロキサン系樹脂を使用した光学調整層を、本発明の窓貼用赤外線遮断フイルムの最表層に積層すれば、該光学調整層は、優れた親水性を有する層となり、大気中の水分子を吸着して光学調整層表面（他の層と接してる側と反対側の面）に水分子膜が形成される。
その結果、該光学調整層が最表層に積層された本発明の窓貼用赤外線遮断フイルムは、光学調整層上（水分子膜上）にチリや埃等の汚れ物質が付着した場合であっても、水を使用すれば容易に光学調整層上から汚れ物質を除去することができるという防汚効果を発揮することができる。
And if an optical adjustment layer using a siloxane-based resin having a hydroxyl group as a resin used for the optical adjustment layer is laminated on the outermost layer of the infrared shielding film for window pasting of the present invention, the optical adjustment layer has an excellent hydrophilic property. It becomes a layer having a property, and adsorbs water molecules in the atmosphere to form a water molecule film on the surface of the optical adjustment layer (the surface opposite to the side in contact with the other layer).
As a result, the infrared shielding film for window sticking of the present invention in which the optical adjustment layer is laminated on the outermost layer is a case where dirt such as dust or dust adheres on the optical adjustment layer (on the water molecule film). However, if water is used, the antifouling effect that the dirt substance can be easily removed from the optical adjustment layer can be exhibited.
このように、光学調整層に使用する樹脂として水酸基を有するシロキサン系樹脂を使用した光学調整層が最表層に積層された本発明の窓貼用赤外線遮断フイルムは、本発明の窓貼用赤外線遮断フイルムは前記優れた可視光透過性、及び赤外線遮断性を有することはもちろん、優れた防汚効果をさらに発揮するものとなる。
具体的には、ＪＩＳ Ｒ ３２５７に準拠して測定した場合に、水の接触角が１０°以下であれば優れた親水性を有しているといえ、優れた防汚効果を発揮することができる。
Thus, the infrared shielding film for window sticking of the present invention in which the optical adjustment layer using a siloxane-based resin having a hydroxyl group as the resin used for the optical adjustment layer is laminated on the outermost layer is the infrared shielding film for window sticking of the present invention. The film not only has the above-mentioned excellent visible light transmittance and infrared ray blocking property, but also exhibits an excellent antifouling effect.
Specifically, when measured according to JIS R 3257, if the contact angle of water is 10 ° or less, it can be said to have excellent hydrophilicity and exhibit an excellent antifouling effect. it can.
本発明の窓貼用赤外線遮断フイルムは、本発明の窓貼用赤外線遮断フイルムの可視光透過性を所望の可視光透過性とする為には、前記に示した本発明の窓貼用赤外線遮断フイルムに代表的な構成の（１）、（３）、（４）、（５）、（６）、（８）、（９）、（１１）、及び（１２）の構成のように、本発明の窓貼用赤外線遮断フイルムの最表層に光学調整層が積層されていることが好ましい。
また、本発明の窓貼用赤外線遮断フイルムの可視光透過性を所望の可視光透過性とする為には、本発明の窓貼用赤外線遮断フイルムを、本発明の窓貼用赤外線遮断フイルムに積層された赤外線遮断層を赤外線遮断層Ａと赤外線遮断層Ｂとし、かつ前記光学調整層が、前記に示した構成の（６）、（７）、（８）、（９）、及び（１２）の構成のように、赤外線遮断層Ｂ層が積層されている側の面に積層されたものとすることがより好ましく、前記光学調整層が、（６）、（９）、及び（１２）の構成のように赤外線遮断層Ｂと接するようにして積層されていれば、本発明の窓貼用赤外線遮断フイルムの可視光透過率を、確実に７５％以上とすることができ、優れた可視光透過性を発揮することができる為、万全である。
In order to make the visible light transmittance of the infrared shielding film for window sticking of the present invention desired visible light transmittance, the infrared shielding film for window sticking of the present invention described above is used. As in the configurations of (1), (3), (4), (5), (6), (8), (9), (11), and (12), which are typical configurations of films, It is preferable that the optical adjustment layer is laminated | stacked on the outermost layer of the infrared shielding film for window sticking of invention.
Moreover, in order to make the visible light transmittance of the infrared shielding film for window sticking of the present invention desired visible light transmittance, the infrared shielding film for window sticking of the present invention is used as the infrared shielding film for window sticking of the present invention. The laminated infrared blocking layer is an infrared blocking layer A and an infrared blocking layer B, and the optical adjustment layer is configured as described in (6), (7), (8), (9), and (12). It is more preferable that the infrared shielding layer B layer is laminated on the surface on which the infrared shielding layer B layer is laminated, and the optical adjustment layer comprises (6), (9), and (12). If it is laminated so as to be in contact with the infrared ray shielding layer B as in the structure of, the visible light transmittance of the infrared ray shielding film for window pasting of the present invention can be surely set to 75% or more, and excellent visible It is perfect because it can exhibit light transmittance.
また、本発明の窓貼用赤外線遮断フイルムは、必要に応じて、本発明の窓貼用赤外線遮断フイルムに積層されている赤外線遮断層（赤外線遮断層Ａ、及び赤外線遮断層Ｂを含む）や光学調整層の各層間の密着力を強くする為のアンカーコート層や易接着コート層、本発明の窓貼用赤外線遮断フイルムに意匠性を付与する為の着色層や印刷層、及び本発明の窓貼用赤外線遮断フイルムにハードコート性や金属光沢性等の各種機能性を付与する為のハードコート層や金属薄膜層等の各種機能層が、積層されていても構わない。 Moreover, the infrared shielding film for window sticking of this invention is the infrared shielding layer (including infrared shielding layer A and infrared shielding layer B) laminated | stacked on the infrared shielding film for window sticking of this invention as needed. Anchor coating layer and easy adhesion coating layer for strengthening the adhesion between each layer of the optical adjustment layer, colored layer and printing layer for imparting design to the infrared shielding film for window pasting of the present invention, and the present invention Various functional layers such as a hard coat layer and a metal thin film layer for imparting various functions such as hard coat properties and metal glossiness to the infrared shielding film for window sticking may be laminated.
本発明の窓貼用赤外線遮断フイルムは、ガラス板等の表面に貼着した積層品を、車両のウィンドウガラス、建物の窓ガラス、及びショーウィンドウ用のガラス板等の可視光透過性と赤外線遮断性の両方を要求される用途で使用することができる。 The infrared shielding film for window sticking of the present invention is a laminated product stuck on the surface of a glass plate or the like, visible light transmission and infrared ray shielding such as a vehicle window glass, a building window glass, and a glass plate for a show window. It can be used in applications where both sexes are required.
本発明の窓貼用赤外線遮断フイルムをガラス板等に貼着する方法は、特に制限なく使用することができ、本発明の窓貼用赤外線遮断フイルムとガラス板等との間に接着剤や粘着剤からなる接着層や粘着層を介して貼着する方法等、目的に応じて適宜選択すればよい。 The method of sticking the infrared shielding film for window sticking of the present invention to a glass plate or the like can be used without any particular limitation, and an adhesive or an adhesive between the infrared shielding film for window sticking of the present invention and the glass plate or the like. What is necessary is just to select suitably according to the objectives, such as the method of sticking through the adhesive layer and adhesive layer which consist of an agent.
尚、前記の通り、本発明の窓貼用赤外線遮断フイルムは、プラスチックフイルムの片面または両面に、樹脂、赤外線吸収色素、及び金属酸化物微粒子が少なくとも含まれた赤外線遮断層が積層されたものであり、上記積層品を得る場合に、金属酸化物微粒子が含まれた接着剤や粘着剤を使用する必要がない。その為、本発明の窓貼用赤外線遮断フイルムを使用して得た積層品は、該積層品の日射透過率を測定する箇所によって日射透過率のバラつきが生じることがなくなる。 As described above, the infrared shielding film for window pasting of the present invention is obtained by laminating an infrared shielding layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles on one side or both sides of a plastic film. There is no need to use an adhesive or pressure-sensitive adhesive containing metal oxide fine particles when obtaining the laminated product. Therefore, the laminated product obtained by using the infrared shielding film for window pasting of the present invention does not vary in the solar transmittance depending on the location where the solar transmittance of the laminated product is measured.
以上のように、本発明の窓貼用赤外線遮断フイルムは、プラスチックフイルムの片面または両面に、樹脂、赤外線吸収色素、及び金属酸化物微粒子を少なくとも含む赤外線遮断層、及び光学調整層が、少なくとも積層されていることを特徴とする窓貼用赤外線遮断フイルムである為、優れた可視光透過性と赤外線遮断性を兼ね備えたものである。 As described above, the infrared shielding film for window sticking of the present invention has at least an infrared shielding layer containing at least a resin, an infrared absorbing dye, and metal oxide fine particles, and an optical adjustment layer laminated on one side or both sides of a plastic film. Since it is an infrared shielding film for window sticking characterized by being made, it has excellent visible light transmittance and infrared shielding properties.
また、本発明の窓貼用赤外線遮断フイルムは、本発明の窓貼用赤外線遮断フイルムに積層された赤外線遮断層を３層以上積層していない為、赤外線遮断層とプラスチックフイルムとの密着力、及び赤外線遮断層と光学調整層との密着力が強く、赤外線遮断層、または光学調整層が本発明の窓貼用赤外線遮断フイルム上から剥がれることなく、優れた赤外線遮断性を確実に長く維持することができるものである。
また本発明の窓貼用赤外線遮断フイルムを製造する際に、従来よりも製造工程を少なくすることができる為、効率よく本発明の窓貼用赤外線遮断フイルムを製造することができる。
Moreover, since the infrared shielding film for window pasting of the present invention does not laminate three or more infrared shielding layers laminated on the infrared shielding film for window pasting of the present invention, the adhesion between the infrared shielding layer and the plastic film, In addition, the adhesion between the infrared shielding layer and the optical adjustment layer is strong, and the infrared shielding layer or the optical adjustment layer does not peel off from the infrared shielding film for window pasting of the present invention, and the excellent infrared shielding property is reliably maintained for a long time. It is something that can be done.
Moreover, when manufacturing the infrared shielding film for window sticking of this invention, since a manufacturing process can be reduced rather than before, the infrared shielding film for window sticking of this invention can be manufactured efficiently.
そして、本発明の窓貼用赤外線遮断フイルムは、本発明の窓貼用赤外線遮断フイルムに積層された赤外線遮断層を、赤外線吸収色素を少なくとも含む赤外線遮断層Ａ、及び金属酸化物微粒子を少なくとも含む赤外線遮断層Ｂとすれば、可視光透過性、及び赤外線遮断性の点からより好ましく、さらに光学調整層が、前記赤外線遮断層Ｂ層上に積層されたものとすれば万全である。 And the infrared shielding film for window sticking of this invention contains the infrared shielding layer laminated | stacked on the infrared shielding film for window sticking of this invention, the infrared shielding layer A which contains an infrared absorption pigment | dye at least, and a metal oxide microparticle at least. The infrared blocking layer B is more preferable from the viewpoints of visible light transmittance and infrared blocking properties, and it is perfect if the optical adjustment layer is laminated on the infrared blocking layer B layer.
さらに、光学調整層が最表層に積層された本発明の窓貼用赤外線遮断フイルムは、該光学調整層を、少なくとも、水酸基を有するシロキサン系樹脂を含むものとすれば、前記優れた可視光透過性、及び優れた赤外線遮断性を有することはもちろん、優れた防汚性効果もさらに発揮するものとなり、そして、該光学調整層を、少なくとも、水酸基を有するシロキサン系樹脂、及びシリカ微粒子を含むものとすれば、本発明の窓貼用赤外線遮断フイルムの可視光透過率を８０％以上とすることができ、優れた可視光透過性をさらに優れたものとすることができ、防汚効果も発揮することができ、万全である。 Furthermore, in the infrared shielding film for window sticking of the present invention in which the optical adjustment layer is laminated on the outermost layer, if the optical adjustment layer contains at least a siloxane-based resin having a hydroxyl group, the excellent visible light transmission is achieved. And an excellent anti-fouling effect as well as an excellent infrared shielding property, and the optical adjustment layer contains at least a siloxane-based resin having a hydroxyl group and silica fine particles Then, the visible light transmittance of the infrared shielding film for window pasting of the present invention can be 80% or more, the excellent visible light transmittance can be further improved, and the antifouling effect is also exhibited. Can be perfect.
［実施例１］
以下の工程を順に行い、プラスチックフイルムの片面に、赤外線遮断層Ａが積層され、プラスチックフイルムの他の片面に、赤外線遮断層Ｂ、及び光学調整層が積層された実施例１の本発明の窓貼用赤外線遮断フイルムを得た。
（工程１）厚さ５０μｍのポリエチレンテレフタレートフイルムの片面に、アクリル系樹脂と赤外線吸収色素としてジイモニウム系色素を含む混合塗料（日本カーリット株式会社製 商品名：サンバリアーＮ１−Ａ）をマイクログラビアコート法でコーティングし厚さ１．０μｍの赤外線遮断層Ａを積層した。
尚、アクリル系樹脂に対するジイモニウム系色素の重量比率は３％あり、赤外線遮断層Ａの屈折率は１．５であった。
（工程２）上記ポリエチレンテレフタレートフィルムの他の片面に、ウレタンアクリレート系樹脂（三菱マテリアル株式会社製 商品名：ＰＩ−３）、及び金属酸化物微粒子としてＩＴＯ微粒子を含む混合塗料をマイクログラビアコート法でコーティングし厚さ１．５μｍの赤外線遮断層Ｂを積層した。
尚、ウレタンアクリレート樹脂に対するＩＴＯ微粒子の重量比率は１００％であり、赤外線遮断層Ｂの屈折率は、１．７であった。
（工程３）上記赤外線遮断層Ｂ上に、水酸基を有するシロキサン系樹脂、及びシリカ微粒子を含む混合塗料（司化研株式会社製 商品名：ＤＭコート）をマイクログラビアコート法でコーティングし厚さ０．２μｍの光学調整層を積層した。
尚、光学調整層の屈折率は、１．４９であった。
[Example 1]
The window of Example 1 of the present invention in which the following steps are performed in order, the infrared shielding layer A is laminated on one side of the plastic film, and the infrared shielding layer B and the optical adjustment layer are laminated on the other side of the plastic film. An infrared shielding film for pasting was obtained.
(Step 1) A microgravure coating method using a mixed paint (trade name: Sunbarrier N1-A, manufactured by Nippon Carlit Co., Ltd.) containing an acrylic resin and a diimonium dye as an infrared absorbing dye on one side of a 50 μm thick polyethylene terephthalate film And an infrared shielding layer A having a thickness of 1.0 μm was laminated.
The weight ratio of the diimonium dye to the acrylic resin was 3%, and the refractive index of the infrared shielding layer A was 1.5.
(Step 2) On the other surface of the polyethylene terephthalate film, a mixed paint containing urethane acrylate resin (trade name: PI-3, manufactured by Mitsubishi Materials Corporation) and ITO fine particles as metal oxide fine particles is obtained by a micro gravure coating method. The coated infrared shielding layer B having a thickness of 1.5 μm was laminated.
The weight ratio of the ITO fine particles to the urethane acrylate resin was 100%, and the refractive index of the infrared shielding layer B was 1.7.
(Step 3) On the infrared ray blocking layer B, a mixed paint (trade name: DM coat, manufactured by Shukaken Co., Ltd.) containing a siloxane-based resin having a hydroxyl group and silica fine particles is coated by a micro gravure coating method to have a thickness of 0 A 2 μm optical adjustment layer was laminated.
The refractive index of the optical adjustment layer was 1.49.
［実施例２］
実施例１の（工程３）で使用した混合塗料（司化研株式会社製 商品名：ＤＭコート）にかえて、ウレタンアクリレート樹脂とＩＴＯ微粒子とからなる混合塗料を使用したこと以外は実施例１と同様にして、実施例２の本発明の窓貼用赤外線遮断フイルムを得た。
[Example 2]
Example 1 except that a mixed paint composed of urethane acrylate resin and ITO fine particles was used in place of the mixed paint used in (Step 3) of Example 1 (trade name: DM coat manufactured by Shukaken Co., Ltd.). In the same manner as described above, an infrared shielding film for window sticking of Example 2 of the present invention was obtained.
［比較例１］
実施例１の（工程２）で使用した混合塗料にかえて、ウレタンアクリレート樹脂のみ（ＩＴＯ微粒子を含んでいない）を使用したこと、及び実施例１の（工程３）を行わなかったこと以外は実施例１と同様にして、比較例１の窓貼用赤外線遮断フイルムを得た。
[Comparative Example 1]
In place of the mixed paint used in (Step 2) of Example 1, only the urethane acrylate resin (not containing ITO fine particles) was used, and (Step 3) of Example 1 was not performed. In the same manner as in Example 1, the infrared shielding film for window pasting of Comparative Example 1 was obtained.
（可視光透過率の測定）
実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルム、及び比較例１で得た窓貼用赤外線遮断フイルムを使用し、ＪＩＳ Ｒ ３１０６に準拠して、それぞれ可視光透過率を測定した。結果は表１に示す。
(Measurement of visible light transmittance)
Using the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 and the infrared shielding film for window sticking obtained in Comparative Example 1, each of them was capable of transmitting visible light according to JIS R 3106. The rate was measured. The results are shown in Table 1.
（日射透過率の測定）
実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルム、及び比較例１で得た窓貼用赤外線遮断フイルムを使用し、ＪＩＳ Ｒ ３１０７に準拠して、それぞれ日射透過率を測定した。結果は表１に示す。
(Measurement of solar transmittance)
Using the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 and the infrared shielding film for window sticking obtained in Comparative Example 1, the solar transmittance was respectively determined in accordance with JIS R 3107. Was measured. The results are shown in Table 1.
（水の接触角の測定）
実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルム、及び比較例１で得た窓貼用赤外線遮断フイルムを使用し、ＪＩＳ Ｒ ３２５７に準拠して、実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルムに積層された光学調整層表面、及び比較例１で得た窓貼用赤外線遮断フイルムの赤外線遮断層Ｂ層表面の水の接触角を測定した。
(Measurement of water contact angle)
Using the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 and the infrared shielding film for window sticking obtained in Comparative Example 1, Example 1 according to JIS R 3257, The contact angle of water on the surface of the optical adjustment layer laminated on the infrared shielding film for window sticking of the present invention obtained in Example 2 and the surface of the infrared shielding layer B layer of the infrared shielding film for window sticking obtained in Comparative Example 1 Was measured.
表１の通り、比較例１で得た窓貼用赤外線遮断フイルムは、可視光透過率は８５％と優れた可視光透過性を有するものであったが、日射透過率は７０％であり窓貼用赤外線遮断フイルムのみでは赤外線遮断性は悪いものであった。
それに対して、実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルムは、いずれも可視光透過率が７５％以上（実施例１：８３％、実施例２：７８％）、かつ日射透過率が５０％以下（実施例１：４８％、実施例２：４７％）であり、いずれも本発明の窓貼用赤外線遮断フイルムのみで、優れた可視光透過性、及び優れた赤外線遮断性を有するものであった。
As shown in Table 1, the infrared shielding film for window pasting obtained in Comparative Example 1 had a visible light transmittance of 85% and an excellent visible light transmittance, but had a solar radiation transmittance of 70%. The infrared shielding property was poor only with the infrared shielding film for pasting.
On the other hand, the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 has a visible light transmittance of 75% or more (Example 1: 83%, Example 2: 78%). ), And the solar radiation transmittance is 50% or less (Example 1: 48%, Example 2: 47%), both of which are only the infrared shielding film for window pasting of the present invention, and have excellent visible light transmittance, and It had excellent infrared shielding properties.
また、実施例２で得た本発明の窓貼用赤外線遮断フイルムに積層された光学調整層表面、及び比較例１で得た窓貼用赤外線遮断フイルムの赤外線遮断層Ｂ層表面の水の接触角が１０°以上（実施例２：５０°、比較例１：５０°）であり、実施例２で得た本発明の窓貼用赤外線遮断フイルム、及び比較例１で得た窓貼用赤外線遮断フイルムは、いずれも優れた親水性を有しておらず、該光学調整層、及び該赤外線遮断層Ｂに付着した汚れを除去することができず、防汚効果を発揮するものではなかった。
それに対して、実施例１で得た本発明の窓貼用赤外線遮断フイルムは、該窓貼用赤外線遮断フイルムに積層された光学調整層表面の水の接触角が５°であり、優れた親水性を有するものであり、該光学調整層に付着した汚れを容易に除去することができ、優れた防汚効果を発揮するものであった。
Moreover, the contact of water on the surface of the optical adjustment layer laminated on the infrared shielding film for window sticking of the present invention obtained in Example 2 and the surface of the infrared shielding layer B layer of the infrared shielding film for window sticking obtained in Comparative Example 1 The angle is 10 ° or more (Example 2: 50 °, Comparative Example 1: 50 °), and the infrared shielding film for window sticking of the present invention obtained in Example 2 and the infrared ray for window sticking obtained in Comparative Example 1 are used. None of the shielding films had excellent hydrophilicity and could not remove the dirt adhering to the optical adjustment layer and the infrared shielding layer B, and did not exhibit the antifouling effect. .
On the other hand, the infrared shielding film for window sticking of the present invention obtained in Example 1 has a water contact angle of 5 ° on the surface of the optical adjustment layer laminated on the infrared shielding film for window sticking, and has excellent hydrophilicity. Therefore, it was possible to easily remove the dirt adhering to the optical adjustment layer and to exhibit an excellent antifouling effect.
［比較例２］
厚さ５０μｍのポリエチレンテレフタレートフイルムの片面に、スパッタリング法で、厚さ９５ｎｍのＮｂ２Ｏ５層と、厚さ１３５ｎｍのＳｉＯ２層とを交互に合わせて９層（Ｎｂ２Ｏ５層：５層、ＳｉＯ２層：４層）積層して、比較例２の積層体（プラスチックフイルム上に、特許文献１の実施例１相当の熱線反射層を積層したもの）を得た。
（密着力の測定）
実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルム、及び比較例２で得た積層体を使用し、ＪＩＳ Ｒ ５６００−５−６（クロスカット法）に準拠して、実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルムの光学調整層表面、及び比較例２で得た積層体のＮｂ２Ｏ５層とＳｉＯ２層とが積層されている側の表面の密着力を測定した。
尚、比較例２で得た積層体は、プラスチックフイルム上に、Ｎｂ２Ｏ５層とＳｉＯ２層とを交互に繰り返し何度も積層している為、生産性が極めて悪いものであった。
[Comparative Example 2]
On one side of a polyethylene terephthalate film having a thickness of 50 [mu] m, by sputtering, and Nb 2 O 5 layer having a thickness of 95 nm, 9 layers in accordance with the alternating thick SiO 2 layer 135 nm (Nb 2 O 5 layers: 5 layers , SiO 2 layer: 4 layers) were laminated to obtain a laminate of Comparative Example 2 (on which a heat ray reflective layer corresponding to Example 1 of Patent Document 1 was laminated on a plastic film).
(Measurement of adhesion)
Using the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 and the laminate obtained in Comparative Example 2, and conforming to JIS R 5600-5-6 (cross-cut method). The optical adjustment layer surface of the infrared shielding film for window pasting of the present invention obtained in Example 1 and Example 2, and the Nb 2 O 5 layer and the SiO 2 layer of the laminate obtained in Comparative Example 2 were laminated. The adhesion strength of the surface on the side of the wire was measured.
The laminate obtained in Comparative Example 2 had extremely poor productivity because the Nb 2 O 5 layer and the SiO 2 layer were alternately and repeatedly laminated on the plastic film many times.
（試験結果）
比較例２で得た積層体は、ポリエチレンテレフタレートフィルム上に積層したＮｂ２Ｏ５層、またはＳｉＯ２層が、ポリエチレンテレフタレートフィルム上から剥がれていたのに対して、実施例１、及び実施例２で得た窓貼用赤外線遮断フイルムは、赤外線遮断層Ｂ、及び光学調整層が、ポリエチレンテレフタレートフィルム上から剥がれることがなかった。
(Test results)
In the laminate obtained in Comparative Example 2, the Nb 2 O 5 layer or the SiO 2 layer laminated on the polyethylene terephthalate film was peeled off from the polyethylene terephthalate film, whereas Example 1 and Example 2 In the infrared shielding film for window sticking obtained in the above, the infrared shielding layer B and the optical adjustment layer were not peeled off from the polyethylene terephthalate film.
また、前記通り、実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルムは、優れた熱線遮断性を有するものであり、優れた熱線遮断性を有するものとする為に赤外線遮断層Ａ、赤外線遮断層Ｂをそれぞれ１層積層したのみであった。その為、実施例１、及び実施例２で得た本発明の窓貼用赤外線遮断フイルムを、効率よく、低い製造コストで製造することができた。 In addition, as described above, the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 has excellent heat ray blocking properties and has excellent heat ray blocking properties. Only one infrared blocking layer A and one infrared blocking layer B were laminated. Therefore, the infrared shielding film for window sticking of the present invention obtained in Example 1 and Example 2 could be efficiently manufactured at a low manufacturing cost.
Claims (8)
The infrared shielding film for window sticking according to any one of claims 1 to 7, wherein the metal oxide fine particles are indium oxide fine particles (ITO fine particles) doped with tin.
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Cited By (4)
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| JP2017153377A (en) * | 2016-02-29 | 2017-09-07 | 帝人フィルムソリューション株式会社 | Heat ray reflection film structure used in agricultural house utilizing sunlight |
| WO2017150165A1 (en) * | 2016-02-29 | 2017-09-08 | 帝人フィルムソリューション株式会社 | Greenhouse, plant cultivation method using said greenhouse, and heat-ray reflecting film structure |
| WO2019069250A1 (en) * | 2017-10-06 | 2019-04-11 | 3M Innovative Properties Company | Window film |
| KR102424722B1 (en) * | 2021-09-01 | 2022-07-25 | 이정표 | Retro Reflective Sheet |
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| CN109632260A (en) * | 2018-12-13 | 2019-04-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of infrared spectral coverage is optically isolated window and its installation method |
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