JP6537320B2 - Laminates for infrared transmission and visible hiding - Google Patents

Laminates for infrared transmission and visible hiding Download PDF

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JP6537320B2
JP6537320B2 JP2015070046A JP2015070046A JP6537320B2 JP 6537320 B2 JP6537320 B2 JP 6537320B2 JP 2015070046 A JP2015070046 A JP 2015070046A JP 2015070046 A JP2015070046 A JP 2015070046A JP 6537320 B2 JP6537320 B2 JP 6537320B2
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JP2016191729A (en
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鈴木 康之
康之 鈴木
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Toppan Infomedia, Co Ltd
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本発明は、自動車のフロントガラスに設置される衝突被害低減ブレーキの検知方式の一つである赤外線検知装置に関し、赤外線受光部の検知感度の向上を目的とした機能膜を付加するための転写フィルムなどの積層体に関する。   The present invention relates to an infrared detection device which is one of the detection methods of a collision damage reduction brake installed on a windshield of an automobile, and a transfer film for adding a functional film for the purpose of improving detection sensitivity of an infrared light receiving unit. Etc. on a laminate.

近年、自動車が障害物を感知して衝突に備える機能として衝突被害低減ブレーキが普及しつつある。衝突被害低減ブレーキはアクティブセーフティー(予防安全)とパッシブセーフティー(衝突安全)の間に位置し、車載コンピュータが常時前方への警戒を行っており、前方車両への接近や障害物を感知すると音声などで警告が発せられ、衝突が不可避とシステムが判断した時点で自動的にブレーキをかけて被害の軽減を図る。この他警告の時点でブレーキの効きを強くすることやシートベルトの締め上げなどの衝突に備えた事前動作も行われる。   In recent years, a collision damage reduction brake has been in widespread use as a function of a car detecting an obstacle and preparing for a collision. The collision damage reduction brake is located between active safety (preventive safety) and passive safety (collision safety), and the on-board computer is constantly alerting forward, and voices etc. when it detects approaching or obstacle to the vehicle ahead. A warning is issued, and when the system decides that a collision is inevitable, it will automatically brake to reduce the damage. In addition to this, at the time of the warning, the braking action is strengthened, and the pre-action for collision such as tightening of the seat belt is also performed.

衝突被害低減ブレーキの検知方式はカメラ、ミリ波レーダー、赤外線等のレーザーレーダーに分類され、赤外線等のレーザーレーダー検知装置は自動車のフロントグリルやフロントガラスに設置されている。   Detection methods for collision damage reduction brakes are classified into cameras, millimeter wave radars, and laser radars such as infrared rays, and laser radar detection devices such as infrared rays are installed on the front grille and windshield of a car.

赤外線を用いるレーザーレーダーは他の検知方式に比べ、低価格で検知装置を小さくすることが出来るが、赤外線が太陽の直射光線に弱く、朝や夕方などに検知感度が低下するため、可視光線を遮蔽し、赤外線の検知感度を高くすることが知られている(特許文献1)。   Laser radars that use infrared light can make the detection device smaller at lower cost than other detection methods, but because infrared light is weak to the direct rays of the sun and the detection sensitivity decreases in the morning or evening, etc. It is known to shield and increase the detection sensitivity of infrared light (Patent Document 1).

赤外線の検知感度を高くする方法として、芳香族ポリカーボネート樹脂にクォタリレン色素とリン系安定化剤を添加した赤外線レーザー用フィルター(特許文献1)、ポリカーボネート樹脂にアントラキノン系染料、ペリノン系染料およびキノフタロン系染料を配合した赤外線透過フィルター(特許文献2)、ガラス等の赤外線透過物質からなる基板上に高屈折率物質膜層(Si)と低屈折率物質膜層(SiO2および/またはMgF2)を交互に積層させて形成する赤外線透過・可視光線反射型ミラー(特許文献3)、赤外線透過基材に高屈折率物質層と低屈折率物質層を積層したミラーコート層を形成し、ミラーコート層上にアゾ系染料等の色材層を形成した赤外線センサーカバー(特許文献4)が知られている。 As a method of enhancing the detection sensitivity of infrared light, a filter for infrared laser (wherein the aromatic polyester resin is added with a quartalylene dye and a phosphorus-based stabilizer (Patent Document 1)), a polycarbonate resin with anthraquinone dye, perinone dye and quinophthalone dye And a high refractive index material film layer (Si) and a low refractive index material film layer (SiO 2 and / or MgF 2 ) alternately on a substrate made of an infrared light transmissive material such as glass or the like. An infrared transmitting / visible light reflecting mirror (Patent Document 3), which is formed by laminating on top of one another, and a mirror coat layer in which a high refractive index substance layer and a low refractive index substance layer are laminated on an infrared transmitting base There is known an infrared sensor cover (Patent Document 4) in which a coloring material layer such as an azo dye is formed.

フロントガラスに設置されるタイプの検知装置に関して、フロントガラス周縁部には黒色のセラミックス層(以下、黒セラ)が形成され、受光部分近傍にも黒セラが形成される黒色セラミックペーストを用いた板ガラス製品(特許文献5)が知られている。   With regard to a detection device of the type installed on a windshield, a plate glass using a black ceramic paste in which a black ceramic layer (hereinafter, black sera) is formed on the periphery of the windshield and black sera are formed near the light receiving portion A product (patent document 5) is known.

特開2008−009238号公報JP, 2008-009238, A 特開平9−003311号公報JP-A-9-003311 特開平6−167604号公報Japanese Patent Application Laid-Open No. 6-167604 特開2002−116318号公報JP, 2002-116318, A 特開2010−77197号公報JP, 2010-77197, A

しかしながら、赤外線レーザー用フィルター(特許文献1)と赤外線透過フィルター(特許文献2)はそれぞれ芳香族ポリカーボネート樹脂とポリカーボネート樹脂を用いているが、エステル結合を有するため、高温高湿度の環境下では加水分解される。赤外線透過・可視光線反射型ミラー(特許文献3)は真空蒸着で形成するが、自動車のフロントガラスの様に湾曲したガラスにnmオーダーで高屈折率物質膜層および低屈折率物質膜層の膜厚制御は困難である。赤外線センサーカバー(特許文献4)は色材層にアゾ系染料を用いているが、光による酸化でアゾ系染料が分解される。黒色セラミックペーストを用いた板ガラス製品(特許文献5)は黒色セラミックにMn、Fe、CuおよびCoの各酸化物を用いているが、赤外線を反射するため、受光部分に加飾することが出来ず、色相は透明となり、黒セラと受光部分の境界でコントラスト差が際立ち、赤外線受光部の意匠性を向上させることができない。   However, although the filter for infrared laser (patent document 1) and the filter for infrared transmission (patent document 2) use an aromatic polycarbonate resin and a polycarbonate resin, respectively, since they have an ester bond, they are hydrolyzed under high temperature and high humidity environment Be done. An infrared transmitting / visible light reflecting mirror (patent document 3) is formed by vacuum deposition, but a film of a high refractive index substance film layer and a low refractive index substance film layer in nm order on a curved glass like a windshield of an automobile Thickness control is difficult. The infrared sensor cover (Patent Document 4) uses an azo-based dye for the coloring material layer, but the azo-based dye is decomposed by oxidation with light. Sheet glass products using black ceramic paste (Patent Document 5) use oxides of Mn, Fe, Cu and Co for black ceramic, but because they reflect infrared rays, they can not be decorated in the light receiving part The hue becomes transparent, and the contrast difference is remarkable at the boundary between the black ceramic and the light receiving portion, and the design of the infrared light receiving portion can not be improved.

本発明は、上記課題に鑑み、自動車のフロントガラス形成に必要な焼成温度(500℃以上)でもフロントガラスに設置される赤外線受光部に赤外線を透過し、且つ可視光線を隠蔽する機能膜を容易に形成できる赤外透過及び可視隠蔽体を提供しようとするものである。   In view of the above problems, the present invention facilitates a functional film that transmits infrared light to an infrared light receiving unit installed on a windshield even at a baking temperature (500 ° C. or higher) required to form a windshield of an automobile and It is an object of the present invention to provide an infrared transmission and visible concealing body that can be formed into

本発明は、支持体上に、少なくとも、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層が設けられ、当該機能層は被着体上に転写され、焼成されることを特徴とする積層体である。
また、前記機能層は、被着体に転写、焼成後において波長830nmにおける透過率が70%以上且つ、波長550nmにおける透過率が30%以下であってもよい。
また、前記機能層は、被着体に転写、焼成後において明度(L*)が8以下の黒色であってもよい。
また、前記機能層が、Au、Ag、Pt、Pd、RhおよびRuからなる群から選択される少なくとも一つの貴金属微粒子か、あるいはSiおよびGeからなる群から選択される少なくとも一つの半金属微粒子、またはこれらの元素を含む化合物を含んでいてもよい。
さらに、前記支持体と機能層との間に、導電性材料を含む導電層をさらに設けてもよい。
The present invention comprises at least a metal fine particle or semimetal fine particle having an average dispersed particle diameter of 1 to 100 nm capable of transmitting at least the infrared region and concealing the visible region on a support, at least And a functional layer is provided, and the functional layer is transferred onto an adherend and fired.
Further, the functional layer may have a transmittance of 70% or more at a wavelength of 830 nm and a transmittance of 30% or less at a wavelength of 550 nm after transfer to an adherend and baking.
The functional layer may be black having a lightness (L *) of 8 or less after transfer to an adherend and baking.
In addition, the functional layer is at least one noble metal particle selected from the group consisting of Au, Ag, Pt, Pd, Rh and Ru, or at least one semimetal particle selected from the group consisting of Si and Ge. Or you may contain the compound containing these elements.
Furthermore, a conductive layer containing a conductive material may be further provided between the support and the functional layer.

本発明は、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物と熱融着可能なガラス粉体とを少なくとも含む赤外透過及び可視隠蔽用組成物である。
また、前記金属微粒子または半金属微粒子が、Au、Ag、Pt、Pd、RhおよびRuからなる群から選択される貴金属の少なくとも一つの微粒子か、あるいはSiおよびGeからなる群から選択される半金属の少なくとも一つの微粒子、またはこれらの元素を含む化合物であってもよい。
The present invention is a red particle comprising at least metal particles or semimetal particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting in the infrared region and concealing the visible region, an organic material capable of being sintered and removed, and a thermally fusible glass powder It is a composition for extravasation and visibility hiding.
Further, the metal fine particles or the metalloid fine particles are at least one fine particle of a noble metal selected from the group consisting of Au, Ag, Pt, Pd, Rh and Ru, or a metalloid selected from the group consisting of Si and Ge Or at least one particle of the above, or a compound containing these elements.

本発明は、表面に、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層を設けて焼成した赤外透過及び可視隠蔽体付き基板である。
また、前記機能層は、焼成後において波長830nmにおける透過率が70%以上且つ、波長550nmにおける透過率が30%以下であってもよい。
また、前記機能層は、焼成後において明度(L*)が8以下の黒色であってもよい。
また、前記機能層が、Au、Ag、Pt、Pd、RhおよびRuから選択される少なくとも一種の貴金属微粒子、あるいはSiおよびGeから選択される少なくとも一種の半金属微粒子、またはこれら元素を含む化合物を含んでいてもよい。
さらに、前記機能層の表面に、導電性材料を含む導電層をさらに設けてもよい。
The present invention has on the surface a functional layer comprising at least metal fine particles or semimetal fine particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting an infrared region and concealing a visible region, and an organic material capable of firing and removing and glass powder. It is a substrate with an infrared transmitting and visible shielding member provided and fired.
In the functional layer, the transmittance at a wavelength of 830 nm may be 70% or more and the transmittance at a wavelength of 550 nm may be 30% or less after firing.
The functional layer may be black having a lightness (L *) of 8 or less after firing.
In addition, the functional layer contains at least one kind of noble metal fine particles selected from Au, Ag, Pt, Pd, Rh and Ru, or at least one kind of metalloid fine particles selected from Si and Ge, or a compound containing these elements. May be included.
Furthermore, a conductive layer containing a conductive material may be further provided on the surface of the functional layer.

本発明によれば、自動車が障害物を感知して衝突に備えるため、自動車のフロントガラスに設置される衝突被害低減ブレーキの検知方法の一つである赤外線検知装置における赤外透過及び可視隠蔽用組成物が提供され、具体的には赤外線受光部の検知感度および意匠性向上を目的とした機能層を付加するための材料である。
さらに、この組成物を上記の赤外線検知装置に形成する際の機能層の転写に好適に用いることができる積層体(例えば、転写フィルム)が提供される。
また、本発明によれば、この組成物により、またはこの積層体を用いて機能層が形成された基板が提供される。さらに、この基板の機能層上に導電層を更に積層することで赤外線検知装置近傍にある電子機器(AMアンテナ等)への電磁波漏洩防止も付加することも可能となる。
According to the present invention, since an automobile senses an obstacle and prepares for a collision, it is for infrared transmission and visible concealment in an infrared detection device which is one of the detection methods of a collision damage reduction brake installed on a windshield of the automobile The composition is provided, and specifically, it is a material for adding a functional layer for the purpose of improving detection sensitivity and design of the infrared light receiving unit.
Furthermore, a laminate (for example, a transfer film) is provided that can be suitably used for transfer of the functional layer when forming the composition in the above infrared detection device.
Further, according to the present invention, there is provided a substrate on which a functional layer is formed by this composition or by using this laminate. Furthermore, by further laminating a conductive layer on the functional layer of this substrate, it is also possible to add electromagnetic wave leakage prevention to an electronic device (such as an AM antenna) in the vicinity of the infrared detection device.

本発明の一実施例である赤外透過及び可視隠蔽用転写フィルムを示す断面拡大図である。It is a cross-sectional enlarged view which shows the transfer film for infrared permeation | transmission and visible concealment which is one Example of this invention. 当該一実施形態の転写フィルムからの転写物8を被着体1に形成した状態を示す断面拡大図である。It is a cross-sectional enlarged view which shows the state which formed the to-be-adhered body 1 in the transferred material 8 from the transfer film of the said one Embodiment. 図2に示した被着体に形成した転写物を焼成して得られる本発明の基板の一実施形態を示す断面拡大図である。It is a cross-sectional enlarged view which shows one Embodiment of the board | substrate of this invention obtained by baking the transfer material formed in the to-be-adhered body shown in FIG. 本発明の一実施形態の赤外透過及び可視隠蔽用転写フィルムを上部から見たときの転写物を示す平面図模型図である。It is a top view model figure showing the transcription thing when the transfer film for infrared penetration and visible concealment of one embodiment of the present invention is seen from the upper part. 本発明の一実施形態のフロントガラス表面(車内側)の赤外線受光部に赤外透過及び可視隠蔽体を形成したときの車外側から見た平面模型図である。It is the plane model figure seen from the vehicle outer side when infrared permeation | transmission and a visible shielding body are formed in the infrared rays light-receiving part of the windshield surface (vehicle inner side) of one Embodiment of this invention.

以下に本発明について詳細を説明する。
本発明は、一つの側面から、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む赤外透過及び可視隠蔽用組成物を提供する。
The present invention will be described in detail below.
According to one aspect of the present invention, there is provided a red or at least metal particles or semimetal particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting an infrared region and concealing a visible region, and at least red. Provided are compositions for exo-transmission and visibility hiding.

金属微粒子としては、後述する焼成処理を行っても酸化されにくい貴金属微粒子が好適に用いられ、具体的には、Au、Ag、Pt、Pd、RhおよびRuの微粒子などが挙げられる。なお、後述する所定条件下で明度(L*)を8以下にするという観点からは、Pt、Rh、Ruなどが好適である。なお、Ag、Pdは他の貴金属元素と比較すると酸化されやすい。
また、焼成処理を行っても酸化されにくい半金属微粒子としては、SiおよびGeの粉体が挙げられ、なお、後述する所定条件下で明度(L*)を8以下にするという観点からはSiが好ましく、またはこれらの元素を含む化合物であるSiCを使用することが可能である。
As the metal fine particles, noble metal fine particles which are not easily oxidized even after the baking treatment described later are suitably used. Specifically, fine particles of Au, Ag, Pt, Pd, Rh and Ru, etc. may be mentioned. Note that Pt, Rh, Ru, and the like are preferable from the viewpoint of setting the lightness (L *) to 8 or less under predetermined conditions described later. Ag and Pd are easily oxidized as compared with other noble metal elements.
In addition, examples of metalloid fine particles that are not easily oxidized even after firing treatment include powders of Si and Ge, and from the viewpoint of setting the lightness (L *) to 8 or less under predetermined conditions described later, Si Is preferable, or it is possible to use SiC which is a compound containing these elements.

金属微粒子および半金属微粒子の平均分散粒子径は1〜100nm、より好ましくは5〜50nmの範囲である。ここで、平均分散粒子径は堀場製作所製SZ−100Zを使用し、JIS Z8826に準拠し、D50(体積平均)を平均分散粒子径として算出している。この平均分散粒子径が大きすぎると、赤外領域下で発生するレイミー散乱やミー散乱を抑制することが出来ず、赤外領域における透過率が減少する。一方、平均分散粒子径が小さすぎると、粒子の結晶性が低下するため、可視領域の光吸収が不安定になり、可視光の隠蔽性が低下する。平均分散粒子径を上述の範囲とすることにより、赤外透過と、可視遮蔽とのバランスに優れた機能層を提供することができる。   The average dispersed particle size of the metal fine particles and the semimetal fine particles is in the range of 1 to 100 nm, more preferably 5 to 50 nm. Here, the average dispersed particle size is calculated using Horde SZ-100Z, according to JIS Z8826, and D50 (volume average) as the average dispersed particle size. If the average dispersed particle size is too large, it is not possible to suppress Remye scattering or Mie scattering generated in the infrared region, and the transmittance in the infrared region decreases. On the other hand, if the average dispersed particle size is too small, the crystallinity of the particles is reduced, so that the light absorption in the visible region becomes unstable and the hiding power of visible light is reduced. By setting the average dispersed particle diameter in the above-mentioned range, it is possible to provide a functional layer excellent in the balance between infrared transmission and visible shielding.

有機物としては、後述する焼成処理により分解・除去可能な材料を用いれば種類は限定されないが、このような材料としては、アクリル、メチルセルロース、ニトロセルロース、エチルセルロース、酢酸ビニル、ポリビニルブチラール、ポリビニルアセタール、ポリビニルアルコール、ポリエチレンオキサイド、ポリエステルなどの樹脂が挙げられ、単独、またはこれらを混合して使用することができる。
また後述する積層体に適用した際に、焼成前に可とう性を付与する目的で可塑剤を加えてもよい。可塑剤としては脂肪酸エステル系、リン酸エステル系などが使用可能である。
As the organic substance, the type is not limited as long as it is a material that can be decomposed and removed by a baking treatment described later, but such materials include acrylic, methyl cellulose, nitrocellulose, ethyl cellulose, vinyl acetate, polyvinyl butyral, polyvinyl acetal, polyvinyl Resins, such as alcohol, polyethylene oxide, polyester, etc. are mentioned, It can be used individually or in mixture of these.
When applied to a laminate to be described later, a plasticizer may be added for the purpose of imparting flexibility before firing. As a plasticizer, fatty acid ester type, phosphoric acid ester type etc. can be used.

ガラス粉体は熱融着可能なものであり、具体的にはSiO2、ZrO2、Al23、TiO2、CeO2、B23、Bi23、Na2O、K2O、ZnOなどの酸化物単体またはこれらの酸化物を2種類以上含む複合酸化物が使用可能である。
組成物としては、上述の金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む塗料、ペースト、インクなどの態様として用いられる。
The glass powder is capable of heat fusion, and specifically, SiO 2 , ZrO 2 , Al 2 O 3 , TiO 2 , CeO 2 , B 2 O 3 , Bi 2 O 3 , Na 2 O, K 2 It is possible to use an oxide such as O, ZnO, etc. or a composite oxide containing two or more of these oxides.
The composition is used as an embodiment of a paint, a paste, an ink, etc. containing at least the above-mentioned metal fine particles or metalloid fine particles, an organic matter which can be removed by baking and a glass powder.

また、本発明は、一つの観点から、赤外透過及び可視遮蔽体を被着体上に形成する際に好適に用いることができる積層体を提供する。具体的には、表面に、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層を被着体上に転写し、焼成するための転写フィルムである。   Moreover, this invention provides the laminated body which can be used suitably, when forming infrared transmission and a visible shielding body on a to-be-adhered body from one viewpoint. Specifically, a functional layer containing on the surface at least metal fine particles or semimetal fine particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting an infrared region and concealing a visible region, an organic substance that can be fired and removed, and glass powder. Is transferred onto an adherend and fired.

図1は、本発明の一実施例である赤外透過及び可視隠蔽用転写フィルムを示す断面拡大図であり、図2は、当該転写フィルムからの転写物8を被着体1に形成した状態を示す断面拡大図であり、図3は、図2に示した被着体に形成した転写物を焼成して得られる本発明の赤外透過及び可視隠蔽体付き基板の一実施形態を示す断面拡大図である。   FIG. 1 is an enlarged cross-sectional view showing a transfer film for infrared transmission and visible masking according to an embodiment of the present invention, and FIG. 2 is a state in which a transfer material 8 from the transfer film is formed on an adherend 1 FIG. 3 is a cross-sectional view showing an embodiment of the infrared transmitting and visible shielding member-provided substrate of the present invention obtained by firing the transferred material formed on the adherend shown in FIG. It is an enlarged view.

図1によれば、本実施形態の積層体10は、支持体としての保護フィルム7上に設けられた焼成除去可能な有機物を含む保護層6と、前記保護層6の上に設けられた赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層5と、前記機能層5の上に設けられた焼成除去可能な有機物を含む中間層4と、前記中間層4の上に設けられた常温でタック性を有する焼成除去可能な有機物を含む粘着層3とを少なくとも有し、図1ではさらに粘着層3の上に剥離用フィルム2を積層している。   According to FIG. 1, the laminate 10 of this embodiment includes a protective layer 6 provided on a protective film 7 as a support and containing a bake-removable organic substance, and a red provided on the protective layer 6. The functional layer 5 including at least metal fine particles or metalloid fine particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting the outer region and concealing the visible region, the organic substance capable of being removed by firing and glass powder; At least an intermediate layer 4 including a bake-removable organic material provided on the intermediate layer 4 and an adhesive layer 3 including a bake-removable organic material having tackiness at normal temperature provided on the middle layer 4; Then, the peeling film 2 is further laminated on the adhesive layer 3.

剥離用フィルム2、保護フィルム7は、本発明の積層体の一態様である赤外透過及び可視隠蔽体を形成する際に好適に用いられる転写フィルムを製造するときの支持体、または本発明の赤外透過及び可視隠蔽体を形成する機能層を被着体に貼り合わせるための支持体として用いられる。このため粘着層3、機能層5、保護層6などと剥離が可能であれば特に限定されず、ポリエチレンテレフタレート(PET)やポリイミドなどの樹脂系フィルム、アルミ箔などの金属系シート、及びセラミックシート、紙系などが使用でき、また、シリコーンや再剥離用の微粘着層などの離型層を設けて用いることもできる。   The peeling film 2 and the protective film 7 are used as a support for producing a transfer film suitably used in forming an infrared transmitting and visible shielding member which is one aspect of the laminate of the present invention, or It is used as a support for bonding the functional layer forming the infrared transmission and visible shielding body to the adherend. Therefore, the adhesive layer 3, the functional layer 5, the protective layer 6 and the like are not particularly limited as long as peeling is possible, and resin films such as polyethylene terephthalate (PET) and polyimide, metal sheets such as aluminum foil, and ceramic sheets A paper-based material can be used, and a release layer such as silicone or a slightly releasable adhesion layer can be provided.

粘着層3は、後述する焼成処理により分解・除去可能な有機物であれば特に限定はされないが、常温でタックを有するアクリル系、ゴム系などの粘着剤が使用可能であり、特に熱分解温度が他の樹脂層、例えば中間層4、保護層6の熱分解温度よりも高い材料を用いることが望ましい。粘着層3の膜厚は、図2に示したような被着体1の表面粗さや形状に合わせて転写が容易となる厚みを選択することができ、好ましくは1〜6μmである。この厚みが小さすぎると、粘着力が不足し転写性が低下し、大きすぎると、熱分解ガス量が多くなるため、機能層に欠陥が生じやすく焼成不良となりやすい。粘着層3の膜厚は、被着体1への接着力が発現する範囲で可能な限り薄い方が、粘着層3の熱分解ガス量が少量となり、良好な焼成性が安定して得られやすい。   The pressure-sensitive adhesive layer 3 is not particularly limited as long as it is an organic substance that can be decomposed and removed by a baking process described later, but acrylic and rubber pressure-sensitive adhesives having tack at normal temperature can be used. It is desirable to use a material higher than the thermal decomposition temperature of the other resin layer, for example, the intermediate layer 4 and the protective layer 6. The thickness of the adhesive layer 3 can be selected according to the surface roughness and shape of the adherend 1 as shown in FIG. 2 so as to facilitate transfer, and is preferably 1 to 6 μm. If the thickness is too small, the adhesive strength is insufficient and the transferability is reduced. If the thickness is too large, the amount of thermal decomposition gas increases, so that defects easily occur in the functional layer and the firing tends to be defective. If the film thickness of the adhesive layer 3 is as thin as possible within the range in which the adhesion to the adherend 1 is expressed, the amount of thermal decomposition gas of the adhesive layer 3 becomes small, and good baking can be stably obtained. Cheap.

このような粘着層の形成方法は、スクリーン印刷やオフセット印刷などの印刷方式やグラビアコーティングなどの塗布方式が可能である。粘着層をスクリーン印刷などの印刷方式で形成するときには、粘着剤を適当な溶剤に溶解した塗料を作製し、粘度、チキソ性など印刷適正、固形分を適宜調整して用いる。必要により印刷時の気泡対策や粘度調整のために消泡剤や増粘剤などの添加剤を使用することも可能である。添加剤は焼成によって分解除去できるものを使用する必要がある。溶剤としては、各形成方法に適した沸点や、粘度、チキソ性を調整可能なものを選定すればよく、水系、アルコール系、ケトン系、エステル系、エーテル系、炭化水素系などを使用することが可能である。   Such a pressure-sensitive adhesive layer can be formed by a printing method such as screen printing or offset printing, or a coating method such as gravure coating. When the pressure-sensitive adhesive layer is formed by a printing method such as screen printing, a paint is prepared by dissolving a pressure-sensitive adhesive in a suitable solvent, and the printing suitability such as viscosity and thixotropy and solid content are appropriately adjusted. If necessary, additives such as an antifoaming agent and a thickener can be used to prevent bubbles during printing and to adjust the viscosity. It is necessary to use an additive that can be decomposed and removed by firing. As the solvent, one that can adjust the boiling point, viscosity, and thixotropy suitable for each formation method may be selected, and water-based, alcohol-based, ketone-based, ester-based, ether-based, hydrocarbon-based, etc. should be used. Is possible.

中間層4は、後述する焼成処理により分解・除去可能な有機物であれば特に限定されるものではないが、この上に機能層5、必要に応じて後述する導電層および保護層6を積層形成するため、タック性がなく、Tgが30℃以上、好ましくは40℃以上のものを用いると良い。Tgが低すぎると、タック性(粘着性)が発現することとなり、中間層上に機能層を形成する際に印刷版やコーターヘッド等の形成装置と接触することで機能層の形成不良が生じてしまう。中間層で用いられる有機物としては、例えば、水酸基を有しているポリオールが使用可能で、(メタ)アクリル系、ブチラール系、ポリエステル系、ポリウレタン系、セルロース系、ポリビニル系などから1種もしくは複数種を選択し用いることが可能である。   The intermediate layer 4 is not particularly limited as long as it is an organic substance that can be decomposed and removed by a firing process described later, but the functional layer 5 and a conductive layer and a protective layer 6 described later as needed may be laminated thereon. In order to reduce the tackiness, it is preferable to use one having a Tg of 30.degree. C. or more, preferably 40.degree. C. or more. If the Tg is too low, tackiness (tackiness) will be developed, and when forming the functional layer on the intermediate layer, formation failure of the functional layer will occur due to contact with a forming apparatus such as a printing plate or a coater head. It will As the organic substance used in the intermediate layer, for example, a polyol having a hydroxyl group can be used, and (meth) acrylic, butyral, polyester, polyurethane, cellulose, polyvinyl, etc., one or more kinds It is possible to select and use.

中間層4に硬化剤を使用する場合、熱硬化系が好ましく、エポキシ硬化系、イソシアネート硬化系を使用することができ、特にイソシアネート系が好ましく、イソシアヌレート系、ブロックイソシアネート系などを使用することが可能である。硬化処理により、硬化剤との反応点で100%硬化反応する必要はなく、機能層および必要に応じて後述する導電層のパターン形状の変形(滲み、カスレ、クラックなど)や焼成性の低下を防止できる硬化度であればよい。また、Tgが30℃未満である樹脂であっても硬化剤を添加することによりTgが30℃以上に変化すれば、中間層として使用することは可能である。   When a curing agent is used for the mid layer 4, a thermosetting system is preferable, and an epoxy curing system and an isocyanate curing system can be used, and an isocyanate system is particularly preferable, and an isocyanurate system, a blocked isocyanate system and the like may be used. It is possible. It is not necessary to cure 100% at the reaction point with the curing agent by the curing treatment, and the functional layer and, if necessary, the pattern shape of the conductive layer (described below) may be deformed (bleeding, cracking, cracks, etc.) It is sufficient if the degree of curing can be prevented. Moreover, even if it is resin whose Tg is less than 30 degreeC, if Tg changes to 30 degreeC or more by adding a hardening | curing agent, it is possible to use as an intermediate | middle layer.

中間層の形成方法としては、スクリーン印刷やオフセット印刷などの印刷方式、グラビアコーティングなどの塗布方式を用いることができる。中間層4は機能層5および必要に応じて後述する導電層と同形状のパターンで形成しても良く、機能層5および導電層よりも広いシート形状にしても良い。   As a method of forming the intermediate layer, a printing method such as screen printing or offset printing, or a coating method such as gravure coating can be used. The intermediate layer 4 may be formed in a pattern having the same shape as that of the functional layer 5 and, if necessary, a conductive layer described later, or may be in a sheet shape wider than the functional layer 5 and the conductive layer.

機能層5は、赤外領域を透過且つ可視領域を隠蔽出来る金属微粒子または半金属微粒子、後述する焼成処理により分解・除去可能な有機物、およびガラス粉体を含有し、例えば前述の組成物から形成することができる。   The functional layer 5 contains metal fine particles or metalloid fine particles capable of transmitting an infrared region and concealing a visible region, an organic substance which can be decomposed and removed by a baking treatment described later, and a glass powder, for example, formed from the above-mentioned composition can do.

また、焼成後の機能層5の波長830nmにおける透過率は70%以上、より好ましくは75%以上の範囲である。この波長830nmにおける透過率が低すぎると赤外透過性能が低下し、レーザーレーダー検知装置での誤検知が発生し易くなり、重大な自動車事故を引き起こす可能性が高くなる。また、焼成後の機能層5の波長550nmにおける透過率は30%以下、より好ましくは25%以下の範囲である。この波長550nmにおける透過率が高すぎると、可視領域の透過性能が高くなり、隠蔽性が低下する。   The transmittance of the functional layer 5 at a wavelength of 830 nm after firing is 70% or more, more preferably 75% or more. If the transmittance at this wavelength of 830 nm is too low, the infrared transmission performance is reduced, false detection with the laser radar detection device is likely to occur, and the possibility of causing a serious car accident becomes high. The transmittance of the functional layer 5 at a wavelength of 550 nm after firing is 30% or less, more preferably 25% or less. If the transmittance at a wavelength of 550 nm is too high, the transmission performance in the visible region will be high, and the concealability will be reduced.

また、焼成後の機能層5は、黒色であることが好ましく、具体的には焼成後の明度(L*)は8以下、より好ましくは5以下の範囲である。この明度(L*)が大きすぎると、黒色度が低下し、黒として認識することが困難になる。また、明度がこの範囲であると、フロントガラス周縁部に機能層を焼成して設けたときに、当該フロントガラスの黒セラと同系色となり、意匠性の高い赤外透過及び可視隠蔽体を提供することができる。   The functional layer 5 after firing is preferably black. Specifically, the lightness (L *) after firing is 8 or less, more preferably 5 or less. When the lightness (L *) is too large, the degree of blackness decreases and it becomes difficult to recognize as black. In addition, when the lightness is in this range, when the functional layer is fired and provided on the periphery of the windshield, it becomes the same color as the black sera of the windshield, and the infrared transmission and the visible concealing body with high designability are provided. can do.

機能層5における、金属微粒子または半金属微粒子と、ガラス粉体との重量部比率は10:90から30:70の範囲が好ましい。金属微粒子比率が10よりも低くなると、黒色度も低下することで意匠性を考慮したときに好ましくない。一方、金属微粒子比率が30よりも多くなると、黒色度は向上するが、焼成しても融着しない金属微粒子の割合が増加するため、金属微粒子とガラス粉体の界面の化学的な結合力が弱くなる。また、機能層5の厚さは5〜14μm、より好ましくは7〜12μmであることが、自動車用の窓ガラスに焼成体を形成するのに好適である。層の厚さが薄すぎると、焼成性は向上するが、ガラス粉体の量が少なくなるため、黒色度も低下することで意匠性を考慮したときに好ましくない。層の厚さが厚すぎると、焼成性が低下し、所望の焼成体が得られにくくなる。   The ratio by weight of the metal particles or semimetal particles to the glass powder in the functional layer 5 is preferably in the range of 10:90 to 30:70. When the metal fine particle ratio is lower than 10, the blackness is also reduced, which is not preferable when considering the design. On the other hand, when the metal fine particle ratio is more than 30, the degree of blackness is improved, but the proportion of the metal fine particles that do not fuse even after firing increases, so the chemical bonding force at the interface between the metal fine particles and the glass powder is become weak. The thickness of the functional layer 5 is preferably 5 to 14 μm, more preferably 7 to 12 μm, to form a sintered body on a window glass for automobiles. When the thickness of the layer is too thin, the bakeability is improved, but the amount of the glass powder is reduced, and the blackness is also reduced, which is not preferable when considering the design. When the thickness of the layer is too thick, the sinterability is reduced and it is difficult to obtain a desired fired body.

保護層6は焼成除去可能な有機物からなり、機能層または導電層を設けた場合には導電層の上に形成する。
保護層を設けることで、機能層および必要に応じて後述する導電層を傷などから保護する効果、保護フィルムとの剥離強度を安定化し、転写性を向上する効果がある。
保護層に用いる有機物は特に限定されるものではないが、(メタ)アクリル系、ブチラール系、ポリエステル系、ポリウレタン系、セルロース系、ポリビニル系などを用いることが可能であり、複数種を選択し用いることが可能であり、粘着層、中間層、機能層および導電層に用いている有機物の熱分解温度よりも熱分解温度が低温側であること望ましい。中間層で用いられる有機物には、一定以上のTgが求められるが、保護層に用いる有機物については、さらに積層させる層がないことから、中間層に要求される制限はない。保護層は印刷方式、塗布方式、ラミネート方式などにより形成することが可能であり、機能層および導電層と同じパターン形状で形成してもよく、機能層および導電層よりも広いシート状で形成してもよい。
The protective layer 6 is made of an organic substance which can be removed by firing, and is formed on the conductive layer when the functional layer or the conductive layer is provided.
By providing the protective layer, there are effects of protecting the functional layer and the conductive layer described later as needed from scratches and the like, stabilizing the peel strength with the protective film, and improving the transferability.
The organic substance used for the protective layer is not particularly limited, but (meth) acrylic, butyral, polyester, polyurethane, cellulose, polyvinyl and the like can be used, and plural kinds are selected and used. It is desirable that the thermal decomposition temperature be lower than the thermal decomposition temperature of the organic substance used in the adhesive layer, the intermediate layer, the functional layer and the conductive layer. The organic substance used in the intermediate layer is required to have a predetermined Tg or more, but the organic substance used in the protective layer is not limited to the intermediate layer because there is no further layer to be laminated. The protective layer can be formed by a printing method, an application method, a laminating method, or the like, and may be formed in the same pattern shape as the functional layer and the conductive layer, and is formed in a sheet shape wider than the functional layer and the conductive layer. May be

また、保護層は、保護効果を維持できる範囲でできるだけ薄膜にすることが好ましいが、機能層または導電層を設けた場合には導電層の粗さを平滑化し、保護フィルムとの密着力を安定化し、転写性を向上させ、且つ焼成性に優れていることが求められているため、膜厚は1〜10μmが好ましい。1μm未満の場合、機能層または導電層を設けた場合には導電層の被覆にムラが生じて保護効果が低くなる傾向がある。膜厚が10μmよりも厚くなると、各層からの熱分解ガス量の放出を妨げる影響があるため、焼成後に機能層および導電層に欠陥が生じやすく焼成不良となりやすい。   In addition, it is preferable to make the protective layer as thin as possible within the range in which the protective effect can be maintained, but when a functional layer or a conductive layer is provided, the roughness of the conductive layer is smoothed and the adhesion to the protective film is stable. The film thickness is preferably 1 to 10 μm because it is required to improve the transferability and to be excellent in the bakeability. When the thickness is less than 1 μm, when the functional layer or the conductive layer is provided, the coating of the conductive layer tends to be uneven and the protective effect tends to be low. If the film thickness is larger than 10 μm, there is an influence to prevent the release of the amount of thermal decomposition gas from each layer, so defects tend to occur in the functional layer and the conductive layer after firing, and firing failure tends to occur.

なお、粘着層、中間層、保護層は、本実施形態の転写フィルムとしての機能である転写性を向上させるためのものであり、機能層に支持体としての保護フィルムへの粘着性を付与し、当該支持体から剥離可能であれば、これらの層を設ける必要はなくなる。   In addition, an adhesive layer, an intermediate layer, and a protective layer are for improving the transferability which is a function as a transfer film of this embodiment, and impart adhesiveness to a protective film as a support to a functional layer. It is not necessary to provide these layers if they can be peeled off from the support.

前記機能層に電磁波遮蔽機能を付与するために、焼成したときに機能層の表面に導電層が形成されるようにしてもよい。この導電層は、図1に示したような積層体の機能層のいずれかの表面に設けてもよく、また導電層についても図1に示したよう転写フィルムを作成し、機能層を転写後に、この機能層の表面に導電層を転写し、焼成して形成してもよい。   In order to impart an electromagnetic wave shielding function to the functional layer, a conductive layer may be formed on the surface of the functional layer when fired. This conductive layer may be provided on any surface of the functional layer of the laminate as shown in FIG. 1, and for the conductive layer as shown in FIG. 1, a transfer film is prepared, and after transfer of the functional layer Alternatively, the conductive layer may be transferred to the surface of the functional layer and then fired.

この導電層は導電性材料と焼成除去可能な有機物と熱融着可能なガラス粉体とを含有する。
この導電性材料としては、Au、Ag、Cu、Ni、Co、Sn、Pb、Zn、Bi、Inやこれらを含む合金の粉体を使用することが可能である。
導電層の焼成後の抵抗値は、0.6Ω/cm以下、より好ましくは0.3Ω/cm以下であることが好ましい。
導電性材料とガラス粉体の重量部比率は90:10から50:50、より好ましくは80:20から60:40の範囲である。導電性材料の比率が大きすぎると、焼成後の抵抗値は低くなるが、被着体や機能層と融着するガラス粉体の比率が少なくなり密着性が低下する。一方、導電性材料の比率が小さすぎると、焼成後の抵抗値が高くなり、赤外線(電磁波)をアースされ難くなり、周辺機器(AMアンテナ等)に電磁波が漏洩することで、受信感度の低下や受信不良が発生しやすくなる。
また、焼成後の導電層の厚さは4〜10μmが好ましい。この層の厚さが薄すぎると、焼成性は向上するが、焼成後の抵抗値が高くなり、電磁波が漏洩しやすくなる。一方、層の厚さが厚すぎると、焼成後の抵抗値は低くなるが、焼成性が低下し、所望の焼成体が得られなくなる。導電層は、赤外光の透過率に影響しないような透明性を有するか、格子状もしくは機能層の縁部に枠状に形成することが出来る。
The conductive layer contains a conductive material, a baking removable organic substance, and a thermally fusible glass powder.
As the conductive material, it is possible to use powder of Au, Ag, Cu, Ni, Co, Sn, Pb, Zn, Bi, In or an alloy containing these.
The resistance value after firing of the conductive layer is preferably 0.6 Ω / cm or less, more preferably 0.3 Ω / cm or less.
The ratio by weight of the conductive material to the glass powder is in the range of 90:10 to 50:50, more preferably 80:20 to 60:40. When the ratio of the conductive material is too large, the resistance value after firing decreases, but the ratio of the glass powder fused to the adherend or the functional layer decreases, and the adhesion is lowered. On the other hand, if the ratio of the conductive material is too small, the resistance value after firing becomes high, and it becomes difficult to ground infrared rays (electromagnetic waves), and the electromagnetic waves leak to peripheral devices (AM antenna etc.), thereby lowering the receiving sensitivity. And reception defects tend to occur.
Moreover, as for the thickness of the conductive layer after baking, 4-10 micrometers is preferable. When the thickness of this layer is too thin, although the bakeability is improved, the resistance value after firing becomes high, and the electromagnetic wave tends to leak. On the other hand, when the thickness of the layer is too thick, although the resistance value after firing is lowered, the firing property is lowered and a desired fired body can not be obtained. The conductive layer can be transparent so as not to affect the transmittance of infrared light, or can be formed like a frame at the edge of the lattice or the functional layer.

本実施形態の赤外透過及び可視隠蔽用転写フィルムの製造方法としては、図1を参照すれば、キャリアフィルム上に粘着層3を形成し、その上に中間層4を積層して硬化した後、機能層5および保護層6を積層形成し、転写フィルム10の支持体となる保護フィルム7を保護層6の上にラミネートして作製することができる。なお、このキャリアフィルムは剥離用フィルム2となる。別の方法としては、キャリアフィルムに中間層4を形成し、機能層5および保護層6を積層形成した後、保護フィルム7を保護層6の上にラミネートして積層物A(不図示)を作製し、積層物Aのキャリアフィルムを剥離して中間層4の上に粘着層3を塗布形成する、または剥離用フィルム2に粘着層3を形成した積層物B(不図示)を別に準備し、積層物Aのキャリアフィルムを剥離した中間層4の上にラミネートして作製することができる。   As a manufacturing method of the transfer film for infrared transmission and visible concealment of the present embodiment, referring to FIG. 1, after the adhesive layer 3 is formed on the carrier film and the intermediate layer 4 is laminated thereon and cured, The functional layer 5 and the protective layer 6 can be laminated, and the protective film 7 as a support of the transfer film 10 can be laminated on the protective layer 6. In addition, this carrier film becomes the film 2 for peeling. As another method, after the intermediate layer 4 is formed on the carrier film, the functional layer 5 and the protective layer 6 are laminated, the protective film 7 is laminated on the protective layer 6 to form a laminate A (not shown). Produce and peel off the carrier film of the laminate A to apply and form the adhesive layer 3 on the intermediate layer 4 or separately prepare a laminate B (not shown) in which the adhesive layer 3 is formed on the film for peeling 2 The carrier film of the laminate A can be laminated on the peeled intermediate layer 4.

本発明の積層体の一実施形態によると、被着体1に転写する前に剥離用フィルム2を剥離し、粘着層3を被着体1に貼り合わせた後、保護フィルム7を剥離して、被着体1上に転写した粘着層3、中間層4、機能層5および保護層6からなる転写物8を同時に焼成することにより、図3に示したように、被着体1に機能層5aを焼成体として付加することができ、この被着体1と機能層5aとから赤外透過及び可視遮蔽体付き基板12が提供される。   According to one embodiment of the laminate of the present invention, the peeling film 2 is peeled before being transferred to the adherend 1, and the adhesive layer 3 is bonded to the adherend 1, and then the protective film 7 is peeled off. By simultaneously baking the transferred material 8 consisting of the adhesive layer 3, the intermediate layer 4, the functional layer 5 and the protective layer 6 transferred onto the adherend 1, as shown in FIG. The layer 5a can be added as a fired body, and the adherend 1 and the functional layer 5a provide a substrate 12 with infrared transmission and a visible shield.

すなわち、本発明は、もう一つの観点から、表面に、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層を設けて焼成した赤外透過及び可視隠蔽体付き基板を提供する。   That is, according to another aspect of the present invention, metal fine particles or metalloid fine particles having an average dispersed particle diameter of 1 to 100 nm capable of transmitting an infrared region and concealing a visible region on the surface, an organic matter that can be removed by firing and glass powder A functional layer including at least a body is provided to provide a fired infrared-transparent and visible-masked substrate.

本実施形態の赤外透過及び可視隠蔽体付き基板は、前述の赤外透過及び可視隠蔽用転写フィルムを用いて、フロントガラスなどの被着体に転写することにより形成することができる。
すなわち、粘着層を被着体に貼り合わせた後、保護フィルムを剥離し、被着体上に機能層を含む積層体を転写形成し、これを焼成して、機能層の焼成体を被着体上に形成する。また、前述したように、機能層を含む積層物Aとは別に、剥離用フィルム2に粘着層3を形成した積層物Bを準備した場合には、積層物Bの粘着層を被着体に貼り合わせ、剥離用フィルムを剥離して粘着層単層を被着体上に転写した後、積層物Aのキャリアフィルムを剥離し、粘着層上に貼り合わせ、転写する方法も可能である。
The infrared transmitting and visible shielding body-attached substrate of the present embodiment can be formed by transferring the substrate to an adherend such as a windshield using the above-described transfer film for infrared transmitting and visible shielding.
That is, after bonding the adhesive layer to the adherend, the protective film is peeled off, the laminate including the functional layer is transferred and formed on the adherend, and the laminate is fired to adhere the fired body of the functional layer. Form on the body. Further, as described above, when the laminate B in which the adhesive layer 3 is formed on the peeling film 2 is prepared separately from the laminate A including the functional layer, the adhesive layer of the laminate B is used as the adherend. A method is also possible in which the carrier film of the laminate A is peeled off after laminating, peeling off the peeling film and transferring the adhesive layer monolayer onto the adherend, and laminating on the adhesive layer and transfer.

このように、本発明の赤外透過及び可視隠蔽用転写フィルムは、自動車のフロントガラス形成に必要な焼成温度(500℃以上)でもフロントガラスに設置される赤外線受光部に赤外線を透過し、且つ可視光線を隠蔽する機能膜を容易に形成でき、均一性が高く、検知感度のバラツキが少なく、意匠性の高い赤外透過及び可視隠蔽体を提供しようとするものである。   Thus, the transfer film for infrared transmission and visible hiding of the present invention transmits infrared light to the infrared light receiving portion installed on the windshield even at the baking temperature (500.degree. C. or more) required for forming the windshield of an automobile. It is an object of the present invention to provide an infrared transmitting and visible shielding member which can easily form a functional film for shielding visible light, has high uniformity, has small variations in detection sensitivity, and has high designability.

なお、本実施形態の赤外透過及び可視隠蔽体付き基板は、本実施形態の組成物を用いてスクリーン印刷やオフセット印刷などの印刷方式やグラビアコーティングなどの塗布方式、ディスペンサーなどによって機能層及び導電層を形成することもできる。
スクリーン印刷などの印刷方式で機能層および導電層を形成するときは、上述の金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体を溶剤中に分散してなる塗料等を作製し、使用する。溶剤としては、有機物の溶解性や分散性、印刷に適した沸点を考慮し、水系、アルコール系、ケトン系、エステル系、エーテル系、炭化水素系などを使用することが可能である。塗料物性としては、粘度、チキソ性など印刷適正、固形分を適宜調整して用いる。必要により印刷時の気泡対策や粘度調整のために消泡剤や増粘剤などの添加剤を使用することも可能である。添加剤は焼成によって分解除去できるものを使用する。
The infrared-transparent and visible-masking substrate according to the present embodiment is a functional layer and a conductive layer by a printing method such as screen printing or offset printing using the composition of the present embodiment, a coating method such as gravure coating, or a dispenser. Layers can also be formed.
When forming a functional layer and a conductive layer by a printing method such as screen printing, a paint or the like obtained by dispersing the above-mentioned metal fine particles or metalloid fine particles, an organic matter which can be removed by firing and an organic powder and use. As the solvent, water-based, alcohol-based, ketone-based, ester-based, ether-based, hydrocarbon-based, etc. can be used in consideration of the solubility and dispersibility of the organic substance and the boiling point suitable for printing. As the paint properties, the printing suitability such as viscosity and thixotropy, and the solid content are appropriately adjusted. If necessary, additives such as an antifoaming agent and a thickener can be used to prevent bubbles during printing and to adjust the viscosity. The additive is used which can be decomposed and removed by baking.

また、本発明の積層体としての具体例として、図4は、機能層5を含む赤外透過及び可視隠蔽用転写フィルムを上部から見たときの転写物の平面模型図を示す。また、本発明の基板の具体例として、図5はフロントガラス1の表面(車内側)の赤外線受光部に赤外透過及び可視隠蔽の機能層5aを形成した場合の車外側から見た平面模型図である。なお、図5には導電層を表示していないが、機能層5aの上に導電層を設けることで、車体に接続させて赤外線(電磁波)をアースすることが出来る。このため、周辺機器(AMアンテナ等)に電磁波が漏洩せず影響を及ぼさない層構成にもすることが出来る。導電層のパターン形状はアース出来れば特に限定されない。   In addition, as a specific example as a laminate of the present invention, FIG. 4 shows a plan view model of a transferred material when viewed from above the transfer film for infrared transmission and visible light including the functional layer 5. In addition, as a specific example of the substrate of the present invention, FIG. 5 is a plan view seen from the outside of the vehicle when the infrared light receiving portion on the surface of the windshield 1 (vehicle inner side) FIG. Although the conductive layer is not shown in FIG. 5, by providing the conductive layer on the functional layer 5a, the infrared ray (electromagnetic wave) can be grounded by connecting to the vehicle body. For this reason, the layer configuration can be made such that the electromagnetic waves do not leak to peripheral devices (such as an AM antenna) without affecting the electromagnetic waves. The pattern shape of the conductive layer is not particularly limited as long as it can be grounded.

以下に本発明の具体例を説明する。本発明はこれらの実施例により限定されるものではない。
機能層用塗料は白金ペースト(田中貴金属工業製:PtDA;平均分散粒子径D50は20nm)を顔料成分で20重量部に対し、ガラスフリットペースト(奥野製薬工業製:GF3575)を顔料成分で80重量部の比率となる塗料を3本ロールにより混練し、予めアクリル系樹脂ラッカー(DIC製:NCB−166)からアクリル樹脂を抽出し、ジエチレングリコールジブチルエーテル(和光純薬製)で再溶解させたアクリル系樹脂ラッカーを投入し、顔料成分と樹脂成分の重量部比率を94:6になるように作製した。
Hereinafter, specific examples of the present invention will be described. The present invention is not limited by these examples.
The paint for the functional layer is platinum paste (manufactured by Tanaka Kikinzoku Kogyo: PtDA; average dispersed particle diameter D50 is 20 nm) to 20 parts by weight of pigment component, and glass frit paste (manufactured by Okuno Pharmaceutical Industries: GF3575) to pigment component by 80 weight An acrylic resin obtained by kneading the paint having a ratio of 1 part by 3 rolls, extracting the acrylic resin from acrylic resin lacquer (made by DIC: NCB-166) in advance and re-dissolving with diethylene glycol dibutyl ether (made by Wako Pure Chemical Industries, Ltd.) The resin lacquer was charged, and the ratio by weight of the pigment component to the resin component was 94: 6.

導電層用塗料は導電ペースト(昭栄化学工業製:H4170)を顔料成分で70重量部に対し、ガラスフリットペースト(奥野製薬工業製:GF3575)を顔料成分で30重量部の比率となる塗料を3本ロールにより混練し、作製した。   The paint for the conductive layer is a paint having a ratio of 30 parts by weight of a glass frit paste (GF3575, manufactured by Okuno Pharmaceutical Industries, Ltd.) to a pigment component to 70 parts by weight of a conductive paste (manufactured by Shoei Chemical Industry: H4170). It knead | mixed and produced with this roll.

中間層および保護層用塗料としてメチルセルロース系樹脂(松本油脂製薬製:60MP4000)を用い、イソプロピルアルコール(関東化学製)を20重量部に対し、超純水を80重量部の混合溶液中に溶解させた塗料を作製した。
粘着層用塗料として、アクリル系粘着剤(総研化学製:SKダイン1309)を用いた。
A methyl cellulose resin (manufactured by Matsumoto Yushi-Seiyaku Co., Ltd .: 60MP4000) is used as a paint for the intermediate layer and the protective layer, and 80 parts by weight of ultrapure water is dissolved in 20 parts by weight of isopropyl alcohol (manufactured by Kanto Chemical) The paint was made.
An acrylic adhesive (manufactured by Soken Chemical Co., Ltd .: SK dyne 1309) was used as the adhesive layer paint.

(実施例1)
キャリアフィルムとして、シリコーン離型層付きの厚み38μmのPETフィルム(帝人デュポンフィルム製:A54)を使用し、離型層上に中間層用塗料を用いて、メイヤーバーにより乾燥膜厚1.5μmの中間層を形成した。この中間層上に機能層用塗料を用いて、スクリーン印刷により乾燥膜厚9.5μmの機能層を形成した。機能層上に保護層用塗料を用いて、メイヤーバーにより乾燥膜厚5.5μmの保護層を形成した。この保護層上に保護フィルム7(日東電工製:SPV−J−300)をラミネートし、積層物Aを作製した。
Example 1
A 38 μm thick PET film (made by Teijin DuPont Films: A54) with a silicone release layer is used as a carrier film, and a coating for an intermediate layer is used on the release layer, and the dry film thickness is 1.5 μm An intermediate layer was formed. On this intermediate layer, a functional layer paint was used to form a functional layer having a dry film thickness of 9.5 μm by screen printing. A protective layer paint having a dry film thickness of 5.5 μm was formed on the functional layer with a mayer bar using a protective layer paint. A protective film 7 (manufactured by Nitto Denko: SPV-J-300) was laminated on the protective layer to prepare a laminate A.

次に、シリコーン離型層付きの厚み38μmの剥離用フィルム2(帝人デュポンフィルム製:A31)を使用し、離型層上に粘着層用塗料を用いて、メイヤーバーにより乾燥膜厚3.5μmの粘着層を形成し、積層物Bを作製した。
最後に、積層物Aのキャリアフィルムを剥離して露出した中間層と積層物Bの粘着層とを向かい合わせてラミネートし、本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
作製した本発明の赤外透過及び可視隠蔽用転写フィルムの剥離用フィルム2を剥離し、100mm×100mm×厚さ5mmのガラス板の表面に貼り合わせた後、保護フィルム7を剥離し、ガラス板の表面に機能層を含む積層体を転写形成した。最後に、これを焼成し、ガラス板の表面に機能層の焼成体を形成した。
Next, using a 38 μm-thick release film 2 (made by Teijin DuPont Films: A31) with a silicone release layer, using an adhesive layer paint on the release layer, a dry film thickness of 3.5 μm with a meyer bar The pressure-sensitive adhesive layer was formed to prepare a laminate B.
Finally, the carrier film of the laminate A was peeled off, and the exposed intermediate layer and the adhesive layer of the laminate B were laminated to face each other to prepare a transfer film for infrared transmission and visible shielding of the present invention.
The peeling film 2 of the produced transfer film for infrared transmission and visible masking of the present invention is peeled off and bonded to the surface of a 100 mm × 100 mm × 5 mm thick glass plate, and then the protective film 7 is peeled off. The laminate including the functional layer was formed by transfer on the surface of Finally, this was fired to form a fired body of the functional layer on the surface of the glass plate.

焼成は昇温速度50℃/minで680℃まで昇温し、その後2分間維持した後、炉内放冷で100℃まで冷却し、図3に例示した焼成後の形態になったガラス板を炉内から取り出し、赤外透過及び可視隠蔽体付き基板を作製した。   Firing is performed by raising the temperature to 680 ° C. at a heating rate of 50 ° C./min, and then maintained for 2 minutes, followed by cooling in the furnace to 100 ° C., and the glass plate in the form shown in FIG. It took out from the inside of a furnace and produced the board | substrate with an infrared permeation | transmission and a visible shielding body.

赤外透過及び可視隠蔽体付き基板の焼成性として、目視観察により、パターン形状の欠け、ゆがみ、クラック、剥離、色変化などの有無を確認した。光学特性として、波長550nm及び波長830nmにおける透過率を、分光光度計(日立製作所製)を使用し、JIS R3106に準拠して測定した。
明度(L*)として、分光測色計(コニカミノルタ製)を使用し、JIS Z8781−4に準拠して測定した。
As the baking property of the substrate with infrared light transmission and visible light shielding body, the presence or absence of chipping, distortion, cracking, peeling, color change, etc. of the pattern shape was confirmed by visual observation. As an optical characteristic, the transmittance | permeability in wavelength 550nm and wavelength 830nm was measured based on JISR3106 using the spectrophotometer (made by Hitachi, Ltd.).
The lightness (L *) was measured using a spectrophotometer (manufactured by Konica Minolta) in accordance with JIS Z8781-4.

焼成性の評価基準は目視観察でパターン形状の欠け、ゆがみ、クラック、剥離、色変化などが無い状態を○、目視観察でパターン形状の欠け、ゆがみ、クラック、剥離、色変化などがあるが、透過率、明度など他の特性に影響を及ぼさない状態を△、目視観察でパターン形状の欠け、ゆがみ、クラック、剥離、色変化などがあり、他の特性に影響を及ぼす状態を×とした。
結果を表1に示す。
The evaluation criteria for the baking property are visual observation with no chipping of the pattern shape, distortion, cracking, peeling, color change, etc. ○, visual observation with chipping of the pattern shape, distortion, cracking, peeling, color change, etc. A state that does not affect other characteristics such as transmittance and lightness is Δ, and a visual observation indicates that there are chipping of a pattern shape, distortion, cracking, peeling, color change, etc., and a state that affects other characteristics is x.
The results are shown in Table 1.

(実施例2)
実施例1と同様の剥離用フィルム2を使用し、離型層上に粘着層用塗料を用いて、メイヤーバーにより乾燥膜厚3.5μmの粘着層を形成し、粘着層上に中間層用塗料を用いて、メイヤーバーにより乾燥膜厚1.5μmの中間層を形成した、その後、実施例1と同様に中間層上に機能層および保護層を積層形成し、保護層上に保護フィルム7をラミネートして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 2)
Using the same release film 2 as in Example 1 and using the adhesive layer paint on the release layer, an adhesive layer having a dry film thickness of 3.5 μm is formed with a meyer bar, and for the intermediate layer on the adhesive layer A paint was used to form an intermediate layer having a dry film thickness of 1.5 μm with a mayer bar, and thereafter, a functional layer and a protective layer were laminated and formed on the intermediate layer in the same manner as in Example 1 Were laminated to produce a transfer film for infrared transmission and visible shielding of the present invention.
The results are shown in Table 1.

(実施例3)
実施例1と同様に中間層上に機能層を形成した後、機能層上に導電層塗料を用いて、スクリーン印刷により、乾燥膜厚7μmの格子状パターンの導電層を形成した。それ以降は実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 3)
After forming a functional layer on the intermediate layer in the same manner as in Example 1, a conductive layer paint was used on the functional layer, and a conductive layer having a dry pattern thickness of 7 μm was formed by screen printing. Thereafter, in the same manner as in Example 1, a transfer film for infrared transmission and visible shielding of the present invention was produced.
The results are shown in Table 1.

(実施例4)
機能層用塗料として、白金ペーストを顔料成分で90重量部に対し、ガラスフリットペーストを顔料成分で10重量部の比率となる塗料を用いた他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 4)
The red of the present invention was prepared in the same manner as in Example 1 except that a coating was prepared in which the ratio of 10 parts by weight of glass frit paste to 90 parts by weight of platinum paste and 10 parts by weight of glass frit paste was used. A transfer film for exo-transmission and visible hiding was prepared.
The results are shown in Table 1.

(実施例5)
機能層用塗料として、白金ペーストを顔料成分で70重量部に対し、ガラスフリットペーストを顔料成分で30重量部の比率となる塗料を用いた他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 5)
The red of the present invention was prepared in the same manner as in Example 1 except that a paint was used in which the ratio of 30 parts by weight of glass frit paste to 30 parts by weight of platinum paste to 70 parts by weight of pigment was used. A transfer film for exo-transmission and visible hiding was prepared.
The results are shown in Table 1.

(実施例6)
機能層の乾燥膜厚5μmで形成した他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 6)
A transfer film for infrared transmission and visible light shielding of the present invention was produced in the same manner as in Example 1 except that the dry film thickness of the functional layer was formed to be 5 μm.
The results are shown in Table 1.

(実施例7)
機能層の乾燥膜厚14μmで形成した他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 7)
A transfer film for infrared transmission and visible masking of the present invention was produced in the same manner as in Example 1 except that the dry film thickness of the functional layer was 14 μm.
The results are shown in Table 1.

(実施例8)
機能層用塗料において、銀ペースト(大研化学工業製:NAG−10;平均分散粒子径D50は30nm)を顔料成分で20重量部に対し、ガラスフリットペースト(奥野製薬工業製:GF3575)を顔料成分で80重量部の比率となる塗料を3本ロールにより混練し、予めアクリル系樹脂ラッカー(DIC製:NCB−166)からアクリル樹脂を抽出し、ジエチレングリコールジブチルエーテル(和光純薬製)で再溶解させたアクリル系樹脂ラッカーを投入し、顔料成分と樹脂成分の重量部比率を94:6になるように作製した他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Example 8)
In the paint for functional layer, 20 parts by weight of silver paste (Daken Chemical Industry Co., Ltd .: NAG-10; average dispersed particle diameter D50 is 30 nm) as a pigment component, and glass frit paste (Okuno Pharmaceutical Co., Ltd .: GF3575) as a pigment The paint which makes the ratio of 80 weight parts with the component is kneaded with 3 rolls, acrylic resin is extracted beforehand from acrylic resin lacquer (made by DIC: NCB-166), and it dissolves in diethylene glycol dibutyl ether (made by Wako Pure Chemical Industries) In the same manner as in Example 1, except that the weight ratio of the pigment component to the resin component was 94: 6, the transfer of the infrared transmission and the visible transfer of the present invention was carried out. A film was made.
The results are shown in Table 1.

(比較例1)
機能層用塗料として、白金ペーストを顔料成分で100重量部にし、ガラスフリットペーストを添加せずに作製した他は、実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。なお、焼成ができず、微粒子のガラスへの密着ができなかったため、各特性の測定はできなかった。
(Comparative example 1)
As a paint for a functional layer, the transfer film for infrared transmission and visible light of the present invention was prepared in the same manner as in Example 1 except that platinum paste was made into 100 parts by weight with a pigment component and no glass frit paste was added. Made.
The results are shown in Table 1. In addition, since baking was not able to be carried out and close_contact | adherence to microparticles | fine-particles to glass was not completed, the measurement of each characteristic was not able to be performed.

(比較例2)
実施例1と同様に中間層を形成した後、中間層上に機能層を形成せずに、導電層塗料を用いて、スクリーン印刷により、乾燥膜厚7μmの格子状パターンの導電層を形成した。それ以降は実施例1と同様にして本発明の赤外透過及び可視隠蔽用転写フィルムを作製した。
結果を表1に示す。
(Comparative example 2)
An intermediate layer was formed in the same manner as in Example 1, and then a conductive layer paint having a dry film thickness of 7 μm was formed by screen printing using a conductive layer paint without forming a functional layer on the intermediate layer. . Thereafter, in the same manner as in Example 1, a transfer film for infrared transmission and visible shielding of the present invention was produced.
The results are shown in Table 1.

Figure 0006537320
Figure 0006537320

比較例1は、機能層にガラスフリットが添加されていないため、焼成後にガラス板との密着性が無く、明度および透過率(波長550nm、830nm)も所望する結果が得られなかった。
比較例2は、機能層が形成されていないため、明度および透過率(波長550nm、830nm)も所望する結果が得られなかった。
In Comparative Example 1, no glass frit was added to the functional layer, so there was no adhesion to the glass plate after firing, and the desired results for the lightness and transmittance (wavelengths 550 nm and 830 nm) were not obtained.
In Comparative Example 2, the functional layer was not formed, so the lightness and transmittance (wavelengths 550 nm and 830 nm) were not obtained as desired.

本発明の赤外透過及び可視隠蔽用積層体は、自動車のフロントガラスのような被着体に機能層を転写形成することができ、フロントガラスに設置される赤外線受光部に赤外線を透過し、且つ可視光線を隠蔽する機能膜を容易に形成できる。   The laminate for infrared transmission and visible hiding of the present invention can transfer and form the functional layer on an adherend such as a windshield of an automobile, and transmits the infrared light to the infrared light receiving unit installed on the windshield. And the functional film which conceals a visible ray can be formed easily.

1 被着体
2 剥離用フィルム
3 粘着層
4 中間層
5 機能層
5a 機能層(焼成後)
6 保護層
7 保護フィルム
8 転写物
10 積層体
12 赤外透過及び可視遮蔽体付き基板
1 adherend 2 peeling film 3 adhesive layer 4 middle layer 5 functional layer 5 a functional layer (after baking)
6 Protective Layer 7 Protective Film 8 Transferred Article 10 Laminate 12 Substrate with Infrared Transmission and Visible Shield

Claims (4)

支持体上に、少なくとも、赤外領域を透過且つ可視領域を隠蔽出来る平均分散粒子径が1〜100nmの金属微粒子または半金属微粒子と焼成除去可能な有機物とガラス粉体とを少なくとも含む機能層が設けられ、当該機能層は被着体上に転写され、焼成され
前記支持体と機能層との間に、導電性材料を含む導電層が設けられることを特徴とする積層体。
A functional layer comprising at least a metal fine particle or semimetal fine particle having an average dispersed particle diameter of 1 to 100 nm capable of transmitting at least an infrared region and concealing a visible region on a support Provided, the functional layer is transferred onto the adherend and fired ,
Wherein between the support and the functional layer, a conductive layer containing a conductive material is provided laminate according to claim Rukoto.
前記機能層は、被着体に転写、焼成後において波長830nmにおける透過率が70%以上且つ、波長550nmにおける透過率が30%以下であることを特徴とする請求項1に記載の積層体。   The laminate according to claim 1, wherein the functional layer has a transmittance of 70% or more at a wavelength of 830 nm and a transmittance of 30% or less at a wavelength of 550 nm after transfer to an adherend and firing. 前記機能層は、被着体に転写、焼成後において明度(L*)が8以下の黒色であることを特徴とする請求項1または2に記載の積層体。   The laminate according to claim 1 or 2, wherein the functional layer has a lightness (L *) of 8 or less after transfer to an adherend and baking. 前記機能層が、Au、Ag、Pt、Pd、RhおよびRuからなる群から選択される少なくとも一つの貴金属微粒子か、あるいはSiおよびGeからなる群から選択される少なくとも一つの半金属微粒子、またはこれらの元素を含む化合物を含むことを特徴とする請求項1〜3のいずれか一項に記載の積層体。   The functional layer is at least one noble metal particle selected from the group consisting of Au, Ag, Pt, Pd, Rh and Ru, or at least one semimetal particle selected from the group consisting of Si and Ge, or The laminated body as described in any one of the Claims 1-3 characterized by including the compound containing the element of these.
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