JPH11263950A - Transparent adhesive sheet for preventing dew condensation and dew condensation-preventing deflective sign - Google Patents
Transparent adhesive sheet for preventing dew condensation and dew condensation-preventing deflective signInfo
- Publication number
- JPH11263950A JPH11263950A JP10082442A JP8244298A JPH11263950A JP H11263950 A JPH11263950 A JP H11263950A JP 10082442 A JP10082442 A JP 10082442A JP 8244298 A JP8244298 A JP 8244298A JP H11263950 A JPH11263950 A JP H11263950A
- Authority
- JP
- Japan
- Prior art keywords
- transparent adhesive
- retroreflective
- dew condensation
- adhesive sheet
- transparent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009833 condensation Methods 0.000 title claims abstract description 73
- 230000005494 condensation Effects 0.000 title claims abstract description 71
- 239000000853 adhesive Substances 0.000 title claims abstract description 65
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 65
- 230000003405 preventing effect Effects 0.000 title claims abstract description 61
- 239000011347 resin Substances 0.000 claims abstract description 61
- 229920005989 resin Polymers 0.000 claims abstract description 61
- 239000011941 photocatalyst Substances 0.000 claims abstract description 47
- 239000010410 layer Substances 0.000 claims abstract description 42
- 239000012790 adhesive layer Substances 0.000 claims abstract description 24
- 238000002834 transmittance Methods 0.000 claims description 26
- 238000012360 testing method Methods 0.000 claims description 12
- 229920000178 Acrylic resin Polymers 0.000 claims description 9
- 239000004925 Acrylic resin Substances 0.000 claims description 9
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 4
- -1 fluororesin Polymers 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims 2
- 150000004706 metal oxides Chemical class 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 239000012769 display material Substances 0.000 abstract description 41
- 238000000034 method Methods 0.000 abstract description 20
- 239000003550 marker Substances 0.000 description 9
- 239000002775 capsule Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 230000002265 prevention Effects 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000001771 impaired effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、再帰反射交通標識や再
帰反射工事標識等の再帰反射標識類、あるいは、再帰反
射看板や再帰反射銘板等の再帰反射表示材類の表面に貼
り付けて、再帰反射標識類、再帰反射表示材類に結露防
止機能を持たせることを目的とする透明な接着シート及
びそのような透明な接着シートが貼り付けられた再帰反
射標識類、再帰反射表示材類に関する。The present invention relates to a retroreflective sign, such as a retroreflective traffic sign or a retroreflective construction sign, or a retroreflective display material, such as a retroreflective signboard or a retroreflective nameplate. The present invention relates to a retroreflective sign, a transparent adhesive sheet for providing a retroreflective display material with a dew condensation preventing function, and a retroreflective sign and a retroreflective display material to which such a transparent adhesive sheet is attached. .
【０００２】[0002]
【従来の技術】従来より色々な情報を視認者に伝えるこ
とを目的に様々な種類の標識類や表示材類が広く利用さ
れているが、なかでも光を光源方向に向けて反射する再
帰反射機能を有する再帰反射標識や再帰反射表示材は、
その優れた視認性により広く世の中で使用されている。2. Description of the Related Art Conventionally, various types of signs and display materials have been widely used for the purpose of transmitting various information to a viewer. Among them, retroreflection which reflects light toward a light source. Retroreflective signs and retroreflective display materials with functions
Due to its excellent visibility, it is widely used in the world.
【０００３】しかしながら、これら再帰反射標識類にお
いては、その再帰反射機能を光の屈折を用いた特殊な光
学条件により達成しているため、結露により小さなレン
ズ状の水滴が標識表面に付着すると光学条件が変化し再
帰反射機能が損なわれてしまいその優れた視認性が全く
発揮できなくなるという欠点を有している。However, in these retroreflective markers, the retroreflective function is achieved by special optical conditions using refraction of light. And the retroreflection function is impaired, so that excellent visibility cannot be exhibited at all.
【０００４】この欠点を改善することを目的として色々
な提案がなされている。例えば、特開平５−３１０９７
３号公報や特開昭６３−３０７９４８号公報にはシリカ
を含有する樹脂コート層を再帰反射シート表面に設ける
ことによって結露防止を図る方法が開示されている。[0004] Various proposals have been made for the purpose of improving this disadvantage. For example, JP-A-5-31097
No. 3 and JP-A-63-307948 disclose a method for preventing dew condensation by providing a resin coating layer containing silica on the surface of a retroreflective sheet.
【０００５】しかしながら、この方法では表面の親水性
化が十分でなく、また、耐候性も不十分で優れた結露防
止機能を再帰反射シートに付与することができない。However, in this method, the surface is not sufficiently hydrophilic, and the weather resistance is also insufficient, so that an excellent dew condensation preventing function cannot be provided to the retroreflective sheet.
【０００６】また例えば、優れた表面の親水性化を図る
技術として、特開平９−７８５４１号公報や特開平９−
９０８９９号公報には、再帰反射板や再帰反射シートの
表面に直接、光触媒を含有する層を設け再帰反射板や再
帰反射シートの表面を超親水化させて道路標識用反射板
や再帰反射シートの表面汚染を防止する方法が提案され
ている。For example, Japanese Patent Application Laid-Open No. 9-78541 and Japanese Patent Application Laid-Open No.
No. 90899 discloses a retroreflective plate or a retroreflective sheet which is provided with a layer containing a photocatalyst directly on the surface of the retroreflective plate or the retroreflective sheet to make the surface of the retroreflective plate or the retroreflective sheet super-hydrophilic. Methods for preventing surface contamination have been proposed.
【０００７】しかしながら、これらの提案には結露防止
効果については全く触れられてなくどのような効果が得
られるか不明であるが、もし優れた結露防止効果が得ら
れるとしても、これらの方法においては、光触媒を含有
する層を設けた再帰反射板や再帰反射シートの表面に、
色々な表示をすることを目的に他の反射シートや表示材
を貼り付けたり印刷を施したりするとその表面の結露防
止効果が完全に失われてしまうという欠点がある。[0007] However, these proposals do not mention the dew condensation preventing effect at all, and it is not clear what effect can be obtained. , On the surface of a retroreflective plate or a retroreflective sheet provided with a layer containing a photocatalyst,
If another reflective sheet or display material is attached or printed for the purpose of performing various displays, there is a disadvantage that the dew condensation preventing effect on the surface is completely lost.
【０００８】上記欠点を解消する目的で、貼り付ける表
示材の表面にも光触媒を含有する層を設けておくこと、
あるいは、すべての表示を設けた後に標識類、表示材類
の表面に光触媒を含有する層をコーティング等の手段に
よって設けることも考えられるが、前者においては、貼
り付ける表示材の背面と貼り付けられる再帰反射シート
や再帰反射板の表面に設けられた光触媒を含有する層と
の間で、例えば、親水化された光触媒を含有する層への
雨水の進入等の物理的劣化、あるいは光触媒の強い酸化
力に起因する化学的劣化が発生することがあり、ひどい
場合は貼り付けた表示材が剥がれてしまうこともあり好
ましくない。In order to solve the above-mentioned drawbacks, a layer containing a photocatalyst is provided on the surface of the display material to be attached.
Alternatively, it is conceivable to provide a layer containing a photocatalyst on the surface of the sign or display material after providing all the indications by means such as coating, but in the former case, it is attached to the back surface of the display material to be attached. For example, between the retroreflective sheet and the layer containing the photocatalyst provided on the surface of the retroreflective plate, physical degradation such as intrusion of rainwater into the layer containing the photocatalyst hydrophilized, or strong oxidation of the photocatalyst Chemical degradation due to force may occur, and in severe cases, the attached display material may peel off, which is not preferable.
【０００９】後者においては、すべての表示を設けた後
に個々の標識類、表示材類の表面に光触媒を含有する層
を設けることは、著しい作業性の低下を招くという欠点
がある。また、表示にレンズ型再帰反射シートを用いた
場合等においては、再帰反射シートの端面で、再帰反射
シートの光反射膜として用いられているアルミニウム等
の金属膜が強い酸化力を持つ光触媒と直接接触すること
となり、屋外長期使用において金属膜が光触媒により劣
化してしまうという欠点もある。In the latter case, providing a layer containing a photocatalyst on the surface of each sign or display material after all the signs are provided has a disadvantage that the workability is remarkably reduced. In the case where a lens-type retroreflective sheet is used for display or the like, a metal film such as aluminum used as a light reflective film of the retroreflective sheet is directly connected to a photocatalyst having strong oxidizing power on the end face of the retroreflective sheet. As a result, the metal film is deteriorated by the photocatalyst in long-term outdoor use.
【００１０】[0010]
【発明が解決しようとする課題】本発明の目的は、上記
のような欠点を改善し、簡単な方法で標識類、表示材類
に結露防止機能を付与することを可能にし、而して、優
れた結露防止機能を有し、且つ、屋外使用においてもそ
の優れた結露防止機能を長期にわたって維持することの
できる標識類、表示材類を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to improve the above-mentioned drawbacks and to make it possible to impart a dew condensation preventing function to signs and display materials by a simple method. An object of the present invention is to provide a sign and a display material which have an excellent dew condensation preventing function and can maintain the excellent dew condensation preventing function for a long period of time even when used outdoors.
【００１１】[0011]
【課題を解決するための手段】本発明者等は、標識類、
表示材類の結露防止機能とその屋外耐候性について種々
検討を重ねた結果、標識類、表示材類の表面材とは全く
別途に、表面に光触媒を含有する透明光触媒層を設けた
透明接着剤層付きの柔らかい透明な樹脂シートを準備
し、これを標識類、表示材類のうえに透明接着剤層を用
いて貼り合わせることにより、前記従来技術の欠点が全
て解消された標識類、表示材類が得られることを見いだ
し、本発明を完成するに至った。Means for Solving the Problems The present inventors have proposed signs,
As a result of repeated studies on the dew condensation prevention function of display materials and its outdoor weather resistance, a transparent adhesive with a transparent photocatalyst layer containing a photocatalyst on the surface completely separate from the surface materials of signs and display materials By preparing a soft transparent resin sheet with a layer, and attaching this to a sign, a display material using a transparent adhesive layer, a sign and a display material in which all the disadvantages of the prior art are eliminated And found that the present invention was completed.
【００１２】かくして、本発明によれば、伸びが２０％
以上で降伏応力が５０〜５００Kg/cm2の透明な樹脂フイ
ルムと、樹脂フイルムの一方の表面に設けられた光触媒
を含有する透明光触媒層と、樹脂フイルムのもう一方の
表面に設けられた透明接着剤層とからなることを特徴と
する結露防止用透明接着シートが提供される。Thus, according to the present invention, the elongation is 20%
As described above, a transparent resin film having a yield stress of 50 to 500 kg / cm 2 , a transparent photocatalyst layer containing a photocatalyst provided on one surface of the resin film, and a transparent adhesive provided on the other surface of the resin film And a transparent adhesive sheet for preventing dew condensation, comprising:
【００１３】また本発明によれば、表面に再帰反射シー
トからなる再帰反射表示を有する標識と、再帰反射表示
を覆うようにして標識の表面に貼り合わされた透明接着
シートからなる再帰反射標識において、透明接着シート
が伸びが２０％以上で降伏応力が５０〜５００Kg/cm2の
透明な樹脂フイルムと、樹脂フイルムの一方の表面に設
けられた光触媒を含有する透明光触媒層と、樹脂フイル
ムのもう一方の表面に設けられた透明接着剤層とからな
ることを特徴とする結露防止再帰反射標識が提供され
る。According to the present invention, there is provided a sign having a retroreflective display formed of a retroreflective sheet on a surface thereof, and a retroreflective sign formed of a transparent adhesive sheet adhered to the surface of the sign so as to cover the retroreflective display. A transparent resin film having a transparent adhesive sheet having an elongation of 20% or more and a yield stress of 50 to 500 kg / cm 2 , a transparent photocatalyst layer containing a photocatalyst provided on one surface of the resin film, and the other of the resin film And a transparent adhesive layer provided on the surface of the device.
【００１４】以下、本発明の結露防止用透明接着シー
ト、及び、結露防止再帰反射標識について、さらに詳細
に説明する。Hereinafter, the transparent adhesive sheet for preventing dew condensation and the retroreflective sign for preventing dew condensation of the present invention will be described in more detail.
【００１５】本発明の結露防止用透明接着シートは表面
の光触媒を含有する透明光触媒層と、該透明光触媒層を
支持する柔軟で透明な樹脂フイルムと、透明な樹脂フイ
ルムの背面に設けられた透明接着剤層とからなる。The transparent adhesive sheet for preventing dew condensation of the present invention comprises a transparent photocatalyst layer containing a photocatalyst on the surface, a flexible and transparent resin film supporting the transparent photocatalyst layer, and a transparent film provided on the back of the transparent resin film. And an adhesive layer.
【００１６】透明光触媒層は、光によって表面が親水化
されて結露防止機能を発揮する層で、特開平９−７８５
４１号公報や、特開平９−９０８８９号公報等に記載さ
れるような公知の透明光触媒層が用いられる。The transparent photocatalyst layer is a layer whose surface is hydrophilized by light to exhibit a dew condensation preventing function.
A known transparent photocatalyst layer as described in JP-A No. 41, JP-A-9-90889 or the like is used.
【００１７】本発明において、光触媒層は従来技術と異
なり標識類、表示材類の表面に直接設けられるのではな
く、柔軟で透明な樹脂フイルム上に設けられる。In the present invention, unlike the prior art, the photocatalyst layer is not provided directly on the surface of a sign or display material, but is provided on a flexible and transparent resin film.
【００１８】透明な樹脂フイルムは、透明光触媒層を支
持する基材として機能すると同時に、酸化力の強い光触
媒層が直接再帰反射シートに接触しないことを目的とす
るバリヤー層として機能する。The transparent resin film functions not only as a substrate supporting the transparent photocatalyst layer, but also as a barrier layer for preventing the photocatalytic layer having a strong oxidizing power from directly contacting the retroreflective sheet.
【００１９】透明な樹脂フイルムは、標識類、表示材類
の表示の鮮明性や再帰反射性能が損なわれないよう透明
性を有していることが必須で、好ましくは全光線透過率
が７５％以上のものが、さらに好ましくは全光線透過率
が８５％以上のものが、最も好ましくは全光線透過率が
９０％以上のものが用いられる。It is essential that the transparent resin film has transparency so that the clarity of display and the retroreflection performance of signs and display materials are not impaired, and the total light transmittance is preferably 75%. Of these, those having a total light transmittance of 85% or more are more preferable, and those having a total light transmittance of 90% or more are most preferably used.
【００２０】透明な樹脂フイルムは、凹凸や曲面を有し
ていることの多い標識類の表面に追随するよう柔軟であ
ること、また、標識類、表示材類を飛び石や悪戯等の外
的要因から保護するため強度の強いものであることが必
要で、伸び２０％以上で降伏応力が５０〜５００Kg/cm2
の樹脂フイルムが用いられる。The transparent resin film is flexible so that it can follow the surface of a sign which often has irregularities or a curved surface. It is necessary to have a high strength to protect from the elongation, and the yield stress is 50 to 500 kg / cm 2 at elongation of 20% or more.
Is used.
【００２１】透明な樹脂フイルムは、再帰反射シートの
表面に文字、数字等の形状にカットされた再帰反射シー
トを重ね貼りしたような凹凸の大きい標識類にも美麗に
貼り合わせできるよう、好ましくは、伸び３０％以上で
降伏応力が５０〜３００Kg/cm2、より好ましくは、伸び
４０％以上で降伏応力が１００〜２００Kg/cm2のものが
好適に用いられる。The transparent resin film is preferably used so that it can be beautifully bonded to signs having large irregularities such as a retroreflective sheet cut in the shape of letters, numerals, etc., on the surface of the retroreflective sheet. In addition, those having an elongation of 30% or more and a yield stress of 50 to 300 kg / cm 2 , more preferably those of an elongation of 40% or more and a yield stress of 100 to 200 kg / cm 2 are suitably used.
【００２２】透明な樹脂フイルムの厚さは、特に限定さ
れるものではないが、標識類、表示材類に結露防止用透
明接着シートを貼り合わせる時の作業性やシートの強度
等を考慮すれば、一般に、厚さ２０〜１５０μｍ程度、
好ましくは厚さ３０〜１００μｍ程度、さらに好ましく
は厚さ４０〜８０μｍ程度のものが好適に用いられる。The thickness of the transparent resin film is not particularly limited. However, the thickness of the transparent resin film may be determined in consideration of the workability and the strength of the transparent adhesive sheet for preventing dew condensation on signs and display materials. , Generally about 20-150 μm thick,
Preferably, the thickness is about 30 to 100 μm, and more preferably, the thickness is about 40 to 80 μm.
【００２３】透明な樹脂フイルムに用いられる樹脂とし
ては、特に限定されるものではないが、標識類や表示材
類が主に屋外で用いられることを考慮すれば優れた耐候
性を有していることが必要で、アクリル樹脂、塩化ビニ
ル樹脂、フッ素樹脂、ウレタン樹脂、ポリエステル樹
脂、ポリカーボネート樹脂等が単独で、あるいは他の樹
脂と混合して用いられる。なかでも、アクリル樹脂、塩
化ビニル樹脂、フッ素樹脂、ウレタン樹脂が、最も好ま
しくはアクリル樹脂が、その優れた耐候性、透明性、耐
酸性等の特性により好適に用いられる。The resin used for the transparent resin film is not particularly limited, but has excellent weather resistance in view of the fact that signs and display materials are mainly used outdoors. It is necessary to use an acrylic resin, a vinyl chloride resin, a fluororesin, a urethane resin, a polyester resin, a polycarbonate resin, or the like alone or as a mixture with another resin. Among them, acrylic resin, vinyl chloride resin, fluorine resin, and urethane resin are most preferably used because of their excellent properties such as weather resistance, transparency, and acid resistance.
【００２４】透明な樹脂フイルムの耐候性を向上させる
目的で、また、下地となる標識類、表示類の耐候性をよ
り向上させる目的で、樹脂フイル中に紫外線吸収剤や光
安定剤を全光線透過率を著しく損なわない範囲で添加す
ることも好ましい態様である。樹脂フイルム中には、熱
安定剤、抗酸化剤、架橋剤、着色剤等の各種添加剤を、
全光線透過率を著しく損なわない範囲で添加してもよ
い。For the purpose of improving the weather resistance of the transparent resin film, and for the purpose of further improving the weather resistance of the underlying signs and displays, an ultraviolet absorber or a light stabilizer is added to the resin film in accordance with the total light beam. It is also a preferred embodiment to add it in a range that does not significantly impair the transmittance. In the resin film, various additives such as a heat stabilizer, an antioxidant, a crosslinking agent, a coloring agent,
You may add in the range which does not impair the total light transmittance remarkably.
【００２５】本発明の結露防止用透明接着シートにおい
て、透明な樹脂フイルムの背面には、結露防止用透明接
着シートを標識類、表示材類の表面に貼り付けるための
透明接着剤層が設けられる。In the transparent adhesive sheet for preventing dew condensation of the present invention, a transparent adhesive layer for attaching the transparent adhesive sheet for preventing dew condensation to the surface of signs and display materials is provided on the back surface of the transparent resin film. .
【００２６】透明接着剤層は、透明な樹脂フイルムと同
様、標識類、表示材類の表示の鮮明性や再帰反射性能が
損なわれないよう透明性を有していることが必須で、好
ましくは全光線透過率が７５％以上のものが、さらに好
ましくは全光線透過率が８５％以上のものが、最も好ま
しくは全光線透過率が９０％以上のものが用いられる。Like the transparent resin film, the transparent adhesive layer is required to have transparency so that the display clarity and retroreflection performance of markers and display materials are not impaired. Those having a total light transmittance of 75% or more, more preferably those having a total light transmittance of 85% or more, and most preferably those having a total light transmittance of 90% or more are used.
【００２７】透明接着剤層の厚さは、特に限定されるも
のではないが、標識類、表示材類に結露防止用透明接着
シートを貼り合わせる時の作業性、あるいは、貼り合わ
せたときの接着強度等を考慮すれば、一般に、厚さ１０
〜１００μｍ程度、好ましくは厚さ２０〜８０μｍ程
度、さらに好ましくは厚さ３０〜５０μｍ程度の厚さに
設定するのがよい。The thickness of the transparent adhesive layer is not particularly limited, but the workability when bonding a dew-prevention transparent adhesive sheet to a sign or a display material, or the adhesion when bonding. In consideration of strength and the like, generally, a thickness of 10
The thickness is set to about 100 μm, preferably about 20 to 80 μm, and more preferably about 30 to 50 μm.
【００２８】透明接着剤層に用いられる樹脂としては、
特に限定されるものではないが、標識類や表示材類が主
に屋外で用いられることを考慮すれば優れた耐候性を有
していることが必要で、アクリル樹脂、シリコン樹脂、
ゴム系樹脂等が単独で、あるいは他の樹脂と混合されて
用いられる。なかでも、アクリル樹脂、シリコン樹脂
が、その優れた耐候性、透明性、耐熱性等の特性により
好適に用いられる。As the resin used for the transparent adhesive layer,
Although not particularly limited, it is necessary to have excellent weather resistance in consideration of the fact that signs and display materials are mainly used outdoors, acrylic resin, silicone resin,
A rubber-based resin or the like is used alone or as a mixture with another resin. Above all, acrylic resins and silicone resins are preferably used due to their excellent properties such as weather resistance, transparency, and heat resistance.
【００２９】透明接着剤層は、感圧型のものであって
も、感熱型のものであっても、あるいはホットメルト型
のものであってもよいが、標識類、表示材類に結露防止
用透明接着シートを貼り合わせる時の作業性、あるい
は、接着剤層の透明性を考慮すれば、感圧型の粘着剤が
最も好適に用いられる。The transparent adhesive layer may be of a pressure-sensitive type, a heat-sensitive type, or a hot-melt type. In consideration of workability when bonding the transparent adhesive sheet or transparency of the adhesive layer, a pressure-sensitive adhesive is most preferably used.
【００３０】透明接着剤層の中には、紫外線吸収剤、光
安定剤、熱安定剤、抗酸化剤、架橋剤、着色剤、粘着付
与剤等の各種添加剤を、全光線透過率を著しく損なわな
い範囲で添加してもよい。In the transparent adhesive layer, various additives such as an ultraviolet absorber, a light stabilizer, a heat stabilizer, an antioxidant, a cross-linking agent, a coloring agent, and a tackifier are used to significantly reduce the total light transmittance. You may add in the range which does not impair.
【００３１】本発明の結露防止用透明接着シートは、下
地となる標識類、表示材類の表示の鮮明性や再帰反射性
能が損なわれないよう、光触媒層と透明な樹脂フイルム
と透明接着剤層とが積層された一体となった透明接着シ
ートとして透明性を有していることが必要で、好ましく
は全光線透過率が７０％以上、さらに好ましくは全光線
透過率が８０％以上、最も好ましくは全光線透過率が９
０％以上となるように設計される。The transparent adhesive sheet for preventing dew condensation according to the present invention comprises a photocatalyst layer, a transparent resin film and a transparent adhesive layer so as not to impair the clarity of display and retroreflection performance of the underlying signs and display materials. Is necessary to have transparency as an integrated transparent adhesive sheet in which is laminated, and preferably has a total light transmittance of 70% or more, more preferably a total light transmittance of 80% or more, and most preferably. Has a total light transmittance of 9
It is designed to be 0% or more.
【００３２】本発明の結露防止用透明接着シートは、そ
れを貼り合わせた標識類や表示材類が主に屋外で用いら
れることを考慮すればそれ自体で優れた耐候性を有し、
特に、下地となる標識類、表示材類の表示の鮮明性や再
帰反射性能が損なわれないよう長期屋外使用でその透明
性を失わないことが重要である。そのためには、透明接
着シートをＪＩＳ、Ｚ９１１７に記載されるサンシャイ
ンカーボン式促進耐候性試験により２２００時間試験し
た後の透明接着シートの全光線透過率が６０％以上、よ
り好ましくは全光線透過率が７０％以上、最も好ましく
は全光線透過率が８０％以上となるように設計すればよ
い。The dew-prevention transparent adhesive sheet of the present invention has excellent weather resistance by itself in view of the fact that signs and display materials to which it is attached are mainly used outdoors.
In particular, it is important not to lose the transparency in long-term outdoor use so that the clarity of display and the retroreflective performance of the signs and display materials serving as the base are not impaired. For this purpose, the transparent adhesive sheet has a total light transmittance of 60% or more, more preferably a total light transmittance of not less than 60%, after being subjected to a sunshine carbon accelerated weather resistance test described in JIS, Z9117 for 2,200 hours. What is necessary is just to design so that 70% or more, most preferably total light transmittance may be 80% or more.
【００３３】本発明の結露防止用透明接着シートの透明
接着剤層の背面には、通常、透明接着剤層を保護する目
的で剥離紙、あるいは剥離フイルムが積層される。透明
接着剤の厚さの精度を向上させる、また、光触媒層を設
けるときの加工特性等を考慮すれば厚さ精度や耐熱性に
優れたポリエチレンテレフタレートフイルム等を基材と
する剥離フイルムが好適に用いられる。On the back of the transparent adhesive layer of the transparent adhesive sheet for preventing dew condensation of the present invention, a release paper or a release film is usually laminated for the purpose of protecting the transparent adhesive layer. In order to improve the thickness accuracy of the transparent adhesive, and considering the processing characteristics when providing the photocatalyst layer, a release film having a thickness accuracy and a heat-resistant polyethylene terephthalate film as a base material is preferably used. Used.
【００３４】本発明の結露防止用透明接着シートを製造
する方法としては、特に限定されるものではなく、一般
の接着シートの製造方法により簡単に製造することがで
きる。The method for producing the transparent adhesive sheet for preventing dew condensation of the present invention is not particularly limited, and it can be easily produced by a general method for producing an adhesive sheet.
【００３５】例えば、剥離紙、あるいは剥離フイルムの
上に、溶剤を含んだ透明接着剤層となる液状組成物を所
定の厚さで塗布し、大部分の溶剤を乾燥除去した後、透
明な樹脂フイルムを貼り合わせ、その後、さらにその上
に溶剤を含んだ透明光触媒層となる液状組成物を所定の
厚さで塗布し、大部分の溶剤を乾燥除去する方法等によ
り簡単に製造することができる。For example, a liquid composition for forming a transparent adhesive layer containing a solvent is applied to a predetermined thickness on a release paper or a release film, and most of the solvent is dried and removed. The film can be easily manufactured by, for example, a method in which a liquid composition to be a transparent photocatalyst layer containing a solvent is applied thereon in a predetermined thickness, and most of the solvent is removed by drying. .
【００３６】光触媒層と透明な樹脂フイルムの接着性等
を向上させる、あるいは光触媒層の強い酸化力から透明
な樹脂フィルムを保護する等の目的で、両層の間に中間
層を設けることもできる。An intermediate layer may be provided between the photocatalyst layer and the transparent resin film for the purpose of improving the adhesion between the two layers, for example, to improve the adhesion between the two layers, or to protect the transparent resin film from the strong oxidizing power of the photocatalyst layer. .
【００３７】本発明に用いられる透明な樹脂フイルム
は、一般の溶液キャスト法、ゾルキャスト法、カレンダ
ー法、押し出し法、インフレーション法等のフイルム製
造方法で簡単に製造することができる。The transparent resin film used in the present invention can be easily produced by a general film production method such as a solution casting method, a sol casting method, a calendering method, an extrusion method and an inflation method.
【００３８】本発明の結露防止再帰反射標識は、本発明
の結露防止用透明接着シートを、再帰反射シートを用い
た再帰反射表示を有する標識や表示板の表面に貼り合わ
せることによって簡単に造ることができる。The dew condensation preventing retroreflective sign of the present invention can be easily produced by laminating the dew condensation preventing transparent adhesive sheet of the present invention to the surface of a sign or a display plate having a retroreflective display using the retroreflective sheet. Can be.
【００３９】本発明の結露防止再帰反射標識の表示材に
用いられる再帰反射シートの種類としては、特に限定さ
れるものではなく、封入レンズ型再帰反射シートやオー
プンレンズ型再帰反射シート、また、カプセルレンズ型
再帰反射シートやカプセルキューブコーナー型再帰反射
シート等が所望により自由に用いられる。The type of the retroreflective sheet used for the display material of the anti-condensation retroreflective sign of the present invention is not particularly limited, and includes an encapsulated lens type retroreflective sheet, an open lens type retroreflective sheet, and a capsule. A lens type retroreflective sheet, a capsule cube corner type retroreflective sheet or the like can be used freely as desired.
【００４０】なかでも、カプセルレンズ型再帰反射シー
トやカプセルキューブコーナー型再帰反射シート等のカ
プセル型再帰反射シートは高い再帰反射性能を有し好適
に用いられる。Among them, capsule type retroreflective sheets such as a capsule lens type retroreflective sheet and a capsule cube corner type retroreflective sheet have high retroreflective performance and are preferably used.
【００４１】図１は本発明の結露防止用透明接着シー
ト、図２は本発明の結露防止再帰反射標識の代表的な態
様（断面構成）を示すモデル図である。FIG. 1 is a model diagram showing a typical embodiment (cross-sectional configuration) of the transparent adhesive sheet for preventing dew condensation of the present invention, and FIG. 2 is a dew condensation preventing retroreflective sign of the present invention.
【００４２】図１において、本発明の結露防止用透明接
着シート６は、透明な樹脂フイルム３と、透明な樹脂フ
イルムの表面に設けられた光触媒を含有する透明光触媒
層１と、透明な樹脂フイルムの背面に設けられた透明接
着剤層４とからなっている。透明接着剤層の背面には、
所望により剥離紙、剥離フイルム等の保護基材５が、ま
た、透明光触媒層と樹脂フイルムの間には必要に応じて
中間層２が設けられる。In FIG. 1, the transparent adhesive sheet 6 for preventing condensation according to the present invention comprises a transparent resin film 3, a transparent photocatalyst layer 1 containing a photocatalyst provided on the surface of the transparent resin film, and a transparent resin film. And a transparent adhesive layer 4 provided on the back surface of the substrate. On the back of the transparent adhesive layer,
If necessary, a protective substrate 5 such as a release paper or a release film is provided, and an intermediate layer 2 is provided between the transparent photocatalyst layer and the resin film as required.
【００４３】図２において、本発明の結露防止再帰反射
標識９は、アルミ板等からなる標識基板８と、標識基板
の表面に設けられた再帰反射シート等からなる再帰反射
表示７と、再帰反射表示の表面を覆うようにして貼り合
わされた結露防止用透明接着シート６とからなってい
る。In FIG. 2, the dew condensation preventing retroreflective sign 9 of the present invention includes a sign substrate 8 made of an aluminum plate or the like, a retroreflective display 7 made of a retroreflective sheet or the like provided on the surface of the sign substrate, and a retroreflective sign. The transparent adhesive sheet 6 for preventing dew condensation is attached so as to cover the display surface.
【００４４】結露防止用透明接着シートは、図２に示す
ように、再帰反射表示の端部を越えて、標識基板の一部
までを覆うようにして貼り合わせてもよいし、あるい
は、再帰反射表示部のみを覆うようにして貼り合わせて
もよい。As shown in FIG. 2, the transparent adhesive sheet for preventing dew condensation may be attached so as to cover a part of the sign substrate beyond the end of the retroreflective display, or may be retroreflective. The bonding may be performed so as to cover only the display portion.
【００４５】[0045]
【実施例】以下、実施例、比較例を挙げて、本発明をさ
らに具体的に説明する。なお、実施例、比較例、参考例
に用いた各テスト項目の測定法は次のとおりである。The present invention will be described more specifically with reference to examples and comparative examples. In addition, the measuring method of each test item used in the example, the comparative example, and the reference example is as follows.
【００４６】（１）樹脂フイルムの伸び、降伏応力 ２５mm×１５０mmの試料片を各３枚準備し、つかみ間隔
１００mm、引張り速度３００mm/minで引張った時のフィ
ルムの伸びと降伏応力を測定した。測定は温度２３℃、
湿度６５％の雰囲気で行い、平均値で評価した。(1) Elongation and Yield Stress of Resin Film Three specimens each having a size of 25 mm × 150 mm were prepared, and the elongation and yield stress of the film when the film was stretched at a grip interval of 100 mm and a tensile speed of 300 mm / min were measured. The measurement was performed at a temperature of 23 ° C.
The evaluation was performed in an atmosphere with a humidity of 65%, and the average value was evaluated.
【００４７】（２）透明接着シートの全光線透過率 透明接着シートの剥離フィルムを除去し、ＪＩＳ Ｋ ７
１０５に準拠した積分球方式のヘイズメーターにより測
定した。(2) Total light transmittance of the transparent adhesive sheet The release film of the transparent adhesive sheet was removed, and JIS K7
It was measured by a haze meter of an integrating sphere method in accordance with No. 105.
【００４８】（３）透明接着シートの耐候性試験後の全
光線透過率 ＪＩＳ Ｂ ７７５３に準拠したサンシャインカーボンア
ーク式耐候性試験機を用いて２２００時間促進耐候性試
験を実施した後の透明接着シートの全光線透過率を前述
と同様の方法により測定した。(3) Total light transmittance of the transparent adhesive sheet after the weather resistance test The transparent adhesive sheet after the accelerated weather resistance test for 2,200 hours using a sunshine carbon arc type weather resistance tester in accordance with JIS B 7753. Was measured by the same method as described above.
【００４９】（４）透明接着シートの貼り付け作業性 ショア硬度Ａ−８０のゴムローラーを用いて結露防止用
透明接着シートを貼り付けた時の作業性を下記の５段階
にて評価した。(4) Workability of Pasting Transparent Adhesive Sheet The workability when the transparent adhesive sheet for preventing dew condensation was adhered using a rubber roller having a Shore hardness of A-80 was evaluated according to the following five grades.
【００５０】[0050]
【表１】 [Table 1]
【００５１】（５）再帰反射標識の標識外観 再帰反射標識に結露防止用透明接着シートを貼り付けた
時の作業性を下記の４段階にて評価した。(5) Appearance of Retroreflective Marker The workability when a transparent adhesive sheet for preventing dew condensation was adhered to the retroreflective sign was evaluated in the following four grades.
【００５２】（６）再帰反射標識の再帰反射性能 再帰反射標識の再帰反射性能を、ＪＩＳ Ｚ ９１１７に
準拠した方法により入射角５゜、観測角０．２゜で測定
した。(6) Retroreflective Performance of Retroreflective Marker The retroreflective performance of the retroreflective marker was measured by a method based on JIS Z 9117 at an incident angle of 5 ° and an observation angle of 0.2 °.
【００５３】[0053]
【表２】 [Table 2]
【００５４】（７）再帰反射標識の結露後再帰反射性能 予め冷蔵庫で冷却しておいた再帰反射標識を、８０℃の
熱湯上に標識面を下にして対向させ結露させる。結露後
のシートの再帰反射性能を上記と同様の方法で迅速に測
定する。(7) Retroreflection performance of retroreflective signs after dew condensation Retroreflective signs, which have been cooled in a refrigerator in advance, are placed on 80 ° C. hot water with the sign side facing down to cause dew condensation. The retroreflective performance of the sheet after dew condensation is quickly measured by the same method as described above.
【００５５】（８）再帰反射標識の耐候性試験後の標識
外観 ＪＩＳ Ｂ７７５３に準拠したサンシャインカーボンア
ーク耐候性試験機を用いて２２００時間の促進耐候性試
験を実施した後の再帰反射標識の外観を自然光下と再帰
反射条件下で観察し、下記の４段階で評価した。(8) Appearance of the sign of the retroreflective sign after the weather resistance test The appearance of the sign of the retroreflective sign after the accelerated weathering test for 2200 hours was performed using a sunshine carbon arc weather tester in accordance with JIS B7753. Observation was performed under natural light and under retroreflection conditions, and the evaluation was made in the following four stages.
【００５６】[0056]
【表３】 [Table 3]
【００５７】（９）再帰反射標識の耐候性試験後の再帰
反射性能 （８）項と同様にして２２００時間の促進耐候性試験を
実施した後の再帰反射標識について、（６）項と同様の
方法で再帰反射性能を測定した。(9) Retroreflective performance of retroreflective marker after weather resistance test In the same manner as in (8), the retroreflective marker after the accelerated weathering test for 2200 hours was performed in the same manner as in (6). The retroreflective performance was measured by the method.
【００５８】（１０）再帰反射標識の耐候性試験後の結
露後再帰反射性能 （８）項と同様にして２２００時間の促進耐候性試験を
実施した後の再帰反射標識について、（７）項と同様の
方法で結露後の再帰反射性能を測定した。(10) Retroreflective performance after dew condensation after weathering test of retroreflective marker The retroreflective marker after the accelerated weathering test for 2200 hours was carried out in the same manner as (8). The retroreflective performance after dew condensation was measured in the same manner.
【００５９】実施例１ ポリエチレンテレフタレート剥離フイルム、アクリル樹
脂系透明フイルム（全光線透過率９８％）、アクリル樹
脂系感圧型粘着剤層（全光線透過率９３％）を用いた透
明接着シート（ニッカポリマ(株)製、商品名 アクリル
カル１４２）の表面にシリカゾルを混合した二酸化チタ
ン系光触媒分散液を塗布し、その後、乾燥して厚さ約
０.１μｍの透明光触媒層を有する本発明の結露防止用
透明接着シートを作製した。Example 1 A transparent adhesive sheet using a polyethylene terephthalate release film, an acrylic resin-based transparent film (total light transmittance 98%), and an acrylic resin-based pressure-sensitive adhesive layer (total light transmittance 93%) (Nikka Polymer ( Co., Ltd., trade name Acryliccal 142) is coated with a titanium dioxide-based photocatalyst dispersion mixed with silica sol, and then dried to prevent dew condensation of the present invention having a transparent photocatalyst layer having a thickness of about 0.1 μm. A transparent adhesive sheet was produced.
【００６０】次に、縦３０ｃｍ、横３０ｃｍ、厚さ１ｍ
ｍのアルミ板の表面全面に青色カプセルレンズ型再帰反
射シート（ニッカポリマ(株)製、商品名 ニッカライト
ＵＬＳ Ｆ８０６）を貼り付け（背面）、その上のほぼ
中央部に、縦１５ｃｍ、横１５ｃｍにカットした白色カ
プセルレンズ型再帰反射シート（ニッカポリマ(株)製、
商品名 ニッカライト ＵＬＳ Ｆ８１２）を貼り付け
た（表示部）再帰反射表示板を作製した。縦３１ｃｍ、
横３１ｃｍにカットした結露防止用透明接着シートを、
この再帰反射表示板の表面及び端面を覆うようにして貼
り合わせ結露防止再帰反射標識を作製した。Next, 30 cm long, 30 cm wide and 1 m thick
A blue capsule lens type retroreflective sheet (manufactured by Nikka Polymer Co., Ltd., product name: Nikkalite ULS F806) is adhered to the entire surface of the aluminum plate (rear surface). Cut white capsule lens type retroreflective sheet (manufactured by Nikka Polymer Co., Ltd.
A retroreflective display plate to which (trade name: Nikkalite ULS F812) was attached (display unit) was produced. 31cm in height,
A transparent adhesive sheet for preventing dew condensation cut to 31 cm in width,
A retro-reflective sign for preventing dew condensation was produced so as to cover the surface and the end face of the retroreflective display panel.
【００６１】得られた結露防止用透明接着シート及び結
露防止再帰反射標識の特性は表１に示すとおりで、様々
な特性に優れ本発明の目的を満足する接着シート及び再
帰反射標識であった。The properties of the obtained transparent adhesive sheet for preventing dew condensation and the retroreflective sign for preventing dew condensation are shown in Table 1. The adhesive sheet and the retroreflective sign excellent in various properties and satisfy the object of the present invention.
【００６２】比較例１ アクリル樹脂系透明フイルムの代わりに厚さ５０μｍの
ポリエチレンテレフタレート樹脂系フイルム（全光線透
過率９６％）（帝人（株）製、商品名：エンブレットＳ
−５０）を用いた以外は実施例１と同様にして結露防止
用透明接着シート及び結露防止再帰反射標識を作製し
た。Comparative Example 1 Instead of an acrylic resin-based transparent film, a polyethylene terephthalate resin-based film (total light transmittance: 96%) having a thickness of 50 μm (trade name: Embret S, manufactured by Teijin Limited)
A transparent adhesive sheet for preventing dew condensation and a dew condensation preventing retroreflective sign were produced in the same manner as in Example 1 except that -50) was used.
【００６３】得られた結露防止用透明接着シート及び結
露防止再帰反射標識の特性は表１に示すとおりで、貼り
付け作業性、標識外観、耐候性等に劣る本発明の目的を
満足しない接着シート及び再帰反射標識であった。The properties of the obtained transparent adhesive sheet for preventing dew condensation and the retroreflective sign for preventing dew condensation are shown in Table 1, and the adhesive sheet which does not satisfy the object of the present invention is inferior in sticking workability, sign appearance, weather resistance and the like. And retroreflective labels.
【００６４】比較例２ シリカゾルを混合した二酸化チタン系光触媒分散液を直
接再帰反射表示板に塗布し、その後乾燥した以外は実施
例１と同様にして、結露防止再帰反射標識を作製した。Comparative Example 2 A dew condensation preventing retroreflective marker was prepared in the same manner as in Example 1 except that a titanium dioxide-based photocatalyst dispersion mixed with silica sol was directly applied to a retroreflective display panel and then dried.
【００６５】得られた結露防止再帰反射標識の特性は表
１に示すとおりで、標識外観、耐候性等に劣る本発明の
目的を満足しない再帰反射標識であった。The properties of the obtained dew condensation preventing retroreflective sign are shown in Table 1. The retroreflective sign which is inferior in sign appearance and weather resistance and does not satisfy the object of the present invention.
【００６６】参考例 実施例１に用いた再帰反射表示板（結露防止用透明接着
シートを貼り付けないもの）の再帰反射標識としての特
性を表１に示す。結露防止機能を有しない再帰反射標識
は結露後再帰反射性能に著しく劣るものであった。REFERENCE EXAMPLE Table 1 shows the characteristics of the retroreflective display panel (without the transparent adhesive sheet for preventing dew condensation) used in Example 1 as a retroreflective sign. The retroreflective marker having no dew condensation preventing function was remarkably inferior in retroreflective performance after dew condensation.
【００６７】[0067]
【表４】 [Table 4]
【００６８】[0068]
【発明の効果】以上述べたとおり、本発明においては、
結露防止機能を有した透明接着シートを標識類、表示材
類の表面に貼り合わせるという非常に簡単な方法によっ
て、標識類、表示材類の表示部全面に結露防止機能を簡
単に付与することができる。As described above, in the present invention,
By applying a very simple method of attaching a transparent adhesive sheet with dew condensation prevention function to the surface of signs and display materials, the dew condensation prevention function can be easily applied to the entire display portion of the signs and display materials. it can.
【００６９】加えて、本発明の、標識類、表示材類の表
示部表面に結露防止透明接着シートを貼り合わせる方法
は、標識類、表示材類の表示部に直接的に光触媒層を設
ける方法に比べて、透明光触媒層が表示材に用いるイン
クや表面に貼り合わされる再帰反射シートの接着剤層や
金属膜等と直接接触することがないので、インクや再帰
反射シートが剥がれたり劣化したりすることない屋外長
期耐久性に優れる標識類、表示材類を造ることができ
る。In addition, according to the present invention, the method of attaching the dew-prevention transparent adhesive sheet to the surface of the display section of the sign or display material is a method of directly providing a photocatalyst layer on the display section of the sign or display material. In comparison, the transparent photocatalyst layer does not directly contact the ink used for the display material or the adhesive layer or metal film of the retroreflective sheet attached to the surface, so that the ink or the retroreflective sheet may peel or deteriorate. Signs and display materials having excellent outdoor long-term durability can be manufactured without performing.
【００７０】また、本発明の標識類、表示材類の表示部
表面に結露防止用透明接着シートを貼り合わせる方法で
は、新規の標識類、表示材類に結露防止機能を簡単に付
与することができるにとどまらず、既設の標識類、表示
材類の表示部表面に結露防止用透明接着シートを貼り合
わせることによって、既設の標識類、表示材類に、簡単
に結露防止機能を付与することができる。In the method of bonding a transparent adhesive sheet for preventing dew condensation on the surface of a display portion of a sign or display material according to the present invention, a new sign or display material can easily be provided with a dew condensation preventing function. Not only can it be possible, but it is also possible to easily add a dew condensation prevention function to existing signs and display materials by pasting a transparent adhesive sheet for preventing condensation on the display surface of existing signs and display materials. it can.
【００７１】[0071]
【図１】 本発明の結露防止用透明接着シートの断面模
式図の一例である。FIG. 1 is an example of a schematic cross-sectional view of a transparent adhesive sheet for preventing dew condensation of the present invention.
【図２】 本発明の結露防止再帰反射標識の断面模式図
の一例である。FIG. 2 is an example of a schematic cross-sectional view of a dew condensation preventing retroreflective sign of the present invention.
１……透明光触媒層 ２……中間層 ３……透明樹脂フィルム ４……透明接着剤層 ５……保護基材 ６……結露防止用透明接着シート ７……再帰反射表示 ８……標識基板 ９……結露防止再帰反射標識 DESCRIPTION OF SYMBOLS 1 ... Transparent photocatalyst layer 2 ... Intermediate layer 3 ... Transparent resin film 4 ... Transparent adhesive layer 5 ... Protective base material 6 ... Transparent adhesive sheet for preventing dew condensation 7 ... Retroreflective display 8 ... Signature substrate 9 ... dew condensation prevention retroreflective sign
Claims (13)
００Kg/cm2の透明な樹脂フイルムと、樹脂フイルムの一
方の表面に設けられた光触媒を含有する透明光触媒層
と、樹脂フイルムのもう一方の表面に設けられた透明接
着剤層とからなることを特徴とする結露防止用透明接着
シート。An elongation of 20% or more and a yield stress of 50 to 5
A transparent resin film of 00 kg / cm 2 , a transparent photocatalyst layer containing a photocatalyst provided on one surface of the resin film, and a transparent adhesive layer provided on the other surface of the resin film. Characteristic transparent adhesive sheet for preventing condensation.
上、透明接着剤層の全光線透過率が７５％以上である請
求項１に記載の結露防止用透明接着シート。2. The transparent adhesive sheet according to claim 1, wherein the resin film has a total light transmittance of 75% or more, and the transparent adhesive layer has a total light transmittance of 75% or more.
率が７０％以上である請求項２に記載の結露防止用透明
接着シート。3. The transparent adhesive sheet for preventing dew condensation according to claim 2, wherein the total light transmittance of the transparent adhesive sheet for preventing dew condensation is 70% or more.
後の全光線透過率が６０％以上である請求項１〜３のい
ずれかに記載の結露防止用透明接着シート。4. The transparent adhesive sheet for preventing dew condensation according to claim 1, wherein the transparent adhesive sheet for preventing dew condensation has a total light transmittance of 60% or more after a weather resistance test.
ル樹脂、フッ素樹脂、ウレタン樹脂の中から選ばれた１
種もしくは多種の樹脂を主成分とする樹脂フイルムであ
る請求項１〜４のいずれかに記載の結露防止用透明接着
シート。5. A resin film selected from acrylic resin, vinyl chloride resin, fluororesin and urethane resin.
The transparent adhesive sheet for preventing dew condensation according to any one of claims 1 to 4, which is a resin film containing one or more kinds of resins as main components.
請求項１〜４のいずれかに記載の結露防止用透明接着シ
ート。6. The transparent adhesive sheet according to claim 1, wherein the transparent adhesive layer comprises a pressure-sensitive adhesive.
を含有してなる請求項１〜５のいずれかに記載の結露防
止用透明接着シート。7. The transparent adhesive sheet for preventing dew condensation according to claim 1, wherein the transparent photocatalyst layer contains metal oxide-based photocatalyst particles.
表示を有する標識と、再帰反射表示を覆うようにして標
識の表面に貼り合わされた透明接着シートからなる再帰
反射標識において、透明接着シートが伸びが２０％以上
で降伏応力が５０〜５００Kg/cm2の透明な樹脂フイルム
と、樹脂フイルムの一方の表面に設けられた光触媒を含
有する透明光触媒層と、樹脂フイルムのもう一方の表面
に設けられた透明接着剤層とからなることを特徴とする
結露防止再帰反射標識。8. A retroreflective sign comprising a retroreflective display formed of a retroreflective sheet on the surface and a transparent adhesive sheet adhered to the surface of the sign so as to cover the retroreflective display, wherein the transparent adhesive sheet is stretched. A transparent resin film having a yield stress of 50% to 500 kg / cm 2 at 20% or more, a transparent photocatalyst layer containing a photocatalyst provided on one surface of the resin film, and another surface of the resin film. A retroreflective sign for preventing dew condensation, comprising a transparent adhesive layer.
以上である請求項８に記載の結露防止再帰反射標識。9. The transparent adhesive sheet has a total light transmittance of 70%.
The dew condensation preventing retroreflective sign according to claim 8, which is the above.
線透過率が６０％以上である請求項９に記載の結露防止
再帰反射標識。。10. The retroreflective sign according to claim 9, wherein the transparent adhesive sheet has a total light transmittance of 60% or more after a weather resistance test. .
ビニル樹脂、フッ素樹脂、ウレタン樹脂の中から選ばれ
た１種もしくは多種の樹脂を主成分とする樹脂フイルム
である請求項８〜１０のいずれかに記載の結露防止再帰
反射標識。11. The resin film according to claim 8, wherein the resin film is a resin film containing one or more kinds of resins selected from acrylic resin, vinyl chloride resin, fluororesin, and urethane resin as main components. Anti-condensation retroreflective sign as described.
なる請求項８〜１１のいずれかに記載の結露防止再帰反
射標識。12. The retroreflective sign according to claim 8, wherein the transparent adhesive layer is made of a pressure-sensitive adhesive.
粒子を含有してなる請求項８〜１２のいずれかに記載の
結露防止再帰反射標識。13. The retroreflective sign according to claim 8, wherein the transparent photocatalyst layer contains metal oxide-based photocatalyst particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082442A JPH11263950A (en) | 1998-03-16 | 1998-03-16 | Transparent adhesive sheet for preventing dew condensation and dew condensation-preventing deflective sign |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10082442A JPH11263950A (en) | 1998-03-16 | 1998-03-16 | Transparent adhesive sheet for preventing dew condensation and dew condensation-preventing deflective sign |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11263950A true JPH11263950A (en) | 1999-09-28 |
Family
ID=13774659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10082442A Pending JPH11263950A (en) | 1998-03-16 | 1998-03-16 | Transparent adhesive sheet for preventing dew condensation and dew condensation-preventing deflective sign |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11263950A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002134767A (en) * | 2000-10-25 | 2002-05-10 | Lintec Corp | Protective sheet for solar cell module |
| JP2011237820A (en) * | 2005-01-10 | 2011-11-24 | Avery Dennison Corp | Retroreflective film |
| JP2012088361A (en) * | 2010-10-15 | 2012-05-10 | Nok Corp | Sign plate and method for manufacturing the same |
| JP2015525131A (en) * | 2012-06-11 | 2015-09-03 | スリーエム イノベイティブ プロパティズ カンパニー | Nano-silica coating to delay condensation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002134767A (en) * | 2000-10-25 | 2002-05-10 | Lintec Corp | Protective sheet for solar cell module |
| JP2011237820A (en) * | 2005-01-10 | 2011-11-24 | Avery Dennison Corp | Retroreflective film |
| JP2012088361A (en) * | 2010-10-15 | 2012-05-10 | Nok Corp | Sign plate and method for manufacturing the same |
| JP2015525131A (en) * | 2012-06-11 | 2015-09-03 | スリーエム イノベイティブ プロパティズ カンパニー | Nano-silica coating to delay condensation |
| US10508202B2 (en) | 2012-06-11 | 2019-12-17 | 3M Innovative Properties Company | Nanosilica coating for retarding dew formation |
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