JPH02228692A - Sheet material for high-luminance all-weather road surface marker - Google Patents
Sheet material for high-luminance all-weather road surface markerInfo
- Publication number
- JPH02228692A JPH02228692A JP1049363A JP4936389A JPH02228692A JP H02228692 A JPH02228692 A JP H02228692A JP 1049363 A JP1049363 A JP 1049363A JP 4936389 A JP4936389 A JP 4936389A JP H02228692 A JPH02228692 A JP H02228692A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- glass beads
- sheet
- resin
- relatively large
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 46
- 239000003550 marker Substances 0.000 title 1
- 239000011324 bead Substances 0.000 claims abstract description 92
- 239000011521 glass Substances 0.000 claims abstract description 80
- 239000011347 resin Substances 0.000 claims abstract description 60
- 229920005989 resin Polymers 0.000 claims abstract description 60
- 239000002245 particle Substances 0.000 claims abstract description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 9
- 239000005060 rubber Substances 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 113
- 230000007423 decrease Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229920003051 synthetic elastomer Polymers 0.000 description 7
- 239000005061 synthetic rubber Substances 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003431 cross linking reagent Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- -1 aliphatic urethanes Chemical class 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
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229920001084 poly(chloroprene) Polymers 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000004709 Chlorinated polyethylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229920003049 isoprene rubber Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/506—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users characterised by the road surface marking material, e.g. comprising additives for improving friction or reflectivity; Methods of forming, installing or applying markings in, on or to road surfaces
- E01F9/512—Preformed road surface markings, e.g. of sheet material; Methods of applying preformed markings
Landscapes
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Road Signs Or Road Markings (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Dental Preparations (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Glass Compositions (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Helmets And Other Head Coverings (AREA)
- Golf Clubs (AREA)
- Toys (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は路面標示用シート材に関し、特に大きな角度で
入射する光線に対して高い再帰反射輝度を有し、かつ雨
天時夜間にも高い再帰反射輝度を有する全天候型路面標
示用シート材に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sheet material for road markings, which has high retroreflection brightness especially against light rays incident at a large angle, and has high retroreflection brightness even in rainy weather and at night. The present invention relates to an all-weather road marking sheet material that has reflective brightness.
道路の区画線、道路標識等の路面標識として、再帰反射
性を有する路面標示用シート材が使用されている。現在
使用されている各種の路面標示用シート材は、いずれも
再帰反射要素としてガラスビーズを樹脂層に散布または
混入することにより、夜間でも視認することができるよ
うになっている。BACKGROUND ART Retroreflective road marking sheet materials are used as road markings such as road markings and road signs. Various types of road marking sheet materials currently in use are made visible even at night by scattering or mixing glass beads into the resin layer as retroreflective elements.
これらの路面標示用シート材は、雨天時に標示表面が水
膜で覆われると、シート材表面から大気中に露出して反
射機能をうけもっているガラスビーズの上半球部分がほ
とんど水膜中に埋没するため、その反射機能が損われ、
雨天時夜間には視認性が極めて悪くなるという共通の欠
点がある。When the marking surface of these road marking sheet materials is covered with a film of water during rainy weather, most of the upper hemisphere of the glass beads that have a reflective function are exposed to the atmosphere from the sheet material surface and are buried in the water film. As a result, its reflex function is impaired,
A common drawback is that visibility is extremely poor during rainy weather and at night.
そこで、従来このような路面標示用シート材の雨天時夜
間における視認性を改善するため、いくつかの提案がな
されている。たとえば、米国特許第4.388.359
号等においては、ガラスビーズを埋設したシート材の表
面に多数の凹凸を設けることにより雨天時夜間における
視認性の向上を図っている。また特開昭62−2114
03号公報には、雨天時夜間においても再帰反射性を比
較的に失わない屈折率2.0〜2.4のガラスビーズが
ベースシートに埋設されている区域をベースシートの長
手方向に間隔をおいて多数または部分連続的に形成する
ことにより、雨天時夜間における視認性の改良を図って
いる。Therefore, several proposals have been made to improve the visibility of such road marking sheet materials in rainy weather and at night. For example, U.S. Patent No. 4.388.359
No. 1, etc., attempts to improve visibility in rainy weather and at night by providing a large number of irregularities on the surface of a sheet material in which glass beads are embedded. Also, JP-A-62-2114
Publication No. 03 discloses that glass beads with a refractive index of 2.0 to 2.4, which do not relatively lose their retroreflectivity even in rainy weather or at night, are embedded in the base sheet at intervals in the longitudinal direction of the base sheet. By forming a large number or partially continuously, visibility is improved during rainy weather and at night.
これら従来の全天候型路面標示用シート材は、夜間走行
する車輌のヘッドライトからの光が路面標示用シート材
に対し比較的に小さい入射角で照射される時は期待され
た視認性を発揮することができるが、車輌のヘッドライ
トからの光は路面標示用シートに対して通常60°〜8
0”と非常に大きな入射角で照射されるため、このよう
に大きな入射角においては、再帰反射輝度が低下し、そ
の上雨天時には水膜に影響されて再帰反射輝度が一層低
下することを免れない、雨天夜間時における路面標示用
シート材の反射輝度の低下は非常に危険であるので、こ
のように大きな入射角で入射される光線に対する路面標
示用シート材の再帰反射輝度の改善が望まれていた。These conventional all-weather road marking sheet materials exhibit the expected visibility when the light from the headlights of a vehicle driving at night is irradiated onto the road marking sheet material at a relatively small angle of incidence. However, the light from vehicle headlights is normally 60° to 8° relative to the road marking sheet.
Because it is irradiated at a very large incident angle of 0'', the retroreflection brightness decreases at such a large incident angle, and furthermore, in rainy weather, the retroreflection brightness is not affected by the water film and further decreases. However, a decrease in the reflective brightness of road marking sheet materials during rainy weather and nighttime is extremely dangerous, so it is desirable to improve the retroreflective brightness of road marking sheet materials against light rays that enter at such large incident angles. was.
本発明は、上記従来の路面標示用シート材の問題点を解
決するためになされたものであって、路面標示用シート
材が通常の使用時に必要とされる60°以上の大きな角
度で入射する光線に対しても十分な反射輝度を有し、か
つ雨天時夜間にも高い反射輝度を有する全天候型路面標
示用シート材を提供するものである。The present invention has been made in order to solve the above-mentioned problems of conventional road marking sheet materials, and the road marking sheet material is incident at a large angle of 60 degrees or more required during normal use. An object of the present invention is to provide an all-weather road marking sheet material that has sufficient reflective brightness against light rays and has high reflective brightness even in rainy weather and at night.
〔課題を解決するための手段および作用〕上記目的を達
成するため、本発明にかかる高輝度全天候型路面標示用
シート材は、少なくとも一部空気中に露出して透明な樹
脂で結合された比較的大径のガラスビーズ層と該比較的
大径のガラスビーズの背後の透明な樹脂層中に該比較的
大径のガラスビーズから間隔をおいて埋入固定された比
較的小径のガラスビーズ層と該樹脂層の背面に設けられ
た金属蒸着膜等からなる反射層とを有する再帰反射シー
トと、該再帰反射シートの背後に結合されたゴム・合成
樹脂等の材料からなるベースシートとを備えることを特
徴とする。[Means and effects for solving the problem] In order to achieve the above object, the high brightness all-weather type road marking sheet material according to the present invention is provided with a comparative sheet material which is at least partially exposed in the air and bonded with a transparent resin. a relatively large diameter glass bead layer and a relatively small diameter glass bead layer embedded and fixed at a distance from the relatively large diameter glass beads in a transparent resin layer behind the relatively large diameter glass beads; and a reflective layer made of a metal vapor deposited film provided on the back surface of the resin layer, and a base sheet made of a material such as rubber or synthetic resin bonded behind the retroreflective sheet. It is characterized by
上記構成により、本発明によれば、60°以上の大きな
入射角で入射された光線は、比較的大径のガラスビーズ
から透明な樹脂を介して再帰反射シート中の比較的小径
のガラスビーズに入射され反射層において反射された後
比較的小径のガラスビーズ、透明な樹脂および比較的大
径のガラスビーズを通過して再帰反射される。したがっ
て比較的大径のガラスビーズ、比較的小径のガラスビー
ズおよび樹脂の各屈折率および比較的大径のガラスビー
ズおよび比較的小径のガラスビーズの粒径および比較的
大径のガラスビーズと比較的小径のガラスビーズとの間
の樹脂の間隔等を適宜選択し組合せることにより60’
以上の大きな入射角において高い再帰反射効率を得るこ
とができる。With the above configuration, according to the present invention, light rays incident at a large incident angle of 60° or more are transmitted from relatively large diameter glass beads to relatively small diameter glass beads in the retroreflective sheet via the transparent resin. After being incident and reflected on the reflective layer, the light passes through relatively small diameter glass beads, transparent resin, and relatively large diameter glass beads and is retroreflected. Therefore, the refractive index of relatively large-diameter glass beads, relatively small-diameter glass beads, and resin, the particle size of relatively large-diameter glass beads, relatively small-diameter glass beads, and the relatively large-diameter glass beads are relatively large. 60' by appropriately selecting and combining the resin spacing between small diameter glass beads, etc.
High retroreflection efficiency can be obtained at such a large incident angle.
また光学上tT 4H1な機構は不明であるが、上記本
発明の構成を採ることにより、比較的大径のガラスビー
ズの露出部分が水膜に覆われた場合でも、再帰反射輝度
は乾燥状態(晴天時夜間に相当する)と比べて実質的に
低下することがなく、むしろ乾燥状態に比べて再帰反射
輝度が向上する場合らあることが判った。Furthermore, although the optical mechanism of tT 4H1 is unknown, by adopting the configuration of the present invention described above, even when the exposed portion of a relatively large diameter glass bead is covered with a water film, the retroreflection brightness is reduced in a dry state ( It was found that there is no substantial decrease in retroreflection brightness compared to that under clear weather conditions (corresponding to nighttime conditions), and in fact, there are cases in which retroreflection brightness improves compared to dry conditions.
次に本発明にかかる高輝度全天候型路面標示用シート材
の構成について図面を参照して説明する。Next, the structure of the high brightness all-weather type road marking sheet material according to the present invention will be explained with reference to the drawings.
第1図において、本発明の路面標示用シート材Aは再帰
反射シート1およびベースシート2からなるものである
。In FIG. 1, the road marking sheet material A of the present invention consists of a retroreflective sheet 1 and a base sheet 2.
再帰反射シート1の樹脂3は透明性を有し、比較的大径
のガラスビーズ4に対する保持力が良いことが必要であ
り、さらに屋外使用のため、耐摩耗性、耐汚染性、耐変
色性等を考慮して選定する必要がある。これらの条件を
満たず樹脂としてはアクリル系重合体、脂肪族ウレタン
およびポリエステルを架橋したものが好適であり、その
他ビニル重合体、酢酸セルロースブチレート等の熱可塑
性物質ら使用可能である。The resin 3 of the retroreflective sheet 1 needs to be transparent and have good holding power for relatively large diameter glass beads 4, and also has abrasion resistance, stain resistance, and discoloration resistance because it is used outdoors. It is necessary to take these factors into consideration when making a selection. As resins that do not meet these conditions, crosslinked acrylic polymers, aliphatic urethanes, and polyesters are suitable, and other thermoplastic materials such as vinyl polymers and cellulose acetate butyrate can also be used.
本発明においては、比較的大径のガラスビーズ4を少な
くとも一部空気中に露出して設けることにより、照射さ
れる光線が広角度であっても受光量が多く、下層の反射
層まで大きな光量を取り入れるように構成したので、広
角の光を反射するためにはガラスビーズ4の粒径は大き
い程その効果は大きいが、路面での用途を考慮すると2
nunを超えるビーズは脱落し易くその使用には問題が
ある。In the present invention, by providing at least a portion of the relatively large diameter glass beads 4 exposed in the air, a large amount of light is received even if the irradiated light beam is at a wide angle, and a large amount of light reaches the lower reflective layer. Therefore, in order to reflect wide-angle light, the larger the particle size of the glass beads 4, the greater the effect, but considering the use on road surfaces, 2.
Beads larger than nun tend to fall off and are problematic in their use.
また0、2’z+++n未満では輝度が低下し、本発明
の目的を充分に達成し得ない、したがって大径のガラス
ビーズ4の粒径は、0.25〜2+mの範囲内のものを
選ぶ必要があり、特に0.25〜0.5關のものが好ま
しい。Moreover, if it is less than 0.2'z+++n, the brightness will decrease and the object of the present invention cannot be fully achieved.Therefore, the particle size of the large-diameter glass beads 4 needs to be selected within the range of 0.25 to 2+m. In particular, those in the order of 0.25 to 0.5 are preferred.
大径のガラスビーズ4は屈折率1.75〜2゜2の範囲
のものが好ましい。屈折率が1.75末渦では輝度が低
下する一方2.2を超える屈折率のガラスビーズは製造
が難しく高価となる。The large diameter glass beads 4 preferably have a refractive index in the range of 1.75 to 2°2. When the refractive index is 1.75, the brightness decreases, while glass beads having a refractive index of more than 2.2 are difficult and expensive to manufacture.
大径のガラスビーズ4は全表面積の30〜60%となる
ように均一に散布され層となっている。The large-diameter glass beads 4 are uniformly dispersed in a layer covering 30 to 60% of the total surface area.
再帰反射シート1には比較的大径のガラスビーズ4の背
後の透明な樹脂層中にガラスビーズ4から間隔をおいて
比較的小径のガラスビーズ5が埋入固定され層を形成し
ている。小径のガラスビーズ5の背後の透明な樹脂層の
背面には金属蒸着膜等からなる反射層8が設けである。In the retroreflective sheet 1, relatively small diameter glass beads 5 are embedded and fixed in a transparent resin layer behind relatively large diameter glass beads 4 at a distance from the glass beads 4 to form a layer. A reflective layer 8 made of a metal vapor deposition film or the like is provided on the back side of the transparent resin layer behind the small diameter glass beads 5.
小径のガラスビーズ5としては粒径53〜63μm、屈
折率2.0〜2.2程度のものを使用することが好まし
い0反射層8はガラスビーズ5の背後に位置し、ガラス
ビーズ5の焦点に好ましくは合致するよう調節する焦点
調節樹脂層7の背面に真空蒸着法等公知の方法によりア
ルミニウム膜等の金属膜を形成することにより得られる
。再帰反射シートについて第2図に拡大断面図で示した
下層部aを先に!J!!遺し、該下層部a上に上層部す
を設けた例に基づいて更に説明を行なう、下層部aはガ
ラスビーズ5を保持するガラスビーズ保持樹脂層6とガ
ラスビーズ5の焦点に合わせて樹脂の膜厚を調節するた
めの焦点調節樹脂層7と、この焦点調節樹脂層7の背面
にガラスビーズ5と同心の曲面に形成された金属蒸着膜
等からなる反射層8を備え、さらに必要に応じ、ガラス
ビーズ保持樹脂層6を補強するため表面層9を設ける。It is preferable to use small-diameter glass beads 5 having a particle diameter of 53 to 63 μm and a refractive index of about 2.0 to 2.2. The reflective layer 8 is located behind the glass beads 5 and is located at the focal point of the glass beads 5. This can be obtained by forming a metal film such as an aluminum film on the back surface of the focusing resin layer 7, which is preferably adjusted so as to match the above, by a known method such as a vacuum deposition method. Regarding the retroreflective sheet, start with the lower layer a shown in the enlarged cross-sectional view in Figure 2! J! ! Further explanation will be given based on an example in which an upper layer is provided on the lower layer a. A focusing resin layer 7 for adjusting the film thickness is provided, and a reflecting layer 8 made of a metal vapor deposited film or the like is formed on the back surface of the focusing resin layer 7 in a curved surface concentric with the glass beads 5. , a surface layer 9 is provided to reinforce the glass bead holding resin layer 6.
なお、10はアクリル系樹脂等からなる粘着剤層である
。ガラスビーズ5はガラスビーズ保持樹脂層6中に粒径
の20〜30%を埋入固定されている。表面樹脂層9を
設ける場合その膜厚は10〜30μm程度で充分である
0次に上層部すは下層部aの上にコーティング等により
透明な樹脂層3を設け、この透明な樹脂層3で大径のガ
ラスビーズ4を保持する構造となっており、ここにおけ
る透明な樹脂層3の膜厚は、ガラスビーズ4を固定する
ための最低膜厚としては20μm以上であれば良いが、
実際の路面でのガラスビーズ保持力を考えると少なくと
も70μm以上必要である。膜厚はガラスビーズ4の粒
径と相関性があり、粒径の半分以下が好ましい。したが
って20〜100μmが可能で、好ましい膜厚としては
70〜100μmである。Note that 10 is an adhesive layer made of acrylic resin or the like. The glass beads 5 are embedded and fixed at 20 to 30% of the particle size in the glass bead holding resin layer 6. When providing the surface resin layer 9, it is sufficient to have a film thickness of about 10 to 30 μm.A transparent resin layer 3 is provided on the upper layer (a) or the lower layer (a) by coating or the like, and this transparent resin layer 3 is It has a structure that holds large-diameter glass beads 4, and the transparent resin layer 3 here may have a minimum thickness of 20 μm or more for fixing the glass beads 4.
Considering the ability to hold glass beads on an actual road surface, it is necessary to have a thickness of at least 70 μm. The film thickness has a correlation with the particle size of the glass beads 4, and is preferably half or less of the particle size. Therefore, a film thickness of 20 to 100 μm is possible, and a preferable film thickness is 70 to 100 μm.
膜厚20μm未満ではガラスビーズ4の保持力が低下し
、100μmを超えると輝度が低下するためともに好ま
しくない。If the film thickness is less than 20 μm, the holding power of the glass beads 4 will be reduced, and if it exceeds 100 μm, the brightness will be reduced, which are both undesirable.
なお、再帰反射シート1は上記の製造法に限られるもの
ではなく、大径のガラスビーズ4111I!Iから順次
製造する等、他の方法で製造してもよいことは勿論であ
る。Note that the retroreflective sheet 1 is not limited to the manufacturing method described above, and can be manufactured using large-diameter glass beads 4111I! Of course, other methods such as sequential production starting from I may be used.
再帰反射シート1の背後に結合されるベースシート2は
、変形する路面への順応性と機械的耐久性にすぐれた材
料からなることを要し、主剤としてたとえばアクリロニ
トリルブタジェンゴム(NBR)、インブチレンイソプ
レンゴム(IIR)、クロロプレンゴム(CR)、クロ
ロスルホン化ポリエチレン、ウレタンゴム等の未加硫合
成ゴムや塩化ビニール等の合成樹脂を使用し、これに応
じて炭酸カルシウム粉末等の適当な充填剤。The base sheet 2 bonded to the back of the retroreflective sheet 1 must be made of a material that has excellent adaptability to deforming road surfaces and mechanical durability. Unvulcanized synthetic rubbers such as butylene isoprene rubber (IIR), chloroprene rubber (CR), chlorosulfonated polyethylene, urethane rubber, and synthetic resins such as vinyl chloride are used, and appropriate filling with calcium carbonate powder, etc. is used. agent.
着色用の顔料等を添加し、ロール圧延加工等により厚さ
5關以下のシート状に形成する。Pigments for coloring and the like are added and formed into a sheet with a thickness of 5 mm or less by roll rolling or the like.
ベースシート2の下面には膜厚50μm以上、好ましく
は100〜200μm程度の適当な厚さに接着剤層11
を設ける。また通常はこの接着剤層11の下面に剥離紙
12を貼付するが、使用する接着剤の種類によっては剥
離紙12を使用しないこともある。An adhesive layer 11 is formed on the lower surface of the base sheet 2 to a suitable thickness of 50 μm or more, preferably about 100 to 200 μm.
will be established. Although a release paper 12 is usually attached to the lower surface of the adhesive layer 11, the release paper 12 may not be used depending on the type of adhesive used.
ベースシート2を製造するには、前述したベースシート
の構成材料である未加硫合成ゴムや合成樹脂に充填剤、
顔料等の所望量を添加し、混練して加熱圧延加工により
圧延し、厚さ5關以下の適当な厚さのシート状に成形し
巻取り、場合によりさらに巻戻しつつ剥離紙に50μm
以上の適当な厚さに塗布した接着剤をシート下表面にさ
らに重ね合わせて巻取る。To manufacture the base sheet 2, a filler is added to the unvulcanized synthetic rubber or synthetic resin, which is the constituent material of the base sheet mentioned above.
A desired amount of pigment, etc. is added, kneaded, rolled by hot rolling, formed into a sheet with an appropriate thickness of 5 mm or less, rolled up, and, if necessary, further unrolled and coated with release paper with a thickness of 50 μm.
The adhesive coated to an appropriate thickness is further superimposed on the lower surface of the sheet and rolled up.
またベースシート2は上記組成のベース層とベース層上
に設けられた薄膜の着色層の2層からなる構成としても
よい。この場合ベース層の厚さは1.0〜1.6層mと
し、ベース層上の着色層の厚みは20〜25μm程度と
することが好ましい。Further, the base sheet 2 may have a two-layer structure including a base layer having the above composition and a thin colored layer provided on the base layer. In this case, the thickness of the base layer is preferably 1.0 to 1.6 m, and the thickness of the colored layer on the base layer is preferably about 20 to 25 μm.
ベース層上の薄膜の着色層は、ベース層の上述したと同
様の特徴を存し、かつ、ベース層に緊密−体に接着する
ことを要するとともに路面標示用として所望の色に着色
されていることを要するので、上述したベース層に用い
る未加硫合成ゴムと同種または同性質をもつ異種のもの
に適宜の着色剤を添加したものが好ましい。The thin colored colored layer on the base layer has the same characteristics as those of the base layer described above, and is required to be closely adhered to the base layer and colored in a desired color for road marking. Therefore, it is preferable to use the same type of unvulcanized synthetic rubber or a different type of rubber having the same properties as the unvulcanized synthetic rubber used for the above-mentioned base layer, with an appropriate coloring agent added thereto.
ベース層上に着色層を形成する場合は、いったん巻取ら
れたベース層を巻き戻しつつ、その上表面側に、未加硫
合成ゴム材料を溶剤に溶かして所望の色相を与える着色
剤を添加し調製した流動物を乾燥後の塗膜に所望の厚さ
を与える量塗布することにより着色層を形成する。When forming a colored layer on the base layer, unwind the base layer and add a coloring agent to the upper surface of the unvulcanized synthetic rubber material to give the desired hue by dissolving it in a solvent. A colored layer is formed by applying the prepared fluid in an amount that gives a desired thickness to the dried coating film.
またベースシート2を機械的耐久性に優れた比較的に硬
い上層と路面に対する変形順応性に優れた比較的に柔い
下層の2層からなる構造とすることもできる。この場合
下層を、JISK6301による硬度が30°〜75°
でかつ復元力が50%以下の材料で形成すると、路面に
対する変形順応性が極めて優れ、路面に貼着後剥離する
ことが少い。The base sheet 2 can also have a two-layer structure: a relatively hard upper layer with excellent mechanical durability and a relatively soft lower layer with excellent deformation adaptability to the road surface. In this case, the lower layer has a hardness of 30° to 75° according to JIS K6301.
If it is made of a material that has a strong restoring force of 50% or less, it has extremely good deformation adaptability to the road surface and is less likely to peel off after being attached to the road surface.
ベースシート2をこのような2層構造にする場合、上記
の硬度と復元率は、一方法として、下層の配合中に比較
的に多量の可塑性物質を添加することによって得ること
ができる。可塑性物質の配合全体の中での添加量は2部
以上が必要である。When the base sheet 2 has such a two-layer structure, the hardness and recovery rate described above can be obtained, as one method, by adding a relatively large amount of plastic material to the formulation of the lower layer. The amount of plastic material added in the entire formulation needs to be 2 parts or more.
可塑性物質としては、エラストマー、可塑剤(D。Examples of plastic substances include elastomers and plasticizers (D.
0、P、塩素化パラフィン、エポキシその他)、液状ゴ
ム等が好適である。上層および下層の主剤としてはとも
にアクリロニトリルブタジェンゴム(NBR)、インブ
チレンイソプレンゴム(IIR)、タロロブレンゴム(
CR,) 、等の未加硫合成ゴム゛やクロ17スルホン
化ポリエチレン、塩素化ポリエチレン、塩化ビニール等
の合成樹脂その他路面標示用シート材において公知の材
料を使用することができ、必要に応じて炭酸カルシウム
粉末等の適当な充填剤、着色用の顔料等を添加し、厚さ
2間以下のシート状にロール圧延加工等により形成する
。下層の下面には膜厚50μm以上、好ましくは100
〜200μm程度の適当な厚さに接着剤層を設ける。接
着剤層は離型紙に所望の厚さの接着剤を塗布し、下層の
下表面に重ね合わせることにより形成することができる
。0, P, chlorinated paraffin, epoxy, etc.), liquid rubber, etc. are suitable. The main ingredients for both the upper and lower layers are acrylonitrile butadiene rubber (NBR), inbutylene isoprene rubber (IIR), and talolobrene rubber (
Unvulcanized synthetic rubber such as CR, ), synthetic resin such as chloro-17 sulfonated polyethylene, chlorinated polyethylene, vinyl chloride, and other known materials for road marking sheet materials can be used, and if necessary, A suitable filler such as calcium carbonate powder, pigment for coloring, etc. are added, and a sheet having a thickness of 2 cm or less is formed by rolling or the like. The lower surface of the lower layer has a film thickness of 50 μm or more, preferably 100 μm or more.
An adhesive layer is provided to a suitable thickness of about 200 μm. The adhesive layer can be formed by applying adhesive to a desired thickness on release paper and overlapping it on the lower surface of the lower layer.
この2層構造のベースシートを製造するには、上層およ
び下層の構成材料である未加硫合成ゴムや合成樹脂に充
填剤、顔料、等の所望量を添加し、下層にはさらに可塑
性物質の所望量を添加して混練し、次いで加熱圧延加工
により圧延し、それぞれ厚さ2mm以下の適当な厚さの
シート状の上層および下層に成形し、離型紙に50μm
以上の適当な厚さに塗布した接着剤を下層の下表面に重
ね合わせる。To manufacture this two-layer base sheet, desired amounts of fillers, pigments, etc. are added to the unvulcanized synthetic rubber or synthetic resin that constitutes the upper and lower layers, and a plastic material is added to the lower layer. The desired amount is added and kneaded, and then rolled by hot rolling to form upper and lower layers of appropriate thickness of 2 mm or less, respectively, and a release paper with a thickness of 50 μm
The adhesive coated to an appropriate thickness is layered on the lower surface of the lower layer.
こうして上層および下層を用意した後、下層の上表面に
接着剤を塗布するか、または下11の上表面付近を加熱
により軟化せしめて上層を重ね合わせ、両者を接着する
。または既成の上層を押出し成形工程で押出された下層
上に重ね合せ、加圧ロールで圧着させ一体化させる。After preparing the upper layer and the lower layer in this way, an adhesive is applied to the upper surface of the lower layer, or the vicinity of the upper surface of the lower layer 11 is softened by heating, and the upper layer is superimposed and bonded together. Alternatively, the existing upper layer is superimposed on the lower layer extruded in an extrusion molding process, and the layers are pressed and bonded together using a pressure roll.
また、このように上層と下層を別々のシートとして製造
しこれら2枚のシートを重ね合わせ接合するかわりに下
層の配合により1枚のペースシートを形成し、その上半
部を電子線照射により硬化させて上層となし、電子線照
射を行わない下半部を下層とする等の方法により、上層
と下層を最初から一体のベースシートとして形成するよ
うにしてもよい。Also, instead of manufacturing the upper and lower layers as separate sheets and then stacking and joining these two sheets together, a single pace sheet is formed by the composition of the lower layer, and the upper half is cured by electron beam irradiation. The upper layer and the lower layer may be formed as an integral base sheet from the beginning by, for example, forming the upper layer as the upper layer and using the lower half portion that is not irradiated with the electron beam as the lower layer.
本発明の路面標示用シート材は、たとえば上記のように
形成された再帰反射シート1と、上記方法により別途に
成形したベースシート2とを熱圧着によりラミネートす
ることにより得ることができる。The road marking sheet material of the present invention can be obtained, for example, by laminating the retroreflective sheet 1 formed as described above and the base sheet 2 separately formed by the above method by thermocompression bonding.
次に、本発明の一実施例につき説明する。 Next, one embodiment of the present invention will be described.
(1)再帰反射シート1の下層部aの形成キャリーフィ
ルム(ポリエステルフィルム)に表面樹脂層9を形成す
る樹脂として変性アクリル樹脂100部と架橋剤として
メラミン樹脂またはイソシアネート10部を混合してな
る樹脂を膜厚10〜30μmになるように塗布し、乾燥
硬化させて表面樹脂層9を形成した。(1) Formation of the lower layer a of the retroreflective sheet 1 A resin made by mixing 100 parts of a modified acrylic resin as a resin for forming the surface resin layer 9 on a carrier film (polyester film) and 10 parts of a melamine resin or isocyanate as a crosslinking agent. was applied to a film thickness of 10 to 30 μm, and dried and cured to form a surface resin layer 9.
次に表面樹脂層9上にガラスビーズ保持樹脂層6を形成
する樹脂として変性アクリル樹脂100部と架橋剤15
部を混合してなる樹脂を膜厚10〜40μmとなるよう
に塗布し、半乾燥状態で粒径53〜63μm、屈折率2
.2のガラスビーズ5を均一に散布し、樹脂を乾燥硬化
させてガラスビーズ5を固定し、ガラスビーズ保持樹脂
層6を形成した。Next, 100 parts of a modified acrylic resin and 15 parts of a crosslinking agent are used as resins to form a glass bead holding resin layer 6 on the surface resin layer 9.
A resin prepared by mixing the above parts is applied to a film thickness of 10 to 40 μm, and in a semi-dry state, the particle size is 53 to 63 μm and the refractive index is 2.
.. The glass beads 5 of No. 2 were uniformly scattered, and the resin was dried and hardened to fix the glass beads 5, thereby forming a glass bead holding resin layer 6.
次に、ガラスビーズ保持樹脂層6のガラスビーズ51I
IIIに、焦点樹脂調節層7を形成する樹脂として変性
アクリル樹脂100部、架橋剤5〜10部を混合してな
る樹脂をMIBKとトルエンの混合溶液にとかした樹脂
を溶剤を揮発した後の状態で約30 t / trrに
なるよ、うに塗布し、乾燥硬化させて焦点調節樹脂層7
を形成した。Next, the glass beads 51I of the glass bead holding resin layer 6 are
In III, a resin formed by mixing 100 parts of a modified acrylic resin and 5 to 10 parts of a crosslinking agent as a resin for forming the focal resin adjustment layer 7 is dissolved in a mixed solution of MIBK and toluene, and the resin is in a state after the solvent is evaporated. The focus adjusting resin layer 7 is coated so that it becomes about 30 t/trr, dried and hardened.
was formed.
こうして形成した焦点調節樹脂層7の露出面に真空蒸着
方法によりアルミニウム反射膜を蒸着させることにより
反射層8を形成した0次にアクリル系粘着剤を剥離紙に
塗布し、アルミニウム蒸着面にラミネートした後トップ
層9のキャリアフィルムを除き再帰反射シート1の下層
部aを完成した。この再帰反射シート1の下層部aの樹
脂の屈折°率は1.52であった。A reflective layer 8 was formed by depositing an aluminum reflective film on the exposed surface of the focus adjustment resin layer 7 thus formed using a vacuum deposition method.Next, an acrylic adhesive was applied to a release paper and laminated on the aluminum deposited surface. The lower layer a of the retroreflective sheet 1 was completed by removing the carrier film of the rear top layer 9. The refractive index of the resin in the lower layer a of this retroreflective sheet 1 was 1.52.
(2)再帰反射シート1の上層部すの形成再帰反射シー
ト1の下層部aの表面に上層部すを形成する樹脂として
変性アクリル樹脂100部、架橋剤15部を混合してな
る樹脂を膜厚的75μmとなるように塗布し、半乾燥状
態で粒径350〜500μm、屈折率1.90〜1.9
2のガラスビーズ4を全表面の32%となるように均一
に散布し樹脂を乾燥硬化させることにより上層部すを形
成した。上層部すの樹脂の屈折率は1,52であった。(2) Formation of the upper layer of the retroreflective sheet 1 A resin formed by mixing 100 parts of a modified acrylic resin and 15 parts of a crosslinking agent is coated on the surface of the lower layer a of the retroreflective sheet 1 to form the upper layer. Coating to a thickness of 75 μm, semi-dry particle size of 350 to 500 μm, refractive index of 1.90 to 1.9
The upper layer was formed by uniformly scattering the glass beads 4 of No. 2 to cover 32% of the entire surface and drying and curing the resin. The refractive index of the resin in the upper layer was 1.52.
(3)ベースシート2の形成
ベースシート2として、機械的耐久性に優れた比較的に
硬い上層と路面に対する変形順応性に優れた比較的に柔
い下層の2層からなるものを形成した。(3) Formation of base sheet 2 The base sheet 2 was formed of two layers: a relatively hard upper layer with excellent mechanical durability and a relatively soft lower layer with excellent deformation adaptability to the road surface.
上層を形成するためNBR30部、BR5部、石油樹脂
15部、、 T I O230部、、 Ca C031
40部を混練し、加工温度90℃で押出圧延により厚さ
0.711m、幅1 、000ru+のシー1〜状に成
形した。また下層を形成するため、NBR30部、BR
5部、石油樹脂15部、TiO□30部、Ca C03
140部、液状ゴム5部、塩素化ポリエチレン7部、D
、O,P5部を上層と同様の方法により混練し押出圧延
により厚さ 0.7w+、幅1.000+mのシート状
に成形した。To form the upper layer, 30 parts of NBR, 5 parts of BR, 15 parts of petroleum resin, 230 parts of TIO, Ca C031
40 parts were kneaded and formed into a sheet 1~ with a thickness of 0.711 m and a width of 1,000 ru+ by extrusion rolling at a processing temperature of 90°C. In addition, to form the lower layer, 30 parts of NBR, BR
5 parts, petroleum resin 15 parts, TiO□30 parts, Ca C03
140 parts, liquid rubber 5 parts, chlorinated polyethylene 7 parts, D
.
下層の下面には100μmに感圧接着剤を塗布し剥離紙
12を重ね合わせ接着剤層11を形成した。次に下層の
上表面に感圧接着剤を塗布した後上層を重ね合わせ両者
を接着し、上層の上面にも感圧接着剤を塗布した剥離紙
を重ね合わせベースシート2を完成した。A pressure-sensitive adhesive was applied to the lower surface of the lower layer to a thickness of 100 μm, and a release paper 12 was overlaid to form an adhesive layer 11. Next, a pressure-sensitive adhesive was applied to the upper surface of the lower layer, the upper layer was overlapped, and both were adhered, and a release paper coated with a pressure-sensitive adhesive was also overlaid on the upper surface of the upper layer to complete the base sheet 2.
(4)路面標示用シート材の完成
再帰反射シート1の裏面にラミネートされた剥離紙とベ
ースシート2の上層の上面にラミネートされた剥離紙を
取除き、再帰反射シート1とベースシート2を相互に接
着剤側で熱圧着してラミネートし本発明の高輝度全天候
型路面標示用シート材を完成した。(4) Completion of sheet material for road markings Remove the release paper laminated on the back side of the retroreflective sheet 1 and the release paper laminated on the upper surface of the upper layer of the base sheet 2, and attach the retroreflective sheet 1 and base sheet 2 to each other. The adhesive was heat-pressed and laminated to complete the high brightness all-weather road marking sheet material of the present invention.
(5)再帰反射輝度の測定
上記実施例の路面標示用シート材の再帰反射輝度を光線
の入射角度を60”と80°の間で種々変えてガラスビ
ーズの乾燥状態と水に濡れた状態のそれぞれについて測
定した。比較のため、従来品として前記米国特許筒4,
388,359号記載のタイプの路面標示用シート材(
以下r従来品A」という)および前記特開昭62−21
1403号公報記載のタイプの路面巳示用シート材(以
下「従来品B」という)について、上記実施例と同一条
件の下に再帰反射輝度をそれぞれ測定した。(5) Measurement of retroreflection brightness The retroreflection brightness of the road marking sheet material of the above example was measured by varying the angle of incidence of the light beam between 60" and 80°. Measurements were made for each.For comparison, the above-mentioned U.S. patent cylinder 4,
Road marking sheet material of the type described in No. 388,359 (
(hereinafter referred to as "conventional product A") and the above-mentioned JP-A-62-21
Regarding the road marking sheet material of the type described in Publication No. 1403 (hereinafter referred to as "conventional product B"), the retroreflection brightness was measured under the same conditions as in the above example.
輝度の測定はJISZ9117による輝度測定方法によ
り行い、ガラスビーズが水に濡れた状態における輝度に
ついては、アクリル板内に水を入れて製品を完全に濡ら
した状態で測定後、アクリル板による輝度の減少を調整
しな。これら各路面標示用シート材の再帰反射輝度の測
定結果を下表1および第3図に示す。The brightness was measured using the brightness measurement method according to JIS Z9117. For the brightness when the glass beads were wet with water, the brightness was measured with the product completely wet by pouring water into the acrylic plate, and then the decrease in brightness due to the acrylic plate was measured. Don't adjust it. The measurement results of the retroreflection brightness of each of these road marking sheet materials are shown in Table 1 below and FIG. 3.
以上の測定結果から、本発明の路面標示用シート材は6
0°〜80°の大きな入射角において従来品に比較して
高い再帰反射輝度を有していることが判る。また従来品
は、いずれもガラスビーズが水に濡れた状態においては
乾燥状態よりも輝度が落ちるのに対し、本発明の路面標
示用シート材場合は、ガラスビーズが水に濡れた状態の
方がむしろ輝度が高いという結果が得られた。From the above measurement results, the road marking sheet material of the present invention is 6
It can be seen that it has higher retroreflection brightness than conventional products at large incident angles of 0° to 80°. In addition, in all conventional products, the brightness is lower when the glass beads are wet than when they are dry, but in the case of the road marking sheet material of the present invention, the brightness is lower when the glass beads are wet. Rather, the result was that the brightness was high.
また上記本発明の実施例について、再帰反射シート1中
の焦点調節樹脂層7の膜厚が再帰反射輝度に及ぼす影響
を調べるため、焦点調節樹脂層7の樹脂の塗布量を種々
変えた時の再帰反射輝度を上記と同じ測定方法により測
定した。塗布量を23.49g/−のものをサンプルA
、29゜77 t / gtfのものをサンプルB、3
5.38g/dのものをサンプルC1として測定を行っ
た結果を下表2および第4図に示す。Furthermore, in order to investigate the influence of the film thickness of the focus adjusting resin layer 7 in the retroreflective sheet 1 on the retroreflection brightness in the above-mentioned embodiment of the present invention, when the amount of resin applied in the focus adjusting resin layer 7 was varied. Retroreflection brightness was measured using the same measurement method as above. Sample A with coating amount of 23.49g/-
, 29°77 t/gtf as sample B, 3
5.38 g/d was measured as sample C1, and the results are shown in Table 2 below and FIG.
以上の測定結果から、本発明の路面標示用シート材にお
いては、再帰反射シート1中の焦点樹脂調節層7の膜厚
は、サンプルBの場合に最高の再帰反射輝度が得られる
ことが判る。またサンプルA、B、Cのいずれの場合も
、ガラスビーズが乾燥状態の時よりもガラスビーズが水
に濡れた状態の時の方が再帰反射輝度が高いという結果
が得られた。From the above measurement results, it can be seen that in the road marking sheet material of the present invention, the thickness of the focusing resin adjustment layer 7 in the retroreflective sheet 1 is such that sample B provides the highest retroreflection brightness. In addition, in all of Samples A, B, and C, the results showed that the retroreflection brightness was higher when the glass beads were wet with water than when the glass beads were dry.
以上述べたように、本発明によれば60’以上の大きな
入射角で入射された光線は、再帰反射シートの大径のビ
ーズから透明な樹脂を介して小径のビーズに入射され反
射層において反射された後小径のビーズ、透明な樹脂お
よび大径のビーズを通過して再帰反射される。したがっ
て大径のビーズ、小径のビーズおよび樹脂の各屈折率お
よび大径のビーズおよび小径のビーズの粒径および大径
のビーズと小径のビーズとの間の樹脂の間隔等を適宜選
択し組合わせることにより60’以上の大きな入射角に
おいて従来のものに比べより高い再帰反射効率を得るこ
とができる。As described above, according to the present invention, light rays incident at a large incident angle of 60' or more are incident on the small diameter beads from the large diameter beads of the retroreflective sheet through the transparent resin, and are reflected at the reflective layer. After that, it passes through small diameter beads, transparent resin and large diameter beads and is retro-reflected. Therefore, the refractive index of large-diameter beads, small-diameter beads, and resin, the particle size of large-diameter beads and small-diameter beads, and the spacing of resin between large-diameter beads and small-diameter beads, etc. are appropriately selected and combined. As a result, it is possible to obtain higher retroreflection efficiency than the conventional one at a large incident angle of 60' or more.
また、上記本発明構成を採ることにより、大径のビーズ
の露出部分が水膜に覆われた場合でも再帰反射輝度は乾
燥状態と比べて実質的に低下することがなく、実施例に
おいてはむしろ乾燥状態に比べて再帰反射輝度が向上す
るので、各ガラスビーズの粒径、各ガラスビーズ間の間
隔等を適宜選択し組合せることにより雨天時の再帰反射
輝度を高めることができる。Furthermore, by adopting the above-mentioned configuration of the present invention, even if the exposed portion of the large-diameter bead is covered with a water film, the retroreflection brightness does not substantially decrease compared to the dry state, and in the example, it is possible to Since the retroreflection brightness is improved compared to the dry state, the retroreflection brightness in rainy weather can be increased by appropriately selecting and combining the particle size of each glass bead, the interval between each glass bead, etc.
また大径のガラスビーズが空気中に露出して設けである
ので照射される光線が広角度であってら受光量が多く、
下層の反射層まで多くの光量を取り入れることができる
。In addition, since the large-diameter glass beads are exposed in the air, the irradiated light beam is wide-angle and receives a large amount of light.
A large amount of light can be taken in to the lower reflective layer.
また、再帰反射シート層の背部に未加硫ゴム等を主体と
するベースシートが設けられているため車輌の通過時に
表面ガラスビーズは車輌による衝撃をベースシートで緩
和され脱落する恐れが少ない。Further, since a base sheet mainly made of unvulcanized rubber or the like is provided on the back of the retroreflective sheet layer, when a vehicle passes by, the surface glass beads are less likely to fall off because the base sheet cushions the impact of the vehicle.
また、再帰反射シートの上層部の樹脂の膜厚を20〜1
00μmの範囲とすることにより、2゜μm未満ではガ
ラスビーズが脱落し易く、100μmを超えると反射輝
度が低下するという不利益を除くことができる。In addition, the thickness of the resin in the upper layer of the retroreflective sheet was increased by 20 to 1
By setting the thickness in the range of 00 μm, it is possible to eliminate the disadvantages that the glass beads tend to fall off when the diameter is less than 2 μm, and the reflected brightness decreases when the diameter exceeds 100 μm.
また、再帰反射シートの上層部の大径のガラスビーズの
粒径を0.25〜2nmの範囲とすることにより、Oo
−25r未満では輝度が低く、2關を超えると脱落し易
いという欠点を除くことができる。In addition, by setting the particle size of the large-diameter glass beads in the upper layer of the retroreflective sheet to a range of 0.25 to 2 nm, Oo
It is possible to eliminate the drawbacks that the brightness is low when it is less than -25r, and it is easy to fall off when it exceeds 2 r.
さらに、比教的大径のガラスビーズの屈折率を1.75
〜2.2とすることにより、1.75未満の輝度の低下
と2.2を超えた場合の価格上昇を除くことができる。Furthermore, the refractive index of the large-diameter glass beads is 1.75.
By setting the value to 2.2, it is possible to eliminate a decrease in brightness below 1.75 and a price increase when it exceeds 2.2.
添付図面において、第1図は本発明の高輝度全天候型路
面標示用シート材の断面図、第2図は再帰反射シートの
下層部の拡大断面図、第3図は本発明の一実施例の再帰
反射輝度を従来品と比較して示すグラフ、第4図は本発
明の実施例における焦点樹脂調節層の膜厚と再帰反射輝
度の関係を示すグラフである。
1・・・再帰反射シート、2・・・ベースシート、3・
・・樹脂、4・・・大径のガラスビーズ、5・・・小径
のガラスビーズIn the accompanying drawings, FIG. 1 is a cross-sectional view of a high-intensity all-weather road marking sheet material of the present invention, FIG. 2 is an enlarged cross-sectional view of the lower layer of a retroreflective sheet, and FIG. A graph showing the retroreflection brightness in comparison with a conventional product. FIG. 4 is a graph showing the relationship between the film thickness of the focusing resin adjustment layer and the retroreflection brightness in an example of the present invention. 1... Retroreflective sheet, 2... Base sheet, 3...
...Resin, 4...Large diameter glass beads, 5...Small diameter glass beads
Claims (3)
合された比較的大径のガラスビーズ層と該比較的大径の
ガラスビーズの背後の透明な樹脂層中に該比較的大径の
ガラスビーズから間隔をおいて埋入固定された比較的小
径のガラスビーズ層と該樹脂層の背面に設けられた金属
蒸着膜等からなる反射層とを有する再帰反射シートと、
該再帰反射シートの背後に結合されたゴム・合成樹脂等
の材料からなるベースシートとを備えることを特徴とす
る高輝度全天候型路面標示用シート材。(1) A layer of relatively large diameter glass beads that are at least partially exposed to the air and bonded with a transparent resin, and a transparent resin layer behind the relatively large diameter glass beads that has a relatively large diameter. a retroreflective sheet having a layer of relatively small diameter glass beads embedded and fixed at a distance from the glass beads of the sheet, and a reflective layer made of a metal vapor deposited film or the like provided on the back surface of the resin layer;
A high brightness all-weather road marking sheet material comprising a base sheet made of a material such as rubber or synthetic resin bonded behind the retroreflective sheet.
2mmである請求項1記載の高輝度全天候型路面標示用
シート材。(2) The particle size of the relatively large glass beads is 0.25~
The high brightness all-weather road marking sheet material according to claim 1, which has a thickness of 2 mm.
〜2.2である請求項1記載の高輝度全天候型路面標示
用シート材。(3) The refractive index of the relatively large diameter glass beads is 1.75.
The high-intensity all-weather road marking sheet material according to claim 1, which has a luminance of 2.2 to 2.2.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1049363A JPH0823739B2 (en) | 1989-03-01 | 1989-03-01 | High brightness all weather type road marking sheet material |
CA002011055A CA2011055C (en) | 1989-03-01 | 1990-02-27 | High-brightness all-weather type pavement marking sheet material |
DK052690A DK52690A (en) | 1989-03-01 | 1990-02-28 | Traffic line MATERIAL |
PT93295A PT93295A (en) | 1989-03-01 | 1990-02-28 | MATERIAL IN LEAVES TO MARK PAVEMENTS RESISTANT TO ALL TYPES OF CLIMATAL CONDITIONS AND WITH HIGH BRIGHTNESS |
FI901022A FI901022A0 (en) | 1989-03-01 | 1990-02-28 | REFLEKTERANDE ARKMATERIAL FOER MAERKNING AV VAEGBELAEGGNING VID ALLA VAEDER. |
DE9090302123T DE69000488T2 (en) | 1989-03-01 | 1990-02-28 | ALL-WEATHER-APPROVED ROAD MARKING MATERIAL RAIL WITH HIGH VISIBILITY. |
AT90302123T ATE82785T1 (en) | 1989-03-01 | 1990-02-28 | HIGH VISIBILITY ALL-WEATHER ROAD MARKING MATERIAL. |
EP90302123A EP0385746B1 (en) | 1989-03-01 | 1990-02-28 | High-brightness all-weather type pavement marking sheet material |
NO90900938A NO900938L (en) | 1989-03-01 | 1990-02-28 | VEIMERKINGSMATERIALE. |
SG33393A SG33393G (en) | 1989-03-01 | 1993-03-24 | High-brightness all-weather type pavement marking sheet material |
HK707/93A HK70793A (en) | 1989-03-01 | 1993-07-22 | High-brightness all-weather type pavement marking sheet material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1049363A JPH0823739B2 (en) | 1989-03-01 | 1989-03-01 | High brightness all weather type road marking sheet material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02228692A true JPH02228692A (en) | 1990-09-11 |
JPH0823739B2 JPH0823739B2 (en) | 1996-03-06 |
Family
ID=12828935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1049363A Expired - Lifetime JPH0823739B2 (en) | 1989-03-01 | 1989-03-01 | High brightness all weather type road marking sheet material |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0385746B1 (en) |
JP (1) | JPH0823739B2 (en) |
AT (1) | ATE82785T1 (en) |
CA (1) | CA2011055C (en) |
DE (1) | DE69000488T2 (en) |
DK (1) | DK52690A (en) |
FI (1) | FI901022A0 (en) |
HK (1) | HK70793A (en) |
NO (1) | NO900938L (en) |
PT (1) | PT93295A (en) |
SG (1) | SG33393G (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100373612B1 (en) * | 1997-09-30 | 2003-04-21 | 가부시키가이샤 시세이도 | Colored light retroreflection material and retroreflective hologram reproducing body using the same |
JP2006219622A (en) * | 2005-02-14 | 2006-08-24 | Aica Kogyo Co Ltd | Coating composition |
JP2010156997A (en) * | 1999-04-02 | 2010-07-15 | Three M Innovative Properties Co | Retroreflective article |
JP2010170146A (en) * | 1998-10-20 | 2010-08-05 | Three M Innovative Properties Co | Pavement marking article |
JP2018533682A (en) * | 2015-10-06 | 2018-11-15 | スリーエム イノベイティブ プロパティズ カンパニー | Anti-slip article that emits light by front light reception |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9106946D0 (en) * | 1991-04-03 | 1991-05-22 | R S Clare & Company Limited | Road marking compositions |
ES2096520B1 (en) * | 1994-05-24 | 1997-08-16 | Pinturas Jaque S L | HORIZONTAL SOUND SIGNAL. |
JP3670343B2 (en) * | 1995-06-16 | 2005-07-13 | ミネソタ マイニング アンド マニュファクチャリング カンパニー | Retroreflective structure and manufacturing method thereof |
US6703108B1 (en) | 1995-06-29 | 2004-03-09 | 3M Innovative Properties Company | Wet retroreflective marking material |
ZA965383B (en) * | 1995-06-29 | 1997-12-25 | Minnesota Mining & Mfg | High entrance angle retroreflective article and method of making. |
TW297865B (en) * | 1995-06-29 | 1997-02-11 | Minnesota Mining & Mfg | |
DE69604402T2 (en) * | 1995-06-29 | 2000-03-23 | Minnesota Mining & Mfg | RETROREFLECTIVE MARKING BODY FOR WET ENVIRONMENTAL CONDITIONS |
US6303058B1 (en) | 1996-06-27 | 2001-10-16 | 3M Innovative Properties Company | Method of making profiled retroreflective marking material |
US5777791A (en) * | 1996-11-26 | 1998-07-07 | Minnesota Mining And Manufacturing Company | Wet retroreflective pavement marking articles |
EP0983402B1 (en) * | 1997-05-20 | 2002-04-03 | Akzo Nobel N.V. | Retroreflecting road marking system |
US6247818B1 (en) | 1998-10-20 | 2001-06-19 | 3M Innovative Properties Company | Method for making retroreflective elements having enhanced retroreflectivity under dry and/or wet conditions |
ITBS20010056A1 (en) * | 2001-07-06 | 2003-01-06 | Graziano Fabiani | SIGN TAPE IN PARTICULAR FOR ROAD SIGNALS AND PROCEDURE FOR THE REALIZATION OF THE SAME |
RU2447227C1 (en) * | 2010-09-21 | 2012-04-10 | Сергей Владимирович Карпеев | Horizontal road marking |
ES2624536B1 (en) * | 2016-01-13 | 2018-04-24 | Industrias Samar't, S.A. | RETRO-REFLECTING SHEET AND PROCEDURE FOR OBTAINING THE SAME |
WO2019155359A2 (en) * | 2018-02-06 | 2019-08-15 | 3M Innovative Properties Company | Decorative sheet for road surface, precursor for graphic construct, method of producing graphic construct sheet, and method of installing decorative sheet for road surface |
KR102530680B1 (en) * | 2021-10-18 | 2023-05-10 | 주) 길빛 | Painting method of traffic lane for assurance view |
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- 1990-02-28 EP EP90302123A patent/EP0385746B1/en not_active Expired - Lifetime
- 1990-02-28 FI FI901022A patent/FI901022A0/en not_active IP Right Cessation
- 1990-02-28 PT PT93295A patent/PT93295A/en not_active Application Discontinuation
- 1990-02-28 AT AT90302123T patent/ATE82785T1/en not_active IP Right Cessation
- 1990-02-28 DE DE9090302123T patent/DE69000488T2/en not_active Expired - Fee Related
- 1990-02-28 NO NO90900938A patent/NO900938L/en unknown
- 1990-02-28 DK DK052690A patent/DK52690A/en not_active Application Discontinuation
-
1993
- 1993-03-24 SG SG33393A patent/SG33393G/en unknown
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JPS561086A (en) * | 1979-06-16 | 1981-01-08 | Process Bunkadou Kk | Producing reflective object containing fine transparent balls |
JPS57133004U (en) * | 1981-02-16 | 1982-08-19 | ||
JPS63291086A (en) * | 1987-05-25 | 1988-11-28 | 三共理化学株式会社 | Recurrent reflector and manufacture thereof |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100373612B1 (en) * | 1997-09-30 | 2003-04-21 | 가부시키가이샤 시세이도 | Colored light retroreflection material and retroreflective hologram reproducing body using the same |
JP2010170146A (en) * | 1998-10-20 | 2010-08-05 | Three M Innovative Properties Co | Pavement marking article |
JP2010156997A (en) * | 1999-04-02 | 2010-07-15 | Three M Innovative Properties Co | Retroreflective article |
JP2006219622A (en) * | 2005-02-14 | 2006-08-24 | Aica Kogyo Co Ltd | Coating composition |
JP2018533682A (en) * | 2015-10-06 | 2018-11-15 | スリーエム イノベイティブ プロパティズ カンパニー | Anti-slip article that emits light by front light reception |
Also Published As
Publication number | Publication date |
---|---|
HK70793A (en) | 1993-07-30 |
SG33393G (en) | 1993-05-21 |
FI901022A0 (en) | 1990-02-28 |
PT93295A (en) | 1991-10-15 |
CA2011055C (en) | 1995-04-25 |
DK52690D0 (en) | 1990-02-28 |
DE69000488T2 (en) | 1993-06-09 |
CA2011055A1 (en) | 1990-09-01 |
DE69000488D1 (en) | 1993-01-07 |
EP0385746B1 (en) | 1992-11-25 |
JPH0823739B2 (en) | 1996-03-06 |
NO900938D0 (en) | 1990-02-28 |
DK52690A (en) | 1990-09-02 |
NO900938L (en) | 1990-09-03 |
ATE82785T1 (en) | 1992-12-15 |
EP0385746A1 (en) | 1990-09-05 |
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