A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a retroreflective sheet that offers improved visibility as well as improved brightness.SOLUTION: A retroreflective sheet 1 of the present invention includes a non-transparent layer 20 which is non-transmissive and is provided in a predetermined pattern on a retroreflective layer 10 on a side of a surface F2 constituting an interface on a holder layer section 12 side thereof. Viewing the retroreflective sheet 1 from the front on a side of the non-transparent layer 20 side, the non-transparent layer 20 partially covers the surface F2 of the retroreflective layer 10 such that area occupied by the non-transparent layer 20 is 50-80%, inclusive, of total area of the surface F2. When the surface F2 is divided into unit areas of 1 mm square, a ratio of the number of unit areas occupied by the non-transparent layer 20 by 50% or more (non-transparent unit area) to the total number of the unit areas is no less than 95.0%.SELECTED DRAWING: Figure 1
【課題】 明度を改善しつつ、視認性を向上させ得る再帰反射シートを提供する。【解決手段】 本発明の再帰反射シート１は、再帰反射層１０の保持体層部１２側の界面である一面Ｆ２側に所定模様で設けられる光不透過性の不透明層２０が備えられる。この再帰反射シート１を不透明層２０側の正面から視た場合、不透明層２０は、再帰反射層１０の一面Ｆ２を部分的に覆い、当該不透明層２０の面積の前記一面Ｆ２の面積に対する比率は５０％以上８０％以下である。また、前記一面Ｆ２を１ｍｍ四方の単位領域で区分けした時に、当該単位領域の全個数に対する、不透明層２０を５０％以上占める単位領域（不透明単位領域）の個数の比率は、９５．０％以上である。【選択図】図１
PROBLEM TO BE SOLVED: To provide a retroreflective sheet that offers improved visibility as well as improved brightness.SOLUTION: A retroreflective sheet 1 of the present invention includes a non-transparent layer 20 which is non-transmissive and is provided in a predetermined pattern on a retroreflective layer 10 on a side of a surface F2 constituting an interface on a holder layer section 12 side thereof. Viewing the retroreflective sheet 1 from the front on a side of the non-transparent layer 20 side, the non-transparent layer 20 partially covers the surface F2 of the retroreflective layer 10 such that area occupied by the non-transparent layer 20 is 50-80%, inclusive, of total area of the surface F2. When the surface F2 is divided into unit areas of 1 mm square, a ratio of the number of unit areas occupied by the non-transparent layer 20 by 50% or more (non-transparent unit area) to the total number of the unit areas is no less than 95.0%.SELECTED DRAWING: Figure 1
【課題】 明度を改善しつつ、視認性を向上させ得る再帰反射シートを提供する。【解決手段】 本発明の再帰反射シート１は、再帰反射層１０の保持体層部１２側の界面である一面Ｆ２側に所定模様で設けられる光不透過性の不透明層２０が備えられる。この再帰反射シート１を不透明層２０側の正面から視た場合、不透明層２０は、再帰反射層１０の一面Ｆ２を部分的に覆い、当該不透明層２０の面積の前記一面Ｆ２の面積に対する比率は５０％以上８０％以下である。また、前記一面Ｆ２を１ｍｍ四方の単位領域で区分けした時に、当該単位領域の全個数に対する、不透明層２０を５０％以上占める単位領域（不透明単位領域）の個数の比率は、９５．０％以上である。【選択図】図１
RETROREFLECTIVE SHEET
再帰反射シート
SHIOMI TOSHIAKI (author)
2016-06-23
Patent
Electronic Resource
Japanese
IPC:
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
G09F
DISPLAYING
,
Anzeigewesen