Small glass globe type retroreflection sheet

Abstract

The invention discloses a small glass globe type retroreflection sheet. Retroreflection sheets in prior art are poor in color rendering, and the retroreflection sheet sequentially comprises a surface protection layer, a printing layer, a clamping layer, a focus point forming layer, a specular layer, an adhesive layer and protection paper from an incidence direction of light; and a glass globe is arranged between the clamping layer and the focus point forming layer, a coloring layer is arranged at the position between the clamping layer and the focus point forming layer, and the position is free of the glass globe. According to the small glass globe type retroreflection sheet, the color rendering performance is good, the coloring layer can be deformed by moving powder bodies, unity is kept, and simultaneously, excellent flexibility is achieved.

Description

technical field [0001] The invention relates to a retroreflective sheet, in particular to a tiny glass ball type retroreflective sheet. Background technique [0002] Retroreflective sheeting is widely used in traffic signs, vehicle license plates, certification labels, or retroreflective RFID (radio wave identification) labels due to its excellent nighttime visibility. As this type of retroreflective sheeting, there are well-known retroreflective sheetings of microscopic glass sphere type, and retroreflective sheetings with colors such as white and red. [0003] Japanese Laid-Open Patent Publication No. 27-34488 (Patent Document 1) describes such a microsphere-type retroreflective sheeting. The retroreflective sheeting described in this patent document contains many tiny glass spheres between the clamping layer and the focus forming layer. It is described that the sandwiching layer is formed of colored resin. That is, the sandwich layer that is located on the light incide...

AI Technical Summary

Problems solved by technology

[0005] However, in the retroreflective sheeting described in Patent Document 1, the sandwich layer sandwiching a plurality of glass bulbs is made of a light-transmitting colored resin, so the color rendering property may be poor.

For the retroreflective sheeting described in Patent Document 2, if the colored sandwiching layer is opaque, the color rendering will be better, but even such a retroreflective sheet also faces more excellent color rendering requirements.

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