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Internationally accepted safety signs are mainly divided into the following categories:
Safety signs have different materials and properties according to their application scenarios and customer needs. According to the specifications of the ISO17398 standard, the materials and performance of safety signs are mainly classified from the following six elements:
According to such classification standards, we can quickly mark the quality requirements of safety markings, for example, a safety sign complying with the requirements of this International Standard and with the following attributes:
Interior use (I)
Made of rigid metal (MR)
With phosphorescent properties with phosphorescent classification B (PB)
Illumination method externally (E)
Requiring mechanical fixing (M)
With an intermediate surface gloss (I)
The Safety sign will mark as ISO 17398-I-MR-PB-E-M-I
In some necessary cases, because safety signs need to be identifiable in the night environment, safety signs need to be made of special luminous materials. The luminous performance of luminous materials is divided into the following 4 levels:
