Materials used for IMO safety signs Photoluminescent Self Adhesive Vinyl (PV) Description Flexible PVC foil with a photoluminescent layer. Luminance Min. 50/10 mcd/m2 (after 10 and 60 min) DIN 67 510 requires 20/2,8 mcd/m2 Thickness Approx. 0,35 mm Weight Approx. 500g/m2 Indoor durability Approx. 10 years Outdoor durability Approx. 3 years Photoluminescent Self Adhesive Vinyl (PV) Description Flexible PVC foil with a photoluminescent layer. Luminance Min. 50/10 mcd/m2 (after 10 and 60 min) DIN 67 510 requires 20/2,8 mcd/m2 Thickness Approx. 0,35 mm Weight Approx. 500g/m2 Indoor durability Approx. 10 years Outdoor durability Approx. 3 years Photoluminescent Rigid PVC (PR) Luminance Min. 100/10 mcd/m2 (after 10 and 60 min) DIN 67 510 requires 20/2,8 mcd/m2. Indoor durability Approx. 10 years Outdoor durability Approx. 5 years (can be reduced in strong sunlight) Rigid Polystyrene (R) Extruded high-impact polystyrene Indoor durability Approx. 10 years Outdoor durability None Self Adhesive Vinyl (V) Description Soft calendered PVC film, Cadmium free, gloss finish. Adhesive Permanent high-performance, acrylic water based. Liner Coated Kraft Paper, approx. 140 g/m2 Laminate Approx. 260 g/m2 Indoor durability Approx. 10 years Outdoor durability Approx. 4 years