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