Quote Originally Posted by bartsimsonii View Post
Maybe a plastic film on the metal or a plastic?

Great Work
backplates is made from DIBOND

and yes this white is plastic film on aluminium layer

dibond is 3rd layer material, piotres has 3mm backplates (0,6mm alu + 1,8mm Poliethylene + 0,6mm alu + plastic film on both sides)