The photopolymer for the production of stamps liquid rubber are curable in ultraviolet light. The uv light should be in the range of 315 to 380nm to produce a flexible rubber with a hardness of 55...
Founded in 1968 in Tubarão the first factory in the region of stamps with the name Carimbo Nunes Ind. Com. founded by José Santos Nunes (in memoriam). Over the decades it has become the largest factory of stamps of the state and one of the largest in southern Brazil.
