Roscolene
In 1955 Rosco introduced its Roscolene range of coloured lighting filters, to replace gelatin.
In 1955 Rosco introduced its Roscolene range of coloured lighting filters, to replace gelatin. Gelatin was flamable and so a fire hazard, and the colours tended to fade. The technically superior Roscolene was made of PVC plastic. More recently, polyester and polycarbonate have been adopted as the substrate for lighting filters.