| abstract |
A process for dyeing of UV stabilized polyester film of a thickness about 12 to 250 mum, and the film produced thereby. The process includes the steps of dyeing a UV stabilized polyester film in a bath comprising at least one dye and at least one polyhydric alcohol at a temperature above a glass transition temperature of the polyester film to obtain a dyed film, cleaning the dyed film using a solvent, followed by mechanically scrubbing the cleaned film to remove undissolved particles from the film, and passing the cleaned and scrubbed film using a tenter device through an oven to produce a colored polyester film having controlled shrinkage in machine and transverse directions, with shrinkage of 0.4% to 8% in machine direction and 0 to 10% in transverse direction. |