Preparation method of optical colorful polyester film using microwave technique
OwnerBo Peng, Wei Wei +1inventors
InventorsBo Peng, Wei Wei, Chao Gao
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Abstract
A process for preparing an optical colored polyester film using microwave technique comprises the following steps: microwave dyeing treatment by passing a polyester film through a disperse dye suspension with a steady water phase in a dye-pool comprising a microwave generator; rinsing with water; rinsing with solvent; finally drying treatment, and then uniform optical colored films with various colors are obtained. The optical colored films are used as optical filters or optical protection films and as glass window films for automobile, and domestic and office windows.
Claims9
A process for preparing an optical colored polyester film using microwave technique comprising the following steps:
- (1) conveying a non-colored polyester film into a disperse dye suspension with a steady water phase and simultaneously dyeing at the heating temperature of 80-85° C. for 10-120 seconds using microwave technique;
- (2) rinsing the colored film with a water solution containing the mass ratio of 0.1-5 percent of surfactant until a thickener on the surface of the film is thoroughly rinsed off;
- (3) re-rinsing the colored film after water rinsing with a solvent which includes ethanol, acetone or ethyl acetate;
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- (4) drying the colored film after solvent rinsing at the temperature of 130-170° C. for 10-120 seconds.
Dependencies are inferred from the claim text.