| 摘要 |
A temporary support (3) is applied to the rear of the film (4), initially non-adherent, being e.g. paper. Heating softens the plastic, inducing temporary adhesion. The paper maintains film dimensional stability, during subsequent thermal printing. A pattern is transferred by sublimation from an impregnated printing paper (14). Set heat and pressure are applied, printing the design onto the film. Once the design is printed onto the front of the film, the film and paper are cooled, permitting their separation. An Independent claim is included for the corresponding continuous printing equipment. Preferred features: The temperature promoting adhesion between paper and film is 100-200 degrees C, preferably 170-180 degrees C. Sublimation transfer temperature is 170-230 degrees C. The result is cooled to 20-30 degrees C. The printing paper (14) is pre-impregnated with sublimating colors, with a small content of softening or parting agents, to prevent adhesion between film and printing paper during sublimation printing. A flocked plastic film is prepared for printing, by applying a layer of adhesive to its rear, onto which white fibers are flocked |
