Several Common Quality Problems of Post-laminated Film (2)

Second, there is blistering

1, printing ink is dry. Should be hot pressed again and then glue; delay filming time, make it completely dry.

2, the printing ink layer is too thick. The amount of adhesive applied should be increased to increase the pressure and the composite temperature.

3, drying temperature is too high, the adhesive surface crust. Drying temperature should be reduced.

4, the surface temperature of the composite roller is too high. The composite roll temperature should be reduced.

5, the film has wrinkles or relaxation phenomenon, uneven film or curling. Replace the film and adjust the tension.

6, dust and impurities on the surface of the film. Should be promptly removed.

7, uneven adhesive coating, the amount of less. Should increase the amount of coating and uniformity.

8, the binder concentration is too high, viscosity, uneven coating. Apply thinner to reduce the binder concentration.

Third, film wrinkling

1. The film transfer roller is not balanced. Should adjust the delivery stick.

2. Inconsistent or undulating edges of the film at both ends. Replace qualified film.

3, the glue layer is too thick, the solvent evaporation is not thorough, affecting the viscosity, squeezed by the pressure roller, the paper and the film slide. The amount of glue should be adjusted to increase the temperature of the drying tunnel.

4, the electric roller and the rubber roller are not balanced at both ends, the pressure is inconsistent, and the line speed is not equal.