Product has snow point
(1) Caused by: Rubber roll pressure is not enough; Solution: increase the pressure;
(2) Caused by: Adhesive on Laminating film is not completely melted; Solution:
Increasing the coating temperature
Increase the film and heating roller contact area, and the heat melt adhesive film will increase the degree
Reduce coating speed
(3) Caused by: Laminating film of the adhesive surface with dust; Solution: impurities, should be promptly removed.
Products with wrinkles
(1) Caused by: rubber roller too much pressure, resulting in membrane deformation; Solution: appropriately reduced pressure.
(2) Caused by: rubber roller surface damage, not smooth; Solution: replace the rubber roller
(3) Caused by: rubber roller and the pressure imbalance between the heating rollers; Solution: adjusted and have them balance
(4) Caused by: film inconsistent on both sides of the tension, or wavy edges; Solution: replace the thin films.
Defect after cutting curly products
(1) Caused by: film tension is too large, so that stretching deformation of membranes; Solution: membrane tension should be adjusted to the screw.
(2) Caused by: Winding tension, causing a deformation of film and paper at the same time; Solution: institutions should adjust winding tension.
(3) Caused by: Environmental humidity; Solution: humidity controlled workshop should be around 60%.
(4) Caused by: The drying time is short; Solution: To extend the drying time, to be coated products in the winding roller to dry completely cooled, then cut film down. speed, coating temperature increase.
Bond is not strong, film
(1) Caused by: Laminating film over shelf life; Solution: replacement of the laminating film.
(2) Caused by: printing ink containing an excessive amount of silicone oil, paraffin wax additive categories, metal ink, ink too thick, ink wasn’t dry. Solution: extend the print drying time, especially for special attention and when printed coated.
(3) Caused by: laminating pressure, high velocity, low temperature; Solution: increase coated pressure increase, lower coating speed, coating temperature increase.