Polyethylene Plastic Bag Printing Common Problems

- Feb 02, 2018 -

The color of the bag after the product is rewound is bound, and a single bag can not be seen.

The solution: Residual solvent is the main cause of adhesion, you can slow down the press speed, increase the amount of hot air, adjust the solvent formula to solve. In the ink by adding ethanol, isopropanol drunk, a mixture of xylene solvent, and the appropriate increase in the amount of isopropanol can increase the drying speed of the ink; temperature, the ink will be softening and adhesion, so the general print temperature should not exceed 40 ℃; when winding too much tension or roll diameter is too large, causing the central part of the larger pressure will cause adhesion, therefore, when placing the printed material do not lay flat to vertical as well, after bagging , Lightly bandaged, placed in a vertical carton to reduce the pressure between the film surface.