Why does PE heat shrinkable film appear spots

The products made by PE heat shrinkable film manufacturers can be used in many industries. What are the matters that need to be paid attention to during use? Now let’s take a closer look? First of all, the first reason may be ink. The concealing force is not strong, or the leveling property is poor, and the PE heat shrinkable film may also be incompletely dried, insufficient solvent evaporation, too much residual solvent in the adhesive, and some ink layers are dissolved and polished, causing mottle . There is also a mismatch between the ink and the adhesive, which makes the adhesive's function of penetrating the ink not good, showing the appearance of repelling and mottled. In addition, if the surface tension of the ink of the PE heat shrinkable film is low, the adhesion between the ink layer and the aluminized layer and the density between the layers will be uneven, which visually constitutes white or gray mottles. Next: How to delay aging of PE heat shrinkable filmPrevious: Precautions for the use of polymer protective film