Packaging film manufacturers summarize the causes of spots on packaging film

Packaging film has puncture resistance and high performance, so it is widely used. However, many customers report that the surface of the packaging film will appear spots during the use of the packaging film. Let's follow the packaging film manufacturers to understand why there are spots. The reason. If the viscosity of the adhesive of the packaging film is too large, the fluidity will be poor, which will easily cause uneven gluing, affect the reflective performance of the aluminum coating surface, and cause spots. The surface tension of the packaging film ink is low, resulting in poor coating effect of the adhesive and uneven gluing. Therefore, the adhesion between the ink layer and the aluminized layer and the tightness between the layers will vary, resulting in aluminized The reflective effect of the layer surface is also strong or weak, forming white or gray spots visually. Packaging film manufacturers remind everyone that if the hiding power of the ink is not strong or the leveling is poor, it will cause uneven coverage. Where the covering effect is not good, the color of the aluminized layer will penetrate through the ink. The adhesive concentration is too high, the viscosity is too large, it is easy to reverse the ink to the glue, and the color of the printed layer changes. The above is a brief introduction of packaging film manufacturers, I believe everyone has a certain understanding of the above content. If you have other questions, you can call the staff of our company. You are also welcome to continue to pay attention to our website, and we will continue to send you more exciting content. Author: one on xiaohong: POF shrink film production process large introduction