The use of PVC shrink film in all walks of life is very high, the most commonly used such as: beverages, food seasonings, batteries, cosmetics, etc., it has a bright, no obvious wrinkles and bursting characteristics. However, the PVC shrink film often appears to be discolored when it is used. What is going on? Next, let's take a look at each one.
First, the cause of the color loss
1. The material of the PVC film used is not suitable for printing;
2. The printing process or pigment is not suitable.
Second, the solution to the problem of color loss
1. Adopt professional "pvc heat shrinkable printing film";
2. Select solvent-based acrylic printing, add compatible printing ink, and add a part of a more polar chemical solvent like DMF to make the PVC film slightly swell and swell, which will make the printing paste adhere. It is stronger.