PVC printing film

The production process of PVC printing film is not complicated. Ordinary production lines generally consist of rolling machines, printing machines, back coating machines, and cutting machines. They mainly produce thin films with a thickness of only 0.3 mm to 0.7 mm through the direct stirring of the rolling machine, the rotation of the rollers, and high-temperature rolling. At the same time, the front of the film is printed with colors by the printing machine, and a layer of back coating is attached to the back of the film by the back coating machine. Don't underestimate this layer of back coating, it is an important factor in the performance of PVC film. The back coating is composed of materials and is an affinity agent. It is precisely because of this layer of back coating that the PVC film can be tightly integrated with the medium density board or other boards, without opening the adhesive for ten or even fifteen years. The problem with ordinary facial mask is that it can not solve the problem of film falling off. Due to the fact that the entire production process is carried out at high temperatures (up to 220 degrees Celsius inside the rolling mill), PVC film has high light resistance and fire resistance.

Membrane pressure adhesive is a two-component adhesive with an activation temperature of around 60 ℃. The storage environment temperature should be between 5 ℃ and 30 ℃, as temperatures below 5 ℃ can cause flocculation. The plastic bucket should not be placed directly on the ground, but on a wooden bracket, especially in winter. The period of film pressing adhesive is 6 months from the date of leaving the factory without unpacking the original packaging.

The ratio of main agent to curing agent in the preparation of film pressure adhesive is 20:1. When mixing the main agent with the curing agent, the main agent should be kept in a stirring state, and the curing agent should be slowly added and stirred for at least 3 minutes. The amount of glue prepared each time should be used up within 4 hours. After mixing the glue, the glue bucket should be tightly covered.