Why protective film corona treatment to do

Why protective film do corona treatment? Corona treatment in order to change the surface of the protective film is the purpose of energy, make it easy to printing ink, coating materials and adhesive bonding.

 

For example in the production of PE film will happen after the change of structure state, in a few days, is a variation of the amorphous polymer into a crystalline form, which affects the effect of the corona treatment. And after corona treatment, plastic surface crosslinking structure than its inner crosslinking structure decreases, so the surface functional groups have higher mobility. So, in the store, a corona treatment effect of recession, a lot of plastic additives by internal migration to the surface, also can make the surface, the influencing factors of adhesion, this negative effect cant completely suppressed.

Through the above explain why you should know the protective film do corona treatment, if you have any other questions, welcome to inquire.