Why do you need to corona before printing ink bags

Film surface corona treatment machine, commonly known in the packaging industry as a corona machine, electronic impact machine, EDM machine. Academically called dielectric barrier discharge.

Scope of application: processing a variety of homogeneous film materials. Such as: plastic film, metal sheet, metal film, vacuum aluminum coating, etc.;

Main applications: printing, blown film, compounding, coating, corona treatment of metal film and modification, grafting and polymerization of homogeneous polymer film materials.

The use of water-based ink film without corona treatment can easily cause the printed ink to peel off.

After treatment with a corona machine, there will be fine holes in the film to allow the printing ink to adhere.