Topic: Plasma systems, plastic film, pretreatment and activation of films, printing on plastic films
Film systems: Durable activation of plastic films
Increasing surface tension
It is possible to coat plastic films only when they have been durably activated. In order to print onto the plastic it is necessary to increase the surface tension of the material because plastic has a low inherent surface tension that is not amenable to accepting printing inks. After pre-treatment with Plasmatreat’s Openair® plasma the films can accept printing inks in optimum fashion. With other commonly used processes, such as corona treatment or flame treatment, the surface tension falls again after a relatively short time limiting the usefulness of such treatments. Plasmatreat’s Openair plasma technology eliminates this problem.
The use of film systems having flat slit-shaped jets makes it possible to exploit the effectiveness of Plasmatreat’s atmospheric-pressure plasma across any desired width. In this way high-grade and durable pre-treatment of the entire surface of the film is guaranteed. An additional positive side effect in the pre-treatment of plastic with Plasmatreat’s Openair® plasma is a distinct antistatic effect.
| Advantages and characteristics of activation of plastic films by Plasmatreat’s Openair® plasma |
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Overview of Plasmatreat film systems
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Plasma technology for efficient cleaning of aluminum foil
Plasma systems for coil coating
