Film Dictionary
- Acetate films
- Acrylic pretreatment
- AEO certificate
- Antistatic films
- Bio-based films
- Calibrate
- Cellophane films
- Compostability of films
- Corona pretreatment
- DI acetate films
- Digital transfer printing
- DYE inks
- Ink fountain films for Heidelberg presses
- Ink fountain films for König und Bauer presses
- Inkjet
- Liquid toner
- Mirror films
- Ökotex
- PA / Polyamide
- pick and place
- Pigment inks
- PLA / Polylactic acid, Polyactide
- Polycarbonate / PC
- Polyethylene / PE
- Polyethylenterephalat (PET)
- PP / Polypropylene
- PS / Polystyrene
- PU pretreatment
- RFID
- Screen printing
- Solid inks
- Surface tension
- Syntheticpaper
- TCA pretreatment
- Transfer films
- Visible window backsplash
- Window film
Corona pretreatment
Our optimont® polyester films have a non-polar, electrically well-insulating and water-repellent surface that is difficult to print or coat.
During film production, the corona pre-treatment is usually carried out "inline". The film is exposed to a high-voltage electrical discharge by running the film web over a polished steel roller and, in close contact with an electrode, is bombarded with an alternating voltage of approx. 15,000 volts. The corona treatment significantly increases the surface tension due to the dispersive and polar interaction, thus favouring subsequent adhesion properties.
