Plastic Industry Terms
There are 412 entries in this glossary.
All
| Term | Definition |
|---|---|
| Corona Discharge |
A method of rendering the surface of inert plastics, such as polyethylene, more receptive to inks, adhesives, or coatings by subjecting their surfaces to an electrical discharge. Typical method is to pass film over a grounded metal cylinder above which a high voltage electrode is spaced to leave a small air gap. The corona discharge oxidizes the film leading to the formation of polar groups. The surface now becomes receptive to the coatings. |