Definition
A pre-coat applied to improve ink or adhesive anchorage on difficult-to-bond substrates.
Applications
- Printing on PE/PP
- Metallized films
- Low-energy substrates prior to lamination
Benefits
- Improves ink adhesion
- Reduces delamination risk
- Expands printable substrate options
Industry Examples
- Medical: primer to improve legibility and durability of printed instructions.
- Industrial: primer under heavy solids to reduce abrasion and flaking.
- Electronics: improves adhesion of conductive inks applied to dissipative film surfaces.
FAQ
Q: When is primer preferred over higher corona?
A: When treatment alone can’t achieve consistent anchorage.
Q: Does primer affect seals?
A: It can if misapplied—keep primers out of seal areas unless designed for it.