Blocking is the tendency of coated webs to stick to each other. Face/back (F/B): coated face to the back of the same web — a bad roll becomes a “log” and will not unwind. Face/face (F/F): two coated faces — wrappers stick in a stack unless you put dividers. Do not confuse blocking with coefficient of friction (slip).
What's in this guide
- Two-pound stack (general coatings)
- Lacquers and water-based (higher activation)
- Hot-melt EVA (pressure-sensitive activation)