Effective packaging should prioritise optimal goods protection while minimising the use of plastic for environmental reasons. Thin coatings that maintain functionality are increasingly sought after.
Barrier Coating
In barrier applications, the platy structured, hydrophobic talc improves the barrier coating’s sealing effect by blocking water vapour transmission. The coating is oxygen, aroma and oil resistant – even liquid resistance is possible. With the use of talc, the product can be made printable, compostable and recyclable. Processing efficiency is increased due to improved runnability, e.g. non-blocking reels. For food-packaging board and paper, the talc may amount to a significant share of the coating dispersion. As regards cost efficiency, this means a lower demand for binder in the formulation.
