Processing and Validation of Whey-Protein-Coated Films and Laminates at Semi-Industrial Scale as Novel Recyclable Food Packaging Materials with Excellent Barrier Properties

Table 1

Contact angle of water droplet onto used substrates before and after corona treatment and after whey-based coating application.

	Corona-treated PET	Whey coated PET
Contact angle initially (°)	65±2	57±2
Contact angle after 1 minute (°)	65±2	23±10