Q1: What is the primary function of an aqueous blister coating in packaging production?
A: Its primary function is to create a uniform, heat-sealable barrier layer on paperboard, enabling a strong and consistent bond with the plastic blister film during thermoforming. This ensures package integrity, prevents leakage or delamination, and provides essential moisture resistance for product protection.

Q2: How does a water-based coating support sustainability compared to solvent-based alternatives?
A: As an aqueous system, it significantly reduces VOC emissions and odor, minimizes environmental impact, and improves workplace safety. It aligns with green packaging initiatives while maintaining high performance in sealing strength, flexibility, and processing efficiency.

Q3: Are there key application or drying considerations to ensure optimal sealing performance?
A: Yes. Even coating coverage and thorough drying (typically with IR or hot-air systems) are critical to prevent sealing defects, blocking, or moisture-related issues. Process parameters—such as coating weight, drying temperature, and line speed—should be optimized for specific substrates and blister film combinations to achieve reliable results.