Q1: What are the primary benefits of a water-based (aqueous) screen coating compared to solvent-based alternatives?
A: The key benefits are low VOC emissions, minimal odor, enhanced workplace safety, and easier cleanup with water. It provides an eco-friendly printing solution while maintaining good adhesion and durability on compatible substrates, supporting sustainable production practices.
Q2: Which substrates are most suitable for this coating, and are there any limitations?
A: It performs best on porous and semi-porous materials such as paper, cardboard, and untreated wood. Adhesion on non-porous surfaces (e.g., plastics, metals) may require pre-treatment or testing. Limitations include longer drying times compared to solvent-based systems and potential sensitivity to high humidity during curing.
Q3: What are the recommended drying and processing conditions for optimal results?
A: Drying typically requires air drying or forced air at moderate temperatures to allow water evaporation without blistering or uneven curing. Screen mesh selection should account for viscosity, and post-print handling should avoid stacking until fully dry to prevent blocking. Testing under production conditions is advised to optimize parameters.