Clay coated paper for making paper cups is a specialized material for paper cup production, combining functionality, safety, and cost - effectiveness. Also named glossy coated paper for cups.
1. Material Composition
Base Paper: Usually made from high-quality virgin pulp. Virgin pulp offers strength, like softwood pulp enhancing tensile strength. Clay Coating: Commonly uses kaolin clay due to its fine particles and smooth texture. Applied evenly to one or both sides, with a thickness from a few to tens of micrometers.
2. Physical Properties
Smoothness: The clay coating makes the surface smooth. This is crucial for high - quality printing, ensuring even ink adhesion for sharp graphics.
Strength and Stiffness: The combination of base paper and clay coating gives the necessary strength to support liquid weight and stiffness for easy handling.
Barrier Properties: It has good moisture and grease resistance, keeping the cup dry for hot drinks and preventing seepage from oily substances.
3. Safety and Hygiene
Food-Grade Compliance: Must meet strict food-grade safety standards, being non-toxic and not leaching harmful substances.
Hygienic Manufacturing: Produced in a clean environment with strict quality control to avoid contamination.
