- Raw Material app Paper For Coffee Cup Waterproof Single Side Pe Coated Paper In Sheet 1. Single/Double side PE coated paper for paper cup , Flexo or offset Print. 2. Quality Control: Paper Gram:±5%, PE Gram:±2g, Thickness:±5%, Moisture:6%-8%, Brightness:>78. 3. Wood pulp base paper for paper cup , Food Grade, eco-friendly.