Coroplast® polypropylene twinwall fluted sheet is ideal for the screen printing industry and is suitable for both outdoor and indoor applications. Tougher than corrugated fiberboard, Coroplast® sheets are waterproof and stain-resistant, featuring a double treatment of 'Corona Discharge' on both sides to enhance ink and adhesive adhesion. These sheets are widely used in graphic arts, packaging, agriculture, automotive, and industrial applications.