Fluted polypropylene, more commonly known by the brand name Coroplast, is a cost-effective, lightweight material. Fluted Polypropylene boards are commonly utilized for its excellent adhesion quality in markets such as printing for the graphics arts field, display, and packaging. Fluted Polypropylene is also the material of choice for today's screen printing industry. It is ideal for indoor and outdoor applications while being tougher than corrugated fiberboard and lighter than extruded plastic sheet. It is waterproof, stain-resistant, and resistant to some chemicals.