Corrugated plastic, also known by the brand name Coroplast®, is an extremely versatile, extruded twin-wall plastic sheet. It is durable and can be cut to create collapsible signage. Corrugated Plastic is an excellent substitute for poster board or card stock for interior applications. Its surface is not affected by most oils, solvents or water, and cleans easily.

Corrugated plastic is aligned with flutes that generally run horizontally across the width of the sign. There is a slight detection of lines when looking at the material.

By cutting through the first corrugation only, you can create A-frame signs or table tent signs. The cut will also allow the sign to be folded and carried in a briefcase or suitcase.