Coroplast is North America's market share leader and largest manufacturer of corrugated plastic sheet for signs and re-usable packaging.

Industries served

The Coroplast name is known throughout the Sign Industry for a Consistent High Quality Printable Surface. This reputation allows Coroplast the recognition of being the material supplied through the largest number of Plastics and Sign Supply Distributors in North America. As a Packaging Material, Coroplast is unmatched in durability, design versatility and reusability. No product offers the benefits of Coroplast for constructing custom plastic containers and packaging. Where parts protection is essential and cost reduction imperative, the durability Coroplast offers is unequaled. When examining the cost of procuring and the consequent disposal associated with expendable packaging, Coroplast is the ideal solution for the environment and the cost conscious manager.


Coroplast's main product is corrugated plastic sheet. This plastic sheet is the building material that will serve so many functions, only your imagination is the limit. Coroplast® comes in a variety of styles, all based upon the Coroplast high quality corrugated plastic sheet. Our standard sheet has been treated to allow for excellent adhesion quality to aid in printing for the graphics arts fields. It is also extremely durable because it is waterproof and resistant to stains and most chemicals. The name Coroplast?? applies to a wide range of extruded twinwall plastic sheet products produced from a high impact polypropylene copolymer. Coroplast uses a copolymer resin in order to increase impact and low temperature performance. Chemically, the sheet is inert, with a NIL pH factor. At regular temperatures most oils, solvents and water have no effect, allowing it to perform under adverse weather conditions or as a product component exposed to harsh chemicals.


Coroplast Printing Guide


Coroplast Smooth

Laird Plastics introduces Coroplast Smooth™, a polypropylene copolymer co-extruded twin-wall fluted sheet. Coroplast Smooth™ is corona treated. Coroplast Smooth™ is ideal for digital flatbed printers for high quality graphics. It is water and stain resistant.


Coroplast White Cap


Coroplast Graphic Boards


Coro-Paque Smooth


Coroplast™ Corrugated Plastic Sheets

Coroplast™ Corrugated Plastic Panels

For the graphics arts fields Coroplast makes the industry leading corrugated plastic sheet, COROPLAST™. It is tougher than corrugated fiberboard and lighter than extruded plastic sheet, making it ideal for indoor and outdoor applications.