What is Coroplast? The Essential Guide to Corrugated Plastic Sheets

Guide to High-Performance Corrugated Plastic

If you have ever wondered what Coroplast is, you are in the right place. In the North American sign and packaging industries, "Coroplast" has become the synonymous brand name for corrugated plastic sheets—the heavy-duty, versatile hero of outdoor displays.

The Anatomy of Strength

At its core, a Coroplast board is a high-quality, twin-wall plastic sheet. Think of it as the durable, plastic evolution of a cardboard box. It features two flat, parallel surfaces (skins) connected by vertical ribs known as flutes. This unique "I-beam" structure makes Coroplast plastic incredibly lightweight while maintaining impressive structural rigidity.

Why It’s the Gold Standard for Signs

For professionals creating durable outdoor displays, Coroplast is the undisputed choice. Its resilience is unmatched:

• Weatherproof & Waterproof: Unlike cardboard, it won’t soak up water or fall apart.

• Extreme Durability: It is engineered to withstand the freezing winds of a Canadian winter and the scorching heat of a Texas summer.

• Chemical Resistance: It remains stable even when exposed to harsh cleaning agents or industrial environments.

Professional Manufacturing & Customization

As a specialized manufacturer, we produce Coroplast sheets in a variety of thicknesses and colors. Our 4mm white board remains our top seller, serving as the backbone for yard signs and real estate displays nationwide. Whether you call it fluted plastic, hollow board, or corrugated plastic, its versatility for packaging and advertising is truly unparalleled.