Purchasing Coroplast Guide Coroplast is a lightweight, weather-resistant polypropylene copolymer sheet often referred to as "plastic cardboard". It is chemically inert, FDA-approved for food contact, and fully recyclable under Resin Code 5 . Where to Buy
: For individual sheets or small DIY projects, Amazon and local home improvement stores are best.
: If you need a large volume for signage or industrial packaging, buying directly from manufacturers allows for price negotiation and customization.