Did you know? Our industry plants way more trees than we use Did you know? Corrugami is the art or technique of using corrugated cardboard to make variety of decorative and creative forms. Ideal for students of all ages. Did you know? Most corrugated boxes manufactured in Canada are made of 100% recycled content. Did you know? Edge Crush Test (ECT) is a measure of the edgewise compressive strength of corrugated cardboard and is quoted in lbs per lineal inch of load, for example 32 ECT. Did you know? Corrugated boxes are one of the most widely recycled materials in the world. Under the Blue Box program recovery the recovery rate is 98%. Did you know? The original patent for corrugated cardboard was issued in 1871 in the USA for an unlined fluted paperboard used primarily to pack around glass bottles.