Depending on the number of paper layers , there
are several different types of corrugated cardboard: type II, III, V, VII.
• Type II - is composed of a core and paper cover, joined
by lines of adhesive between the corrugation peaks
and the cover;
• Type III - is composed of a
corrugated layer, sandwiched between two flat layers;
• Type V - is composed of two corrugated
layers and three flat layers;
• Type VII - is composed of three corrugated
layers and four flat layers.
About corrugated cardboard boxes