Corrugated board is available in many different grades and profiles. The grades vary from a completely recycled material to a virgin Kraft material and are available in a wide range of grammages.
Kraft/Test Paper & Fluting
Kraft paper, recycled paper fluting and test recycled inner liners are the most common material used to make a corrugated box. Kraft paper lines the outside. Our kraft paper uses higher levels of virgin sustainably sourced paper (non-recycled), giving a higher quality of finish, strength and a better printing surface — ideal for custom cardboard boxes.
White paper can be used as the external liner paper of your corrugated box and is a cost-effective way to give a higher end feel. White paper gives a nicer finish and is a superior substrate — leading to better print quality.
Standard paper thickness starts at 125gsm (gram per square meter) and moves up through 150, 200 and on up to 300 gsm. Extreme heavy duty corrugated cases and boxes using up to 1000gsm liners can — where required — be supplied. The strength of the box is affected not only by the paper thickness but also by the grade of fluting you have. Fluting is explained more fully below.
Corrugated Box Fluting
The most common, standard flute profiles that we work with are classified by their height as E, B, C, BC and EB. There are also numerous much thinner micro flutings available.