Single, Double and Triple wall boxes are all designed to fit different purposes and for use in different circumstances. Triple wall is the strongest and most heavy duty of the three options, so what is it that makes the triple wall box so strong, and what are triple walled boxes best used for?
The strength of any corrugated box lies within its material and its construction. Standard fibreboard corrugations have two components: the liner board and the medium. The liner board encloses the connected mediums of arched material, all cemented with strong adhesive – the sandwich like construction is where the strength of corrugation lies.
There are 5 types of standard box wall construction: these range from A-flute to F-flute – examples of the formation of A, B and C-flutes can be found below:
A-flute is the thickest gauge of corrugated card, followed by C and then B to F in alphabetical order. C-flute is the most commonly found size due to it being a happy medium between A and B-flutes. As a compromise it offers good strength but without compromising ease of use or storage.
When making multi walled boxes it is common for a combination of different flutes to be used as each category has different characteristics which can help to strengthen a box. A frequently used combination in corrugated boxes is BC, which consists of one B-flute and one C-flute – it’s usually regarded as a strong box-type and can hold very large items safely.