200 lb Test

200 lb Test

This is a test certification for a corrugated box made with mullen liners. The test determines the bursting strength of a flat specimen of paper, paperboard, film, foil, plywood, corrugated fiberboard, solid fiberboard or other material. Mullen value is determined by the amount of pressure a box can withstand before bursting or being punctured. The weight of the board’s liner constitutes the bulk of the bursting strength.
Mullen values are given as a three-digit number, such as 200 lb, and the higher the value the stronger the board.