Mullen Burst Test
This is historically the industry standard which is related to the rough handling durability of corrugated material. The Burst Test is a measure of the force required to rupture or puncture the face of corrugated board. This force is indirectly related to the box’s ability to withstand external or internal forces and thus to contain and protect a product during shipment. This is reported in pounds.
Edge Crush Test
This is a laboratory test method used to measure the cross-section crushing of corrugated cardboard. This offers the necessary information to determine the ability of a sheet of corrugated to resist crushing forces. It is measured by compressing a small segment of board on edge between to plates perpendicular to the direction of the flutes until a peak load is established. It is measured in pounds per lineal inch of load bearing edge but reported as an ECT value.
Box Maker’s Certificate
The Box Maker’s Certificate (BMC) is a circular stamp that describes the specifications of the box. Usually located on an outside bottom flap, this symbol identifies the manufacturer and the compliance with stated specifics. This stamp identifies the material and certifies the results of either the Edge Crush Test or the Mullen Burst Test.
Information provided on a Box Maker’s Certificate:
- Box Manufacturer
- Board Construction
- Minimum Combined Weight Facings
- Size Limit
- Gross Weight Limit
- City & State
The Box Maker’s Certificate indicates the quality and capability of the box but may not be the final decision when picking the right box for your needs. Contact us today on how we can help.