Laboratory Test

The basis weight indicates the weight per unit area of a corrugated board. The basis weight of the paper also correlates with the strength of the box. Basis weight of papers, boards and boxes are also tested to further ensure consistent quality.

The caliper test is used to validate the thickness of a corrugated board. The thickness of the board correlates with the compressive strength of box. The thickness of the board is one of the most important performance indicators during production and finished goods....

The Cobb Test is used to determine the water absorptivity of paper and corrugated board. It measures the ability of the test specimen to resist the penetration of water in a specific time. This method is commonly used for boxes with wax coating. Most of the customer...

BCT measures the compressive strength of a regular slotted container (RSC). It indicates the box's ability to withstand compression hazards, and how the box will contain and protect its contents during storage and shipment (palletizing, stacking, storage time, and...

ECT directly related to the compressive strength of a box. ECT is a measure of the edgewise compressive strength of corrugated board. It is measured by compressing a small segment of board (10 X 2.5 cm) on edge between two rigid platens perpendicular to the direction...

Bursting Strength Test (aka Mullen Test) indicates the box's ability to withstand external or internal forces, and how the box will contain and protect its contents during rough handling and shipment. For example, a box with a burst-strength of 175 lb/in2...