Do you know? The cardboard industry makes more than 30 percent of the entire packaging industry. Corrugated boxes are quite well-known in the industry along with the standard slotted containers. These two are the most popular types of boxes used for storage and shipping. Corrugated containers are affordable sturdy, long-lasting, and environmentally friendly. However there are many different types of boxes that are alike. This means that they are different in the area of the strength of their compressive force, their thickness as well as chemical resistance and other elements. One of the major reasons why business look for the best tensile strength testing machine as they do not want to tae any risks with their idea.
According to the tests from the packaging testing instruments a company considers before the right corrugated box to fulfill your packaging requirements. The strength and strength of cardboard directly influence the weight that the box is able to carry. A box that is not strong enough could cause a puncture or collapse. However the box that is too big means that you have to pay more for materials and contribute to environmental waste.
Now that you have an idea about the importance of testing of boxes let us have a look at the different testing methods.
Strength of Bursting Test
It tests box strength under pressure to figure out the how much weight a box will carry rough handling. You may have heard of it because the test is called the Mullen Test or Bursting Strength Test tests the strength of the the corrugated boards when they are it is subjected to pressure or force. In this test the diaphragm of a rubber is employed to apply pressure on wall of corrugated boxes until it explodes. The diaphragm gets expanded by hydraulics. As the diaphragm expands, corrugated board explodes under pressure.
It measure the strength of the bursting by Kilograms for each square centimetre. The Bursting factor is described by a number of times strength of the bursting divided by the weight on the surface.
Edge Crush Test
It is used to test material quality, stacking strength, pallet shipping endurance. It is a well-known ways to measure the strength of corrugated boxes is to use the Edge Crush Test or ECT.
Each side of a corrugated container is composed of sheets with at least three layers. In general, a thin piece with ridges and grooves is sandwiched between two sheets. These ridges and grooves often referred to as flutes, offer anisotropic strength to the box. The boxes are able to take on more forces from one direction as pressed by tensile strength testing machine. Tests for edge crush or right test or flat crush test can help identify this.
The Edge Crush test, force is applied to the opposite end of the box parallel to the ridges until the box is crushed. For the Ring Crush test, a Ring cut out of the container is utilized to check the same. When performing the flat crush test an excessive amount of force is applied to one side. Edge Crush test results Edge Crush test are measured in pounds per linear inch of load-bearing edge , however is represented in ECT.
Water Resistance
It is used to evaluate the effect of climate conditions on water permeability, moisture, and absorption. While the fiberboard itself can absorb and store moisture, testing the resistance to water of sealing or gluing is equally important. For specific applications it is recommended to use FEFCO 9 is the FEFCO 9 standards are utilized to measure the water resistance of the glue used on the corrugated cardboard box. In this kind of experiment, the corrugated material is submerged in water, exposed to the glue lines in order to test the strength of the bond as well as water absorption.
Box Compression Test
It is used to gauge the strength of stacking of pallet loads. A box compression test also referred to as the container compression test is a method to determine the amount of load a box can bear over it before it becomes deformed and the extent to which it is deformed. It provides us with an idea of the number of boxes that can be put together without causing harm to what's inside the bottom box. This test is essential to test the strength of boxes using the packaging testing instruments, and is demanded by many companies that transport boxes in large quantities.
Endnotes
These are the top corrugated box testing methods to ensure packaging quality. These are some of the most important things that every manufacturer or businesses with products has an idea about.
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