Easy to master! That's all you need for corrugated box inspection—Part 2!

Do you ever have this kind of question? ？

What my product should do Which tests ？

These All tests are necessary. Huh?

Do Finished What's the use? What about that?

Dr. Bao clarifies and answers questions for everyone.

Today's product selection: Corrugated cardboard box

The test items required include: edge compression strength, bursting strength, puncture resistance, adhesion strength, compressive strength, moisture-proof performance, moisture content, and delamination weight.

Compressive Strength Test

Compressive strength refers to the maximum pressure a corrugated cardboard box can withstand when subjected to uniform, steady pressure applied evenly to two opposing sides while the box remains standing in its three-dimensional form.

(Xiaomin Talks Testing: This test measures the maximum pressure a corrugated cardboard box can withstand, helping to assess whether the box is strong enough to support stacking weights and protect its contents. It ensures that packaging won’t fail—preventing issues like product deformation or damage during handling, transportation, stacking, storage, and other stages—while also serving as a comprehensive indicator of the box’s protective performance.)

Moisture Resistance Testing

Moisture resistance focuses on how well the surface of paper or cardboard absorbs water.

(Xiaomin on Testing: This test measures the paper box's ability to block moisture under external environmental conditions. It can be verified using the water vapor transmission rate—lower rates indicate superior moisture-proof performance of the corrugated cardboard material. Factors such as the production environment, storage conditions, usage scenarios, weather, and climate can all affect the paper box. To ensure the box maintains its compressive strength, it’s crucial to minimize the impact of external elements on the packaging.)

Moisture Content Test

Moisture content testing refers to the amount of water present in raw paper or cardboard, expressed as a percentage.

(Xiaomin Talks Testing: This test measures the moisture content of the cardboard itself. If the moisture level is too high, the paper becomes soft and loses its stiffness, leading to poor creasing and bonding quality. Conversely, if the moisture content is too low, the paper becomes brittle, making it prone to cracking during creasing—and significantly reducing its fold resistance as well. That’s why it’s crucial to keep the moisture level within a reasonable range.)

Hierarchical Quantitative Testing

Layered quantification refers to determining the weight of each layer of cardboard per unit area, expressed in g/m².

(Xiaomin on Testing: The corrugated cardboard production line operates continuously, using roll paper as its base material. Since roll paper is sold based on quality, this means that for a given quality level, the lower the basis weight of the paper or cardboard, the larger the usable area—and consequently, the more products you can produce. In actual manufacturing, maintaining strength while minimizing basis weight can significantly help reduce costs.)