Cardboard - Determination of puncture strength

Cardboard puncture strength refers to the ability of cardboard to resist external force damage under certain conditions with a specific test method. Usually, the test is carried out with a standard material testing machine. In the test, a test head of a certain size is applied vertically to the cardboard until the cardboard is penetrated. The force required for the test is the puncture strength of the cardboard. The puncture strength of cardboard is an index to measure the wear resistance, tear resistance and pressure resistance of cardboard, and it is also one of the important parameters to measure the quality of cardboard.

Cardboard puncture strength testing is usually performed using a cardboard puncture Tester. The testing machine evaluates the puncture strength by passing a test head of a specified size and shape through the sample to be tested at a specified speed, and measuring the force applied when the sample penetrates. The puncture strength is usually expressed as the maximum force per unit area, and the unit is Newton/square meter (N/m2) or kilopascal (kPa).

Cardboard puncture strength can be determined by the following steps:

1. Prepare testing equipment: cardboard puncture Tester, sample cutter, sample mold, weighing device.

2. Cut the cardboard sample into a sample of the specified size using a sample cutter and a sample die.

3. Put the sample into the cardboard puncture strength testing machine, and set it according to the equipment manual.

4. Before starting the test, measure the weight of the test head with a weighing device and record it.

5. Press the test button to let the test head pass through the sample at a specified speed until it penetrates.

6. Record the position of the test head at the time of penetration and calculate the force of penetration.

7. Analyze the test results and calculate the average puncture strength of the cardboard samples.

NBCHAO reminds you: when conducting the cardboard puncture strength test, the consistency of the test environment should be maintained to avoid the influence of interference factors on the test results. In addition, care should be taken when testing to avoid injury from the test head or sample cutter.