Puncture test with a pendulum punching device
The penetration energy is defined as the energy (joules) that is converted when a solid or corrugated board is punctured with a pointed penetrator. The measured value thus describes the greatest possible amount of energy that the cardboard can withstand before the material fails. When testing with a pendulum impact tester, the pendulum strikes in the form of a pyramid perpendicular to the cardboard surface.
Alongside burst strength, this characteristic value is one of the most important quality features with regard to the maximum resistance of packaging materials to impact and damage from pointed objects during transport.
DIN 53142-2 Testing of cardboard - Puncture test - Part 2: Linear feed test