Stacking Strength

Stacking Strength refers to the maximum pressure that a package or cargo can withstand when stacked during storage and transportation, usually expressed in kilograms or newtons. It reflects the ability of packaging to resist deformation or collapse under long-term stacking and is a key indicator in export transport packaging design. Application scenarios include: multi-layer stacking in sea containers for export goods, warehouse rack stacking, pallet stacking, etc. Precautions: Stacking strength is affected by temperature and humidity, stacking duration, and creep of packaging materials; the actual safety factor must consider transport vibration and dynamic loads; different countries or customers may require specific test standards (e.g., ASTM D642, ISO 12048). Difference from 'compressive strength': compressive strength is the short-term static pressure limit, while stacking strength emphasizes continuous load-bearing capacity under long-term stacking. Difference from 'stacking height': stacking height is a spatial dimension, while stacking strength is a mechanical property. Foreign trade contracts should specify stacking strength requirements to avoid cargo damage claims.