The main reasons for pressure exerted by cargo on container liners are as follows:
1. Cargo weight: When cargo is loaded into a container, its weight acts directly on the liner. Especially for high-density or heavy bulk cargo, uneven or concentrated weight distribution can cause certain parts of the liner to experience greater pressure.
2. Vibration and bumps during transportation: During transportation, containers may be affected by uneven roads, vehicle braking, turning, and other factors, resulting in vibration and bumps. These external forces cause the cargo to move or undergo relative displacement within the liner, thus creating dynamic pressure on the liner.
3. Friction and impact of cargo: The movement, friction, and mutual impact of cargo within the container also exert pressure on the liner. Especially during loading and unloading, the contact and friction between the cargo and the liner are more frequent and intense.
4. Changes in temperature and humidity: During transportation, changes in temperature and humidity may cause the cargo to expand or contract, thus exerting pressure on the liner. This effect can be particularly pronounced for goods sensitive to temperature and humidity. 5. To cope with these pressures, container liners are typically made of high-strength, abrasion-resistant, and temperature-resistant materials to ensure they can withstand the challenges of transportation. Furthermore, proper design, correct loading methods, and regular maintenance and inspection are also important measures to reduce the pressure exerted on the liner by the cargo. It should be noted that the pressure exerted on the liner may vary depending on the cargo and transportation conditions; therefore, assessments and adjustments must be made based on specific circumstances in practical applications.