Comment charger les rouleaux de caoutchouc dans un conteneur ?

To load rubber rolls in a container, you must use a forklift with a carpet pole to place rolls either vertically to prevent flat spots or horizontally in a staggered pyramid. Secure the load with heavy-duty ratchet straps, use desiccants for moisture, and ensure weight is evenly distributed to meet maritime safety standards.

Loading rubber rolls is a complex engineering task because of the high density of the material. As an R&D engineer, I often see that while rubber is tough, it is susceptible to "creep" or permanent deformation under its own weight. A standard 20ft container has a weight limit of about 28,000kg, but you will reach this weight limit long before you fill the physical space because rubber is so heavy. This high weight-to-volume ratio means every placement must be calculated. If you stack rolls too high without enough core support, the bottom rolls will turn into ovals, making them impossible to install. I focus on the "static load" limits of the internal PVC or cardboard cores. We test these cores to ensure they can withstand the vertical pressure during a 30-day sea voyage where temperatures in the container can reach 60°C, softening the rubber and increasing the risk of deformation.

The loading strategy you choose will decide if your product arrives ready for use or as a damaged pile of scrap.

Why Does Your Container Loading Strategy Matter for Product Quality?

A proper loading strategy protects rubber rolls from permanent physical deformation and moisture damage while ensuring the container passes strict international safety inspections. Using the right method prevents financial loss from "flat spots" and avoids extra fees from port authorities for unbalanced loads or weight violations.

The stakes in rubber logistics are very high. I have seen many cases where high-quality gym flooring was ruined not by a manufacturing defect, but by poor loading. Rubber has "memory"; if a heavy roll sits on a sharp edge or under too much weight for weeks, it stays deformed. This results in "flat spots" that make the floor uneven after installation. Furthermore, container rejection fees are a real pain point. If a container is "nose-heavy" or "tail-heavy," it can cause the truck to flip during a sharp turn on the way to the port. From an engineering view, we also have to worry about "container rain." When warm air inside the container hits the cold steel walls at night, it turns into water. If this water gets into the rolls, it can cause mold or degrade the bonding agents in recycled rubber.

This process starts long before the truck arrives at the loading dock through careful preparation.

What Equipment and Preparation are Needed Before Loading?

You must verify the container payload limits and inspect the unit for light leaks or sharp nails. Use a forklift with a "carpet pole" attachment rather than standard forks to prevent tearing the rubber. You also need industrial-grade shrink wrap, heavy-duty pallets, and high-strength polyester strapping to secure the rolls.

As someone who improves manufacturing processes, I always say that the forklift is the most dangerous tool for a rubber roll. Standard forks often puncture the outer layers of the roll. I highly recommend using a "carpet pole" or ram attachment. This pole goes through the center core of the roll, distributing the weight evenly and preventing any contact with the finished surface of the rubber. Before we start, I always run a "light test" inside the container. I stand inside with the doors closed; if I see any light, it means water can get in. We also look for protruding nails in the wooden floor of the container. A single nail can score a deep line across a 10-meter roll as it is pushed into place. For 20ft containers, we usually aim for a 26-27 ton limit, while 40ft containers often hit their weight limit before they are even half full of rubber.

Once the equipment is ready, you must decide which configuration fits your specific product type.

Should You Load Rubber Rolls Vertically or Horizontally?

Vertical loading prevents flat spots and is easier to unload but requires very stable strapping to prevent tipping. Horizontal loading is more stable and maximizes space but carries a high risk of bottom-roll deformation if the stack is too heavy or the internal cores are weak.

The "Core-Support" rule is the most important part of my job. If we are using a 4-inch PVC core with a 3mm wall thickness, it can support more weight than a standard cardboard core. Vertical loading is my preferred method for high-density gym rolls because it puts zero pressure on the circular face of the rubber. However, the center of gravity is high. If the ship hits a storm, those rolls can fall like dominos. To solve this, we use a "block and brace" method. If we choose horizontal loading, we use a staggered pyramid pattern. This spreads the weight of the top rolls across two bottom rolls instead of one. I always calculate the "compression set" of the rubber. If the pressure on the bottom roll exceeds 0.5 MPa for more than two weeks, the rubber will not return to its original shape. We use timber dunnage between layers to help manage this pressure.

Choosing the layout is only the start; the physical act of securing the load follows a strict path.

How Do You Secure the Load to Prevent Damage and Shifting?

Start by placing the base layer evenly across the floor, then use timber dunnage or air bags to fill all voids. Apply industrial shrink wrap to prevent "telescoping" and use heavy-duty ratchet straps to tie the rolls to the container’s anchor points. Finally, add desiccant packs to manage moisture.

Telescoping is a common pain point where the inner layers of the roll slide out like a telescope during transit. To stop this, I insist on "cross-wrapping" the ends of the rolls with shrink wrap. When we place the rolls, we must avoid the "nose-heavy" mistake. If all the weight is at the front of the container, it makes the truck difficult to steer. We place the heaviest rolls over the axles of the trailer. I also use "chocking" which involves nailing wooden blocks into the container floor to stop rolls from rolling side-to-side. For moisture, we don’t just use small silica packets; we use 2kg calcium chloride bags hung from the ceiling hooks. These can absorb up to 200% of their weight in water. This is vital because high humidity can cause the rubber to expand slightly, which makes the rolls "grow" in size and jam against the container walls.

The last step is ensuring you have the right documentation before the doors are locked.

Conclusion

A safe load requires the right equipment, weight balance, and moisture control.