To maximize the space utilization and load as much E-TPU granule as possible in a 40" container, you can consider the following packing method:

Use bulk bags (also known as FIBCs or super sacks): These large, flexible bags are commonly used for storing and transporting granular materials. Opt for high-capacity bulk bags that can hold a significant amount of E-TPU granule.

Optimize bag size: Choose the appropriate size of bulk bags that can efficiently fit inside the container. Larger bags with higher capacities will maximize the space utilization.

Stacking arrangement: Ensure efficient stacking of the bulk bags. Stack them in a way that optimizes the use of vertical space while maintaining stability. Place the bags in neat, compact rows and stack them as high as possible without compromising safety.

Eliminate empty spaces: Fill any empty spaces or gaps between the bags with smaller packages or dunnage materials, such as air pillows or foam blocks. This will prevent movement and shifting of the granules during transportation.

Secure the load: Make sure to secure the stack of bags properly using straps or other tie-down methods to prevent them from shifting or falling during transit.

Utilize container space: Load the stacked bags into the container in a way that evenly distributes the weight and optimizes the available space. Consider utilizing both the floor space and vertical space within the container.

Plus, please note store it properly: After packing, store the E-TPU granules in a cool, dry, and well-ventilated area. Avoid exposure to direct sunlight, extreme temperatures, or high humidity, as these can affect the quality of the granules.