Sandwich panels are composite materials consisting of an insulating layer of rigid core sandwiched between two layers of metal. They are widely used in the construction of refrigerated vans due to their excellent insulation properties, lightweight, and durability. These characteristics make them ideal for maintaining the low temperatures needed for transporting perishable goods such as food, pharmaceuticals, and other temperature-sensitive products.
To create a freezing van, manufacturers typically retrofit a standard van with sandwich panels inside the cargo area. The process involves:
- Insulation: The walls, roof, and floor of the van are lined with sandwich panels. The panels’ core is usually made from polyurethane foam or polystyrene, known for their insulation capabilities.
- Refrigeration Unit: A refrigeration unit is installed in the van. This unit is responsible for cooling the interior to the desired temperature and maintaining it during transport. The size and capacity of the refrigeration unit depend on the van’s size and the specific cooling requirements.
- Sealing and Finishing: To ensure the van is airtight and moisture-resistant, all joints and seams between the sandwich panels are sealed. This step is crucial to prevent the ingress of warm air and moisture, which can compromise the temperature inside.
- Electrical and Control Systems: The refrigeration unit is connected to the van’s electrical system, and controls are installed for the driver or operator to set and monitor the temperature.
Refrigerated vans with sandwich panels are crucial in the cold chain logistics, ensuring that goods are transported in a controlled environment, thereby maintaining their quality and safety.
Freezing Van made by Sandwich Panel
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