Air freight for chilled and frozen cargo
Temperature-controlled air transportation is the best way to send delicate, perishable or frozen products. The products that require the maintenance of a specific temperature has a high associated risk because of the amount of critical points that are in the supply chain and threatening the cold chain. Since the loading at the origin, the expected load on the truck – the sun often – the time at the basement – where the temperature can vary from -18 ° C to +20 ° C – to the waiting time in a warehouse, there are numerous external threats to the optimum temperature for preservation of the product.
For all this reasons cargo requires special handling by a specialist in shipping perishable cargo. It is essential to make a plan, calculating not only the flight time but the waiting time for transhipment, the cut-off before every flight, the time required to carry out the order, etc.
Refrigerated Air freight solutions
According to the type of product, the flight time and the transhipments to be established, there are several solutions to maintain the cold chain from origin to destination:
- Isothermal packaging: there are several packaging solutions with insulation included, such as cardboard boxes with polystyrene or aluminum blades. There is several sizes and can be effective in direct flights if used some soda complementary materials.
- Envirotainers: ULD equipped with a motor, batteries and dry ice compartment, which keep the temperature up to 72 hours. It is the ideal solution for very delicate pharmaceuticals and presuppose a price increase of around 50% to 60% of normal air freight.
- AcuTemp: ULD equipped with a compressor and batteries that allow the maintenance of controlled temperature up to 100h. By not taking dry ice (a dangerous goods), you can embark on any type of aircraft, including the regular routes passengers.
Coolants and Refrigerants for air freight
Dry ice is solidified carbon dioxide (CO2) at very low temperature. It can be found in different particle sizes and shapes such as blocks, pellets or snow. Adding dry ice in perishable shipments is a common practice and has been used as a cost effective solution to maintain cold temperatures for a limited time.Nevertheless it is classified as a hazardous material by the International Air Transport Association (IATA) because high level concentrations of CO2 in confined spaces such as airplanes can lead to breathing problems or even suffocation.
Gel Packs are a practical and economical substitute for dry ice. It a pack with a refrigerant gel wich keeps the cargo cool and fresh longer than ice and it has the advantage of being a safe producte without the shipping restrictions of dry ice. It is a superior and reusable material safe to use with foodstuff and pharmaceuticals.