Patent ID: 8056357

Claim:
A method for obtaining and maintaining a predetermined temperature inside a goods holding space in a transport container transporting temperature sensitive or dependent goods, the transport container forming an essentially closed volume, wherein as a refrigerant agent or material is used dry ice or a first phase change material (first PCM) having a low or extremely low temperature of sublimation/evaporation, said method comprising the steps of providing a receptacle having a bottom part, a top part and side walls, and receiving the dry ice or like first PCM in the receptacle, the receptacle as a whole forming a temperature regulating element inside the transport container, the receptacle having the bottom part and the top part with double layers, defining spaces for a second phase change material (second PCM) having considerably higher phase conversion temperature than that of the first PCM, said phase conversion temperature of the second PCM also being adapted to a desired temperature range inside the transport container, the second PCM at least partially enclosing an inside of the receptacle in which the first PCM is received.