Tunnel Pasteurizers are used for heat treatment with beer, soft drinks etc. in closed bottles or cans. The containers are loaded at one end of the pasteurizer and passed under sprays of water as they move along the conveyour belt.
The sprays are positioned so that the containers are subjected to increasingly hot water until the pasteurization temperature is reached by the product in the bottle or can.
The containers are then gradually cooled with water until they are discharged from the end of the pasteurizer. A typical process will include most or all of the following steps: