Canning Retort Machine

The operating cycle of this type of a retort involves bringing the retort up to a temperature of around 121???C. Steam is then allowed to pass through the vessel so that all air in the retort and between the cans is removed (venting) before the retort is finally brought up to the operating pressure and processing temperature. At the end of the processing time, the steam is turned off, and a mixture of cooling water and air is introduced into the retort to cool the cans. The purpose of the air is to maintain the pressure in the retort, following the condensation of the residual steam after the initial introduction of cooling water. The containers may deform because of the pressure difference between inside and outside of the container if this pressure is not maintained.

Steam and Water spray Overpressure Retort with Thermal Process Programmable Logic Controller (PLC) designed for thermal processing all kind of container such as Aluminum Retortable Pouches, Glass Jars, Plastic or Aluminum containers, etc. With directed steam injection, continuous waterspray from top and sides operation guarantee homogeneous heat distribution in the vessel during both sterilizing and cooling. Besides, temperature and overpressure are independently programmable, PID controlled and then recorded by circular chart recorder. Overpressure can be programmed at all time during the heating and cooling for reduced stress on the container seals. Programmes are stored in the memory of the PLC