Process cooling for plastic industry

The larger plastics processing plants generally have a centralized process water cooling or chilling system. Pipes circulate the cooling water through the ...Inside the mold, the molten plastic is cooled with either cooling tower or chilled water. This process cooling water is fed through many small channels within the mold. As the cooling water travels through the mold, it removes heat from the plastic, hardening it.In its most simplistic form, process cooling can be defined as the removal of unwanted heat from a process. Removal of the unwanted heat is often necessary to ensure the process continues in a safe, efficient and reliable manneCooling is removal of heat, usually resulting in a lower temperature and/or phase change. Temperature lowering achieved by any other means may also be called cooling. The transfer of thermal energy may occur via thermal radiation, heat conduction or convection.The extrusion process has a water bath or spray system in which the hot plastic being extruded is immediately immersed. The bath or spray is connected to a chilled water system which creates the necessary heat transfer to solidify the plastic.In process cooling, the temperature and flow of the liquid will depend on the need of that particular process in removing heat from the process. The temperature of the fluid can range from -20°F or -29°C. This will have to be determined during the design of the cooling processes in tandem with the equipment.