THERMAPLATE pillow plates surfaces are a fully welded and inflated type heat exchangers that are manufactured by stacking two flat sheets of material and fuse welding them together with a strategically positioned welding pattern.

A typical welding THERMAPLATE pattern comprises of an outer seam weld defining the total pressure boundary of the plate and then an interior circle weld pattern specifically configured for the service type and performance requirements for a given application.

Once the welding is complete, the THERMAPLATE pillow plate will then be expanded by pressurizing the space between the two sheets. As pressure is increased, the gap between the unsupported portions of the plates will increase, creating the identifying “pillow” shaping of the plate.