Dryad Technology, Inc.    The Developers of the New Millennium Paper Coating and Sizing Technology

TODAY THE MAJOR ISSUE IS ENERGY CONSUMPTION

Here is an example of a 200,000 test liner machine with a size press.  It has three sizing options: 1) a pond, 2) a film, or 3) a spray.  The graph below illustrates the energy savings potential by showing how much water is added during the sizing to the paper and must be evaporated during one operating day.  This is one of the major savings components that spray sizing will offer to a papermaker:

Note, that energy conservation is not necessarily the only benefit from spraying.  Spray technology allows you to add exactly the desired amount of starch of the sheet surfaces and do starch profiling as needed.  This technology is also less demanding for the paper substrate strength and that can often be translated to increased use of shorter and weaker fibers and even secondary fiber in paper making.  In some cases the reduced evaporation need will offer an opportunity to increase paper production on an existing paper machine.