 As each sheet is individually dried there is no need for spray powder.However, as these machines require specialty inks which are much more expensive than conventional inks, and the UV lamps use a significant amount of energy, the vast majority of new sheet-fed presses sold in 2007 still used anti-set-off spray powder.In addition to its use in the printing and packaging industry, spray powder is also used in the manufacture of float glass to enable the large sheets to slide easily over each other.