Efficient radio-frequency drying for nonwoven battings and foams

摘要

A radio-frequency (RF) dryer for manufacturers of nonwoven battings and hydrophilic foams has been launched by Radio Frequency Co of Millis, Massachusetts, USA. Producers of nonwoven battings and foams are faced with unique drying challenges owing to the insulative characteristics of these products. Using conventional drying methods, long residence times are required to allow the heat to penetrate into the inner portion of these products and remove moisture. Radio Frequency Co says that RF drying systems can heat these products throughout their entire thickness simultaneously and remove the moisture by converting it to gas in situ. This greatly reduces drying times and significantly increases the energy efficiency of the drying process.