Radio Frequency Co., Inc.

The Complementary Effect of Macrowave™ Post-Baking Drying Boosts Productivity & Profits Conventional Biscuit & Cracker Baking Process Conventional ovens require a prolonged residence time for baked products to reach final target interior dryness. As a result, productivity is limited. A Macrowave™ Post-Baking Dryer will preferentially heat and dry the moist interior of the product, eliminating the interior drying requirement from the oven, and enable greater productivity and profitability from the existing line.

• Series8000 Series High Frequency Macrowave™ Dryer for Ceramic Extrusions

8000 Series High Frequency Macrowave™ Dryer for Ceramic Extrusions The Macrowave™ 8000 Series Drying Systems Uniformly Dry Ceramic Ware in Minutes without Discoloration or Surface Cracking Benefits: PRODUCTS ARE DRIED QUICKLY: The RF heating method takes minutes, not hours, to thoroughly dry extruded materials. REDUCES SURFACE CRACKING: Surface cracks caused by the stresses of uneven product shrinkage during the drying process are eliminated. PRECISE MOISTURE CONTROL: Selectively heats where the moisture content is the highest producing a uniformly dry product throughout. SMALL FOOTPRINT: Each 150 kW module removes 300 lbs. (136kg) of water per hour in a line length of only 24 feet (7.3 meters). ENERGY SAVINGS: Macrowave Tm RF drying saves energy over conventional drying systems. Features: The low operating voltage of the 40 MHz Macrowave system increases the variety of products which can be dried by this method. A counter-flow stream of moist air retards premature surface drying of product. Self-regulating power dries one part or a continuous stream of parts without operator intervention. Product size changeovers require only a few minutes to select new control panel settings. PLC controls suitable for local and remote operation include a fault condition indicator system. Meets OSHA and FCC standards.

HIGH FREQUENCY CONVEYORIZED SYSTEMS FOR BULK OR BAGGED PRODUCT FROM 1, 000 lbs.hr to 50, 000 lbs.hr. MACROWAVE™ PASTEURIZATION SYSTEMS ASSURE UNIFORM, VOLUMETRIC HEATING WHETHER CONVEYED ON A TROUGHED CONVEYOR BELT OR PROCESSED IN BAGS. HOW RF HEATING WORKS In a Radio Frequency heating system the RF generator creates an alternating electric field between two electrodes. The material to be heated is conveyed between the electrodes, where an alternating energy field causes polar molecules in the material to continuously reorient them to face opposite electrodes much like the way bar magnets move to face opposite poles in an alternating magnetic field. Friction resulting from this molecular movement causes the material to rapidly heat throughout its entire mass. The illustration below depicts a radio frequency drying system with material between the electrodes. Polar molecules within the material are represented by the spheres with plus (+) and minus (-) signs connected by bars.

Introduction Radio Frequency Heating and Drying Technology has been commercially utilized in the food industry since the 1960’s.The above 30 kW Macrowave™ Pasteurization System for granular food products was designed and patented by Radio Frequency Co.'s founder, Mr. Joshua G.D. Manwaring in 1966. His design featured a rotary product feeding tube to prevent agglomeration and a closed loop temperature control system, both considered cutting-edge technology at that time. RF Post Baking Dryers have also been widely commercialized in the USA and abroad, where this technology has increased the traditional conveyorized oven efficiency and throughput capacity by as much as 50%. RF heating and drying improves shelf-life, eliminates checking and over-coloring, and minimizes water activity in both human and pet foods, enhancing quality and food safety. With major food recalls beginning in 2009, and the resultant implementation of the Food Safety Modernization Act (FSMA), a “New Wave” of interest in pasteurization and disinfestation applications for this mature technology has developed. Both human and pet food manufacturers are evaluating the safety of their supply chain and manufacturing processes, and in many instances where RF is a great fit, the implementation and commercialization continues. RF Pasteurization is particularly effective in the treatment of dry ingredients where pathogens can be dormant and more

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• Series9000 Series Conveyorized High Frequency Ceramics Drying Systems

9000 Series Conveyorized High Frequency Ceramics Drying Systems Macrowave™ Drying Systems assure Moisture Uniformity, Offer Increased Production Output and Improved Product Quality PRECISE MOISTURE CONTROL: Selectively heats products where the moisture content is the highest. The product output will be uniform throughout, regardless of the non-uniformity going in. INCREASES PRODUCTION THROUGHPUT: Product throughput on many applications can be increased 50% to 100%. PRODUCT QUALITY: Surface Cracking and warpage caused by the stresses of uneven product shrinkage are eliminated because of the moisture uniformity achieved. Precise temperature control avoids product discoloration. OTHER BENEFITS: Energy savings and floor space savings. Advanced Features of the 9000 Series Macrowave™ Dryers: The low operating voltage of the 40 MHz Macrowave™ system increases the variety of products which can be dried by this method. The latest design of PLC controls provides complete diagnostics and centralized control of all dryer functions. The Macrowave™ heat reclamation system uses waste heat from the RF power generator to scavenge moisture and increase drying efficiency. Macrowave™ dryers conform to OSHA and FCC standards and carry the UL-approved label.