Stalam RF Defrosters and Dryers

Stalam is an Italian manufacturer of radio frequency equipment based in Nove since 1978: COLDWAVE+ defrosters, MEATFLOW+ heaters, SANIFLUID+ and EGGPURE+ pasteurisers, SANICROP+, WAVEDRY+ and yarn dryers.

COLDWAVE+ meat defrosters

COLDWAVE+ defrosts meat in line: the product travels on a conveyor between the upper and lower electrodes of the RF unit. Cuts and blocks from a few kg to 30 kg and up to 23 cm high run packaged or naked. COLDWAVE+ 2.0 adds a renewed structure and easier cleaning.

Blocks up to 30 kg
Block height up to 23 cm
Multi-position electrode
Packaged or naked

Fish and seafood defrosters

COLDWAVE+ defrosts whole fish, fillets, steaks, shrimps, squid and surimi as IQF products or blocks. Typical figures from Stalam: starting temperatures of -20°C to -18°C, 10 to 35 minutes, final temperatures of -6°C to -2°C. Blocks up to 30 kg run packaged or naked.

Start -20°C to -18°C
10 to 35 minutes
Final -6°C to -2°C
IQF or blocks

Defrosting vegetables, butter and dough

The same COLDWAVE+ units defrost vegetables, fruit, purees, butter, dough and cheese. Stalam reports 20 kg blocks of carrots defrosted in 15 minutes, 25 kg butter blocks reaching +4°C in 40 minutes, IQF strawberries in 19 minutes and 330 g dough pieces in 10 minutes.

Carrots 20 kg: 15 minutes
Butter 25 kg: 40 minutes
IQF strawberries: 19 minutes
Dough 330 g: 10 minutes

MEATFLOW+ tube-type RF heater

MEATFLOW+ heats minced meat, meat emulsions, meat slurries and soups in a tube, even with chunks or dice, quickly and uniformly. The compact unit fits into automated lines and is entirely powered by electricity. Uses include sausages, hotdogs, nuggets, plant based meat, sauces and pet food.

Minced meat and emulsions
Soups with chunks
Alternative proteins
Pet and animal food

SANIFLUID+ and EGGPURE+ liquid pasteurisers

SANIFLUID+ runs continuous RF pasteurisation and sterilisation of liquids in the tube, even with suspended particulates. EGGPURE+ pasteurises whole egg, yolk and white at low temperature. Heating is volumetric and does not rely on the thermal conductivity of the product.

Liquids in the tube
Suspended particulates
Liquid egg EGGPURE+
Pasteurisation, sterilisation

SANICROP+ and SANILEAF+ sanitisation

The patented SANICROP+ treats nuts, cereals, grains, pulses and seeds without fumigants, while SANILEAF+ treats spices, medicinal and aromatic herbs. Disinfestation heats the product to 55-65°C, sanitisation to 80-100°C. About 25 kWh disinfest roughly one ton of product.

Disinfestation 55-65°C
Sanitisation 80-100°C
About 25 kWh per ton
Spices and herbs SANILEAF+

RF equipment for industrial bakeries

For industrial bakeries Stalam builds the WAVEDRY+ post-baking dryer, the WAVEBAKE+ oven for white-crust bread and the WAVESAN+ pasteuriser. Stalam has applied RF post-baking drying to bakery products since the late eighties. These units complement or replace conventional ovens.

Post-baking dryer WAVEDRY+
White-crust oven WAVEBAKE+
Pasteuriser WAVESAN+
Since the late 1980s

RF dryers for yarn and textiles

RF, RFA, RF ECO+, TCRF, RF/C and RFA/HP dryers handle yarn packages and tops in bobbins or bumps. TCRF combines RF with forced air circulation, RF/C dries yarn package columns continuously, and RF ECO+ suits medium and large dye-houses. Residual moisture is held within +/-1%.

Residual moisture +/-1%
RF, RFA, TCRF series
RF ECO+ for dye-houses
Continuous RF/C dryer

Selecting a Stalam RF defroster by product

A defroster is chosen by product, freezing form and packaging. In the standard configuration COLDWAVE+ takes blocks and cuts from a few kg to 30 kg and up to 23 cm high; meat, fish and vegetables can be processed in PE film, bags, cartons, crates or naked.

For fish Stalam gives starting temperatures of -20°C to -18°C, 10 to 35 minutes and final temperatures of -6°C to -2°C.

Heat and defrosting time are set by the voltage on the electrode plates and the conveyor belt speed, so the unit works in line. Stalam quotes a pay-back period of 6 to 12 months from lower weight losses, which reach 6-8% with conventional defrosting.

Other RF processes: heating, pasteurisation, drying

Pumpable products are handled by the MEATFLOW+ tube-type heater (minced meat, emulsions, soups) and the SANIFLUID+ and EGGPURE+ pasteurisers. SANICROP+ and SANILEAF+ disinfest and sanitise nuts, grains, spices and herbs at 55-65°C and 80-100°C.

Bakeries use WAVEDRY+, WAVEBAKE+ and WAVESAN+, while textile mills use RF, RFA, RF ECO+, TCRF and RF/C yarn dryers with residual moisture held within +/-1%. Stalam units range from 3 to 450 kW.

Stalam and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Stalam and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.