Dfrosting Machine

Defrost in minutes, avoid drip loss and improve yield.
 

STALM has developed rapid in-line defrosting equipment based on radio frequency technology which allows for minimizing drip losses and minimizes product degradation due to bacterial growth. This rapid, uniform, and controlled heating method provides great flexibility in production scheduling and is the ideal solution for multiple tempering, softening, and defrosting processes.

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Benefits of Commercial Defrosting Machine

Defrosting in minutes

Defrosting is achieved in minutes instead of hours/days, even for large product blocks and, if necessary, can be used for direct storage or retail distribution (carton boxes, polyethylene liners, etc.) Inside the packaging.

No drip loss, no product degradation

Process speed and uniformity reduce the risk of product degradation (drip loss, degradation of sensory, chemical and physical characteristics, bacterial growth, etc.), thus helping to maintain the best quality of the product.

high product yield


Defrosting can be achieved with virtually zero drip loss, which means completely eliminating the weight loss (up to 6-8%) caused by traditional defrosting methods. The improved yield brings immediate economic benefits which allow the RF equipment pay-back period to be reduced from 6 to 12 months.

Uniform and Controlled Treatment


The product can be obtained at the correct temperature required for the next process. In addition, weather and outdoor ambient conditions do not affect the treatment, so it can be controlled accurately and consistently.

Less floor space, the lower process cost


Radiofrequency equipment requires much less floor space than conventional, large defrosting rooms or equipment; The cost of defrosting is also significantly reduced, thanks to the reduction of energy to the surroundings.

in-line process


The high process speed and radio frequency defrosting can be performed continuously, with significant logistical advantages in product handling and production scheduling. Production can be arranged according to the "just-in-time" criterion - a huge advantage in case of sudden orders, last-minute changes in orders or under processing, etc

how commercial defrosting machine works

The product is placed on the conveyor belt of the machine and moved continuously through an RF unit (tunnel) passing between the upper and lower metal plates. These plates (also called electrodes) form an electric capacitor and the product between the plates becomes the dielectric element of that capacitor. The electrode plates are connected to a radiofrequency generator that oscillates at a frequency of several million cycles per second. When the RF generator applies a high-frequency alternating voltage between the capacitor plates, the dipole water molecules of the frozen product will vibrate and rotate, attempting to align themselves according to the rapidly changing opposite plate polarities.

This phenomenon causes intermolecular friction, which, in turn, will generate heat rapidly and evenly within the entire product mass, regardless of its size, weight, shape, and thermal conductivity. The amount of heat generated inside the product and the defrosting time are precisely controlled through the voltage applied to the electrode plates and the speed of the conveyor belt.

Rapid defrosters for fish and seafood "COLDWAVE+"

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Fast and gentle radio frequency tempering process, the physical, biological and nutritional integrity of fish and seafood is best preserved, thus ensuring product freshness and health.

Various species of fish and seafood, whole, H&G, fillet, loin, steak/chunk, shell-on or peel can be RF defrosted: squid, calamari, octopus, scallops, mussels, sardines, salmon, tuna , swordfish, shrimp, prawns, crawfish, lobster, cod, pollock, hake, pangasius, halibut, catfish, toothfish, surimi, etc. Treatment can be done on IQF products or blocks. The multi-position upper electrode system and wide conveyor belt allow a wide range of sizes and weights to be processed: from a few kg to 30 kg and a few cm to 23 cm high (standard configuration). On request, the machine can be adapted to process larger and heavier blocks.

Thanks to the characteristics of the RF field and the variety of conveyor belts available, the product can be packaged (in PE film/liner or bag, open or vacuum, paper film, PE+carton, PP crate or tray, etc.) or "naked".

Rapid defrosters for vegetables, fruits, and other products "COLDWAVE+

Radio Frequency Tempering minimizes drip loss of frozen fruits and vegetables, thereby maintaining their texture, flavor and freshness.
Treatment can be done on IQF products or blocks. The multi-position upper electrode system and wide conveyor belt allow for the processing of a wide range of sizes and weights: from a few kg to 30 kg and a few cm to 23 cm high (standard configuration). On request, the machine can be adapted to process larger and heavier blocks.

Thanks to the characteristics of the RF field and the variety of conveyor belts available, the product can be packed (in PE film/liner or bag, open or vacuum, PE+carton, PP crate or tray, etc.) or in bulk.


vegetables
Carrots, corn, zucchini, tofu, spinach, peas, onions, seaweed, butternuts, potatoes, peppers, etc.

fruit
Strawberry, apple, berries, juice, fruit pulp, etc.

Other
Butter, margarine, ice cream, liquid eggs, prepared food, etc.

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Rapid defrosters for meat "COLDWAVE+" 

Radio frequency technology ensures fast and uniform tempering of large meat blocks, improving product yield by reducing drip loss.

Healing can be done on individual pieces (cuts) or blocks. The multi-position upper electrode system and wide conveyor belt allow for the processing of a wide range of sizes and weights: from a few kg to 30 kg and a few cm to 23 cm high (standard configuration). On request, the machine can be adapted to process larger and heavier blocks.

Thanks to the characteristics of the RF field and the variety of conveyor belts available, meat can be packed (in PE film/liner or bag, uncovered or vacuumed, PE+carton, PP crate, or tray, etc.) or "nude". ".

beef and lamb
Trimming, meatloin, oyster, tenderloin, shoulder, breast, neck, shin, shank, tongue, kidney, lung, etc., with different % of fat content.
pork
Shoulder, ham, trimming, waist, back, belly, legs, straps, shin, neck, etc. with different % of fat content.
poultry
Chicken, turkey, duck, etc.: fillet, breast, thigh, wings, drumstick, leg, bone-in or boneless, skin, MDM, trimmings, etc.
Play
Deer, hare, deer, deer, doe, etc.