Wolfking impingement tunnel freezer uses high velocity jets of air to directly blow at the top and bottom surfaces of product, and quickly reduce the outer temperature. Impingement cold air-jets remove the static surface boundary layer that surrounds the product resulting in a very fast freezing, small ice crystals and thus high product quality, minimizing dehydration loss.
It applies to products with a high surface area-to-weight ratio and ideally freeze shrimp, fish and other flat products, minimizes cellular damage, improves yield and increases shelf life to enhance food quality.