Pet Food Freeze Dryer

1. Pre-freezing stage: Pet food ingredients are rapidly frozen at -30℃ to -50℃, converting the moisture in the material into solid ice crystals. This process effectively protects the material's cellular structure from damage.

2. Primary drying (sublimation drying): In a high vacuum environment ≤10Pa, the material is slowly heated by a heating system, causing the solid ice crystals to directly sublimate into water vapor. The sublimated water vapor is captured and condensed in a cold trap.

Key control: If the temperature exceeds the eutectic point of the material, collapse may occur—the material melts, resulting in poor appearance and poor rehydration.

3. Secondary drying (desorption drying): The temperature is increased to remove the bound water tightly bound to the material, reducing the final moisture content to below 5%. Freeze-dried products can be stored for a long time in sealed containers, with a shelf life of 20-30 years.

Core Advantages of the Equipment

Compared to traditional pet food processing equipment such as hot air drying and frying, freeze dryers for pet food, with their unique technological advantages, meet the modern pet owners' demand for "natural, healthy, and nutritious" products, making them the preferred equipment for high-end pet food processing. Their core advantages are as follows:

1. Strong Nutrient Preservation: The entire process is low-temperature processing (no high-temperature stages), maximizing the preservation of heat-sensitive nutrients such as protein, amino acids, vitamins, and probiotics in pet food ingredients. Protein loss is less than 3%, and rehydration efficiency reaches over 95%. After rehydration, the taste and appearance are almost identical to fresh ingredients, providing pets with more comprehensive nutrition, especially suitable for puppies, senior pets, and pets with sensitive stomachs. It also preserves the original flavor of the ingredients, improving palatability by over 40% compared to traditionally processed products.

2. Safety and Hygiene: Utilizing physical dehydration, no preservatives, palatability enhancers, or colorings are required. The finished product meets EU CE, US FDA, and domestic pet food safety standards, making it suitable for export pet food production. The equipment operates without wastewater or exhaust emissions, employing energy-saving technologies such as heat pump recovery, consuming only 20%-30% of the energy of ordinary dryers, meeting dual carbon targets and significantly reducing energy costs over the long term.

3. Wide Adaptability: It can process various pet food raw materials such as fresh meat, offal, fruits and vegetables, grains, and probiotics, suitable for the production of raw meat chunks, pet jerky, fruit and vegetable crisps, functional supplements, and pet health products. A full range of models and specifications are available, allowing flexible selection based on production scale. Customized processes are also supported, addressing pain points such as fishy smell, browning, and oil oxidation in raw meat and seafood pet foods. Equipment parameters and processes can be optimized to meet the personalized production needs of different enterprises. It can also process raw materials in different forms, adapting to diverse product development.

4. Enhance product added value: Freeze-dried pet food can be stored at room temperature for 18-24 months, which facilitates long-distance transportation and warehousing, significantly reduces raw material loss rate, and solves the pain points of fresh meat, fruits and vegetables being easy to rot and difficult to store; the finished product price can reach 3-6 times that of ordinary dried pet snacks, with significant premium space, helping companies improve profitability.