Twin screw extruders have significant advantages in pet food production, meeting the high requirements of modern pet food for nutrition, safety, form, and functionality. The following are its main advantages and specific manifestations:
1. Efficient mixing and uniformity of twin-screw pet feed machine
Advantages: The meshing design of the twin-screw (rotating in the same or opposite direction) achieves high-strength shearing and mixing, ensuring uniform distribution of raw materials such as meat, grains, vitamins, etc.
Application: Avoid nutritional stratification, especially suitable for high-end pet food with added functional ingredients such as probiotics and phospholipids.
2. Flexibly adapt to complex formulas
Multi material processing: It can simultaneously process high moisture raw materials (fresh meat slurry), dry powder (starch), oils, etc., to meet special formula requirements such as gluten free and high protein.
Real time adjustment: By adjusting the screw combination or process parameters (such as temperature and speed), quickly switch product types (such as puffed grain and semi wet grain).
3. Precise process control of pet feed making machine
Accurate temperature control: segmented heating/cooling system to avoid high temperature damage to thermosensitive nutrients (such as vitamin C and enzyme preparations).
Controllable cutting: By adjusting the screw speed and pressure, the starch gelatinization degree (affecting digestion rate) or protein denaturation degree (affecting taste) can be optimized.
4. High production capacity and energy conservation
Continuous production: The forced conveying capacity of twin-screw reduces blockages, making it suitable for large-scale continuous production, with a production capacity of several tons per hour.
Energy optimization: Compared to single screw, energy consumption is reduced by 1530% (such as processing 1 ton of pet food consumes about 80120kWh of electricity).
5. Diversified product design
Shape customization: By changing molds, producing particles, strips, 3D shapes, etc., to meet the palatability and brand differentiation needs of pets.
Texture regulation: Controlling puffiness can produce crispy (dog food) or soft (elderly pet food).
6. Hygiene and safety
Self cleaning feature: The screws of the twin-screw pet feed machine rub against each other to reduce residue, lower the risk of contamination between batches, and comply with FDA/AAFCO hygiene standards.
High temperature sterilization: The processing temperature (usually 120, 150 ℃) can inactivate pathogens such as Salmonella, ensuring the safety of pet food.
7. Functional Expansion
Coating and coating: Integrating vacuum injection or spraying systems in the post extrusion stage, adding flavorings (such as liver extracts) or health ingredients (such as chondroitin sulfate).
High moisture products: By adjusting the moisture and screw structure, semi wet grains (25-35% moisture) can be produced without the need for additional preservatives.
Puffed dry food: mainstream dog and cat food, which improves starch digestion rate through high-temperature puffing.
Snacks: Squeezed out and baked into meat strips or cookies.
Prescription food: precise control of fiber and protein content to assist in managing pet diseases (such as urinary health).
The twin-screw pet feed extruder, with its mixing efficiency, formula flexibility, precise process control, and hygiene advantages, has become the core equipment for high-end pet food production, especially suitable for the development of innovative, functional, and customized products, helping enterprises quickly respond to market demand.
