Full Product Introduction
This complete vacuum freeze-drying production line for pets is a full-automatic integrated production equipment specially developed for the premium pet food market. Adopting vacuum freeze-drying (FD) technology as the core, material dehydration is completed under low-temperature vacuum environment throughout the whole process, which is fundamentally different from traditional thermal processing methods such as hot air drying, baking and extrusion.
The equipment enables mass production of high-end pet food including pure meat freeze-dried products, raw meat bone freeze-dried food, complete freeze-dried staple food and functional freeze-dried snacks. It retains the original nutrition, shape and flavor of raw materials to the maximum extent. It serves as core capacity equipment for pet food enterprises to deploy premium product lines and improve product premium capability.
The equipment enables mass production of high-end pet food including pure meat freeze-dried products, raw meat bone freeze-dried food, complete freeze-dried staple food and functional freeze-dried snacks. It retains the original nutrition, shape and flavor of raw materials to the maximum extent. It serves as core capacity equipment for pet food enterprises to deploy premium product lines and improve product premium capability.
The production line adopts modular integrated design and is equipped with a PLC intelligent central control system, realizing closed-loop automatic operation covering raw material pretreatment, ultra-fast freezing, vacuum freeze-drying and finished product packaging. Core parameters such as temperature, vacuum degree and drying duration can be precisely controlled to guarantee consistent quality among batches. It widely satisfies demands of pet food manufacturers for new capacity construction, product line upgrading and capacity expansion of OEM/ODM factories.
1. Core Process Advantages
Following internationally recognized vacuum freeze-drying principle, the production line completes material dehydration through three steps: ultra-fast deep freezing – vacuum sublimation – low-temperature desorption drying. No high-temperature damage occurs in the whole process to guarantee premium product quality from the source.
Ultra-fast deep freezing to lock freshness and maintain shape
The plated raw materials are rapidly cooled down to -35℃ ~ -40℃ to form uniform tiny ice crystals inside materials, minimizing damage to cell structure. After freeze-drying, products maintain intact shape with excellent rehydration performance and restore original texture of fresh ingredients.
Ultra-fast deep freezing to lock freshness and maintain shape
The plated raw materials are rapidly cooled down to -35℃ ~ -40℃ to form uniform tiny ice crystals inside materials, minimizing damage to cell structure. After freeze-drying, products maintain intact shape with excellent rehydration performance and restore original texture of fresh ingredients.
Vacuum sublimation dehydration to preserve full nutrition
Under high vacuum environment, ice crystals inside materials are directly sublimated from solid state into gas and removed via precise temperature control. The dehydration skips liquid phase, thoroughly avoiding dissolution loss of nutritional components, protein denaturation and volatilization of flavor substances. The retention rate of nutrients such as protein, vitamins and amino acids in finished products can reach over 95%.
Under high vacuum environment, ice crystals inside materials are directly sublimated from solid state into gas and removed via precise temperature control. The dehydration skips liquid phase, thoroughly avoiding dissolution loss of nutritional components, protein denaturation and volatilization of flavor substances. The retention rate of nutrients such as protein, vitamins and amino acids in finished products can reach over 95%.
Low-temperature desorption drying for long-term stable storage
After sublimation stage, desorption drying is carried out with gradient heating to remove bound water inside materials. The moisture content of finished products is precisely controlled below 5%. Combined with subsequent nitrogen-filled packaging, no preservatives are required and products can be stored stably at ambient temperature with stable shelf life.
After sublimation stage, desorption drying is carried out with gradient heating to remove bound water inside materials. The moisture content of finished products is precisely controlled below 5%. Combined with subsequent nitrogen-filled packaging, no preservatives are required and products can be stored stably at ambient temperature with stable shelf life.
Rich original flavor and superior palatability
Freeze-drying technology fully retains natural meat aroma and texture of raw materials. Products can quickly return to fresh state after rehydration with high acceptance by pets. Compatible with multiple premium formulas including high fresh meat, raw meat bone and grain-free recipes.
Freeze-drying technology fully retains natural meat aroma and texture of raw materials. Products can quickly return to fresh state after rehydration with high acceptance by pets. Compatible with multiple premium formulas including high fresh meat, raw meat bone and grain-free recipes.
2. Core System Configuration of Whole Line
The whole line is laid out in closed loop according to freeze-drying process flow. Fully enclosed production reduces contamination risks with seamless connection between each unit. Core systems include:
Raw Material Pretreatment System
Equipped with integrated equipment for cleaning, cutting, weighing and automatic tray loading. Raw materials can be processed into blocks, granules, cakes and other shapes according to product requirements with accurate quantitative tray loading. Suitable for processing pure meat, raw meat bone, fruits, vegetables and egg yolk.
Raw Material Pretreatment System
Equipped with integrated equipment for cleaning, cutting, weighing and automatic tray loading. Raw materials can be processed into blocks, granules, cakes and other shapes according to product requirements with accurate quantitative tray loading. Suitable for processing pure meat, raw meat bone, fruits, vegetables and egg yolk.
Ultra-Fast Deep Freezing System
Adopting high-efficiency deep freezing warehouse / freezing tunnel with branded refrigeration units. The core temperature of raw materials drops below freezing point within short time to form fine and uniform ice crystals, laying stable quality foundation for subsequent freeze-drying.
Adopting high-efficiency deep freezing warehouse / freezing tunnel with branded refrigeration units. The core temperature of raw materials drops below freezing point within short time to form fine and uniform ice crystals, laying stable quality foundation for subsequent freeze-drying.
Vacuum Freeze-Drying System (Core Unit)
Composed of drying chamber, high-vacuum unit, zoned heating system and refrigeration water trapping system. Multi-stage temperature curve design enables precise regulation of sublimation temperature, vacuum degree and drying duration according to different raw material formulas. Bulk materials are heated evenly to ensure consistent moisture content and rehydration performance for each batch.
Composed of drying chamber, high-vacuum unit, zoned heating system and refrigeration water trapping system. Multi-stage temperature curve design enables precise regulation of sublimation temperature, vacuum degree and drying duration according to different raw material formulas. Bulk materials are heated evenly to ensure consistent moisture content and rehydration performance for each batch.
Discharging Tempering System
After freeze-drying, products are warmed up to ambient temperature stepwise in closed environment. Anti-condensation protection module avoids condensation and moisture regain when cold products directly contact air, ensuring finished moisture meets standard stably.
After freeze-drying, products are warmed up to ambient temperature stepwise in closed environment. Anti-condensation protection module avoids condensation and moisture regain when cold products directly contact air, ensuring finished moisture meets standard stably.
Screening, Grading & Quality Inspection System
Multi-stage vibrating screening matched with cyclone dust removal automatically removes broken particles, defective products and dust. Optional metal detection and weight sorting modules online reject unqualified goods to unify appearance and quality of finished products.
Multi-stage vibrating screening matched with cyclone dust removal automatically removes broken particles, defective products and dust. Optional metal detection and weight sorting modules online reject unqualified goods to unify appearance and quality of finished products.
Sterile Nitrogen-Filled Packaging System
Connected with integrated equipment for quantitative filling, nitrogen-filled sealing, date coding and case packing. Finished products are sealed under low-oxygen clean environment to effectively isolate oxygen and moisture and greatly extend shelf life. Supports bag, can, box and other packaging forms.
Connected with integrated equipment for quantitative filling, nitrogen-filled sealing, date coding and case packing. Finished products are sealed under low-oxygen clean environment to effectively isolate oxygen and moisture and greatly extend shelf life. Supports bag, can, box and other packaging forms.
Intelligent Central Control System
PLC touch central control platform with visual setting and real-time monitoring of full-line parameters. Supports storage of multiple freeze-drying process curves, automatic recording of production data and intelligent fault early warning. Simple operation reduces manual errors and labor cost.
PLC touch central control platform with visual setting and real-time monitoring of full-line parameters. Supports storage of multiple freeze-drying process curves, automatic recording of production data and intelligent fault early warning. Simple operation reduces manual errors and labor cost.
3. Core Equipment Features
- Food-grade safety standard: All material contact parts adopt 304/316 food-grade stainless steel. No sanitary dead corners for easy disassembly, cleaning and disinfection, complying with pet food production hygiene specifications and export food equipment standards.
- High automation: Automatic operation from freezing to freeze-drying without frequent manual intervention. Only 2–3 operators are required for whole line to greatly cut labor cost and manual contamination risks.
- Flexible customized capacity: Drying shelf area covers specifications from 10㎡ to 200㎡. Customized configuration available from small lab trial production to large-scale mass production; modular design facilitates future capacity expansion.
- Stable finished product quality: Precise control over temperature, pressure and time. Consistent moisture content, shape and nutritional indicators among batches. Finished products feature high rehydration rate, intact appearance and low breakage rate.
- Optimized energy consumption: Equipped with high-efficiency refrigeration unit and waste heat recovery system, lower energy consumption than non-standard equipment of same type with excellent long-term economic efficiency.
- Lower circulation cost: Extremely low moisture content allows storage and transportation under ambient temperature without cold chain, greatly cutting warehousing and logistics cost.
4. Reference Technical Parameters
| Parameter Item | Small Freeze-Drying Line | Medium Freeze-Drying Line | Large Freeze-Drying Line |
|---|---|---|---|
| Drying Shelf Area | 10–20㎡ | 50–100㎡ | 150–200㎡ |
| Single Batch Capacity | 50–150kg | 300–800kg | 1200–2000kg |
| Minimum Cold Trap Temperature | ≤-55℃ | ≤-55℃ | ≤-60℃ |
| Working Vacuum Degree | 10–100Pa | 10–100Pa | 10–100Pa |
| Finished Moisture Content | ≤5% | ≤5% | ≤5% |
| Single Batch Drying Duration | 18–24h | 20–26h | 22–28h |
| Total Installed Power | Approx. 40kW | Approx. 120kW | Approx. 220kW |
| Operators | 2–3 persons | 3–4 persons | 4–5 persons |
Note: The above parameters are reference values for standard models and can be customized according to customer raw material formulas, capacity demands and site dimensions.
5. Application Scope
This production line manufactures all categories of high-end freeze-dried pet food including but not limited to:
Pure meat freeze-dried snacks (chicken breast, duck meat, salmon, egg yolk, capelin, etc.)
Complete raw meat bone freeze-dried staple food (for cats / dogs)
Functional health freeze-dried food (gastrointestinal care, hair beauty, calcium supplement formulas, etc.)
Mixed freeze-dried supplementary food, freeze-dried crumbles for mixing with staple food
Widely applied for pet food brand self-built factories, pet food OEM/ODM manufacturers and premium pet snack producers.
Pure meat freeze-dried snacks (chicken breast, duck meat, salmon, egg yolk, capelin, etc.)
Complete raw meat bone freeze-dried staple food (for cats / dogs)
Functional health freeze-dried food (gastrointestinal care, hair beauty, calcium supplement formulas, etc.)
Mixed freeze-dried supplementary food, freeze-dried crumbles for mixing with staple food
Widely applied for pet food brand self-built factories, pet food OEM/ODM manufacturers and premium pet snack producers.
6. Supporting Services
- Provide complete line planning and customized layout & equipment configuration according to customer site, capacity and formula demands
- On-site equipment installation, commissioning, freeze-drying parameter debugging and trial production guidance
- Technical training for operators covering equipment operation, daily maintenance and common troubleshooting
- Complete machine warranty, long-term supply of original spare parts and lifelong technical support
- Optional technical consultation including freeze-dried formula optimization and production process upgrading.
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