Benefits of Sichuan Aosituo Liquid Nitrogen Dosing Machine

A liquid nitrogen dosing machine (also known as a liquid nitrogen injector) is an automated device designed to inject a precisely measured amount of liquid nitrogen into packaging containers—such as aluminum cans or PET bottles—after filling but before sealing. Its core operating principle relies on the rapid vaporization of liquid nitrogen within the container (where it expands to approximately 700 times its liquid volume) to achieve specific packaging and preservation effects.

Liquid nitrogen dosing machines are primarily used in the packaging stages of industries such as food, beverages, and pharmaceuticals. The cryogenic properties and gasification-induced expansion of liquid nitrogen offer various benefits for both packaging and the products themselves. Specific advantages include the following:

1. Maintain package integrity and reduce packaging costs

1) Eliminate collapsed bottles and cans: As liquid nitrogen vaporizes within a sealed container, it expands rapidly to generate internal pressure. This effectively supports thin-walled packaging (such as PET bottles and aluminum cans), preventing collapse during cooling or transport and preserving the package's original shape.

2) Enable lightweight packaging: Pressurization with liquid nitrogen allows for a reduction in the weight of PET bottles, thereby lowering packaging costs while meeting environmental standards.

2. Extend product shelf life and enhance product quality

1) Reduce residual oxygen levels: Upon vaporization, liquid nitrogen—an inert gas—rapidly displaces oxygen in the package headspace. This lowers residual oxygen levels and inhibits microbial growth, thereby significantly extending the product's shelf life.

2) Preserve original flavor: As a colorless, odorless, and non-toxic inert gas, liquid nitrogen does not contaminate the product. It preserves the food's original quality, taste, and freshness, and can serve as a substitute for preservatives in certain applications.

3. Enhanced Production and Packaging Efficiency

1) Increased packaging efficiency: Liquid nitrogen dosing is rapid and automatically adjusts to production line speeds and dosing volumes; it is compatible with high-speed lines, significantly boosting production efficiency.

2) Improved labeling efficiency: After liquid nitrogen dosing, the packaging maintains a uniform, rounded shape and consistent rigidity, facilitating more efficient labeling.

4. Enhanced Transport and Storage Efficiency

Improved space utilization: The packaging maintains a uniform, sturdy shape, enhancing stackability, reducing the space required for storage and transport, and lowering logistics costs.

5. Enhanced Production Safety

Elimination of safety hazards: Liquid nitrogen dosing displaces oxygen within the packaging, mitigating risks associated with flammability and explosiveness, and eliminating safety hazards for certain products (such as carbonated beverages).

6. Cost and Resource Savings

Reduced gas consumption: Liquid nitrogen dosing systems feature "no-container, no-dose" capabilities and precise dosage control, minimizing liquid nitrogen waste and lowering production costs.

Technical Specifications of Sichuan Aosituo Liquid Nitrogen Dosing Machine

Model No.: BO300 Liquid nitrogen injector

1. Raw material: SUS304
2. Empty weight: 15kg
3. Size: 950*177*603mm
4. Power: 100W 220V 50Hz
5. LN2 pressure: <0.15Mpa
6. Gas N2 pressure: 0.5-0.65Mpa
7. LN2 dosing head size: 280*51mm
8. Arm length: 328mm
9. Dosing nozzle size: 1mm, 1.5mm, 2mm
10. LN2 consumption: 0.2L/h
11. Dosing time: 15-1000ms adjustable
12. Dosing volume: 0.01-14g/time adjustable
13. Dosing accuracy: ±5%
14. Spot spray speed: 0-800bottles/min
15. Max. continuous spray speed: 2000bottles/min
16. Remarks: (0086)18882125191