The secret of canned milk powder

I believe that many consumers have such doubts, open a new can of milk powder, which is not full? Is there so little milk powder in such a big cans? Cheat consumers???

Have you ever thought of that?

However, this is not a deception. In fact, milk powder is sufficient. If it is not filled, it is for the sake of food safety and for the sake of consumers. Let's introduce the production process of canned milk powder, and tell you why a can of milk powder is not fully filled, while leaving space, and the rest is used to hold "air"?

At present, tinplate cans are used in the mainstream packaging of milk powder cans in the market. The can lids are usually peel off lid, and then snap on the plastic lid or pilfer proof caps (it need to tear the tab to twist off the cap).

First of all, the cans are customized by the milk powder manufacturer. After putting the cans on the bottle trimmer, the cans are sent to the first process through the conveyor belt, that is, sterilization. Sterilization is the first safe way. Therefore, the matching UV sterilizer is selected for the can disinfection. Through the internally installed replaceable ultraviolet germicidal lamp group, the tank body is irradiated from four directions to kill the bacterial virus (conveyor belt 1) General use of Teflon mesh belt, the bottom can also be irradiated), automatic, no manual intervention, to ensure the sterilization effect

Secondly, milk powder filling, the use of automatic filling equipment, accurate quantitative filling, make milk powder accurate and sufficient filling into the tank, weighing filling integration, simple and convenient, raw material processing and filling separation, reduce human intervention, process control is simple, safe and pollution-free, convenient cleaning.

Milk powder into the can, came to the most important sealing process. In order to ensure food safety, milk powder must be stored in vacuum and filled with nitrogen. At present, the main technical requirements are to reserve 30% space for nitrogen filling, and the residual oxygen content is less than 3%, so as to extend the shelf life.

If you see here, do you realize why the canned milk powder mentioned above is not full. That's right. The remaining space in the tank is prepared to remove the excess air (oxygen) and fill it with nitrogen. The vacuum and nitrogen filling sealing machine of our Fangyuan machinery can vacuumize the tank. After completion, nitrogen with purity of 99.9% or more is filled in, and the can can can be sealed by crimping. After the operation is completed, the residual oxygen content in the tank is less than 3%, which meets the requirements of the manufacturer. Nitrogen is an inert gas, which will not oxidize with milk powder and protect milk powder from deterioration. Therefore, the shelf life of canned milk powder is longer than that of bagged milk powder.

After sealing the tank, the following processes are coding (marking the production date), pressing the dust cover, packing and other processes, which can be delivered after completion.

Guangzhou Utrust Packaging Equipment Co.,Ltd has manufactured customized milk powder filling production lines for several domestic milk powder manufacturers to meet the needs of customers. We have a professional production team, skilled developers, we according to the status of your products customized manufacturing packaging production line, if you are interested in our products, you can contact us, we will serve you wholeheartedly!

Milk powder filling production line chart:

Equipment introduction:

1. Cans unscrambler

Function: lead empty can into conveyor belt / end of production line to collect finished products

Feeding speed: 30-40 cans / min

By using the centrifugal force generated by the rotation of the turntable, the tank can enter the conveyor belt orderly through the preset channel


2. UV sterilizer

1. Total length of equipment: 2000mm

2. UV sterilization part: 1200mm

3. Conveyor belt width: 500 mm

4. Feed area length: 400mm

5. Discharge area length: 400mm

6. Height of entrance and exit: 200 mm adjustable

7. Distance between conveyor belt and ground: 750 ± 20mm

High efficiency, high intensity and ultra long service life of UV-C low-pressure ultraviolet disinfection lamp tube is selected, and the service life of lamp tube is more than 8000-10000 hours.
The quartz tube with high transmittance and high purity is selected, and the ultraviolet transmittance is above 96%

Ultraviolet refers to the sunlight with the wavelength between 200nm and 380nm, including three types: UV-A wavelength is 315nm-380nm, UV-B wavelength is 280nm-315nm, UV-C wavelength is 200nm-280nm. About 13% of the sunlight (290nm-2000nm) reaches the earth's surface, of which UV-A accounts for 97%, UV-B accounts for 3%, and UV-C is close to 0. Only UV-A and UV-B can damage human skin. UV-C ultraviolet lamp made by special technology is used for disinfection and sterilization.

3. Powder filling machine

Production capacity 10-25 cans / min

Applicable specification 1-1000g (change screw accessory)

Number of filling head: 1 (multi head optional)

Measurement error ± 0.5%

Power supply: 380V, 50Hz / 60Hz

Power 2.2kw

Overall dimension 2200 × 1000 × 1980mm

The weight is about 200kg


4. Vacuum and nitrogen filling can sealing machine

Main parameters and items:

1. Number of cans sealed: 1

2. Sealing speed: 5-7 cans / min (depending on tank size)

3. Applicable tank diameter: 30 ~ 150 mm (customized)

4. Maximum pressure of vacuum tank: ≤ - 0.1MPa

5. Working temperature: 0 ～ 55 ℃,

6. Working humidity: 85-95%

7. Working power supply: ac220v50 / 60Hz

8. Total power: 2.5kW

9. Severe: 600kg (about)

10. Air pressure: 0.6 ～ 0.8MPa


5. Nitrogen gas generator

Nitrogen production 5nm 3 / h

Power 5W

Purity ≥ 99.9%

Dew point ≤ - 38 ℃

Air source pressure 0.8-1.0mpa

Nitrogen production pressure 0.1-0.65mpa



6. Date coder

Laser type: metal jet code laser

Laser power: 30W

Marking mode: vector / lattice (5 × 7 / 6 × 12 / 7 × 14 / 8 × 16 / 12 × 24) mode

Marking range: 100 mm x 100 mm

Depth of focus: varies with the size of the field mirror

Information output mode: text string mode

Text: any line within the marking range (adjustable)

Flight marking speed: (normal 3 lines, 8 characters per line) steady state value < 50M / min (varies according to the number of characters)

Marking options: automatic serial number, batch number and real-time clock, automatic production date

Product detection input: photoelectric detector

Interface: reserved in cabinet shell, USB interface

Hardware components: print head bracket, control cabinet bracket

Power consumption: 0.5KW

Power demand: 220 V ± 22 V / 50 Hz / 12 A

Cooling: air cooling

Dimensions: 1200mm x 500mm x 1200mm

Weight: 100kg / 180kg automatic capping machine



7. Snap lid applicator

Function: plastic cover;

① The rubber cover in the cover storage groove is sucked into the buckle cover groove by using a pneumatic suction nozzle;

② The can is brought to the entrainment place by the movement of the conveyor belt;

③ The entrainment drives the can to move to take the cover out of the cover opening and press it down by the gland wheel;

Speed: 30-50 cans / min

For more information, please contact:

Email: [email protected]

Whataspp/Wechat: +86 15800042255