Packaging Process for Canned Beer

Packaging Process: Cans → Empty Can Unloading Palletizer → Chain Conveyor → Washing Machine → Filling Machine → Sealing Machine → Pasteurization Machine → Liquid Level Inspection → Date Printing → Packing or Shrink Packaging → Finished Product

1. Can Delivery

Process Requirements:

Defective cans must be removed.
Empty cans must undergo ultraviolet sterilization.
Prior to filling, empty cans are inverted and rinsed with water at 0.35-0.4MPa, drained while inverted, and then dried using compressed air.

2. Canning and Sealing

Process Requirements:

The top of the filling machine cylinder should be kept at a temperature below 4°C.
Carbon dioxide or compressed air backpressure should be used.
The beer valve should not leak, and the beer pipeline should be clear.
The filled beer should be clear and transparent with consistent liquid height and a capacity of 355±8ml.
After sealing, the canned beer should remain undistorted, leakage is not allowed, and the product's normal appearance should be maintained.
The canning principle is the same as that of glass bottles, using isobaric filling, and efforts should be made to minimize foam generation.

3. Sterilization

Process Requirements:

After canning and sealing, the cans are inverted and enter the pasteurization machine.
Adequate spraying water is essential to ensure a required sterilization effect of Pu15-30.
Fat cans and blackening of the can bottom should not occur.
Due to cans' superior heat conduction compared to glass, the sterilization time is relatively short, with a sterilization temperature generally ranging from 62°C to 61°C for at least 10 minutes.
After sterilization, residual water on the can bottom and body is removed by a blower.

4. Liquid Level Inspection

Gamma-ray (radiation source: cobalt-241) liquid level detectors are used to check the liquid level.

When the liquid level falls below 347ml, the receiver collects the information, which is then processed by a computer and transmitted to the rejection system, where it is rejected by a rubber rod.

5. Date Printing

An automatic inkjet printer is used to print the production date or batch number on the bottom of the can.

After printing, the canned beer is inverted, and then it is packed into boxes.

6. Packing and Shrink Wrapping

Packing can be done using a packing machine or manually, with 24 upright cans placed in a cardboard box.

Alternatively, a heat shrink film sealing and bundling machine can be used, with compressed air working pressure at 0.6MPa and the heat shrink film heated to around 140°C.
After heat shrink bundling, the film should be neatly covered and firmly sealed.

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TAG: Beer Filling Machine Cans Filling Machine