After Drinking Pop-top Cans For So Long, Do You Know How Beer Is Put In?

When the summer heat wave hits, a can of ice-cold beer is undoubtedly the most pleasant summer heat relief. But have you ever thought about how they are put into cans?

Punching cups

First of all, cans are aluminum products. Aluminum is punched and cut to form cups with certain specifications and transported to the next process through a conveyor line.

Stretching and trimming

The bowl shape is stretched into a cup shape. While the diameter is reduced, the bowl wall is precisely stretched, thinned and raised.

The stretching machine, also known as the can body forming machine, is a double-action horizontal punching machine used to stretch the punched cup into a two-piece can body of a fixed size, the rough edge can is trimmed according to certain size requested by a trimming machine.

Cleaning and drying

The trimmed cans are cleaned, decontaminated, passivated and film-formed, and dried in an oven at a specific temperature to meet the standards for storing food.

Color printing drying

Next, print the pattern and information on the can body, then apply a layer of varnish to protect the ink.

Inner coating drying

A layer of paint is also sprayed on the inside of the can body to create a protective film to protect the aluminum can from being corroded by the beverage. It can also prevent aluminum from penetrating into the beverage and avoid the beverage from producing a metallic taste. Next, the can body quickly passes through the oven to bake and solidify the paint.

Neck shrinking and flanging

The mouth of the can is necked and flanging according to the required size to achieve a good match with the lid, and two-pass sealing is performed. On the assembly line, the can body passes through the neck shrinking machine to create a neck slightly smaller than the diameter of the can body, and then enters the flanging process. The machine will flip up a small edge on the top of the neck to facilitate lid installation.

Detection

After neck shrinking the finished cans with flanges must be packaged after online light leakage detection and video detection inside and outside the cans.

Stacking

The machine arranges the cans neatly.

Packaging and wrapping

The machine first wraps the stacked cans with plastic wrap, packages and sends them to the beverage manufacturer for the next step of filling and capping.

Fill in beer

Fill in the soul of the cans - beer.

Capping

Then, the conveyor belt transports the filled cans, aligns them with the interface roller, and the sealing machine rolls the flange and the lid tightly together. The professional term for this process is "double sealing".

A small can contains a lot of knowledge. 

As a recyclable aluminum resource, the recycling of cans can save more than 90% of energy, reduce environmental pollution, and give full play to the green and environmentally friendly characteristics of cans. Every recycled can means making a contribution to the country's dual carbon goals and reducing a burden on the earth.

Here, we call on everyone to start from themselves, develop a good habit of recycling cans, and jointly create a green and sustainable future.