Aluminum cans began to be used to contain soft drinks after World War II.
>>>Process of molding glass
The first step to creating a refreshing can is to put aluminum rolls, each weighing about 10kg, into the machine to lubricate.This makes aluminum move smoothly through the styling stages in the next steps.
Next, the aluminum plate is transferred to industrial aluminum presses.This machine cuts aluminum into circular discs and shapes them into cups.This stage is done at high speed, averaging 2,500 - 3,750 units per minute.
From the press, the cups are extended into a box-like shape.
In particular, the top of the box is cut and sharpened to make the boxes of equal size.
After that, the boxes are washed and dried, ready for decoration.
Next, cans are transferred to a printer, including about 6-8 types of ink printed on the cans at the same time.The cans are rotated when printing labels.Finally, the cans are coated with glossy coating and the ink protection layer is finished.
Next, the cans are put into the heat oven to cover the anti-chipping paint.
The inner part of the can is coated with a coating to prevent metal corrosion and contact between the drink inside and the box.
The can continues to be put through the furnace to dry the paint.
Then, the upper part of the box is narrowed into a can, ready for placing the lid after fresh water is poured.
The bottom surface of the can is folded into a concave dome shape, increasing the bearing strength of the can.
The finished product can be checked to detect leakage.A specialized machine will detect holes smaller than a hair.
The cans are stacked on pallets, then transferred to the beverage factory.
The can lid is made and transferred separately to the beverage factory.Similar to the production process of the box body.The can lid is also started from aluminum rolls, spread out, lubricated and put into a compressor.
A straightened line floated around the cap mouth.The glue mixture is poured into this contour, avoiding the collision between drinking water and cans.Finally, the 'pop-tap' opening strap is fixed to the top of the can, making it easier to open the can by pulling up and pushing the tab again.
