This is how PET bottle processing takes place at Coca-Cola approved supplier plants

Ever wondered how the PET bottle containing your favourite Coca-Cola drink is made? It’s actually a very intriguing journey and a thorough procedure.

A series of processes, which have been perfected across the globe, go into the making of every PET bottle at the Coca-Cola plant, which is then filled with different beverages like Maaza, Sprite, Minute Maid and others. Here’s how it happens:

Resin Drying: At first, the PET resin is properly dried to attain the optimum utility and appearance of the bottle. Then the PET pellets are heated to the optimum drying temperature, which is a prerequisite for good drying. This is due to the PET polymer's’ high propensity to absorb moisture from the environment. Higher the drying temperature, the more quickly and thoroughly the PET dries. Efficient drying thus prepares the PET pellets to achieve the characteristics required for use.

Injection Moulding Process: Next, the pellets undergo a plastic injection moulding process, which produces countless high quality parts with great accuracy and high speed. Plastic material in the form of granules is then melted until soft enough to be injected under pressure to fill a mould. As a result, the bottle shape is replicated in every unit. Material for the part is fed into a heated barrel, mixed and forced into a mould cavity, where it cools and hardens to the configuration of the cavity. After this, the pre-form comes to the Coca-Cola plant.

PET Blowing Process in the Coca-Cola Bottling Plant: The final step of the process involves the use of the blow moulding machine. In this machine, the pre-forms are initially heated to make them malleable and are then blown with high pressure air in a mould to give them the desired shape.

After the completion of this process, the bottles come and are filled with various beverages after various quality checks.