Plastic bottles takes place in stages. Plastic bottles used to hold portable water and other
drinks are made from polyethylene terephthalate (PET), because the material is both strong and light.
The first stage in bottle manufacturing is stretch blow molding.The PET is heated and placed in a mold,
where it assumes the shape of a long, thin tube.
The process by which the plastic is forced into the mold is called injection molding.
There are several cooling methods, both direct and indirect, that can effectively cool the mold and the plastic.
Water can be coursed through pipes surrounding the mold, which indirectly cools the mold and plastic.
After removing the bottle from the mold and removing excess plastic, the bottles are ready for transportation.
For doing all these things, automatic platic bottle manufacturing machines are available in indiamart.com,
alibaba.com websites also.
You can select the machinery according to your capability and consumption in your area.
You can have a water filter plant or otherwise you can supply to water filter plants as you like.
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Wishing you all the best,