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What is the role of the compressor when making PET plastic bottles

Update:26-11-2021
Summary:

No matter which method the manufacturer uses to produce […]

No matter which method the manufacturer uses to produce PET plastic bottles, compressors, there is a common problem. Many different types of compressors are used throughout the industry, and compressors are the hardware that needs the most attention.
The compressor is responsible for injecting high-pressure air into the parison to stretch the parison until it fits perfectly in the bottle-shaped mold surrounding it. This means that the compressor must be good enough to accurately control the overall air flow into the parison, otherwise it will not form a shape.
Traditionally, reciprocating compressors are used in the manufacturing process of PET plastic bottles. These compressors use pistons to generate a lot of pressure, but in terms of cost efficiency, they are not very good. Therefore, most new companies prefer to use centrifugal compressors. These compressors are cost-effective and use less pressure.

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