How does the Pet Preform is Made Work

Update:16 Apr 2018
Summary:

Have you ever thought about how a PET bottle is made? F […]

Have you ever thought about how a PET bottle is made? Few consumers know where the PET bottles come from and how they are made. The production of PET bottles is a separation process requiring diligence and careful quality control. As a first step, PET granules are preformed with the most advanced injection molding machines. The second step is to produce the final PET bottle using a stretch blower.

The basic components of Pet Preform is ethylene glycol and terephthalic acid, which combine to form a PET pellet. These resin balls are heated to molten liquid, which can be easily squeezed or molded into almost any shape. More specifically, long chains of polymers are formed when the two ingredients of Pet Preform combines at high temperatures and low vacuum pressure. As the mixture thickens, the chain grows. Once the appropriate chain length is reached, the reaction stops. The resulting spaghetti bine is squeezed, quickly cooled, and cut into small particles.

When the resin pellets are reheated to a molten liquid stage, the polymer chains can be stretched in one direction (for fibers) or in two directions (for bottles and films). If the polymer is cooled quickly while it is stretched, the chains are frozen with their orientation intact. Once set in stretched form, the material is extremely tough.

If Pet preform is held in the stretched form at elevated temperatures, it slowly crystallizes and starts to become opaque, more rigid and less flexible. This crystalline form Pet preform is often used for take-home and prepared-food containers and trays that can be reheated in the oven or microwave.

In the food industry, improving product quality is particularly important. In order to provide customers with the most advanced and high-quality products, the control has begun, and continuously carefully check the delivery of virgin grapes. In addition, ongoing production requires stable control. Because our machines work day and night, we need to check our pets' watches and bottles regularly. Therefore, we have special education employees working in the quality assurance field to meet our own requirements. In addition to the ongoing production, we also intend to conduct annual audits with external agencies. We have been recognized according to the strict requirements of the Food Safety Sytem certificate.



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