The preform mould is engineered to precisely control the temperature and pressure during the injection molding process to ensure uniformity and accuracy. It can also be customized to produce preforms of varying sizes, neck shapes, and wall thicknesses, depending on the final application. PET preform moulds are usually made from high-strength materials such as steel or aluminum to withstand the high pressures and temperatures involved in the process.

The process of creating a preform with a PET mould involves several key steps:

Injection Molding: The first stage is the injection of molten PET resin into the preform mould. The PET resin is heated to a specific temperature where it becomes fluid enough to flow into the cavity of the mould. The mould then closes, and the resin is injected under pressure.

Cooling and Solidifying: Once the preform is shaped inside the mould, it is allowed to cool and solidify. The cooling phase is crucial to ensure that the preform maintains its integrity and the correct dimensions.

Ejection: After the preform has cooled and solidified, the mould is opened, and the preform is ejected. The preform is then ready for the next step in the manufacturing process, which typically involves blowing or stretching it into a full-sized container or bottle.

Inspection and Quality Control: Once the preforms are produced, they are inspected for defects, dimensional accuracy, and surface quality. A well-designed PET preform mould ensures minimal variation in the preforms, which is essential for the blow moulding process that follows.

https://www.pet-preform.com/product/pet-preform/cosmetic-pet-preform/
The diameter of the daily chemical bottle preform is 18/410, 20/410, 28/410, and the existing weight is 8g-30g. The bottle preform is widely used in all kinds of daily chemical products.