PET preform molds come in various designs and sizes, typically tailored to the specific requirements of the products being produced, such as bottles of different shapes, sizes, and features.

One of the defining characteristics of PET preform molds is their precision. The mold must be capable of producing preforms with highly accurate dimensions and a consistent wall thickness.

Even minor variations in the mold cavity can result in defects in the preforms, which can affect the quality of the final PET bottles. Therefore, high-quality molds are designed with advanced engineering and strict tolerances to ensure uniformity in every preform produced.

The precision of the mold ensures that the PET preforms have the required structural strength to withstand the blow molding process, during which the preforms are expanded into the desired bottle shape.

PET preform molds are typically made from high-strength steel or other durable materials to ensure they can withstand the rigors of continuous operation. Since the injection molding process involves the rapid injection of molten plastic into the mold, the mold must be designed to handle the high temperatures and pressures involved without warping or becoming damaged.

Over time, molds can experience wear due to repeated use, so manufacturers invest in high-quality materials and coatings that enhance mold longevity and reduce the frequency of maintenance or replacement. Durability is particularly important in mass production environments, where molds need to withstand hundreds of thousands or even millions of cycles.

The design of a PET preform mold is typically quite complex. It must accommodate factors such as the type of plastic being injected, the weight and shape of the preform, and the cooling system needed to ensure the preform hardens correctly after being injected. The mold's cavities are designed to match the specifications of the desired preform, and precise control is needed to ensure that the preform is free from defects like air pockets, inconsistent wall thickness, or deformation.

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.