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PET Plastic Bottle Preform Quality
2026-04-09
In the production of plastic bottle packaging for cleaning and care products, the preform is the initial form of plastic bottles, and its quality and design directly determine the final performance and application of the bottles. As the core intermediate product, the PET preform serves as the foundation for blow molding into finished plastic bottles, making its key parameters crucial and irreplaceable.
The preform’s size, thread mouth and weight are three core parameters that have a direct impact on the bottles’ use and performance. The size of the preform must be precisely controlled, as it determines the final volume, shape and wall thickness of the plastic bottle—too large or too small a preform will lead to unqualified bottle size, affecting the packaging of cleaning and care products. The thread mouth, as the connecting part between the bottle and the cap, needs to have accurate specifications to ensure tight sealing, preventing leakage of liquid cleaning products during storage and transportation.
The weight of the preform is equally important, as it is closely related to the strength and durability of the plastic bottle. A preform that is too light will result in a thin bottle wall, which is easy to deform or break; a preform that is too heavy will increase material cost and cause unnecessary waste. In addition to these parameters, the material purity and molding precision of the PET preform also affect the overall quality of the plastic bottle, ensuring it meets the safety standards for packaging cleaning and care products.