What is Plastic Bottle Preform?

Plastic bottle preform usually refers to the original formed part of a plastic bottle, which looks like a test tube. It is a semi-finished product formed by filling raw materials into molds under specific temperature and pressure. Through blow molding processing, they can be made into packaging container such as plastic bottle. Plastic bottle preform is usually stored and transported in simple bottle shapes, waiting for subsequent processing steps. As an important intermediate product in the production of plastic bottle, the quality of preform has a significant impact on the final plastic bottle product.

Plastic bottle preform machine, also known as bottle preform making machine, plastic preform making machine, is a kind of injection molding equipment specifically used for the production of plastic bottle preforms. As an intermediate product in the plastic bottle production process, the quality and molding accuracy of the preform directly determine the appearance, mechanical properties and service life of the final bottle. Therefore, the forming process of the plastic bottle preform is of crucial significance to the entire plastic bottle production line. Through the injection molding process, plastic bottle preform machine melts thermoplastic raw materials such as PET and injects them into special molds. After cooling, it forms preform products with consistent shapes and precise dimensions, providing stable raw materials for the subsequent blow molding process.

Plastic particle heating
Plastic particles are fed into the barrel through feeding system and heated into molten condition by heating system.

Molten plastic injection
Under the push of the screw or piston, the molten plastic is injected in to the mold cavity with high pressure and high speed.

Cooling and molding
Cool the molten plastic in mold to form a plastic preform with a certain shape and size.

Demolding and subsequent processing
After the preform is completely cooled, the formed preform can be automatically removed through the mold opening mechanism and then process treatment like inspection and packaging.

Feeding system
Raw material like PET is conveyed stably, continuously and efficiently from storage container to the barrel of the plastic bottle preform machine , providing raw material guarantee for the subsequent heating and melting.

Injection system
It is the core component of the plastic bottle preform machine, responsible for heating and plasticizing raw material of plastics. After that, the molten plastics are injected into the mold cavity by certain pressure and speed.

Clamping system
It is mainly responsible for ensuring that the mold can be closed, opened smoothly and the product can be ejected. When the mold is closed, it will provide sufficient clamping force to resist the cavity pressure generated, ensuring the quality of the product.

Electrical control system
It ensures the machine which can meet various requirements in the process including pressure, temperature and time control, as well as the execution of various preset programs, providing a fully automatic control mode to meet different production needs.

Heating and cooling system
Heating system provides necessary heat for barrel and injection nozzle. The barrel is usually equipped with electric heating rings. Cooling system is used to reduce the temperature of barrel, nozzle and mold to prevent overheating or deforming.

Safety monitoring system
It is composed of numerous detection elements which together form an interlock protection system that integrates electrical and mechanical systems. Once any abnormality is detected, it will immediately activate the indication or alarm mechanism.

Provide fully-automated production

Beverage Industry