PET Preform

PET preform is an essential raw material in the plastic bottle manufacturing industry. Because of its reputation for transparency and pressure resistance, PET preform has become the top choice for many packaging products, especially bottles and containers.

Input Materials for PET Preform Production 

The primary input material for producing PET preform is PET plastic resin. The process of producing preforms involves chemical synthesis reactions in the following steps:

Esterification: In this step, Ethylene Glycol (EG) and Terephthalic Acid (PTA) are combined through an esterification reaction to create PTA Polyester. This reaction generates a type of virgin polymer called prepolymer.

Polycondensation: The prepolymer then undergoes a polymerization process (polycondensation) under high temperature and pressure conditions. During this process, prepolymer molecules bond together to form long chains of PET polymer. This process results in the final product, PET resin pellets.

The end product is PET resin pellets used for manufacturing preforms. Preforms are used to create various products such as bottles, boxes, bags, and many other plastic items. PET is one of the most common plastics, known for its transparency, impermeability, and recyclability, making it widely used in the packaging and packaging industry.

Role of PET Preform in Plastic Bottle Manufacturing

Preforms made from PET plastic are the primary material used to manufacture PET plastic bottles and containers. They are applied in the production of packaged food, beverages, motor oil, and many other products.

• PET’s transparency allows consumers to easily see the product inside the bottle, ensuring product integrity and attractiveness. This type of plastic has the ability to withstand pressure, especially during transportation and storage, ensuring that PET bottles do not deform or leak. Regarding the preform production process, PET resin pellets are placed in a preform molding machine to create PET preforms. During this process, the PET pellets are heated and molded into preform shapes with specific dimensions. This is a crucial step in creating high-precision preforms for the subsequent bottle blowing process.
• PET preforms play a crucial role in the plastic bottle manufacturing and packaging industry. Its transparency, durability, and recyclability have made PET the top choice for many packaging products.

How are PET Preforms Blown into Bottles? 

Blowing PET bottles uses PET preforms as the main material. The process goes through several short stages. Preforms are essential components for producing bottles with precise sizes and shapes as required.

• First, the necessary quantity of preforms needs to be prepared. 
• Then, based on temperature and pressure, the preforms are placed in a bottle blowing machine to melt and become pliable. 
• Once the preforms have reached the required temperature and pliability, the bottle blowing process begins. The preforms are placed in a blow mold, and one end of the preform is connected to a compressed air system. 
• Compressed air is pumped into the preform, with high-pressure air and heat causing the preform to expand, filling the mold and taking on the shape of a plastic bottle. After the bottle has expanded sufficiently, an immediate cooling process is required to solidify the bottle and make it rigid. This cooling process determines the final shape and size of the bottle.

The PET bottle blowing process is crucial and requires tight control over temperature, pressure, and timing to produce high-quality PET plastic bottles.

Quality PET Preform Supplier 

Pavico Vietnam Joint Stock Company is a large-scale PET preform supplier. We offer over 100 different options for customers to choose from. Pavico’s list of jars and bottles preform:
PET preform 89mm 36g
PET preform 85mm 56g
PET preform 68mm 60g
PET preform 52mm 60g
PET preform 45mm 28g
PET preform 45mm 10g
PET preform 24mm 29g
PET preform 36mm 20g
PET preform 28mm 26g
PET preform 20mm 13g
PET preform 33mm 60g
PET preform 18mm 18g

With many years of experience in the packaging industry, we can meet a wide range of needs, from producing packaging for food, cosmetics, pharmaceuticals to packaging for chemicals.

We regularly train our staff professionally, especially technical staff to control automatic machinery systems.