Injection blow molding is an extremely important aspect of the manufacture of Pet Bottle Preform. This process is divided into four steps. Each step contains specific tools and equipment for making preforms for pet bottles.

First step - cavity
When polyethylene terephthalate is exposed to a relatively strong heat source, it begins to melt into a liquid form. The molten material must then pass through a manufacturing process known as IBM or injection blow molding.

At this stage of the pet bottle preform manufacturing process, molten polyethylene terephthalate is injected directly into the mold cavity. The shape of this cavity is like a test tube, and you might find it in the science class. You may also want to know how to create a spiral top and whether it is a difficult process. Fortunately, the screw cap is actually molded to the top of the tube shape at this stage. The shape itself is called a preform.

Step 2 - Transfer to the bottle mold
Once the preform parison is formed, it must be transferred to a second mold. This mold is different from the first mold because it is shaped like a bottle to be manufactured. The preform must then be clamped into the second mold. The action of moving the preform from one mold to another can be done by hand. However, many companies use machines and equipment that work continuously. By doing so, they do not have to manually move the preform, as this would be very time consuming and less economical.

Step 3 - Using the compressor
The first thing you should know about blow molding is that it is not based on a new and innovative process. It is actually an ancient process that humans have used for about two thousand years. It was originally used in the glass blowing process and is still very interesting today.

The type of blow molding we saw in the IBM process was slightly different because it used modern compressors. These compressors should always be the primary priority in any factory setting. This is because all different pet bottle preform manufacturing processes require the injection of pressurized air. This is something that only a compressor can produce effectively.

Traditionally, manufacturers have used a compressor called a reciprocating compressor. They are capable of producing large amounts of plant air to make pet bottle preforms with complex designs.

Today, companies prefer to use more energy efficient low pressure systems such as centrifugal compressors. These compressors do not produce as much power as conventional compressors, but they do produce higher airflow rates. This is very cost effective, especially when you consider their energy savings.

The pet bottle preform manufacturing process step actually involves inserting a thin steel bar called a mandrel into the preform preform formed in the first mold. The mandrel then fills the parison with a large amount of high pressure air. Air stretch the polyethylene terephthalate until it has the same shape as the bottle mold surrounding it.

Step 4 - Cooling polyethylene terephthalate
Once the pressurized air stretches the thermoplastic PET into the shape of the bottle being manufactured, the bottle must be rapidly cooled. Otherwise, there may be many different issues.

This can be done using a tool. It can be done directly or indirectly, depending on the factory settings. For example, a tool can be used to spray pressurized air or carbon dioxide directly onto the bottle. This will be a straightforward approach.

Other methods involve utilizing a piping system around the mold and allowing cold water to flow through them. This indirect method may involve the use of a piping system around the mold. You can do this by passing cold water through them, cooling the PET in the mold without touching anything. Either way, the bottle must cool quickly.

After that, you only need to use tools to trim out the excess polyethylene terephthalate that leaked during the manufacturing process. If your system uses a continuous process, you must separate one bottle from the next.

Jilian Plastics is an experienced pet product design and supplier. Our 5-Gallon Pet Preform have been loved by many consumers in the market. We believe that choosing our products will give you comprehensive protection, so there is If you are interested, please come and leave us a message.