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5 liter Extrusion blow moulding machine

As a manufacturer of bottles, gallons, or any other plastic product, you probably know what a 4 liter extrusion blow molding machine is, but you may be wondering if it is suitable for a high-volume production process. Whether you want to buy a plastic extruder or already have one, Pars Machinery understands how important it is to keep your process up to speed.

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Your 5L extrusion  blow molding machine should always be able to meet the exact production expectations you have of it, which is why we’re here to walk you through the process in more detail. From start to finish, understanding how it works will help you make a more informed choice about your inflatable plastic device.

What is Extrusion Blow molding Machines?

Simply put, plastic extrusion is a “high-volume manufacturing process” in which raw plastic is melted and formed into a continuous profile. Plastic extrusion machinery is useful for speeding up workflow and volume. It’s also great for ensuring your products are consistent, made to your exact specifications every time.

How does the 5 liter extrusion  blow molding machine work?

5L extrusion  blow molding machine The raw plastic material is input, it comes out as a parison, and it is molded, but let’s break it down into more detail.

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Spiral design of 5 liter blow molding machine

As the material enters one end of the extruder, it is gradually melted by the heat and energy generated by the rotating spirals. These spirals are located along the hopper of the machine where raw materials are melted. Most screw types have three different areas to move during the extrusion process:

Feeding area: This is where the plastic composite material enters the machine.

Melting Zone: The next part in the spiral design is where the plastic melts.

Metering Zone: Finally, the metering zone is where the final pieces of plastic are melted and mixed to create a uniform temperature and composition.

Temperature control

To ensure that the raw material does not decompose or weaken, it is necessary to maintain a constant temperature inside the hopper or tank of the 4 liter blow molding machine. Overheating of the material must be avoided to reduce defects, so the material is usually heated gradually from back to front. Before your product is extruded into the mold, the temperature is also maintained using a series of fan and water cooling systems.

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Types of 5-liter blow molding machine

Unlike an injection molding machine, which injects material into individual molds, plastic blow molds allow your product to be manufactured continuously. Depending on the type of product being produced, there are different types of molds that can be implemented in your process.

Advantages of the 5-liter blow molding machine

Blow molding is one of many processes used by plastic injection molding companies. The process involves placing a molten tube of thermoplastic material (often called a preform or parison) into a mold cavity and blowing it. It is compressed air. Air forces the molten parison to fit into the cavity of the mold.

Due to its efficiency, the 4-liter pneumatic injection machine can be used in various industries. Additionally, this process enables engineers to create multiple designs and applications that lead to multiple uses. The following are four notable advantages of the 4 liter air injection machine.


Plastic blow molding is an automated production process that allows seamless integration of parts and increased production speed due to the precision products it produces. Also, automation helps manufacturers maintain the quality of a wide variety of blow molding products.

Mass production

The blow molding process results in quality output. For this reason, it is one of the most widely used plastics in the world. Using machines that are capable of 3D molding, blow molding can help manufacturers produce many units in a short amount of time.

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The 4 liter blow molding machine uses a relatively lower level of pressure. This reduces the costs incurred in the production process and makes the product affordable. Also, the use of automatic 4-liter pneumatic injection machine allows manufacturers to minimize high labor costs.

Multiple production methods

The variety of methods made possible by blow molding allows manufacturers to have multiple production options and wider possibilities on manufactured products. For example, extrusion blow molding can be used to produce products such as bottles and gallons, while injection blow molding produces containers in large quantities. Furthermore, blow molding is a process that is constantly evolving with the ultimate goal of full automation.


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Buy a 5-liter blow molding machine

For more information on our 4L and 5L blow molding machine, visit our site or contact us today.

We are a leading manufacturer of pneumatic and injection molding machines and can provide consultation for your needs.

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