A Guide To Plastic Injection Molding Machines - FOW Mould

A Guide To Plastic Injection Molding Machines
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Plastic injection molding is basically the process of making plastic parts by injecting molten plastic into metal. Its history is traced to 1872. In an attempt to replace ivory billiard balls with plastic balls, American inventor John Wesley Hyatt developed the first plastic injection molding machine. 

As much as his goods didn’t fulfill the market’s requirements, his machine did. The plastic injection mold making industry has progressed significantly since the machine’s birth, from producing small and basic plastic parts like buttons to producing complex medical equipment today.

How A Plastic Injection Molding Machine Works

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Plastic injection molding is basically a four-step process: Melting down the material,  Injecting the molten substance using a mold, Allowing the molten substance to cool and solidify, and lastly but not least Taking the hardened material out of the mold. The Plastic injection molding machine works in the following way.

Main components of injection molding machine

Main components of injection molding machine
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We cannot explain the injection molding process without mentioning the injection molding machine. Understanding the injection molding machine will help you to understand the process better and easier.  The injection molding machine has several components which include:

Types of plastic injection molding machines

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Basically, molding machines are classified according to the kind of drive systems they employ. They include hydraulic, electrical, and electrical injection molding machines.

Hydraulic Injection Molding Machine

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Until 1983, when the first all-electric injection molding machine was introduced, the hydraulic technique was the only alternative accessible to molders. During the injection molding process, pressure-creating substances known as hydraulic oils are used to create pressure. This oil is pumped through a hydraulic motor, which rotates the screw. 

The creation of leak-free systems for the molding process is one of the most important aspects of hydraulic injection. Hydraulic oil may frequently spill into the plastic, causing imperfections. To protect the engine, it was necessary to carefully study seal design. Hydraulic injection molding machines have been popular due to their inexpensive cost and ease of maintenance.

Electrical Injection Molding Machine

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The first electronic hydraulic machine was introduced in Japan in the 1980s. It has been utilized as a replacement for the larger hydraulic machine ever since. High-speed service motors are used in electrical injection molding. It is simple to operate and more modern than the traditional hydraulic ones. 

Based on the injection molding cost, a lot of factories prefer this type of machine. This is because of the comfort and speed of production provided by this equipment, it is extremely cost-effective. At the same time, an electric hydraulic machine requires less maintenance and has a digital control option. This allows you to customize the amount of energy and pressure required.

Hybrid Injection Molding Machine

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Hydraulic injection molding and electrical injection molding are combined in this molding technology. It was created with both molding advantages and has proven to be superior to the previous two varieties. This molding method is very flexible and has the same selling quality as the previous two types of molding machines. 

A hybrid injection molding machine is preferred by many injection molding companies because it can save energy like an electrical system while maintaining the hydraulic unit’s accuracy. It may switch between the DC pump motors and the hydraulic pump, allowing each to function just when it is required. There are no quality compromises as a result of this.

How To Choose The Right Injection Molding Machine

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Injection molds, products, materials, shape, output, and other aspects are usually crucial when looking for the right injection molding machine. So, before making a decision, consider the following aspects.

While the aforementioned are the most important aspects to consider when choosing a plastic injection molding machine, there may be more factors to consider based on the project and the product’s uniqueness. Always ask for recommendations from injection molding manufacturers when you visit a company

Furthermore, purchasing an industrial machine with only a little knowledge may turn your money into a negative investment.

Where to get plastic injection molding service

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Plastic injection molding is a cost-effective solution that can help companies improve their operations and optimize their existing components. However, before a lot of industries benefit from plastic molding, they must first identify a reputable provider that can match their requirements. There are a  number of factors that should be considered when looking for a plastic injection molding service.

The injection molding materials used, understanding injection molding machine specifications, avoiding defects, considering the type of process suitable for a particular part, mold design and tooling, and plastic part decoration are some of those things to keep in mind when making your choice. When looking for a plastic injection molding factory, be sure to look at the following factors:

Researching plastic injection molding firms in your area is no longer sufficient. In order to avoid frequent difficulties such as late deliveries, poor quality, and capacity limits, you must know exactly what to look for in a provider. Immould injection molding company is the best China injection mold manufacturer. With 40 years plus experience in the field, we provide solutions for all plastic injection molding services globally. Our mold engineers and technicians are experts at creating unique components that meet exact client requirements.


Injection molding is an excellent method for large-scale completed production. It’s also handy for finished prototypes that are being tested by consumers or even mold suppliers. So understanding everything about it is very crucial for businesses that need to invest in high-quality products for their clients. For more information contact us.

A Guide To Plastic Injection Molding Machines

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