Advantages of Plastic Injection Molding - The most suitable option for manufacturing high volume plastic parts.

Maqsood Mohammed

Maqsood Mohammed

18th May 2021 · 6 min read

A detailed blog about the various advantages of Plastic Injection Molding in terms of cost, flexibility, features, process etc.

Advantages of Plastic Injection Molding - The most suitable option for manufacturing high volume plastic parts.

Advantages of Plastic Injection Molding - The most suitable option for manufacturing high volume plastic parts.

Plastic injection molding is a well-established manufacturing process used to produce parts and products. The process involves injecting molten plastic into a specific mold to produce the final product. The mold specifications are first designed by an industrial engineer or a designer who takes all-important settings into account which includes the material to be used in the end product, the quality of the product, and also the properties of the plastic injection molding machine. The moulds are usually created from steel or aluminum, keeping in mind the product, cost, and durability requirements.

Injection molding technique is indeed revolutionary for the manufacturing industry. It can mold basic designs to complex parts & products with increased efficiency and cost-effectiveness. Plastic injection molding has helped to produce diverse products, be it an essential medical unit, a piece of Mop Head, automobile part or a fancy toy; the process works with precision.

Here are the significant advantages you should know about Plastic Injection molding:

1. Higher Flexibility

The plastic injection molding part comes with a tremendous amount of flexibility in designs. The freedom of the technique allows the clients to create customized designs as per their requirements which is an amazing feature in comparison to the conventional molding process. It helps users to choose multiple material selection at the same time with precise designs and flexible in terms of colour choices which is one of the significant advantages for clients in need of plastic parts. The advancement of modern technology allows companies to use various colouring techniques and multiple finish appearances like the matte finish or exclusive textures which can be added to plastic with the help of the plastic injection molding process.

2. Environment-Friendly Process

Environmental considerations must go arm in arm with industrial manufacturing processes. The plastic industry is one of the highest non-biodegradable solid waste generating sectors in the world, which leads to plastic waste accumulation and creates plastic pollution. Repeatability is very frequent in injection molding, which uses only the required amounts, and the material can be reused, which helps in producing less waste in comparison to traditional techniques. Unlike conventional machines, the injection molding process allows for recycled plastics which is more efficient and also produces much less waste. Various leading manufacturers around the world are committed to green initiatives. The excess plastic is recycled using state of the art machinery, thereby lessen the waste produced.

3. High-speed mass production process

The production process is designed using CAD (Computer-aided designs) technique which is used to create the desired parts as per client guidelines. Compared to traditional methods of molding, it is extremely quick with cycle times that can run between 15 and 30 seconds. The process of injection molding is performed mainly by machines that allow for mass production of parts and creating a high product volume. Automation helps in cost-saving and lower the overall cost of manufacturing the components which can easily be passed on to the customer.

4. Cost-effective

One of the reasons associated with reduced costs is the ability to manufacture plastic parts in mass with the least time input and high output ratio by the plastic injection molding process. Once the mold has been created carefully, it can be used for mass production for a longer run. The process is completely computerized with a minimal human intervention which reduces the chances of human error and saves supervision costs. Due to automation, a majority of the work is carried out by computers and robotics, which are sole operators and can control and manage the manufacturing process, which indirectly helps in lowering the labour cost.

5. Low cost per part

Apart from being repetitive, plastic molding technique serves low cost per part as opposed to other traditional methods. Setting plastic molding tools can seem a high investment, but when it comes to per part cost, it is much cheaper. As in different methods, there are multiple operations involved such as polishing etc. which require additional cost whereas plastic injection molding involves no further steps.

6. More Powerful

Most of the industries are using durable, lightweight plastic parts with increased strength, even in the most rugged environments. For example, in the agricultural industry or automobile industry, even small plastic parts are required to be extremely strong and durable. The plastic injection molding process helps to use fillers in the injection molds which are specially selected to add high strength to the plastic parts which include different materials like mica, calcium carbonate, silica, glass, etc. The filler helps in increasing the strength as well as lowering the density of the plastic and make it strong and durable.

7. Comprehensive Features

In recent times, Plastic injection molding became the most popular process in the world of plastic technology. The process makes it possible to create complicated designs and add complex detailings to the parts. The complete procedure is automated, which helps in producing intricate and cost-effective designs.

8. Use different plastic types altogether

In the process of Plastic injection molding, users can use different types of plastics with different properties according to their industrial process needs. In some cases, we need to alter only the basic properties of plastic-like texture, density, color, etc. which is now attainable with Co-injection molding. Co-injection molding Process assists to use different types of plastic altogether which takes away the worry about using a specific type of plastic. The primary benefits of using this technique include reduced costs, reduced energy usage, and increased strength.


In recent years, the plastic injection molding process has gained huge popularity and considered one of the best alternatives to produce plastic components. The earlier mentioned advantages point out the different benefits that the process offers to the world. The technology offers design and material flexibility to produce plastic parts in a cost-efficient manner with high speed.

The process of Plastic injection molding is most adaptable within the modern plastic manufacturing process as it is not just better in terms of efficiency or reliability, but it is also environment-friendly. The manufacturing process reduces overall waste production, and there is a possibility of reusing minimal scraps. In the end, it depends on so many elements, including quantities required, material size, design, or budget. The designer has to evaluate each product idea to decide the most effective way of manufacturing it.

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