Importance of OEM Plastic Molding        

Jan 29, 2021

What is OEM Plastic Molding?

OEM refers to Original Equipment Manufacturing. OEM Plastic Molding is a process that makes plastic parts that are promoted by the company they are created for. Furthermore, producing an OEM product enables you and the plastic injection company to take advantage of your specialty. This holds a great role in the whole production process until the ultimate assembly of the products.

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 Uses of OEM Plastic Molding

The process of injection molding produces thin-walled plastic parts for a range of applications. Out of which one the most common would be plastic housings.

You can use these housings in different products like household appliances, electrical appliances, power tools, etc. Injection molding also produces products such as buckets, toothbrushes, toys, and many medical devices for example syringes.

OEM plastic molding

 Advantages of OEM Plastic Molding:

OEM Plastic Molding has multiple benefits, perhaps this is the reason it has become famous across different industries around the world. The pros of it include:


A few plastic moldings have complicated designs hence they might require changes if the product is not quite up to the mark. This is where the injection molders can help create extremely on-point designs.

 Low Labour Costs in OEM Plastic Molding:

OEM Plastic Molding is quite a cost-effective method of production in terms of labour costs. Automation carries out a huge part of the injection molding procedure. The workers are resposibel for controlling it. Therefore, this keeps labor costs to the lowest, resulting in passing on the savings to the client.

 This would help new businesses attract potential customers since it would be able to provide them with top-notch products at a low price. Moreover, this method can prove to be very suitable for new start-ups that are low on their budget. E.g., a plastic products seller who has less amount of capital to invest in his business.

 Light weighting:

OEMs from various industries around the world are converting to plastic, to help lessen the weight of their products. In today's, strong plastic with less weight can take place of metal items with practically no deviation in the reliability of it.

 The business will be able to dedicate more time towards marketing:

OEM plastic products provide you with the value you need because your design would match your specifications accurately during the production process. The entire process will be handled by the supplier hence you will get the opportunity to spend that time on marketing your productscomponents.  You can advertise and carry out the promotion of your plastic products as well, using the ample time that you will have. This can ensure a higher percentage of chances for your business to succeed.

 High-Output Production:

If you need to produce a large batch of a single product, it can be done quite conveniently through injection molding. This is because it guarantees a continuous design, and the same mold produces all the parts. Hence, a  business can cater large orders of the same component using OEM Plastic molding since it ensures consistent productivity.  


We recommend that you hire an expert injection molder to produce the parts required. Perhaps, they are likely to be knowledgeable about the know-how of optimizing your design to make it faultless and manufacture the parts very efficiently. This would lead to minimum wastage and speed up the molding process as well.

 Multiple finishes:

Do you require your plastic parts to have multiple finishes? You can achieve that through plastic molding as well. Most parts come out with a smooth surface, almost near their ultimate look. But if you prefer a different appearance like matte finishes, unique textures, or engravings, injection molding can acquire the necessary finish you are looking for.

 The Plastic Injection Molding Process:

Injection molding is the most popular manufacturing method for the fabrication of plastic parts in a larger volume. The primary advantage of injection molding is the ability to scale production altogether. The process of Injection Molding requires the use of an injection molding machine, raw plastic material, and a mold.

Therefore, to sum it up, the plastic is melted in the injection molding machine and then injected into the mold after which it cools and solidifies in the final product. This process of injection molding is very short hence it consists of four stages are Clamping, Injection, Cooling, and Ejection.


Preparatory to the injection of the material in the mold, you close both the halves of the mold via a clamping unit. Each half of the mold is attached to the injection molding machine and the other half can slide. The powered clamping unit applies sufficient force to push the halves together hence keeping them securely packed while the material is injected. Larger machines take longer to clamp the mold though.


You insert the plastic pellets into the injection molding machine and moved towards the mold by the injection unit. You provide enough heat and pressure to the material so that they melt during this time. The molten plastic formed is then injected into the mold expeditiously and this amount of material that is injected is referred to as the 'shot.' You can determine the the injection time by shot volume, injection pressure, and injection power.


In this step, the molten plastic that is inside the mold starts to cool down after it contacts the interior mold. Furthermore, as the plastic cools it solidifies into the shape of the desired part of which some part may shrink during cooling.

You will have to wait for the cooling time and then open the mold. The cooling time depends on the thermodynamic properties of the plastic along with the wall thickness of the part.


The last stages include ejection from the machine which is done by an ejection system attached to the rear half of the mold. After the opening of the mold, you push the part out of the mold.

However, you need a certain force to eject the part because during cooling the part that shrinks ends up clinging onto the mold. To prevent that, a mold release an agent and you would sprayed onto the surfaces of the mold concavity before the injection of the material in the clamping stage. Therefore, as soon as you eject the part, the mold shuts down for the next shot of material injection.

Scope in OEM Plastic Molding:

Plastic molding is an easy, quick, and widely used technique with supplemental benefits of energy and cost-effectiveness. Since there is a high demand for plastic, it would lead to an increased buying for the componentsparts made by the business. Hence, This would help the business earn a high amount of profit  side by side.

The initiation of small start-ups will become much easier with the use of this method, considering its benefits to the business. As a matter of fact, it will provide more job opportunities along with contributing to local economies by bringing growth and innovation to the community, you establish it in.

Hence, all these benefits prove that a large number of businesses are likely to shift to/adapt OEM Plastic Molding in the near future considering its pros for both, the business, and the economy. This informs us how OEM Plastic Molding is likely to have such a high scope in the near future. 

You May Also Read: Plastic Injection Molding Machine Problems and Preventions

Take Away on OEM Plastic Molding

SZ-Changhong, is among the leading injection molding manufacturers. They have been designing and developing sophisticated molds and parts for years now. 

To ensure the quality of the product, they adhere to the highest industry standards. For more information, Contact Them Today!