Close up of thermoplastic of different colors

Benefits Of Thermoplastics In Injection Plastic Molding

By Carter Kho

What are the benefits of thermoplastics in injection plastic molding?

  1. Availability of Material
  2. High Degree of Accuracy
  3. Cost-Effective
  4. Efficient Surface Finish
  5. High Capability of Recycling
  6. Manufacturing Speed
  7. Flexible for Any Industry


What is thermoplastic injection molding? It is the process of melting pellets to create a mold that is then quickly cooled in order for it to harden and be colored according to design requirements. Its flexibility as a manufacturing agent is evidenced by the continuous melting and cooling so it can be easily reshaped again. What are the other benefits of thermoplastics in injection plastic molding? Check out some more by reading about them here!


Availability of Material

Electrical wires wrapped in thermoplastic

Thermoplastics can be widely distributed among industries because they are available across the market. They are also commonly used in the injection molding process since it is not as scarce as thermosets, which is its counterpart material. Industries usually rely on thermoplastics to manufacture parts, except for some processes like electrical contact applications or those that require liquid silicone overmolds.

Industries clamor for the acquisition of thermoplastics since it is one of the few materials that can quickly fulfill design and manufacturing requirements with ease. The availability of the material allows businesses to focus on production without thinking about potential risks and damages.


High Degree of Accuracy

Products molded from thermoplastic materials have a high degree of accuracy for the purpose it is used for. It is durable for different applications and it even outlasts plastic machined parts in terms of longevity. Thermoplastics have the ability to be more accurate in terms of design because you can add fillers to its base material that can also add up to the material’s strength.

Thermoplastic injection molding is also very ideal for prototyping and other manufacturing runs. It is more efficient than 3D printing since you can determine the thickness of parts within a 0.2mm tolerance. You also have the option to manufacture advanced parts with respect to product diameter and linear features.



Close up of plastic water bottles

Since most thermoplastics are re-moldable, this makes them cost-effective since you won’t risk the chance of your part breaking as it cools down. The market has a high demand for thermoplastics because they can pursue innovation opportunities without making a dangerous dent in their budget. Commercial applications of thermoplastic materials have maintained a surge in the industry since its many uses help businesses achieve their manufacturing goals.


Efficient Surface Finish

Thermoplastics injection plastic molding can be used with other high-grade resins that can fulfill manufacturing requirements. One of the benefits that stands out the most for thermoplastics is the surface finish. A smooth finish accounts for small or large production runs, which can also open up opportunities for prototyping. Thermoplastics are also flexible enough that you can even manufacture rough surface finishes if your product calls for it. The accuracy in the finish is even seen in products that need a pebbled surface which gives way to an increase in functionality.


High Capability of Recycling

A person putting a plastic bottle into the recycling bin

It’s not only a good production material but it is also sustainable for any industry. Since thermoplastics consists of melting pellets then cooling them, you should know that the cooled part can also be re-melted. This means that parts manufactured from this type are recyclable. It is notable that thermoplastics can be recycled depending on the specific function you are going to use it for. Although the quality of the plastic is not the same as before you re-melted it, the part will still serve its function.


Manufacturing Speed

Thermoplastic parts have a high turnaround rate and when it is used for prototyping, the final product would be able to adapt to urgent design changes quickly. Once you use thermoplastics for prototypes, this increases your chance to release the final product into the market since you have the time to adjust the design accordingly. Thermoplastics can complete manufacturing runs within a few days, which means they can be on the market sooner than you expect.

Also, since this type is more open to recyclability, you can use parts again to achieve the design you are aiming for.


Flexible for Any Industry

A wall of plastic phone cases

Many well-known industries use thermoplastics for their products. You can manufacture plastic cases, car door panels, and even smartphone cases with a pristine surface finish and at a minimal amount of production. Thermoplastic injection molding also possesses a high production output rate which makes it the more efficient choice for businesses who would want to manufacture parts for their products. It has become the industry standard for producing plastic parts primarily because of the convenience and efficiency it brings to products.


Key Takeaway

The benefits of thermoplastics prove to be the primary reason why you should choose them for your next manufacturing project. Having a reliable product material and process will make all the difference in achieving a suitable product design for your business. The application of thermoplastics can go a long way but you must remember that it is only as good as the functionality you have planned for your product. Plan and build your process around the design you have then start from there.