Nylon injection molding | All you need to know

Figure 1 Nylon Injection Molding

Figure 1: Nylon injection molding

With the increasing inflation, the manufacturing industry faces a problem: soaring raw materials prices. 

Yet, plastic injection molding continues to be the beacon of ease and reliability. Due to its effectiveness, nylon injection molding is on the rise. Not only does it help to minimize the cost, but it also helps in business growth and client satisfaction. 

Interesting facts:

Nylon holds a substantial market share in the injection molding industry, accounting for around 15-20% of all thermoplastic materials used in injection molding processes globally.

What will you learn?

This blog will highlight all you need to know about Nylon injection molding. So, let’s start.

Nylon injection molding | An overview 

Figure 2 Nylon Injection Molds

Figure 2: Nylon injection molds

The nylon material is melted again and pumped into the mold cavity at high pressure in the nylon injection molding manufacturing step. With this technique, the designer can do the convolute design and perfect and complex curves with the required accuracy.

Do you know?

However, thermoplastic nylon intends to offer all the benefits of withstanding heat, strength, and flexibility, which can be considered a response to the changing market needs.

Industrial application is where it works most favorably due to its strong resistance to various chemicals and an extremely abrasive environment. Nylon also has another unique trait: its very low friction coefficient, which is why mechanical devices function smoothly in the atmosphere.


Nylon is undoubtedly an excellent material for making many things in hot and cold weather as it does not crack down under load while at a low temperature. It plays a significant role in the products we use daily, such as hardware components you find around the house (car parts & stuff), gears, and bearings.

Nylon injection molding is used in various industries, which might be end products for people to consume, such as electronics and automobiles. It is famous for having a high value despite its low price. By Sara Maftoonhy Whether you want to use it for small or oversized items, it is excellent to have it on hand.

What is the process of nylon injection molding?

Figure 3 Process Of Injection Molding

Figure 3: Process of injection molding

The injection molding of nylon has the operational principle as follows:

  1. This process begins when nylon pellets melt into a liquid. This is usually done in an injection molding machine.
  2. After melting, high pressure injects the nylon into a mold cavity. The mold is made of metal and has the desired shape for the final product.
  3. Then, this liquid nylon gets injected into the mouth of a mould before cooling off rapidly until it hardens.
  4. When solidification occurs, removing the molded part from its mold will reveal the final result.
  5. It can be done multiple times to achieve similar-looking parts.
  6. Melting of nylon pellets, injecting molten nylon into molds, cooling and solidifying in the mold cavity, and then ejecting them out are all relevant steps.

Nylon injection molding enables the production of complex shapes and designs with precision and efficiency. It is widely used across various industries due to its versatility and cost-effectiveness.

Advantages of nylon injection molding 

Due to the reliability of the nylon grades, nylon injection molding has plenty of advantages. 

1. Precision 

Nylon injection molding allows for highly accurate and detailed products to be made. This means the final product will closely match the design specifications, ensuring consistency and quality.

2. High-temperature resistance 

Nylon is famous for coming through temperatures higher than its boiling point while staying without the rise of deformation or other changes in properties. This is why this process is considered a suitable choice for instances where heat retention is of the essence since nylon injection molding deals with cases regardless of the complex temperatures.

Figure 4 Example of Nylon

3. Durability and Strength

The main positive aspects of nylon injection molding are its sturdiness and long life. Moreover, they are to be chosen for wear applications because of their resistance to tearing down and abrupt environmental changes.

Extreme stresses and challenging climates don’t affect the integral of the molded portions. The product holds more, has better endurance, and demands fewer replacements.

4. Resistance to chemicals

Nylon is resistant to most chemical agents because of its inability to interact with oils, greases, and solvents. This implies that nylon injection molding is an excellent choice because your product will not break or fall apart even when exposed to several chemical substances; thus, it makes them suitable for a wide range of applications.

5. Cost-effectiveness 

Nylon injection molding is reasonably priced, particularly for massive reproduction. It allows quick production cycles, less than optimal quantities, and effortless waste management; at this moment this reduces the production costs and offers the end product to the consumer more affordable.

Exploring the difference | Nylon 6 Vs Nylon 66 

Injection molding usually involves using two types of nylon: Nylon-41 (polyamide) and Nylon-66. It is the known name for either polyamide 6 or nylon 6, which are from the common groups of nylon.

Figure 5 Nylon

The other is called nylon 66, produced from diamine (hexamethylene) and adipic acid. If impact resistance is required, Nylon-66 has a notchy melting point and can easily be stretched Nylon-6 has a low melting point and is flexible.

In contrast to Nylon 66, it has high tensile strength and better heat resistance and thus can be used for compound materials and parts that experience high temperatures.

If you want to learn about HDPE injection molding, read our latest blog here.

Things to consider during nylon injection molding

Several factors must be considered during nylon injection molding to ensure successful production. 

  • Choosing the suitable nylon material according to the part’s specifications is essential, considering strength, flexibility, and temperature resistance. 
  • Mold design and production require careful consideration to eliminate flaws and produce the intended part geometry. 
  • Attaining consistent and superior outcomes requires optimizing processing parameters like temperature, pressure, and injection speed. 
  • The injection molding machine and mold must be maintained correctly to reduce downtime and guarantee sufficient production. 
  • Comprehensive testing and quality control methods are crucial to identify issues early in manufacturing and ensure that the final goods meet specifications and performance standards.


The effectiveness and adaptability of nylon injection molding technologies have gained widespread recognition, enabling many industries and contributing to worldwide economic prosperity. 

Because nylon injection molding can reliably and accurately produce delicate parts of high quality, it remains a significant force in modern production, promoting innovation and industrial growth.

Your best bet for excellent injection molding services is Go4mould. Our unparalleled proficiency in nylon injection molding guarantees superior outcomes for your endeavors. We offer various materials and molds, ensuring a smooth and effective manufacturing process from beginning to end.

For all your injection molding requirements, trust Go4mould and enjoy superior product delivery and customer service. For more information, please get in touch with us. 

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