8 Best Injection Moulding Materials – Go4Mould

Go4Mould is an ultimate injection molding company that provides various injection materials for your project. We know our customers’ needs with more than 16 years of on-field experience in China. That’s why we have an international reputation as the most trusted injection molding service provider.

Our expert team guides the customers through the injection molding process and helps them in material selection for their project. Go4Mould’s professional engineers design and creates the perfect mold for your business.

Figure 1 8 Best Injection Moulding Materials

Figure 1: 8 Best injection moulding materials 

This blog post will tell you about the 8 best injection moulding materials for your injection molds.

Injection molding – Briefing 

Injection molding is one of the most popular manufacturing processes used today. It produces parts with complex geometries and features such as threads, undercuts, and hollow cavities.

Injection molding can be performed with a wide variety of materials, including metals, elastomers, and thermoplastics. However, thermoplastic is the most feasible and budget-friendly injection moulding material to perform injection molding, and many companies, including Go4Mould, prefer using plastic for its beneficial properties.

8 best injection moulding materials 

Injection moulding materials are a vital part of the injection molding process. the injection process highly depends on what type of plastic material you choose. Below is a list of the 8 best injection molding materials that you can use to perform injection molding.

  • Polyethylene (PE)

Figure 2 Polyethylene (PE)

Polyethylene is a lightweight, durable plastic with a low melting point. This injection moulding material is used in various applications, including food packaging, containers, and toys. PE is also popular in the medical field that does not allow shrinkage and is used for making prosthetic devices and tubing.

  • Polyoxymethylene (POM)

Figure 3 Polyoxymethylene (POM)

Polyoxymethylene (POM) is a semi-crystalline engineering thermoplastic injection moulding material used in precision parts requiring high stiffness, low friction, and excellent dimensional stability. 

Its high strength and rigidity characterize POM. In addition, POM has excellent abrasion and wear resistance. It also has a low coefficient of friction against metals, glass, and most other plastics. POM is frequently used as an alternative to metal bearings and bushings.

  • Acrylic (PMMA)

Figure 4 Acrylic (PMMA)

Acrylic is a clear plastic that is often used in injection molding. It has good clarity and weather resistance, making it ideal for applications where transparency is essential. It can be dyed or painted to create a variety of colors.

Figure 5 Polypropylene (PP)

Polypropylene is another injection moulding material that is low cost and has high strength with good stability. PP can be molded into parts with intricate designs, making it ideal for medical and consumer products. It is also FDA-approved for food contact, making it a good choice for food and beverage containers.

  • Polycarbonate (PC)

Figure 6 Polycarbonate (PC)

Polycarbonate is rigid, durable, and one of the best plastics for injection molding. It’s used in everything from bullet-proof glass to medical devices. It’s also lightweight, which makes it easy to transport and handle during injection molding. Polycarbonate also has a high melting point, which makes it ideal for high-temperature applications.

  • Nylon Polyamide (Pa)

Figure 7 Nylon Polyamide (Pa)

Nylon is an injection moulding material that is widely used in engineering plastic with excellent mechanical and thermal properties. Nylon can be processed by injection molding, extrusion, and 3D printing. It is strong and durable, making it ideal for making mold parts in the automotive industry. Nylon is also resistant to heat and chemicals.

Figure 8 Thermoplastic Elastomer (TPE)

TPEs are a versatile class of injection moulding material used in injection molding. They offer some unique benefits that make them ideal for injection molding. TPEs are thermoplastic elastomers, which means they have both the properties of plastics and rubbers. It makes them highly versatile, as you can use them in injection molding.

Figure 9 Acrylonitrile Butadiene Styrene (ABS)

ABS plastic is a terpolymer made from the monomers acrylonitrile, butadiene, and styrene. ABS is tough, rigid, and has a high melting point, making it ideal for injection molding. It’s commonly used in toys, automotive parts, and consumer electronics. It is available in various colors and can be painted or dyed to create different looks.

Injection material choosing considerations

When choosing the right material for your injection molded parts, there are many factors to consider. The most important considerations include the properties of the final part and the production process.

Some other essential injection moulding material properties to consider are:

  • Choose raw material with low tensile strength, i.e., easy to break or mold like plastic.
  • With a molding tool, check the elongation properties of the injection material that how much it can stretch before breaking. It is essential for parts that need to flex or bend.
  •  The material’s resistance to indentation or scratches also matters a lot.
  • Your material should have shock-absorbing properties.
  • Dimensional stability is also the main element to consider. The material can maintain its shape and size under different conditions.
  •  Last but not least, thermal resistance is also a factor that contributes to the injection molding process. It helps the material maintain its properties at high temperatures.

Injection molding service provider in China

Go4Mould is a leading molding service provider in China. We have a team of experienced and skilled professionals who use the latest technology and equipment to provide high-quality molding services to our clients. We have a wide range of services, including mold design, manufacturing, molding, and assembly. We also offer after-sales services to our clients and are committed to providing the best possible services. Contact us anytime to get your queries resolved.

Frequently asked questions-8 best injection moulding materials

1. What plastic is used in injection molding?

The most common plastic used in injection molding is PVC. PVC is also solid and durable, making it ideal for injection molding. Other common plastics used in injection molding include polyethylene, polypropylene, and polystyrene.

2. Can HDPE be injection molded?

Yes, HDPE can be injection molded. HDPE has a high melting point, so it can be melted and injected into a mold to create the desired shape. You can make plastic bottles, containers, and other objects – thus making HDPE a good choice for injection molding.

3. What Products Can Be Made from Injection Molding?

You can make various products from injection molding, including medical devices and toys. For instance;

  •  Crate Mould
  •  Basket Mould
  •  Bucket Mould
  •  Hanger Mould
  •  Bottle Cap Mould and many others
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