• June 21, 2024
  • Shatou, Changan, Dongguan, CN
injection mold

Why are injection molds so expensive?

Injection molds are a key production tool widely used in the manufacturing industry. However, many people may be confused by the high price of injection molds. Why are injection molds so expensive? This is a question worth discussing, and this article details the reasons why injection molds are expensive.

What is Injection Molding?

Injection molding is a processing method for manufacturing products. It injects heated and molten plastic or rubber materials into a specific mold, and after cooling and solidifying, the desired product is formed. Injection molding is commonly used in mass production of various plastic products such as plastic parts, containers, toys, plastic pipes, etc. This forming method has the advantages of high production efficiency, high product forming precision, and complex shape products can also be processed.

So why are injection molds so expensive?

1. Material cost

Injection molds are usually made of high-hardness, high-strength, and high-wear-resistant special steels. These steels are expensive and have strict process requirements. They need to be processed into molds through multiple processes.

2. The complexity of the mold

Costly mold design decisions often include the following: multiple cavities, engraving, multiple material injections, side pull actions, textures, inserts, and tight tolerances. Although more expensive, these decisions may be necessary or beneficial later in the process. Certain complex molds may require a hydraulically released drill, slide and tilt pin configuration.

3. Difficult to manufacture

The manufacturing process of injection molds includes multiple links such as processing, design, assembly and debugging. Every link requires high technical level and skilled operation to ensure the quality and precision of the mold. Especially for molds with complex structures and high precision requirements, it is more difficult to manufacture, and the required man-hours and costs are also higher.

4. High technical content

The design and processing of injection molds involves knowledge of multiple engineering and disciplines, including mechanical design, materials science, technology, industry experience, etc. Manufacturing a set of qualified injection molds requires experienced engineers and high-quality operators, and the design and manufacturing cycle is long, so the price is relatively high.

5. High precision requirements

Injection molds require high precision and high wear resistance to ensure the quality and appearance of plastic products. Mold manufacturing requires high equipment and technology to ensure that the parts are clean, aligned, free of rough edges, and durable.

6. Durability requirements

Injection molds usually require a large number of production cycles, so they need to have high durability and be able to withstand long-term high-intensity use to ensure the life and stability of the mold.

7. Labor costs

Skilled labor, professional mold making and designers don’t come cheap. Low costs can lead to errors, repairs are reflected on every part, and labor costs should never be overlooked. The manufacture of injection molds is a complex and time-consuming process that requires great skill. Professional manufacturers are expensive, don’t try to get cheap.


The high price of injection molds stems from their unique design, manufacturing and material costs. Although expensive, injection molds play an irreplaceable role in modern manufacturing. Understanding the cost and value behind injection molds can help people better understand their importance and make budgets and decisions in practical applications.

Through more efficient and accurate injection mold manufacturing, people will be able to further improve production efficiency and product quality, and promote sustainable development of the manufacturing industry.

Other Common Problems of Injection Molds

How much does an injection mold cost?

The price of injection molds varies due to many factors, such as the size, complexity, material, process, etc. of the mold. Generally speaking, the price of an injection mold usually ranges from $3,000 to $100,000. The specific price needs to be quoted according to the actual situation.

How long is the service life of the injection mold?

The service life of injection molds generally ranges from several thousand to more than one million times, depending on the quality and maintenance of the mold itself. Reasonable use and maintenance can prolong the service life of the mold, improve production efficiency and economic benefits.

Which materials can be injection molded?

Injection molding is a common plastics processing method that injects many different types of materials into a forming mold. Commonly used materials include polypropylene (PP), polyethylene (PE), polystyrene (PS), polyvinyl chloride (PVC), nylon (nylon), polycarbonate (PC), polyester (PET), polyphenylene sulfide (PES), etc. In addition, special engineering plastics such as polyamide (PAI), polyimide (PI), polytetrafluoroethylene (PTFE), etc. can be used for injection molding. Different materials have different performance characteristics and application fields, and the selection of suitable materials depends on the requirements and intended use of the product.

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