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Debunking Common Misconceptions About Plastic Injection Moulding

In the realm of manufacturing, plastic injection moulding stands as a cornerstone technology, driving innovation across a broad spectrum of diverse industries. Yet, despite its widespread use and proven efficacy, one sometimes still encounters surprising misconceptions surrounding this versatile process. In this latest Amey Plastics blog, we take some time to delve into some of these fallacies and debunk them one by one.

  1. Cost Inefficiency: One prevailing myth is that plastic injection moulding is prohibitively expensive for small-scale production runs. However, advancements in technology, such as computer-aided design (CAD) and computer-aided manufacturing (CAM), have significantly reduced setup costs. Additionally, the scalability of injection moulding enables cost-effective production, whether it’s a small batch or a large-scale order.

  2. Limited Material Options: Some may believe that plastic injection moulding restricts material choices to a few basic polymers. On the contrary, modern injection moulding processes offer a wide range of materials, including engineering-grade plastics, bioplastics, and even metal-filled composites. This versatility allows manufacturers to select materials tailored to specific project requirements, be it strength, durability or aesthetics.

  3. Lack of Design Flexibility: Another misconception is that injection moulding imposes limitations on product design. While it’s true that certain design considerations are necessary to ensure mouldability, modern techniques like multi-cavity moulds, overmoulding and complex tooling have expanded the realm of possibilities. With careful design optimisation and the aid of simulation software, intricate geometries and fine details can be achieved with precision.

  4. Environmental Impact: Plastic injection moulding often receives criticism for its perceived environmental footprint. However, advancements in materials science have led to the development of eco-friendly alternatives, such as biodegradable and recycled plastics. Moreover, injection moulding minimises material waste by utilising precise amounts of raw materials and facilitating efficient recycling processes. You can explore the topic of recycled plastics in more detail by checking out our blog.

  5. Long Lead Times: There’s a misconception that plastic injection moulding involves lengthy lead times, slowing down product development cycles. While tooling fabrication may indeed require some time, once the mould is ready, the production process can be remarkably swift. With automated systems and optimised workflows, manufacturers can achieve rapid turnaround times without compromising on quality.

  6. Quality Concerns: Some sceptics question the quality and consistency of injection-moulded parts, fearing variations and defects. However, modern injection moulding machines employ advanced control systems to maintain precise parameters throughout the production process. Furthermore, rigorous quality assurance protocols, including in-process inspections and statistical analysis, ensure that parts meet stringent standards of accuracy and durability.

  7. High Maintenance Requirements: Another misconception is that injection moulding equipment demands extensive maintenance, leading to downtime and increased operational costs. While regular maintenance is essential for optimal performance, modern machinery is designed for reliability and efficiency. Routine upkeep, coupled with predictive maintenance strategies, can help prevent breakdowns and prolong the lifespan of equipment.

Plastic injection moulding is clearly a versatile and cost-effective manufacturing process that continues to evolve and innovate. By dispelling these common misconceptions, we can appreciate the full potential of injection moulding technology in driving efficiency, sustainability and product excellence across diverse industries.

If you have any questions or require further information about plastic injection moulding, feel free to reach out to us. The Amey Plastic’s team is here to help you navigate the world of manufacturing with clarity and confidence. Contact us on 01730 266525 or email us at


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