Plastic Injection Moulding

We are one of the leading plastic injection moulders; we provide plastic injection moulding services to a wide range of industries, including automotive, aviation, defence and electronics. Find out about how we can help you too.

About Plastic Injection Moulding

What is plastic injection moulding?

Plastic injection moulding is a manufacturing process for producing identical plastic parts. It is suitable for low to high volumes and small to large parts. Plastic polymers are available to suit every application for the final component, according the need for strength, durability, conductivity, aesthetic finish, fire rating, etc.

Before we can make the plastic components, we need an injection-mould tool, as this is the mould which defines the unique shaped part. An injection-mould tool can be designed to produce a single part, multiple impressions of identical, mirrored, or different components.

Plastic injection moulding is one of the most common methods of producing plastic parts.


Every client seeks components which are unique to their requirements. We will help optimise the process to create the finished part in the most efficient and effective way.

We manufacture a very wide range of both development and production mouldings for all industries; including medical, defence, aerospace, electronics, automotive, bio-tech and private sectors. We fully understand the discreet requirements associated with each Industry.

We work on a daily basis with a very broad range of high specification engineering and developmental plastics from simple ‘commercial’ polymers to the very latest nano-tube and metal replacement ranges.

Our injection moulding and tooling facilities are side by side for optimal work flow and control.

The mould shop currently comprises the latest digitally controlled machines from 35 ton to 300 ton. We can also accommodate larger components that would usually require a press size of up to 1,500 ton.

We can readily operate 24hr working for larger production runs and Expedited Services.

If you need a responsive, flexible and technically advanced supplier of plastic injection mouldings, we can provide the speed of service and quality you require.

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    We have a highly experienced team making Plastic injection moulded components for a wide variety of sectors, including:


    We mould in a very wide variety of materials, sourced from around the world. These include filled and unfilled ABS, acetals, acrylics, nylons, polycarbonates, polypropylenes, peek and ultems, but we also use some highly specialist materials with ‘extreme’ attributes in relation to flame retardancy, electro-conductivity or operational temperature ranges.

    We can help identify the material best suited to your final application and required aesthetic attributes.

    Machine sizes

    Plastic injection moulding machines are used to produce parts made out of thermoplastic materials like polypropylene or nylon. They are commonly used in industries like automotive, electronics, and pharmaceuticals. Injection moulding machines are large industrial equipment that produce thousands of plastic items per hour.

    We have a broad range of moulding machine sizes, from 35 tonnes to 300 tonnes.

    This allows us to manufacture parts which are very small, lightweight and potentially delicate through to larger, heavier parts.


    Where required, we can introduce a variety of different additives, such as anti-microbial, anti-static, UV stabiliser, siloxanes and colouring agents.

    Other services

    We can offer a range of additional, related services. Please refer to our additional services page.

    Injection Moulding
    Injection Moulded Parts
    Dudley Associates - Injection Moulders

    “Datum Electronics has been dealing with Dudley Associates Ltd for many years. John is always very co-operative and willing to help. The quality of the product is always excellent and is delivered on-time, every time.”

    Amelia Lucas, Purchasing Co-ordinator at Datum Electronics

    “We were working with Dudley on a complex component that also involved another suppler, almost at the end of the development cycle the 2nd suppler let us down. John and the team at Dudley stepped in to rescue the project showing impressive technical ability and perseverance and leading us to a great end result.”

    Will Penfold, Technical Director at Kelda Technology

    I just wanted to share a quick note from myself and the team and let you know that we were delighted that you could meet both the costs and perhaps, more importantly, the timescale we had to work with. Very glad we decided to work with you again. It’s also worth mentioning that the support and advice that Dudley Associates provided to our design team while transitioning from their concept to the final tooling has been fantastic.”

    Tony Rainbow, Managing Director at Falcona Solutions

    “We have worked with Dudley Associates since 2009 on a variety of projects. Dudley Associates have always completed our work to a high standard and have been able to assist with the design and manufacture in an efficient, professional and timely manner. We look forward to our continued partnership with Dudley’s!

    Cogent Technology

    “Dudley Associates has been an important supplier for Palintest for many years, helping us to meet project requirements on time, on budget and within specification. The customer service from the team is excellent and they always go the extra mile to find the right solution. Thanks to everyone involved.”


    “For the last 10 years Dudley Associates been considered a highly valued resource for the realisation of our moulded critical components, the expert advice in the final design & tooling we’ve always received and UK based precision engineering continues to provide us with the added assurance that our projects will complete successfully and on time.”

    Managing Director of a Medical Equipment Supplier

    “We first approached Dudley to manufacture injection mould tools for us as we thought they offered excellent quality at a competitive price, and we were not disappointed. The tools are of excellent standard and delivered on time. Having had trouble free tools delivered, we now also take advantage of their in-house moulding facilities for small production run which again were completed on time without any problems.”

    International Fishing Equipment Manufacturer and Supplier

    How it Works

    Our bespoke plastic injection moulding service is designed to create your perfect components in the most efficient way – saving you both time and money.


    There’s no one size fits all solution to plastic injection moulding. This is why we thoroughly discuss your exact requirements and suggest the best course of action.


    We’ll use our vast Mouldshop and unrivalled expertise to create your bespoke Moulds. We can use a variety of materials from ABS and acrylics to nylons and polycarbonates.


    Once your product is complete, we’ll thoroughly check it according to our high standards before delivering it to you using our dedicated courier partners.