Plastic Injection Moulding Exeter
Reliable Plastic Injection Moulding for Exeter’s Engineering & Manufacturing Sectors
Stephens Plastic Mouldings supports Exeter and Devon-based businesses with full-service plastic injection moulding. From prototyping to production and post-processing, we offer a streamlined service that delivers high-performance plastic components quickly and efficiently.
As an ISO 9001-certified plastic injection moulding company, we help product developers, manufacturers, and engineers throughout Exeter meet their goals – whether you’re creating a custom enclosure for electronics or need repeatable production for consumer products.
Built for Exeter’s Growing Innovation Economy
Exeter has emerged as a centre for green technology, smart infrastructure, and advanced electronics. That’s why our injection moulding services are tailored to support both early-stage innovation and industrial production.
We deliver technical precision, competitive lead times, and flexibility – ensuring your parts meet both performance and commercial standards.
Stephens Plastic Mouldings is trusted across the South West for our ability to turn ideas into market-ready products – on time, on budget, and on spec.

Injection Moulding Services Available in Exeter
We provide an end-to-end solution for businesses in Exeter looking to scale with plastic. Whether you need a prototype or 100,000 finished parts, our team is ready to support every step of the process.
We design and manufacture custom steel and aluminium mould tools in-house, optimised for cost, cycle time, and part performance.
Our machinery accommodates various part sizes and polymers, including ABS, polypropylene, nylon, polycarbonate, and more. Tight tolerances and consistent quality are standard.
We help refine your part’s geometry, tolerances, and material choice to enhance performance, mouldability, and unit cost savings.
We offer short-run and prototype moulding for product validation, concept testing, or niche part applications - without high MOQs.
In-house capabilities include ultrasonic welding, machining, pad printing, insert moulding, and component assembly, ensuring you get a finished, functional part.
With our central UK facility and efficient logistics network, we can provide dependable delivery schedules across Devon and the South West.
Why Choose Stephens Plastic Mouldings?
1. A Supplier That Grows With You
From small startup batches to long-term production, we adapt to your pace and help your product scale without compromising quality.
2. Everything Under One Roof
Tooling, moulding, finishing, and assembly are all completed in-house, which reduces delays and ensures full process control.
3. Quality-First Approach
Our ISO 9001-certified system guarantees consistent results, documented process control, and full part traceability.
4. Dedicated Support
You’ll work directly with one point of contact, backed by a responsive team who understands your technical and commercial requirements.
5. Material Expertise
Need a flame-retardant, UV-resistant, or medical-grade polymer?
We’ll help select the right material for your project.
The Power of Plastic Injection Moulding
Plastic injection moulding is ideal for high-volume production and high-precision components. In this process, molten thermoplastic is injected into a custom-designed mould, rapidly cooled, and ejected as a finished part—ready for use or assembly.
Benefits include:
- Excellent repeatability.
- Low per-unit costs at scale.
- Design freedom for intricate details.
- Fast production cycles.
- Broad material compatibility.
Stephens Plastic Mouldings offers all this with engineering input and quality assurance built in from day one.
FAQs – Plastic Injection Moulding Exeter
Yes. We manufacture parts for regulated sectors and follow strict documentation protocols. We also work with medical-grade materials where required.
Absolutely. Our DFM (Design for Manufacture) engineers will assess your CAD files and make recommendations to improve tooling life, part performance, and cost-efficiency.
Tooling typically takes 3 - 5 weeks. Initial production runs are usually delivered within 2 - 3 weeks depending on part complexity and volume.
We design and manufacture all tools in-house. If you already have a tool, we can assess and use it after testing and approval.
No. We support low-volume runs as well as large-scale production, making our services ideal for prototypes, niche markets, or initial product launches.
Your Injection Moulding Partner
At Stephens Plastic Mouldings, we combine technical experience, flexibility, and personal service to help businesses in Exeter develop better plastic components.
We don’t just supply parts – we help you build better products.
Contact us today to discuss your next injection moulding project:
Call 0121 544 5808 OR Email sales@stephensplasticmouldings.co.uk.
We’d Love to Hear From You, Get In Touch With Us!
Please contact us if you would like to receive a quotation and/or to find our more about how we can provide the service you are looking for.