Mitre Plastics
Moss Way, Preston Farm Industrial Estate, Stockton On Tees, TS18 3TF
About
Mitre Plastics, a family-owned UK contract manufacturer based in Stockton-on-Tees, leverages over 45 years of experience in plastic injection moulding and toolmaking from a 40,000 sq.ft. facility equipped with 30 machines (25-1500 tonne clamp capacity) operating 24/7. They mould a range of polymers into components from 1g to 6kg, serving sectors including automotive (as a tier-2 supplier), domestic goods, electronics, and packaging, with comprehensive project management from design to manufacture, supported by an engineering team and offering services like printing, insert-moulding, painting, assembly, and welding. Holding IATF 16949 and ISO 9001:2015 certifications, Mitre Plastics differentiates itself by offering Tier 1 services at Tier 2 prices, underpinned by reliable supply, excellent technical support, and the agility of a self-sufficient, family-owned structure enabling quick decision-making and investment in new plant.
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Mitre Plastics is a well-established, family-owned plastic injection moulding and toolmaking company based in Stockton-on-Tees, UK, with over 45 years of experience. Operating from a substantial 40,000 sq.ft. facility, the company employs 100 staff and utilizes 30 injection moulding machines with clamp capacities ranging from 25 to 1500 tonnes, running 24 hours a day.
The company specialises in moulding a variety of polymers, including PP, ABS, Nylon, and Polycarbonate, to produce components weighing from 1 gram to 6 kilograms. Mitre Plastics serves diverse industries, with a significant focus on the automotive sector where they act as a tier-2 supplier, alongside domestic goods, electronics, and packaging. Their capabilities extend to comprehensive project management from design to manufacture, supported by a specialist engineering team and offering added-value services such as printing, insert-moulding, painting, assembly, and welding.
Mitre Plastics holds IATF 16949 and ISO 9001:2015 certifications, positioning themselves as offering Tier 1 services at Tier 2 prices. Key differentiators include reliable supply, excellent technical support, and a low-risk, self-sufficient operation, facilitated by their family-owned structure which allows for quick decision-making. They are also open to investing in new plant to meet evolving customer requirements.
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Press fleet5
- Moulding processes
- Injection moulding
- Smallest press (t)
- 25
- Largest press (t)
- 1500
- Press count
- 30
- Large-format (≥1,000 t)
- Yes
Moulding capability5
- Process specialisms
- Insert moulding
- Min part weight (g)
- 1
- Max part weight (g)
- 6000
- Scientific moulding
- Yes
- Decoration
- Painting
Production3
- Batch tiers
- Prototype
- Handles prototypes
- Yes
- Handles volume production
- Yes
Prototyping & NPD1
- DFM support
- Yes
Tooling2
- Tool services
- Design & build
- Tooling origin
- In-house (UK site)
Quality & inspection3
- FAI methodology
- PPAP
- Inspection stages
- First-off, In-process, Patrol
- SPC / Cpk
- Yes
Certifications & accreditations2
- ISO 9001
- Held
- IATF 16949
- Held
Identity & contact1
- Industries served
- Automotive, Electronics & electrical, Domestic goods, Packaging, Food & beverage
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Press fleet: Press brands · Premium press fleet · All-electric presses
Moulding capability: Micro moulding capable · Cleanroom class · Certified cleanroom · Joining methods · Product specialisms
Materials: Material modifiers · Recycled content offered · Recycled feedstock types · ESD-capable
Prototyping & NPD: Prototyping routes · Prototypes in final material · Prototyping offered · Product-design service · Mould-flow simulation
Tooling: In-house toolroom · Tool trials offered
Production: Runs 24/7 · Bridge production
Assembly & finishing: Assembly offered · Assembly capabilities
Machining: Contract machining
Quality & inspection: CMM · Automated vision QC
Certifications & accreditations: ISO 14001 · ISO 13485 · BRCGS Packaging · AS9100 · Cyber Essentials · Food-contact compliance · UL listing · Trade bodies