Overmoulding Services

Engineering-Led Overmoulding Services for Reliable, Integrated Components

Hi-Technology Group provides overmoulding services for manufacturers that require robust, repeatable components with integrated functionality. As an experienced overmoulding company, we support projects from early low-volume builds through to stable, long-term production, using controlled injection moulding processes and proven tooling strategies.

Our plastic overmoulding capability is delivered as part of a wider manufacturing service. We focus on engineering input, material compatibility, tooling design, and disciplined process control to help reduce assembly complexity and improve long-term product reliability.

Speak to our sales team to discuss your overmoulding requirements.

Enquire

What Is Overmoulding?

Overmoulding (or overmolding) is an injection moulding process where one material is moulded over another to create a single, integrated component. In plastic overmoulding, this typically involves moulding a thermoplastic over an existing plastic or metal substrate.

Overmoulding is commonly used to improve durability, functionality, or manufacturability, while reducing part count and secondary assembly operations. At Hi-Technology Group, overmoulding is delivered as a managed manufacturing process, integrated with our wider plastic injection moulding services.

Why Manufacturers Use Overmoulding

Overmoulding is selected when a single-material part cannot meet all functional or performance requirements.

Typical benefits include:

Improved mechanical strength and durability
Enhanced grip, protection, or surface performance
Reduced part count and simplified assembly
Improved protection around critical features and inserts
More consistent quality compared with multi-part assemblies

When applied correctly, injection overmoulding can improve product performance while simplifying manufacturing and long-term supply.

View Case Studies

Plastic Overmoulding and Insert Moulding Capabilities

Our overmoulding & insert moulding services support component designs where plastics are moulded over pre-formed substrates.

This includes:

Plastic-to-plastic overmoulding
Plastic overmoulding onto metal inserts
Overmoulding of functional inserts to improve strength and retention

We focus on material compatibility, interface performance, and dimensional control to ensure overmoulded components perform consistently throughout their lifecycle.

Learn More

Applications for Overmoulded Components

Medical & Healthcare

Overmoulding is commonly used for non-implantable medical components where integrated design, durability, and surface quality are important. Production is supported by ISO 9001 and ISO 14001 certified systems, with ISO 13485 certification planned.

Learn More

Commercial & Personal Safety

Overmoulded components are widely used in safety-related products where durability, secure assembly, and consistent manufacture are essential.

Learn More

Industrial and Technical Products

Overmoulding is used to improve the strength and functionality of housings, enclosures, and technical components while reducing assembly steps and part complexity.

Learn More

Engineering and Tooling Considerations for Overmoulding

Successful overmoulding depends on decisions made early in the design and tooling stages. Material behaviour, interface design, and tooling strategy all influence final part quality.

Our teams support overmoulding projects through:

Design for Injection Moulding (DFM) reviews
Guidance on overmoulding materials and compatibility
Tooling strategies designed for repeatable overmoulding
Consideration of tolerances, flow behaviour, and interface design

This engineering-led approach helps reduce risk and supports stable, repeatable production from first parts through to volume manufacture.

Supporting Overmoulding from Low to Higher Volumes

Many overmoulded components begin in lower volumes before progressing into higher-volume manufacture. Our production model is designed to support this progression without disruption.

We provide:

Low-volume and pilot overmoulding production
Tooling strategies that support future scaling
Scalable production for higher-volume requirements
Multi-site manufacturing across the UK and Europe to support continuity

Ongoing investment in facilities and equipment ensures resilience and capacity as production demands grow.

Quality Assurance and Process Control

Quality is built into our overmoulding operations from the outset.

Our approach includes:

ISO 9001 quality management systems
ISO 14001 environmental management practices
Documented process control and validation support
Inspection and traceability aligned to customer requirements

These controls ensure overmoulded components are produced consistently and responsibly over long production lifecycles

Why Choose Hi-Technology Group for Overmoulding Services?

Manufacturers choose Hi-Technology Group as their overmoulding manufacturer because we focus on long-term performance, not short-term output.

Engineering-led project support
Proven quality systems suited to regulated environments
Multi-site manufacturing capability
Long-term programme stability
Responsible manufacturing aligned with ESG principles

Our approach has been recognised by global partners, including 3M EMEA Supplier of the Year and BD Partner Supplier of the Year, reflecting consistent delivery and service excellence.

A Trusted Partner for Overmoulding

As a UK-based overmoulding company with established European operations, Hi-Technology Group supports overmoulding programmes from early development through to long-term production.

If you are evaluating overmoulding services or reviewing suppliers for overmoulded components, speak to our sales team to discuss your requirements and next steps.

Learn More About Us

Request A Quote

Overmoulding FAQs

What is plastic overmoulding?

Plastic overmoulding is an injection moulding process where a plastic material is moulded over another plastic or metal component to create a single, integrated part with improved functionality.

Do you provide overmoulding services in the UK?

Yes. We provide overmoulding services with UK-based sales and engineering support, backed by established European production capability.

Can you support both low-volume and higher-volume overmoulding?

Yes. We support overmoulding from early low-volume production through to scalable, higher-volume manufacture, using tooling strategies designed to support growth.

Do you support insert moulding as part of overmoulding projects?

Yes. Our overmoulding & insert moulding services support components where plastics are moulded over pre-formed inserts to improve strength and performance.