FAQs

Plastic injection moulding is a manufacturing process where molten plastic is injected into a mould to create custom parts and components. This method is commonly used for producing high-volume, consistent plastic products across industries like automotive, medical, and consumer goods.

Key benefits of plastic injection moulding include high production efficiency, low labour costs, minimal material waste, and the ability to produce complex and highly detailed parts in large quantities. This method also allows for flexibility in material and design options.

A wide range of thermoplastics can be used, including ABS, polypropylene (PP), polyethylene (PE), and nylon. Material choice depends on the specific application, including factors such as strength, flexibility, and heat resistance.

Lead times for plastic injection moulding vary depending on part complexity, mould design, and production volume. Typically, lead times can range from 4 to 12 weeks, including the design and production of the injection mould tool.

The process involves melting plastic pellets, injecting the molten plastic into a pre-designed mould, cooling the material to solidify, and ejecting the finished part. The cycle then repeats, allowing for mass production of identical parts.

When selecting a plastic injection moulding manufacturer, consider factors like industry experience, material expertise, lead times, production capacity, and quality assurance standards. Ensure the manufacturer can meet your specific project requirements and deliver high-quality parts on time.

Overmoulding is a process where two or more materials are moulded together. Typically, a softer material like rubber is moulded over a rigid plastic part, creating enhanced grip, durability, or aesthetic appeal. Overmoulding is often used for tool handles, grips, and electrical connectors.

The lifespan of an injection mould tool depends on the material it’s made from (e.g., steel or aluminium), the complexity of the design, and the number of cycles it undergoes. Steel moulds can last up to millions of cycles, while aluminium moulds are generally suitable for lower-volume production.

Injection moulding can achieve very tight tolerances, typically ranging between ±0.1mm to ±0.05mm, depending on the material and part design. Achieving precise tolerances is crucial for components used in industries like medical devices and aerospace.

Yes, recycled plastics can be used in injection moulding. Many industries are increasingly opting for sustainable materials like recycled PET or polypropylene to reduce environmental impact. However, the choice of recycled material will depend on the desired properties of the final product.

Injection moulding is ideal for mass production of identical parts, offering speed and cost efficiency for high-volume runs. In contrast, 3D printing is better suited for prototyping, low-volume production, and custom parts due to its flexibility and lower tooling costs.

Plastic injection moulding can have an environmental impact due to material waste and energy use. However, many manufacturers are adopting sustainable practices like using recycled plastics, reducing material waste, and optimising energy-efficient machines to mitigate this.

Vertical injection moulding machines provide greater flexibility for placing inserts, improved precision, and easier loading of components. They also save floor space since they typically have a smaller footprint. Additionally, vertical machines enable better part alignment, which is critical for overmoulding processes, and are ideal for applications where gravity assists in keeping inserts in place during moulding.

Micro injection moulding is a specialised form of injection moulding used to produce extremely small, high-precision plastic parts, often weighing less than a gram. This process is commonly used in the medical, electronics, and automotive industries for producing miniature components like microfluidic devices, tiny gears, or intricate medical implants.

Manumoulding is a manual form of plastic injection moulding typically used for small-scale production or prototype development. Unlike automated injection moulding, where machines handle most of the process, manumoulding involves manual operations such as manually clamping the mould, injecting the molten plastic, and removing the part. This process is often used when full-scale automation is not cost-effective, particularly in low-volume production or when complex mould designs are being tested.

Tooling for plastic injection moulding refers to the creation of the moulds (tools) that are used to shape molten plastic into finished parts. Tooling is a crucial part of the injection moulding process and includes both the mould core and cavity. The design and precision of the tooling directly impact the quality, durability, and cost of the final plastic parts.

We are able to offer various types of plastic moulding variants, including injection moulding, micro injection moulding, insert moulding, overmoulding, and manumoulding. Our array of options and experience means we have the capabilities to work with you to achieve your plastic moulding needs.

High-density polyethylene (HDPE)
Low-density polyethylene (LDPE)
Polypropylene (PP)
Polyethylene (PE)
Polyoxymethylene (POM, a.k.a. acetal)
Polyamide (PA, a.k.a. nylon)
Polybutylene terephthalate (PBT)
Polyethylene terephthalate (PET)
Polyphenylene sulfide (PPS)
Acrylonitrile butadiene styrene (ABS)
Polystyrene (PS)
Polycarbonate (PC)
Polyurethane (PUR or PU)
Polyetherimide (PEI, a.k.a. Ultem®)
Polysulfone (PSU)
PEEK (polyetheretherketone)

You have covered tooling turnaround times above 6-12 weeks as a guide.
Quoting time depends on complexity of part and in turn the time to look at tool design and DFM which is design for manufacture

Pricing is ultimately down to the number of impressions in the mould tool.
If tooling is a single impression part then it would be a much higher part price than if you were to have  4, 6 or 8 impression in the mould tool

No discounts – However the more impressions of the same part in a mould tool will reduce the piece part price

Generally 1000 off, however there is a set-up-charge if quantities ordered are not over a certain figure for example £500.00

No but customers could look at the part examples that I recently sent you various photographs of that you are working on for a gallery page