Precision injection moulding
From pellet to finished part. Discover how injection moulding works, how we work with your mould and which machines we use in Pelt to deliver your project.
Injection moulding
What is injection moulding?
In injection moulding, we melt plastic pellets and inject the molten material under high pressure into a steel mould: a tool with the exact shape of your part. Once cooled, the mould opens and releases a finished part. Then the next cycle begins.
Because every cycle is identical, injection moulding is the technique for large runs with high dimensional accuracy. In Pelt, we mould parts from 2 grams to 9 kilograms (PP).
Where do you find injection-moulded parts?
More places than you might think. A selection of what comes off our machines in Pelt every day:
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Parts for heating, lighting and electronics
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Construction and flooring parts
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Packaging with in-mould labels
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Folding crates, storage boxes and industrial crates
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Toys, such as the well-known blue sandpit shell
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Technical parts for machines and stairlifts
Packaging and boxes
Precision inserts and mould parts
Technical parts in series
Moulds
Your mould or ours
Every injection-moulded product needs a mould. Plascobel works with moulds you supply, or designs and builds them with you. In Pelt we have our own mould workshop and a mould vault where your mould is stored safely.
You already have a mould
Already working with a mould, with us or elsewhere? Then we take it over and run it on our machines.
- Technical inspection and, if needed, maintenance of your mould
- Trial injection (first out of tool) before series production
- Fast start-up, with no new investment in tooling
We develop your mould
Starting from an idea or a drawing? Then we guide you from design to first series.
- Defining product specifications, material choice and quality level
- Design study and detailed 2D and 3D drawings
- Prototype, mould drawing and mould construction
- Test series, your approval and start of production
How does it work?
From granule to part in six steps
An injection moulding cycle takes from a few seconds to a few minutes, and repeats itself thousands of times with the same precision.
Drying and dosing
Plastic granules are dried and, where needed, mixed with colourant or additives.
Melting
A screw in the heated barrel melts the granules into a homogeneous, liquid mass.
Injection
Under high pressure, the molten plastic fills the mould cavity in a matter of seconds.
Holding pressure and cooling
The machine maintains pressure while the part cools and takes its final shape.
Ejection
The mould opens, ejectors or a robot remove the part. The next cycle starts.
Finishing and inspection
Dimensional and visual inspection, decoration or assembly if required, and packaging for delivery.
Our machine park
The machines behind every part
Hover over an image to learn more. Pelt has 27 injection moulding machines from 120 to 2300 tonnes. For projects that need more, we can rely on the other Euronyl Plastics Group sites.
Injection moulding machines
27 machines from 120 to 2300 tonnes clamping force, for parts from 2 g to 9 kg (PP). Our 2300-tonne machine is the largest in the group.
Robots and automation
Robots remove the parts, place IML labels and inserts in the mould and stack the parts.
In-mould labelling
The label is moulded in. Up to six labels per box, in photo quality and with no labelling step afterwards.
Moulds
Our own mould workshop and mould vault in Pelt, for maintenance, repair and secure storage of your moulds.
Central material supply
800 tonnes of silo capacity. Pellets are dried centrally and fed automatically to every machine.
Assembly and logistics
Inline welding, laser coding and manual assembly. 15,000 m² warehouse, ERP and EDI, just-in-time and just-in-sequence deliveries.
Frequently asked questions
Questions about injection moulding
Can’t find the answer to your question here? You will find more answers on our FAQ page. Or feel free to contact us, we are happy to help.
What is the minimum and maximum part weight you can mould?
We mould parts from 2 grams to 9 kilograms (PP), on 27 machines from 120 to 2300 tonnes clamping force.
Which injection moulding techniques does Plascobel offer?
Can you work with a mould I already have?
Do you also produce in a cleanroom?
Request a quote
Have a part in mind?
Send us your drawing or idea. Our engineers will assess its manufacturability and send you a tailored quote.