Injection Moulding Machine for Micro-Moulded Parts
Micro-moulded parts are made on injection moulding machines with very small, accurately metered shots, often in hot runner or short runner moulds, from LCP, POM, PA or PC. The deciding factors are shot weight against screw size, runner weight compared with the part and fine control of injection stroke. Accurate metering matters more than clamp force.
For these parts, selection centres on the smallest practical screw, a short runner and close control of shot size. Pratishna Engineers supplies vertical and small horizontal injection moulding machines for small precision parts and can recommend a configuration, or say when a part needs a dedicated micro machine.
Moulding Micro Parts?
Share your part drawing, material, part weight and cavity count, and Pratishna Engineers will advise on a suitable machine.
Machine Requirements for Micro-Moulded Part Production
Micro parts weigh far less than a normal shot, so the machine and mould are judged on these points:
- Smallest screw diameter available for the shot weight
- Short residence time to stop LCP and POM degradation
- Hot runner or very short runner to cut runner weight
- Fine control of injection stroke and holding pressure
- Steady mould temperature for tiny features and thin walls
- Clean moulding area where medical or optical buyers require it
Recommended Machine for Micro-Moulded Parts
Small precision parts, especially those moulded around pins or contacts, suit the Vertical PV Series (40-55 T) or Vertical PVDL Series (40-80 T), with inserts loaded by hand or robot. The E Series (75-180 T) suits multi-cavity moulds of small parts. Parts whose runner would outweigh the part many times are reviewed case by case first.
Not Sure Which Machine You Need?
Send your part drawing and weight so the shot can be checked against the barrel.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
- End-to-End Technical Support
- Industry-Specific Solutions
- Machine Lifecycle Support
Injection Moulding Machine Buyer Resources
Download practical resources to help you select, size and specify the right machine.
Vertical Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, insert type and loading method, projected area, number of cavities, plastic material, required clamping force, shot / injection capacity, mould dimensions, production quantity, cycle time and automation requirement.
Download PDFPDF · 265 KB
How to Calculate Clamping Force for an Injection Moulding Machine
A clear methodology that explains how clamping force is calculated, covering projected area, injection pressure, safety factor, number of cavities and material considerations.
Download PDFPDF · 363 KBElectrical & Electronics Components & Machine Guide
A guide to Electrical & Electronics components, covering switches, sockets, MCB and RCCB housings, plug tops, meter boxes, solar connectors and electronic housings. It explains flame-retardant and glass-filled grades, thermoset parts, dimensional control, and how to match each part to a suitable machine.
Download PDFPDF · 202 KB
FAQs / Buyer Questions
Points that come up when buyers ask about very small parts.
Which Injection Moulding Machine Is Used to Make Micro-Moulded Parts?
Parts with the very smallest shots run on dedicated micro machines with plunger or scaled-down screw units. Small precision parts with heavier shots can run on small vertical machines or the E Series, depending on runner and cavities.Why Does Runner Weight Matter So Much for Micro Parts?
On a conventional machine the runner can weigh many times more than the part. Melt then sits in the barrel longer and can degrade, so a hot runner or very short runner keeps the shot close to part weight.Can Micro Parts Be Moulded Around Metal Pins or Contacts?
Yes. Small pins and contacts are often placed in the mould and overmoulded on vertical machines, where gravity holds the insert in place. Insert support decides whether thin walls fill without shifting it.
How Are Tiny Features Filled Without Short Shots?
Mould temperature, venting and injection speed matter more than pressure. Fine vents at the end of fill let trapped air escape, and a warmer mould keeps melt moving into thin sections before it freezes.Can Pratishna Recommend a Machine for My Micro-Moulded Part?
Yes. Share the part drawing, material, part and runner weight, cavities, any inserts and monthly volume. Pratishna Engineers will say whether a listed machine suits the part or a dedicated micro machine is needed.Does the Machine Suit Other Electronic Parts Too?
Yes. Small vertical and horizontal machines can also mould electronic connectors, wearable components, fan regulator knobs and coil bobbins, subject to the mould and shot size.
Technical Disclaimer
Disclaimer: The information provided in this webpage is for general informational and educational purposes only. It is based on technical references and industry information available at the time of preparation and may be subject to change. It does not constitute engineering, technical, commercial or professional advice, nor does it constitute a quotation, specification, warranty or contractual commitment by Pratishna Engineers.
Actual injection moulding machine and process requirements vary according to the component design, material, mould, production volume, machine configuration and operating conditions. The information, examples, calculations and recommendations provided should be independently evaluated and verified for the specific application before making any equipment, process or production decision. Information obtained from third-party sources remains subject to the accuracy and limitations of those sources.
Limitation of Liability: Pratishna Engineers makes no representation or warranty, express or implied, regarding the completeness, accuracy or suitability of the information for any particular application. To the extent permitted by applicable law, Pratishna Engineers shall not be liable for any loss, damage, cost or consequence arising from reliance on or use of the information contained in this webpage. Final machine selection, configuration and application suitability should be confirmed with Pratishna Engineers based on complete and accurate project requirements.
Talk to Our Engineers
Planning a New Injection Moulding Project?
Share your component, material, mould and production target. Our engineering team will help you identify the right machine configuration.
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