Injection Moulding Machine for PVC Trunking Accessories
PVC trunking and raceway accessories such as end caps, joints, bends, tees and corners are made on horizontal injection moulding machines from UPVC, PVC or PP, while the trunking body is extruded. Trunking size, cavity count and part depth set the machine. Fit and colour must match the extruded profile.
Machine choice for trunking accessories depends on the largest trunking size in the range and on PVC-suited processing. Pratishna Engineers supplies horizontal injection moulding machines for raceway accessory production and can recommend a configuration for your accessory moulds.
Moulding Trunking Accessories?
Share trunking sizes, accessory types, material and monthly volume, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Trunking Accessory Moulding
Accessories slide over or into the extruded trunking and its cover, so their fit decides how the installed run looks. The machine should support:
- PVC-suited screw and barrel with low shear
- Short residence time to stop PVC degradation
- Snap lips and fit held to the trunking profile
- Colour and gloss matched to the extruded trunking
- Undercut release by slides or stripper action
- Thin flat faces moulded without warpage or sink
Recommended Machine for PVC Trunking Accessories
Accessories for small and mini trunking are moulded on the E Series (75-180 T), often several cavities to a mould. Wider trunking sizes give larger bends, tees and corners with deeper cores and side actions, which need the larger C and H Series machines.
Not Sure Which Machine You Need?
Send your trunking size range for a machine plan.
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.
Horizontal Injection Moulding Machine Selection Guide
A step-by-step guide covering the key inputs needed to select the right machine: product weight, 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 Building Products Components & Machine Guide
A guide to Electrical Building Products components, covering conduit fittings, junction boxes, modular switches, plug tops, MCB housings, cable glands and terminal blocks. It explains flame-retardant grades, drying, dimensional control, and how to match each part to a suitable machine.
Download PDFPDF · 218 KB
FAQs / Buyer Questions
Questions raised by makers of trunking and raceway accessories.
Which Injection Moulding Machine Is Used to Make PVC Trunking Accessories?
For small trunking, the E Series handles most end cap and joint moulds. Bends, tees and corners for wide trunking are larger and deeper, so they are matched to the C or H Series.Is the Trunking Itself Injection Moulded?
No. The trunking body and cover are extruded as continuous profiles. Only the accessories that join, end or turn the run are injection moulded.How Do You Match Accessory Colour to the Trunking?
Use the same base compound family and colour standard as the extruded trunking. Steady melt and mould temperature keep shade and gloss even, and a purge between colours avoids streaks.
Why Does PVC Burn or Show Black Specks?
PVC degrades with heat and time. Excess shear, high barrel temperature or material left in the barrel during stops cause burning, so purge before shutdowns and size the shot to the barrel.Can Pratishna Recommend a Machine for My Trunking Accessories?
Yes. Share trunking sizes, accessory drawings or samples, material grade, part weights, mould dimensions, cavities and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Electrical Building Products Too?
Yes. Similar machines can mould conduit fittings, junction boxes, distribution board covers and cable saddles, subject to the mould.
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.
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