Injection Moulding Machine for Floor Drains and Nahani Traps
Floor drains and nahani traps are moulded in PP, ABS or uPVC on horizontal injection moulding machines, with the trap body and grating in separate moulds. The flat slotted grating sets clamping force through its projected area. Even cooling across the grating matters most, since warp leaves a cover that rocks once tiled in.
For floor traps, machine selection weighs grating area and slot count against clamp, and trap body mould height and cores against platen size. Pratishna Engineers supplies horizontal injection moulding machines for floor drain production and can recommend a configuration for both moulds.
Manufacturing Nahani Traps?
Share your trap body and grating sizes, material and mould plan, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Floor Drain and Nahani Trap Moulding
A floor trap has to hold its water seal and sit flat under tile, which leads to these machine needs:
- Clamping force based on the full grating area
- Balanced fill across many thin grating slots
- Even mould cooling so gratings eject flat
- Core pulls for side inlets on multi-inlet trap bodies
- Mould height and stroke for deep trap bodies
- PVC-suited screw and barrel for uPVC trap bodies
Recommended Machine for Floor Drains and Nahani Traps
Small round gratings and compact trap bodies fit the E Series (75-180 T). Square gratings with many slots load the clamp across a wider flat face and usually move up to the C Series (140-320 T). Larger multi-inlet trap bodies and multi-cavity grating moulds suit the H Series (120-350 T).
Not Sure Which Machine You Need?
Share your floor drain body and grating drawings for a machine suggestion.
Why Choose Pratishna Engineers?
- Application-Based Machine Selection
- In-House Engineering & Manufacturing
- Multiple Machine Series
- Production-Focused Solutions
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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 KBSanitary & Bathroom Fittings Components & Machine Guide
A guide to Sanitary & Bathroom Fittings components, covering taps, bib cocks, angle cocks, health faucets, showers, cistern fittings, traps and drains. It explains PTMT, POM, ABS and UPVC, leak-free threads and seats, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Questions from makers of floor drains and nahani traps.
Which Injection Moulding Machine Is Used to Make Floor Drains and Nahani Traps?
Gratings and trap bodies are sized separately. Small ones sit on the E Series, while wide slotted gratings and multi-inlet bodies often need the C or H Series because of flat area and mould size.Why Do Floor Drain Gratings Warp After Ejection?
Uneven cooling between the slotted centre and the solid rim makes one area shrink more. Balanced cooling, gates placed for even fill and enough cooling time before ejection keep the grating flat in its frame.Which Material Suits a Nahani Trap Body: PP, ABS or uPVC?
uPVC trap bodies match uPVC drainage pipe and solvent joints. PP suits push-fit designs and stands up to floor cleaning chemicals. ABS suits gratings that need a hard, glossy face.
Can the Body and Grating Share One Mould?
Sometimes, as a family mould, when shot weights and wall sections are close. More often they run in separate moulds, because their fill, cooling and clamp needs differ and sharing a tool would compromise one of them.Can Pratishna Recommend a Machine for My Floor Drain or Nahani Trap?
Yes. Share drawings or samples of the body and grating, material, part weights, mould dimensions, core layout and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Sanitary Ware Parts Too?
Yes. Similar machines can mould bottle traps, waste couplings, SWR drainage fittings and overhead shower plates, 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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