Injection Moulding Machine for Jerry-Can Caps
Jerry-can caps are made on horizontal injection moulding machines, in multi-cavity moulds, from HDPE or PP, with LDPE for softer seals. Cavity count, shot weight and how the thread is released, by stripping or an unscrewing mould, decide machine size. Clean tamper band bridges that break by hand but hold in transit matter most.
Cap machines are chosen for injection speed, shot repeatability across cavities and mould space for unscrewing cores. Pratishna Engineers supplies horizontal injection moulding machines for jerry-can closures and can recommend a set-up to suit the cap type and cavity count.
Manufacturing Jerry-Can Caps?
Share the cap drawing, neck size, cap type and cavity plan, and Pratishna Engineers will suggest a suitable machine.
Machine Requirements for Jerry-Can Cap Moulding
A jerry-can cap has to seal, show tampering and survive transport, so the machine needs:
- Repeatable shot weight across every cavity of the mould
- Fast injection to fill thin tamper band bridges
- Mould height and stroke for unscrewing thread cores
- Gentle ejection that does not tear the band
- Thread and seal face held true for wad seating
- Steady melt temperature for HDPE and PP caps
Recommended Machine for Jerry-Can Caps
Jerry-can caps are small, so the E Series (75-180 T) suits most cap moulds by cavity count and thread release. Higher-cavity hot runner tools, or unscrewing moulds that need more mould space, move to the H Series (120-350 T). Each cap variant in the family has its own tool and is sized separately.
Not Sure Which Machine You Need?
Send your cap drawing and cavity plan for a machine suggestion.
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
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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 KBIndustrial Packaging Components & Machine Guide
A guide to Industrial Packaging components, covering paint pails, lube containers, jerry-can caps, drum bungs, lids, spouts and dispensing taps. It explains HDPE and PP, leak-free closures, tamper-evident features, mould height, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Points jerrycan and chemical packaging makers ask about cap moulding.
Which Injection Moulding Machine Is Used to Make Jerry-Can Caps?
Most jerry-can cap moulds fit the E Series, with size set by cavity count and the thread release method. Larger neck caps and high-cavity tools may need the H Series. The can body itself is blow moulded.Does Each Cap Variant Need Its Own Mould?
Yes. Vented caps, degassing valve caps, child-resistant caps, withdrawable spout caps and plug caps share the neck finish but differ inside, so each needs its own tool and machine check.How Is the Tamper-Evident Band Moulded?
The band is moulded with the cap and joined by thin bridges. Short shots or flash on the bridges change the break force, so even filling, venting at the band and careful ejection decide whether it breaks cleanly.
Is the Cap Wad or Liner Moulded In?
No. EPE or PE foam wads are fitted after moulding and form part of the seal. The seal face under the wad has to be flat and flash-free, or the cap leaks even with a good wad.Can Pratishna Recommend a Machine for My Jerry-Can Cap?
Yes. Share the cap drawing or sample, neck finish, cap type, material, cavity count, thread release method, mould size and output target, and Pratishna Engineers will suggest a machine.Does the Machine Suit Other Industrial Packaging Closures Too?
Yes. These machines also suit drum bungs, spouts and vented closures, dispensing taps and screw caps for lube and chemical bottles, depending on mould size and cavities.
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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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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