Injection Moulding Machine for Battery Containers
Battery containers, the cell boxes of lead-acid batteries, are moulded on horizontal injection moulding machines from battery-grade PP copolymer, with FR-ABS for some sealed designs. Box depth, opening stroke and shot weight decide machine size. Filling the long, thin cell partitions evenly is the critical point, since a short shot or thin wall can leak acid.
Selecting a machine for battery containers means checking daylight, ejector stroke and injection rate against the box height and partition walls. Pratishna Engineers supplies horizontal injection moulding machines for deep containers and can recommend a setup for your battery size.
Manufacturing Battery Containers?
Share the container size, material and mould details, and Pratishna Engineers will recommend a machine.
Machine Requirements for Battery Container Moulding
A battery container is a deep box divided into cells, and it must stay leak-tight under acid and vibration. Points to check:
- Long opening stroke and daylight for a deep core
- Fast injection to fill thin cell partition walls
- Strong core cooling to stop core shift and uneven walls
- Venting at partition tops to avoid short shots
- Flat top rim for heat sealing to the lid
- Ejector stroke and force for a tall, straight-walled box
Recommended Machine for Battery Containers
Two-wheeler battery containers are shorter and can run on the C Series (140-320 T). Car battery boxes are taller and heavier, so the H Series (120-350 T) is often needed for opening stroke and shot weight. Larger truck and tractor containers that exceed this range are discussed on request.
Not Sure Which Machine You Need?
Send your battery container mould size and part weight for a recommendation.
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 KBAutomotive Components & Machine Guide
A guide to Automotive components, covering connectors, clips, lamp lenses, battery containers, two-wheeler panels and EV parts. It explains engineering plastics and glass-filled grades, cosmetic surfaces, mould size, and how to match each part to a suitable machine.
Download PDFPDF · 223 KB
FAQs / Buyer Questions
Questions battery makers commonly bring up when sizing a container machine.
Which Injection Moulding Machine Is Used to Make Battery Containers?
The battery size points to the machine. Motorcycle battery boxes fit medium horizontal machines, car containers need a larger clamp and longer stroke, and heavy-vehicle containers may go beyond this range.Why Is PP Copolymer Used for Battery Containers?
Battery-grade PP copolymer resists sulphuric acid, keeps its impact strength in cold weather and heat seals well to the lid. FR-ABS is used for some sealed or stationary batteries where flame retardancy is specified.What Causes Uneven Wall Thickness in Battery Containers?
The long cores can deflect under injection pressure if the melt reaches one side first, which thins one wall. Balanced gating, a stiff core and good core cooling keep the walls even.
How Much Opening Stroke Does a Battery Container Mould Need?
The machine needs enough opening stroke to clear the full container height off the core, plus space to remove the part. Mould height and box depth should be checked before choosing the machine.Can Pratishna Recommend a Machine for My Battery Container?
Yes. Share the container drawing or sample, material, part weight, mould dimensions, cavities and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Battery Parts Too?
Yes. Similar machines can mould battery covers and lids, while smaller battery terminal covers and vent plugs run on compact machines. EV battery pack housings are assessed separately on their own 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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Planning a New Injection Moulding Project?
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