Injection Moulding Machine for Lotion and Airless Pump Components
Lotion and airless pump components such as actuators, pistons, stems and housings come off horizontal injection moulding machines running multi-cavity moulds, from PP, POM, HDPE or LDPE. Part size and cavity count set a modest tonnage, while dimensional repeatability between cavities and shots decides whether the assembled pump passes its leak test.
For pump parts, machine choice is about holding tolerance shot after shot more than clamp force. Pratishna Engineers offers hybrid and horizontal injection moulding machines suited to pump component production and can recommend a configuration for each part of your pump.
Moulding Pump Components?
Share your pump drawings, part list, materials and cavity plan, and Pratishna Engineers will recommend a suitable machine.
Machine Requirements for Pump Component Moulding
A pump is a set of small mouldings that must seal and slide against each other. Points to check:
- Repeatable shot size for tight bore and stem tolerances
- Stable mould temperature so shrinkage stays the same
- Round, even-walled housing bores without core deflection
- Flash-free sealing lips on LDPE pistons and gaskets
- POM grades for sliding and sealing members
- Balanced hot runner across every cavity in the mould
Recommended Machine for Lotion Pump Components
Pump parts are small, so tonnage is modest and tolerance capability matters more. Hybrid PH Series (120-140 T) machines, with electric injection, suit many housing and piston moulds where shot repeatability decides yield. Smaller tools fit the E Series (75-180 T), while high-cavity housing moulds move up to the C or H Series.
Not Sure Which Machine You Need?
Share your pump part list and tolerances for a machine 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
- 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 KBCosmetics & Personal Care Components & Machine Guide
A guide to Cosmetics & Personal Care components, covering compacts, lipstick cases, cream jars, caps, pumps, combs, brushes and hair accessories. It explains cosmetic surface finish, thick-wall clear parts, precise mating components, and how to match each part to a suitable machine.
Download PDFPDF · 203 KB
FAQs / Buyer Questions
Questions pump component makers raise before a trial.
Which Injection Moulding Machine Is Used to Make Lotion Pump Components?
Pump parts sit in the low tonnage range. Hybrid PH or E Series machines suit actuators, stems and pistons, while housing moulds with many cavities may need the C or H Series for platen space.Why Do Pumps Fail the Leak Test?
Leaks usually trace back to small dimensional changes: an oval housing bore, a piston lip with flash, or shrinkage drift between cavities. Steady melt and mould temperature and a balanced runner keep every part within tolerance.Which Materials Are Used in an All-Plastic Pump?
POM is used for sliding and sealing members, PP for housings, stems and actuators, and PP or PE for springs and gaskets. All-plastic designs avoid the metal spring and ball used in standard pumps.
How Is Core Deflection Avoided on Pump Housings?
Pump housings have long, thin cores for the cylinder bore. Even wall thickness, gating that fills evenly around the core and a supported core tip stop the core from shifting, which would leave an oval or tapered bore.Can Pratishna Recommend a Machine for My Lotion Pump?
Yes. Share drawings of each pump part, materials, tolerances on bores and sealing lips, mould dimensions, cavity count and monthly volume, and Pratishna Engineers will recommend a suitable machine.Does the Machine Suit Other Cosmetic Dispensing Parts Too?
Yes. Similar machines can mould cosmetic bottle caps and flip-tops, roll-on balls, ball seats and collars, and deodorant stick elevators and screws, 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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Planning a New Injection Moulding Project?
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