The pump core is indeed a critical and precision component within the lotion pumps we use, it is directly determining the quality and user experience of the finished pumps.
How much do you know about the important technical aspects for the pump core ?
Airless Pump Core
3- Key Technical Points in Pump Core Manufacturing
Material selection
| Component | Material | Key Performance Requirements |
| Spring | Stainless steelSUS304/SUS316 | Salt Spray Test: 96 Hours Without Corrosion （5%NaCl） |
| Piston seal ring | PTFE/Modified PE | Alcohol solvent resistance: Swelling rate < 1.5% |
| Valve ball | Glass/plastic/SUS316 | ball roundness error≤0.01mm |
| Pump body | PP/HDPE (food grade) | Resistance to essential oil migration (Ethyl Caprate test) |
Challenges in Pump Core Manufacturing
- Spring Winding: CNC machines control wire diameter to ±0.02mm, eliminating stress and temper deformation.
- Sealing Surface Machining: Piston rod mirror polishing(Ra ≤0.2μm),reduces friction coefficient.
- Ultrasonic Welding: Energy precision to ±5J prevents thermal deformation of plastic parts.
- Clean Assembly: Class 1000 cleanroom to prevent particulate contamination.
Compatibility and Reliability Testing
A- Compatibility Validation:
- 72-hour product immersion test (mass change rate ≤0.5%)
- Low-temperature (-20℃) / High-temperature (50℃) cyclic impact 3 times
B- Functional Reliability:
- 5,000 continuous presses (dispensing volume fluctuation ≤±10%)
- 24 hour inverted suspension with no leakage
4- Iteration and Development of Technology
Eco-friendly pump core structure
- Replaceable structure design: Achieves 80% plastic reduction (with replaceable refills)
- Metal free spring structure: Air-driven, it overcomes metal recycling complexities
Intelligent Pump Core Features
- Piezoelectric sensor for dosage tracking (provides refill alerts)
- Antimicrobial surface treatment (with Octenidine Hydrochloride)
