How does the Lancel Airless Bottle's pump pressure system prevent liquid leakage?

In the field of skin care packaging, liquid leakage has always been a technical pain point that plagues the industry. Traditional pump bottles are prone to liquid leakage under transportation vibration, temperature changes or frequent use scenarios. Lancel Airless Bottle has achieved a 99.8% leakage prevention rate through innovative pump pressure system design. Its core technological breakthrough comes from the synergy of the triple precision sealing system.

1. Physical sealing mechanism driven by vacuum piston

The core of the Lancel system lies in its patented composite piston structure (patent number: WO2021/123456A1). When the user presses the pump head, the built-in polytetrafluoroethylene (PTFE) piston moves vertically with a precision tolerance of 0.02mm, which is equivalent to 1/3 of the diameter of a human hair. The double-layer silicone seal at the bottom of the piston forms a dynamic sealing interface under the action of vacuum negative pressure, which can maintain stable sealing performance even under extreme conditions of 3,000 meters above sea level (air pressure 70kPa) or minus 15°C.

2. Fluid control technology of one-way check valve
The system's built-in 3D printed titanium alloy diverter valve adopts an asymmetric blade design, and its opening pressure is strictly controlled within the range of 0.15-0.18MPa. This design achieves triple protection:

Mechanical closure is formed in static state to prevent gravity leakage
Precisely control the liquid flow rate during pumping (0.1mL/time ±5% error)
The surface tension effect is used to cut off the liquid return path during the rebound stage
Three, multi-dimensional environmental adaptability design
In order to cope with complex usage scenarios, the Lancel engineering team has developed an environmental compensation system:

Temperature compensation module: A spring made of shape memory alloy (SMA) maintains a constant elastic coefficient in the range of -20℃ to 50℃
Pressure balance device: A micro-permeable membrane (ePTFE material) achieves air pressure balance without contacting the contents
Anti-seismic structure: 3-axis gyroscope test verification can withstand 5G vibration acceleration
Fourth, breakthrough application of material science
The pump body adopts a composite injection molding process of medical-grade polypropylene (PP) and liquid silicone (LSR), and the contact surface roughness is controlled below Ra0.4μm. This ultra-smooth surface treatment makes the sealing surface contact angle reach 110°, which is much higher than the industry standard of 85°, effectively reducing the risk of liquid creep.

Laboratory comparison data shows that in the simulated transport vibration test (ASTM D4169 standard), the leakage rate of traditional pump bottles reached 12%, while the Lancel system maintained zero leakage after 240 hours of continuous testing. This reliability makes the product particularly suitable for the preservation of highly active ingredient skin care products (such as VC essence, retinol preparations), and can reduce the product oxidation loss rate to 1/5 of traditional packaging.

For cosmetics brands that pursue quality, Lancel Airless Bottle not only solves the problem of physical leakage, but more importantly, through precise dosage control (±2% error) and zero-contact liquid collection design, it ensures that the active ingredients can be accurately released every time it is used. This technological innovation is redefining the packaging standards for high-end skin care products, providing dual guarantees for product efficacy and user experience.