Lotion Pump Leakage: Causes and Solutions
Lotion Pump Leakage: Causes and Solutions
Leakage is a core quality issue for lotion pumps, which not only impairs user experience but also risks content deterioration, packaging damage, and direct harm to brand reputation. This problem is often closely linked to multiple links such as design, materials, and craftsmanship.
Structurally, seal system failure is the primary cause. Lotion pumps rely on silicone gaskets, O-rings, etc., to achieve multi-stage sealing. If gaskets have size deviations, material aging, or assembly misalignment, the contact surfaces will fail to seal tightly, leading to leakage. Insufficient precision in the fit between the pump chamber and piston is also critical: excessive gaps may cause liquid backflow, while overly tight fits can exacerbate seal failure due to frictional wear.
Material selection also hides risks. Poor-quality plastics are prone to deformation in high or low temperatures, loosening the pump structure. Metal springs, if inadequately anti-corrosive, may rust and scratch seals, creating leakage channels. Additionally, content compatibility must be prioritized—acidic or oily liquids may corrode gaskets and damage sealing performance.
Production process control is equally important. Unremoved burrs from injection molding can scratch sealing surfaces; surface treatments like electroplating or spraying, if covering sealing areas, may also compromise sealing effectiveness.
Addressing leakage requires systematic solutions: optimize seal structures with stepped leak-proof designs; use aging-resistant silicone and high-strength engineering plastics to ensure compatibility with contents; introduce automated assembly equipment to improve seal installation precision; and implement strict quality inspections such as high-pressure testing and temperature cycle testing. Only by controlling the leakage rate below 0.1% can product quality be truly guaranteed.
