Vacuum Bottle-HS-017B

50ML-120ML Airless Bottle Travel Bottles Lotion Dispenser HS-017B is a packaging container that uses the principle of air pressure difference to achieve content access. It can effectively isolate the air, prevent oxidation and pollution, and is suitable for skin care products such as lotions and essences.
1. Core technical principles and structural design
Vacuum mechanism:
Air pressure drive principle: The low pressure in the bottle is formed through the one-way seal of the pump group, and the bottom piston is pushed up by atmospheric pressure to discharge the contents upward. The friction between the piston and the bottle wall needs to be precisely controlled-too tight will cause difficulty in pressing, and too loose will cause leakage.
Anti-pollution advantages: Completely isolate air contact, reduce oxidation and deterioration and microbial growth, reduce the need for preservatives, and extend the shelf life of the product.
Precise quantitative control:
After the pump group diameter stroke and elastic force parameters are fixed, the error of each press can be controlled within ±0.05ml, which is suitable for products that require precise dosage such as essence lotions.
Typical structural components:
Core components: outer cover pump group (including spring/valve), large piston bottom support of bottle body (with air vent at the bottom).
Classification:
Structural type: ordinary single bottle, composite double bottle.
Appearance design: cylindrical, square oval, with a capacity of 50ml-120ml.
2.Material and manufacturing process points
Mainstream material application
Plastic dominance: taking into account both lightweight and chemical stability.
Process barriers
Injection molding accuracy: The gap between the piston and the bottle body needs to be controlled at the micron level, relying on professional molds.
Filling requirements: Special low-speed vacuum filling machine to extract air, tilting or high-speed filling can easily cause displacement and leakage of the inner plug.
3.Market positioning and industry trends
Core application scenarios:
Applicable categories: essence, lotion, low-viscosity cream (must be fluid and particle-free).
Vacuum bottles have become the mainstream packaging for mid-to-high-end skin care products due to their sealing and user experience.