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The history of airless bottles(1)

Views: 79     Author: Site Editor     Publish Time: 2021-12-07      Origin: Site Inquire

The contents of the airless bottle can be completely isolated from the air to prevent the product from being oxidized and deteriorated due to contact with the air, and the breeding of bacteria, and its high-tech concept enhances the product level. The vacuum bottle in the market is composed of a cylinder into an ellipsoid container and a piston at the bottom.

airless bottle

1. Brief introduction of development history

Plastic bottle vacuum packaging technology originated in the 1940s. Since the successful application of polyester and polyethylene plastic films to commodity packaging in 1950, vacuum packaging technology has developed rapidly. China's vacuum packaging was developed in the early 1980s. Although it was later than European developed countries, with the rapid development of China's vacuum packaging, vacuum packaging technology has continued to improve.

Vacuum packaging technology was first applied to food packaging, and then gradually introduced into the pharmaceutical packaging and cosmetic packaging industries. At the initial stage, the vacuum packaging technology of cosmetics was basically mastered by foreign-funded enterprises. In the late 1990s, China's cosmetic vacuum packaging began to enter a period of rapid development, and related domestic companies have sprung up like bamboo shoots after a rain.


2. Classification and working principle of vacuum pumps and bottles

The selection of cosmetic packaging basically includes five elements: product compatibility, seal integrity, barrier integrity, appearance appreciation, and physical properties in circulation. The integrity of the seal (that is, the airtightness of the package) is particularly important, because the active ingredients in most cosmetics are extremely volatile compounds, and many natural ingredients are easily discolored and deteriorated when exposed to air. High-end brands choose vacuum packaging not only for aesthetic reasons. Many high-end brands of skin care products have very advanced formulations and have specific requirements for vacuum packaging, so they need the best protection.

The vacuum pump and the bottle body need to be easily evacuated, the liquid distribution amount is uniform, and the internal space is reduced with the reduction of the material body, which isolates the outside air from entering, and the packaging has a beautiful appearance. Consumers can dispense the products in the package at any position and angle, realizing a 360° omni-directional application without dead ends.

airless bottle

In practical applications, the vacuum pump and bottle system can be divided into three main categories.


1. Piston vacuum system

This system is the most widely used one of the existing vacuum pumps and bottle bodies. A piston is installed inside the bottle body to create a closed space between the press head and the material body is stored in this space. Press the vacuum pump to press the head , To promote a vacuum state in the space, use the outside atmospheric pressure to push the piston to move, so as to distribute the material body through the outlet hole of the vacuum pump. 

The key point of this technology is the cooperation of the piston and the bottle wall: the piston and the bottle wall should not be too tight or too loose. Too tight can cause the piston to fail to move and make the liquid unable to pump out, and too loose to cause leakage. Therefore, it is limited by changes in packaging shapes, and very regular packaging forms such as round or oval are common. 

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