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What is the principle of making airless bottles

What is the principle of making airless bottles

2021-04-06 16:06:10

A vacuum bottle is a cosmetic bottle, which includes a bottle body, a pump liquid piston mechanism at the opening of the bottle body, and a control mechanism connected to the pump liquid piston mechanism. The bottle body is provided with a bottle piston which is connected to the inner wall of the bottle body. In a sealed fit, a liquid cavity is formed on the upper side of the bottle piston, an air cavity is formed on the lower side of the bottle piston, and a vent hole is opened at the bottom of the cosmetic bottle body, and the vent hole communicates with the air cavity.

The pump liquid piston mechanism includes a cover connected with the cosmetic bottle, a valve seat on the cover, and a pump piston matched with the valve seat. A mounting cylinder is provided in the middle of the cover, and the valve seat is arranged in the mounting cylinder. A liquid channel is arranged inside, a liquid hole communicating with the liquid channel is opened on the installation cylinder.

The pump piston is airtightly matched with the inner wall of the installation cylinder, and the valve seat is connected with the control mechanism. A bottom valve plate is arranged at the liquid hole. A sealing gasket is arranged between the cover body and the bottle body, and the cosmetic bottle piston is provided with a groove matching the installation cylinder. The control mechanism includes a connecting rod connected with the valve seat, a gland connected with the connecting rod, a return spring, and a limit cover. The gland is provided with a liquid outlet, the liquid outlet is connected to the liquid channel, and the return spring is connected to the connecting rod. Sleeve, one end of the return spring is connected with the cover, the other end is connected with the cover, the limit cover is connected with the cover, the limit cover is opened with a limit hole, the compression cover is arranged in the limit hole, and the cosmetic bottle gland A snap ring matched with the limit hole is provided on the upper part. The connecting rod is a hollow structure, the valve seat is arranged inside the connecting rod, and the valve seat is fixedly connected with the connecting rod. A plug body is provided at the liquid outlet. It also includes a protective cover, the pressing cover and the limiting cover are located inside the protective cover, the protective cover is provided with a card slot, and the limiting cover is provided with a card slot matching the card slot.

The bottle body includes an outer bottle and an inner bottle arranged inside the outer bottle, and the outer bottle and the inner bottle of the cosmetic bottle are provided with corresponding vent holes.

The beneficial effects of the cosmetic bottle are: the bottle piston is provided in the bottle body, and a liquid cavity is formed on the upper side of the bottle piston, an air cavity is formed on the lower side of the bottle piston, and a vent hole is opened at the bottom of the bottle body. The cavity is connected, so the lower surface of the bottle piston is always under atmospheric pressure. When the cosmetics in the liquid cavity are squeezed out of the liquid cavity, a vacuum environment will appear. At this time, under the action of atmospheric pressure, the bottle piston will move upward. That is to say, with the use of cosmetics in the liquid cavity.

The bottle piston gradually moves upward, and at the same time, a groove matching the mounting cylinder is opened on the cosmetic bottle piston, which ensures that the cosmetics in the entire liquid cavity can be completely discharged, so that the new type has the advantages of simple structure and strong practicability. In addition, by providing a sealing gasket between the cover and the bottle body, the liquid cavity is further ensured to be an air-tight space, that is, the new type of sealing and practicability are further improved.

If readers want to know more about airless bottles, please feel free to contact us Hangzhou YAKIN Packaging, we are willing to provide you with the best quality service.

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