The spray pump, also known as the sprayer, is the main […]
The spray pump, also known as the sprayer, is the main accessory product for cosmetic containers and one of the content dispensers. It uses the principle of atmospheric balance to spray out the liquid in the bottle by pressing, and the high-speed flow of liquid will also drive it. The flow of gas near the nozzle orifice makes the speed of the gas near the nozzle orifice increase, the pressure decreases, and a local negative pressure zone is formed. Thus, the surrounding air is mixed into the liquid to form a gas-liquid mixture, and the liquid produces an atomization effect.
The bayonet on the spray pump (half bayonet aluminum, full bayonet aluminum), the screw is all plastic, but some are covered with a layer of aluminum cover, a layer of anodized aluminum. Most of the internal parts of the spray pump are mainly made of PE, PP, LDPE and other plastic materials, which are molded by injection molding. Among them, glass beads, springs and other accessories are generally purchased from outside. The main components of the spray pump can be applied to vacuum plating, anodized aluminum, spraying, injection molding and other methods. Both the nozzle surface and the surface of the mouthpiece of the spray pump can be printed with graphics and text. It can be operated by hot stamping, silk screen and other processes. However, in order to keep it simple, it is generally not printed on the nozzle.
Conventional spray pumps are mainly composed of press nozzle/press head, diffuser nozzle, central duct, lock cover, gasket, piston core, piston, spring, pump body, suction tube and other accessories. The piston is an open piston and is connected to the piston seat. , To achieve the effect that when the compression rod moves upward, the pump body is opened to the outside, and when it moves upward, the working chamber is closed. According to the structural design requirements of different pumps, the relevant accessories will be different, but the principle and the ultimate goal are the same, that is, to effectively take the contents.
Distributors are divided into two types: tie-type and screw-type. The size of the pump head is determined by the caliber of the matching bottle. The spray specification is 12.5mm-24mm, and the water output is 0.1ml/time—0.2ml/time. It is generally used for packaging perfumes, gel water and other products. The same diameter takes over. The length of the bottle can be determined according to the height of the bottle. There are two methods for measuring the spray head, the amount of liquid sprayed by the spray head at one time, the peeling measurement method and the absolute value measurement method. The error is within 0.02g. The size of the pump body is also used to distinguish the measurement. There are more spray pump molds and higher cost.