The 250ml Plastic Lotion Bottle is one of the most popular methods for dispensing viscous (thick liquid) products in the personal care and beauty industries, available in various shapes and sizes. When used as designed, the pump dispenses the right amount of product again and again. But have you ever thought about the ingredients in the lotion pump to make it work? Although there are hundreds of different designs on the market today, the basic principles are the same. The packaging crash course disassembles one of the lotion pumps and gives you an overview of these components and how they contribute to the overall function of pumping the product from the bottle To your hand. Generally speaking, a lotion pump consists of the following components: Pump ActuatorActuator: The actuator or pump head is what the consumer presses to pump the product out of the container. Actuators are usually made of PP plastic and can have many different designs-and usually have an upward or downward locking function to prevent accidental output. This is one of the component designs that can distinguish one pump from another in terms of appearance design. This is also the part where ergonomics plays a role in consumer satisfaction. Pump ClosureClosure: Screw the entire assembly to the neck of the bottle. It is recognized as a common neck finish destination, such as 28-410, 33-400. Usually made of PP plastic, usually designed with ribs or smooth side surfaces. In some cases, a shiny metal casing can be installed to give the lotion pump a high-end and elegant appearance. Pump GasketOuter Gasket: The gasket is usually installed on the inside of the bottle cap by friction. It acts as a gasket barrier for the bottle's land area to prevent product leakage. According to the manufacturer's design, this outer gasket can be made of a variety of materials: rubber and low-density polyethylene are just two of the many possible options. Pump housing shell: Sometimes called the pump assembly housing, this part fixes all pump components in place and acts as a transfer chamber that transports the product from the dip tube to the actuator and ultimately to the user. This component is usually made of PP plastic. Depending on the output and design of the lotion pump, the size of the housing may vary greatly. It should be noted that if you pair the pump with a glass bottle, because the side wall of the glass bottle is thick, the mouth of the bottle may not be wide enough to fit the shell-please be sure to check for fit and function first. PumpStem / Piston / Spring / Ball internal components (internal components inside the housing): These components will vary according to the design of the lotion pump. Some may even have additional components to help the product flow, and some designs may even have additional housing components to isolate the metal spring from the product channel. These pumps are usually referred to as having a "metal-free channel" function, and the product will not interact with metal. Spring contact-eliminates potential compatibility issues with metal springs. Pump Dip Tube Dip Tube: A long plastic tube made of PP plastic that extends the range of the lotion pump to the bottom of the bottle. The length of the dip tube varies according to the bottle that the pump is paired with. You can read about the 3-step dip tube measurement method here. A correctly cut dip tube will maximize product usage and prevent clogging. How does it actually work? Lotion pump parts The lotion pump acts much like an air suction device. Although the law of gravity tells it to do the opposite, it still sucks the product from the bottle into the consumer's hand. When the consumer presses the actuator, the piston moves to compress the spring, and the upward air pressure pulls the ball up into the dip tube along with the product inside, and then enters the chamber. When the user releases the actuator, the spring returns the piston and actuator to their upward position, and the ball returns to its rest position, thereby sealing the chamber and preventing the liquid product from flowing downwards back into the bottle. This initial cycle is called "startup". When the user presses the actuator again, the product already in the chamber will be drawn from the chamber, through the valve stem and the actuator, and then dispensed from the pump to the consumer's hand. If the pump has a larger chamber (commonly found in high output pumps), additional priming may be required before the product is dispensed through the actuator. Lotion pump output The output of plastic emulsion pump is usually in cc (or ml) as the unit. Usually in the range of 0.5 to 4cc, some larger pumps have larger chambers and longer piston/spring assemblies, and output up to 8cc. Many manufacturers provide multiple output options for each of their lotion pump products, allowing product marketers to fully control the dosage. PET Candy Bottles is also something our company has. If you want, you can contact us at any time, or if you have any questions, you can also consult at any time. https://www.jinfupack.com/product/daily-bottle/250ml-plastic-lotion-bottle.html