You can hold the nozzle part of the bottle with your hand, rotate the upper part of the pump head counterclockwise, and when you hear a "boom", the pump head will pop up.
The shampoo bottle caps that I just bought are all next to the bottom at first, which is mainly because the shampoo bottle caps are designed using the principle of air pressure. When using it, you can directly pull up the bottle cap vigorously, which is a simple and rough way. You can also twist the pump head part, and when twisting, press the pump head down, so that it will bounce off.
The pump head uses the principle of pressing liquid suction, which is to use the movement of the piston to discharge the air existing in the storage liquid cylinder, resulting in internal and external air pressure, so that the liquid rises under the action of air pressure and is discharged from the liquid outlet pipe to the outside of the pipe.
Some shampoo pump heads are designed with a plastic buckle between the liquid outlet and the lower round cover at the beginning, which is used to fix it and prevent the pump head from rotating during transportation to prevent liquid leakage. At this time, the pump head can be rotated only after the plastic buckle is removed.
When the opened shampoo needs to be transported or moved, the pump head can be removed from the shampoo bottle, and then the pump head can be pressed to the bottom, and the pump head can be screwed back into the cap by rotating the pump head in the opposite direction as indicated on the cap Go, but this process requires a certain amount of strength. Finally, reinstall the pump head back into the bottle.
Yuyao Sky Commodity Co.Ltd. is a professional Plastic Bottle Pump Head Manufacturers. If you need it, you can click the official website to contact us. We are willing to answer more information for you.