Useless fact
What is the plastic tube inside a spray bottle called?
The plastic tube that extends from the pump of a spray bottle to the bottom of the container is called a dip tube.
The plastic tube inside spray bottles and soap dispensers that draws the liquid up to the nozzle is known as a dip tube. This component is crucial for the functioning of pump and aerosol mechanisms, as it relies on a pressure differential to push the fluid upward. When the trigger or pump is pressed, a low-pressure zone is created inside the chamber, forcing the liquid under atmospheric pressure to travel up the dip tube and out through the nozzle. The design of these tubes often incorporates a slight curve or angle, ensuring that the bottom of the tube rests at the lowest point of the container to minimize waste. The concept of the dip tube dates back to early aerosol and siphon designs patented in the nineteenth and twentieth centuries, and it remains a fundamental element of modern household packaging.
Why this is true — The term is defined in standard English dictionaries and packaging engineering handbooks as the tube used to draw liquid from a container.
Sources
- Liquid spray bottle having a self-positioning dip tube United States Patent and Trademark Office