Glugging is problematic

Glugging is a problem because it can make it difficult to dispense the liquid, leading to spills, waste, and inconvenience. If the substance is volatile, a nuisance quickly becomes a safety concern.

But what is glugging?
Glugging refers to the phenomenon where a viscous liquid flows out of a container, such as a plastic bottle, slowly and irregularly, often accompanied by a “glugging” sound. This occurs when the liquid’s viscosity is high enough that it doesn’t flow smoothly out of the bottle, instead forming a series of discrete, irregular flows.

In the context of plastic bottles, glugging can be particularly problematic for products like condiments, sauces, or personal care products that are designed to be dispensed in a controlled manner. The issue is often exacerbated by the design of the bottle, such as a narrow neck or a particular type of cap or dispenser. To mitigate glugging, manufacturers like us use various design strategies, such as modifying the bottle’s geometry, using different materials or coatings, or incorporating features like venting systems or specialized dispensers.