Hydrophobic Bottle Neck Coating to Prevent Carbonated Beverage Gushing

The patent applies a hydrophobic coating specifically to the inner surface of the bottle neck region, while leaving the rest of the glass bottle hydrophilic. This localized modification creates different surface properties in different regions: the coated neck region prevents nanobubble formation by repelling hydrophobic compounds, while the uncoated body maintains chemical resistance and durability. The coating is applied only where it is needed to prevent gushing, without compromising the overall reliability of the glass container.

The hydrophobic coating on the bottle neck enables the bottle to prevent gushing through its own surface properties, without requiring external devices or additives. The coating passively repels hydrophobic compounds that would otherwise induce nanobubble formation, allowing the bottle to protect itself from gushing. This self-service approach eliminates the need for additional gushing-prevention devices, keeping the system simple and cost-effective.

The patent modifies the surface energy parameters of the bottle neck by applying a hydrophobic coating, changing it from hydrophilic to hydrophobic. This parameter change fundamentally alters the interaction between the glass surface and hydrophobic compounds, preventing nanobubble formation. The coating can be applied through various methods such as spraying, dipping, or vapor deposition, which are relatively simple processes that can be integrated into existing manufacturing lines without requiring major process changes.