Discharge Container Cap Flow Groove Anti-Drip Design

The flow groove is positioned at a specific location on the valve seat where it can effectively receive remaining contents from the discharge nozzle while being protected from gravitational drainage when tilted. The localized positioning creates different functional zones: one that promotes content return during normal use and another that prevents dripping during storage or transport.

The solution moves from a two-dimensional flat valve seat to a three-dimensional structured valve seat with a recessed flow groove. This dimensional change creates a depression that can trap and hold remaining contents, preventing them from draining out when the container is tilted, while still allowing easy access during normal discharge operation.

The harmful remaining contents are extracted from the discharge nozzle by directing them into the flow groove through gravitational flow and surface tension. The flow groove acts as a separate receptacle that captures these remaining contents, removing them from the discharge path and preventing subsequent leakage or overflow.

The flow groove serves as an intermediary structure between the discharge nozzle and the external environment. It provides a transition zone where remaining contents can be temporarily held and redirected back into the inner container, preventing direct contact with the external environment and eliminating the harmful effects of leakage and overflow.

Before the sealing ring makes contact with the discharge port to create the seal, the flow groove has already captured and redirected remaining contents away from the discharge port. This preliminary action of content redirection prevents overflow and contamination before the sealing operation begins, ensuring both effective sealing and clean cap interior.

The flow groove acts as an intermediary that intercepts remaining contents before they can reach the discharge port sealing interface. By providing this intermediate capture zone, the system prevents direct contact between remaining contents and the sealing area, eliminating contamination while maintaining sealing effectiveness.