Gas Discharge Cap Structure for Leak-Safe Cosmetic Venting
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Solution Overview
Problem
Existing cosmetic containers face issues with gas discharge efficiency and content leakage due to gas pressure, particularly when storing vitamin contents, as conventional methods involve forming holes in the upper cap, which deteriorate aesthetic appeal and reduce discharge efficiency.
Innovation Solution
A gas discharge cap that discharges gas through the lower side of the cap, utilizing a check valve with a spring and foam packing, and additional sealing areas to prevent leakage, ensuring efficient gas release and containment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a hole is formed in the upper cap to discharge gas, then gas discharge is enabled, but aesthetic appeal deteriorates and gas discharge efficiency is reduced
Solution Approach 1:
Instead of discharging gas through the upper cap as in conventional designs, this patent inverts the discharge location to the lower side surface of the cap. The check valve is positioned at the bottom, allowing gas to escape downward through the lower side surface, thereby maintaining the aesthetic appearance of the cap while enabling effective gas discharge.
Solution Approach 2:
A check valve is introduced as an intermediary component between the internal pressure source and the external environment. The check valve mediates the gas discharge process by opening only when internal pressure exceeds external pressure, controlling the discharge timing and direction while preventing backward flow, thus achieving both aesthetic preservation and efficient gas release.
2Reliability
If the container is sealed to prevent leakage, then content containment is improved, but gas pressure buildup occurs leading to swelling or explosion
Solution Approach 1:
The check valve mechanism provides self-regulating pressure relief. When internal gas pressure exceeds external pressure by a predetermined threshold, the check valve automatically opens to release gas. When pressure equalizes, the valve closes to seal the container. This self-service mechanism maintains content containment while preventing dangerous pressure buildup without requiring external intervention.
Solution Approach 2:
The system changes the pressure parameter dynamically through the check valve operation. The valve opens when the pressure difference between internal and external environments exceeds a predetermined threshold, and closes when the pressure difference falls below the threshold. This parameter-based control ensures both secure sealing and safe pressure management.
3Reliability
If a check valve is added to control gas discharge, then pressure management is improved, but device complexity increases
Solution Approach 1:
The check valve utilizes a flexible membrane or thin film structure that can deform based on pressure differential. This flexible design allows the valve to open and close automatically without complex mechanical components, springs, or actuators. The thin film bends outward when internal pressure exceeds external pressure, creating an opening, and returns to its sealed position when pressure equalizes, thus achieving reliable pressure management with minimal structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves aesthetic sense and gas discharge efficiency while effectively preventing contents from leaking out by using a check valve, spring, and foam packing to manage pressure and seal the container.
Implementation Method 1
a check valve configured to be inserted into and coupled to the inner cap opening to seal or open the inner cap opening according to a pressure difference between an inside and outside of the container
Implementation Method 2
a spring configured to press the check valve toward the inner cap opening
Implementation Method 3
a foam packing portion disposed in a space between the inner cap and the outer cap, configured to prevent contents in the container from leaking out
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A gas discharge cap 100 includes a main body 200, an inner cap 110 coupled to the main body 200 and having a partial region in which an inner cap opening 111b is formed, an outer cap 120 covering an outer side of the inner cap 110, and a check valve 130 inserted into and coupled to the inner cap opening 111b to seal or open the inner cap opening 111b according to a pressure of the main body 200.