Pressure-Release Container Seal for Directed Content Discharge
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Solution Overview
Problem
Existing containers with annular seal portions face issues in predicting the discharging direction of contents due to lateral expansion when the seal portion detaches under increased pressure, leading to unpredictable discharge patterns.
Innovation Solution
A container design featuring a detaching seal portion that radially extends from the annular seal, accompanied by an outflow groove and non-detaching seal portions with enhanced bonding forces, ensuring controlled discharge direction and preventing unintended seal detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the annular seal portion detaches due to pressure increase, then the contents can be discharged, but the discharge direction becomes unpredictable due to lateral expansion
Solution Approach 1:
The annular seal portion is segmented into a detaching seal portion and non-detaching seal portions. The detaching seal portion is designed to detach under pressure to enable discharge, while the non-detaching seal portions maintain bonding to constrain lateral expansion and ensure predictable discharge direction through the outflow groove
Solution Approach 2:
Different portions of the seal have different bonding characteristics. The detaching seal portion has weaker bonding that breaks under pressure, while the non-detaching seal portions have enhanced bonding that prevents unintended detachment. This local differentiation allows controlled discharge while maintaining overall seal integrity
2Reliability
If the seal portion is made strong to prevent detachment, then sealing reliability is improved, but the contents cannot be discharged when needed
Solution Approach 1:
The seal is divided into functional zones: the detaching seal portion with controlled bonding strength that fails at a predetermined pressure to enable discharge, and the non-detaching seal portions with enhanced bonding that maintain sealing integrity. This segmentation allows both strong sealing and controlled discharge
Solution Approach 2:
The bonding strength parameter is varied across different seal portions. The detaching seal portion has lower bonding strength to allow pressure-induced detachment, while the non-detaching seal portions have higher bonding strength to maintain seal integrity. This parameter differentiation resolves the contradiction between seal strength and discharge capability
3Productivity
If the outflow channel is made wide to facilitate discharge, then discharge speed increases, but the discharge direction becomes less predictable
Solution Approach 1:
The outflow groove is designed with a curved cross-section that tapers toward the discharge opening. This curved geometry guides the discharged contents in a predictable direction while maintaining sufficient flow capacity, resolving the contradiction between discharge speed and direction control
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
The container ensures predictable discharge direction and maintains a sealed state even under unexpected pressure increases, limiting the discharge channel width and reducing content remaining in the container.
Implementation Method 1
a portion of the annular seal portion being detached in response to increase of pressure inside the container body associated with deformation of the container body resulting from application of an external force to a bottom face of the container body
Implementation Method 2
an outflow groove sunk toward the bottom of the container body at a position of the flanged face of the container body corresponding to the outflow channel... the contents will be discharged without being expanded much laterally as being guided along the radial direction by a cylindrical outflow guiding space formed between the outflow groove and the face of the exfoliated lid member
Data Source
Figure 1~2
Figure 3~4
Figure 5(a)~6
AI summary
Provided is a container whose shape for discharging contents is hardly expandable laterally, the container including a container body 2 holding contents and a lid member 9 for closing an opening of the container body 2 which are sealed with each other by an annular seal portion 6 formed along a flanged face of the opening. At a specified position of the annular seal portion 6, there is provided a detaching seal portion 6S which is to be detached by an increase of inside pressure inside the container body 2 in association with deformation of the container body 2 based on an external force. An outflow channel for discharging the contents C therethrough extends radially outwards from the detaching seal portion 6S. At a position of the container body 2 corresponding to the outflow channel of the flanged face, there is formed an outflow groove 5D which is sunk toward a bottom portion of the container body 2.