Packaging Container Sealing Ridge for Splash-Free Lid Opening
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Solution Overview
Problem
Existing packaging containers with liquid contents, especially those designed for individuals with swallowing difficulties, face issues with liquid pooling and scattering when the lid is opened, particularly when thickened seasoning liquids are used.
Innovation Solution
A packaging container design featuring a sealing ridge with a beak part and an anti-splash protrusion on the flange part, where the lid is heat-sealed, preventing liquid pooling by ensuring the lid detaches at the beak part while maintaining a gap with the anti-splash protrusion, allowing gas release without liquid spillage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid is heat-sealed to the flange part with a sealing ridge, then the sealing performance is improved, but liquid pools form between the lid and the open-here part causing scattering when opening
Solution Approach 1:
The sealing ridge is divided into multiple segments: a first sealing ridge portion extending radially outward from the container body, and a second sealing ridge portion extending radially inward from the container body. These segments are separated by a radial gap that prevents liquid from pooling continuously between the lid and container body, thereby eliminating the liquid pool formation problem while maintaining sealing effectiveness.
Solution Approach 2:
Different portions of the sealing ridge are given different functions: the first sealing ridge portion provides sealing at one location while the second sealing ridge portion provides sealing at another location, with the gap between them creating a specific local condition that prevents liquid accumulation. This local differentiation of function resolves the contradiction between sealing and liquid pooling prevention.
2Ease of operation
If a beak part is provided for easy opening, then the ease of operation is improved, but liquid still pools in the space between the beak part and the lid
Solution Approach 1:
The sealing ridge is segmented into two separate portions with a radial gap between them, which interrupts the continuous space where liquid could pool. This segmentation maintains the beak part's opening function while preventing liquid accumulation in the gap region.
Solution Approach 2:
The harmful liquid pool formation is prevented by extracting or removing the continuous radial space between the beak part and container body through the radial gap in the sealing ridge, thereby eliminating the condition that allows liquid pooling while preserving the beak part's structural integrity for easy opening.
3Loss of substance
If thickened seasoning liquid is used to prevent spillage during transport, then the loss of substance is reduced, but the liquid is more likely to form pools and scatter when opening
Solution Approach 1:
The radial gap in the sealing ridge segments the liquid-containing space, preventing thickened liquid from forming continuous pools even when viscous. This segmentation approach addresses the contradiction by maintaining liquid retention during transport while preventing pool formation upon opening.
Solution Approach 2:
The gap creates a specific local condition in the radial direction that prevents liquid accumulation, while the rest of the container maintains its liquid-holding capability. This local quality change resolves the contradiction between retaining viscous liquid and preventing pool formation.
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 design effectively prevents liquid splashing upon opening, reducing the formation of liquid pools and minimizing the scattering of liquid droplets, even with viscous contents.
Implementation Method 1
a lid member heat-sealed to the flange part
Data Source
AI summary
A packaging container (1) includes a housing part (21) that houses a content, a flange part (22) provided on an outer circumference of an opening of the housing part (21) integrally with the housing part (21), a sealing ridge (23) provided on a top face of the flange part (22), annularly formed over an entire circumference of the flange part (22) so as to be protruded upward, and having a first protrusion (23a) that protrudes outward in a plane direction of the flange part (22) at a position corresponding to an opening start part, and a second protrusion (24) provided on the top face of the flange part (22) so as to be protruded upward, and forming a gap along an inner face of the first protrusion (23a) on an inner circumferential side of the first protrusion (23a) of the sealing ridge (23).