Plastic-Coated Metallic Ring for Water-Based Liquid Containers
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Solution Overview
Problem
Existing containers for water-based liquids face issues with oxidation of ferrous materials leading to rust, incomplete emptying due to protruding metallic rings, and inability to stack stably due to flat bottoms.
Innovation Solution
A plastic-coated metallic ring and closure with a disk-shaped design that forms a flush seal and a circular groove at the base for stable stacking, preventing direct contact with water-based liquids and allowing complete emptying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a ferrous metallic ring is used to delimit the mouth of the container, then the container structure is strong and reliable, but the metallic ring is subject to oxidation and rust formation when in contact with water-based liquids
Solution Approach 1:
A plastic coating layer is applied to the metallic ring, serving as an intermediary barrier between the ferrous material and the water-based liquid. This coating prevents direct contact, eliminating oxidation and rust formation while preserving the structural strength of the metallic ring.
Solution Approach 2:
The metallic ring is transformed into a composite structure by combining ferrous material with a plastic coating layer. This composite design leverages the strength of the metal and the chemical resistance of the plastic, resolving the contradiction between structural strength and oxidation resistance.
2Reliability
If the metallic ring protrudes inward to form a seal, then the closure can be properly sealed, but the contained substance accumulates at this point and cannot be completely emptied
Solution Approach 1:
The sealing function is extracted from the metallic ring structure itself and transferred to a separate sealing element or coating applied to the ring. This allows the metallic ring to be positioned flush with the container wall, eliminating the protrusion that causes substance accumulation while maintaining sealing capability through the dedicated sealing component.
3Stability of the object's composition
If the container has a flat bottom for stability, then the container is easy to place, but multiple containers cannot be stacked one inside the other without collapsing
Solution Approach 1:
The flat bottom of the container is replaced with a curved or rounded bottom surface. This curvature allows containers to nest within each other when stacked, preventing collapse while maintaining stability when placed on surfaces. The curved geometry enables adaptive stacking configurations.
Solution Approach 2:
The container design incorporates features in the vertical dimension, such as a raised rim at the opening or a curved bottom profile, that enable stacking in the vertical dimension without compromising horizontal stability. This dimensional adaptation allows containers to function both as stable individual units and as stackable storage solutions.
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 solution prevents oxidation, ensures complete emptying, and allows for stable stacking of containers while maintaining the physical-chemical properties of the contents.
Implementation Method 1
the metallic ring and the closure, if made of ferrous materials, are subject to oxidation, which leads to the forming of rust
Data Source
Figure 1~2
Figure 3
Figure 3a
AI summary
A container (1), particularly suitable for containing water-based liquids and the like, comprising a containment body (2) which has an upper mouth (3) delimited by a metallic ring (4) that is associated with the containment body (2) and can be engaged by pressing with a closure (5). The metallic ring (4) is provided partly by a sealed band (8a) that is plastic-coated at least at the region of the metallic ring (4) that is adapted to face the inside of the containment body (2) to prevent direct contact of the water-based liquid substance contained in the containment body (2) with the metallic ring (4).