Lightweight Plastic Pressure Container with Double-Wall Reinforcement
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Solution Overview
Problem
Plastic pressure containers face challenges in achieving lightweight construction while maintaining resistance to high pressures and preventing deformation under pressure, as existing reinforcement methods either add unnecessary weight or fail to provide sufficient structural support.
Innovation Solution
A method involving a double container system with an inner container under higher pressure and an outer container under lower pressure, utilizing reinforcement elements such as rings, ribs, and chemical enhancements, along with a multi-chamber system, to create a lightweight yet robust plastic container capable of withstanding pressures up to 300 bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the wall thickness of plastic pressure containers is increased to resist high pressures, then the pressure resistance is improved, but the weight and cost of the container increase
Solution Approach 1:
The container wall is segmented into multiple functional layers including an inner wall, outer wall, and intermediate reinforcement layers with ribs and rings. This segmentation allows each layer to perform specific functions - the inner and outer walls provide pressure containment while the intermediate reinforcement layers with radial and circumferential ribs distribute and counteract pressure forces, achieving high pressure resistance without requiring a uniformly thick wall throughout.
2Strength
If reinforcement ribs are added to the container wall to prevent deformation under pressure, then the structural support is improved, but the complexity of the wall structure increases
Solution Approach 1:
The reinforcement elements (radial ribs, circumferential ribs, and rings) are extracted as distinct structural features from the wall and positioned in intermediate layers between the inner and outer walls. This extraction allows the reinforcement elements to be optimized independently for their pressure-resistance function while keeping the inner and outer walls relatively simple and smooth, reducing overall structural complexity while maintaining high deformation resistance.
3Strength
If an additional inner wall is added to the container to provide reinforcement, then the pressure resistance is improved, but the material consumption and weight increase
Solution Approach 1:
Instead of adding a complete additional inner wall throughout the entire container, the invention applies reinforcement locally through intermediate layers containing radial ribs, circumferential ribs, and rings positioned only where pressure forces are most critical. This local quality approach provides necessary pressure resistance at stress concentration points while minimizing material consumption compared to a full additional inner wall construction.
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 enables the production of lightweight plastic containers that effectively resist high pressures and deformations by leveraging Pascal's law, allowing the inner container to be designed thinner and lighter while the outer container acts as a safety fuse, ensuring structural integrity and safety.
Implementation Method 1
leveraging Pascal's law, allowing the inner container to be designed thinner and lighter while the outer container acts as a safety fuse
Data Source
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AI summary
Container for packaging under pressure of a filling product continuum, notably (semi-)liquid fluids, or discontinuous filling products resp,( such as foam, pastes, cream, or powders, comprising a neck section (23) with a pouring opening (24) on its top side, an adjacent sheathing section (22) forming the body of the container (1), and a bottom section (21) of the container, which is essentially composed of a plastic polymer which is closable on said top section (21) with a closure (5), remarkable In that the bottom section (21) disposed opposite said top section is closed by a separately added bottom (21) which is attached to said body (22) by means of a joint (13), and in that said body (22) is provided with a set of reinforcements (30), and a method for manufacturing it (1).