Gas Permeation Testing Sample Plate with Bushing Alignment
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Solution Overview
Problem
Existing systems for testing gas permeation through plastic container walls are prone to testing errors due to minute leakages around screw-type fittings, leading to increased time and inefficiency in the testing process.
Innovation Solution
A system comprising moveable sample plates with conduits and bushings for proper alignment with a permanently mounted manifold, eliminating screw-type connections and using adhesive materials for secure container mounting, along with grooves for o-ring seals to enhance the seal reliability and reduce testing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw-type fittings are used to connect containers to the testing system, then the connection can be securely fastened, but minute leakages occur around the fittings leading to testing errors
Solution Approach 1:
The patent removes the screw-type fittings entirely from the system, extracting the problematic connection method that caused leakages and testing errors, replacing it with a direct push-fit interface between sample plates and the manifold
Solution Approach 2:
The patent merges the container mounting function directly into the sample plate structure, eliminating the separate fitting component by integrating the sealing interface directly onto the sample plate surface that contacts the container opening
2Reliability
If screw-type fittings and flat plates are used for container mounting, then the container can be securely affixed, but the process of affixing and connecting takes significant time
Solution Approach 1:
The patent segments the testing system into modular sample plates that can be independently prepared with containers already affixed, allowing the mounting process to be decoupled from the connection process, enabling faster sample exchange
Solution Approach 2:
The patent performs the container affixing operation in advance on the sample plate before insertion into the testing system, so that when the sample plate is inserted, the container is already securely mounted and ready for immediate testing
3Measurement precision
If fittings are replaced more often to reduce leakages, then testing errors decrease, but the time between testing increases significantly
Solution Approach 1:
The patent employs disposable or easily replaceable sample plates with integrated sealing surfaces, eliminating the need to maintain and replace expensive fittings, allowing rapid replacement of sample plates without affecting system productivity
4Reliability
If meticulous affixing of containers to flat plates is performed to ensure better connection, then leakage is reduced, but the time required for preparation increases
Solution Approach 1:
The patent introduces a dynamic sealing mechanism where the sample plate is inserted and pushed against the container opening, allowing the seal to self-adjust and conform to the container surface, ensuring reliable sealing without requiring meticulous manual affixing
Data Source
AI summary
A system for measuring gas permeation through container walls is disclosed, wherein a pressure fluid is introduced into a container to be tested. Once the pressure fluid is introduced into the container, the pressure fluid is drawn out of the container and tested to determine the permeation characteristics of the container.