Chemical Container Cap Breakseal With Radial Sealing Access
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Solution Overview
Problem
Existing chemical container caps fail to provide effective sealing during transport and handling of hazardous or expensive liquids, leading to potential leakage and accidental access before the desired destination.
Innovation Solution
A chemical container cap with a breakseal design featuring a base portion that ruptures under external force, an outer periphery portion that curves away from the base and provides tension, and a ring that forms a radial seal with the container port, ensuring secure sealing and controlled access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cap design is used, then the cap can be easily manufactured and operated, but it fails to provide effective sealing during transport, leading to leakage
Solution Approach 1:
The cap is segmented into distinct functional components: a cap body, a breakseal with base portion and outer periphery portion, and a ring portion. Each segment performs a specific function - the base portion provides sealing, the outer periphery portion provides tension and curvature for structural integrity, and the ring portion forms a radial seal with the container port. This segmentation allows the complex sealing function to be achieved through coordinated simple parts.
Solution Approach 2:
The breakseal incorporates a dynamic rupture mechanism where the base portion is designed to rupture under external force (such as pushing against a piston). This dynamic feature allows the cap to transition from a sealed state during transport to an accessible state during use, providing reliability only when needed while maintaining ease of operation when the chemical needs to be accessed.
2Reliability
If the cap is designed with a breakseal for controlled access, then accidental access is prevented, but the device becomes more complex
Solution Approach 1:
The breakseal is pre-configured in a sealed position during manufacturing, with the base portion already in place to prevent accidental access. The outer periphery portion is pre-formed with its curved geometry to provide inherent tension. This preliminary setup ensures safety during transport without requiring complex active control mechanisms - the safety feature is simply engaged by default and requires only a simple pushing action to activate when needed.
3Reliability
If the outer periphery portion is designed to curve away from the base, then tension is provided to hold the breakseal in place, but manufacturing becomes more difficult
Solution Approach 1:
The outer periphery portion is designed with a curved geometry that extends away from the base portion. This curvature serves multiple purposes: it provides the necessary tension to hold the breakseal securely in the cap opening, and it can be efficiently manufactured using standard injection molding techniques. The curved shape is formed in a single molding operation, avoiding the need for complex assembly steps or secondary operations.
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 breakseal design significantly reduces leakage and allows controlled access without uncoupling the cap, providing improved sealing and safety during transport and handling of hazardous or expensive chemicals.
Implementation Method 1
The outer periphery portion curves away from a plane of the base portion as the outer periphery portion extends outwards from the base portion. The outer periphery portion is configured such that a circumference of the outer periphery portion is reducible so as to provide tension against an opening for a hole in a chemical container cap
Implementation Method 2
The base portion extends over the hole and is configured to rupture under an external force
Implementation Method 3
The ring portion is configured to form a radial seal with a port of a chemical container
Data Source
AI summary
A breakseal is for a chemical container cap. A chemical container cap includes a cap body and a breakseal. The breakseal is disposed in an opening of a hole in the cap body. The breakseal includes a base portion extending over the hole, an outer periphery portion extending outwards from the base portion, and a first ring protruding from the body portion. The base portion is configured to rupture under an external force. The outer periphery portion curves away from a plane of the base portion as the outer periphery portion extends outwards. The ring portion is configured to form a radial seal with a port of a chemical container. An assembly includes a chemical container with a port and a chemical container cap coupled to the chemical container over the port.