Flexible Pouch Frangible Seal Internal Mixing
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Solution Overview
Problem
Existing flexible pouches for two-component products require a multi-step process to activate dry components, such as mosquito control products, where water must be added externally, making the activation process inconvenient.
Innovation Solution
A flexible pouch design featuring a front panel, back panel, and side seals with an upper and lower compartment, where a frangible seal allows fluid passage between compartments, enabling direct contact of the components to produce a third product, such as a gas, which can exit through a vertical passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If water is added externally to activate dry components, then the activation process can be controlled, but the procedure becomes inconvenient and complex
Solution Approach 1:
The patent combines the liquid reservoir and dry component packaging into a single integrated pouch system. The liquid is pre-contained in an internal reservoir within the same packaging structure that holds the dry components, eliminating the need for separate external water addition steps and simplifying the activation process to merely mixing the two components together.
Solution Approach 2:
The pouch is segmented into distinct functional zones: an internal liquid reservoir, a dry component compartment, and a mixing chamber. This segmentation allows each component to be separately contained and controlled while enabling easy mixing when needed, resolving the contradiction by providing both control and convenience.
2Reliability
If components are pre-packaged separately, then product stability is maintained, but mixing requires external intervention
Solution Approach 1:
The packaging is divided into separate sealed compartments for liquid and dry components, maintaining their stability during storage. The segmentation includes a liquid reservoir with its own seal and a dry component compartment, ensuring both components remain stable and uncontaminated until activation is required.
Solution Approach 2:
The pouch is pre-configured with all necessary components (liquid reservoir, dry components, mixing chamber) in their proper positions during manufacturing. The frangible seal is pre-positioned to break and initiate mixing, and the spout is pre-formed for controlled dispensing, eliminating the need for external intervention during activation.
3Ease of operation
If a frangible seal is used to enable fluid passage, then mixing is simplified, but the seal structure becomes more complex
Solution Approach 1:
The sealing system is segmented into multiple specialized seals: a frangible seal that breaks to allow liquid flow from the reservoir, a spout seal that controls dispensing, and compartment seals that maintain separation. Each seal performs a specific function, and their coordinated design simplifies the overall activation process despite the increased structural complexity.
Solution Approach 2:
The frangible seal acts as an intermediary element between the liquid reservoir and the mixing chamber. It maintains the sealed state during storage but can be easily broken to enable fluid passage when activation is required, providing a simple transition from stable storage to active mixing.
4Ease of operation
If the pouch is designed for internal mixing, then convenience is improved, but the pouch structure becomes more complex
Solution Approach 1:
The pouch structure is segmented into functional zones: a liquid reservoir with frangible seal, a dry component compartment, a mixing chamber with spout, and a dispensing mechanism. This segmentation allows internal mixing to occur in a dedicated chamber while maintaining overall structural organization and managing complexity through functional zoning.
Solution Approach 2:
The liquid reservoir is nested within the overall pouch structure, with the dry components contained in the surrounding pouch body. The mixing chamber is formed by the interaction of these nested components, creating an efficient internal arrangement that enables mixing without requiring a completely separate external mixing device.
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
This design simplifies the activation process by allowing the first and second products to mix internally, producing a desired product that can exit the pouch, enhancing convenience and efficiency.
Implementation Method 1
Rupture of the bottom frangible seal provides a fluid passageway from the upper compartment to the lower compartment
Implementation Method 2
Rupture of the bottom frangible seal releases the first product from the upper compartment to come into contact with the second product in the lower compartment such that a third product, e.g., a gas, is formed
Implementation Method 3
a third product, e.g., a gas, is formed and flows through the vertical passage and out of the opening
Data Source
AI summary
A flexible pouch for two-component products includes a front panel, a back panel and a pair of side seals. An upper compartment is formed between the front panel, the back panel, one of the pair of side seals, an intermediate side seal and a bottom frangible seal. A lower compartment is formed beneath the upper compartment between the front panel and the back panel. A vertical passage extends between the intermediate side seal and another of the pair of side seals from the lower compartment to an opening. Rupture of the bottom frangible seal provides a fluid passageway from the upper compartment to the lower compartment.