Porous Membrane Transparency for Liquid Level Indication
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Solution Overview
Problem
Existing membrane-based devices for releasing volatile substances lack a clear end-of-life indication, as the porous elements used to enhance evaporation obscure the liquid, making it difficult for users to determine when the product is exhausted.
Innovation Solution
A container with a porous membrane that becomes transparent when in contact with liquid, allowing a message or pattern to be visible, indicating the exhaustion of volatile substances, and featuring a detachable barrier layer and a liquid residue area to maintain transparency until the end of life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a porous element is present in the container behind the membrane to act as a wick, then evaporation is maximized, but the liquid is hidden and end of life indication is lost
Solution Approach 1:
The porous membrane changes its optical properties from opaque to transparent when in contact with liquid. This dynamic optical change serves as a visual indicator that the liquid is present and the device is functional, allowing users to monitor the end of life without requiring a separate indicator mechanism.
Solution Approach 2:
The membrane itself serves the dual function of both maximizing evaporation (through its porous structure) and providing end of life indication (through its transparency change). The system uses the membrane's inherent properties to achieve both objectives without adding separate components.
2Loss of information
If the porous membrane is opaque when dry to indicate end of life, then visibility is improved, but the membrane cannot maintain transparency throughout usage
Solution Approach 1:
The membrane's optical properties are dynamic rather than static. It transitions from opaque (when dry) to transparent (when wet), allowing it to adapt its appearance based on the liquid presence. This dynamic behavior enables it to indicate both functionality and end of life states.
Solution Approach 2:
The membrane's physical parameter (transparency) changes in response to liquid contact. This parameter change is utilized to communicate the operational state to the user, transforming a passive component into an active indicator without requiring additional elements.
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
Provides a clear and simple visual indication of when the volatile substances have been exhausted, ensuring users replace the product on time while maintaining the membrane's transparency throughout its usage.
Implementation Method 1
a porous membrane (3) that gets transparent when is in contact with a liquid inside the container body
Implementation Method 2
The porous membrane is opaque when it is a dry state, i.e. it is not in contact with a liquid, because the pores diffract the light
Implementation Method 3
These devices comprise a container, often made by thermoforming, that is closed by the membrane, in order to let the vapor pass through it but not the liquid
Data Source
AI summary
Container for releasing volatile substances, comprising a container body (1) that contains a liquid with volatile substances and that is provided with an aperture (2); a porous membrane (3) that closes the aperture (2) of the container body (1); and wherein the porous membrane (3) is transparent when it is in contact with the liquid in the container body (1).The invention provides a container for releasing volatile substances that permits to show the user that the releasing of the volatile substances is exhausted in a very simply way.