Breathable Waterproof Sheet With Support Layer
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Solution Overview
Problem
Conventional breathable waterproof sheets for portable terminals cause malfunctions in pressure sensors due to collisions between the waterproof air-permeable film and water pressure, leading to false information provided by the terminal.
Innovation Solution
A breathable waterproof sheet with a support layer having a plurality of air-permeable holes interposed between the waterproof air-permeable layer and the pressure sensor, utilizing an adhesive layer to create a spacing space and prevent direct contact between the layers under water pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof air-permeable film is used to block water while allowing air passage, then waterproof performance is improved, but the film may collide with the pressure sensor under water pressure causing malfunction
Solution Approach 1:
A support layer is introduced as an intermediary component between the waterproof air-permeable film and the pressure sensor. This support layer has air-permeable holes that allow air to pass through while providing mechanical support to prevent the film from collapsing and colliding with the sensor under water pressure, thus resolving the contradiction between waterproof performance and sensor protection
2Ease of operation
If air-permeable holes are formed for pressure sensor operation, then air permeation is improved, but water or dust can permeate into the electronic appliance
Solution Approach 1:
The patent utilizes porous materials with controlled pore sizes and structures. The waterproof air-permeable film and support layer are designed with specific porosity characteristics that allow air molecules to pass through while blocking larger water molecules and dust particles, thus achieving both air permeation and protection against harmful contaminants
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
Prevents the waterproof air-permeable layer from contacting the pressure sensor, thus preventing malfunctions and ensuring accurate data from the portable terminal.
Implementation Method 1
a waterproof air-permeable layer formed of a film having elasticity
Implementation Method 2
a support layer having a plurality of air-permeable holes formed therein, and the support layer may be formed of a porous film
Implementation Method 3
an adhesive layer interposed between the waterproof air-permeable layer and the support layer to be adhered to the waterproof air-permeable layer and the support layer
Data Source
AI summary
A breathable waterproof sheet, which interposes a support layer having a plurality of holes formed therein, thus preventing a waterproof air-permeable layer from colliding with a pressure sensor by a water pressure. The breathable waterproof sheet includes a waterproof air-permeable layer formed of a film having elasticity, an adhesive layer having one surface adhered to one surface of the waterproof air-permeable layer, and a support layer having a plurality of air-permeable holes formed therein and having one surface adhered to the other surface of the adhesive layer.