Waterproof Sound-Transmitting Sheet With Microporous Adhesive
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Solution Overview
Problem
Conventional waterproof sound-transmitting sheets face issues with reduced waterproof performance and sound transmission efficiency due to stretching under external impact or sound pressure, leading to increased internal pressure and deformation, which impairs sound transmission.
Innovation Solution
Incorporating an adhesive layer with micropores between the waterproof sound-transmitting layer and the support layer, and forming discharge holes on the support layer, allows for smooth airflow and reduces internal pressure, preventing deformation and enhancing sound transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a nonporous film is used for the waterproof sound-transmitting film, then waterproof performance is improved, but internal pressure builds up during assembly causing deformation and reducing sound transmission efficiency
Solution Approach 1:
The adhesive layer uses a porous substrate that allows air to escape from the internal space during assembly. The porosity of the substrate enables smooth airflow, preventing pressure buildup while maintaining the nonporous waterproof film's integrity and sound transmission performance.
2Object-generated harmful factors
If a porous film is used for the waterproof sound-transmitting film, then sound transmission efficiency is improved, but the film stretches under external impact or sound pressure, reducing waterproof performance
Solution Approach 1:
The adhesive layer substrate provides a porous structure that facilitates air escape, preventing pressure accumulation that would otherwise cause the porous waterproof film to stretch and deform under external impact or sound pressure.
Solution Approach 2:
The porous adhesive layer substrate acts as an intermediary between the waterproof film and the support layer, enabling pressure equalization and preventing direct transmission of external pressures that would cause film stretching.
3Device complexity
If air cannot escape from the internal space, then the structure remains simple, but pressure increases causing deformation and reducing sound transmission effect
Solution Approach 1:
The porous substrate of the adhesive layer provides a simple yet effective air escape mechanism. The porosity allows continuous airflow without requiring complex valves or channels, maintaining structural simplicity while preventing pressure-induced deformation.
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 solution effectively prevents pressure buildup, maintains sound transmission performance, and quickens the restoration of the sound-transmitting sheet, thereby enhancing both waterproof and sound-transmitting capabilities.
Implementation Method 1
the adhesive layer includes a substrate having a pore formed therein
Implementation Method 2
a waterproof sound-transmitting layer formed of a film having elasticity
Implementation Method 3
a waterproof sound-transmitting layer formed of a film having elasticity
Data Source
AI summary
A waterproof sound-transmitting sheet, which interposes an adhesive layer composed of a material having micropores formed therein, thus smoothing the flow of the air between a waterproof sound-transmitting layer and a support layer. The waterproof sound-transmitting sheet includes a waterproof sound-transmitting layer formed of a film having elasticity, an adhesive layer having one surface adhered to one surface of the waterproof sound-transmitting layer, and a support layer having one surface adhered to the other surface of the adhesive layer; and the adhesive layer includes a substrate having a pore formed therein and an adhesive agent formed on both surfaces of the substrate.