Resilient Seals for Exterior Wall Panel Assemblies
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Solution Overview
Problem
Existing exterior wall panel systems, particularly EIFS, face challenges with thermal protection, quality of seals, and labor-intensive caulking processes, especially with large construction tolerances and proximity issues, which increase costs and safety risks.
Innovation Solution
The exterior wall panel assembly incorporates resiliently deformable vertical and horizontal seals made of silicone rubber, with flowable caulking and a rain screen system, allowing for off-site assembly and easy on-site installation, reducing labor costs and ensuring quality seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If caulked joints (wet-seal system) are used for EIFS panels, then thermal protection is improved, but seal quality and endurance deteriorate due to human error and weather exposure
Solution Approach 1:
The patent replaces the manual mechanical caulk application process with a pre-installed resilient seal system that provides automatic mechanical sealing through compression between panels, eliminating human error and weather exposure during application while maintaining thermal protection
Solution Approach 2:
The resilient seals are pre-installed on panels during manufacturing before field assembly, allowing quality control to be performed in a controlled factory environment rather than on-site during installation, ensuring consistent seal quality regardless of weather conditions
2Reliability
If rigid dry seal systems are used for EIFS panels, then seal quality and endurance are improved, but adaptability to construction tolerances deteriorates
Solution Approach 1:
The patent employs resilient (flexible) seal materials instead of rigid seals, allowing the sealing elements to dynamically deform and adapt to varying gap sizes caused by construction tolerances while maintaining continuous contact and sealing effectiveness throughout the range of expected dimensional variations
Solution Approach 2:
The patent changes the physical state of the seal from rigid to resilient, enabling the material to change its deformation parameters to accommodate different gap widths while maintaining sealing pressure and continuity across the full range of construction tolerances
3Ease of manufacture
If on-site caulking is performed using scaffolding or swing stages, then seal application is possible, but labor cost and safety risk increase
Solution Approach 1:
The resilient seals are pre-installed on panels during off-site manufacturing, transferring the sealing operation from high-risk on-site work to controlled factory conditions, eliminating the need for scaffolding or swing stages and significantly reducing labor costs and installation time
Solution Approach 2:
The patent extracts the seal application process from the on-site installation sequence and performs it separately during panel manufacturing, removing the problematic step that requires dangerous heights and skilled labor from the field installation process
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 provides a cost-effective and safer method for sealing exterior wall panels with adaptable seals that accommodate varying tolerances, reducing on-site labor and ensuring high-quality, durable seals, while allowing for easier inspection and installation.
Implementation Method 1
The vertical seal and the horizontal seal may be resiliently deformable
Implementation Method 2
The flowable caulking may be a self-levelling caulking
Data Source
AI summary
An exterior wall panel assembly includes an exterior wall panel, a vertical seal and a horizontal seal. The exterior wall panel has a top, a bottom and opposed sides. The vertical seal is affixed to one side of the exterior wall panel and extends from the top to the bottom of the exterior wall panel. The horizontal seal is affixed to the top of the exterior wall panel. The horizontal seal extends along the top and is spaced inwardly from each opposed side. An exterior wall panel system includes at least two exterior wall panel assemblies and a horizontal splice. The horizontal splice is positioned between horizontal seals on adjacent exterior wall panels and is sealingly attached thereto.