Foam Wall Adhesive Joining for Racking Strength
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Solution Overview
Problem
Existing foam wall structures face challenges in modification and repair at construction sites without compromising their structural integrity, particularly in terms of racking strength, and require methods that are not labor or material intensive.
Innovation Solution
The use of high solids-containing chemically-curing polymeric structural adhesive compositions, applied in apertures within the foam layer or between the foam layer and frame members, to maintain or restore the structural integrity of foam wall structures during modification and joining of adjacent walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If foam wall structures are modified at construction sites to fit adjacent structures or repair damage, then adaptability and ease of repair are improved, but racking strength and structural integrity are compromised
Solution Approach 1:
The patent applies preliminary action by pre-attaching foam panels to frame members in a controlled manufacturing facility before the wall structures are transported to the construction site. This preliminary assembly ensures proper fit and structural integrity are established beforehand, reducing the need for on-site modifications that would compromise racking strength.
Solution Approach 2:
The patent uses an intermediary approach by designing frame members with predetermined attachment points and configurations that facilitate easy connection between adjacent wall structures. These pre-configured interfaces act as intermediaries that enable adaptability without requiring damaging modifications to the foam panels, thus preserving racking strength.
2Manufacturing precision
If foam wall structures are manufactured with high precision in controlled facilities, then manufacturing precision and consistency are improved, but ease of modification and repair at construction sites deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the wall structure into modular components (frame members, foam panels, and connection elements) that can be precisely manufactured separately in controlled facilities and then easily assembled or modified on-site. This modular segmentation maintains manufacturing precision while enabling ease of repair through simple component replacement or reconfiguration.
Solution Approach 2:
The patent uses local quality by providing specific local features on foam panels and frame members, such as predetermined attachment zones or reinforcement areas, that are precisely manufactured in controlled facilities. These localized features enable easy on-site modification and repair at specific locations without affecting the overall precision and integrity of the entire wall structure.
3Ease of operation
If traditional modification methods are used on foam wall structures, then ease of operation is improved, but the foam layer or foam panel is damaged
Solution Approach 1:
The patent applies self-service by incorporating self-aligning features and self-contained attachment mechanisms into the foam panels and frame members. These features enable workers to perform modifications and repairs easily on-site without specialized tools or techniques that could damage the foam, thus maintaining both ease of operation and structural integrity.
Solution Approach 2:
The patent uses parameter changes by providing foam panels with varied local properties, such as different densities or stiffness values in specific zones, that facilitate easy on-site modification in certain areas while maintaining structural integrity in critical load-bearing zones. This parameter variation enables ease of operation for modifications without compromising overall reliability.
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 approach allows for effective modification and joining of foam wall structures while maintaining or achieving comparable racking strength to unmodified structures, ensuring consistent insulation and ease of installation of electrical and plumbing components.
Implementation Method 1
a cured structural adhesive disposed in at least one of (i) an aperture located within the foam layer, and (ii) an aperture located between the foam layer and a frame member, wherein the cured structural adhesive is the cured product of a high solids-containing chemically-curing polymeric structural adhesive composition
Data Source
AI summary
Modified and connected foam wall structures and methods for making them are described. The wall structures include a frame, a foam panel attached to the frame, a foam layer disposed in a cavity defined by the frame, and a structural adhesive. The structural adhesive may be disposed in at least one of: (A) an aperture located within the foam layer, and (B) an aperture located between the foam layer and a frame member. In some cases, a cured structural adhesive is located between connecting members of adjacent foam wall structures.