Facade Sealing Foil Offset Drainage
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Solution Overview
Problem
Existing facade constructions require additional fastening profiles and separate attachment parts for sealing foils, complicating installation and increasing costs.
Innovation Solution
The sealing foil is directly fastened to the support profile and/or inner seal via a foil foot, eliminating the need for additional fasteners and allowing for simplified assembly, with the option to be offset for improved drainage and ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional fastening profiles and separate attachment parts are used for sealing foils, then the sealing function is ensured, but the installation process becomes complicated and costs increase
Solution Approach 1:
The sealing foil is integrated directly into the support profile through a foil foot that is formed as one piece with the support profile, eliminating the need for separate fastening profiles and attachment parts. This merging of components simplifies the installation process while maintaining the sealing function.
Solution Approach 2:
The support profile includes an integrated foil foot that automatically secures the sealing foil in place during installation. The foil foot acts as a built-in attachment mechanism that requires no additional fasteners or separate components, allowing the sealing system to be self-sufficient.
2Reliability
If additional fastening profiles and separate attachment parts are used for sealing foils, then the sealing function is ensured, but costs increase
Solution Approach 1:
The sealing foil is integrated directly into the support profile through a foil foot that is formed as one piece with the support profile, eliminating the need for separate fastening profiles and attachment parts. This merging of components simplifies the installation process while maintaining the sealing function.
Solution Approach 2:
The support profile serves multiple functions: it provides structural support, integrates the sealing foil through the foil foot, and eliminates the need for separate fastening components. This multi-functionality reduces the total quantity of materials and components required, thereby reducing costs.
3Reliability
If the sealing foil is attached at the front face of the support profile, then the sealing is direct, but drainage is compromised
Solution Approach 1:
The foil foot is offset from the front face of the support profile by a specific distance (5-15 mm), creating a local variation in positioning that enables drainage functionality. This offset positioning allows water to drain away from the sealing interface while maintaining effective sealing at the critical interface between the sealing foil and the support profile.
Solution Approach 2:
The sealing foil is positioned in three-dimensional space with an offset from the front face of the support profile, utilizing the depth dimension to achieve both sealing and drainage functions. This spatial positioning creates a drainage path behind the sealing plane while maintaining sealing effectiveness at the interface.
Data Source
Figure 1
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AI summary
The unit has an inner gasket (2) arranged at a carrying profile (1), which serves as a post or latch profile. A press profile (7) i.e. press strip, is fixed at the carrying profile for pressing a facade component (4) i.e. insulation glass pane, and a junction channel (5) at the carrying profile. A sealing film (3) is held between the carrying profile and the gasket. The gasket comprises a sealing base (15) at a connecting rod (18), and a recess for receiving of a holding member that is provided at the film. The gasket comprises another recess for ventilation and dewatering of a folding space.