Connecting Profile Strip Dual Seal Water Ingress
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Solution Overview
Problem
Existing connection profile strips for windows and doors suffer from shadow gaps that allow water penetration, making it difficult to ensure proper bonding and leading to potential facade and structural damage due to undetected detachment or poor adhesion.
Innovation Solution
A connection profile strip with a base leg glued to the facing shell and a flexible band attached to both the base leg and the frame, forming a tight seal, including a primary seal from the elastic strip and a secondary seal from the adhesive tape, which compensates for movements and prevents water ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connection profile strip is used with an attachment shell made of metal or plastic, then the connection between the built-in part and the facing shell is established, but a shadow gap arises between the connecting profile and the facing shell allowing water penetration
Solution Approach 1:
An adhesive tape is introduced as an intermediary sealing element between the connection profile strip and the facing shell. This adhesive tape fills and seals the shadow gap that forms between these components, preventing water penetration while maintaining the structural connection. The adhesive tape acts as a mediator that addresses the harmful gap without compromising the structural integrity of the connection.
2Ease of operation
If the connection profile strip is detached or poorly bonded, then the bonding defect cannot be seen from the outside, but water can penetrate into the facade or building structure causing damage
Solution Approach 1:
The adhesive tape provides a visible visual indicator that reveals the bonding status. When properly applied, the adhesive tape creates a continuous visible seal that allows inspection of the bonding quality from the outside. If the bonding is defective or the profile is detached, the adhesive tape will show discontinuities or gaps, making the defect visible and detectable before water damage occurs.
3Reliability
If window sill transition is inadequately designed, then water can be targeted into the facade or building, but adding sealing components increases device complexity
Solution Approach 1:
The adhesive tape sealing function is merged with the existing connection profile strip structure. The adhesive tape is applied directly to the connection profile strip, combining the structural connection function with the sealing function in a single integrated solution. This merging approach provides reliable water protection without significantly increasing device complexity, as the adhesive tape is a simple additive component that integrates seamlessly with the existing profile structure.
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 dual-seal system effectively prevents water penetration, ensuring a secure bond and reliable sealing even with movements, thus protecting the facade and structural integrity.
Implementation Method 1
the base leg of the connection profile strip is glued to the facing shell (made of aluminum or plastic)
Implementation Method 2
because of the flexible tape glued to the frame of the window or door, movements that occur between the frame of the window or door, the facing shell and/or the facade can be compensated for
Data Source
Figure 1
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AI summary
A connecting profile strip (1) comprises a base leg (2) and a plastering leg (3). An elastic strip (9) is provided on the base leg (2), which rests against a facing (22) of a frame (21) of a window or door, forming a primary seal (30). The base leg (2) of the connecting profile strip (1) is bonded to the facing (22) by means of an elastic adhesive tape (12). A strip (15) is attached to the base leg (2), the free edge of which is bonded to the frame (21) by means of an adhesive layer (16), forming a secondary seal (40).