Joint Sealing Tape With Drainage Layer
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Solution Overview
Problem
Existing joint sealing tapes do not effectively manage water ingress, leading to increased thermal conductivity and reduced thermal insulation due to moisture retention.
Innovation Solution
A joint sealing tape with a drainage layer, preferably an open-cell foam, is integrated as an inner layer to collect and drain water under gravity, combined with drainage means to guide water out of the sealed area, ensuring quick drying and maintaining thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If joint sealing tape is used to seal components, then sealing against drafts and driving rain is improved, but water ingress occurs leading to moisture retention
Solution Approach 1:
The joint sealing tape is divided into multiple functional layers: a sealing layer for draft and rain protection, and a separate drainage layer for water management. This segmentation allows the sealing function and drainage function to operate independently and simultaneously, resolving the contradiction between maintaining seal integrity and preventing water accumulation.
Solution Approach 2:
The drainage layer acts as an intermediary component between the sealing layer and the joint cavity. It intercepts and channels water that penetrates the sealing layer, preventing it from accumulating in the joint space while maintaining the overall sealing effectiveness.
2Loss of energy
If water is retained in the joint sealing tape, then thermal insulation is reduced due to increased thermal conductivity
Solution Approach 1:
The drainage layer extracts and removes water from within the joint sealing tape structure. By actively channeling water out of the joint cavity, the system prevents moisture accumulation that would otherwise increase thermal conductivity and reduce thermal insulation performance.
Solution Approach 2:
The system converts the harmful effect of water ingress into a beneficial drainage flow path. Instead of allowing water to randomly accumulate and reduce insulation, the drainage layer guides water along controlled pathways to exit points, transforming the potential harm into a managed drainage process that preserves thermal performance.
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 drainage layer and means effectively remove unwanted water, preventing moisture retention and enhancing thermal insulation by allowing the joint to dry quickly, thus addressing the issue of water ingress and maintaining thermal performance.
Implementation Method 1
the drainage layer is designed in such a way that the water is drained off under the influence of gravity
Implementation Method 2
The drainage layer has an at least predominantly open-cell foam which is at least partially hydrophobic
Data Source
Figure 1
AI summary
Sealing tape (10) comprising at least three layers (12, 14, 16, 18, 20), wherein at least one layer (12) is designed as a drainage layer (12) for capturing and directed drainage of water (22) from the sealing tape (10).