Self-Adhering Sealing Device Without Separation Layer
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Solution Overview
Problem
State-of-the-art self-adhering roofing membranes have high production and installation costs due to the presence of a separation layer between the waterproofing membrane and the adhesive layer, and require additional methods like heat-welding for seam sealing, increasing installation time and costs.
Innovation Solution
A self-adhering sealing device without a separation layer, featuring a waterproofing membrane with a pre-applied adhesive sealant layer composed of elastomers, liquid polyolefin resin, and inert mineral fillers, allowing for direct bonding to the substrate and adhesive bonding of seams, potentially including an electrically conductive layer for breach detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a separation layer is used between the waterproofing membrane and adhesive layer, then the membrane structure stability is improved, but the production cost and device complexity increase
Solution Approach 1:
The patent removes the separation layer from the membrane structure, extracting the element that causes complexity while maintaining the essential functions of the waterproofing membrane and adhesive layer through direct bonding
Solution Approach 2:
The patent merges the waterproofing membrane and adhesive layer into a directly bonded structure, eliminating the intermediate separation layer and reducing overall device complexity while maintaining structural integrity
2Reliability
If heat-welding is used for seam sealing, then the seam sealing reliability is improved, but the installation time and productivity decrease
Solution Approach 1:
The patent replaces the thermal process of heat-welding with a mechanical adhesive bonding system, where the adhesive layer provides seam sealing through chemical bonding rather than thermal fusion, significantly reducing installation time
Solution Approach 2:
The adhesive layer is pre-applied to the membrane during manufacturing, so that seam sealing capability is already in place before installation, eliminating the need for post-installation heat-welding operations
3Ease of operation
If a pre-applied adhesive layer covered with release liner is used, then the ease of operation during installation is improved, but the production cost increases
Solution Approach 1:
The patent removes the release liner component from the system, allowing the adhesive layer to be exposed and functional immediately upon membrane application, eliminating the extra material and processing steps required for release liner removal
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 solution reduces production and installation costs, simplifies the installation process by eliminating the need for heat-welding, and enables self-healing properties and efficient detection of breaches in the waterproofing system.
Implementation Method 1
an adhesive sealant layer (3) covering at least portion of the second primary exterior surface of the waterproofing membrane (2)
Data Source
AI summary
A sealing device includes a waterproofing membrane, an adhesive sealant layer, and optionally a release liner, wherein the adhesive sealant layer includes at least one elastomer, at least one at 25° C. liquid polyolefin resin, and at least one inert mineral filler. An adhesive sealant composition is used to form the adhesive sealant layer. The sealant device may be used to waterproof a substrate and provide a fully-adhered roof system. The adhesive sealant composition may be used to provide a self-healing roofing membrane.