Self-Adhering Sealing Device with Universal Adhesive Layer
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Solution Overview
Problem
Current self-adhering waterproofing and roofing membranes have high production and installation costs due to the presence of a fiber-based separation layer and require time-consuming heat-welding or special sealing tapes for seam sealing, increasing overall costs and installation time.
Innovation Solution
A self-adhering sealing device comprising a waterproofing membrane with a superimposed sealant and adhesive layer, where the seams between overlapping edges are adhesively bonded using the same adhesive as for substrate bonding, eliminating the need for additional layers and heat-welding, and featuring a composition of elastomer, liquid polyolefin resin, and inert mineral filler.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fiber-based separation layer is used in self-adhering membranes, then the membrane structure is stabilized and adhesive placement is facilitated, but production costs and installation costs increase
Solution Approach 1:
The patent removes the fiber-based separation layer from the membrane structure, extracting the unnecessary component that was causing increased costs. The adhesive is applied directly to the membrane surface without requiring a separate separation layer, thereby reducing production costs while maintaining the necessary structural stability through the adhesive layer itself.
2Reliability
If heat-welding or special sealing tapes are used for seam sealing, then waterproof sealing is achieved, but installation time and overall costs increase
Solution Approach 1:
The patent combines the adhesive function with the sealing function by applying the same adhesive material to both the membrane surface and the overlapping seams. This merging of functions eliminates the need for separate heat-welding equipment or special sealing tapes, reducing installation time and costs while maintaining reliable waterproof sealing through the adhesive bond.
3Strength
If heat-welding is used for seam sealing, then strong seam bonding is achieved, but additional equipment and process complexity are required
Solution Approach 1:
The patent employs a universal adhesive material that serves multiple functions: adhering the membrane to the substrate and bonding the overlapping seams together. This multi-functional approach eliminates the need for separate heat-welding equipment and processes, reducing device complexity while achieving strong seam bonding through the adhesive's inherent bonding capabilities.
4Reliability
If different materials are used for substrate adhesion and seam sealing, then optimal performance for each function is achieved, but material costs and application complexity increase
Solution Approach 1:
The patent uses the same adhesive material for both substrate adhesion and seam sealing, achieving a universal solution that reduces material costs and simplifies the application process. The adhesive is formulated to provide optimal bonding performance for both functions, eliminating the need to manage multiple different materials and their respective application requirements.
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 provides fully-adhered waterproofing and roof systems with reduced production and installation costs, offering high initial and long-term adhesive bond strength, and simplified installation by using the same adhesive for both substrate and seam bonding.
Implementation Method 1
an adhesive layer (4) covering a portion of the outer major surface of the sealant layer (3)... wherein the sealant layer (3) is composed of an adhesive sealant composition
Data Source
AI summary
A sealing device including a waterproofing membrane, a sealant layer covering at least a portion of the second primary exterior surface of the waterproofing membrane and an adhesive layer covering a portion of the outer major surface of the sealant layer facing away from the second primary exterior surface of the waterproofing membrane, wherein the sealant layer is composed of an adhesive sealant composition comprising at least one elastomer, at least one at 25° C. liquid polyolefin resin, and at least one inert mineral filler. A method produces a sealing device, a method waterproofs a substrate, and a waterproofed substrate.