Sealing Web Edge Micro-perforations for Adhesive Setting
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Solution Overview
Problem
Existing vapor-blocking sealing webs face challenges in setting with water-soluble adhesives and mortars due to their vapor-retarding properties, which hinder solvent diffusion, leading to issues with adhesion and stability.
Innovation Solution
Incorporating micro-perforations on the edges of the sealing web to allow solvent diffusion during setting, which are then securely closed by the connecting means, ensuring rapid adhesion and a vapor-tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vapor-retarding or vapor-barrier film is used to prevent water and solvent diffusion, then the vapor-retarding function is improved, but the adhesive or bonding agent cannot set properly
Solution Approach 1:
The sealing membrane is divided into different zones: a vapor-tight central area and edge regions with micro-perforations. This segmentation allows the membrane to simultaneously provide vapor protection in the main area while enabling adhesive setting at the edges through controlled solvent diffusion pathways.
Solution Approach 2:
Different regions of the sealing membrane have different properties: the central area maintains full vapor-retarding properties, while the edge areas contain micro-perforations that allow controlled solvent diffusion. This local differentiation resolves the contradiction by providing both vapor protection and adhesive setting capability in appropriate locations.
2Ease of manufacture
If cutouts are created in the sealing membrane to allow adhesive setting, then the adhesive can set properly, but the vapor-retarding function is compromised
Solution Approach 1:
Instead of creating large cutouts, the invention uses micro-perforations (porous structure) at the edges of the sealing membrane. These microscopic openings allow sufficient solvent diffusion for adhesive setting while being too small to compromise the overall vapor-retarding function of the membrane.
Solution Approach 2:
The membrane is segmented into vapor-tight regions and edge regions with micro-perforations. This segmentation allows the vapor-retarding function to be maintained in the main area while enabling adhesive setting at the edges through the micro-perforated zones.
3Productivity
If micro-perforations are provided at the edges, then rapid adhesion occurs through solvent diffusion, but the vapor-tight seal must be ensured after bonding agent sets
Solution Approach 1:
The micro-perforations are pre-created at the edges to enable rapid adhesive setting through solvent diffusion. After the adhesive sets, the bonding agent itself seals the micro-perforations, creating a vapor-tight connection between the membrane and the bonded substrate or overlapping membrane.
Solution Approach 2:
The micro-perforations initially appear to compromise the vapor seal, but they actually enable rapid adhesion through solvent diffusion. Once the adhesive sets, these same micro-perforations are sealed by the bonding agent, converting the potential harm (loss of vapor tightness) into a benefit (rapid setting that creates a stronger seal).
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 micro-perforations enable quick and secure adhesion of the sealing web to the substrate, allowing solvent diffusion during setting and ensuring a vapor-tight seal after the connecting means has set, preventing slipping or detachment.
Implementation Method 1
the micro-perforations enable quick and secure adhesion of the sealing web to the substrate, allowing solvent diffusion during setting
Implementation Method 2
after the bonding agent has set, it creates a vapor-tight seal at the micro-perforations, as this is possible with such micro-perforations
Data Source
Figure 1
AI summary
The path (1) has edge-side slots (4, 5) provided at two opposite edges (2, 3) of the path such that diffusion of a solvent is enabled during setting of a connection unit, and the slots are sealed by the connection unit in a vapor-inhibitive or vapor-blocking manner after setting the connection unit. The slots are formed from individual recesses and individual incisions. Slot-like incisions run parallel to the edges of the path, where a distance between the slot-like incisions corresponds to a length of one of the slot-like incisions. The path is made of a film composite.