Barrier Sheet With Thermoplastic Elastomer Textile Layer
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Solution Overview
Problem
Barrier sheets with textile protective layers are prone to damage during installation due to uneven surfaces and mechanical stress, leading to potential leaks, whereas plastic film-based sheets show less damage due to high elasticity, adapting to uneven grounds without tearing.
Innovation Solution
Incorporating a textile protective layer made of thermoplastic elastomer with high resilience, similar to plastic films, to enhance the barrier sheet's elasticity and compliance, allowing it to adapt to uneven surfaces and reduce damage during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a textile protective layer is added to the barrier sheet, then the tear strength and mechanical protection are improved, but the elasticity and adaptability to uneven surfaces deteriorate
Solution Approach 1:
The barrier sheet combines a plastic film layer with a textile protective layer to create a composite material that integrates the high elasticity of plastic with the high tear strength of textile, achieving both mechanical protection and adaptability to uneven surfaces
Solution Approach 2:
The textile layer parameters (thread density, grid spacing, basis weight) are optimized to balance mechanical strength and elasticity, with specific ranges provided to achieve the desired combination of tear resistance and surface adaptability
2Strength
If a textile protective layer is used, then the protection against mechanical damage is improved, but the compliance and ease of installation worsen
Solution Approach 1:
The composite structure of plastic film and textile layer provides both mechanical strength and compliance, making the barrier sheet easier to install by allowing it to conform to irregular surfaces and adapt to installation conditions
3Adaptability or versatility
If plastic film is used without textile layer, then the elasticity and adaptability are improved, but the tear strength and mechanical protection deteriorate
Solution Approach 1:
The barrier sheet uses a composite of plastic film and textile layer where the plastic provides elasticity and the textile provides tear strength, combining the advantages of both materials
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 thermoplastic elastomer textile layer improves the barrier sheet's ability to stretch and conform to uneven surfaces, reducing damage and ensuring a tight seal against water and water vapor, even under stress, while simplifying the installation process by allowing the sheet to flow and fit tightly around pipe ends and lines without the need for multiple sealing rings.
Implementation Method 1
the textile layer consists of a thermoplastic elastomer and that in the elastic area the textile layer has a resilience that corresponds to at least 50% of the resilience of the plastic film
Data Source
Figure 1
AI summary
According to the invention, in multilayer barrier membranes with a flexible layer of plastic film and at least one further textile layer, the materials are selected such that the textile layer has a similar flexibility to the plastic layer.