Intermediate layer for a lining structure
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Solution Overview
Problem
Existing intermediate layers in covering constructions fail to effectively decouple tile coverings from the subsurface, allowing stress and sound transmission, leading to potential cracking and inadequate sound insulation.
Innovation Solution
A two-layered intermediate layer system where the first layer is a mesh fabric with a self-adhesive plastic layer covering its entire surface, preventing tile adhesive penetration and ensuring mechanical decoupling, combined with optional fiber reinforcement and a third mesh layer for enhanced rigidity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the mesh fabric is embedded in tile adhesive to fix it to the substrate, then the mesh fabric cannot slip during assembly, but movements in the subsurface are still transferred to the tile covering and sound transmits directly
Solution Approach 1:
The intermediate layer is segmented into two distinct layers: a first layer (mesh fabric) for mechanical anchoring and a second layer (plastic layer) for decoupling and sound insulation. This segmentation allows each layer to perform its specific function independently, preventing both slippage and stress/sound transmission.
Solution Approach 2:
The second plastic layer acts as an intermediary between the mesh fabric and the tile adhesive. It prevents direct contact between the adhesive and the substrate, thereby blocking the transmission path for stresses and sounds while still allowing the mesh fabric to be mechanically anchored.
2Stability of the object's composition
If only adhesive is applied on one side and exclusively on the threads, then the mesh fabric can be fixed, but the tile adhesive presses through the meshes and embeds the mesh firmly in the bond, preventing mechanical decoupling
Solution Approach 1:
The intermediate layer is segmented into two distinct layers: a first layer (mesh fabric) for mechanical anchoring and a second layer (plastic layer) for decoupling and sound insulation. This segmentation allows each layer to perform its specific function independently, preventing both slippage and stress/sound transmission.
Solution Approach 2:
The second layer is designed as a flexible plastic film or sheet that covers the entire surface of the mesh fabric. This thin film structure is sufficient to prevent adhesive penetration and provide decoupling, while remaining flexible enough to accommodate substrate movements without transmitting stresses.
3Strength
If the second layer is elastic plastic adhesive, then it provides bonding, but dimensional stability is insufficient without fiber reinforcement
Solution Approach 1:
The second layer is designed as a composite material combining elastic plastic adhesive with fiber reinforcement. The plastic matrix provides bonding and flexibility, while the embedded fibers provide dimensional stability and prevent excessive deformation, creating a material that exhibits both adhesive properties and structural stability.
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 solution effectively decouples tile coverings from the subsurface, preventing stress transmission and enhancing sound insulation by using a self-adhesive plastic layer with fiber reinforcement and an optional third mesh layer for increased rigidity and stability.
Implementation Method 1
The adhesive layer allows the intermediate layer to be firmly bonded to the subsurface
Implementation Method 2
the second layer is formed over the entire surface, so that a tile adhesive that is applied to the mesh fabric does not penetrate through the Mesh fabric can extend through to the ground
Implementation Method 3
The second layer is reinforced with fibers. The fiber reinforcement is preferably in the form of a lattice, which has finer threads compared to the lattice fabric of the first layer. The fiber reinforcement of the second layer improves the dimensional stability.
Data Source
Figure 1
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AI summary
The interlayer (1) has a first layer (3) comprising main sides and designed as a lattice fabric with crossing threads (6). A second layer (7) is arranged on one of the main sides. The second layer has an adhesive layer and a planar plastic layer, and a third layer is arranged on another main side. The adhesive layer is made from butyl adhesive, acrylate adhesive or cold adhesive. The second layer is provided with a fiber reinforcement, where mesh size of the lattice fabric is smaller than 5mm. The first and third layers are connected with one another over a distance holder.