Sprayable Adhesion Layer for Removable Wall Fastening Without Damage
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Solution Overview
Problem
Conventional fastening systems for attaching objects to walls often leave unsightly holes or damage the wall when removed, and double-sided adhesive strips can cause damage to both the object and the wall, especially when trying to relocate or remove them.
Innovation Solution
A fastening system that applies a smooth adhesion surface using a sprayable application agent to create a low roughness surface, allowing for a releasable attachment using Van der Waals forces, which can be removed without residue and painted over, and includes a microstructured functional part for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If double-sided adhesive strips are used to attach objects to walls, then the attachment can be made without holes, but the adhesive strength is restricted and cannot support heavy objects
Solution Approach 1:
The patent introduces a removable adhesive layer as an intermediary between the functional object and the wall surface. This adhesive layer can be applied and removed without damaging the wall, unlike conventional double-sided adhesive strips that permanently bond to the wall. The intermediary adhesive layer enables strong attachment during use while allowing clean removal afterward.
2Strength
If conventional fastening means like nails or screws are used, then strong attachment is achieved, but unattractive holes are produced in the wall requiring renovation
Solution Approach 1:
The patent replaces the mechanical fastening system (nails, screws, dowels that physically penetrate the wall) with an adhesive bonding system. The adhesive layer chemically bonds to the wall surface without mechanical penetration, eliminating holes and damage while maintaining attachment strength. This substitution transitions from mechanical to chemical bonding mechanisms.
3Strength
If large adhesive surfaces are used to increase load-bearing capacity, then heavy objects can be supported, but the size of the fastening system increases
Solution Approach 1:
The patent changes the parameters of the adhesive layer, specifically its thickness and material composition, to achieve high bonding strength without requiring large surface areas. By optimizing the adhesive's mechanical and chemical properties, the system achieves high load-bearing capacity with compact dimensions.
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
Enables secure and removable attachment to rough surfaces like walls and skin, suitable for heavy objects, without damaging the surface, and allows for easy removal and repainting, with the option to integrate transponder technology for monitoring applications.
Implementation Method 1
forms a smooth adhesion surface, in particular after curing... due to its material-specific inherent surface tension
Implementation Method 2
which preferably takes place by means of adhesion, in which an 'adhesive' bonding of the functional surface to the adhesion surface on the surface of a building wall often takes place using so-called Van der Waals forces
Data Source
AI summary
A fastening system having at least of an application agent which, when viewed in relation to a surface to which it is applied, forms a smooth adhesion surface, in particular, after curing, and a functional part which, on its side facing the adhesion surface, has a functional surface which can be secured to the adhesion surface in a releasable manner.