Fastening method
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Solution Overview
Problem
Conventional fastening systems, such as nails and double-sided adhesive strips, leave unsightly holes or damage surfaces when removed, and are unsuitable for heavy objects due to limited load-bearing capacity.
Innovation Solution
A fastening system using an application agent that forms a smooth adhesion surface on rough surfaces, allowing a functional part with a microstructured functional surface to be attached via Van der Waals forces, which can be removed without residue and repainted, and includes a film-like functional part made of silicone material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If nails or screws are used as conventional fastening means, then strong fastening capability is achieved, but unsightly holes are produced in the wall when removed
Solution Approach 1:
The patent replaces mechanical fastening systems (nails, screws) with an adhesive-based fastening system. The adhesive strip with pressure-sensitive adhesive bonds the base plate to the wall surface without penetration, eliminating hole formation while maintaining fastening capability through chemical adhesion rather than mechanical interlocking.
Solution Approach 2:
The patent introduces an adhesive strip as an intermediary element between the base plate and the wall. This adhesive layer acts as a mediator that transfers loads without creating holes, allowing the fastening system to be removed cleanly by peeling off the adhesive strip rather than extracting mechanical fasteners.
2Object-affected harmful factors
If double-sided adhesive strips are used to avoid holes, then wall damage is reduced, but load-bearing capacity is restricted and not suitable for heavy objects
Solution Approach 1:
The patent segments the fastening system into multiple functional components: a base plate for structural support, an adhesive strip for bonding, and optionally a functional element (hook, loop, etc.). This segmentation allows the adhesive strip to be optimized for clean removal while the base plate provides the necessary mechanical strength and load-bearing capacity for heavy objects.
Solution Approach 2:
The patent employs composite construction by combining different materials with complementary properties: a rigid base plate material (such as metal or hard plastic) for strength, and a pressure-sensitive adhesive material for bonding and clean removal. This composite approach enables the system to simultaneously achieve high load-bearing capacity and damage-free removal.
3Strength
If adhesive strength is increased to improve holding power, then load-bearing capacity improves, but removal becomes difficult and may leave residue
Solution Approach 1:
The patent applies dynamic characteristics to the adhesive by selecting pressure-sensitive adhesive materials that exhibit time-dependent bonding behavior. The adhesive provides strong initial bonding for load-bearing applications but allows for controlled removal through peeling forces that overcome the adhesive bonds without leaving residue, enabling both strong holding and easy removal.
Solution Approach 2:
The patent utilizes parameter changes in the adhesive material properties, specifically selecting pressure-sensitive adhesives with appropriate tack and cohesion characteristics. These adhesive parameters are optimized to provide sufficient bond strength for heavy objects while maintaining reversibility for clean removal, balancing holding power with removal ease through material parameter selection.
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 residue-free removal and repainting of fastening systems, suitable for various surfaces including rough concrete and wallpaper, and supports large securing surfaces with high load-bearing capacity.
Implementation Method 1
an application agent, which is additionally applied to the wall from the outside, forms an adhesion surface that is smoother relative to the rough wall after curing due to its material-specific inherent surface tension
Implementation Method 2
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 method for attaching a fastening system is disclosed. The fastening system has 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. The method includes applying an agent onto the surface, allowing the application agent to cure so as to form a smooth adhesion surface, and attaching the functional part via microstructures of one functional surface to the adhesion surface of the cured application agent.