Fastening System With Segmented Adhesive Elements for Residue-Free Reuse
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Solution Overview
Problem
Existing fastening systems face issues with residue left behind and limited durability on non-metallic surfaces, especially when surfaces are dirty, rough, or non-magnetic, and they struggle with repeated attachment and detachment.
Innovation Solution
A fastening system comprising two interconnected functional parts, one film-like and one with adhesive elements, utilizing van der Waals forces for adhesion and an adhesive layer for secure attachment, allowing multiple reuses without residue, even on rough or non-magnetic surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If adhesive fastening systems are used for cyclic attachment, then the fastening can be releasably attached to third-party components, but repeated removal leaves residue and achieves only a limited number of fastening cycles
Solution Approach 1:
The adhesive layer is segmented into numerous individual adhesive elements (nubs) distributed across the fastening system. Each nub acts as an independent adhesion point, allowing the adhesive to distribute stress and maintain bonding over repeated attachment/detachment cycles without degrading into residue
Solution Approach 2:
The adhesive properties are changed by using a specific compound (polyvinylsiloxane) with controlled viscosity and adhesion characteristics. The adhesive elements have specific dimensional parameters (height, width, spacing) that optimize their ability to bond and release repeatedly without leaving residue
2Adaptability or versatility
If magnetic foils are used to attach to metallic third-party components, then direct detachable attachment is achieved, but additional magnets are required for non-metallic components and magnetic foils cannot attach to non-magnetic surfaces
Solution Approach 1:
The fastening system uses a universal adhesive-based attachment mechanism that works on all surface types (metallic, non-metallic, magnetic, non-magnetic, rough, smooth). The adhesive elements provide the same bonding function across diverse substrates, eliminating the need for different attachment systems for different materials
Solution Approach 2:
The magnetic attachment system is replaced with an adhesive system based on molecular adhesion forces. This substitution allows attachment to non-magnetic surfaces while maintaining the desired releasable and reusable characteristics of the fastening system
3Reliability
If self-adhesive masking tape systems are used, then attachment is achieved, but adhesion fails on surfaces contaminated with particles, high ambient humidity, or high surface roughness
Solution Approach 1:
Each adhesive element operates as an independent local bonding unit with specific dimensional and material properties optimized for adhesion. The local characteristics of each nub (size, shape, material composition) are tailored to maintain adhesion under challenging conditions, and the distributed arrangement ensures that failure at one location does not compromise overall attachment
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 system provides reliable, residue-free, and durable attachment to various surfaces, including dirty, rough, and non-magnetic materials, with improved adhesion and peel strength, suitable for decorative and informative applications.
Implementation Method 1
at least one further functional part has a plurality of individual elements which adhere with their free end faces to the surface of the respective third-party component by means of adhesion
Implementation Method 2
utilizing van der Waals forces for adhesion
Data Source
Figure 1
Figure 2~5
Figure 6~8
AI summary
A fastening system is disclosed which can be applied multiple times to third-party components, with a preferably smooth surface, for the purpose of releasable fixing thereon, consisting of at least two functional parts (2, 6) with a flat extent which are connected to one another and of which at least one functional part (2), configured as a sheet, bears information and at least one further functional part (6) has a multiplicity of individual elements (4) which stick with their free end sides (8) on the surface of the respective third-party component by means of adhesion.