Tamper-Evident Security Element With Deformable Adhesive Layer
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Solution Overview
Problem
Existing security labels and adhesive tapes face challenges in achieving a balance between strong adhesive strength and residue-free removal, particularly on different surfaces, making it difficult to develop a universally applicable solution.
Innovation Solution
Incorporating a deformable layer between the carrier substrate and the self-adhesive layer, along with a partial separating layer, which allows for high adhesive strength while enabling residue-free removal and evidence of tampering detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If strong adhesives are used to ensure high adhesive strength, then the adhesive strength is improved, but residue-free removal becomes difficult
Solution Approach 1:
The adhesive system is segmented into multiple functional layers: a self-adhesive layer (3) providing strong adhesion to the substrate, a deformable layer (6) that deforms during removal to prevent adhesive transfer, and a partial release layer (5) that facilitates clean separation. This segmentation allows each layer to perform its specific function without compromising the others.
Solution Approach 2:
The deformable layer (6) acts as an intermediary between the self-adhesive layer (3) and the carrier substrate (2). During removal, this layer deforms and absorbs the stress, preventing the adhesive from transferring to the carrier substrate and ensuring residue-free removal while maintaining strong initial adhesion.
2Object-generated harmful factors
If weak adhesives are used to ensure residue-free removal, then residue-free removal is improved, but adhesive strength becomes insufficient
Solution Approach 1:
The adhesive system is divided into specialized layers with distinct functions. The self-adhesive layer (3) is optimized for strong bonding, while the deformable layer (6) and partial release layer (5) are optimized for clean removal. This segmentation allows the use of strong adhesives without compromising residue-free removal.
Solution Approach 2:
The deformable layer (6) changes its physical parameters during the removal process. It transitions from a compliant state during application to a deforming state during removal, absorbing stress and preventing adhesive transfer. This dynamic parameter change enables both strong adhesion and clean removal.
3Object-generated harmful factors
If specialized adhesives are adjusted to match specific substrates, then residue-free removal is improved, but universality is reduced
Solution Approach 1:
The security element employs a multi-layer adhesive system that functions universally across different substrate types. The self-adhesive layer (3) provides broad substrate compatibility, while the deformable layer (6) and partial release layer (5) ensure consistent residue-free removal performance regardless of the substrate material.
Solution Approach 2:
The deformable layer (6) adapts its deformation characteristics based on the removal conditions and substrate type, providing a universal solution that works across different applications without requiring substrate-specific adhesive formulations.
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 provides a security element with consistent adhesive performance across various surfaces, allowing for reliable removal without residue and visible evidence of manipulation, enhancing the security and authenticity verification of products.
Implementation Method 1
The deformable layer (6) has a greater elasticity than the partial release layer (5) and/or greater elasticity than the carrier substrate (2)
Data Source
Figure 1~3
Figure 4~5
Figure 6~7
AI summary
The invention relates to a security element (1), in particular a security label or security tape, with tamper detection, comprising a carrier substrate (2) and a self-adhesive layer (3) arranged on the carrier substrate (2). It is provided that a partial release layer (5) is formed on the side (4) of the carrier substrate (2) facing the self-adhesive layer (3), and that a deformable layer (6) is formed between the carrier substrate (2) and the self-adhesive layer (3) and between the partial release layer (5) and the self-adhesive layer (3). The deformable layer (6) has greater elasticity compared to the partial release layer (5) and/or compared to the carrier substrate (2). Furthermore, the security element (1) can be attached to a surface (7) of an object (8) by means of the self-adhesive layer (3).