Patterned Adhesive Article for Clean Garment Removal
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Solution Overview
Problem
Conventional stretch removable adhesives often require undue force for removal and can leave residue on substrates, especially when bonding to garments that undergo twisting and shearing movements, leading to detachment or permanent adhesion issues.
Innovation Solution
A dual-sided adhesive article with a substantially elastic backing and patterned adhesive coatings on each side, where the adhesives do not overlap when projected onto a common plane, allowing for easy removal by stretching in different directions without damaging the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional stretch removable adhesives are used to bond substrates, then adhesion strength is achieved, but undue force is required for removal and adhesive residue is left on the substrate
Solution Approach 1:
The adhesive is divided into discrete strips rather than being continuous, allowing localized stretching and detachment without requiring force across the entire adhesive area. This segmentation enables easy removal while maintaining strong bonding at the adhesive-substrate interface.
Solution Approach 2:
The adhesive strips are oriented perpendicular to the intended peel direction, creating a dimensional arrangement where stretching action occurs across the width of the adhesive rather than along its length. This dimensional reorientation allows clean detachment without residue.
2Ease of operation
If adhesive is stretched lengthwise for removal, then detachment occurs, but adhesive residue is left on the substrate surface
Solution Approach 1:
The continuous adhesive layer is segmented into discrete strips, allowing the adhesive to be stretched and detached in controlled segments. This prevents adhesive from being forced onto the substrate surface during removal, eliminating residue formation.
Solution Approach 2:
Instead of stretching the adhesive along its length (conventional approach), the adhesive strips are oriented perpendicular to the peel direction, so stretching occurs across the width. This inverted orientation allows clean detachment without residue.
3Reliability
If aggressive adhesive is used to bond to garments, then bonding reliability is improved, but adhesive detachment fails during twisting and shearing movements
Solution Approach 1:
The adhesive is divided into multiple discrete strips rather than a continuous layer, allowing each strip to independently accommodate garment movements. This segmentation prevents stress concentration that would cause detachment during twisting and shearing.
Solution Approach 2:
The adhesive strips are designed with specific dimensional characteristics (width, length, spacing) that allow them to stretch and deform elastically during garment movement while maintaining bonding. The geometric parameters enable the adhesive to absorb movement stresses without failing.
4Ease of operation
If adhesive strips are stretched for removal, then detachment is enabled, but sudden recoil or snap occurs when adhesive fully detaches
Solution Approach 1:
The adhesive is segmented into discrete strips that can stretch independently, preventing the sudden recoil that occurs with continuous adhesive. Each strip stretches and detaches separately, eliminating the snap-back effect.
Solution Approach 2:
The adhesive strips are designed with specific elastic properties and dimensional parameters that allow controlled stretching without excessive recoil. The geometry and material properties are optimized to prevent sudden snap-back during detachment.
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 reliable bonding with aggressive adhesives that remain intact during extreme garment movements, ensuring clean detachment and reducing adhesive residue, while maintaining high stretch characteristics.
Implementation Method 1
a substantially elastic backing and a patterned adhesive coating on each side
Implementation Method 2
a patterned adhesive coating on each side of the backing
Data Source
AI summary
Provided are adhesive articles and assemblies that include a flat and at least partially elastic backing along with a patterned adhesive coating on each side of the backing. When viewed from directions perpendicular to the backing, the adhesive on one side of the backing does not substantially overlap the adhesive on the opposing side of the backing. As a result, it is possible to use a stretch removable adhesive article that uses, for example, an aggressive adhesive to provide a reliable bond but still remove cleanly and easily from delicate substrates that would otherwise be damaged or destroyed if bonded with conventional adhesive constructions.