Segmented Flexible Hardgood for Damage-Free Adhesive Removal
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Solution Overview
Problem
Existing peelable adhesive products often fail to work effectively on painted and rough surfaces, exhibit low shear strength, and can cause damage when removed, requiring multiple steps or complex constructions.
Innovation Solution
The development of an adhesive article with a flexible body comprising linear segments and connector elements, allowing for anisotropic flexibility, which reduces the peel force required for removal and enhances shear strength, enabling easier and damage-free removal from various surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid hardgood is used to mount objects, then the mounting device can hold weight, but the peel force necessary to remove the mounting device increases
Solution Approach 1:
The body is divided into multiple linear segments connected by connector elements, creating a flexible structure that can bend and deform during removal. This segmentation allows the mounting device to maintain structural integrity for holding weight while reducing the peak peel force through progressive deformation of the segments
Solution Approach 2:
The patent changes the mechanical parameters of the body by using a flexible material with specific modulus and creating a segmented structure. This transforms the body from a rigid component (high peel force) to a flexible component (lower peel force) while maintaining sufficient holding power through the adhesive and overall geometry
2Force
If the backing is made softer and more elastic to reduce peel force, then removal becomes easier, but the construction may require increased thickness which increases damage potential
Solution Approach 1:
By segmenting the body into linear elements connected by connectors, the patent achieves flexibility and low peel force without requiring increased overall thickness. The segmented structure allows thin individual segments to collectively provide the desired mechanical behavior
Solution Approach 2:
The patent replaces the traditional approach of using material softness (elasticity) to reduce peel force with a structural approach (segmentation). This substitution allows achieving low peel force through geometric configuration rather than material property changes that would require thicker construction
3Adaptability or versatility
If existing peelable products are used on painted or rough surfaces, then mounting can be achieved, but the products often do not work well and can cause damage during removal
Solution Approach 1:
The patent modifies the mechanical parameters of the body (flexibility, segment geometry, connector design) to adapt to different surface conditions. The flexible segmented structure conforms to surface irregularities and distributes removal forces, preventing damage to painted or rough surfaces
Solution Approach 2:
The segmented structure allows different parts of the body to interact differently with the surface during removal. The linear segments and connectors create localized deformation zones that protect the substrate while maintaining overall adhesive contact
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 adhesive article achieves higher shear strength, improved performance on painted and rough surfaces, and easier removal without damaging the substrate, allowing it to hold more weight and be used on delicate surfaces like paper or textured surfaces like wallpaper.
Implementation Method 1
an adhesive layer 140 can be disposed on a major surface of the flexible body 110
Data Source
AI summary
The present disclosure provides adhesive mounting articles that can be removed from surfaces without damage by having reduced contribution of a hardgood to the peel force generated by the adhesive article during removal. In some instances, this can be accomplished by a hardgood that is flexible in a peel direction and rigid in a weight hanging direction. Such hardgoods may include a plurality of minimally connected body segments arranged about the transverse axis of the hardgood body.