Solid Wetting Adhesive for Reusable Marker Board
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Solution Overview
Problem
Traditional adhesives either harden permanently, losing their adhesive properties upon removal, or degrade with repeated use due to their liquid or gel state, leading to residue and reduced adhesion.
Innovation Solution
Development of solid wetting adhesives with lower surface energy and specific hardness characteristics that allow them to spread and adhere to high surface energy substrates without hardening, enabling repeated removal and reapplication without residue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional liquid or gel adhesives are used to achieve initial adhesion through spreading, then adhesion strength is improved, but the adhesive degrades with repeated removal and reapplication due to residue and loss of adhesive properties
Solution Approach 1:
The patent applies parameter changes by transitioning the adhesive from liquid/gel state to solid state, while maintaining specific surface energy characteristics that enable wetting behavior. This parameter change allows the adhesive to spread initially for strong bonding, then resist degradation during repeated removal and reapplication cycles, resolving the contradiction between initial adhesion strength and long-term reliability.
2Ease of operation
If pressure sensitive adhesive remains in gel state to allow repeated removal and reapplication, then ease of operation is improved, but adhesive strength decreases with each reapplication due to residue
Solution Approach 1:
The patent changes the physical state parameter from gel to solid, combined with controlling surface energy parameters. This enables the adhesive to maintain its shape and resist residue formation during repeated operations, while still achieving strong adhesion through controlled wetting spreading, thus improving both ease of operation and maintaining adhesive strength.
3Strength
If adhesive hardens to secure wetting force in place, then adhesion strength is improved, but the adhesive bond is permanently destroyed upon removal
Solution Approach 1:
The patent applies parameter changes by selecting a solid state adhesive with specific surface energy characteristics that enable wetting. Unlike hardened adhesives that permanently bond, this solid adhesive maintains reversible bonding capability through controlled wetting and non-wetting states, allowing strong initial adhesion followed by clean removal and repeated reapplication without permanent destruction of the adhesive bond.
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 solid wetting adhesives provide strong, durable adhesion and can be repeatedly removed and reapplied without loss of adhesiveness, suitable for various applications including vertical suspension and flexible marker boards.
Implementation Method 1
Wetting is a type of adhesion where two materials adhere to one another because one of the materials 'spreads out' over the other material
Implementation Method 2
a solid generally demonstrates a desire to return to its original shape
Data Source
AI summary
A marker board system having a dark colored, low hardness, low surface energy solid silicone sheet to wet to a vertically oriented high surface energy substrate on a smooth, flat back-side of the solid silicone sheet. A front-side of the solid silicone sheet is able to be written upon by brightly colored marker ink. The brightly colored marker ink is able to be easily erased from the front-side of the solid silicone sheet after being written upon the front-side of the solid silicone sheet. The front-side is roughened to diminish beading of the brightly colored marker ink when written on the front-side.