Microstructured Label Surface for Wet and Dry Grip Enhancement
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Solution Overview
Problem
Containers with condensation or liquids on their surfaces become slick, making them difficult to hold due to reduced gripping ability, and existing solutions like coatings or adhesives may not provide sufficient friction without affecting aesthetics.
Innovation Solution
A label or contact surface with microstructured features, including a base layer and an adhesive layer, featuring specific micro-feature dimensions and arrangements that enhance friction without being visible to the naked eye, providing improved grip and reduced slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If condensation or liquid is present on the container surface, then the surface becomes slick, but gripping ability decreases
Solution Approach 1:
The patent applies segmentation by creating a microstructured surface with multiple discrete microfeatures (protrusions, recesses, or channels) rather than a smooth continuous surface. This segmentation increases the effective contact area and mechanical interlocking between the hand and container, maintaining grip reliability even when condensation or liquid is present on the surface.
2Reliability
If coatings or adhesives are applied to increase friction, then gripping ability improves, but aesthetic appearance may be affected
Solution Approach 1:
The patent applies local quality by modifying only the surface topology at the micro-scale while maintaining the macroscopic visual appearance. The microstructured features are designed to be below the threshold of visual perception, providing enhanced friction and grip locally at the contact points without affecting the overall aesthetic appearance of the container surface.
3Reliability
If microstructured features are made visible to enhance grip, then friction increases, but aesthetic appeal is reduced
Solution Approach 1:
The patent applies parameter changes by controlling the dimensional parameters of the microstructured features, specifically keeping their size below the visual detection threshold of the human eye. The microfeatures are designed with dimensions and spacing that provide sufficient mechanical interlocking for enhanced friction while remaining optically invisible, thus maintaining aesthetic appeal.
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 microstructured surface increases grip strength and reduces slippage, maintaining aesthetic appeal while providing effective friction in both dry and wet conditions, as demonstrated by lift testing exceeding standard operating ranges for consumer products.
Implementation Method 1
The microstructured surface increases grip strength and reduces slippage, maintaining aesthetic appeal while providing effective friction in both dry and wet conditions
Data Source
AI summary
A label with improved physical properties comprising: a base layer having a microstructured area; a composite microstructure having a first, second and third set of microstructures disposed on the microstructured area; a dry lift force attributable to the composite microstructure greater than 7 pounds according to lift testing; a wet lift force attributable to the composite microstructure greater than 7 pounds according to lift testing; an adhesive layer affixed to the base layer for affixing the label to a container; and, thereby providing a microstructured label having improved gripping physical properties that can be affixed to a container.