Water-Soluble Sheet Nanostructures for Iridescence and Sealing
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Solution Overview
Problem
Existing water-soluble packaging requires additional chemical agents to achieve improved appearance and sealing strength, which can pose health hazards and affect performance.
Innovation Solution
A water-soluble sheet with a nanostructured surface pattern having structural features less than 2 μm, which diffracts light into dispersed colors, enhancing appearance and distinctiveness without additional chemicals, and improves sealing strength through a manufacturing process involving a substrate with a complementary nanostructured pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If additional chemical ingredients are added to water-soluble packaging to improve appearance, then the aesthetic quality is enhanced, but health hazards increase and packaging performance is affected
Solution Approach 1:
The patent replaces chemical agents with a physical nanostructured surface pattern that diffracts light to create iridescent colors. The structural features of less than 2 μm on the sheet surface physically interact with light waves to produce dispersed colors, eliminating the need for harmful chemical additives while achieving enhanced appearance.
Solution Approach 2:
The patent changes the physical structure of the sheet by introducing nanostructured surface patterns with specific dimensional parameters (less than 2 μm). This structural parameter change enables light diffraction effects that produce iridescent appearance without requiring chemical composition changes.
2Illumination intensity
If additional chemical ingredients are added to water-soluble packaging to improve appearance, then the aesthetic quality is enhanced, but packaging performance is affected
Solution Approach 1:
The patent substitutes chemical modification with physical structural modification. The nanostructured surface pattern physically diffracts light to create iridescent effects, preserving the chemical composition and performance characteristics of the water-soluble material while achieving enhanced appearance.
Solution Approach 2:
The patent modifies only the physical structural parameters of the sheet (introducing surface patterns with features less than 2 μm) without altering the chemical composition. This selective parameter change enhances appearance while maintaining packaging performance and water-solubility characteristics.
3Ease of manufacture
If conventional manufacturing processes are used for water-soluble sheets, then the production is simple, but sealing strength is insufficient
Solution Approach 1:
The patent introduces nanostructured surface patterns with specific dimensional parameters (less than 2 μm) during the manufacturing process. This structural parameter enhancement improves sealing strength by increasing surface area and interfacial adhesion, while the process remains integrated into conventional manufacturing workflows.
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 nanostructured surface pattern provides an attractive, iridescent appearance and improved sealing capability without the need for additional chemicals, while maintaining tensile and sealing properties.
Implementation Method 1
upon the incident of polychromatic light onto the surface pattern, the light is diffracted into dispersed colours
Data Source
AI summary
The invention relates to a water-soluble sheet comprising a nanostructured surface pattern having structural features of less than 2 μm.The invention is further related to a method of manufacturing such a water-soluble sheet having a nanostructured surface pattern having structural features of less than 2 μm, wherein the method comprises contacting a water-soluble sheet with a substrate having a complementary nanostructured surface pattern.