Micro-Structured Container Surface for Insulation and Condensation Resistance
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Solution Overview
Problem
Existing beverage containers, particularly those made of paper or plastic, face challenges with scalding from hot liquids and condensation from cold liquids, leading to increased risk of injury and structural damage, with existing solutions being either ineffective or adding unnecessary weight and cost.
Innovation Solution
A micro-structured surface with high aspect ratio features is applied to the container, reducing heat transfer and condensation through a patterned design that can be manufactured using various methods, including injection molding and printing processes, to enhance insulation and prevent condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thin paper or plastic is used for beverage containers, then cost and weight are reduced, but scalding risk from hot liquids increases
Solution Approach 1:
The patent applies a porous hydrophobic coating on the container surface that allows water vapor to pass through while blocking liquid water. This porous structure provides thermal insulation to prevent scalding while maintaining the thin-wall design of the container, thus reducing weight and cost without increasing scalding risk
Solution Approach 2:
The patent changes the surface energy parameters of the container by applying a hydrophobic coating with specific contact angle properties. This parameter change allows the surface to repel liquid water while permitting vapor transmission, providing thermal protection without adding significant weight or cost to the thin container wall
2Weight of moving object
If thin paper or plastic is used for beverage containers, then cost and weight are reduced, but structural integrity deteriorates when exposed to condensation
Solution Approach 1:
The porous hydrophobic coating allows water vapor to escape from the container wall while blocking liquid condensation. This prevents water accumulation that would compromise the structural integrity of thin paper or plastic containers, maintaining strength without adding weight
Solution Approach 2:
The hydrophobic coating acts as an intermediary layer between the container wall and the external environment. It mediates the interaction by allowing vapor transmission while blocking liquid water, thus protecting the thin container wall from condensation-induced structural degradation without requiring additional protective accessories
3Object-affected harmful factors
If insulating rubber or foam sleeves are used for cold beverages, then condensation is reduced, but weight and cost increase
Solution Approach 1:
The porous hydrophobic coating provides condensation resistance by allowing water vapor to pass through while blocking liquid water formation. This eliminates the need for heavy rubber or foam sleeves, maintaining container weight reduction while effectively reducing condensation
Solution Approach 2:
The hydrophobic coating provides self-service condensation protection by inherently repelling water through its surface properties. The container surface automatically prevents condensation without requiring additional protective accessories, thus reducing weight and cost while maintaining effectiveness
4Object-affected harmful factors
If condensation management accessories like coasters are used, then supporting surfaces are protected, but device complexity increases
Solution Approach 1:
The hydrophobic coating enables the container to protect supporting surfaces from condensation damage through its own surface properties. This self-service approach eliminates the need for separate coasters or protective accessories, reducing device complexity while maintaining protection of supporting surfaces
Solution Approach 2:
The hydrophobic coating provides multiple functions simultaneously: it prevents scalding from hot liquids, blocks condensation from cold liquids, and protects supporting surfaces. This multi-functionality eliminates the need for separate accessories like sleeves and coasters, reducing overall device complexity
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 micro-structured surface effectively increases the hold time for hot liquids and reduces condensation on the container and underlying surfaces, improving safety and reducing the need for additional accessories like sleeves or coasters.
Implementation Method 1
the micro-features provide for a decrease in heat transfer from an outer wall of the beverage container
Implementation Method 2
The micro-features provide for a decrease in condensation on the outer wall of the beverage container
Data Source
AI summary
This invention is a micro-featured surface with improved insulation and condensation resistance comprising: a micro-structure included with the substrate having an arrangement of a first set of micro-features and a second set of micro-features; a first micro-feature horizontal cross section taken from the group consisting of a circle, oval, polygon, and concave portion; a condensation rate less than 0.15 grams when measure by an ambient test method; and an improved hold time of 23.00% or greater as shown by hold testing wherein a micro-feature density is in a range of 5.00% to 25.00%.