Ceramic-Coated Enameled Cookware for Non-Stick High-Heat Cooking

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Solution Overview

Problem

Conventional heat-cookers made of iron and steel materials lack non-stick functionality, leading to food sticking issues, and existing non-stick coatings like PTFE are toxic and degrade at high temperatures, posing health risks and durability problems.

Innovation Solution

An enameled heat-cooker with non-stick ceramic coating layers formed on both surfaces, using a ceramic coating composition that emits anions, radiates far infrared rays, and is non-toxic, featuring a glaze composition and sandblasting to enhance adhesive force between enamel and ceramic layers, providing corrosion, abrasion, and heat resistance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a polytetrafluoroethylene (PTFE) coating layer is formed on the body of the heat-cooker to provide non-stick function, then food sticking is prevented, but the coating decomposes at high temperatures (260°C) and may release toxic substances, posing health risks

Engineering Contradiction:

Improvenon-stick functionVSAvoidtoxicity and decomposition at high temperature

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent changes the material parameter from organic PTFE to inorganic ceramic coating, fundamentally altering the chemical composition to achieve high-temperature stability and non-toxicity while maintaining non-stick properties. The ceramic coating remains stable at temperatures exceeding 260°C where PTFE decomposes.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite structure consisting of an enamel layer as the base coating and a ceramic coating layer as the top non-stick layer. This multi-layer composite approach combines the corrosion resistance of enamel with the high-temperature stability and non-stick properties of ceramic material.

Inventive Principle:

Principle #40Composite materials

2Reliability

If an enamel coating is applied on iron and steel material to improve corrosion resistance, then durability is enhanced, but the coating lacks non-stick function causing food to stick during cooking

Engineering Contradiction:

Improvecorrosion resistanceVSAvoidnon-stick function

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent creates a composite coating system where the enamel layer provides corrosion resistance and the additional ceramic coating layer provides non-stick functionality. This layered composite structure allows each layer to fulfill its specific function without compromising the other.

Inventive Principle:

Principle #40Composite materials

3Reliability

If a ceramic coating layer is formed on the enamel layer to provide non-stick function and high-temperature resistance, then the coating becomes more durable and non-toxic, but the adhesion between the enamel and ceramic layers may be insufficient

Engineering Contradiction:

Improvedurability and non-toxicityVSAvoidadhesive force between layers

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent applies sandblasting treatment to the enamel layer surface before applying the ceramic coating. This preliminary surface treatment creates a roughened surface that enhances mechanical interlocking and improves adhesion between the enamel and ceramic layers, preventing coating delamination during use.

Inventive Principle:

Principle #10Preliminary action

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 enameled heat-cooker prevents food from sticking, offers excellent corrosion and abrasion resistance, and is environmentally friendly, ensuring durability and safety without the toxicity concerns of PTFE coatings.

Implementation Method 1

a non-stick ceramic coating layer which emits anions, radiates far infrared rays, is non-adhesive, and is non-toxic to the human body, is formed on the outer surface of one of the enamel layers

Methodology Applied

Scientific EffectFar infrared radiation: Infrared Radiation

Implementation Method 2

performing sandblasting on the outer surface of one of the enamel layers to increase surface roughness of the enamel layer

Methodology Applied

Scientific EffectAbrasion: Abrasion

Data Source

PatentUS9084505B2Enameled-heated cooking utensils with non-stick ceramic coating layer, and preparation method thereof

Publication Date: 2015.07.21 THERMOLON KOREA

AI summary

The present invention relates to enameled-heated cooking utensils with a non-stick ceramic coating layer, and a preparation method thereof, wherein enamel layers are formed on both sides of a main body of heating cooking utensils which is made by using an iron and steel material such as cast ion, steel, cold rolled steel plate and the like, and a non-stick ceramic coating layer which emits anions, radiates far infrared rays, is nonadhesive and does not harm the human body, is formed on the outer surface of the enamel layers. The inventive enameled heating cooking utensils has excellent corrosion resistance, abrasion resistance, heat resistance and the like, prevents food from sticking when heating food, and is environmentally-friendly by forming a non-stick ceramic coating layer which does not harm human body, and thus the demand of the enameled-heated cooking utensils according to the present invention is expected to remarkably increase hereafter.