Cookware that achieves non-stick effect by means of pure inorganic structural layer, and manufacturing method therefor
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Solution Overview
Problem
Existing non-stick cookware materials, such as fluoropolymers and silicone sol resin, face issues with temperature resistance, durability, environmental safety, and non-stick performance, while ceramic and enamel cookware lack inherent non-stick properties and have manufacturing complexity.
Innovation Solution
A cookware design featuring a pure inorganic structure layer with stacked sub-layers of varying particle sizes and compositions, including an oil storage layer, slow-release curing layer, and dispersing surface layer, formed by spraying inorganic particles on a base material layer, creating a connected porous structure without organic solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fluoropolymer materials (PTFE) are used for non-stick coating, then non-stick performance is improved, but temperature resistance deteriorates (decomposes above 250°C) and harmful factors increase (toxic substances produced)
Solution Approach 1:
The patent applies porous inorganic particles (ceramic, metal oxide, or carbon-based) to create a non-stick surface structure. The porous structure allows cooking oil to be absorbed and retained, forming a lubricating film that provides non-stick performance without relying on fluoropolymer materials, thereby achieving high temperature resistance while maintaining non-stick functionality.
Solution Approach 2:
The patent uses composite inorganic particle structures combining different materials (ceramic particles, metal oxide particles, and/or carbon-based particles) to create a multi-functional coating that simultaneously provides non-stick performance, high temperature resistance, and durability, eliminating the need for organic fluoropolymer materials.
2Temperature
If ceramic and enamel materials are used for cookware, then temperature resistance and durability are improved, but non-stick performance deteriorates (lack inherent non-stick properties)
Solution Approach 1:
The patent creates a porous surface structure on the ceramic or enamel base material by applying inorganic particles with connected pore structures. This porous structure enables the material to absorb and retain cooking oil, which then provides the non-stick effect during cooking, thereby endowing traditionally non-non-stick ceramic and enamel materials with excellent non-stick performance.
Solution Approach 2:
The patent modifies only the surface layer of the cookware by applying the inorganic particle coating, while the bulk material remains ceramic or enamel. This local modification provides non-stick properties at the surface while maintaining the high temperature resistance and durability of the underlying ceramic or enamel material.
3Reliability
If small grooves or capillary pores are created on cookware surface, then non-stick performance is improved through reduced contact area, but manufacturing complexity increases (high demands on manufacturing process)
Solution Approach 1:
The patent extracts the non-stick function from complex mechanical groove structures and achieves it through a simpler porous particle coating layer. The inorganic particles naturally form connected pores that perform the same function as engineered grooves, but through a more straightforward spraying or coating process rather than complex machining or molding operations.
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 cookware achieves high bonding strength, toughness, and non-stick performance through micro-pore heating and oil retention, ensuring easy cleaning and maintaining non-stick functionality over time.
Implementation Method 1
The pure inorganic structure layer is formed by spraying inorganic particles on the inner surface of the base material layer
Implementation Method 2
the grooves and capillary pores on the cookware's inner surface can absorb grease. During heating and cooking, the grease in the grooves and capillary pores can expand and be released, forming a layer of oil film
Implementation Method 3
During heating and cooking, the grease in the grooves and capillary pores can expand and be released, forming a layer of oil film at the bottom of the cookware
Data Source
Figure 1
AI summary
This invention relates to a cookware and its manufacturing method that achieves a non-stick effect through a pure inorganic structure layer. The cookware includes a base material layer and a pure inorganic structure layer. The pure inorganic structure layer is formed by spraying inorganic particles on the inner surface of the base material layer, creating a connected porous structure between the inorganic particles of the pure inorganic structure layer. The pure inorganic structure layer comprises at least three sub-inorganic structure layers, which are stacked on the inner surface of the base material layer according to the particle size of the inorganic particles. The sub-inorganic structure layer adjacent to the base material layer has the largest inorganic particle size. As it moves away from the base material layer, the particle size of the multiple sub-inorganic structure layers decreases successively, thereby gradually reducing the porosity of the multiple sub-inorganic structure layers in the direction away from the base material layer. The pure inorganic structure layer of this invention's cookware has high bonding strength and toughness, high surface hardness, scratch and wear resistance, and features oil absorption, oil storage, and self-lubrication on its surface. Upon heating, the pores can perform micro-pore heating breathing, thus achieving a non-stick and easy-to-clean effect.