Nonstick cookware materials, and methods for manufacture and use
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Solution Overview
Problem
Existing nonstick cookware faces issues with durability, heat dissipation, food support, and recyclability, particularly in high-speed and high-temperature ovens, where polymer coatings tend to flake off or lose effectiveness due to residue buildup, and lack structural rigidity and ease of use.
Innovation Solution
Development of a heat-resistant, nonstick polymer composite material incorporating melt-processible fluoropolymers and silicone, applied as a coating or insert, which is moldable, durable, and recyclable, providing structural rigidity and ease of use in high-temperature environments, and can be retrofitted or replaced in existing cookware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polymer coating is applied to metal cookware to provide nonstick surface, then nonstick performance is improved, but coating durability deteriorates due to flaking and residue buildup
Solution Approach 1:
The patent applies composite materials by combining polymer nonstick coating with metal substrate to create a cookware system that integrates the nonstick properties of polymers with the structural strength and heat conductivity of metal, resolving the contradiction between nonstick performance and coating durability
Solution Approach 2:
The patent modifies the polymer coating parameters by adjusting composition, thickness, and curing conditions to enhance coating adhesion and resistance to flaking and residue buildup, thereby improving both nonstick performance and durability simultaneously
2Strength
If metal is used for cookware to provide structural strength and heat retention, then structural integrity is improved, but heat dissipation deteriorates causing uneven cooking and safety issues
Solution Approach 1:
The patent uses composite construction with metal core for structural strength and heat retention, combined with polymer coating layers that provide heat dissipation and temperature control, achieving both structural integrity and improved heat management
Solution Approach 2:
The patent applies different material properties to different parts of the cookware - metal provides structural strength and heat retention in the core, while polymer coating provides heat dissipation and nonstick surface at the cooking area, creating localized functional optimization
3Reliability
If polymer coating thickness is increased to improve nonstick performance, then nonstick durability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary surface treatment and priming to the metal substrate before applying the polymer coating, which enhances coating adhesion and durability while maintaining a controlled, multi-step manufacturing process that balances performance with manufacturability
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 solution offers improved durability, heat resistance up to 600°F (315°C), ease of cleaning, and recyclability, ensuring consistent nonstick performance and safety in high-temperature cooking while allowing for easy replacement and recycling of surface inserts.
Implementation Method 1
Exemplary nonstick surface polymer materials according to embodiments of this invention include melt-processible fluoropolymers, such as perfluoroalkoxy alkanes (PFA), TFE/perfluoromethylvinylether copolymer (MFA), or fluorinated ethylene propylene (FEP). Additionally blends of fluoropolymers, such as MFA, PFA, FEP, ECTFE, and PTFE, as well as, non-stick, silicone-containing materials can also be utilized.
Implementation Method 2
The cookware includes a non-stick cooking surface formed of, or otherwise covered/coated by, a polymer material. Suitable polymer materials include, without limitation, silicone and fluoropolymer materials... can withstand temperatures over 375° F. (191° C.) for an indefinite period of time, and more preferably 500° F. (260° C.).
Data Source
AI summary
Heat resistant and/or nonstick polymer materials and composites, and cookware including a food support surface comprising an integrated or attached cooking surface formed of the materials and composites. The cookware can includes a melt-processible fluoropolymer surface or insert. The cookware can further include a laminate material with structural rigidity, wherein the laminate material includes a flexible substrate impregnated with the heat resistant polymer material, coated with a nonstick coating, and pressed or molded in a shaped cookware or other nonstick items or component. Various cooking devices can be pressed from the material, as well as oven or vehicle components.