The present invention relates to a method of treating a surface of a utensil as well as to a utensil having been treated by the method. A substrate is provided to form a component of the utensil. The substrate has a surface area to be treated. Through a shot peening process particles impact the substrate substantially evenly across the surface area, so as to dimple the substrate with depressions across the surface area, in order to reduce adhesion of matter on the treated surface area of the utensil.

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 includes a laminate material with structural rigidity, wherein the laminate material includes a flexible substrate impregnated with the heat resistant polymer material and/or 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.

A physical non-stick pan with a convex-concave structure, and a manufacturing method thereof are provided. The physical non-stick pan includes a pan body, where the convex-concave structure is formed on an inner surface of the pan body, the convex-concave structure comprises a convex edge protruding from the inner surface of the pan body and a recess enclosed by the convex edge, and a physical non-stick layer is at least arranged on an inner surface of the pan body in the recess. In the convex-concave structure, the convex edge protects a non-stick layer arranged in the recess, reduces a direct friction between a spatula and the non-stick layer, and prolongs a non-stick effect of the pan body.

The present application discloses a physically non-stick structure and a cooking utensil applied on a surface of a metal substrate, the physically non-stick structure includes a concave structure and a convex structure on at least a part of an area of the concave structure, at least a part of a surface of the concave structure and/or at least a part of a surface of the convex structure are provided with a physical vapor deposition layer, and a morphology of a surface of the physical vapor deposition layer is similar to a morphology of the surface of the concave structure and/or the surface of the convex structure covered by the physical vapor deposition layer.

A cooking vessel includes a base having a flat bottom and a sidewall connected to and surrounding the base, thereby defining an interior space configured for containing food. The base comprises a layered composite material that includes a first layer of the composite material has a positive Poisson's ratio (PPR) and a second layer of the composite material is disposed in contact with the first layer. The cooking vessel includes a material having a negative Poisson's ratio (NPR).

Provided is an article of cookware and a method of making the same. The cookware has a multi-layer bonded composite wall structure having an inner metal layer and an outer metal layer, and a core layer between the inner layer and the outer layer. The core layer has at least two perforated graphite plates, each plate having a plurality of spaced-apart holes formed therethrough, and at least one intermediate metal element disposed between the at least two perforated graphite plates and extending through the plurality of spaced-apart holes of each of the at least two perforated graphite plates. The at least one intermediate metal element is metallurgically bonded to the inner layer and the outer layer at least through the plurality of spaced-apart holes.

Described herein is multilayer article made by the process comprising: delivering particles comprising a silicon compound from at least one fluid jet to a metal surface to embed the metal surface with the silicon compound to form a silicon compound layer; coating the silicon compound layer with an aqueous fluoropolymer dispersion to form a fluoropolymer layer and thereby forming a multilayered article, wherein the aqueous fluoropolymer dispersion comprises (i) a modifying agent; and (ii) a fluorinated polymer, wherein the fluorinated polymer comprises at least one of (a) a partially fluorinated polymer capable of forming a carbon-carbon double bond, (b) a functionalized fluorinated polymer, and (c) combinations thereof; and sintering the multilayered article to form the release surface coated substrate.

Described herein is multilayer article made by the process comprising: delivering particles from at least one fluid jet to a metal surface to impregnate the metal surface with a fluoropolymer to form a first fluoropolymer layer, wherein the particles comprise an abrasive particle, a binder, and a first fluoropolymer; coating the first fluoropolymer layer with a second fluoropolymer to form a second fluoropolymer layer and thereby forming a multilayered article; and sintering the multilayered article to form the release surface coated substrate.

Described herein is multilayer article and methods of making thereof, wherein the multilayer article comprises: (a) metal substrate; (b) a first fluoropolymer layer having a thickness no more than 10 micrometers, wherein the first fluoropolymer layer consists essentially of a fluoropolymer comprising reactive groups, wherein when the fluoropolymer is a melt-processible fluoropolymer it comprises at least 30 reactive groups per 1,000,000 carbon atoms and when the fluoropolymer is a non-melt processible fluoropolymer it comprises more than 5 reactive groups per 1,000,000 carbon atoms; and (c) a second fluoropolymer layer having a thickness of about 10 to 1000 micrometers, wherein the first fluoropolymer layer is in contact with both the metal substrate and the second fluoropolymer layer.

Provided is a method for obtaining a cooking vessel that includes the following steps: producing a bowl having an aluminum outer surface and an inner surface; performing hard anodization of at least the outer surface of the bowl; and providing a sol-gel coating on the anodized outer surface. At least one coloring step is carried out following the hard anodization, the coloring step(s) being carried out before and/or during the sol-gel coating step. Also provided is a kitchen item or an electrical cooking appliance that includes a cooking vessel obtained by the above method.