Cooking utensil comprising a hard base made from ceramic and/or metal and/or polymer material and a nonstick coating containing a fluorocarbon resin
AssigneeSeb S.A.
InventorsJean-Luc Perillon, Michel Fontaine
Life of this patent
Estimating the term…
Abstract
The invention relates to a cooking utensil comprising a hollow bowl with a base and a side wall rising from the base, and including at least one fragile area. The bowl has a concave inner surface for receiving food, as well as a convex outer surface. The utensil is coated successively, from the bowl, with a hard base and a nonstick coating, which covers the hard base and includes at least one layer containing at least one fluorocarbon resin. The hard base has a layer that is at least broken at the fragile area. The invention also relates to a method for producing such a utensil.
Claims8
1-18. (canceled)
A method for producing a cooking utensil, comprising the following steps:
- a) supplying a metal support in the form of a disk;
- b) forming said metal support to give it the shape of a bowl, including a bottom, side walls rising from the bottom and having at least one fragile area, the at least one fragile area being the connection area between the bottom and side walls, a concave inner surface adapted to receive food, and a convex outer surface;
- c) adhering a hard base on said inner surface of the support, wherein adhering the hard base comprises:
- thermal spraying a ceramic and/or metal and/or polymer material having a powdery form on said inner surface of the bowl to form a layer which is at least discontinuous on the at least one fragile area, the discontinuous layer having the form of a superficial dispersion of drops of said material distributed in a substantially homogeneous manner on said inner surface at least at the location of the at least one fragile area, with:
- an overlap ratio which is between 30% and 80% of the surface to be covered, and
- a drop size between 2 μm and 50 μm,
- and wherein the hard base has a surface roughness (Ra) between 2 μm and 12 μm;
- d) adding a nonstick coating on said hard base, wherein the nonstick coating comprises at least one layer including at least one fluorocarbon resin, alone or in a mixture with at least one resistant thermostable bonding resin at least at 200° C., with the resin or resins forming a sintered continuous network.
Dependencies are inferred from the claim text.