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Sol-gel coating comprising anisotropic particles and a culinary article provided with such a coating

An anisotropic, particle-based technology, used in the field of cooking equipment, can solve problems such as easy peeling

Active Publication Date: 2014-11-05
SEB SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of easy peeling in certain areas, especially sensitive areas, which are high stress areas of cooking equipment

Method used

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  • Sol-gel coating comprising anisotropic particles and a culinary article provided with such a coating
  • Sol-gel coating comprising anisotropic particles and a culinary article provided with such a coating
  • Sol-gel coating comprising anisotropic particles and a culinary article provided with such a coating

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0191] Achieving a single-layer coated film according to the invention comprising platelets substantially perpendicular to the film

[0192] A sol-gel mixture in the form of two components A+B was prepared in the same manner as in Comparative Example 2. The mixture was applied in the same manner as in Comparative Example 2 on a support made of sandblasted, degreased aluminum having a temperature of 60°C.

[0193] Conversely, immediately after application of the sol-gel mixture by spraying (but before baking), a magnetic field of 70 mT was applied by means of a permanent magnet arranged below the substrate. Under the action of a magnetic field, the mica flakes are oriented along the field lines, ie at the permanent magnet, due to their enveloping of magnetic iron oxide. It was observed that the wrapped mica flakes were mostly inclined at an angle α between 20° and 90° with respect to the film midplane.

[0194] Subsequently, the coating is baked at a temperature of 250° C. fo...

example 2

[0196] Achieving a double layer coated film according to the invention comprising platelets approximately perpendicular to the film

[0197] A colored sol-gel mixture and a colorless sol-gel mixture containing encapsulated mica flakes were prepared in a similar manner to Comparative Example 3. Also in the same manner as in Comparative Example 3, these mixtures were applied continuously on a support made of sandblasted, degreased aluminum having a temperature of 55°C.

[0198] Instead, immediately after application of the colorless sol-gel mixture by spraying (but before baking), a magnetic field of 70 Mt was applied by means of a permanent magnet arranged below the substrate. Under the action of a magnetic field, the mica flakes are oriented roughly vertically along the field lines, ie at the magnet, due to their enveloping of the magnetic iron oxide.

[0199] Subsequently, the coating is baked at a temperature of 280° C. for a period of at least 15 minutes.

[0200] Observa...

example 3

[0202] Achieving a double layer coated film according to the invention comprising microfibers approximately perpendicular to the film

[0203] This example differs from example 2 only in the shape of the particles in the final layer: a sheet wrapped in stainless steel microfibres is used instead.

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Abstract

The subject matter of the present invention is a vitreous coating (3) comprising at least one layer (31) embodied in the form of a continuous film of a sol-gel material comprising a matrix formed from at least one metal polyalkoxylate and wherein anisotropically-shaped particles (32) are dispersed, said layer comprising at least one area (311) wherein the particles are particles predominantly inclined by an angle (alpha) of between 20° and 90° relative to the median plane of the film. The subject matter of the present invention also comprises a method of manufacturing such a coating (3), and a culinary article (1) one of the surfaces (21, 22) of which is coated with such a coating (3).

Description

technical field [0001] The present invention generally relates to coatings obtained by the sol-gel method of intercalation of anisotropic particles (of the sheet or fiber type) and to cooking appliances equipped with such coatings and which Can be used on any type of substrate, especially metal. [0002] The invention also relates to an application method for applying such a coating to a substrate, and the use of such a coating for the manufacture of cooking appliances. [0003] The target field is above all that of cooking appliances, but the invention can also relate to any other type of surface, such as the soleplate of an iron, the plate of a hair straightener, or the cover of a household appliance. Background technique [0004] Sol-gel coatings are especially popular in the field of cooking appliances, since cooking appliances allow to obtain pigmented coatings with good hardness and heat resistance. However, it has the disadvantage that it tends to peel off in certai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J36/02B05D5/08B32B3/10B32B5/00B32B5/08B32B7/02B32B15/00B32B27/00B32B27/28C09D183/04B32B7/00B32B9/00
CPCA47J36/02B05D2601/28C09D183/04B05D3/207B05D5/08B05D7/14Y10T428/24612Y10T428/31612Y10T428/31663H01F1/01
Inventor 奥里莱恩·迪邦谢史黛芬妮·勒布里让-路克·佩里莱恩
Owner SEB SA
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