Method for the three-dimensional decoration of a substrate to produce an external part

Patent metadata

Field	Value
Publication number	US-2025066266-A1
Application number	US-202418780812-A
Country	US
Kind code	A1
Filing date	Jul 23, 2024
Priority date	Aug 23, 2023
Publication date	Feb 27, 2025
Grant date	—

Abstract

A method for the three-dimensional decoration of a substrate ( 11 ) to produce an external part ( 10 ) including the steps of: depositing at least one enamel carrier layer ( 12 ) on a decorative area of an external surface ( 110 ) of a ceramic substrate ( 11 ), the decorative area being intended to receive a decorative element ( 13 ); firing the substrate ( 11 ) comprising the carrier layer ( 12 ) so as to melt the latter; depositing a ceramic and/or metal decorative element ( 13 ) in solid form on the carrier layer ( 12 ); and sealing the decorative element ( 13 ) to the substrate ( 11 ) by firing to form an external part ( 10 ).

First claim

1 . A method for the three-dimensional decoration of a substrate ( 11 ) to produce an external part ( 10 ) comprising the steps of:
depositing at least one enamel carrier layer ( 12 ) on a decorative area of an external surface ( 110 ) of a ceramic substrate ( 11 ), said decorative area being intended to receive a decorative element ( 13 ); firing the substrate ( 11 ) comprising the carrier layer ( 12 ) so as to melt the carrier layer; depositing a decorative element ( 13 ) made of a ceramic material and/or metallic material in solid form on the carrier layer ( 12 ), the material of the decorative element being such that its melting temperature is higher than the glass transition temperature of the material constituting the carrier layer ( 12 ); sealing the decorative element ( 13 ) to the substrate ( 11 ) by firing to form an external part ( 10 ).

2 . The method according to claim 1 , wherein the firing of the substrate ( 11 ) and of the carrier layer ( 12 ), and the sealing of the decorative element ( 13 ) to the substrate ( 11 ) are carried out during the same step, when the melting temperature of the material constituting the decorative element ( 13 ) is greater than 1000 degrees Celsius.

3 . The method according to either claim 1 , wherein a blind cavity ( 14 ) is made in the substrate ( 11 ) so as to form the decorative area and such that a shape thereof corresponds to a shape of the decorative element ( 13 ), the decorative element being deposited so as to extend beyond said cavity ( 14 ).

4 . The method according to claim 1 , wherein a blind cavity ( 14 ) is made in the substrate ( 11 ) so as to form the decorative area and such that a shape thereof corresponds to a shape of the decorative element ( 13 ), the decorative element being deposited so as to extend beyond said cavity ( 14 ), the cavity ( 14 ) having a depth of at least 0.01 mm.

5 . The method according to claim 1 , wherein the carrier layer ( 12 ) is made of borosilicate enamel or feldspar.

6 . The method according to claim 5 , wherein the carrier layer ( 12 ) is made of sodium borosilicate enamel.

7 . The method according to claim 1 , wherein, when the melting temperature of the material constituting the decorative element ( 13 ) is below 1000 degrees Celsius, after the step of firing the substrate ( 11 ) comprising the carrier layer ( 12 ), the carrier layers is surfaced so as to flatten its surface and even out its thickness.

8 . The method according to claim 1 , wherein, during the sealing step, the temperature to which the substrate ( 11 ), the carrier layer ( 12 ) and the decorative element ( 13 ) are subjected is between 500 degrees Celsius and 1500 degrees Celsius.

Assignees

• Comadur Sa

Inventors

• Le Boudouil Damien
• Bourcet Laurent

Classifications

• B44C1/227 Primary

  by etching · CPC title

• B44C1/00

  Processes, not specifically provided for elsewhere, for producing decorative surface effects (decorating textiles D06Q) · CPC title

• A44C17/04

  Setting gems in jewellery; Setting-tools · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C04B41/52

  Multiple coating or impregnating {multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation} · CPC title