Loading patent…
AssigneeGlass Surface Technology
InventorsChristophe Wagner, Antoine Bauvin
Estimating the term…
The present inventing relates to a method for marking at least one inner face of a container with at least one given pattern, in which method the inside of said inner face is at least partially coated with a pigmented sol-gel layer that reacts to laser radiation, by spraying or by means of a stamp applied to a precise zone of the layer provided for containing the pattern, and the pattern is developped by interaction between the sol-gel and UV laser radiation specifically programmed according to the pattern to be revealed, the UV laser radiation being emitted by a device comprising an optical system having a long optical length that allows a field depth of more than 1 mm to be obtained. The present invention also relates to a device suitable for implementing this method and to a container obtained by this method.
A process for treating at least one inner face of a container, wherein said inner face is internally covered, at least in part, with a sol-gel layer, and said layer is treated by laser radiation, characterized in that, said layer being a pigmented layer that reacts to laser radiation, the sol-gel layer is applied by spraying or stamping said layer on a precise predetermined zone arranged to contain a pattern and the pattern is developed by interaction between the sol gel and UV laser radiation specifically programmed as a function of said pattern to be revealed, the UV laser radiation being emitted by a device comprising an optic with a long focal distance allowing a depth of field of greater than 1 mm.
A device comprising a support tool for a bottle, means for rotating the bottle, and UV laser means external to the bottle, arranged in order to direct a UV laser beam comprising an optic with a long focal distance allowing a depth of field of greater than 1 mm and to focus it at a distance from an inner face of said container in a programmed manner, to reveal a pattern on said inner face of the bottle precoated with a pigmented sol-gel product.
Dependencies are inferred from the claim text.