The present invention relates to a device (1) for packaging a product, comprising:—a container (2) having joined front and rear walls,—an article (3) packaged in a folded state inside the container (2), this article (3) bearing said product, having at least two sections separated by at least one fold line (4), at least one of these two sections being attached to one of the front and rear walls by at least one weld zone (5).