The present invention concerns an article (I) consisting of at least two sheets stacked and welded to define a paving comprising at least three tiles (2), each tile (2) comprising at least three three sides and three vertices, said tiles (2) being deployed in at least two spatial directions defining a plane, said tiles (2) being adjacent and connected to each other by at least one of the sides of same, said tiles (2) comprising at least one compartment (3) including at least a material absorbent to an aqueous medium or a filler material, said tiles (2) being closed and connected to each other by at least one weld, said weld being produced by ultrasound, heat or any other type of weld known to a person skilled in the art, characterised in that the weld consists of a frangible line (8) constituted by a series of weakening welds (6) and junction points (7) or a pre-cut bordered to either side with a mix weld (5), said mix weld being broadened close to the vertex of each tile (2) such that the corner of the tiles (2) is reinforced by an enlarged weld surface area； the present invention also concerns a method for producing said article, and a device for implementing the production method. The article according to the invention can be used as a cooling thermal compress.La présente invention concerne un article (I) composé d'au moins deux feuillets superposés et soudés pour définir un pavage comprenant au moins trois tuiles (2), chaque tuile (2) comprenant au moins trois côtés et trois sommets, lesdites tuiles (2) se déployant dans au moins deux directions de l'espace définissant un plan, lesdites tuiles (2) étant adjacentes et connectées les unes aux autres par au moins un de leurs côtés, lesdites tuiles (2) comprenant au moins un compartiment (3) incluant au moins un matériau absorbant de milieux aqueux ou un matériau de remplissage, lesdites tuiles (2) étant fermées et connectées les unes aux autres par au moins une soudure, ladite soudure étant réalisée par ultrasons,
