Article comprising a material with a cooling function

Article (1) consisting of at least two sheets (4) stacked and welded to define a paving comprising at least three tiles (2), each tile (2) comprising at least 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 one 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 those skilled in the art,
• wherein
• 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 on either side with a mix weld (5),
• said mix weld (5) being broadened in the vicinity of each tile (2) such that the corner of the tiles (2) is reinforced by an enlarged weld surface area.