SUNSHIELD LAMINATION STRUCTURE

THE INVENTION RELATES TO A MULTILAYER SUNSHIELD LAMINATION STRUCTURE FORMED ON A SHEET OF VITREOUS MATERIAL COMPRISING AT LEAST ONE FUNCTIONAL LAYER COMPOSED OF A SILVER-BASED MATERIAL THAT REFLECTS INFRARED RADIATION AND AT LEAST TWO DIELECTRIC COATINGS, EACH FUNCTIONAL LAYER BEING SURROUNDED BY DIELECTRIC COATINGS. SAID LAMINATION STRUCTURE, WHEN DEPOSITED ON AN ORDINARY CLEAR SODA LIME FLOAT GLASS SHEET 6 MM THICK, HAS A SOLAR FACTOR SF OF LESS THAN 45% AND A LIGHT TRANSMISSION LT OF LESS THAN 70%. ACCORDING TO THE INVENTION, THE LAMINATION STRUCTURE IS COMPOSED OF AN ESSENTIALLY METAL ABSORBENT MATERIAL BASED ON THE FOLLOWING ELEMENTS: PD, PT, AU, IR, RH, RU, OS, CO, NI, CU, CR, LA, CE, PR, ND, W, SI, ZN, MO, MN, TI, V, NB, HF, TA AND ALLOYS THEREOF ARRANGED IN THE IMMEDIATE VICINITY OF THE FUNCTIONAL LAYER OR INCLUDED IN THIS FUNCTIONAL LAYER. THE INVENTION IS PARTICULARLY ADVANTAGEOUS FOR THE FORMATION OF SELECTIVE GLAZINGS WITH A HIGH SOLAR FACTOR AND AESTHETICALLY PLEASING APPEARANCE, AND IN PARTICULAR SUCH GLAZINGS THAT HAVE UNDERGONE A TOUGHENING AND/OR BENDING TYPE OF HIGH-TEMPERATURE THERMAL TREATMENT.