| abstract |
THE INVENTION RELATES TO A PROCESS FOR MANUFACTURING A MULTI-LAYER SHEET PANEL INCLUDING A STRUCTURAL LAYER IN THERMOPLASTIC MATERIAL CONSTITUTING AN OUTER LAYER OF THE PANEL. THE PROCESS INCLUDES DEGAZING AND SOLIDARIZATION STEPS IN WHICH THE EXPOSED FACE OF THE LAYER OF THERMOPLASTIC MATERIAL 3 IS PLACED IN CONTACT WITH A MOLDING PLATE 4. ALL OF THE ASSEMBLED LAYERS 2, 3, 4 ARE SUBJECT TO A CYCLE OF TEMPERATURE AND PRESSURE DURING WHICH THE SURROUNDING PRESSURE AS WELL AS THE PRESSURE APPLIED TO THE EDGES OF THE ASSEMBLY ARE LOWER THAN ATMOSPHERIC PRESSURE. THE INVENTION APPLIES TO LEAF WINDOWS SUCH AS WINDSHIELDS. |