METHOD AND DEVICE FOR STARTING WITH REDUCED MATERIAL LOSS OF A MULTIPLE EXTRUSION PRESS FOR THE PRODUCTION OF PROFILES IN DIFFERENT MIXTURES OF RUBBER OR PLASTIC MATERIAL, FOR EXAMPLE, PROFILES FOR ROLLING BANDS OR FLANKS OF VEHICLE PNEUMATIC TIRES

摘要

THE INVENTION RELATES TO EXTRUSION MOLDING. / P P AGENCY SENSORS IN OUTPUTS OF EXTRUDERS 10, 11, 12 OR IN INPUTS OF CHANNELS 5, 6, 7 OF THE MULTIPLE EXTRUSION HEAD, MONITOR PRESSURES OF THE DIFFERENT CONSTITUENTS OF THE PROFILE, WHICH INDIVIDUALLY ENABLE INDIVIDUALLY ANY OF THE 13, 14, 15 ENGINES OF THE EXTRUDERS INTERESTED WHEN THE PRESSURE CAPTURE REACHES A SELECTED LEVEL. WHEN THE LAST PRESSURE HAS BEEN REACHED, ALL THE ENGINES ARE RELEASED AT THE SAME TIME, AND THERE IS OBTAINED FROM THE BEGINNING OF THE EXTRUSION A REGULAR 20 PROFILE, WITH VERY LOW LOSSES AT START-UP. / P P APPLICATION IN PARTICULAR TO THE MANUFACTURE OF COMPOSITE RUBBER BANDS OR PLASTIC MATERIAL FOR TIRES.