PROCESS FOR THE CO-EXTRUSION PRODUCTION OF PROFILES COMPRISING AT LEAST TWO PARTS HAVING DIFFERENT AND PROFILE PROPERTIES OBTAINED

摘要

THE PRESENT INVENTION RELATES TO A PROCESS FOR THE CO-EXTRUSION PRODUCTION OF PROFILES COMPRISING AT LEAST TWO PARTS. / P P THE PROCESS IS CHARACTERIZED IN THAT IT CONSISTS IN FEEDING THE EXTRUSION LINE, WITH LESS THAN A FIRST AND A SECOND EXTRUDABLE COMPOSITIONS, DIFFERENT BUT ADAPTED TO EACH OTHER, THE FIRST COMPOSITION BEING THERMOPLASTIC AND THE SECOND VULCANIZABLE, AND THESE COMPOSITIONS BEING SENT IN THE SECTOR, AT THEIR RESPECTIVE TEMPERATURES OF EXTRUSION GENERALLY DIFFERENT, AND SO THAT THE TWO COMPOSITIONS ARE PRACTICALLY IN CONTACT WITH EACH OTHER THAN IN THE SECTOR. / P P APPLICATION TO CARRYING JOINTS JOINTS, WIPER BLADES, CLIPS FOR THE MOUNTING GREENHOUSES, JOINTS OF BODIES OF VEHICLES OR MACHINES, SIDE PROTECTIVE BANDS OF VEHICLES OR MACHINES, GLASS LAUNCHERS, ETC.