Method for continuously mixing polymer materials and associated machine with partially tangential and interpenetrating rotors

摘要

Method for continuously mixing polymer materials by means of a continuous mixing machine which comprises a mixing chamber (5) provided with at least one opening (4a, 6a) for supplying the polymer and at least one mouth (5d) for discharging the mixture and having arranged inside it a pair of rotors (7) parallel with one another, said method comprising the stages of: supplying the material and any additives to the mixing chamber (5) through said supply mouth; taking up, by said pair of rotors (7), of the materials supplied for mixing and feeding thereof towards said outlet (5d); and involving the following: at least one pre-mixing stage performed by means of axial sections (7b) of said rotors (7) rotating tangentially with respect to one another and at least one subsequent mixing stage performed by means of axial sections (7c) of said rotors rotating in a mutually interpenetrating manner.