Pomini Farrel S.p.a.

Andrea Guggiari

A machine for manufacturing thermoplastic polymers including a plurality of coaxial components adjacent to and made integral with one another, the components forming a longitudinal chamber receiving a pair of interacting shafts having portions correspondingly differentiated to provide sections for feeding and premixing the compound, thus forming a single assembly with coaxial components capable for carrying out full processing of the compound from the raw material to extrusion, without discontinuity of sequence.

Machine for the extrusion of thermoplastic polymers and the like

The method for maintaining a constant, predetermined contact pressure on elements for cutting under water in granulator machines or applying to the blades of the cutters a force in the opposite direction to a hydrodynamic thrust force, and the apparatus adapted to utilize a control of a constant pressure by actuator means for applying axial thrusts to the drive shaft carriage and the cutters within a slidable bushing and detecting the hydrodynamic thrust force acting on the cutters and regulating the force supplied to the actuators.

Method and apparatus for maintaining a constant contact pressure on

The plate for extrusion, having discharge holes equipped with fitted inserts, in which the discharge holes each possess a seating having a circular base surface and an outlet opening at the surface of the plate having a substantially elliptical outline, the major axis of the ellipse being equal to the diameter of the base surface, an insert being fitted in the seating which possesses a base surface, facing towards the inside of the plate, having a substantially elliptical outline which can be inscribed, with slight clearance, inside the opening of the seating, and having an opposite surface, facing towards the outside of the plate, having a circular outline with its diameter equal to the minor axis of the base.

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Como, Italy

Andrea Guggiari