A process and plant are described for the continuous processing of flakes formed by at least two layers of different plastic materials attached to each other by gluing or by a hot-rolling process. The process provides for feeding the flakes to a delamination reactor (10) containing a first aqueous solution of chemicals kept at an adjustable temperature, keeping the flakes under stirring to separate from each other the layers of flakes of the at least two different plastic materials. The mixture of layers of flakes is then fed to an intensive washing equipment (20) containing a second aqueous solution of chemicals kept at an adjustable temperature. Once the washing has been carried out, the layers of flakes are drawn from the intensive washing equipment (20) to be transferred to other treatment stations downstream of the plant. A control unit (100) allows regulation of various process parameters.
A process and a plant are described for the continuous processing of flakes formed by at least two layers of different plastic materials attached to each other by gluing or by a hot-rolling process. The process provides for feeding the flakes to a delamination reactor (10) containing a first aqueous solution of chemicals kept at an adjustable temperature, keeping the flakes under stirring in such a way as to separate from each other the layers of flakes of the at least two different plastic materials. The mixture of layers of flakes is then fed to an intensive washing equipment (20) containing a second aqueous solution of chemicals kept at an adjustable temperature. Once the washing has been carried out, the layers of flakes are drawn from the intensive washing equipment (20) to be transferred to other treatment stations placed downstream of the plant. A control unit (100) allows to regulate various process parameters, including the concentration, temperature and residence time of the flakes in the delamination reactor (10), as well as the concentration and residence time of the mixture of layers of flakes in the intensive washing equipment (20).
A winding machine (10) is disclosed comprising at least one reel holder (12) mounted on a supporting frame (11) and rotatable around its own axis (13), and a plurality of reels (1-4) mounted on the holder (12) and integrally rotatable therewith so that at least one first reel (1) is in at least one operative winding position of a bobbin (5). It is further described a respective method for the in-line winding of bobbins (5) of stretch film (6), comprising the steps of rotating a core (7) on a reel (1) in an operative winding position to wind the film (6) onto the core (7), positioning a contact roll (15a) in at least one proximal contacting position in which it contacts the winding bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the core (7), bringing the reel (1) from the operative winding position of the bobbin (5) to an operative unloading position of the bobbin, positioning an accompanying roll (15b) in at least one proximal contacting position in which it contacts the bobbin (5) for facilitating the peripheral winding of the stretch film (6) on the bobbin (7), transversally cutting the stretch film (6) and unloading the bobbin (5). The movement of the contact roll (15a) and the accompanying roll (15b) is carried out by means of electric actuators (18a, 18b).
A machine and a method for the continuous removal of labels from plastic containers made of recyclable material are described. The machine comprises a fixed treatment chamber in which an agitator provided with a plurality of vanes is rotated. Toothed plates are mounted in a removable way on at least one of the flat surfaces of each of the vanes.
B08B 9/38 - Cleaning of containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans, are brought the apparatus cleaning by using scrapers, chains, grains of shot, sand or other abrasive means
B32B 43/00 - Operations specially adapted for layered products and not otherwise provided for, e.g. repairingApparatus therefor
6.
MACHINE AND METHOD FOR CONTINUOUS REMOVAL OF LABELS FROM CONTAINERS MADE OF PLASTIC MATERIALS
A machine and a method for the continuous removal of labels from plastic containers made of recyclable material are described. The machine comprises a fixed treatment chamber (10) in which an agitator (20)provided with a plurality of vanes (22) is rotated. Toothed plates (40) are mounted in a removable way on at least one of the flat surfaces of each of the vanes (22).
B08B 9/38 - Cleaning of containers, e.g. tanks by using apparatus into or on to which containers, e.g. bottles, jars, cans, are brought the apparatus cleaning by using scrapers, chains, grains of shot, sand or other abrasive means
7.
MACHINE AND METHOD FOR CONTINUOUSLY WASHING CONTAINERS MADE OF PLASTIC MATERIAL, AND REMOVAL OF CONTAMINANTS AND LABELS FROM THEIR SURFACE
A machine and a method are described for washing and removal, in a continuous manner, of contaminants and labels from plastic containers made of recyclable material. During washing, the containers pass inside a washing chamber and are subject to a high level of friction caused by an agitator rotating at high speed. Tearing means are also provided to facilitate detachment of the contaminants from the surface of the containers.
