System and method for producing plastic products from recycled mixed plastic waste and plastic product
AssigneeRexest Grupp OÜ
InventorsAndrus VALDMAA, Aivo KÄSNAR, Aarne SAAREVÄLI
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Abstract
System and method for producing plastic products from a recycled plastic mix of unidentified, unclean and unsorted mixed plastic waste comprises the thermal and mechanical processing of the recycled plastic waste using continuous extrusion foaming, two-phase cooling, continuous metering of the pulling strength and automatic adjustment of the pulling speed and extrusion speed.
Claims17
A system for producing plastic products from recycled mixed plastic waste comprising a system for mixing raw materials, a first conveyor, a hopper, a second conveyor, a fine mixer with a weighing system, a control panel, an extruder, a system of calibration matrices on a calibration table, a water-cooling bath, a pultrusion machine with a converter and an electric motor with a reducer, and an automatic cutter, wherein:
- the extruder comprises a motor;
- a gearbox;
- a frame;
- cooling ventilators;
- a screw that has a feeding zone, a compression zone, and a mixing zone;
- a barrel that includes multiple heating zones;
- an extrusion head;
- a die;
- and a head extension that is also used as the first cooling zone;
- the system of calibration matrices comprising a first calibration matrix that is connected to the extrusion head extension;
- a second calibration matrix, third calibration matrix, a forth calibration matrix, each of them comprising a bottom, a lid and two sides and that are rigidly fixed to one another, thus forming an inner chamber of the matrices;
- and cooling channels;
- the pultrusion machine constantly measuring pulling strength and pulling speed and adjusting extrusion speed automatically.
Dependencies are inferred from the claim text.