The CVAC module allows recycling and compounding in one process step
Starlinger Recycling Technology has launched a machinery module that allows recycling and compounding in one process step, eliminating the need for two separate processes.
The C-VAC module from Starlinger makes it possible for plastics recyclers to break into new markets, as waste from film, injection moulding and fibre production as well as post-consumer waste can be upgraded to reinforced or filled plastics in the course of the recycling process, therefore achieving a greater added value.
C-VAC can be integrated in existing plastics recycling lines and allows easy and exact dosing of additives, filling and reinforcing materials during the recycling process.
After the ground and optionally preheated material has been melted in the main extruder, compounding takes place in the degassing extruder after melt filtration. Since this extruder functions independently of the main extruder, screw design and speed can be selected as needed in order to achieve perfect compounding results. Depending on the properties of the material being added – powders, for example, require a certain screw length for optimum dispersion – dosing can be done before intake into the extruder.
Unlike conventional compounding extruders, the C-VAC extruder uses a single screw. This is especially relevant in fiberglass compounds, says Starlinger, because it reduces fibre breakage during compounding to a minimum, resulting in greater strength in the items subsequently being produced from the compound.
Output quantities range, depending on the size of the line, from 150 kg/h to 2,700 kg/h. The separate C-VAC module can be integrated into any existing Starlinger recycling line, opening up to recyclers the vast potential for secondary materials in the field of compounds. Starlinger will exhibit the recycling technology at Fakuma: Hall B2, Booth 2115.