EXTRUDERS FOR RECYCLING AND SPECIAL APPLICATIONS

Always ready to try out new applications, COMAC is today a partner in the development of customized production processes.

Co-rotating twin-screws for recycling

Thanks to the high degassing capacity guaranteed by the co-rotating twin-screw extruder, it is possible to process  PET flakes without drying and crystallizing, obtaining a material suitable for different applications, such as the  production of fiber or of sheets for thermoforming and re-granulation/compounding.

Another use of co-rotating twin-screw extruders is the recycling of materials from industrial polyolefin-based molded waste.

BIO PLASTIC

Exploiting our know how, built in the most different plastic fields, we developed customized solutions for biomaterials (e.g. PLA, starch based, polymers and biomaterials compounding )

The combination of our twin screw extruder, designed for a “gentle” mixing , with specific degassing and liquid injection systems, allows us to get optimal results in terms of quality and production capacity

Co-rotating twin screw extruders for TPU continuous polymerization

The extruder is configured for direct feeding of liquid monomers by suitable dosing units provided with metering pumps; the whole thermoregulation system allows for a perfect temperature control resulting in the target grade of polymerization. Geometry of screws prevents  any polymer degradation.

Reinforced sheet extrusion with fiberglass

Demand of high mechanical properties, reduction of weight and recycling issues in the automotive market push the producers to develop new technologies and materials.

Following this trend, COMAC has developed a special plant with an innovative processing solution by which long glass fibers (roving) are blended in a polymeric matrix producing reinforced anti-crash sheets in a continuous extrusion process.

This extrusion plant feeds in-line compression molding machines for making automotive under-body panels (e.g.: inner door panels), covers etc.

The process allows production of parts with higher mechanical properties in comparison with standard long glass fiber compression molding systems.

The thermoplastic matrix allows for an easy end-of-life recycling of the molded parts.