Free Pre Drying and Crystallization PET Material Extrusion Calendering Forming Production Line

Free Pre Drying and Crystallization PET Material Extrusion Forming system:

PET material hygroscopicity is strong, if the moisture content too high, hydrolysis will occur under high temperature processing, so drying treatment before processing in traditional technology is necessary. Facing this feature, CENMEN developed modified drying free directly forming technic: using self-developed exhaust extruder, vacuum exhaust system, sheet forming auxiliary machine or granulating auxiliary machine form a complete set of free pre-drying and dehumidification PET production line. At the same time, CENMEN drying free directly forming technic has gradually replacing the traditional drying treatment wildly in sheet forming, recycled pelletizing industries, the large amount of energy consumption and time consumption in the original dehumidification and drying process are eliminated.

Free Pre Drying and Crystallization PET Material Twin Screw Extruder:

2-3 Vacuum exhaust chamber, large opening sized barrels are equipped with this twin screw extruder. Roots vacuum pump set, which includes optimized first stage water ring pump and second stage roots pump, can provide high extraction rate and vacuum, rapid removal of water and small molecular organic matter in PET, prevent large degree of hydrolysis. The extruder also sets up with natural exhaust opening, vaporize the moisture before PET is completely melt, in order to reduce the thermal degradation in the process of melting, the weak shear element should be used in the melting section and the melt conveying section of the screw structure. High torque low speed type of transmission case, the set running speed for the extruder is 250-300 rpm, since high screw speed will produce high shearing rate, which will lead to the rapid increase of material temperature.

The core extruder equipment includes parallel twin screw compounding extruder, reciprocating

compounding kneader, double rotor compounding extruder, SCP high viscosity self cleaning

reactor and large capacity devolatilizer, etc.

At the same time, based on the above main extruder, the design and manufacture of a

complete set of compounding pelletizing production line equipment and compounding

extrusion forming production line equipment can be realized. It is mainly used in the fields

of engineering plastics, modified plastics, wire and cable materials, rubber, packaging,

building medical chemical industry, chemical fiber textile, household appliance and other

industries (see the application case for details).

The existing factory area of the company is 46500 m2 (of which the parent company is

38000m2, and the subsidiary (Nanjing Cenmen) is 8500m2), The core parts and system

of the extruder are designed and manufactured by the company, such as barrel, screw,

gear box, etc. The company has advanced NC machining center, NC screw grinder,

CNC machine tool and other machining equipment. Equipped with Swiss imported

three-coordinate detector and Japanese imported spectral detector and other

advanced inspection and testing equipment. There are complete quality control means

and system from processing to testing, which fully ensure the stability and reliability of

product quality.

The extruders produced by Cenmen company are exported to nearly 40 countries, such as

Germany, Russia, belarus, Japan, Korea, Israel, Ukraine, magiddon, Iran, Thailand, Indonesia,

Brazil, India, Mexico, South Africa, etc.