Melt-blown (cooling) Master Batch compounding pelletizing line

The main ingredient of PP cooling master batch is PP resin and peroxides, reducing the molecular weight of PP through the peroxides. Then reduce PP processing temperature(20~30℃), improve melt index of PP. The cooling master batch is mainly used in PP spinning, PP woven bags, high fluidity injection molding parts, PP pipe extrusion etc the forming process, to improve the comprehensive fluidity of the resin melt, enlarge the coloring range of the resin, reduce extrusion temperature, and make the resin can be extruded fastly and stably.

1. Raw material automatic feeding system

The storage and transportation of raw materials adopt automatic feeding device, PP resin and peroxides adopts loss-in-weight dosing feeder to feed it into the twin screw extruder. Ensure accurate dosing of each component to guarantee the stable melt index of the master batch.

2. Main extruder with high torque and long L/D

Adopts high torque gearbox and configure with long L/D barrels and screw, long barrel length can provide a longer residence time, allowing the peroxide and PP resin to slowly degrade and distribute evenly and reduce the melt index fluctuation to make it more uniform; it is equipped with 1~2 vacuum degassing ports to extract residual peroxide and small molecular by-products, thus reducing the smell of the masterbatch.

3. Special designed die head

The die head has special designed channel, the high fluidity melt uniformly flow inside the whole die mold of the head, the residence time is the same everywhere in the width direction to ensure the uniform extrusion velocity of melt in each outlet hole of the die.

4. Special designed water bath

The water bath is with extended design, and is equipped with slide type guiding device near the head end, the flow guiding device is close to the discharging hole of the die and connect with water inlet. The flow guiding device rapidly cools the high-speed easy adhesion melt flowing out of the discharge hole, and quickly introduces it into the water bath through water flow and completely cool the strand. The special designed water bath can effectively avoid the high MI easy adhesion melt staying at the die to cause strand accumulation.

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.