Project Description

Compacting/Agglomerating and pelletizing line

Recycling Material: HDPE, LDPE, PP, BOPP, CPP, OPP, PA, PC, PS, PU, EPS
Final Product Shape: PelletsGranules
System Composition: Belt conveyor, cutting compactor, single screw extruder, pelletizing device, water cooling unit, dewatering section, conveying blower and production silo
Output Range: 150kg/h-1000kg/h
Feeding Device: Belt conveyor (standard),rolls hauling off device (optional)
Compactor Volume: 300-1200L
Screw Diameter: 80-160mm
Screw material: 38CrMoAlA nitride steel(SACM-645),bimetallic(optional)
Screw L/D: 31/1, 32/2, 34/1, 36/1(depending on features of recycles)
Barrel’s Heating: Ceramic heater or casting Aluminum heater
Barrel’s Cooling: Air cooling through fan blowers
Vacuum Degassing: Double vented degassing(Standard)
Pelletizing Type: Water ring die-face hot pelletizing
Optional Devices: Metal detector, rolls hauling off device, micro feeder for masterbatch, additives, chiller etc.

Gangsu compacting and pelletizing system combines function of crushing, compacting, plasticization and pelletizing to one step. Applied in the plastics recycling and pelletizing process. Our system is a reliable and efficient solution for plastics films, raffias, filaments, bags, woven bags and foaming materials re-pelletizing.
Final productions produced by compacting and pelletizing system are in the form of pellets/granules, can directly put into the production line for film blowing, pipe extrusion and plastics injection, etc.

As standard design, plastic scraps such as film, filament, raffias conveyed into the compacting room through belt conveyor; to handle rolls’ scraps, roll hauling off device is an optional feeding method.
Motor drives of conveyor belt and hauling device cooperate with ABB inverter. Feeding speed of conveyor belt or roll hauling off is fully automatic based on how full the compactor’s room is. Metal detector can be combined with belt conveyor, and can interlock with control system, to warn and stop the system, in case that metal is found in feeding section.

Main motor Power(kw)37+3090+55132+75160+90200+110

Crushing and compacting

The rotatory blades of compactor will cut up incoming scraps. Frictional heating which caused by high speed rotatory blades will heat and let scraps shrinking just below their agglomerating point. Optimal designed guide structure compacts the material and directs it into extruder screw. Crushes, dries and compacts the material which enables a fast and stable feeding from the compactor directly into the extruder.

Plasticization and degassing

A specialized single screw extruder applied to gently melt the pre-compacted material. The plastic scraps will be well melted, plasticized in a 34D to 36D processing section. With double-zone vacuum degassing system, volatiles such as low molecular and moisture will be removed efficiency, especially suitable to heavy printed film and material with water content.

Melt filtration

A regular single-plate/ piston double-station screen changer or non-stop double-plate/ piston four-station can be installed on head of extruder to present significant filtration performance. The requirements on the filter technology depend heavily on the quality of the input material as well as the planned use of granules.


Die-face water ring pelletizing system set as the standard granulating method in our compacting and pelletizing system. Self-adjusting pelletizing head for the best granulate quality and long uptime because of the consistently correct blades pressure. RPM of rotatory blades is automatic based on melt extruding pressure.

Vibration dry and packing system

Advanced dewatering vibration sieve combining with horizontal- type centrifugal dewatering present high performance dried pellets and lower energy consumption.

Advantages of our compacting and pelletizing system

►Combine crushing, compacting and pelletizing steps in one system, less-labor cost;
►Higher efficiency feeding, suitable to film, filament,raffia, foaming materials;
►Higher output and lower energy consumption.

Other benefits
Lower investment cost for a high quality and durable machine;
Low energy consumption with high production output;
Fast machine delivery and installation: XINRONG produces on an average of 10 sets of plastic machines per month and can deliver the machine faster than most manufacturers.
The regular delivery time of an XINRONG recycling machine is 30 working days.
Service and support
Overseas installation and training are available;
Machine warranty with spares in stocking and in-time delivery.