The main component of the PP woven bag granulating machine is the plastic extruder, which is composed of an extrusion system, a transmission system, and a heating and cooling system.
The main component of the PP woven bag granulating machine is the plastic extruder, which is composed of an extrusion system, a transmission system, and a heating and cooling system. The extrusion system includes screw, barrel, hopper, head and die.
In the processing process, with the help of auxiliary machinery, the plastic film is added to the extruder and heated by the heating device to melt the plastic. The screw in the extruder moves under the drive of the reducer to remove the melted plastic from the base of the barrel. After part of the machine head is filtered and drawn to achieve the purpose of regeneration.
After the plastic film is added to the hopper, falls smoothly on the screw from the hopper, and is bitten by the screw thread. As the screw rotates, the screw is forced to advance toward the machine head, forming a mechanical conveying process.
When the PP woven bag granulating line is running, due to the gradual decrease of the screw thread depth and the existence of resistance such as the filter screen, the splitter plate and the head, a high pressure is formed during the plasticization process, which compacts the material and improves Improved thermal conductivity helps the plastic melt quickly.
Normal:
| Model | SJ45 | SJ65 | SJ90 | SJ100 | SJ120 |
| Output(kg/h) | 10-60 | 100-150 | 180-250 | 250-350 | 300-600 |
High output,low consumption:
| Model | SJ150 | SJ160 | SJ180 | SJ200 |
| Output(kg/h) | 400-700 | 600-1000 | 1500-2000 | 2000-3000 |
Belt Conveyor
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 contrl system, to warn and stop the system, in case that metal is found in feeding.
Compactor / Agglomerator
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.
Extruder
A specialized single screw extruder applied to gently melt the pre-compacted material. The plastic scraps will be well melted, plasticized in a 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
Water-ring Die-face cutting system
Water-ring die-face/Strand cutting methods are usually adopted. In water-ring die-face cutting system, the rotary cutting blades will be pneumatically fit completely and closely to the die-face surface to ensure efficient cutting. Rotary speed of the blades is automatically adjusted by module system according to melt pressure at the die face.
Vibration drying system
Advanced dewatering vibration sieve combing with horizontal-type centrifugal dewatering present high performance dried pellets and lower energy consumption.Combine crushing, compacting and plletizing steps in one system, less-labor cost.Higher efficiency feeding, suitable to film, filament, raffia, foaming materials;Higher output and lower energy consumption
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