Co-rotating Twin Screw Automatic Metering / Weighing / Conveying Pelletizing Compounding Line

CYKF is committed to the R&D and manufacturing of the automatic extrusion systems, and constantly strives for perfection. The CK-HT series Co-rotating Twin Screw Automatic Metering Weighing and Conveying Pelletizing Compounding Extrusion Line successfully overcomes the problem of customer limited site space and configures the optimal traffic line for customers. The high-efficiency system shows the advantages of safety, convenience, efficiency and quality, reflecting the greatest value of CYKF.

Possible materials :
TPU, PLA, PVA, SEBS, EVA,  Hot-melt adhesive, Special resin, and Micro pellets, etc.

How it works :
①Automatic material preparation system ➜ ②Material refill tank ➜ ③Loss-in-weight feeder ➜ ④Extruder ➜ ⑤Water ring pelletizing system ➜ ⑥Centrifugal dryer ➜ ⑦Vibrating screening Unit ➜ ⑧Outside cycling type silo system ➜ ⑨Powder loader ➜ ⑩Big bag filling system

The automatic production line is able to operate itself from material feeding to final pellet packaging. The raw materials are evenly mixed by the material preparation system and fed into the plastic extruder by loss-in-weight feeder. The materials are melted, kneaded, and extruded from the die and cut into pellets by water ring pelletizing system. The pellets are cooled and dried before delivering to outside cycling type silo system. The screened pellets are then packaged by big bag filling system.

• Automatic material preparation system
  

  The whole system includes hopper, storage tank, material refill tank and powder loader. Its automatic and precise delivery greatly saves manpower and can precisely transport small amount of powders as well.



• Loss-in-weight feeder
  

  Loss-in-weight feeder is a gravimetric metering device that provides upstream materials a stable, even, and accurate feeding to plastic extrusion machine. The feeder receives constant feedback from weighing device to ensure that each batch of materials are delivered in precise amount.



• Extruder screw
  

  The screw zones of conveying, melting, mixing, compressing, venting, and vacuum are designed according to customers’ material formulations. From steel selection, machining accuracy to quality management, we have strict standard procedures to make sure the good quality and lifetime of these key components.



• Die
  

  The die material and mold runner must be selected and designed according to the physical properties and characteristics of plastics to avoid occurrences of uneven material flow rate, retention, excessive molding pressure, in-mold temperature increase, decomposition and carbonization or other situations that may damage material properties of plastics. The die is equipped with pressure gauge to monitor production conditions.



• Water ring pelletizing system
  

  The pelletizing system is suitable for producing soft plastics. After the melt comes out through the die, the rotating knives immediately cut the melt into pellets. The pellets are cooled and transported by water at the same time to the downstream drying equipment.



• Centrifugal dryer
  

  The equipment belongs to the downstream process of underwater pelletizing system. It is to remove surface moisture on the cooled plastic pellets. By eliminating the moisture, a better quality of the pellets can be obtained.



• Vibrating screening unit
  

  The machine body is made by stainless steel, it can filter out different sizes of pellets and also remove dust on pellet surfaces.



• Outside cycling type silo system
  

  The system is to evenly mix pellets to keep the average quality of each batch.



• Powder loader
  

  The powder loader can remove dust from pellet surface to keep good quality of the materials.



• Big bag filling system
  

  The high automation big bag filling system is steady and efficient. It can fill pellets fast and precisely. It’s an ideal equipment for large-size packaging of materials.