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CYKF CK-S series Single Screw Underwater Pelletizing Extrusion Line can be applied to a wide range of applications. It is especially suitable for materials with high viscosity, low MI, and difficulty to be shaped, e.g., TPE and TPR.

Possible materials :
TPU, TPE, TPV, TPR, PP, PS, PLA, PVA, SEBS, EVA, Rubber, Hot-melt adhesive, Special resin, and Micro pellet, etc.

How It Works :

• Dosing feeder

  Dosing feeder adopts counter-rotating twin screw design, it makes transportation of materials more stable.



• Extruder screw

  Every section of the screw is designed according to material formulation. The purpose is to ensure the plastics are fully mixed to achieve high quality and high capacity extrusion performance. Our strict quality management guarantees good quality and long service life of the key component.



• Die

  Die material and mold runner must be selected and designed according to 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.



• Underwater pelletizing system

  The die face of extruder is immersed in water. When melts exit the die holes, they are immediately cut into pellets by rotating knives, and cooled also transported by water to downstream equipment. Underwater pelletizing system is capable of handling virtually any type of polymer.



• Centrifugal dryer

  The equipment can eliminate moisture on pellet surface.



• Vibrating screening unit

  The machine body is made by stainless steel, it can filter out different size of pellets.



• Storage tank

  Storage tank is an important part of extrusion line. The tank body is made by stainless steel and has different capacities for choice. Big bag filling machine or bagging machine are also available on request.

CYKF self-made strand pelletizers are able to handle most kinds of plastics. The strand pelletizers can cut cylindrical plastic strands into even pellets. In order to response different demands on capacity, CYKF develops 5 models for choice. The modular design can easily fit into any existing production lines to immediately support production.

Moreover, we provide the complete product range for strand pelletizer, including water tank, strand dryer, vibrating screen and storage tank. The comprehensive service saves time as well as solves troubles on system integration. All equipment is designed and manufactured by CYKF which guarantees the quality of the products.

Currently the CYKF strand pelletizers are widely used in polymer, recycling, chemical, electronics, automobile, and food industries, etc. The stable operating performance and long service life earns good reputation from customers, and the excellent features have already made contributions to lots of industries in the world.

Horizontal Blender is used for mixing two or more additives, especially for the mixing of pellets and powders that are viscous or easily occurring materials bridging. The blender equips with counter-rotating blades, which allows the materials to be mixed quickly, evenly, and efficiently. Even the materials have different specific gravity and size, the blender still can reach good result by its high-performance blade design.

CK-HS series Single Screw Extruder can be applied to wide applications, e.g., masterbatch, compounding, and recycling. The screw rotational speed is second only to our CK-DHS high-throughput series.

• Extruder screw :

  The extruder screw of CYKF’s single screw extruder is customized to satisfy different material formulations. The optimal configuration of screw zones ensures high-efficiency extrusion performance. The strict quality management guarantees good quality and long service life of this critical component.



• 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.

CYKF developed its own twin screw side feeder to enable the feeding of additives and fillers, such as glass fiber, CaCO3, TiO2, Talc, fire retardant, etc. Materials in powder or pellet are all acceptable. Our rich experiences in plastic extrusion help us catch the critical design points to satisfy different production requirements.

CK-DHS series Single Screw Extruder has the fastest screw rotational speed and highest throughput among all single screw series. It equipped with high-efficiency gearbox which is capable of bearing greater back pressure and torque force during production. The low-noise and durable gearbox is adjustable to satisfy different production conditions.

Possible materials :
ABS, HIPS, PP, PE, PC&ABS, PC. PMMA.

• Extruder screw :
  

  The extruder screw of CYKF’s single screw extruder is customized to satisfy customers’ formulations. The optimal configuration of screw zones brings high-efficiency extrusion system and ensures high-quality pellet. Thanks to our strict quality management that guarantees good quality and long service life of our screws.



• 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.

Loss-in-weight feeder is a gravimetric metering device that provides continued feeding without cause batch problems. The feeder receives constant feedback from the sensor to ensure the materials are delivered in a precise amount that saves manpower successfully.

CYKF provides different types of loss-in-weight feeders, including single screw, twin screw, and the models for feeding liquids. Various sizes and configurations are available to satisfy wide applications.

Our team equipped with both profession and experience in the field of plastic extrusion. We provide suggestions and service for equipment integration to help customers save more money and get higher profits.

CK-SC series Side Shredding Type Plastic Recycling Pelletizing Line is ideal for recycling clean or washed plastic film, fiber, carpet, fabric, jumbo bag, etc.

Possible materials :
PP, HDPE, LDPE, PET, PC film, Nylon fiber, PP carpet, Jumbo bag, EPE, EPP, EPS, etc.

How It Works :
①Conveyor ➜ ②Side shredder ➜ ③Extruder ➜ ④Water ring pelletizing system ➜ ⑤Centrifugal dryer ➜ ⑥Vibrating screening unit ➜ ⑦Storage tank

The conveyor is to deliver plastic wastes to the side shredder for crushing. The recycled plastic resources must be broken into small pieces before fed into the single screw extruder to avoid causing screw abrasion. The crushed pieces are melted, kneaded, and filtered by the extruder, then pass through the water ring pelletizing system to be cut into pellets. All the pellets are cooled, dried, and screened to become reusable materials.

• Conveyor
  

  Conveyor is to deliver plastic wastes to side shredder for crushing into small pieces. Different specifications are available.



• Side shredder
  

  The equipment is suitable for shredding light, fluffy, or foaming plastic wastes. The recycled plastics must be crushed into small pieces before fed into plastic extruder to prevent large fragments from causing overload and stop of the shredder cutter.



• Plastic extruder
  

  Plastic extruder is to melt, deliver, knead, and filter plastics. The extruder screws and barrels are the key components. The design, material selection, and machining accuracy will affect the quality of the final finished pellets.



• Water ring pelletizing system
  

  Water ring pelletizing system is widely used, but it is not suitable for sticky, low-viscosity materials because pellets can stick together before they hit the water. When the molten polymer exits the die holes and is cut into pellets by rotating knives in air. The pellets produced outwards are cooled by water and then transported to downstream centrifugal dryer.



• Centrifugal dryer
  

  The equipment is located after pelletizing machine. It can eliminate surface moisture on the plastic pellets.



• Vibrating screening unit
  

  The unit can filter out different sizes of pellets to ensure a good average quality.



• Storage tank
  

  The storage tank is to store plastic pellets and it is made by stainless steel. Different sizes are available on request. Customers can also choose big bag filling machine or bagging machine.

The CYKF Vibrating Screen is used for sorting plastic pellets. It divides the pellets discharged from pelletizer. The machine can be combined with our strand pelletizing or underwater pelletizing extrusion lines.

CK-SF series Side Force Feeder Type Plastic Recycling Pelletizing Line is ideal for recycling clean or washed plastic crushed films.

Possible materials :
EPE, EPP, EPS, PP, HDPE, LDPE, ABS, PS crushed films.

How It Works :
①Side force feeder / Dosing feeder ➜ ②Plastic extruder ➜ ③Water ring pelletizing system ➜ ④Centrifugal dryer ➜ ⑤Vibrating screening unit ➜ ⑥Storage tank

Side force feeder / Dosing feeder is to feed crushed films into plastic extruder for melting, kneading, and filtering. The melts are extruded out from the die holes and cut into pellets by water ring pelletizing system. All the pellets are cooled, dried, and screened to become reusable materials.

• Side force feeder
  

  The crushed films are fed into plastic extruder via side force feeder. The transportation system of the side force feeder can effectively increase feeding capacity.



• Dosing feeder
  

  Dosing feeder adopts counter-rotating twin screw design, it makes transportation of materials more stable.



• Plastic extruder
  

  The plastic extruder is to melt, deliver, knead, and filter recycled plastics. The extruder screws are the critical parts of the plastic extrusion machine. CYKF has strict standard procedures to control quality of screw steel, machining accuracy, and finished quality to ensure a long service life.



• Water ring pelletizing system
  

  Water ring pelletizing system is widely used, but it is not suitable for sticky, low-viscosity materials because pellets can stick together before they hit the water. When the molten polymer exits the die holes and is cut into pellets by rotating knives in air. The pellets produced outwards are cooled by water and then transported to downstream centrifugal dryer.



• Centrifugal dryer
  

  The unit is to eliminate moisture on the surface of plastic pellets.



• Vibrating screening unit
  

  The unit can filter out different sizes of pellets to ensure a good average quality of the materials.



• Storage tank
  

  The storage tank is to gather plastic pellets. It is made by stainless steel and has different capacities for choice. Big bag filling machine or bagging machine are also available on request.

The strand dryer designed by CYKF is used for strand pelletizing production method.

CK-SFD series Side Force Feeder Type Plastic Recycling Pelletizing Line is ideal for recycling dirty plastic crushed films.

Possible materials :
EPE, EPP, EPS, PP, HDPE, LDPE, ABS, PS crushed films or flakes.

How It Works :
①Side force feeder ➜ ②1^st Plastic extruder ➜ ③2^nd Plastic extruder ➜ ④Water ring pelletizing system ➜ ⑤Centrifugal dryer ➜ ⑥Vibrating screening unit ➜ ⑦Automatic big bag filling system

Side force feeder is to feed crushed plastic films into plastic extruder. Since the recycled plastics are dirty, the melts must be processed twice by extruder to maintain quality. By repeating process of melting, kneading, and filtering, it ensures impurities of the melts are removed during extrusion. The melts then pass through water ring pelletizing system to be cut into pellets. The pellets are cooled, dried, and screened to become reusable resources.

• Side force feeder
  

  The crushed plastic films are fed into plastic extruder via side force feeder. The equipment can effectively increase feeding capacity of films.



• Extruder screw
  

  Extruder screw is the heart of the plastic extruder. The screw design, material, and machining accuracy are going to determine production efficiency and material quality.



• Water ring pelletizing system
  

  Water ring pelletizing system is widely used, but it is not suitable for sticky, low-viscosity materials because pellets can stick together before they hit the water. When the molten polymer exits the die holes and is cut into pellets by rotating knives in air. The pellets produced outwards are cooled by water and then transported to downstream centrifugal dryer.



• Centrifugal dryer
  

  The equipment is to eliminate surface moisture on pellets. It is located after pelletizing machine.



• Vibrating screening unit
  

  The unit can screen out different sizes of plastic pellet to ensure a good average quality of the materials.



• Automatic big bag filling system
  

  The system enables efficient filling of bulk bags with automatic system. It is stable and easy for operation. It’s an ideal equipment for large-size packaging of materials.

CK-HSD series Double Section Plastic Recycling Pelletizing Line is ideal for recycling dirty plastic flakes.

Possible materials :
PP, PE, ABS, PS, POM, PC, PA, PMMA, PBT, PET, etc.

How It Works :
①Force feeder ➜ ②1^st Plastic extruder ➜ ③2^nd Plastic extruder ➜ ④Strand pelletizing system (Water tank ➜ Strand dryer ➜ Pelletizing machine) ➜ ⑤Vibrating screening unit ➜ ⑥Storage tank

Force feeder is designed to feed plastic flakes into the single screw plastic extruder without causing bridging. Since the recycled wastes are dirty, they must be melted, kneaded, and filtered in the extruder twice to keep the purity, and then pass through strand pelletizing system to be cooled, pelletized, dried, and screened before becoming usable pellets again.

• Force feeder
  

  The design of the force feeder is able to avoid any possible bridging during recycled flakes are fed into the plastic extrusion machine.



• Extruder screw
  

  Extruder screw is the heart of the plastic extruder. The function of the screw is to melt, deliver, and knead plastics. From steel selection, machining to quality management, we have strict standard procedures to ensure a long service life of this critical component.



• Water tank
  

  After the plastic is extruded into strips from the die of the extruder, the strips enter the water tank and are cooled and formed by water. The cooled strips are then dried and cut into pellets. The length of the tank can be customized according to request.



• Strand dryer
  

  The strand dryer is to remove surface moisture on the cooled plastic strips. There are 2 stages of the dewatering process. The 1^st stage is to absorb most of the moisture on plastic strip surfaces, and the 2^nd stage is to dry the strips by blower.



• Plastic pelletizer
  

  The pelletizing machine is to cut plastic strips into pellets. The unique round knife design has extremely high wear resistance and can exert outstanding cutting performance.



• Vibrating screening unit
  

  The equipment can screen out different sizes of pellets and remove dust on pellet surface.



• Storage tank
  

  The storage tank is to gather plastic pellets. It is made by stainless steel and has different capacities can be selected. Big bag filling machine or bagging machine are also available on request.

CYKF has good reputation in PVC extrusion. Our CK-DT series Counter-rotating Twin Screw Extruder is especially designed for PVC. The available screw diameter is between 55 to 130mm. Thanks to our technical team put long term effort on this field which makes CYKF’s PVC extruder is competitive compared to other competitors. Our durable and high-efficient PVC extrusion pelletizing line is able to produce rigid PVC, soft PVC, medical grade PVC, UPVC, CPVC, and additives of foam or wood powders. We are pound to say the PVC extrusion line made by CYKF is no doubt the best choice for customers.

Possible materials :
UPVC, CPVC, Medical grade PVC, Soft PVC, Rigid PVC, Foam and wood powder additives.

How it works :
①Automatic material preparation system ➜ ②High-speed mixer ➜ ③Cooling blender ➜ ④Screw conveyor ➜ ⑤Temporary storage tank ➜ ⑥Force feeder ➜ ⑦PVC extruder ➜ ⑧Die face pelletizing system ➜ ⑨Cyclone tank ➜ ⑩Vibrating cooler ➜ ⑪Storage tank 

Materials are mixed by high speed mixer and delivered by screw conveyor to PVC extruder for extrusion. The vacuum system of PVC extruder removes waste gas during production. After the melts are extruded from the die, the materials are directly cut into pellets by a rotary cutter of the die face pelletizing system, then the pellets are transported by air to cyclone tank and cooled by vibrating cooler. All cooled pellets are stored by storage tank.

• Automatic material preparation system
  

  The whole system includes hopper, storage tank, material refill tank and powder loader. It helps save manpower and can precisely transport small amount of liquid oil and powders as well.
  



• High-speed mixer
  

  High-speed mixer can evenly mix PVC and additives. The mixed raw materials are then delivered to cooling blender to decrease temperature before going to the next procedure. The mixing speed of high-speed mixer is adjustable according to different formulations’ requirements.



• Cooling blender
  

  Cooling blender can rapidly decrease temperature of mixed raw materials to the required level, and screw conveyor will automatically deliver the materials to temporary storage tank for extrusion.



• Screw conveyor
  

  Screw conveyor is used to convey bulk materials from temporary storage tank to force feeder, it is especially suitable for transporting powders. The rotating speed of screws is stable which makes materials feeding more smoothly.



• Force feeder
  

  Force feeder can evenly mix powders and effectively avoid bridging during material feeding.



• Extruder screw
  

  CYKF customizes extruder screws according to customers’ material formulations. From steel selection, machining accuracy to quality management, we have strict standard procedures to make sure good quality and long service life of these key parts.



• Die
  

  CYKF estimates material properties and characteristics for selecting appropriate die material in combination with optimized runner design, that effectively avoids destruction on material properties due to excessive die temperature, uneven material flow rate, material jamming, excessive die pressure, decomposition and carbonization, etc. The die of the PVC extruder is designed with quick clamping in combination with linear guideway, making die open/close and die cleaning easy and fast.



• Die face pelletizing system
  

  The PVC pelletizing machine utilizes a specially cutter hub, providing convenient cutterhead dismantling and calibration.



• Cyclone tank
  

  Cyclone tank can separate air and pellets and process initial cooling for pellets.



• Vibrating cooler
  

  Vibrating cooler removes adherent dust and cools plastic pellets evenly and rapidly.



• Storage tank
  

  The material of storage tank is stainless steel. There are different capacities of the tank for choice. Big bag filling system is also available on request.

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.

CYKF is well-known in PVC extrusion. Our CK-DT series Counter-rotating Twin Screw Extruder is especially designed for PVC. The available screw diameter is between 55 to 130mm. We never stop improving our PVC extrusion technology and we love sharing ideas with customers. Our in-depth understanding of PVC enables us to design better extrusion lines compared to other competitors. CYKF’s PVC extruder is high-efficient and durable, its outstanding performances has earned highly praises from global users.

Possible materials :
UPVC, CPVC, Medical grade PVC, Soft PVC, Rigid PVC, Foam and wood powder additives.

How it works :
①Hopper (Force feeder/Dosing feeder) ➜ ②PVC extruder ➜ ③Die face pelletizing system ➜ ④Cyclone tank ➜ ⑤Vibrating cooler ➜ ⑥Storage tank

The mixed materials are delivered by hopper to PVC extruder for extrusion. The vacuum system of extrusion machine can remove waste gas during production. The melts come out from the die and are cut into pellets by die face pelletizing system. The pellets are transported to cyclone tank by air and then cooled by vibrating cooler before delivering to storage tank.

• Hopper
  

  Both force feeder and dosing feeder are available on request. The design of force feeder is able to avoid possible bridging during feeding and it can evenly mix raw materials. It is a standard equipment for soft PVC. As to dosing feeder, it adopts counter-rotating twin screw design and can make transportation of materials more stable.



• Extruder screw
  

  Extruder screws are customized according to PVC formulations. From steel selection, machining accuracy to quality management, we have strict standard procedures to ensure good quality and long service life of these key components.



• Die
  

  CYKF estimates material properties and characteristics for selecting appropriate die material in combination with optimized runner design, that effectively avoids destruction on material properties due to excessive die temperature, uneven material flow rate, material jamming, excessive die pressure, decomposition and carbonization, etc. The die of the PVC extruder is designed with quick clamping in combination with linear guideway, making die open/close and cleaning easy and fast.



• Die face pelletizing system
  

  The PVC pelletizing machine utilizes a special cutter hub, providing convenient cutter hub dismantling and calibration.



• Cyclone tank
  

  Cyclone tank can process initial cooling for plastic pellets.



• Vibrating cooler
  

  Vibrating cooler removes adherent dust and cools plastic pellets evenly and rapidly.



• Storage tank
  

  The storage tank is to store plastic pellets. It is made by stainless steel and has different capacities for choice. Big bag filling machine or bagging machine are also available on request.

CK-HT series Co-rotating Twin Screw Underwater Pelletizing Compounding Extrusion Line is designed especially for compounding materials with high viscosity, low MI, or difficulty to be shaped. The extrusion line can be applied to a wide range of materials and applications.

Possible materials:
TPU, TPE, TPV, TPR, PP, PS, PLA, PVA, SEBS, EVA, Rubber, Hot-melt adhesive, Special resin, and Micro pellet, etc.

How it works :
①Hopper ➜ ②Loss-in-weight feeder ➜ ③Side feeder ➜ ④Extruder ➜ ⑤Underwater pelletizing system ➜ ⑥Centrifugal dryer ➜ ⑦Vibrating screening unit ➜ ⑧Storage tank

The raw materials are fed into hopper and then enter into plastic extruder via loss-in-weight feeder. The additives are fed into extruder by side feeder. The materials are melted, kneaded, and extruded by plastic extruder. The extruded melts are cut into pellets by underwater pelletizing machine. Since the cutting chamber is completely filled with process water, the melts are immersed in water as they come out from the die holes. The pellets are cooled and transported by water to downstream drying and screening units to become finished pellets.

• 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.
  
  CYKF provides different types of loss-in-weight feeders, including single screw, twin screw, and models for liquids. Various sizes and configurations are available to satisfy wide applications.



• Side feeder
  

  The side feeder has self-cleaning function, it can stabilize process of material feeding.



• 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.



• Underwater pelletizing system
  

  The die face of extruder is immersed in water. The plastic pelletizer with special rotating knives cut melts into even pellet immediately as they exit from the die holes. These pellets are being cooled and transported by water to downstream equipment. It is quiet and durable, it can not only be applied to most plastics, but also in different applications, e.g., compounding and coloring.



• 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.



• Storage tank
  

  The storage tank is the important device of the extrusion systems. It is made by stainless steel and has different capacities for choice. Big bag filling machine or bagging machine are also available on requirements.

CYKF has good reputation in PVC extrusion. Our CK-DT Counter-rotating Twin Screw Extruder is especially designed for PVC production; the available screw diameter is between 55 to 130mm. Thanks to our technical team put long term effort on PVC extrusion technology which makes CYKF’s PVC extruder is competitive compared to other competitors. The high-efficient and durable PVC pelletizing machine can produce rigid PVC, soft PVC, medical grade PVC, UPVC, CPVC, and additives of foam or wood powders. It has outstanding performances that has earned highly praises from global customers.

Possible materials :
Especially for high-level medical grade PVC compounding.

How it works :
①Hopper (Force feeder/Dosing feeder) ➜ ②PVC extruder ➜ ③Die face pelletizing system ➜ ④Cyclone tank ➜ ⑤Vibrating cooler ➜ ⑥Storage tank

The mixed materials are delivered by hopper to PVC extruder for extrusion. The vacuum system of the PVC extruder can remove waste gas during production. The melts come out from the die and are cut into pellets by die face pelletizing system. The pellets are transported to cyclone tank by air and then cooled by vibrating cooler before delivering to storage tank.

• Hopper
  

  Force feeder and dosing feeder are available on request. Force feeder can evenly mix powders and effectively avoid bridging during material feeding. It is a standard equipment for producing soft PVC. Dosing feeder can make transportation of materials more stable.



• Extruder screw
  

  CYKF customizes extruder screws for high-level medical grade usage. From steel selection, machining accuracy to quality management, our strict standard procedures ensure superb quality and long service life of the extruder screws.



• Die
  

  CYKF estimates material properties and characteristics for selecting appropriate die material in combination with optimized runner design, that effectively avoids destruction on material properties due to excessive die temperature, uneven material flow rate, material jamming, excessive die pressure, decomposition and carbonization, etc. The die of the PVC extruder is designed with quick clamping in combination with linear guideway, making die open/close and die cleaning easy and fast.



• Die face pelletizing system
  

  The PVC pelletizing machine utilizes a special cutter hub, providing convenient cutter hub dismantling and calibration.



• Cyclone tank
  

  Cyclone tank can separate air and pellets and process initial cooling for pellets.



• Vibrating cooler
  

  Vibrating cooler removes adherent dust and cools plastic pellets evenly and rapidly.



• Storage tank
  

  The storage tank is the important device of extrusion systems. It is made by stainless steel and has different capacities for choice. Big bag filling machine and bagging machine are also available according to customers’ requirements.

CK-HT series Co-rotating Twin Screw Strand Pelletizing Compounding Extrusion Line is especially for composite materials that are suitable for strand pelletizing production method. It can be applied to a wide range of plastics.

Possible materials:
Various composite materials, e.g. PC, PE, PS, ABS, Nylon, LCP, PPS with additives of glass fiber, Wood powder, CaCO3.

How it works :
①Vertical mixer ➜ ②Dosing feeder ➜ ③Extruder ➜ ④Strand pelletizing system (Water tank ➜ Strand dryer ➜ Pelletizing machine) ➜ ⑤Vibrating screening unit ➜ ⑥Storage tank

The mixed materials are stably fed into extruder by dosing feeder. The materials are melted, kneaded, and extruded by plastic extruder. The extruded strands are immediately pulled into water tank for cooling, and then again pulled into strand dryer to remove moisture on pellet surface. Finally, the strands are cut into pellets by pelletizer and stored by storage tank.

• Vertical mixer
  

  The materials are completely, quickly, and evenly mixed by the helix. The stainless steel tank is not easy to leave material retention.



• Dosing feeder
  

  The twin screw dosing feeder operates with the mixer is able to stabilize materials feeding and increase production capacity at the same time.



• 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 tank
  

  Water tank is used to cool plastic strands extruded from die holes.



• Strand dryer
  

  Our strand dryer is divided into two stages. The 1st stage is our vacuum dewatering system that absorbs most of the moisture on the surface of plastic strands, and the 2nd stage is to blow the remaining moisture away from strand surfaces. The powerful motor ensures excellent dewatering performance can be achieved.
  



• Plastic pelletizer
  

  The plastic pelletizer is a very important device for plastic extrusion. The single sided cantilever cutting rotor ensures the vision of working area on the other side of cutter is wide and clear. The operator friendly designs not only make replacement of different cutters easier and safer but also let the adjustment of gap between rotary cutter and the static knife more precise. The daily cleaning and maintenance routine also become simple and quick.
  
  The special design of the rotary cutter is able to bring excellent cutting performance for every kind of plastic. It is quiet and durable, it can not only be applied to most plastics, but also in different applications, e.g., compounding and coloring.
  
  

• 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.



• Storage tank
  

  Storage tank is an important device of extrusion systems. It is made by stainless steel and has different capacities for choice. Big bag filling machine or bagging machine are also available on requirements.

CK-32HT Multi-Function Laboratory Pelletizing Compounding System is especially designed for laboratory purpose. It is suitable for all kinds of plastic experiments and is the best tool for testing in research and academic institution.

Possible materials :
Various filler compounds with plastic materials as CaCO3, Tio2, Talc, Pigment, etc.

How it works :
①Volumetric dosing feeder ➜ ②Plastic extruder ➜ ③Die face pelletizing/Strand pelletizing/Underwater pelletizing system ➜ ④Centrifugal dryer ➜ ⑤Storage tank

The first step is to confirm which pelletizing method is suitable for the plastic materials to be tested. The raw materials are fed into laboratory extruder by passing through volumetric dosing feeder, and then melted, kneaded, pelletized, cooled, dried, and become pellets.

• Volumetric dosing feeder
  

  Materials fed continuously in fixed volume.



• Extruder screw
  

  The extruder screw is the heart of the plastic extruder. It is used for melting, delivering, and kneading plastic materials. The excellent screw design can bring high efficiency, high productivity and high quality of plastic pellets.



• Die face pelletizing system
  

  It is suitbale for the compounding productions with high volume of fillers or plastics that cannot be directly touched with water or have a fast cooling rate. After the melt is extruded from the die, it is directly cut by a rotary cutter, and the pellets are cooled by air at the same time.



• Strand pelletizing system
  

  The melt is extruded into strips from the die and then enter the water tank for cooling. The cooled strips then pass through dewatering unit and pelletizing machine to become plastic pellets. The method is suitable for manufacturing rigid plastics.



• Underwater pelletizing system
  

  The melt is extruded from a die immersed in water and directly cut into pellets by a rotary cutter. The water is to cool and transport pellets. This method is widely used in the production of plastics with high viscosity or low MI value.



• Centrifugal dryer
  

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



• Storage tank
  

  The storage tank is to gather plastic pellets. It is made by stainless steel.

CK-42HT Laboratory Underwater Pelletizing Compounding System is designed for laboratory purpose, especially for experiments on the materials that have low melting temperature and high viscosity.

Possible materials :
TPU, TPE, TPV, TPR, PP, PS,  PLA, PVA, SEBS, EVA, Rubber, Hot-melt adhesive, Special resin, and Micro pellets, etc.

How it works :
①Hopper ➜ ②Loss-in-weight feeder ➜ ③Side feeder ➜ ④Plastic extruder ➜ ⑤Underwater pelletizing system ➜ ⑥Centrifugal dryer ➜ ⑦Storage tank

According to the forms (pellet, powder, liquid) and the added proportion of the materials to determine the materials are fed into the laboratory extruder by passing through loss-in-weight feeder or side feeder. The materials that are inside of the extruder are melted, kneaded, and then cut into pellets by underwater pelletizing system. The cut pellets will be cooled and dried to become usable pellets.

• Loss-in-weight feeder
  

  The loss-in-weight feeder measures the amount of materials that reduced per unit time, and automatically detects and adjusts the feeding tolerance to accurately and stably control the output volume.



• Side feeder
  

  In response to various additives that may be added during experiments, such as powders or pellets. It has a self-cleaning function.



• Extruder screw
  

  The extruder screw is the critical part of the plastic extruder and it can melt, deliver, and knead plastic materials. The design of the screw determines the efficiency, productivity and quality of the extrusion result.



• Underwater pelletizing system
  

  The rotatory cutter cuts the melt extruded from a die. Since the die immerses in water, the cut pellets are cooled and delivered by water at the same time. This production method is suitable for the plastics with high viscosity or low MI value.



• 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.



• Storage tank
  

  The storage tank is to gather plastic pellets. It is made by stainless steel.