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Pelletizing Machine

Description of automatic plastic pelletizing machine

The plastic pelletizing machine also known as plastic granulator, is mainly used for processing industrial and agricultural waste plastics. With special screw design and different configurations, plastic pelletizing machine models include single-screw plastic granulator, conical twin-screw plastic granulators, parallel twin-screw granulators. The plastic pelletizing machine is suitable for most common waste plastics range from PP, PE, PS, ABS, PA, PVC, PC, POM, EVA, LCP, PET, PMMA and other plastic regeneration and color mixing granulation. Recycled pellets can be reused again to make new plastic products. As the most widely used and most popular plastic recycling machine in the waste plastic recycling industry, granule-making machines can both create significant economic benefits and optimize resource allocation to protect the environment.


Composition of plastic pelletizing equipment

The main engine of the plastic granulator is an extruder, which consists of an extrusion system, a transmission system and a heating and cooling system. The auxiliary machines of the plastic pelletizing machine unit mainly include pay-off device, straightening device, preheating device, cooling device, traction device, meter counter, spark tester, and wire take-up device.

The main sections of whole plastic pelletizing equipment involve Belt conveyor with metal detector/Force feeder/Compactor/Main extruder with degassing/Second extruder/Hydraulic screen changer/Die face cutting system/Water cooling tank/Dewatering machine/Vibrator screen/Packaing system.

The extrusion system includes a hopper and a die, and the plastic is plasticized into a uniform melt through the extrusion system.

The transmission system is used to drive the screw. The torque and speed required for the screw supply during the extrusion process generally consists of a motor, a reducer and a bearing.

Heating and cooling systm is necessary conditions for the plastic extrusion process to proceed. The heating device heats the plastic in the cylinder externally to heat it up to the temperature required for the process operation. The cooling device is set up to ensure that the plastic is in the temperature range required by the process

Working principle of automatic plastic recycling granulator machine

The physical properties of plastics are changed by high temperature melting, plasticizing and extrusion to achieve plasticizing and molding of plastics.

Working flow of plastic recycling pelletizing machine

Plastic sorting→crushing→cleaning→rinsing→drying→granulation→wire drawing→dicing→packaging

1. Automatic feeding according to customer requirements.

2. In the patented crushing/cutting compaction chamber, the plastic material is cut, mixed, heated, dried, densified and buffered by rotating rapidly blades.

3. The tangentially connected extruders are filled continuously.

4. In the extruder screw, the plastic material is extruded.

5. In the degassing zone: air and water etc. are volatile.

6. The plastic material is extruded to a die and pelletizer.

Main advantages of plastic pelletizing machine

  • Except for thermosetting plastics, all thermoplastics can be produced whether dry or wet. From raw material cleaning, crushing, feeding to making pellets are all automated.
  • Equipped with a stainless steel constant temperature system, and the heat preservation effect is good. Less consumption, low cost and high profit. High wear resistance, corrosion resistance and long service life.
  • The thickness of the material is uniform, the color is good, the quality of the recycled particles is high, and it can be used to color various products.

Cutting types for plastic recycling pelletizing systems

  • Hot Die Face Pelletizing System

  • Hot Die Water-ring Pelletizing / Underwater Pelletizing System (UWP)
  • Strand Pelletizing System

  • Automatic Strand Pelletizing System

Feeding type of pelletizing machine for plastic recycling

1. Hopper Feeding Recycling Pelletizer

Side feeding is a stable, continuous feeding method. Overloads and underloads are avoided, thus guaranteeing maximum efficiency.

2. Side Feeding Recycling Pelletizer

Hopper feeding is a flexible feeding method, without preheating, both soft and hard plastics can be processed

Plastic pelletizing machine for Sale

Application of plastic granulator machine

There are different types of plastic waste in the world, as the plastic materials various, we support all the applications

  • Rigid plastic waste - HDPE rigid, pp pipes, ABS PS flakes, EPS EPE XPS plastic foam cold press flakes, hot melting flakes
  • Soft plastic waste - LDPE agriculture film, LLDPE rolling stretch packaging film, HDPE offcut bag, BOPP CPP OPP POF film, PS XPS foam, PP woven/non-woven bag, fiber materials

Types of plastic granulating line

Crushing material two-stage pelletizing line

This plastic granulator is used for granulating various plastics, mainly for ABS PP PS PP-R PET ABS+PC POM and other plastic granulation.

Two-stage film material granulating line

Mainly used for granulation of plastic films such as HDPE LDPE PP after washing with water.

Nylon waste silk and cloth pieces granulating line

The plastic granulator is used for granulating nylon airbag cloth, waste silk and other plasti

Plastic pelletizing/granulator machine manufacturer 

As a reliable manufacturer of plastic recycling machine with over 15 years experience, Retech Machine constantly discuss and track services with customers, improve and perfect professional technology. Our plastic pelletizing/granulator machines, plastic washing machines and more have been exported to more than 60 countries and regions, we have won unanimous praise from customers. Accordfing to different materials properties, we support custom plastic recycling pelletizing/granulator solutions.


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