The plastic pelletizing machine is the most important equipment in the plastic granulation line. The dehydrated plastic fragments enter the main machine of the granulator for heating and melting, and the melted plastic is extruded and drawn through the die head in the auxiliary machine to achieve granulation.
With a special screw design and different configurations, it is suitable for the production of PP, PE, PS, ABS, PVC, PC, and other plastics for regeneration and color-mixing granulation.
Introduction of Plastic Pelletizing Machine
The Plastic pelletizing machine consists of a main machine and a secondary machine. The main machine of the plastic pelletizing machine is the extruder, which consists of an extrusion system, transmission system, and heating and cooling system.
1, Extrusion system: The extrusion system includes screws, barrels, hoppers, heads, and mold heads. Plastic is plasticized into a uniform melt through the extrusion system and is continuously extruded by the screw head under the established pressure during this process.
2, Transmission system: The role of the transmission system is to drive the screw and supply the rotational speed required by the screw in the extrusion process, usually consisting of a motor, reducer, bearings, etc.
3, Heating and cooling device: Heating and cooling are necessary conditions for the plastic extrusion process to proceed.
Raw Materials of Extruder Machine Plastic
Our extruder machine plastic has a wide range of applications and is suitable for strand-pelletizing plastic bags, woven bags, cement bags, raffia grass, industrial films, agricultural films, plastic drums, tubes, electrical appliance shells, and so on.
Structure of the Plastic Granulator
This plastic granulator is mainly composed of a feeding port, screw press, reducer, heating device, press chamber, discharge port, mold head, machine body, base, motor, and other parts.
Two-stage tandem exhaust granulation unit is widely used in the recycling and granulation of various types of plastics such as LDPE, HDPE, and PP. The specially designed exhaust port can effectively remove the moisture and volatile gas generated during the melting process of the material, and the extruded particles are uniform, beautiful, and transparent, and the production efficiency is high. The main engine adapts to high-speed continuous operation.
Extruder Machine Plastic Show Video
Heating Method of Plastic Granulator
The heating methods of plastic pelletizing machines include electromagnetic heating, ceramic heating, quartz tube heating, and ordinary electric heating. Among them, electromagnetic heating has the best effect.
The plastic pelletizing machine developed by Shuliy Machinery adopts the new technology of a high-frequency electromagnetic heater, which is energy-saving and efficient, accurate temperature control, safe, and reliable.
Electromagnetic heating: The outer wall of the material drum is wound with electromagnetic coils, with high power, internal heating, and an external insulation layer. Preheating time 10-15 minutes, energy saving 30-70% or more, long service life.
Ceramic heating: The outer layer has a decorative steel plate, and the nichrome alloy heating wire is sandwiched between the ceramics, which must be close to the sleeve. The power is 0.5~1.5 times higher than the ordinary one, the preheating time is 30-60 minutes, and the service life is slightly better.
The mica heating ring is composed of high-quality nickel-chromium alloy heating wire as the heating element, using natural mica as the insulation layer, and the inner layer is made of galvanized/aluminum plate as the conductive heating layer. Moderate power, internal and external heat dissipation.
Mold Head of PP PE Granule Extruder
The die heads of the plastic pelletizing machine are hydraulic die heads, electric gear die heads and meshless slagging die heads. The die head, also called the extrusion die head, is the molding part of the plastic granulator. Its function is to distribute the plastic melt from the barrel of the extruder well in the die head runner so that it can be extruded and molded from the die mouth at a uniform speed. The forming role of the extrusion die head is critical in the total extrusion process.
- Electric gear die head: An electric gear die head is a common plastic pelletizing machine die head, that is relatively simple and easy to operate and maintain. Suitable for small-scale plastic particle production, electric gear die heads have lower equipment costs compared to some more complex die heads.
- Hydraulic die head: Hydraulic die heads can achieve more precise extrusion control and are suitable for large-scale particle production. The hydraulic system can provide a more stable extrusion process, helping to maintain consistent particle mass.
- Meshless slagging die head: The meshless slagging die head can effectively remove foreign objects and impurities during the plastic granulation process, improving particle quality. No need to shut down or change the network, improving production efficiency.
Video: How Does the Plastic Pelletizing Machine Work?
Precautions of Plastic Pelletizing Machine
1, It is prohibited to start the PP PE granule extruder cold. Pre-heating is required before starting, and the temperature of each zone of the barrel and head should be set to a predetermined value to ensure sufficient material melting time, to ensure that residual materials in the barrel and head melt, as well as internal parts such as screws and splitter plates reach the set temperature.
2, Ensure that the materials added to the mixing feeder do not contain any destructive impurities, especially heavy metals.
3, Wear protective gloves when cleaning the mold opening and changing the stencil.
4, No tools or objects in your hands should be near any rotating parts at any time, and no hands or tools in your hands should be in the hopper of the feeding device at any time when the equipment is running.
How to Maintain PP PE Granule Extruder？
- Clean and lubricate regularly: Clean the external surface, the feed inlet, discharge outlet, and lubricate moving parts.
- Regular inspection and repairs of plastic pelletizing machine: Checking electrical components, inspecting the transmission system, and maintaining the heating system.
- Paying attention to safety production: Training operators, and keeping detailed maintenance records.
What Factors Affect the Price of Plastic Pelletizing Machines?
- Models and specifications: Different models and specifications of the PP PE granule extruder have different processing capacities and functions, and the price will vary accordingly.
- Brands and manufacturers: Well-known brands and specialized manufacturers usually provide more reliable equipment and after-sales service, but their prices may be relatively high.
- Materials and workmanship: The materials and workmanship used in the manufacture of a PP PE granule extruder will affect its durability and performance. High-quality materials and workmanship usually increase the price.
- Degree of automation: The plastic granulator with more automation is usually more expensive. Automation features can increase productivity, but they can also increase the cost of the equipment.
Successful Cases of Plastic Granulator
HDPE Pelletizing Machine Applied in Nigeria
Our Nigerian customer bought an HDPE pelletizing machine from Shuliy Machinery, and this machine has been successfully installed and applied.
Shuliy Plastics Granulator Running in Mozambique
The plastics granulator shipped to Mozambique is running well and the customer is very happy with our machine, sharing a video of the machine in operation with Shuliy Group.
Choose One Complete Plastic Recycling Line
The PP PE granule extruder is used to melt plastic fragments and extrude them into strips. The plastic pelletizing machine is the core equipment in the plastic granulation line, and Shuliy Machinery can provide our customers with complete plastic recycling production line equipment.
The important equipment of the plastic recycling line includes a plastic crusher, rinsing tank, plastic granulator, cooling tank, and pellet cutting machine. We can also provide customized granulation lines according to customer needs.
