Plastic extruder is the core and basic part of all kinds of plastic machinery. There are many different kinds of plastic extruders such as single screw extruder, twin screw extruder, multi-screw extruder. Plastic extruder machine is used for plastic pipe extrusion, plastic profile extrusion, plastic sheet board extrusion, plastic injection, plastic granulating.....
What is Plastic Extrusion?
To put it simply, plastic extrusion is a "high-volume manufacturing process" in which raw plastic is melted and formed into a continuous profile. Plastic extrusion machinery is useful for speeding up workflow and volume. It's great for ensuring consistency products.
How Does the Extrusion Process Work?
Extrusion process—raw plastic materials go in, extrusion product comes out, calibrate, cool then cut to size. Below are components of extruders:
· Screw Design
As material gets fed into one end of the plastic extruder (a hopper), it is gradually melted by the heat and energy created from turning screws. These screws are located along the barrel of the machine where the raw materials are melted down. Most types of screws have three different zones to move along the extrusion process:
- Feeding Zone: This is where plastic composite material gets fed into the extrusion machine.
- Melting Zone: The next section in the screw design is where the plastic gets melted.
- Metering Zone: Finally, the metering zone is where the last bits of plastic are melted and mixed to create a uniform temperature and composition.
· Temperature Control
To ensure that the final materials won’t degrade or become weakened, it’s essential to maintain a consistent temperature inside extruder’s barrel. Overheating the materials should be avoided to reduce imperfections, so typically the barrel is heated gradually from rear to front. The temperature is also maintained using a series of fan and water cooling systems before your product is extruded into a die mold.
Our company has rich experience in the plastic machinery making industry. Our main products include plastic extrusion machine,plastic recycling machine, plastic pelletizing machine and so on. Our products are with CE and SGS certification. Welcome your inquiry!
Post time: Dec-05-2022