The plastic extrusion process is one of the most popular machines today throughout the manufacturing and plastic industry. This is because of the many beneficial factors that come with using the plastic extrusion machinery. The main benefit that comes with plastic extrusion is the low cost and high production rate from the machinery, the ability to manufacture high product volumes quickly and inexpensively makes the plastic extrusion machine an essential piece of equipment in the plastic industry.
Finally, another benefit of plastic extrusion is that the extrusion process is very flexible and versatile. This give the manufacturer the capability to create products of all sizes, shapes, texture and thickness allowing a bespoke plastic extrusion manufacturing process, tailoring products to customers specific needs and requirement if needed.
The 5 steps of Plastic Extrusion
1) To begin the process, you’ll need the right materials. Raw plastic resin is placed and fed down into the extruder hopper along with any colourants and additives necessary for the specific plastic extrusion product you are looking to create.
2) Once the raw resin is in place in the extruder hopper, the resin and beads are gravity-fed through the feed throat of the hopper down into the extruder’s barrel. Within the barrel is a long, spinning screw that feeds the resin forward.
3) The resin travels through the barrel on the screw while being heated to extremely high temperatures. These temperatures can range between 400 to 530 degrees Fahrenheit setting the correct melting temperature specific to that type of plastic. By the time it reaches the end of the screw, the plastic is thoroughly mixed as the barrel gradually increases in heat from the loading end to the feed pipe. This gradual increase enables gradual melting therefore to minimize the possibility of plastic degradation.
4) Next the molten plastic is forced through a screen pack and then fed into a feed pipe that leads to the die. The function of the screen pack is to remove any contaminants or inconsistencies that may have appeared in the plastic
5) Finally, once the molten plastic has entered the feed pipe it is fed into the die cavity, where it cools and hardens. The die for an individual plastic profile is designed so that the plastic flows smoothly and evenly from the cylindrical profile of the extruder into the final profile shape.
Plastic Extrusion Products
The Plastic extrusion process is one of the most used process’s for manufacturing & producing a wide range of plastic products on the market today. The plastic extrusion process has therefore been adapted and applied throughout many business sectors & industries from building materials, consumer products to industrial parts. Many common items you wouldn’t even realise are made through the plastic extrusion process these include examples such as Pipes, tubing, window frames, electrical covers, fence, edging, and weather stripping along with thousands of custom & bespoke extrusions builds for a specific industrial application.