What You Need to Know About Plastic Extrusion
With plastic being used in every industry and increased demand for such parts, plastic extrusion has turned into one the most popular and well-known procedures. This is one of the common terms used in the industry but most of us are not aware that what plastic extrusion exactly is. If you want to know what it is and why it is used this article is meant just for you.
In this article, we will answer all the questions that can come in your mind when we talk about plastic extrusion.
So, let’s start with what is plastic extrusion?
Plastic extrusion is the procedure of manufacturing raw plastic materials and it is one of the most popular and common methods used by plastic industries. It is majorly used for the large volume of production. It is done by heating new or old plastic. Proper and shape is given to the plastic with this process.
What is made using plastic extrusion?
It is used in making of plastic products like piping, tubes, deck railings, fencing, films and sheets. ABS, rigid and flexible PVC elastomers, and nylons can be used for plastic extrusion. The products can be rigid, semi-rigid, and completely flexible and they can also have any number of other qualities. Everything will depend on the quality of the material used.
What materials can be used for plastic extrusion?
Plastic extrusion can be done with a wide variety of materials, including nylon, ABS, rigid and flexible PVC and many more materials can be sued.
What is the process of plastic extrusion?
Colour pigments along with the other performance and enhancing additive are combined with resin which is pushed through the rotating screws. Then the heat generated within the barrels is dispersed to melt the plastic elements. This produces a homogenous mixture of melted plastic. A cold die is placed at the end of the mixture. Once the mixture passes through the dye it is ready or the final operation that will include palletising calendaring or other processes.
What are different types of extrusion process?
The different types of plastic extrusion process are mentioned below:
- Sheet or film extrusion: Thin and flat sheets or films can be made using this method. The raw material used here is mostly polystyrene.
- Blown film extrusion: It is majorly used to make plastic bags that can be up to 300 centimetres material used under this process is polyurethane.
- Co-extrusion: If you want to make multiple layer materials simultaneously then this process is used. The thickness of the layer is controlled by the speed and the size of the extruders that are delivering the materials.
- Extrusion coating: It is used to make roll stock of paper, foil or film and it also adds an additional layer to it. It is helpful in making water-resistant products.
What are the various advantages of plastic extrusion?
- High speed
- Low production cost
- The high volume of production
- Minimal wastage
- Can produce complex shapes, thickness, size, textures and colours
- Sophisticated machinery
- Continuous production
- No use of harmful chemicals
- Various additives can improve the quality of the product.
- Fire resistant, chemical resistant, abrasion resistant and water-resistant products can be made.
- Tooling and machinery of extrusion are cheap.
- Durable and long-lasting products are achieved.
- Co-extrusion is also possible.
Are there any disadvantages of plastic extrusion?
There is one small disadvantage that highly complicated parts can’t be produced using this method.
Therefore, before you go ahead with your plastic extrusion procedure, you need to understand all these things. Based on all these things you can make a decision and get your things done.