Zhoushan Tianxiang Screw Manufacturing Factory is a famous China Extrusion Screws Barrels Manufacturers,we are specializes in manufacturing all kinds of extrusion and injection molding rubber and plastic parts screw and barrel and product forming head accessories. It always takes: “Product quality as the center, and pay attention to partners and customers.” The purpose is to do a good job for each customer.

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The difference between plastic extruder and injection molding machine

Extruder and injection molding machine are both plastic processing machinery. They sound a little similar, but they are actually different. There are many differences between plastic extruder and injection molding machine. The professional of plastic extruder will introduce them to you to learn more about the two machines.
1. The extruder is to extrude the molten plastic through the fixed shaped extrusion port under the action of screw, and then cut it after water cooling and shaping under the action of tractor. It is mainly used for mass continuous production of all kinds of products with the same cross section, such as pipes, rods, profiles, etc. it can also be used for plastic modified granulation. Its plastic processing is called extrusion molding process.
2. Injection molding machine is to inject molten plastic into the mold, and the product will be produced after cooling. It has a wide range of uses. According to the different plastics, it is used in different places. This process is called injection molding process.
In our image description, the injection molding machine melts the plastic particles and then injects them into the closed mold cavity. After the mold cavity is filled, the injection molding machine stops working first, shapes the plastic into a certain shape through cooling, and then works again after opening the mold. Such as plastic cup, plastic basin and other plastic products. The extruder is through the melting of plastic particles, continuous extrusion through the mold, such as plastic pipe, plastic plate, and then cut off in the subsequent process. The two machines not only process different materials, but also have different screw structures.
The processing materials are also different, the viscosity of the material is not the same. Injection molding requires that the plastic raw materials can flow in the mold, and the flow channel is generally curved and narrow, so the fluidity of the plastic raw materials should be absolutely good.