Views: 2 Author: Site Editor Publish Time: 2022-06-04 Origin: Site
Degradable plastic is a kind of plastic whose various properties of its products can meet the requirements of use, the properties remain unchanged during the storage period, and can be degraded into environmentally harmless substances under natural conditions after use. Therefore, the biodegradable plastic extruder has been warmly welcomed for the production of degradable plastics.
What is the role of the transfer part of the biodegradable plastic extruder?
What does the barrel of the biodegradable plastic extruder look like?
How to determine whether the screw speed of biodegradable plastic extruder is fast or slow
The transmission part of the biodegradable plastic extruder usually consists of a motor, a reduction box and a bearing. In the process of extrusion, the screw speed must be stable and cannot change with the change of screw load, so as to keep the quality of the obtained products uniform. However, on different occasions, the screw is required to be variable speed, so as to achieve the requirement that one equipment can extrude different plastics or different products. Therefore, this part generally adopts AC commutator motor, DC motor and other devices to achieve stepless speed change, and the general screw speed is 10~100 rpm.
The barrel of the biodegradable plastic extruder is generally a metal barrel, which is made of alloy steel or a composite steel pipe lined with alloy steel. Its basic features are high temperature and pressure resistance, strong wear resistance and corrosion resistance. Generally, the length of the barrel is 15 to 30 times its diameter, and its length is based on the principle that the material is fully heated and plasticized evenly. The barrel should have sufficient thickness and stiffness. The interior should be smooth, but some barrels have various grooves carved to increase friction with the plastic. There are electric heaters, temperature automatic control devices and cooling systems heated by resistance, inductance and other methods outside the barrel.
It depends on your product quality, output and maximum RPM for machine design.
1. The higher the rotational speed of the biodegradable plastic extruder, the stronger the shearing. If the material is shear-sensitive, such as PVC, the screw speed cannot be fast, and it will degrade if it is too fast, which can be seen from the quality of the product.
2. The higher the rotational speed of the biodegradable plastic extruder, the higher the output. It depends on whether your output meets the requirements. If the product quality allows, providing the rotational speed as much as possible will help to increase the output and improve the economic benefits.
3. The machine design of biodegradable plastic extruder will consider the formula you provide. For example, the PVC mentioned above will be designed with a lower maximum speed than other machines, so that the power of the motor can be fully utilized. Therefore, under normal circumstances, it is reasonable to drive to 80% to 90% of the maximum speed during continuous production.
Nanjing Haisi is a biodegradable plastic extruder manufacturer established for more than several years. We work with customers from design to completion to ensure that all technical requirements are met.
