In the process of producing PET preforms, drying PET raw materials is an essential link. In the production of PET preforms, PET raw materials are heated and pressurized, extruded by an extruder into plastic blanks, and then further processed into preforms. However, if the PET raw material contains too much water, it will decompose during the heating and pressurizing process, resulting in a decrease in the physical properties of the blank, or even complete failure, affecting the quality of the preform, and may even cause the entire production line to fail. Therefore, drying PET raw materials is very necessary. Under normal circumstances, it takes a long time from the production and processing of PET raw materials to the delivery of final products, and PET raw materials may be exposed to high humidity environments, thereby absorbing a large amount of water. This affects not only the properties of the PET raw material, but also the quality and durability of the final product. For this reason, it is very important to dry the PET raw material. The drying process of PET raw material is also critical. Generally speaking, drying PET raw materials requires the use of dehumidification dryers. This kind of dryer can expose the PET raw material to a low humidity environment, and gradually evaporate the moisture in the PET raw material through large-area heating, so that the PET raw material can reach the required dryness. In the process of drying PET raw materials, it should be noted that appropriate temperature and time must be used to ensure the drying effect, and at the same time, it should not be over-dried, otherwise it may have a negative impact on the physical properties of PET raw materials. In short, drying PET raw materials is a very important job. The quality and performance of PET preforms can only be guaranteed if the drying is thorough enough. At the same time, the process of drying PET raw materials also needs to follow the correct method, not only to pay attention to the control of temperature and time, but also to avoid over-drying to ensure the physical properties of PET raw materials. Drying PET raw materials can improve production efficiency and product quality, and reduce production costs, so it is also an indispensable part of the preform production process.
Post time: Jul-12-2023