Production process of PET sheet

Release time: 2022-08-26

At present, PET sheet is widely used in the market and has many kinds. Due to its good performance, it can be used to manufacture various packaging materials, handicrafts or display materials. When manufacturing PET sheet, raw materials and production process are the main factors that determine the quality of PET sheet. Today, let's talk about the production process of PET sheet.

First of all, before producing pet sheets, we need to slice the raw materials through a crystallization tower and then heat them for crystallization. This step is to make the molecules orderly arranged, and then further increase the temperature for drying. The main reason for drying is that under high temperature, water will degrade the PET sheet, reducing its adhesiveness, and the impact strength will also decrease with the decrease of molecular weight. If the raw material is not dried well, the physical properties of the PET sheet will become worse. Next, it can be extruded. After crystallization and drying, pet will be transformed into a high polymer with obvious melting point. It can be extruded into the required shape and thickness through the extruder to ensure flatness. Then, it can be cooled and shaped. During the characterization, the three roller calender needs to keep the head distance at about 8cm to prevent affecting the smoothness of the PET sheet. After that, the PET sheet can be obtained by pulling and winding.

When purchasing pet sheets, we need to choose more reliable manufacturers to ensure that the production process meets the standards. If you have any questions about pet sheets, please feel free to contact us. We will solve the problems and provide good solutions for you in time!

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