Views: 0 Author: Site Editor Publish Time: 2025-11-21 Origin: Site
PET sheet is a clear, durable and versatile thermoplastic material known for its excellent mechanical strength, superior moisture resistance, outstanding abrasion resistance and good chemical resistance. PET sheets are widely used in a variety of applications, including food packaging, electronic component protection, advertising displays, medical packaging and industrial accessories.
Crystallization Dehumidifying and drying system
PET material is extremely hygroscopic. Trace amounts of moisture will be hydrolysed at high temperature extrusion, leading to molecular chain breakage, which will seriously affect the strength, transparency and other key properties of PET products, and cause bubbles, silver grain and other defects in production. Therefore, drying effect must be achieved to avoid material loss.
screw and barrel
As the "core power source" of extrusion equipment, the quality of the screw barrel directly affects the three key aspects of product quality, production efficiency and equipment life. According to the raw materials and formulations, process purposes, production rate and stability of single and twin-screw extruder.
Gear pump + Screen Exchanger
The gear pump is responsible for stabilising the output and controlling accuracy, while the screen exchanger is responsible for filtering impurities to ensure purity. Both work together to ensure high quality and consistency of extruded products.
T-die
The core role of the extrusion die is to form the molten PET extruded by the screw into sheets of predetermined width and thickness in a stable and uniform manner. A high quality, well-designed extrusion die is the basis for ensuring the specification and quality of the final product.With coat-hanger channel, micro-adjustable upper die lip, the die is perfect for single-layer or multi-layer PET(APET、PETG）、PC plate.
Three Roller Calender
Precise calendering and progressive cooling of molten PET is carried out through the gap of three precision temperature-controlled rollers, whose core role is to instantly give the sheet precise thickness, smooth surface and eliminate internal stresses through controlled cooling, ensuring dimensional stability and flatness of the product.
Thickness Measurement Equipment
The thickness measurement equipment employs real-time scanning and data feedback to promptly adjust the mould. This ensures uniformity in product thickness, minimises thickness deviations, and reduces material costs.
Waste edge collection and online shredding
The waste edges generated during the slitting process of PET sheet are automatically conveyed and neatly wound by the take-up device. The waste material is then immediately fed into an in-line shredder, where it is promptly pulverised into recyclable flake-like granules.
Apply silicone oil or anti-static liquid?
1. Subsequent thermoforming processing (e.g., for food packaging boxes or blister packs)?
→ Silicone oil must be applied.
2. Need to package electronic products such as chips and circuit boards?
→ Anti-static treatment is essential.
Winder
The winder is positioned at the end of the production line, where its core function is to smoothly wind the continuous plastic sheet – having undergone cooling, shaping, and traction – into a uniform master roll via constant tension control. By precisely regulating winding tension, it ensures optimal compaction between layers within the roll, effectively preventing material stretching, wrinkling, or slackening. This delivers roll-form semi-finished products that meet process requirements for subsequent storage, transportation, and slitting operations. This stage directly determines the quality consistency of the final roll product and downstream processing efficiency. Our company offers various types of winders for your selection, providing fully customised solutions for your entire production line!
