How Is PP Sheet Made? Watch the Full Extrusion Process of PP Sheet Extruder

Welcome to the official channel of Wenzhou Rayshape Machinery Co., Ltd. (AIRAYS). In this video, we will address a key question in the plastic processing industry: How does a PP sheet extruder extrude material? We will break down the working principle of PP sheet extruders in detail, walking you through the complete process from raw material feeding to the output of finished PP sheets.
PP sheet extruders are core equipment for producing PP sheets, which are widely applied in packaging, food containers, medical supplies, industrial liners and other fields. Understanding the working principle of PP sheet extruders is essential for standardized equipment operation, product quality control and production efficiency optimization. In this video, we will take the AIRAYS PP sheet extruder as a demonstration, detailing the key steps of the extrusion process and core technical points.
First, we will introduce the feeding stage: PP raw materials (in pellet or powder form) are uniformly fed into the extruder barrel through the feeding hopper. The feeding system is designed to ensure continuous and stable material supply, laying a solid foundation for smooth subsequent extrusion.

Next, we will explain the melting and conveying stage: the rotating screw pushes the raw materials forward along the barrel. The friction and shearing force generated between the screw and the barrel, combined with the external heating system, gradually heats the PP raw materials, melting them into a uniform molten state. The optimized screw design of AIRAYS PP sheet extruders ensures full melting of raw materials and uniform material conveying, avoiding uneven melting that affects product quality.

Then, we will demonstrate the extrusion and shaping stage: the molten PP material is pushed by the screw through the die head, forming a continuous PP sheet with a preset width and thickness. After extrusion, the sheet enters the cooling system, which includes cooling rolls and circulating water tanks. Through precise temperature control, the sheet is rapidly cooled and shaped, ensuring good flatness, hardness and surface smoothness of the finished product. Finally, the cooled PP sheet is cut to the required length and width by the cutting device, completing the entire extrusion process.
We will also highlight key factors that affect the extrusion effect, including screw speed, temperature control accuracy, die head design and cooling system parameters. Understanding and optimizing these parameters is crucial for improving product quality, reducing raw material waste and enhancing production efficiency. Whether you are a beginner in the plastic processing industry or an experienced practitioner, this video will provide you with professional and practical insights.
AIRAYS has been deeply engaged in the R&D and manufacturing of plastic processing equipment for many years. Our PP sheet extruders are designed with advanced technology, featuring precise temperature control, stable screw operation and high extrusion efficiency, to ensure continuous and stable production of high-quality PP sheets. We adhere to strict quality control standards in every production link, from raw material selection to equipment assembly, to deliver reliable equipment to global customers.
If you have any questions about PP sheet extruders, their working principles, parameter optimization or customized equipment solutions, please feel free to contact our professional technical team. We are committed to providing comprehensive technical support and thoughtful after-sales service, helping you optimize production processes and enhance market competitiveness.
Thank you for watching. For more information about our plastic processing equipment, industry solutions and technical updates, please visit our official website. We look forward to cooperating with you to achieve mutual development.