Shibata Satoshi
Drum-Type Screen Mesh — Essential for Resin Filtration in Large Extrusion Machines
Extrusion machines are indispensable in the molding processes of plastics and synthetic resins. In particular, large extrusion machines are widely used for the production of raw materials such as polypropylene (PP) and polyethylene (PE). During these processes, various types of filters known as screen meshes are employed to remove impurities from the raw resin and ensure consistent product quality.
Screen meshes come in a range of types, including flat screens and multi-layered structures, selected according to the application and extrusion conditions. Among these, the drum-type screen mesh is especially well-suited for large extrusion machines, thanks to its high processing capacity and excellent filtration efficiency.
The drum-type screen mesh features a cylindrical mesh structure that effectively removes fine impurities during the resin melting stage. By reliably capturing these impurities, it contributes to the stable supply of high-quality resin materials.
Compared to conventional flat meshes, the drum type offers a larger filtration area and is designed to resist clogging, even during extended continuous operation. It maintains stable filtration performance under high-pressure and high-temperature conditions, making it ideal for the mass production of polypropylene, polyethylene, and other materials.
In the extrusion process, resin materials are fed from the hopper, heated and melted by the screw, then passed through the screen mesh to filter out impurities before being extruded through the die into the desired shape. The drum-type screen mesh plays a vital role in this filtration stage by ensuring consistent flow, enhancing resin quality, and supporting the stable production of molded products.
The mesh opening size, material, and drum dimensions can be optimized based on the type of resin and specific application, with customization available to suit various extrusion conditions.
In summary, the drum-type screen mesh is a key technology that enables the stable supply of polypropylene, polyethylene, and other resin raw materials, while also enhancing production efficiency in large extrusion machines. If you are considering optimizing the screen mesh in your extrusion process, we invite you to consult with Taiyo Wire Cloth.