Shibata Satoshi
Framed screen mesh is an extrusion screen mesh in which a screen pack, composed of multiple layers of wire mesh, is fixed with a metal frame. In resin extrusion molding, resin materials such as polypropylene and polyester are heated and melted, then continuously extruded through a die to form products such as films, sheets, tubes, and pellets. In this process, removing unmelted resin, carbonized material, gel-like contaminants, and other foreign particles from the molten resin is essential for maintaining the quality of the final product.
Multi-layer screen mesh enables step-by-step filtration by combining coarse and fine mesh layers. For example, larger contaminants can be captured by a coarse mesh, while fine contaminants and gel-like substances can be filtered by a finer mesh. This helps maintain stable filtration performance while reducing clogging. In addition, layering multiple meshes can improve not only filtration accuracy, but also the overall strength and pressure resistance of the screen.
Furthermore, by fixing the outer edge of the screen with a frame, fraying at the edges can be reduced, while leakage from the edges can also be prevented. This allows stable use even under high-pressure conditions. In particular, for extruders equipped with screen changers, ease of handling during replacement and stability during installation are important. A framed structure helps maintain the shape of the screen pack and can also improve the efficiency of replacement work.
Various shapes, such as round, square, oval, and ring-shaped types, can be manufactured according to the specifications of the extruder or screen changer. It is important to select the appropriate mesh material, wire diameter, opening size, number of layers, and frame shape according to the type of resin used, extrusion conditions, filtration accuracy, and pressure conditions. Based on its extensive knowledge and experience in wire mesh manufacturing, Taiyo Wire Cloth Co., Ltd. provides framed screen mesh solutions suitable for each customer’s resin extrusion molding process.