Italy Screw and cylinder for rubber processing machine
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Product Description
A screw and cylinder form the core processing unit in extrusion and injection molding machines, responsible for the controlled melting, mixing, and conveying of polymer materials. The screw rotates inside the heated cylinder, generating shear and pressure that gradually transform solid pellets into a uniform molten state. The design of the screw—its pitch, compression ratio, and flight geometry—directly affects melting efficiency and material flow stability. The cylinder, typically made from wear-resistant alloy steel or bimetallic materials, ensures precise temperature control and maintains structural strength under high pressure and abrasion. Together, the screw and cylinder determine output consistency, product quality, and overall processing reliability in modern plastics manufacturing.