Blended extruders are mainly used to mix two or more plastic materials with different properties evenly and extrude them into shapes, which are widely used in the field of plastic processing. By heating, melting, mixing, extrusion and other process steps, different properties of plastic raw materials are mixed evenly, and then molded into the desired product through molds.
A blending extruder is a key equipment used in plastic processing, whose core function is to mix two or more plastic materials with different properties evenly and extrude them into shapes. It is widely used in the production of plastic products, plastic blends, and multi-layer structured plastic products.
working principle
Heating and melting: Different properties of plastic materials are added to the hopper of the blending extruder, and the plastic is heated by the heating system to melt into a flowable melt.
Mixing plasticization: Molten plastic is mixed with other additives (such as pigments, stabilizers, etc.) under the action of an extrusion screw to form a uniform plastic mixture. The blending extruder uses special mixing elements such as mixing screws and pins to shear, knead, and stretch the material, ensuring uniform mixing in both radial and axial directions.
Extrusion molding: Uniformly mixed plastic is extruded through a mold under the action of an extrusion screw. The mold determines the cross-sectional shape and size of the product. Through the shape and holes of the mold, the molten plastic forms the desired cross-sectional shape and is molded into a continuous plastic product.
Cooling solidification: The extruded plastic product is rapidly cooled by a cooling system to solidify and stabilize in a short period of time, maintaining the desired shape and size.
Application field
Production of plastic products: such as doors and windows, toolboxes, car fuel tanks, sunroof rails, etc.
Preparation of plastic blends: Mix two or more plastic materials with different properties evenly to prepare plastic blends with specific properties.
Production of multi-layer structured plastic products: Through melt co extrusion technology, products with multi-layer structures are produced, suitable for complex products that require multi-layer structures.