The Principle of Plastic Extruder Extrusion Molding

        In the process of plastic processing, extrusion molding is also known as extrusion,in non - rubber extrusion machine processing using hydraulic press pressure in the mold itself extrusion weighing pressure. Plastic extruder extrusion molding refers to the material through the role between the extruder barrel and the screw, the side is heat plasticized, the side is pushed forward by the screw, continuous through the head and made into a variety of cross section products or semi-products of a processing method.

        At first, plastic extruder extrusion molding process:

        Material from the hopper into the barrel, under the action of screw rotation, through the inner wall of the barrel and the screw surface friction shear action forward transport to the feeding section, in this loose solid forward transport and compaction; In the compression section, the depth of the screw groove becomes shallow, further compaction, at the same time in the cylinder external heat and the screw and the cylinder wall friction shear effect, the temperature rise began to melt, the end of the compression section; Homogenizing section makes the material uniform, constant temperature, quantitative, constant pressure extrusion melt, molding to the head, after shaping products.

Secondly, extrusion method:

According to the plasticizing method: dry extrusion and wet extrusion

Pressing mode: continuous extrusion and intermittent extrusion

Thirdly, features:

Continuous production, high efficiency, simple operation, wide range of applications