Extrusion molding is one of the most commonly used molding methods in the processing of plastic products. It is using the extruder screw to rotate the pressure or the plunger pressure, forcing the plastic molding material through the specific shape of the mold to become the shape of the mold and the shape of a continuous profile of a processing method. The extrusion method is suitable for almost all thermoplastic plastics and some thermosetting plastics, which occupies an important position in plastic molding processing.
It is also called extrusion molding mold, because the shape of plastic products can be squeezed out of the section shape, according to different products requirements, in the production need to design different nose. Classification according to the export direction of products
In general, there are several classification methods as follows:
1、Classification according to the export direction of products.
The extrusion direction of the plastic products from the head of the machine is different, which can be divided into the straight through head and the angle machine head. For example, a straight through head is often used to squeeze out a hard pipe, and a right angle head is often used when extruding a wire and cable with a plastic coating.
2、Small classification of pressure in the nose
It can be divided into low-pressure nose, medium-pressure nose and high pressure nose, according to the pressure of the plastic melt under the nose.
3、Classify according to product shape
There are usually plastic tubes, plastic bars, plastic films, plastic sheets, plastic materials, metal coating, cable cladding, hollow products, monofilament, profiled section profiles and other different shapes. They were using the head pipe die, bar extrusion die, blow film head, wire and cable, such as spinning monofilament extrusion die head.
Post time: Mar-29-2018