Plastic extrusion machine, foam machine, double helix single screw plastic extruder how to choose and buy?

In plastics extrusion molding equipment, plastic extrusion machine is usually referred to as the host, and subsequent equipment with matching plastic extrusion molding machine is referred to as the auxiliary. Plastic extruder after 100 years of development, has been developed from the original single screw derived double screw, screw, even without the screw, and other models. Plastic extruder (host) and pipes, films, with material, monofilament, flat wire, packing tape, squeeze net, plate (sheet material), special-shaped material, granulation, such as cable coated all kinds of plastic molding auxiliary machinery, all kinds of plastic extrusion molding production lines, production of various plastic products. Therefore, plastic extrusion machinery for no matter now or in the future, are widely used in plastic processing industry of one of the models.

The composition of plastic extruding machine:

Plastic extruding machine's host is molding machine, it is composed of extrusion system, transmission system and heating cooling system.

Plastic extrusion machine categories:

Plastic extrusion machine according to the number of screw can be divided into single screw extruder, twin screw extruder and screw extruder. Currently most widely application in a single screw extruder, is suitable for general material extrusion processing. Twin screw extruder with less heat produced by friction, material by shear was homogeneous, the screw of large conveying capacity, the quantity is stable, materials in the barrel to stay long, mixed evenly.

Single screw extruder as plasticizing granulation machinery or forming machine occupies an important position, industry in recent years, single screw extruder has made great development.

Twin-screw extruder feeding feature is good, suitable for powder processing, and better than single screw extruder with mixing, exhaust, reaction and self-cleaning function, the features of poor processing thermal stability of plastic and more shows its superiority when blending. On the basis of the twin screw extruder, in order to more easily processing thermal stability blend material, has now developed more screw extruder, such as guanghua plastic extruding machine, etc.

Extruder molding principle

Generally refers to the plastic extruder extrusion method is under the high temperature of 200 degrees to make plastic melt, melt the plastic by the shape of the mould formed when needed. Extrusion molding requires a deep understanding on characteristics of plastic and mold design experience, is a kind of technical requirements higher molding method.

Extrusion is passed in extruder to heat, pressure and make the material to flow state continuous forming method through the mouth, also known as the "extrusion". Compared with other molding method, possesses the advantages of high efficiency, low cost per unit.

Extrusion method is mainly used for thermoplastic plastic molding, can also be used for some thermosetting plastic. Products are continuous profiles extrusion, such as tube, rod, wire, plate, thin film, wire and cable coating layer, etc. In addition, can also be used for plastic mixing and plasticizing granulation, shading, blending, etc.

Extrusion products can be known as the "profile", most because of the cross section shape is irregular, so also known as "abnormal".

Foam extruder is a kind of plastic extrusion machine, foam extruder mainly adopts double drum after cutting blade, the material after broken into smaller patches, after crushing cavity of screen mesh, host hopper is finally fall into again after a high-speed rotating screw, will have the broken material to screw, a screw inside temperature and export to model, according to the customer demand, the hydraulic cutting system material cutting into the ideal.