All the chemical manufacturing industry, can match with the pipe, film, bar,monofilament, flat, packing tape, squeeze the net, plates, profiles, granulation, and other kinds of plastic molding auxiliary cable coating composed of plastic extruder,extrusion molding production line of all kinds of plastic, the production of variousplastic products.
Nearly twenty years ago, extruder, we know the feeding is usually rely on artificial completed, people are easily aggregate from somewhere into bags or boxes to joinin the hopper extruder. However, with the introduction of automation in plastic processing technology, people can be free from the heavy manual and dust out of environment. Originally done by manual work is now finished automatically byconveying equipment.
The joint efforts of the industry technology, R & D personnel, some special modelssuch as major exhaust extruder, series disc screw extruder, reciprocating pin screw extruder, foaming extrusion machine, belt melt gear pump extruder, series multistep extrusion machine, planetary screw extruder in both domestic manufacturers,capable of independent research and development, and have independent intellectual property rights.
According to the number of screw extruder can be divided into single screw, twin screw and screw extruder. At present in the single screw extruder is most widely used, suitable for extrusion of general material. Twin screw extruder as conveying capacity of shear with the heat generated by friction, less material is more uniform,screw extrusion amount larger, relatively stable, long stay in the material barrel,uniform mixing. SJSZ series conical twin screw extruder with forced extrusion, high quality, wide adaptability, long service life, small shear rate, the material is not easy to decompose, Plasticating good performance, direct powder moldingcharacteristics, automatic temperature control, vacuum exhaust device. Suitable forpipe, plate, profile production.
Both as plasticizing granulation machinery or molding machinery occupies an important position in both the single screw extruder, in recent years, single screw extruder has the very big development. With a single screw extruder granulation atlarge German production, screw diameter up to 700mm, the yield was 36t/h. The main symbol of single screw extrusion machine development lies in the development of its key parts, screw.
In recent years, people have done a lot of theoretical and Experimental Researchon the screw, it has been nearly a hundred kinds of screw, common to haveseparate type, shear type, barrier type, shunt type and wavy type etc..Development from a single screw, although in recent years the single screw extruder is better, but with the polymer materials and plastic product development,also emerged a new screw more features and special single screw extruder.
In the plastic extrusion equipment, machine is usually called a host of plastic extrusion, plastic and subsequent device matched with the extrusion moldingmachine is called auxiliary. Plastic extruder after 100 years of development, has been from single screw originally derived from a twin screw, screw, even withoutscrew and other models.
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