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Co-rotating twin-screw extruder is a kind of extrusion processing equipment widely used in plastics, rubber, food, medicine and other industries. Compared with single screw extruder, twin-screw extruder has higher production efficiency and better product quality. Co-rotating twin-screw extruders, also known as intermeshing co-rotating parallel twin-screw extruders, are one of the main types of twin-screw extruders.
The meshing co-rotating twin-screw extruder has the advantages of high conveying efficiency, strong mixing ability, good self-cleaning performance, uniform distribution of material residence time in the machine and good adaptability. It is widely used between different kinds of plastics, plastics and compounding modification between rubbers, blending of various additives with plastics, glass fiber, carbon fiber reinforced plastics, etc., It is the first choice for continuous mixing, filler, masterbatch equipment for polymer modification.
The co-rotating twin-screw extruder is composed of driving system, feeding system, extrusion system, heating and cooling system and control system.
Driving system: motor, reduction gearbox and thrust bearing
Feeding system: hopper, feeder and feeder driver
Extrusion system: barrel, screw, core and die head (including screen changer, etc.)
Heating and cooling system: There are heater and liquid cooling channels inside the barrel
Control system: automatically controls the start and stop of the entire extrusion unit
The functions of each part are similar to single-screw extruder, but the structure is much more complex than then single-screw extruder.
The most notable feature of the co-rotating twin-screw extruder is that both the screw and barrel is adopted a "building block" design. The screw is composed of several screw elements mounted on the madrel, such as screw components, kneading blocks, toothed mixing discs, baffle rings, etc.; The barrel is also composed of different barrel sections (fully closed, with degassing part, with feeding part).
According to the specific materials, formulas and performance requirements of the mixture to be prepared, different types and numbers of screw elements and barrel elements are combined in a certain order through scientific combination to efficiently complete the set mixing tasks. And by changing the combination sequence of screw and barrel, the best use effect of different materials and formulas can be achieved, so as to achieve the purpose of one machine with multiple uses and one machine with multiple functions.
In addition, another advantage of the building block design is that worn thread elements and barrel elements can be partially replaced, avoiding the scrapping of the entire screw or barrel and greatly reducing maintenance costs.
Twin-screw extruder is consist of two rotating screw and passing through the barrle to mix,melt,pressurize and extrude the plastic evenly.
Plastic processing industry. Twin-screw extruder can be used to produce all kinds of plastic product,such as pipes,plates,films,bags,barrels,etc.mainly used in filling, modification, blending and other fields.
Rubber processing industry. Twin-screw extruder can be used to produce rubber cables, tires, seals, pipes, etc.
Food processing industry. Twin-screw extruder can be used to produce chocolate, cheese, dough, patties and so on.
Pharmaceutical industry. Twin-screw extruder can be used to produce medical pipe, infusion pipe, rubber wire and other medical products.
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JORBIN MACHINER, we promise to supply high quality machine with high competitive prices.
Expecting cooperation with you, Let us become friendly partners, common development!
