Plastic extruder Nylon tropical extruder PE telescopic tube plastic extruder equipment
Product Description
Briefly describe the plastic extruder:
Plastic extruder is an important mechanical equipment in plastic processing industry.
It is mainly composed of a feeding device, a screw, a barrel, a head and a die. When working, the plastic raw materials are added from the feeding port, and under the rotation of the screw, the plastic is gradually heated, melted and mixed evenly in the barrel, and then extruded into plastic products with a specific shape through the head and mouth die, such as pipes, plates, films, cable sheathing and so on.
Plastic extruder has the advantages of high production efficiency, continuous production, product size stability, etc., has a wide range of applications in the field of plastic processing, and has played an important role in promoting the development of the plastics industry.
The working principle is to drive the screw to rotate through the driving device, so that the plastic raw materials are gradually melted and plasticized in the barrel, and continue to pass the head and mouth die under the push of the screw, and finally extrusion molding into the required plastic products.
Plastic extruder has the following characteristics and advantages:
• High production efficiency: continuous production can be achieved.
• Strong adaptability: can process a variety of plastic materials.
• Stable product quality: ensure the consistency of product size and performance.
It is widely used in many fields, such as:
• Production of plastic products: such as various pipes, plates, films, profiled profiles, etc.
• Wire and cable manufacturing: used to extrude cable sheathing, etc.
In short, plastic extruders occupy an important position in the modern plastics industry, providing strong technical support for the production of various plastic products.
Nylon heat insulation strip extrusion machine broken bridge aluminum doors and Windows heat insulation strip production equipment
The difference between nylon insulation strip and PVC insulation strip:
Nylon heat insulation strip to heat insulation, heat insulation, noise insulation, it is high temperature resistance, no burning role. The nylon insulation strip can avoid the gap between the insulation strip and the metal due to the effect of thermal expansion and contraction.
The PVC insulation strip will cause the gap between the insulation strip and the finance due to thermal expansion and contraction, so as to reach the ideal warm suburbs, it can not be called broken bridge insulation doors and Windows.
Therefore, nylon insulation strip is a very ideal insulation strip choice for broken bridge aluminum doors and Windows.
Nylon heat insulation production line broken bridge aluminum heat insulation production equipment Performance characteristics:
PA nylon heat insulation strip extruder, aluminum alloy doors and Windows heat insulation strip extruder equipment, nylon rubber strip machine
PA/PC/ABS/PMMA/PS/PVC profile extrusion line is mainly composed of extrusion host, three-dimensional electric shaping table, belt tractor, cutting machine, material rack and other parts.
1. The extrusion host adopts efficient extrusion screw, frequency conversion speed regulation, and configures different specifications of the host according to various specifications of products.
2. The setting table is made of stainless steel water tray, equipped with domestic first-class vacuum pump.
3. The tractor adopts the best motor, frequency conversion control, manual or electric automatic lifting, belt traction.
4. The cutting machine adopts imported saw blade positioning and cutting.
Nylon insulation strip production line broken bridge aluminum insulation strip production equipment Production process:
PA66 + GF drying -- -- -- -- -- - out of the host plasticizing of -- -- -- -- -- - molding - -- -- -- -- -- - vacuum calibrating device -- -- -- -- -- -- -- tractor -- -- -- -- -- - cutting machine or rewinder machine
The difference between plastic twin screw extruder and single screw extruder is mainly reflected in the following two aspects:
How materials are transported
In a single screw extruder, friction drag is used in the solid conveying section and viscous drag is used in the melt conveying section. The frictional properties of solid materials and the viscosity of molten materials determine the conveying behavior. If some materials have poor friction performance, if the feeding problem is not solved, it is more difficult to feed the material into the single screw extruder. In twin-screw extruders, especially meshing twin-screw extruders, the transfer of materials is to some extent a positive displacement transfer, and the degree of positive displacement depends on the proximity of the screw edge of one screw to the relative screw groove of another screw. The geometry of the screw of the tightly engaged cross-rotating extruder can obtain high forward displacement transport characteristics.
Flow velocity field of material
At present, the flow velocity distribution of the material in a single screw extruder has been described quite clearly, but the flow velocity distribution of the material in a twin screw extruder is quite complicated and difficult to describe. Many researchers just do not consider the material flow in the meshing zone to analyze the material flow velocity field, but these analysis results are very different from the actual situation. Because the mixing characteristics and the overall behavior of the twin-screw extruder mainly depend on the leakage flow in the meshing zone, the flow situation in the meshing zone is quite complex. The complex flow spectrum of the material in the twin screw extruder shows the advantages that the single screw extruder can not compete in the macro, such as sufficient mixing, good heat transfer, large melting capacity, strong exhaust capacity and good temperature control of the material.
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