Single Screw Extrusion Machine

Time:2019-07-11

Single Screw Extrusion Machine Introduction

Single screw extrusion machine Manufactured by Benk Machinery Co LTD.

Single screw extrusion machine produced by Benk Machinery is mainly used to process PP, PE, PPR, ABS, and other plastics. Mostly single screw extruder would be used for extruding polyethylene (PE) etc which raw materials are granules statement. Coordinated with the appropriate auxiliary machines, it can produce many kinds of plastic products such as pipe, profile, sheet as well as granules.

Single Screw Extrusion Machine Overview

Product Name Single Screw Extruder
Material 38CrMoAlA,
Diameter Φ20mm-200mm
Application Suit for cable, sheet, pipe, profile, and granules
Nitride Case Depth 0.5mm-0.8mm
Nitride Hardness 1000-1100HV
Nitride Brittleness ≤Grade One
Surface Roughness Ra0.4um
Screw Straightness 0.015mm
Alloy Hardness HRC68-72
Designing Screw structure and the compression ratio can be designed according to different products & different output requirements.
Technology 1) Longer time Gas Nitriding treatment
2) Special corrosion & abrasion alloy (bimetallic)
3) Special design according to application material
4) Europe L/D ratio
5) long use life lower power consumption
Packing Export standard package
Payment Term T/T, L/C, WESTERN UNION
Delivery Term 50 working days
Port Departure Shanghai
Min. Order 1 set
Guarantee Common Nitrided:2.5-4years(depend on raw material)
Bimetallic: much longer lifetime

Single Screw Extrusion Machine Plastic Extrusion Process

Plastic materials are gravity fed from a hopper into a jacketed screw.
As the screw turns about its axis, it transports, melts, and pressurizes the plastic.
From the metering section, the plastic enters the front flange of the die, which is bolted onto the end of the extruder barrel.
It flows around the mandrel, suspended in the center of the channel.
At the rear of the mandrel, a pin and a land size the product.
When the product leaves the die, it enters a vacuum chamber where it is pulled through sizing rings. The combination of vacuum pulling and air pressure forces the plastic to conform to the shape of the rings. The vacuum chamber is water-filled, which cools the plastic into a hard solid.
The cooled product is then pulled by haul-off unit and is cut to length or coiled up.

Single Screw Extrusion Machine

Single Screw Extrusion Machine Characteristics

1. It is suitable for various polyolefin materials: HDPE, PPR, PP, ABS, etc.
2. It adopts an advanced computer module control system to realize the automatic control of the whole line and results in high output, good plasticization, and wide applications. 3. Excellent temperature control system to ensure the stability of the producing process design of compulsively water-cooling and feeding grooved sleeve ensures steady and even production.
4. High-performance driving system; Wearable and easy to maintain.
5. It has advantages of high capacity in plasticizing, low noise, low power consumption, smooth operation, large loading, long use-life, and so on.

Single Screw Extrusion Machine Technical Parameters

Product Name Screw diameter(mm) Screw L/D Motor power (kW) Output Torque (N.M) Screw speed (r/min) Max output (kg/h)
SJ25/25 25 25:1 1.5 175 100 3.4
SJ30/25 30 25:1 5.5 410 125 12.5
SJ45/25 45 25:1 7.5 580 100 20
SJ45/30A 45 30:1 15 1000 145 40
SJ45/33C 45 33:1 37 1600 185 150
SJ60/25 60 25:1 22 1500 100 60
SJ60/33 60 33:1 55 3600 105 160
SJ60/38 60 38:1 110 4800 120 450
SJ70/38 70 38:1 160 7200 120 750
SJ90/25 90 25:1 55 4400 120 150
SJ90/33 90 33:1 160 9200 120 600
SJ90/38 90 38:1 250 13000 120 1250
SJ120/25 120 25:1 90 9200 94 350
SJ120/33 120 33:1 220 16000 94 800
SJ120/38 120 38:1 320 25000 94 1600
SJ150/25 150 25:1 110 35000 40 320
SJ150/33 150 30:1 315 36000 50 1000
SJ150/38 150 38:1 400 32000 75 2200
SJ200/25 200 25:1 160 50000 30 500
SJ200/30 200 30:1 400 60000 40 1300
SJ200/38 200 34:1 500 55000 75 2750

Single Screw Extrusion Machine Application

1. Pipe extrusion: PE/PP/PPR pipe, PE gas pipe, PEX cross-linked pipe, ABS pipe, HDPE silicon core pipe, and a variety of co-extruded composite pipe
2. Sheet and profile extrusion: adjust the extrusion speed and change the screw structure to be suitable for manufacturing PET/PS/PP/PC profiles and sheet etc.
3. Modified granulation: kinds of plastic blending, modifying and enhancing granulation