Import outsourcing

Plastic Extrusion Machine

Equipment for the production of plastic pipes, profiles, and moldings by extrusion.

The extruder is equipped with additional machines for the production line.

APPLICATION

The extruder produces extended products from plastics: pipes, profiles, plates, films, or large-volume products.

It is used for the production of:

  • Engineering pipes (polypropylene, polyethylene, PVC)
  • PVC profiles for windows and doors
  • Panels/plates for window sills and doors
  • Diffusers for lamps (polycarbonate/plexiglass)
  • Cable channels, baseboards
  • Edge tape
  • Cable sheath
  • PVC seals
  • Hoses
  • Medical tubes
  • Decorative frames
  • Grids
  • Wood-plastic composites
  • PVC composites

FEATURES

The components and mechanisms of the extruder are reliable and have a simple design. Malfunctions are rare and easily fixed. The equipment requires a low maintenance cost.

There are several key parameters that need to be controlled in the extruder operation. The operator and 1-2 auxiliary workers are required to start and operate the machine.

Forming dies of extrusion machines have lower metal consumption, compared to the molds of injection molding machines.

Types of extruders:

  • Single-screw
  • Twin-screw

Single screw extruder is the simplest type of machine and is used for processing plastics with good mechanical characteristics.

When processing powders and raw materials that tend to stick together, the raw material in the single-screw extruder circulates unevenly. It can cause overheating of plastic or pressure surges on the die.

Twin-screw extruder provides a more uniform circulation and melting of the material in the cylinder.  Rotation of the screws can be parallel or counter. Twin-screw machines are recommended for processing hard-to-loose plastics.

The single-screw mechanism only cleans the cylinder. Twin-screw extruders can be completely self-cleaning.

The extruder type and performance are selected individually depending on the production task. Dies for extruders are made to order according to product drawings. They determine the shape of the finished product.

STRUCTURE AND OPERATION

The main mechanism of the extruder is a screw. The force that rotates the screw is transmitted from the electric motor through the gearbox. The motor is controlled by a frequency controller.

The plastic raw material is fed through the feed hopper to the screw feed area. The necessary additives and dyes are pre-added to the mixture. Optionally, a granulator can be used.

As moving along the heaters in the plasticization zone, the polymer melts and is fed by the screw to the extrusion head. The extruder builds a pressure of 15-100MPa. The molten polymer is forced through the die heads. The die pattern determines the shape of the products.

After exiting the extruder, the polymer is cooled and cured in the air or in a bath. Plastic achieves the required shape and mechanical properties.  During extrusion, the chemical composition of the plastic does not change.

The equipment operates continuously. Therefore, winding or cutting the finished product must be provided.

PRODUCT LINE

EMD-55EMD-65EMD-90EMD-110EMD-130
Screw length/diameter25 / 2825 / 2825 / 282222
Screw diameter (mm)55х265х290х2110х2130х2
Rotation speed (rpm)6060443830
Engine power (HP)20— / 3060 / 7590 / 100125 / 150
Cylinder heater power (kW)18— / 2230 / 3842 / 5080 / 90
Flange heater power (kW)4567.58.5
Cylinder cooler power (kW)0.60.60.61.21.2
Plant capacity (kW)38 / 5340 / 5182 / 102119 / 133175 / 192
Number of mold heaters2+32+32+42+42+4
Number of cylinder heaters44445
Hopper capacity (kg)75100150200200
Height (mm)11001100110011001100
Weight (kg)16002000300041005600
Capacity (kg/h)High density PE
Soft PVC
Hard PVC60 / 80120 / 160400 / 500600 / 700800 / 1000
EMD-55CEMD-65CEMD-80CEMD-92C
Screw length/diameter22222222
Screw diameter (mm)55/11265/13280/15692/188
Rotation speed (rpm)40404040
Engine power (HP)305075150
Cylinder heater power (kW)16223953
Flange heater power (kW)2448
Cylinder cooler power (kW)1.51.51.52
Plant capacity (kW)4867102160
Number of mold heaters24810
Number of cylinder heaters4444
Hopper capacity (kg)75100150150
Height (mm)1100110011001100
Weight (kg)2300360039004800
Capacity (kg/h)High density PE
Soft PVC

 

Hard PVC60-12080-150250-360450-600
EMS-45EMS-55EMS-65EMS-85EMS-100EMS-125EMS-150
Screw length/diameter24 / 2824 / 2824 / 2824 / 2824 / 282424
Screw diameter (mm)45556585100125150
Rotation speed (rpm)60 / 12060 / 12060 / 12050 / 12050 / 1205045
Engine power (HP)15 / 3020 / 3030 / 7540 / 15050 / 200100125
Cylinder heater power (kW)7.5101214152025
Flange heater power (kW)0.50.60.7111.52
Cylinder cooler power (kW)0.05х30.05х30.05х30.1х30.1х40.2х30.2х3
Plant capacity (kW)22 / 3430 / 6836 / 9247 / 16088 / 238133180
Number of mold heaters2333456
Number of cylinder heaters3334578
Hopper capacity (kg)505050100100150150
Height (mm)1100110011001100110011001100
Weight (kg)85095011001600220025003000
Capacity (kg/h)PE pipes— / 100— / 70— / 150— / 350— / 500
PE profile40 / —25 / —70 / —100 / —150 / —200250

OPTIONS

An extruder with special equipment for preparing raw materials and processing finished products forms a production line.

Additionally can be supplied:

  • Raw material preparation and loading system (drying, calibration)
  • Mixers (mixing raw materials for co-extrusion and composite production)
  • Degassing unit (prevents the formation of cavities in the product due to bubbles in the molten plastic)
  • Air and liquid coolers (for forced cooling and acceleration of polymerization)
  • Profile pulling mechanisms
  • Cutting machine
  • Stacker
  • Winding machine
  • Marking systems
  • Printers and laminators

SELECTION

To select a suitable model of the tangential fan, please, leave a request to our specialist. In the request, describe the task that you need to solve.