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Zhengzhou Great Machinery Co., Ltd.

Screen Changer, Large Capacity Screen Changer, Extrusion Screen Changer manufacturer / supplier in China, offering Double Piston Large Capacity Screen Changer for Pet Monofilament Extrusion Line, Melt Filtration Products-Double Plate Type Continuous Polymer Melt Filter, Dual Piston Screen Changer for LDPE Recycling Machine and so on.

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Supplier Homepage Product Gmach polymer melt filtration system Continuous screen changer Double Piston Large Capacity Screen Changer for Pet Monofilament Extrusion Line

Double Piston Large Capacity Screen Changer for Pet Monofilament Extrusion Line

FOB Price: US $7,000 / Piece
Min. Order: 1 Piece
Min. Order FOB Price
1 Piece US $7,000/ Piece
Get Latest Price
Port: Shanghai, China
Transport Package: Seaworthy Packaging
Payment Terms: L/C, T/T, D/P, Western Union, Paypal, Money Gram
Basic Info
  • Model NO.: GM-DP-L series
  • Product Type: Monofilament Extrusion Line
  • Assembly Structure: Integral Type Extruder
  • Engagement System: Full Intermeshing
  • Exhaust: Exhaust
  • Computerized: Computerized
  • Function: Polymer Melt Filtration
  • Fit for: Almost All Kinds of Polymer
  • Trademark: Gmach
  • Plastic Processed: Pet
  • Feeding Mode: One Feed
  • Screw: Twin-Screw
  • Screw Channel Structure: Deep Screw
  • Automation: Automatic
  • Product Name: Screen Changer /Melt Filter
  • Belong to: an Auxiliary Part of Plastic Extruder
  • Used to: Pipe /Sheet /Fiber / Film /Pelletizing Line
  • Origin: China
Product Description
Benefits of this GM-DP-R series continuous screen changer for extruder
Increased production
Reduced downtime & scrap
Leak-free operation
Increased filtration area
Reduced inlet pressures
Accurate, repeatable screen changes
Reduced maintenance

Technical data
1)The main body of the screen changer
Raw material: Alloy steel(38CrMoAlA)
Surface treatment: Nitriding treatment
Depth of Nitrated Layer: 0.40-0.70mm
Nitrided hardness: 950-1050Hv
Fragility of nitration: Less than grade 1

Flow channel treatment: Chrome plated
Depth of chromium-plating: 0.05-0.1mm
Hardness of surface after chromium-plating: HV950HV

2)Drive system: Hydraulic unit:

3)Control system
Electrical controlling system: Warnning device, pressure and temperature transducer, are included

Working principle of this GM-DP-R series continuous screen changer

As the polymer melt enters the main body ofthe screen changer, the melt stream is divided equally and flows into the two channels, go through the two breaker plates, and the impurities are intercepted by the screen mesh, and when screen changing is required, one of the pistons with blocked screen pack is pushed out by hydraulic unit, and the other is still on the working position, we replace the fresh screen and then the piston with new screen is pushed into the working position, at this time, the air bleeding system also begin to work. The other piston screen change is the same with above. This type of continuous screen changer maintains a continuous melt flow.

Technical data 

Screen D&A

O verall dimension

Heating power

S creen diamension
   L*W      (mm)
Filtration area
G M -DP-L-100251x80200x22202003208103.5/4.7450-1200
G M -DP-L-120314x100314x22502203609705.0/7.2800-1800
GM -DP-L-155408x130530x232027045011008.2/11.11000-2600
G M -DP-L-175471x180846x237031048013209.4/12.72300-4400
G M -DP-L-195533x1901012x2400380550147010.2/13.82900-6000
G M -DP-L-220596x2001192x2440410590162013/17.53900-10000
Remark: The output rates depend on the individual  extrusion  process parameters.


1. Non-woven fabrics extruder
2. Granulation extruder
3. Pipe extrusion machine
4. Plate extruder
5. Sheet extruder
6. Cast film extrusion machine

Quality inspection
We take only first-class steel and check every production procedure to ensure every dimension is produced precisely. A final complete inspection will be executed before delivery. We guarrantee that every set of scren changer from our factory is the best quality.
Seaworthy packaging

We provide the operation manual for customers to gudie to install the screen changer, and at the requirement of user, salers should send technician to install and commissioning the die at site of Buyers, expenses of the trip should be borne by Buyers.

After-sales service
12 months with proper operation by user, all the spare parts shall be replaced free of charge under guarantee period, fee for transportation and packing will be borne by users.
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