Application Scenarios and Selection of Extruder Screens

Table 1: Technical Specifications of Spot-Welded and Framed Extruder Screens
Item Single/Multilayer Spot Welding Extruder Screens Multilayer Extruder Screen With Frame
There is a spot welding extruder screen disc.
There is a multilayer extruder screen disc with metal rims.
Material Stainless steel SUS 304, SUS 316, SUS 316L or optional Mesh = Stainless steel SUS 304, SUS 316, SUS 316L or optional
Edge = Aluminum
Diameter (mm) Outer diameter (including edge) = 120 mm
Edge cover = 0.32" (0.8128 cm)
Application Semi continuous screen changer with back flush used in a PET extrusion line Suitable for filtration of PVC melt in a blow film extrusion line
Temperature (°C) 280–295 280–295
Inlet pressure (Bar) 40 150
Outlet pressure (Bar) 20 120
Max. pressure (Bar) 100 300
Recommend structure Single Mesh ⌀ Wire (mm) Single layer ⌀ Wire (mm)
12 0.63 Plain dutch weave mesh 14 × 88
25 0.35 Mesh 14, wire ⌀ 0.5 mm
50 0.22 Mesh 88, wire ⌀ 0.12 mm
100 0.102
120 0.088
Table 2: Technical Specifications of Shaped and Continuous Belt Extruder Screens
Item Irregular/Kidney-Shaped Extruder Screen Continuous Belt Screens
A piece of kidney-shaped extruder on gray background.
A roll of reverse dutch continuous belt screen on gray background.
Material Stainless steel SUS 304, SUS 316, SUS 316L or optional Stainless steel SUS 304, SUS 316, SUS 316L or optional
Diameter (mm) According to drawings or samples Width: 8.32" (21.1328 cm)
Length: up to 30 meters
Application Suitable for RSF extrusion filter system with back flush Suitable for continuous belt screen changer used in a PP / PET extrusion line
Temperature (°C) 280–295 280–295
Inlet pressure (Bar) 70 60
Outlet pressure (Bar) 27 40
Max. pressure (Bar) 150 150
Recommend structure Multi layer Mesh ⌀ Wire (mm) Main filter belt ⌀ Wire (mm)
Layer 1 = 12 mesh 0.63 (External support) Single layer = 120 mesh Reverse dutch weave 150 × 26, mesh 120
Layer 2 = 25 mesh 0.35 (Internal support) Mesh 150, wire ⌀ 0.066 mm
Layer 3 = 120 mesh 0.088 (Inner mesh) Mesh 26, wire ⌀ 0.34 mm
Layer 4 = 25 mesh 0.35 (Internal support) Support filter belt ⌀ Wire (mm)
Layer 5 = 12 mesh 0.63 (External support) Single layer = 40 mesh Reverse dutch weave 40 × 10, mesh 40
- - Mesh 40, wire ⌀ 0.25 mm
- - Mesh 10, wire ⌀ 0.64 mm