Polymer extruder screen is made of high quality corrosion resistance materials (galvanized copper, stainless steel and nickel alloy). A wide range of micron ratings are available to meet different filtration demands.
Polymer extruder screens are widely used for filtration and co-mingling processes in the production of various viscous flow materials and products such as plastics, chemical fibers, rubber, hot melt adhesives, adhesives, finishing materials, blends, etc. It can effectively block foreign matter from being mixed in the final plastic and rubber extrusion process and provide a clean, viable extrusion.
As we use high quality non-toxic raw materials, our polymer extruder screens can also be used in the food and beverage industry.
The filter disk is equipped with a large under of polymer extruder screens. The filtration time or pressure value is preset. The melt enters from the inlet, the screen at the inlet starts to filter impurities and gel impurities are trapped on the screen surface. When the filtration time or pressure reaches the preset value, the filter disk begins to rotate. The clean part of the screen rotates to the inlet and starts to filter impurities, meanwhile the screen saturated with impurities moves to the screen change port. The turntable stops rotating, the screen change port opens, the screen with impurities is removed and replaced with a clean screen. In this process, the resting part of the screen keeps operating smoothly, thus realizing continuous operation.
Polymer extruder screen is generally made of plain weave and Dutch weave wire mesh. The plain weave wire mesh features simple structure, economic to process and high cost-effectiveness and can meet the most filtration requirements of plastic products and rubber industries. In a filter, the Dutch weave wire mesh plays the role of fine filtration without requiring a backup filter screen, featuring high strength, high load capacity, simple structure and long service life.
Plain weave polymer extruder screen
Dutch weave polymer extruder screen
In terms of the filter media selection, the working conditions of the polymer extruder screen shall be taken into fully consideration. For example, we will choose stainless steel wire mesh in some PVC production lines or other applications need to avoid rust, and nickel alloy wire mesh is used to avoid corrosion caused by fluoropolymers or PVDC.
Stainless steel polymer extruder screen has good corrosion resistance and rust resistance.
Black wire cloth polymer extruder screen has exceptional durability.
Brass polymer extruder screen has good ductility and machinability.
Copper polymer extruder screen has great conductivity and soft texture.
Our polymer extruder screen can be designed into different shapes to meet the need of different extruders.
Round polymer extruder screen
Ring polymer extruder screen
Rectangular polymer extruder screen
Oval polymer extruder screen
Kidney polymer extruder screen
We offer metal (stainless steel or aluminum alloy) edges, spot welded or rubber edges to reduce the wear and tear of the polymer extruder screen, improve the durability and strength of the screen, ensure the stability of the overall structure and extend the life of the screen. Other edges are available upon request.
Aluminum alloy edge
Solid structure and improved abrasion resistance.
Spot welded edge
Not easy to be damaged and deform, and offers an extended service life.
Rubber edge
Elastic edges offers good ductility and great stress resistance.
Polymer extruder screen is made by welding several screens with different mesh sizes. Among the screens with different mesh sizes, the finest wire screen is placed in the middle of the extruder screen, and coarse wire screen is placed at the outermost side, against the protection plate. The coarse wire mesh is in contact with the molten polymer first, to prevent the finest screen from being blocked by the rotational movement or large impurities of the molten material. The extruder screen is mostly symmetrical to prevent the screen from being installed backwards accidentally, such as the arrangement may be (20 mesh/60 mesh/100 mesh/60 mesh/20 mesh).
To ensure the polymer extuder screen offers th most effective filtration and extrusion, when you choosing the product, the following aspects shall be taken into consideration: weave type (plain weave or Dutch weave), mesh count (the number of mesh per square inch), wire diameter and open area.
| Mesh | Wire Diameter (mm) | Opening Size (mm) | Open Area (%) |
|---|---|---|---|
| 10 × 10 | 0.711 | 1.829 | 51.8 |
| 14 × 14 | 0.457 | 1.357 | 55.9 |
| 16 × 16 | 0.457 | 1.131 | 50.7 |
| 20 × 20 | 0.559 | 0.711 | 31.4 |
| 20 × 20 | 0.457 | 0.813 | 41.0 |
| 24 × 24 | 0.376 | 0.682 | 41.4 |
| 30 × 30 | 0.376 | 0.531 | 34.2 |
| 30 × 30 | 0.310 | 0.536 | 40.0 |
| 40 × 40 | 0.274 | 0.361 | 32.3 |
| 50 × 50 | 0.193 | 0.335 | 43.6 |
| 60 × 60 | 0.193 | 0.230 | 29.8 |
| 80 × 80 | 0.122 | 0.196 | 37.9 |
| 100 × 100 | 0.102 | 0.152 | 36.0 |
| 120 × 120 | 0.091 | 0.120 | 31.8 |
| 150 × 150 | 0.071 | 0.088 | 29.6 |
| 200 × 200 | 0.050 | 0.077 | 36.76 |
| 250 × 250 | 0.040 | 0.062 | 36.76 |
| 300 × 300 | 0.040 | 0.045 | 27.83 |
| 325 × 325 | 0.035 | 0.043 | 30.49 |
| 400 × 400 | 0.028 | 0.036 | 31.25 |
| 500 × 500 | 0.025 | 0.026 | 25.79 |
| Note: Other specifications are available upon request. | |||
| Warp/Weft Mesh |
Measurement | Opening Size (mm) | Nominal Micron Rating |
|---|---|---|---|
| 12/64 | 26 × 26 | 0.457 × 0.457 | 180 |
| 24/110 | 28 × 32 | 0.376 × 0.274 | 115 |
| 30/250 | 38 × 42 | 0.132 × 0.102 | 70 |
| 50/250 | 38.5 × 41 | 0.140 × 0.112 | 60 |
| 50/600 | 40 × 44 | 0.122 × 0.081 | 30 |
| 80/400 | 40 × 45.5 | 0.102 × 0.063 | 40 |
| 80/700 | 42 × 44 | 0.102 × 0.063 | 35 |
| 100/600 | 42 × 45.5 | 0.102 × 0.081 | 25 |
| 120/600 | 42 × 45.5 | 0.102 × 0.063 | 28 |
| 170/1400 | 43.5 × 48 | 0.063 × 0.040 | 10 |
| 200/600 | 47 × 48 | 0.50 × 0.040 | 20 |
| 325/2300 | 48 × 40 | 0.40 × 0.122 | 5 |
| Note: Other specifications are available upon request. | |||
