Product Overview
The production process of plastic powder sintered filter elements mainly includes key steps such as raw material preparation, pressing and forming, sintering, and post-processing. The specific process is as follows:
1. Raw Material Preparation
Select high-quality polyethylene (PE) or other plastic powders as raw materials. Depending on requirements, sieve and clean them to ensure uniformity and purity of the particles. Some processes may add polymer thermoplastic pore-forming materials (such as polytetrafluoroethylene) to adjust the performance of the filter elements.
2. Pressing and Forming
Place the plastic powder into molds and use cold or hot pressing to initially form the shape. During hot pressing, the temperature needs to be controlled to soften the powder, and the pressure and time parameters directly affect the density and pore structure of the filter element. For filter elements with complex shapes, a bidirectional pressing technique may be used.
3. Sintering
The formed filter element is sintered in a high-temperature furnace, typically at a temperature range of 200-300°C (for polyethylene). During the sintering process, the particle surfaces melt and bond together, forming a porous and sturdy filter structure.
4. Post-Processing and Inspection
Surface Treatment: Improve surface flatness through mechanical grinding or chemical methods.Precision
Adjustment: Perform cutting, drilling, and other operations to meet different filtration requirements (such as an accuracy range of 1-100 μm).
Quality Inspection: Includes visual inspection, filtration efficiency testing, and pressure resistance verification.
| Parameter | Specification |
|---|---|
| Material | HDPE(high-density polyethylene) PP(polypropylene) |
| Standard Diameters | 2mm to 500mm (Custom sizes available) |
| Standard Thicknesses | 1mm to 100mm (Custom thicknesses available) |
| Filtration Ratings | 1, 2, 5, 10, 20, 40, 60, 100 microns |
| Maximum Operating Temperature | 80℃ (176℉) |
| Maximum Differential Pressure | 12 bar depending on dimensions |
| Porosity | 30% to 45% (Adjustable based on requirements) |
| Surface Finish | Standard or Electropolished |
| Certifications | ISO 9001, Material Certification, FDA Compliance |
Customization Available
Most of our products are custom-manufactured based on customer specifications. We can produce filter discs according to your exact drawings, dimensions, and performance requirements. Our engineering team is available to assist with design optimization for your specific application.
Features & Benefits
Superior Corrosion Resistance
Plastic material provides excellent resistance to corrosive media, including acids, alkalis, and salt solutions.
High Temperature Stability
Maintains structural integrity and filtration performance at temperatures up to 400°C (752°F).
Precise Pore Size Control
Available in multiple micron ratings from 1 to 100 microns for exact filtration requirements.
Mechanical Strength
High structural integrity allows for use in high-pressure applications up to 40 bar (580 psi).
Customizable Dimensions
Available in diameters from 1mm to 500mm with custom thicknesses to meet specific requirements.
Uniform Porosity
Consistent pore structure ensures reliable filtration performance and predictable flow rates.
Versatile Industrial Applications
Plastic filter are widely used in food and beverage, pharmaceuticals, chemicals, petrochemicals, and wastewater treatment. They handle applications like liquid and gas filtration, cryogenic gas processing, and corrosive media separation.
With high filtration capacity, chemical and temperature resistance, and easy maintenance, they are ideal for reliable and efficient industrial filtration.
