Air filters are typically made from filter media like spun fiberglass material or from pleated paper or cloth enclosed in a cardboard frame.
The Basic Construction of Air Filters
Air filters are essential components in HVAC systems and other applications, designed to capture airborne particles and improve air quality. Their construction is based on combining specific materials to create a porous barrier for contaminants while allowing air to pass through.
Based on common types, air filters are constructed using:
- Filter Media: This is the core component that traps particles. According to common manufacturing methods, this media is often spun fiberglass material. Alternatively, it can be crafted from pleated paper or cloth. The pleating of paper or cloth media increases the surface area available for capturing particles within the same filter size.
- Frame: The filter media is then enclosed in a cardboard frame. This frame provides structural integrity, making the filter rigid and easy to install in air ducts or filter housings.
This combination of filter media and a frame creates a simple yet effective device designed to trap airborne contaminants.
Materials Used in Air Filter Construction
The primary materials form the filtering layer and the supporting structure.
| Component | Materials Mentioned in Reference | Purpose |
|---|---|---|
| Filter Media | Spun Fiberglass Material | Traps airborne particles |
| Filter Media | Pleated Paper or Cloth | Traps airborne particles |
| Frame | Cardboard | Provides structure and support |
What Air Filters Capture
These constructed filters can hold many types of contaminants or particulates that could affect your health. Examples of common particles captured by these filters include:
- Dust and dirt
- Hair and animal fur
- Other common airborne particulates
By trapping these substances, air filters help maintain cleaner air within enclosed spaces.
