Air and liquid filter media are typically made of fibrous materials like glass, synthetic fibers, and cellulose. Many factors affect filtration efficiency, such as the density, thickness, diameter, orientation, and surface characteristics of the fibers.
Cellulose is among the most commonly used fibers in filtration media. This versatile, proven, and cost-effective material is made from renewable resources and compatible with a multitude of filter production processes, such as embossing, corrugating, and pleating. However, as with all materials, there are compromises. For example, cellulose can lose mechanical strength in certain chemical or high-temperature environments and absorb water in high-humidity conditions, potentially altering its filtration properties.
What Is Cellulose Filter Media?
Similar to traditional papermaking, cellulose media is manufactured using a wetlaid process. The result is a filtration media platform suitable for a broad range of filtration applications, with the ability to capture an array of particles down to nanoparticles. Cellulose filter media can be made from pure cellulose fibers or cellulose fibers mixed with synthetic fibers or glass fibers for enhanced properties. It serves as a diverse and versatile filtration solution that functions by trapping contaminants and other particles within a matrix of fibers.
There are different grades of cellulose filter media designed to meet application-specific requirements. Grades are formulated from different combinations of fibers and resin systems, each providing different physical properties, chemical resistance, filtration efficiency, pressure drop, and flow characteristics. While each grade may differ in its capability and composition, all cellulose filter media contain resin and cellulose fibers.
Cellulose filtration media offers a host of benefits, including:
- Renewable fiber sources
- High strength and durability
- Large surface area
- Chemical stability
- Temperature stability
- Strong adhesion to glass or meltblown layers
- Good value
What Are Some Common Uses of Cellulose Filter Media?
Cellulose filter media is widely used in a range of applications. Each product platform has been highly engineered to optimize fiber content, structure, resin chemistry, and other characteristics. Common applications for cellulose media are:
- Gas turbine filtration
- Fuel and oil filtration
- Engine air intake filters
- Coalescing filters
- Hydraulic filters
- Process liquid operations
Why Choose H&V’s Cellulose Filter Media?
At Hollingsworth & Vose, cellulose paper is our most cost-effective filter media. It offers excellent filtration efficiency in the >10 micron range with high dirt-holding capacity. To learn more about our cellulose filtration media, contact us today.