Filtration & Laboratory services
At Markert, our service in filter technology is designed to help you find the perfect filtration solution for your specific needs. We combine advanced fabric analysis, in-depth material knowledge, and personalized consultations to optimize your solid/liquid separation processes. This page explains the characteristics of different filter fabrics and weaving patterns to help you make an informed choice.
Custom Fabric Development and Analysis
Determining Your Fabric’s Filtration Properties
To ensure optimal performance, we analyze the filtration properties of fabric samples. Our modern, in-house laboratory is equipped with professional testing equipment that allows our research and development team to accurately measure key metrics.
Following VDI 2762 standards for overpressure filtration, we analyze:
- Cake weight
- Cake height
- Residual humidity
- And much more
This detailed analysis helps us identify or develop the ideal fabric for your application.
Understanding Our Filter Fabrics
Choosing the right filter fabric is crucial for efficient operation. The type of yarn used in the fabric determines its core characteristics, such as cleaning efficiency, particle retention, and durability.
Fabric Filament Characteristics
→ Monofilament:
The monofilament yarn is a yarn or thread consisting of only one single filament. Its primary benefits include excellent resistance to blinding, easy cleaning, and superior filter cake release, as it hardly sticks to the very smooth monofilament yarns. In addition, monofilament yarns provide superior filtration throughput (filtration speed).
To achieve high separation efficiency, other fabric parameters like yarn density and weave type become more critical.
→ Multifilament:
The multifilament yarn consists of a series of very fine monofilament threads twisted together into a bundle. Usually, multifilament yarns are not measured in mm, but in dtex (most common). This value indicates, in the broadest sense, how many individual yarns make up the bundle. Multifilament fibers have offers high mechanical stability, good protection against abrasion, and provides better particle retention than monofilaments. However, the bundled structure is accompanied by an increased risk of particles remaining in the filament and thus reducing its cleanability.
→ Staple filament:
Staple fibers are very similar in appearance to multifilament yarns. but made of shorter, varied-length fibers twisted together (which are much shorter than the total length of the fiber). The individual fibers do not form a flat picture as in the case of multifilament but protrude irregularly from the fiber. This structure creates a larger specific surface area, resulting in the best particle retention and good resistance to blinding. However, this structure also means that staple fibers are difficult to clean, tend to block, and cake release is more difficult due to the large contact surface.
Definition
| 1 | = | poor |
|---|---|---|
| 2 | = | moderate |
| 3 | = | good |
| 4 | = | excellent |
Weaving patterns
→ Plain Weave:
The simplest and most common weave, where threads interlace one over one. This creates the densest fabric, offering high particle retention, good stability, and strong abrasion resistance. However, it can be more prone to blinding and offers less ideal cake release.
→ Twill Weave:
A versatile, all-around weave where threads pass over multiple other threads, creating a distinct diagonal pattern. This looser weave offers a good balance of durability, flow rate, and particle retention, making it a reliable choice for many applications.
→ Satin Weave:
A very smooth weave where threads float over many other threads, minimizing interlacing points on the surface. This design provides excellent cake release, high resistance to blinding, and very high throughput. The trade-off is lower fabric stability and abrasion resistance.
Definition
| 1 | = | poor |
|---|---|---|
| 2 | = | moderate |
| 3 | = | good |
| 4 | = | excellent |
Personalized Expert Consultation
Finding the ideal filter for your unique application can be complex. Markert’s sales engineers are here to support you every step of the way. We work with you to find innovative solutions for your solid/liquid separation challenges.
We can provide consultations on-site at your facility, at our company, or remotely using digital media. We guarantee the highest quality products specifically designed to achieve optimal performance for your filtration process.
Contact us today to discuss your filtration needs and let our experts guide you to the perfect solution.
