Air filter

Variety of filters in painting technology: applications and variants

Air filtration in painting technology is an essential process that aims to remove contaminants such as dust and particles from the air. This can happen in the form of various filters. Some of the most well-known filter elements include filter mats, cardboard filters or filter cubes or filter boxes, pocket filters, compact filters and high-temperature filters.

More than just filtration: The multifunctional role of filter systems

Filter mats are often installed as “ceiling filters” directly into the inflow into the paint booth to ensure homogeneous air inflow. Filters therefore do not always have a direct filtration task, but also ensure homogeneous air distribution, as in the case of filter mats.

Common questions

Filter types

All types of filters presented help improve the quality of painted surfaces by minimizing the number of particles in the air. Regular maintenance and replacement of these filters are essential to ensure consistently high performance and excellent painting results. We would be happy to provide you with an offer that meets your requirements after we have provided you with comprehensive advice.

Filter cells

Filter cells are essential components in air filtration. Like cardboard filters, these often have a cardboard frame, but less depth. These compact units consist of fibers or media that efficiently capture harmful particles, dust, and contaminants from the air. Thanks to their special mini-pleat (mini fold) structure, these filters maximize the surface area, which results in increased particle retention. They are used in ventilation systems, air conditioning systems and cardboard filters in industrial applications.

Compact filter

Due to their design similar to the filter cube, compact filters are also of central importance in painting technology, as they remove particles and suspended particles from the air and thus help to achieve a first-class paint surface. The filter medium, which is tightly folded in contrast to a filter cube, maximizes the filter area and thus ensures a low differential pressure loss and high filtration efficiency. In contrast to cardboard filters, compact filters have no contact with direct overspray or paint particles.

High temperature filter

Unlike cardboard filters, these special filters are made of heat-resistant materials that can withstand the high temperatures in paint ovens. They play a central role in purifying process air from harmful particles and contaminants, resulting in improved paint quality and surface finish. The correct selection and regular maintenance of these high-temperature filters, also known as HT filters, are crucial to ensure optimal painting conditions. As their name suggests, HT filters are used in high-temperature areas such as ovens and drying systems and, unlike cardboard filters, have no contact with direct overspray or paint particles.

Pocket filter

Pocket filters are of central importance in process and room air technology. In painting technology in particular, they make a significant contribution to optimising and determining air quality in paint plants. Unlike filter cubes or filter boxes, for example, pocket filters are not in the first row directly in the paint fog, but usually form the 2nd and 3rd filter stages. In contrast to filter cubes or filter boxes, these special filters consist of several pockets that efficiently separate and bind particles, dust and impurities from the air. The large arrangement of the filter bags increases filter capacity and ensures clean air in paint booths. These filters help to improve the quality of painted surfaces by minimizing the concentration of particles in the air. While filter cubes and filter boxes tend to cover the coarser area, pocket filters are intended more for finer separation behind the 1st filter stage. Regular maintenance and filter changes are necessary to ensure consistently high pocket filter performance and optimal painting results as well as emission requirements.

Filter mats

Filter in its simplest form, a filter medium assembled as a cut is an important element in air filter systems. Made from dense fiber materials, they effectively capture particles and contaminants. The open structure enables high air permeability and efficient filtration. Filter mats are used in ventilation systems, paint booths, and industrial environments to improve air quality. In painting technology in particular, the filter mats are used in exhaust and supply air areas. Paintstop mats made of glass fiber or PaintMesh mats made of paper fabric and synthetic fiber filter mats are often used in exhaust air. Ceiling filters (coarse or fine dust filters) made of synthetic fiber medium are usually used in the supply air. The selection is based on the filter class, air flow and requirements.

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