Industry · Paint Industry
From resin synthesis to the filling line: filtration engineering that prevents agglomeration, color deviation and surface defects at the source.
4×
Longer precision filter life through pre-filtration
1–25 µm
Final check precision before filling
Viton · PTFE
Sealing on solvent lines
Critical points
In paint production, quality depends on how evenly the pigment is dispersed and at which stage particles are captured. Staged filtration, designed from pre-filtration to the final check before filling, manages both color stability and filter costs.
Uniform dispersion of the pigments used in a paint formulation is critical for hiding power and gloss. Undissolved pigment agglomerates and gel particles impair the paint’s optical properties; separating these unwanted structures through filtration directly safeguards color stability. In clear varnish and lacquer production, removing sub-micron impurities maximizes optical depth. In this segment, clarity is not an aesthetic choice but a core performance parameter of the product.
Solution: Removing pigment agglomerates with depth filters
The high viscosity of paint can cause filters to load quickly. A staged filtration approach solves this in terms of both quality and cost. Removing coarse particles from the main line at the pre-filtration stage can extend the service life of expensive precision filters up to fourfold. The final check at the filling stage is the product’s last quality approval point before it leaves the factory. Filtration at 1–25 micron precision at this point minimizes customer complaints and return risks. Choosing the wrong micron rating or using low-quality filters leaves particles in the paint, which then cause direct quality problems during application such as surface roughness, seeding and spray nozzle clogging.
Solution: Pre-filter + precision filter stages
Filtering resins, the core component of paint production, is essential for both product quality and process safety. Aggressive solvents and high-temperature resin lines are not suitable for standard filter materials; on these lines, AISI 316L stainless steel housings and solvent-resistant seals such as Viton or PTFE should be used. Antistatic bag filters are also required for safety against static electricity. Retaining and recovering the valuable catalysts used in synthesis within the filter system is another gain in raw material savings that should not be overlooked.
Solution: AISI 316L housing and antistatic bag
The most common problem end users face, whether in automotive painting or industrial coating, is particles in the paint clogging spray guns. A production line controlled to micron precision eliminates this risk at the source and keeps spray equipment flowing without interruption. Common paint defects such as pinholes and fisheyes are also caused directly by particles. Filtration quality at the final point of production prevents these defects and ensures a flawless surface finish.
Solution: Micron control before filling
Paint production line
Select a stage on your line to see the Prosestim filters and micron range used at that point.
01 · Hot · solvent
On aggressive solvent and high-temperature resin lines, AISI 316L housings with Viton or PTFE seals are preferred.
02 · Pigment agglomerates
Undissolved pigment agglomerates and gel particles impair the paint’s optical properties.
03 · Coarse particles
Removing coarse particles from the main line can extend the service life of expensive precision filters up to fourfold.
04 · 1–25 µm
A final check at 1–25 micron precision reduces customer complaints and return risks.
05 · Sub-micron
In clear varnish and lacquer production, removing sub-micron impurities determines optical depth.
Applications
The same filtration principles apply across applications, with different material and micron choices.
Staged filtration and filling.
Spray nozzle protection and surface quality.
Sub-micron clarity.
Solvent and static safety.
Products used in this industry
Each product page lists the micron range, material compatibility and operating conditions.
Phenolic/acrylic resin-bonded cartridge filter for paint, ink, resin and adhesive lines, 1–150 µm
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Fully welded SMS bag filters, 0.5–10 µm, for gel-like and deformable particles; dirt-holding capacity above 1 kg
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Polyester felt bag filters, 1–200 µm, rated up to 135 °C; used on paint, coating and chemical lines
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Ultrasonically welded polypropylene felt bag filter, 1–200 µm, resistant to pH 1–14; for chemical, paint and water lines
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Pleated micro cartridge filter with PES, PTFE, PVDF and PP membranes; 0.11–50 µm for sterile and precision filtration
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Bag filter housing with 1–24 bag capacity and AISI 304/316/316Ti body; high flow, low pressure drop
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