Cleanable stainless-steel screens for hygienic separation and product protection
Screens and strainers in food production must achieve the separation duty while supporting hygiene, cleanability, traceability and foreign-body control. We supply stainless-steel woven mesh, crimped screens, discs, baskets and cylinders for dry screening, liquid straining and equipment protection. Food-contact suitability must be confirmed for the finished article and intended market—not assumed from the alloy name alone.
What Customers Need to Control
- Product loss or low throughput caused by the wrong aperture shape
- Blocked mesh, trapped residue or difficult cleaning
- Wire fatigue and foreign-body risk on vibrating screens
- Incomplete food-contact documentation for the destination market
Application-to-Solution Matrix
| Process / Duty | Recommended Mesh Solution | Key Selection Inputs |
|---|---|---|
| Sugar, flour, starch, spice | Square or long-slot woven/crimped screen | Particle shape, cut size, throughput, blinding tendency |
| Brewing, juice, edible oil | Stainless woven strainers, baskets or cylinders | Viscosity, solids load, CIP, surface and joint design |
| Water and ingredient protection | Fine mesh disc or supported element | Upstream particle load, ΔP, inspection and replacement access |
| Vibratory screening | Crimped/rectangular mesh with engineered tensioned edges | Machine, tension direction, fatigue, gasket and metal detection plan |
Verified Data & Public Application Evidence
Public industry case
Public application reference — sugar screening. Haver & Boecker’s technical note reports that rectangular apertures commonly use a 1:3 aspect ratio and can reach 1:25; compared with square mesh using comparable wire, the larger open area can increase throughput and flexibility. It also describes magnetisable 1.4462 duplex stainless steel for sugar screens so broken metal can be detected magnetically, while balancing hardness and vibration fatigue. These are supplier-specific design observations, not universal performance guarantees.
Engineering interpretation
Regulatory basis: Regulation (EC) No 1935/2004 requires food-contact materials, under normal or foreseeable use, not to transfer constituents in quantities that endanger health, unacceptably change food composition, or deteriorate organoleptic properties; it also establishes traceability expectations. A material certificate alone does not establish full compliance of a fabricated filter.
Information Required for Selection
- Food/product, moisture, fat, acidity and temperature
- Target cut size and allowed oversize/undersize
- Screening machine or filter-housing drawing
- Cleaning chemicals, method and frequency
- Destination-market food-contact and traceability documents
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