High Frequency Screen customisation for food industry

HIGH FREQUENCY SCREENS FOR THE FOOD INDUSTRY
CUSTOM-ENGINEERED BY SCREENNX FOR MATERIAL-SPECIFIC PARTICLE SIZE CONTROL

In the food industry, no two materials behave the same. Sugar, flour, starch, cocoa, dairy powders, spices, and fine ingredients differ widely in density, friability, moisture sensitivity, electrostatic behavior, and flow characteristics.
For this reason, high-frequency screening cannot be standardized.

At ScreenNX, high-frequency screens are custom-designed around the exact material to be handled, not adapted from generic designs. Every screen is engineered by translating material behavior and PSD targets directly into mechanical design parameters.

WHY GENERIC HIGH-FREQUENCY SCREENS FAIL IN FOOD APPLICATIONS

Many high-frequency screens in the market are designed for minerals or aggregates and later repurposed for food powders. This approach leads to:

• Excess fines due to crystal breakage
• Broad and unstable particle size distribution
• Blinding and reduced open area
• Poor flowability and downstream caking
• Hygiene and cleaning limitations

ScreenNX addresses these issues by designing material-specific high-frequency screening systems from first principles.

WHAT IS HIGH-FREQUENCY SCREENING AND WHY IT MATTERS FOR FOOD POWDERS

High-frequency screening uses high vibration frequency with low amplitude to improve fine particle separation while minimizing particle damage.

In food processing, this delivers:
• Sharper particle size cut
• Narrower PSD span
• Better control of fines (D10)
• Stable median size (D50)
• Controlled oversize (D90)

ScreenNX does not apply fixed frequencies. Each system is tuned based on the mechanical strength and surface properties of the food material.

SCREENNX CUSTOM DESIGN PHILOSOPHY – MATERIAL FIRST, MACHINE SECOND

Every ScreenNX high-frequency screen begins with material characterization, not machine selection.

• Particle size range and target PSD
• Particle shape and crystal fragility
• Bulk density and flow behavior
• Moisture and hygroscopicity
• Abrasiveness and stickiness
• Throughput and operating hours

These inputs determine every design decision that follows.

CORE DESIGN CRITERIA IN SCREENNX HIGH-FREQUENCY SCREENS

Instead of fixed vibration settings, ScreenNX engineers:
• Frequency range matched to particle size sensitivity
• Low-impact amplitude to prevent fracture
• Controlled acceleration (G-force) based on material strength

This ensures efficient classification without fines generation, a key differentiator from conventional high-frequency screens.

Screen inclination is a critical but often overlooked factor in PSD control.

Low Inclination (0–6 degrees):
• Longer particle residence time
• Maximum fines recovery
• Narrow PSD span
• Best for sugar fines, powdered sugar, starch, dairy powders

Medium Inclination (6–12 degrees):
• Balanced throughput and separation
• Stable D50 with acceptable capacity
• Used for flour blends and mixed food powders

High Inclination (12–20 degrees):
• Short residence time
• Higher throughput but coarser cut
• Used selectively for coarse screening or dewatering

ScreenNX selects inclination based on required cut sharpness, not just capacity.

ScreenNX selects screen media based on:
• Target aperture accuracy
• Blinding tendency
• Cleaning requirements
• Wear life

Available options include:
• Precision woven wire mesh
• Perforated stainless steel plates
• Modular polyurethane panels
• Chemically bonded fine mesh
• Self-cleaning and anti-blinding media

Deck length and effective open area are engineered to achieve multiple separation opportunities without over-screening.

MATERIALS OF CONSTRUCTION (MOC) – FOOD GRADE BY DESIGN

All ScreenNX high-frequency screens are designed for food industry compliance.

• 304 or 316L stainless steel
• Electropolished or fine-finished surfaces
• FDA and EU food-contact compliant elastomers
• Hygienic fasteners and seals

• Minimal dead zones
• Smooth internal geometry
• Easy access for washdown
• CIP-ready designs where required

This ensures compliance with FDA, EFSA, FSSC 22000, and GMP standards.

SCREENNX HIGH-FREQUENCY SCREEN TYPES

• Near-horizontal design
• Maximum effective screening area
• Tight PSD control with minimal fines

Applications: powdered sugar, starch, cocoa, milk powders

• Medium inclination for balanced performance
• Higher throughput with controlled PSD

Applications: flour blends, spice mixes, protein powders

• Flat deck for fine separation
• High-frequency motion for stratification
• Excellent for multi-grade classification

Applications: sugar refining, multi-stage food processing lines

• Combination of elliptical motion and high frequency
• Improved stratification and reduced blinding
• High capacity with precise control

Applications: high-throughput food powder plants

WHAT MAKES SCREENNX STAND APART FROM THE CROWD

ScreenNX is not a catalog supplier. It is an engineering-driven screening specialist.

What sets ScreenNX apart:
• Custom design based on material behavior
• PSD-driven engineering, not generic sizing
• Tuned vibration systems for food powders
• Hygienic construction built into the design
• Proven control of fines, flow, and caking

Particle size distribution is controlled by design, not corrected by rework.

MEASURABLE PERFORMANCE OUTCOMES

ScreenNX high-frequency screens deliver:
• Narrow and stable PSD
• Reduced fines and dusting
• Improved downstream flowability
• Reduced caking and lump formation
• Higher yield and lower product loss
• Long-term mechanical reliability

High-frequency screening in the food industry demands more than high speed. It requires deep understanding of material behavior and purpose-built engineering.

By designing every high-frequency screen around the specific food material to be handled, ScreenNX delivers precision, hygiene, and consistency that generic screening solutions cannot match.

When particle size distribution matters, customization is not optional—it is essential.