R+F FilterElements

Product Series

RF-FBD Series — Fluid Bed Dryer Fabrics

Precision air distribution fabrics for fluid bed dryers, granulators, and coaters. Controlled permeability, antistatic options, and materials compliant with FDA 21 CFR for pharmaceutical and industrial applications.

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Multi-finger fluid bed dryer bag with antistatic fabric for pharmaceutical granulation

Series Overview

The RF-FBD Series provides air distribution and product retention fabrics for all types of fluid bed processors. The fabric sits at the base of the product bowl, distributing heated or cooled air uniformly through the powder bed while retaining fine particles. Precise air permeability control ensures optimal fluidisation without channelling or dead zones.

Multi-finger fluid bed dryer bag showing antistatic grid weave pattern

Controlled Airflow

Precise permeability

Antistatic Options

ATEX Zone 1/21

FDA-Grade Materials

Food & pharma grade

OEM Compatible

All major brands

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Key Features

Engineered for the specific demands of fluid bed processing.

Uniform Air Distribution

Tightly controlled air permeability ensures even fluidisation across the entire product bowl. No hot spots, no under-fluidised zones.

Fine Particle Retention

Calibrated pore sizes retain fine powder while allowing air to pass freely. Minimal product loss through the distribution plate.

Permanent Antistatic

Conductive stainless steel fibres woven into the fabric provide permanent ESD protection for ATEX-classified environments.

Temperature Stability

Dimensionally stable at inlet air temperatures up to 150°C. No shrinkage or permeability drift during extended drying cycles.

Easy Cleaning

Smooth monofilament surfaces resist product adhesion. Quick to clean between batches — essential for multi-product pharma facilities.

Validated Performance

We supply IQ/OQ documentation, material certificates, and air permeability test reports for pharmaceutical validation requirements.

Technical Specifications

Approximate values. Actual specifications depend on construction and application.

MaterialMax. Temp.Air PermeabilityWeightTypical Use
PET (Polyester)150 °C200–800 L/m²/s200–500 g/m²Standard drying, cooling
PA (Polyamide)120 °C150–600 L/m²/s180–450 g/m²Pharma granulation
PP (Polypropylene)100 °C250–900 L/m²/s150–400 g/m²Chemical, food processing
PET Antistatic150 °C200–800 L/m²/s220–520 g/m²ATEX zones, solvent drying

Independent manufacturer — no affiliation with the named companies. R+F FilterElements GmbH is an independent manufacturer of filter fabrics and filter elements. All manufacturer, machine and brand names on this page are used solely to describe the compatibility of our products with existing equipment. We are not affiliated with, endorsed by, authorised by or a licensee of the named companies, and we do not supply original spare parts. All trademarks remain the property of their respective owners.

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