Laminar Flow and Containment Equipment

Closed Restricted Access Barrier System

An enclosed RABS with controlled internal airflow, glove-access panels and interlocked doors that provides greater process separation than an open barrier.

Enclosed Glazed Barrier
Controlled Internal Airflow
Interlocked Access Doors
Glove-Port Interventions

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Product Introduction

The closed RABS forms a more complete enclosure around the aseptic process than an open RABS. Rigid panels, sealed lower interfaces and closed doors define the work zone, while filtered air is supplied and returned through the barrier system. Operators intervene through glove ports and use interlocked doors only for controlled setup or maintenance. The system is not automatically equivalent to a gas-tight isolator; its chamber leakage, cleaning and bio-decontamination approach depend on the selected construction.

Key Features

Closed glazed walls define a controlled internal process-air volume.

Supply and return modules manage airflow within the barrier enclosure.

Interlocked doors reduce simultaneous openings along the process line.

Glove panels support intervention while the main doors stay closed.

Sealed lower skirts connect the barrier to machine frames and conveyor openings.

Customer Product Concerns

A closed RABS must keep doors, machine interfaces and internal airflow coordinated without claiming the gas-tight performance of an isolator.

Room air enters through gaps around machine bases.Custom lower skirts and flexible seals close the interface to the equipment frame.

Multiple doors are opened during one intervention.Door interlocks and defined glove positions reduce unnecessary barrier opening.

Internal heat builds around the process equipment.Dedicated supply and return sections manage the enclosed air volume.

The enclosure is described as gas-tight without suitable construction.The page distinguishes closed RABS separation from pressure-tight isolator containment.

Typical Applications

Aseptic filling linesSterile closure handlingOpen product conveyor protectionBarrier retrofit around critical equipment

Technical Parameters

Typical configurable construction ranges for a closed restricted access barrier system are listed below.

Core Material	SUS316L modular barrier frame with laminated safety glass, CSM gloves and integrated supply-return plenums
Panel Thickness	40-80 mm framed barrier and airflow sections
Effective Width	1500-6000 mm protected line width
Maximum Length	Up to 25000 mm closed barrier length
Steel Facing Thickness	1.5-2.0 mm stainless lower skirts, doors and plenum skins
Core Density	Approximately 2500 kg/m³ for laminated safety-glass barrier panels
Thermal Conductivity	0.8-1.0 W/(m·K) for laminated safety glass
Surface Finish	Fine-brushed SUS316L with flush laminated glazing and sealed lower interfaces
Joint Type	Gasketed modular barrier joints with interlocked doors, sealed machine interfaces and return-air plenums
Customization	Available based on the intended application and operating environment.

Available Options

Active filtered recirculationInterlocked glove and service doorsAutomated door status monitoringIntegrated cleaning and environmental ports

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