Linen Conveyor and Trolley Systems in Industrial Laundry Plants — Stalwart Engineering
About the Role of Linen Conveyor and Trolley Systems
Plant design for linen conveyor and trolley systems in industrial laundry plants is crucial for efficient throughput. The systems that move linen between machines determine whether the machines run at capacity or sit waiting for the next load.
Industrial Laundry Process
A central laundry processing 2,000 kilograms of linen per shift moves that material through a sequence of stages: receipt at the soil bay, sorting by type and soil level, weighing for batch formation, loading into washing machines, transfer to extraction and drying, finishing (ironing or folding), sorting by ward or room, bagging, and dispatch to the clean linen store or direct to the user department.
Soil and Clean Zone Separation Principle
Every industrial laundry must maintain a strict physical separation between the area where soil linen is received and handled and the area where clean linen is processed and stored. This separation requires that air flow, personnel movement, and material handling systems enforce a one-way progression from soil to clean.
Soil Linen Trolleys and Receipt Systems
Soil linen arriving from user departments is typically transported in laundry bags inside wheeled cage trolleys or sack trucks. The standard equipment at this stage is the stainless steel or galvanised steel linen cage and a weighing platform or hanging scale.
Monorail and Overhead Conveyor Systems
The most efficient solution for moving linen within the laundry between the sort area, washing machines, and finishing section is an overhead monorail system. Garment bags or stainless steel sling bags hang from trolleys that run on an overhead rail fixed to the ceiling structure.
Conveyor Systems for Tunnel Washer Output
Tunnel washer installations require integrated conveyor systems as an inherent part of the machine design. The tunnel washer continuously discharges batches of wet linen at intervals of two to four minutes from the press extractor at the clean end.
Clean Linen Sorting and Dispatch Conveyors
After finishing, clean linen must be sorted by destination before packing. A powered sort conveyor automates the initial sort by moving finished items past a series of marked drop points. Operators at the start of the conveyor scan a barcode or RFID tag on each item; the system then diverts it to the correct chute or shelf position downstream.
Equipment Maintenance Considerations
Linen handling equipment in laundry environments is subject to moisture, detergent carry-over, and lint accumulation. Trolley wheels and bearings require periodic cleaning and lubrication; wheels with sealed bearings are preferable to open-bearing wheels in wet environments.