Tunnel washer

Part of a tunnel washer where linen is entered

A tunnel washer, also called a continuous batch washer, is an industrial laundry machine designed specifically to handle heavy loads.

The screw is made of perforated metal, so laundry can progress through the washer in one direction, while water and washing chemicals move through in the opposite direction. Thus, the linen moves through pockets of progressively cleaner water and fresher chemicals. Soiled linen can be continuously fed into one end of the tunnel while clean linen emerges from the other.

At the start, one of the machine's major drawbacks was the necessity of using one wash formula for all items. Modern computerized tunnel washers can monitor and adjust the chemical levels in individual pockets, effectively overcoming this problem.

Laundry

List of laundry topics

Chemicals	Biological detergent Bleach Fabric softener Laundry detergent

Washing	Combo washer dryer Wet cleaning Dry cleaning Tunnel washer Washboard Washing machine

Drying	Clothes dryer Clothes horse Clothes line Drying cabinet Hills Hoist Mangle

Finishing	Box mangle Clothes hanger Ironing

Concepts	Colour fastness Fulling Ironing Posting Shrinkage Stain

Organizations	Chinese Hand Laundry Alliance French laundries of California Laundry and Dry Cleaning International Union Laundry Workers Industrial Union Project Laundry List Worshipful Company of Launderers

Culture	Dhobi Housekeeping Industrial laundry Laundry symbol

Accessories	Clothespin Dispensing ball Hamper Laundry ball Washing paddle

Law	Barbier v. Connolly Kimball Laundry Co. v. United States Muller v. Oregon Pearson v. Chung Yick Wo v. Hopkins

Places	Baths and wash houses in Britain Dhobi Ghat Laundry room Lavoir Self-service laundry Tvättstuga

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Tunnel washer

See also