Tunnel washer

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Part of a tunnel washer where linen is introduced Tunnel washer, input end.jpg
Part of a tunnel washer where linen is introduced

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

Washing machine Wash clothes automatically

A washing machine is a home appliance used to wash laundry. The term is mostly applied to machines that use water as opposed to dry cleaning or ultrasonic cleaners. The user adds laundry detergent which is sold in liquid or powder form to the wash water.

Laundry process of washing textiles

Laundry refers to the washing of clothing and other textiles. Laundry processes are often done in a room reserved for that purpose; in an individual home this is referred to as a laundry room, Laundry in Australian English or utility room. An apartment building or student hall of residence may have a shared laundry facility such as a tvättstuga. A stand-alone business is referred to as a self-service laundry. The material that is being washed, or has been laundered, is also generally referred to as laundry.

The screw is made of perforated metal, so items 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.

Originally, 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.

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