Mercerizing


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Mercerizing

 

(from the name of the English inventor John Mercer, 1791-1866).

(1) A stage in the production of viscose; it consists in the treatment of cellulose with a concentrated aqueous solution of NaOH at 20°-60°C to produce alkaline cellulose. The process takes place in apparatus with periodic action (bath presses) or continuous action. A bath press is a metal tank in which the sheets of cellulose are pressed by a piston after treatment with alkali. The apparatus is designed for a load of 250-500 kg of cellulose; the operation cycle is approximately 2 hr. The output of a continuous mercerizing machine is usually 25 tons per day.

(2) The treatment of cotton fabrics or other cellulose fibrous materials with a concentrated aqueous solution of NaOH (usually at 15°-18°C) to add luster and increase dyeing capacity and strength. The process takes place on a machine that dips the material in the NaOH solution and then presses and washes it. Such machines have a device to stretch the fabrics, which shrink after treatment. Fabrics are mercerized in the unbleached state or after boiling or bleaching.

References in periodicals archive ?
Mercerizing plants in textile mills are used to mercerize desized / scoured / bleached / dyed yarn / knitted fabrics.
The Activa washing box comes from the vast experience of Mezzera in the field of washing box for various types of fabric, from the lightest to the coarser, and for many different application areas, such as washing after dyeing or a washing after mercerizing, etc.
The DNA markers will be designed to withstand extremely harsh textile processes including de-sizing, scouring, bleaching, mercerizing, dyeing, finishing, etc.
The DNA markers will be tested to ensure they can withstand extremely harsh textile processes including de-sizing, scouring, bleaching, mercerizing, dyeing, finishing, etc.
Only the patented DIMENSA mercerizing process fully utilizes the action of the alkali treatment on cotton.
These proprietary processes protect the DNA from adverse environmental conditions as well as many manufacturing processes such as de-sizing, scouring, bleaching, mercerizing, dyeing, finishing, etc.
It can be applied for washing after many wet finishing process, such as desizing, sourcing and bleaching, mercerizing, dyeing, printing and moist crosslinking.
The company believes its DNA markers will be able to withstand extremely harsh textile processes including desizing, scouring, bleaching, mercerizing, dyeing, and finishing, and will remain embedded in the fabric or yarn for more than 100 years.
The team of technologists and textile engineers will be present during the ITM so that interested customers can discuss every single aspect of the wet finishing process: From washing to waste water treatment and from dyehouse management systems to mercerizing.
It is believed the DNA markers will be able to withstand extremely harsh textile processes including desizing, scouring, bleaching, mercerizing, etc.
These features contribute several benefits to yarn and textile manufacturers because DOW XLA can be efficiently cone dyed; withstand severe dyeing, bleaching, mercerizing, and garment washing conditions; and tolerate the thermosol dyeing process using standard conditions.
In order to meet different process requirements, the development and production of continuous wet processing equipment by Goller include a variety of washing ranges, mercerizing machines and scouring and bleaching machines for cotton knitted fabrics.