The chemical company representative should visit the laundry at a minimum of

The chemical company representative should visit the

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The chemical company representative should visit the laundry at a minimum of every two weeks and conduct wash piece tests. This is to measure the ph level of the wash cycles and to review cleaning, disinfection and whiteness of the linen. Many chemical companies use the W.A.T.C.H . principle when checking the wash cycles. WATER – to measure water levels and the quality of the water. AGITATION – to review the mechanical action of the machine. TIME – necessary for chemicals to work. It is important to review the timing of each process of the wash cycle so that the chemicals stay in the wash long enough to allow them to work. CHEMICALS – the selection of the correct chemicals is extremely important to enable all linens to be washed to an acceptable standard for all parties whilst ensuring they do not prematurely age the linen. HEAT – the activity of many chemicals is increased when the temperature of the water rises. It is important to check the temperature of the water. The wash cycle There are several stages of the wash cycle and this does vary depending upon which items are being washed. The stages of the wash cycles are: PRE-WASH OR BREAK – This is the first cycle of the wash and one of the most important. Alkalis are added to the wash with a high water level at low temperature (15-20C) to wet the linen and neutralise the soil. SUDS OR MAIN CHEMICAL WASH (there may be several suds cycles depending on the degree of soiling). This is the cycle where detergents are added to wash the linen. Water levels are low to medium to maximise mechanical action and increase the efficiency of the detergents. Water temperatures vary between 75 – 85 C. This is the longest part of the wash cycle BLEACHING – Bleach is used for removal of stains and is effective in the sanitising process. Bleaching also helps to whiten the linen. Higher temperatures accelerate the bleaching process. Water temperatures vary between 60-70 C RINSING – Rinsing is the process that is designed to remove all suspended soils and residual chemicals from the linens being laundered. There may be several rinse cycles where antichlors are added to one on a high water level. High water
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levels will dilute any residual chemicals left in the linen. Rinsing takes only a few minutes SOURING – A weak acid solution is added to the final rinse which will neutralise any residual alkalis. SORT ITEMS FOR DRY CLEANING/WASHING Once items have been received, checked and marked they are sorted into categories for processing. It is important that all care labels on all garments be read when doing so. Categories for sorting Items are sorted for: Washing - Dry Cleaning - Press only Washing Items for washing are then sorted into: Whites - Colours - Dark colours - Delicate items. Dry cleaning Items for dry cleaning are then sorted into: Light colours - Dark colours - Lighter weight - Heavier weight.
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  • One '19
  • Washing, Chemical industry, Laundry

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