The pH value of hotel linen exceeds the standard, and bed sheets can burn the face. After investigation, many hotels, whether they are affordable express hotels or high star luxury hotels, focused on testing the pH value of towels and bed sheets, and the results were surprising. Some hotel towels have a noticeable slippery and greasy feeling when touched by hand. Experienced room supervisors, managers, room directors, and general managers will immediately know that this is caused by not cleaning thoroughly. In this situation, the towel may appear normal to the naked eye after cleaning, but black areas may appear when exposed to sunlight, which is called "black clumps". The reason for "black clumps" is that the towel is not cleaned thoroughly multiple times, and dirt is adsorbed onto the woolen towel.
1、 The types and performance of laundry equipment used in different restaurants vary, therefore corresponding washing processes and procedures must be developed. The main technical parameters for formulating washing processes include washing time, temperature, speed, program, reasonable amount of detergent, and loading capacity. The washing process is also related to water quality, the condition of the washed object, washing chemicals, washing equipment, and the selection of water level.
2、 The textile materials used for washing items are different, such as all cotton, polyester cotton, polyester, etc., and different washing processes should be formulated according to different qualities. For example, the washing temperature of pure cotton and polyester cotton is different, and the main washing temperature of polyester cotton is different
3、 The quantity of washing items depends on the capacity of the washing equipment. In washing water containing a certain proportion of chemicals, adding an excessive or insufficient amount of washing items can affect the washing effect and the fastness of the items.
4、 Pay attention to selecting high-quality and suitable detergents, and prepare reasonable amounts for different washing objects and environments. If you do not distinguish the washing objects and use detergents indiscriminately, not only will it affect the washing effect, but in severe cases, it will also damage the textiles.
5、 Before washing, the items to be washed should be classified according to their intended use, such as tablecloths, bed sheets, towels, duvet covers, pillowcases, etc. Then, they should be classified according to the colors of similar items. Treating items of different colors together may cause mutual contamination, and the treatment methods for similar items of different colors are also different, especially for bleached and colored items that cannot be mixed together. It should also be classified according to the degree of dirt, generally divided into three categories: heavy dirt, medium dirt, and light dirt. The thickness and softness of bath towels, floor towels, hand towels, and face towels vary, and the degree of contamination varies. If mixed together for washing, it can easily cause excessive friction. Therefore, these four types of towels can be divided into three categories for washing: bath towels, floor towels, and hand towels and face towels.