How to clean the hotel tablecloth

How to wash hotel tablecloths to remove dust and yellow

Water-washed linen fabric is rinsed with water at high speed.

After dehydration, although most of the alkaline detergents remaining on the fabric are removed, some alkaline substances will inevitably remain on the fabric. During the drying process of fabric, with the evaporation of water, the concentration of trace alkali remaining in the fabric will increase, which will not only damage the fabric fibers, stimulate human skin, but also turn the fabric gray and yellow. Due to many factors, such as excessive water quality, deposition of calcium and magnesium salts, high iron content in water, excessive alkali content in detergent, residual chlorine bleach on fabrics, insufficient rinsing and so on. , but also make the unwashed fabric gradually turn gray and yellow.

In order to overcome the above defects and deficiencies, the washed fabric needs to be washed and dehydrated at high speed, and then neutralized with acidic reagents containing acidic components. It can not only make the fabric neutral, but also use acidic components and complexes in the acid agent to complex metal ions such as iron in water to remove alkali scale and other acid-soluble dirt on the fabric and remove residual chlorine bleach on the fabric, thus reducing or delaying the ashing and yellowing of linen fabric after washing.

As we all know, the last process of towel fabric washing is softening, and the last process of tablecloth and oral fabric washing is sizing. However, the softener can only be absorbed by the fabric under acidic conditions, thus producing ideal softness and antistatic effect. Similarly, sizing should also be carried out under neutral or weak acid conditions. In this way, peracid neutralization is also the preparation for softening or sizing the washed linen fabric.

When the washed linen fabric is neutralized by acid, it is necessary to properly control the water level and warm water treatment time. The amount of acid added depends on the PH value of the treatment solution, which is generally 5-6. Excessive use and low PH will reduce the strength of cotton fabric and affect its service life. Therefore, in order to save acid, the water level should not be too high and should be kept low when neutralized with acid. The water temperature should be controlled at about 40℃ according to the needs of acid dissolution, and the time is generally 3-5 minutes. Because chlorine bleaching will not only destroy fabric fibers under acidic conditions, but also overflow chlorine. Therefore, all washed linen fabrics bleached with chlorine should be fully added with water before neutralization with peracid to avoid excessive chlorine bleaching agent remaining on the fabrics.