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Towels are very common due to their frequent use. Now we will give you an analysis of the reasons why the hotel towels are damaged and ash:
Analyze from the chemical aspect
1. Washing water requirements: PH value 6.5- 7; total hardness not exceeding 50ppm; iron not exceeding 0.1mg/L; manganese not exceeding 0.05mg/L. Calcium and magnesium in hard water have positive charge during washing, forming calcium Magnesium soap, deposited on the fabric, makes the white plants gray, loses luster, changes the color light, and seriously causes the fibers to become brittle, broken, and low in fastness.
2, the washing water is not clear, the formation of chemicals remaining in the towel fiber. Alkaline chemical residue. Although alkaline chemicals are safe for cotton fibers during the washing process, they do not damage the fibers of the towels. However, if the water is too clear, the alkaline detergent will remain in the towel fibers. After the towels are dried, the towels will be grayed out. Hardens and softness decreases. As we all know, the use of towels and tablecloths and sheets is completely different. Tablecloths and sheets are used under static conditions, while towels are used under dynamic conditions. Frequently twisting and twisting requires towels to be soft, any The reason for the hardening of the towel may reduce the fastness of the towel.
3. Residue of chlorine bleaching agent. Chlorine bleaching agent is a kind of oxidizing agent which is strong in washing chemicals. Its bleaching function can remove the pigment on most cloth parts during rinsing, but it will cause some damage to cotton fiber. In the reasonable amount of delivery, the pH value of 10.5 is controlled below 70 degrees, which is relatively safe and normal. However, when the dosage and temperature control are not proper, the chlorine bleach residue is formed. For the fabric, the damage is unquestionable. It is best to use oxygen bleach to reduce damage to plants. The hotel laundry room can be washed regularly with a rich ion detergent. It can extend the life of hotel towels, reduce hotel towel loss and save energy.
4. Neutralizer is the chemical placed in the last procedure in the normal washing process. After the release, it can neutralize the previous washing procedures and a small amount (≤10ppm) of alkaline chemicals and chlorine remaining in the cloth after passing the water. Bleach and dissolve some metal ions in the water. The correct dosage can adjust the PH value of the cloth between 5.5 and 6.5. It is basically consistent with the PH value of the human body. It is safe. The towel fabric will still be in the normal service life, but it is not suitable for large-scale use. The agent will make the fabric acidic, thereby reducing the fabric fastness.
Hotel Cotton Towel - Nightmare Towel (43)
Analyze from the physical aspect
1, towel washing time is too long
When the towel is washed in the washing machine, most of the time it is constantly rubbed up and down, resulting in a rubbing and rubbing movement, which is an important factor in washing the towel. Because the dirty towel is only washed in the washing liquid, it can not be washed. This kind of exercise not only plays the role of washing the towel, but also wears the fiber and reduces the fastness of the towel. Therefore, reasonable washing time is very necessary. It reduces unnecessary wear and thus ensures a normal wash life of the towel.
2, the speed of high desorption during dehydration is too high
Part of the auto-elution machine has a high desorption speed and the dehydrator speed is too high. Excessive centrifugal force causes the towel cotton fibers to be loosened, just as we use excessive force when weaving the towel by hand, so that the woven structure is loose, which causes the middle part of the towel or the whole to be loose and damaged, and the normal damage starts from the side.
3, the temperature does not exceed 80 degrees when drying, 80% dry plus cold wind dropped to 40 degrees
Some dryers have broken cold air, which will cause the towel to dry excessively. Since the moisture intensity of cotton fibers is higher than the dry strength, drying too much will cause the towel fastness to drop. If the towel is overheated, it will cause the fiber to become brittle and the strength of the towel will drop significantly.