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Our engineering and technical personnel have found that most of the holes in the towels are irregular. When observed under a microscope, the brittle damage and discoloration areas show obvious mold growth on the fiber surface. Even after washing, the fiber mold colonies can still be detected. The brittle towels are stored in humid and hot, stuffy containers after washing or sweating, and the longer the storage time, the more serious the brittle damage. There are also new towels that break after being washed. These towels are unbleached towels with starch paste, and the starch paste is exactly the nutrient base for mold. Once the environment of humidity and heat is provided, the mold will rapidly reproduce and secrete enzymes, decomposing the fiber and starch into glucose. At the same time, the skin flakes in the sweat (including proteins, fats, amino acids, potassium, sodium and other inorganic salts) further promote the reproduction of bacteria and other microorganisms, releasing acidic substances, not only beneficial to the survival of bacteria, but also accelerating the hydrolysis of starch and fiber. Therefore, new towels that have been used or have not been washed away will become moldy and brittle in an environment of high humidity and poor ventilation.

Therefore, if you find that the towel has a sticky and slippery feeling accompanied by a foul odor, you should wash it with soap as soon as possible and hang it in a well-ventilated place to dry. Newly produced towels must be de-stapped, dried thoroughly, and cooled before being stored in packages. It is absolutely forbidden to store them for a long time in a humid and hot environment, to avoid mold growth.

3. How to Tell the Difference Between Good and Bad Towels

Firstly, visual inspection: The stitching of the towel is precise, the hemming is neat, the width is consistent, the horizontal and vertical lines are straight, there is no slant or twist, the tension is consistent, the hair is uniformly high, and the loop stands upright; when holding the towel with both hands and looking at it with both eyes, the loop is smooth and clean, with little cotton fluff leaking out, it is good. Colors that are pure and bright with no uneven depth or shade are preferred.

Second. Touch: A good cotton towel should feel fluffy, soft, and not slippery. It should feel soft and elastic in your palm, and when you pat it, there should be no cotton fluff falling off.

Third. Smell: A good towel should have no unusual odor. If it has a candle or ammonia smell, it indicates that the softener has been used excessively; if it has a sour smell, the pH value might be above the standard; if it has a pungent smell, it means that a fixative containing formaldehyde has been used, and free formaldehyde has been released.

4. Testing moisture absorption: Hang the towel and drip water onto it with your hand. If the water does not roll off, it indicates that the towel absorbs and spreads quickly, making it excellent in moisture absorption. If the water rolls off, it suggests that there is too much softener in the towel or that the refining process is insufficient.

Section 5. Colorfastness test: First, pour about 80-degree hot water into a basin, and then put the towel in to wash. If the water in the basin does not show any color, it is good; if there is any color loss, it indicates poor dyeing quality, which may be harmful to human health. According to Mr. Yang Donghui, the chairman of the China Home Textile Association, such towels are "washing your face with industrial wastewater."