Industry Exchange | Analysis of fabrics and reasons

The reasons for the ash and yellowing of the fabric

The emergence of ordinary gray phenomenon is usually due to the following reasons:


Deadly defective detergent or washing program

, Make the dirt from the fabric from the washing liquid again.


Bad water

The minerals contain are stranded on the grass.


Use the soft agent for excess

, Make the fabric refuse water and decontaminate difficulty, so that the formation is formed.

The emergence of ordinary yellowing phenomena is usually due to the high content of iron ions in the water supply.

According to the size of the iron content, corrective measures can include the use of iron treatment equipment with iron, or the amount of water treatment agent and acid agent during washing.

Sometimes you can see

The “zebra bar” phenomenon of cloth grass (a stack of clean folding stack


The fabric found that there is a bright and dark phenomenon), which is a prelude to ordinary back color


Increased inventory turnover

Some cloth grass is used frequently, while the other part of the cloth is used less. also,

Some other conditions can also cause obvious light and darkness of cloth grass

Phenomenon, such as the quality of cloth grass, different purchase time.

Causes of damage to fabrics

Check the damaged fabric carefully in order to determine the cause of the damage.

Physical damage

: The grass that is physical damage often has a clear pull mark, or a straight line, or a clamp (generally 90 °). It may be caused by physical damage.

The comparative intensity of the fabric can be torn and torn in other parts of the fabric. If the strength of the two different parts is the same, this proves that the damage is not caused by chemical reasons.

Chemical damage

: If chemical damage occurs, it usually forms a deterioration from small dots and small holes to irregular shapes. The chemical damage of 100%whole cotton products is usually a small hole or a slightly irregular hole. When a certain area of ​​damage occurs, a wide range of fabrics will cause losses. The parts affected by the damage of the fabric will become thinner and easy to tear, while the strength of the surrounding parts remains unchanged. When a large area is damaged, the phenomenon of dill will be very serious, shortening the service life of cloth grass. The polyester/cotton bunter fabric will show chemical damage with extremely thin, not hole eyes, and cotton fiber is destroyed and washed away. The more resistant to polyester fiber is preserved. The damaged site feels thin and nearly transparent, and ordinary damage will cause the entire fabric to become extremely thin, transparent and wrinkled. Because the splitting of cotton fiber in the process of natural aging is similar to ordinary chemical damage, the two are sometimes easy to confuse.

Causes of physical damage

If the damage indicates that it is physical damage, the grass is likely to contact the sharp metal corner in the washing process

Don’t think that this is always the phenomenon in the washing room, and it may be more that this physical damage phenomenon is occurring elsewhere.

If several similar cloth shows the same damage properties and parts, further clues can be considered. For example, several sheets are similar to the same part of the damage, and there should be no metallic angle on the bed frame; there are any metal parts loose in the place where the sheets are in contact with it;

If the overall part on the fabric is not as signs of fixed physical damage, the reason may be diversified

It may be that the laundry room slide pipe, laundry basket and even laundry drums have metal sharp edges.

If there is a wide range of wool edges on the fabric, this may be due to the friction or excessive rolling of grass in the washing cylinder, too low water level or drying in the dryer.


If you find a cracked mouth, you should carefully check the turntable of the washing machine or dryer. If there are sharp edges or burrs on these rotors, the fabric will appear.

Essence The simple way to check these rotors is to use a nylon tube to rub every surface on the surface of the wheel. It will easily find suspicious sharp edges or wool mouths. After discovering, the sharp edge or wool is flattened with a knife or a sand wheel.

Causes of chemical damage

If the appearance of fabric damage is chemical damage, it can be considered that the biggest possibility is caused by the bleach, but do not ignore the following possibilities: cloth grass has taken over sewage treatment agents, acid toilet cleaner or other room strong acid -base products Essence

Most fabric chemical damage is formed in the laundry room due to abuse of powder and liquid bleach. Except for testable drift stains, fabrics should not be exposed to concentrated chlorine drifting agents. When hand -handed chlorine drifts, they must be added when the cylinder is moved down. Solk into the water. Unless there is enough water in the washing machine rotor to effectively dilute the bleach, you must not add chlorine drifts first, and you must not directly fall the drift on the grass. When configuring the bleach soaking solution, the bleach and soap should be dissolved in advance, and then placed in the grass. It should also be remembered that whenever the staining agent is used, routine washing should be performed immediately after the removal of the stains, at least fully water to prevent the fabric fabric from contacting such concentrated products for a long time. The most direct proof of the closhi tensile strength damage is to find too much plush in the plush collector of the dryer, which shows the loss of fiber. In order to avoid reducing the intensity of tensile force, it is necessary to pay attention to: the concentration of chlorine drifting should not exceed 150 mg/L, and the bleaching temperature should not exceed 70 ° C. After the washing machine is heated with steam, it can be added to add chlorine drift. If the steam is placed directly in the chlorine drifting agent solution, it will cause the chlorine drifting agent to release instantly, causing a wide range of cotton fiber damage.

When using a acid agent, the pH value of the oxalization result should not be lower than 5. Before adding a acid agent, it is necessary to ensure that the chlorine drifting agent on the grass has been effectively cleaned through the water. When the pH value of the liquid washing is acidic, the chlorine residue will be released immediately, which is harmful to the fiber. In addition, as a safety precautions, the acidic and chlorine drifting agents must never be mixed. In addition to the chemical damage of the fabric, the chlorine drifting agent is released at this time, which will also cause damage to the human body.

The reason for the color of the fabric color or transfer

When encountering color fabric fabrics, pay special attention to the stability of dyes

Although most of the color fabric fabrics use quite stable dyes (except a small amount of sheets and curtains), they must be alert to some dyes unstable in the alkaline solution, some are unstable in acid solutions, and most of them are not in bleaching solution. Stability, even some are unstable in the water. They may be back in ordinary washing programs.

When washing color fabrics, it is recommended to use the following conventional steps


1. If the fabric fabric is new, you need to wash a few samples in the water. Especially those dark dyes are often released in the first washing.

2. After washing the “excessive dye” with water, put the grass sample in 0.1%-0.2%drifting solution and drift for a few minutes. Bychiasis should be completely avoided. Even though there is no large -colored phenomenon in the wandering soaking solution, the lowest concentration standard should be maintained when the drifting agent is actually used, because some fabrics will be degraded after long -term washing, and the dark fabric cloth is particularly the same.

It is important to remember that any dye loss is likely to be transferred to other white and color fabrics washed on the same machine. In order to avoid such accidents, it should

Adhere to the separation of color fabrics, dark fabrics (especially red and blue) distinguished from light -colored items (such as pink, yellow, etc.)


Dyeing fabrics During the effective life period, the concentration of dyes will gradually consume

Essence Sometimes, you can only notice this when joining the new cloth, because the new and old one can see the difference. This color loss is a natural aging process caused by physical and chemical reasons during washing. Therefore, the colorful cloth grass has an indescribable warning mark. The chlorine drifting agent does accelerate the consumption of the pigment. However, sometimes the color loss caused by good bleaching and bleaching may make the strong drift -free decline.




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