Why do some clothes shrink after washing?

The clothes will elongate under the stretching effect during processing, and then fix them after heat setting, and when you wash them, the internal stress relaxation will return to the original size, and it will shrink.

When the fabric is wetted, water molecules will enter the inside of the cotton fiber, causing the fiber to expand, and when the weft (or warp) direction of the fabric expands and becomes thicker, the fabric will shrink.

Why do clothes shrink? First of all, clothes are generally made of warp and weft yarns, when the yarn absorbs water, there will be different degrees of expansion, resulting in an increase in fiber diameter, so the shrinkage of clothes is caused by the clothes absorbing water.

The fabric is made up of fibers, so the fibers will undergo irreversible anisotropic expansion after washing, resulting in the size of the fibers becoming smaller.

Because the fabric shrinks when it sees water, and if we don't smooth it out, the garment will shrink.

I think a lot of clothing materials, in fact, if they are very good, they will not shrink, if they are shrinking, it may be because the material is not good enough, or it is relatively cheap.

Because the material of individual clothes is different, there will be some shrinkage after he enters the water, but it is not tight.

I think it's because of the fabric, some clothes shrink more and more when washed, and some clothes get looser and looser the more you wash them.

Because the material of my clothes must not be very good, and then it will shrink when I put it in the washing machine.

Clothes shrunk after washing and changing back to the method:

Add a large amount of warm water to the basin, add a few drops of baby shampoo or conditioner, stir thoroughly, soak the shrunken clothes in water and soak for about five minutes. After that, remove the garment, wring out the excess moisture on the garment, and then spread it flat on a dry towel, rolling the towel and the garment together. After waiting for a few minutes, take the garment out and stretch it to the right size.

The main reason for the shrinkage of clothes is the structure and nature of the fabric fibers. The better the moisture absorption of the fabric fiber, the greater the shrinkage; The tighter the fabric structure, the higher the shrinkage. In addition, the fabric is subjected to a series of mechanical stretching and compression during the production process, resulting in deformation, once washed with water, the fiber and yarn are subjected to the action of damp heat, and the deformed part will recover rapidly, resulting in the shrinkage of the clothes.

When the wool or cashmere clothes shrink, you can add an appropriate amount of white vinegar to the water, stir evenly, soak the wool or cashmere clothes in the solution for 25 minutes, stretch them several times, rinse them and wring them out. Then roll the clothes with a towel for about 10 minutes, take out the clothes and lay them flat to dry.

Ways to prevent clothes from shrinking:

1. When buying clothes, try to buy clothes with quality assurance. In general, the worse the quality of the garment, the worse the workmanship, and the more severe the shrinkage.

2. Before washing clothes, carefully check the label of the clothes and choose the appropriate washing method according to the composition of the clothes.

3. Before the clothes shrink, they should not be soaked for a long time, nor can they be soaked in low-temperature water and room temperature water. And after the cleaning is completed, it cannot be hung to dry.

4. The water temperature for washing clothes is too high and will destroy the shrinkage of clothes, so the water temperature for washing clothes should not exceed 30 degrees.

5. Choose wool clothes for dry cleaning. If hand or machine wash is required, a softener needs to be used during the cleaning process to prevent severe shrinkage of silk detergent or wool fabrics.

6. If there is a slight shrinkage of clothes, you can use an electric iron to iron, which can help the clothes to return to their original shape, and can also prevent the clothes from shrinking during the subsequent cleaning process.

This is mainly related to the fabric of the clothes, and the main reasons for the shrinkage of the clothes are as follows:

1。The clothes will elongate by the tensile action in the process of processing, and then fix them after heat setting, and when they are washed, the internal stress will be loosened and the silver pine will return to the original size, and it will shrink.

2. The composition of the fabric is fiber, and the fiber source Zheng Wei will irreversibly anisotropic growth after washing, resulting in the size of the fiber becoming smaller.

3. There is also a problem of fleece shrinkage in wool products, because there are scales on its surface, so it will shrink and deform.

Because clothing fabrics are generally made of warp and weft yarns, when the yarn absorbs water, there will be different degrees of expansion, resulting in an increase in fiber diameter. If the diameter of the weft yarn increases, the warp yarn must increase the length in order to maintain the state of the weft yarn.

When it dries naturally, the fabric retains its shrinkage form due to friction between the fiber yarns, which restricts the free movement of the yarns. After the fabric is dried, the area is often reduced, the thickness is increased, and the surface is uneven.

After the garment absorbs water and expands, the yarn diameter becomes larger, the yarns are closer to each other, and the fiber flexion rate increases. A portion of the yarn length is consumed on the curved part, which causes the fibers to shrink and become smaller. After the clothes are dried, it is difficult to return to their original state under natural conditions due to the presence of friction.

We have a lot of clothes that shrink after washing, especially cotton clothes. Why do some clothes shrink after washing?This is because these fabrics are woven from natural fibers, and they will be stretched by some machinery during the production and processing process, and the natural fibers are stretched and elongated, and the arrangement of fiber molecules becomes very loose.

Because of the large distance between the fiber molecules, once washed by water, the water molecules will invade the fiber molecules, causing them to swell and thicken, and their length will become shorter. Because the fiber structure has been deformed, the clothes will shrink and become smaller when they are dry. The shrinkage rate of different fibers is not the same, generally cotton, wool, silk, linen and other fabrics have a large shrinkage rate, you can use soap or laundry detergent to wash this kind of clothing, and it is best to wash it by hand, and lay it flat when drying to prevent stretching and deformation.

In fact, as long as it is fabric, it will shrink, but the degree of shrinkage is different. There is a word to explain specifically, which is shrinkage. Shrinkage refers to the percentage of shrinkage of a fabric after washing or immersion in water.

So the types of fabrics we usually use, each'What is the shrinkage rate? Cotton products are 4% to 10%, chemical fiber is 4% to 8%, cotton polyester is to, natural white cloth is 3% to 4%, wool blue cloth is 3% to 4%, poplin is 3% to, flower cloth is 3% to, kata gabardine is 4% to, twill cloth is 4%, clam (high-grade wool fabric) is 3% to 4%, labor cloth is 10%, rayon is 10%. Then we can roughly know that the shrinkage rate of synthetic fibers is the smallest, followed by cotton and linen fabrics, silk fabrics shrink greatly, and viscose fibers, rayon, and artificial wool fabrics have the largest shrinkage.

Since so many fabrics will shrink, how can we buy clothes in the future? In fact, there is no need to worry, as long as the shrinkage rate is in the range of 3% to 4%, you can buy and wash with peace of mind.