# Bedding fabric knowledge encyclopedia

Question: What are warp and weft yarns?

Answer: All fabrics have length and width. The length parallel to the fabric edge is called the length of the fabric. The length of the fabric is the warp direction. The length perpendicular to the fabric edge is called the width of the fabric. The width is the fabric. The latitude. The warp yarns are called warp yarns, and the weft yarns are called weft yarns.

The fabric label similar to 60S*40S we usually see refers to the warp yarn* weft yarn, which means that the warp direction of the fabric is 60 yarns, while the weft direction is 40 yarns.

Question: What is the density of the fabric?

Answer: Density refers to the warp and weft density of a fabric, that is, the number of warp and weft yarns contained in a 1 square inch fabric. Such as: 200 yarns / 1 square inch, its warp direction is 110 yarns, and the weft direction is 90 yarns.

The higher the density, the lower the shrinkage of the fabric. Commonly used are:

plain weave

30S*30S generally has a density of 76*68 and 78*65

40S*30S generally has a density of 110*80 and 110*90

Twill

40S*30S generally has a density of 126*60 and 133*72

Satin

40S*30S generally has a density of 138*86, 133*95 and 140*90

40S*40S generally has a density of 140*100

60S*40S generally has a density of 173*124

60S*60S generally has a density of 172*143

Jacquard

40S*40S generally has a density of 133*88

60S*60S generally has a density of 190*124

Question: What is the shrinkage rate?

Answer: Shrinkage is the percentage of fabric shrinkage after washing or immersion in the fabric.

In general, fabrics with the lowest shrinkage rate are synthetic fibers and their blended fabrics, followed by wool, hemp, and cotton, and the largest are viscose, rayon, and artificial wool fabrics.

The national standard shrinkage rate is less than 4%. For example, the size of the quilt with a size of 200*230 cm is 192*222 cm after washing or immersion, which is in line with national standards. The shrinkage rate of the fabric is also a measure of the quality of the product.

It is related to the following factors:

The raw materials of the fabric are different, the shrinkage rate is different, and the more easily the water-absorbing fiber shrinks. If the viscose fiber has a water absorption rate of up to 13%, and the synthetic fiber fabric has poor hygroscopicity, the shrinkage rate is small, and it is viscose>cotton>polyester/cotton>polyester; the density of the fabric is different, and the shrinkage rate is also different. The lower the density, the greater the shrinkage rate; the thickness of the fabric yarn is different, and the shrinkage rate is also different. The thicker the yarn of the fabric, the greater the shrinkage rate; the weaving and printing processes of the fabric have different shrinkage rates. The medium and high-grade bedding products are made of high-density and high-density fabrics, which are pre-tensioned and pre-shrinked, and a certain proportion of shrinkage is reserved during sewing.

Question: What is plain fabric?

Answer: Plain weave is a weave of criss-crossing. During the weaving process, warp and weft are interlaced into a loop.

Because of the many interlacing points of the plain weave, the structure is firm and firm, and the appearance is flat, but compared with other fabrics, the hand feels harder. If the density of the plain weave is small, the length of the float is larger, the bending resistance is small, the fabric becomes soft, and the hand feels stiff. Also, because of the many interlacing points, its floating line is shorter than twill and satin fabric, and the gas permeability is relatively poor. The higher the density, the worse the gas permeability, so the low-grade bedding often uses a low-density plain fabric.

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