How to divide the front and back of cotton and linen fabrics? Fabrics can generally be used to make different clothes. There are many kinds of fabrics, and different fabrics have different characteristics. There are also many common fabrics. Let's share how cotton and linen fabrics are divided into front and back.

How can cotton and linen fabrics be divided into front and back 1 1? According to the distinction of burrs, one side with burrs is in the warp direction and the other side is in the weft direction;

2. According to the direction of the fabric pattern, if the fabric has patterns, it can be distinguished according to this method;

3. According to the length of both sides, if the fabric you buy is rags, with no raw edges, and the fabric is large, you can use this method to distinguish it. Generally, the long side and more than two meters can be basically determined as the warp direction;

4. Pull both sides of the fabric. Generally, the inelastic side is in the warp direction, and the slightly elastic side is in the weft direction. This method of elastic fabric is not feasible.

Distinguish between positive and negative:

1, with patterns, according to patterns;

2, two sides can't tell, according to the small hole on the burr, the smooth side is the front, and the convex side is the back.

How to know cloth

After burning, cotton (paper burning smell) and polyester (induration and pungent smell after burning) can be separated, while wool and silk are the same after burning, but silk fiber is longer, more shiny and thinner, wool is thicker and fiber is shorter.

Nylon: polyester is a kind of synthetic fiber, which has lumps after burning and can be drawn into silk, and cotton becomes powder after burning.

Cotton cloth: it is the general name of all kinds of cotton textiles. Mostly used to make fashion, casual wear, underwear and shirts. Its advantages are easy to keep warm, soft and close-fitting, moisture absorption and air permeability. Its disadvantage is that it is easy to shrink and wrinkle, and its appearance is not crisp and beautiful, so it must be ironed often when wearing it.

Silk: A general term for all kinds of silk fabrics woven from raw materials. Like cotton cloth, it has many varieties and different personalities. It can be used to make all kinds of clothes, especially women's clothes. Its advantages are light, healthy, soft, smooth, breathable, colorful, shiny, elegant and comfortable. Its disadvantages are easy to wrinkle, easy to absorb, not strong enough and fast fading.

Chemical fiber: short for chemical fiber. This is a fiber textile made of polymer. Usually divided into two categories: man-made fibers and synthetic fibers. Their advantages are bright colors, soft texture, crisp drape, smoothness and comfort. Their disadvantages are poor wear resistance, heat resistance, hygroscopicity and air permeability.

It is easy to deform when heated and generate static electricity. Although it can be used to make all kinds of clothes, the overall grade is not high and it is difficult to be elegant. Chemical fiber has three advantages in the early stage of development: first, it is strong and durable; Second, it is easy to take care of and has the characteristics of anti-wrinkle and non-ironing; Third, industrial mass production can be carried out, unlike natural fibers, which occupy land, processing is time-consuming and laborious, and the output is limited.

Flax: It is a kind of cloth made of hemp, flax, ramie, jute, sisal and banana. Generally used to make casual clothes and work clothes, now it is also used to make ordinary summer clothes. Its advantages are extremely high strength, good hygroscopicity, thermal conductivity and air permeability. Its disadvantages are uncomfortable to wear and rough and stiff appearance.

Wool fabric: also known as wool fabric, it is the general name of all kinds of fabrics made of wool and cashmere. Usually suitable for making formal and high-grade clothes such as dresses, suits and coats. Its advantages are wrinkle resistance, wear resistance, soft feel, elegance, flexibility and warmth. Its main disadvantage is that it is difficult to wash and is not suitable for summer clothes.

How to divide cotton and linen fabrics into two sides? 1. plain fabric.

Plain weave fabric is woven with plain weave (warp and weft are interwoven with every other yarn).

There is generally no difference in appearance between the front and back of plain fabrics, and there is no obvious difference. So don't care too much when recommending to customers, you can judge by looking at the edge of the cloth when cutting.

Second, the yarn fabric

Yarn fabric (such as twill, yarn card, etc.). ) are all twill fabrics, and the diagonal path of the front twill is clear and obvious. The grain direction of the fabric surface is "Si ()" diagonal, while the reverse side of the fabric is plain weave.

Third, thread fabric.

Thread fabric (such as gabardine; Single-sided and double-sided khaki pants, etc. ) also belongs to twill fabric, with obvious positive and negative lines, but the positive direction is "left (/) oblique, and the negative direction is" left () oblique.

In wool fabrics and silk twill fabrics, the front faces are both "left (/) oblique" or "left () oblique", but attention should be paid to the clear lines when identifying, and a clear front face is the front face.

Fourth, satin fabrics.

Satin fabrics are generally divided into warp satin and weft satin. Satin, more satin in front; Weft satin, multi-weft satin in front.

At the same time, the front of satin fabric has a relatively flat, compact satin shape and is full of luster; On the other hand, the weaving on the reverse side is not obvious and the luster is dark.

Five, jacquard fabric

Jacquard fabric needs to identify the front and back of the fabric according to its jacquard pattern and stripe pattern. The stripes or patterns on the front of jacquard fabric are not only more obvious than those on the back, but also have clear lines, uniform luster and beautiful appearance.

Six, velvet fabric

Common velvet fabrics, such as plush, velveteen, corduroy, camel hair, etc. Generally, there is a fluffy side as the front.

Double-sided velvet fabric, with dense, plump and tidy side as the front.

It is worth noting that apart from the difference between front and back, cashmere fabric is more important to distinguish its yarn direction (up and down) and more for cutting.

Seven, look at the edge of the cloth.

Most custom-made shops will provide customers with samples of fabrics. If there are fabric details, you can judge whether the fabric is positive or negative by looking at the edge of the fabric.

Generally, the front of the hem is flatter than the back, and the edge of the back of the hem is curled inward.

Some fabrics (such as silk and wool) have patterns or characters on the edge, and the patterns or characters on the front are clear and smooth; While the reverse side is blurred.

If it is a cotton and linen fabric, there will be obvious pinholes on the edge of the fabric, with the pinholes on the front poking downwards and the pinholes on the back protruding upwards.

Eight, look at the factory seal

According to the national standard of "Printing and Dyeing Cloth Packaging and Labeling" (CB43 1-78 1), within 5cm of both ends of the reverse side of each piece or section of raw materials, the prototype factory seal should be stamped to show the reverse side of raw materials and show that they have passed the inspection. This factory stamp or number can also be used as an identification mark on the front and back.

Of course, in addition to the above identification methods, more observation, comparison and analysis are needed in practice to skillfully and accurately identify the front and back of various fabrics.

How to divide the front and back of cotton and linen fabrics? 3 1. Generally, the pattern color on the front of the fabric is clearer and more beautiful than that on the back.

2. Fabrics with checkered appearance and fabrics with color matching patterns must have clear and pleasant front patterns.

3, convex and concave fabric, the front is tight and delicate, with strips or patterns; The reverse side is rough and the floating line is long.

4. Raised fabric: single-sided raised fabric, with the raised side as the front. For fabrics with double fuzz, the smooth and tidy fuzz side is the front of the fabric.

5. Observe the edge of the fabric. The smooth and tidy side of the edge is the front of the fabric.

6. For double-layer and multi-layer fabrics, if the warp and weft densities of the front and back sides are different, the density of the front and back sides is generally higher or the raw materials of the front and back sides are better.

7. Leno fabric: the lines are clear, and the side where the warp yarns protrude is the front.

8. Towel fabric: The side with high terry density is the front.

9. Printed cloth: the pattern is clear, and the bright side is the front.

10, whole fabric: except for exported products, all instructions affixed with the factory inspection stamp are generally negative. There are obvious differences between the front and back of most fabrics, but there are also many fabrics whose front and back are very similar and both sides can be used, so it is not necessary to distinguish between the front and back of this kind of fabrics.

Identification of clothing fabric components

I. Cotton fiber and hemp fiber

Cotton fiber and hemp fiber burn as soon as they get close to the flame, which is yellow and emits blue smoke. The difference between the smell of burning and the ashes after burning is that cotton burns with paper flavor and marijuana burns with plant ash flavor; After burning, cotton has little powder ash, which is black or gray, while hemp produces a little gray powder ash.

Second, wool fiber and silk.

Hair smokes when it meets fire, bubbles when it burns, and burns slowly, giving off the burning smell of burnt hair. Most of the ashes after burning are shiny black spherical particles, which will be broken when a finger is pressed. Silk shrinks into a ball when it meets fire, and the burning speed is slow, accompanied by hissing, giving off the smell of burning hair. After burning, dark brown spherical ash is formed, which will be broken by hand twisting.

Three, nylon and polyester

Polyamide fiber, nylon in scientific name, quickly curls and melts into white gel when it is close to the flame, and drops and bubbles when it melts in the flame. When burning, it is difficult to continue burning without flame, emitting celery flavor, and the light brown melt is not easy to grind after cooling. Polyester fiber, the scientific name of polyester fiber, is easy to ignite and melt near the flame. When burning, it emits black smoke while melting, showing a yellow flame and emitting an aromatic smell. After burning, the ash is a dark brown lump that can be crushed with your fingers.

Four. Acrylic fiber and polypropylene fiber

Polyacrylonitrile fiber, the scientific name of acrylic fiber, softens and melts when it meets fire, and emits black smoke and white flame after fire. After leaving the flame, it burns quickly, giving off the bitter taste of burnt meat. The ash after burning is an irregular black block, which is fragile by hand twisting. Polypropylene fiber, the scientific name of polypropylene fiber, is flammable when it melts near the flame. It burns slowly away from the fire, emitting black smoke. The upper end of the flame is yellow and the lower end is blue, giving off a smell of oil. After burning, the ash is hard, light yellow-brown particles and fragile by hand twisting.

Verbs (abbreviation for verb) vinylon and chloroprene

Polyvinyl formal fiber, the scientific name of vinylon, is not easy to ignite and melts and shrinks near the flame. When it burns, there is a little flame at the top. When all the fibers melt into gel, the flame becomes bigger, thick black smoke comes out, and there is a bitter taste. After burning, small black beads will be left, which can be crushed with your fingers. The scientific name of PVC fiber is PVC fiber, which is difficult to burn. It goes out immediately after leaving the fire. The flame is yellow, and the lower end is green and white smoke, emitting pungent, pungent and sour taste. The burnt ash is dark brown and irregular, which is not easy to be broken by fingers.

Six, spandex and fluorine fiber

Polyurethane fiber, scientific name spandex, burns when it melts near a fire. When it burns, the flame is blue. When it left the fire, it continued to burn, emitting a special pungent smell. The burnt ash is soft and fluffy black ash. The scientific name of fluorine fiber is polytetrafluoroethylene fiber, and ISO organization calls it fluorite fiber. It only melts near the flame, but it is difficult to ignite and does not burn. The edge flame is blue-green carbonization, melting and decomposition, and the gas is toxic. The melt is hard round black beads. In the textile industry, fluorine fiber is often used to make high-performance sewing thread.

Seven. Viscose fiber and cuprammonia fiber

Viscose fiber is flammable, burning fast, the flame is yellow, giving off the smell of burning paper. After burning, the ash is less, smooth and twisted, and it is light gray or gray-white fine powder. Copper ammonia fiber, commonly known as tiger kapok, burns near flame, with fast burning speed, yellow flame and acid ester. There is little ash after burning, only a small amount of gray-black ash.