Knowledge of denim fabrics, jeans are a kind of pants that we are all familiar with. Many people wear jeans because they are very fashionable and beautiful, but many people don't know their materials. Let's take a look at the knowledge of denim fabrics.

Knowledge of denim fabrics 1 advantages:

Strong hygroscopicity-cotton fiber is a porous substance with irregular internal molecular arrangement and a large number of hydrophilic structures in the molecules.

Warm keeping-cotton fiber is a poor conductor of heat, and its cavity is full of stagnant air.

Comfortable to wear-no static electricity, good air permeability, hypoallergenic and easy to clean.

Disadvantages:

Easy to wrinkle-cotton fiber has poor elasticity.

High shrinkage-cotton fiber has strong water absorption. When it absorbs water, cotton fiber expands, causing cotton yarn to shorten and deform.

Molding-In wet state, cotton fiber will decompose into its favorite nutrient-glucose when it meets bacteria or fungi, which makes the fabric moldy and deteriorated.

If cotton fiber is exposed to the sun for a long time, its strength will decrease and the fiber will become hard and brittle. If it comes into contact with oxidant, bleached B powder or oxidizing dye, its strength will also decrease and the fiber will become brittle and hard.

It can be washed by machine or by hand, but due to the poor elasticity of fiber, it is best to wash it lightly or without strong hand washing to avoid the deformation of clothes and affect the size.

It is best to wash cotton fabric with cold water to keep its natural color. Except white cotton fabric, it is best not to use detergent or washing powder containing bleaching ingredients for shirts of other colors to avoid discoloration, and it is also not allowed to pour washing powder directly on cotton fabric to avoid local discoloration.

Wash dark shirts and light shirts separately.

Dry clothes: after taking off clothes, they should be leveled and dried quickly to reduce wrinkles.

Ironing: high temperature resistance, the highest temperature can be as high as 200 C.

Knowledge of Denim Fabric 2 1, Denim Fabric Ring Yarn Denim

With the development and application of new technologies and equipment such as ring spinning with high speed, large package, fine winding and no knot, the shortcomings of short spinning length, low production efficiency and many knots have been solved. The situation that denim yarn is replaced by air-spun yarn is changing rapidly, and ring spun yarn is likely to make a comeback.

Because ring spinning denim is superior to air spinning denim in some properties, such as hand feeling, drape, tear strength and so on. Moreover, it is also influenced by people's psychological return to nature and the pursuit of the original development of cowboy style. More importantly, the surface of ring spinning jeans will show a hazy slub style after grinding and washing, which meets the individual needs of today's jeans. In addition, slub yarn denim is very popular in the market at present, and ring spinning slubs can spin shorter and denser slubs, which also promotes the development momentum of ring spinning denim.

2, denim fabric slub cowboy

When slub yarns with different yarn numbers, different slub thicknesses (compared with the base yarn), different slub lengths and pitches are designed, and slub yarns are arranged in single warp direction or single weft direction and warp and weft direction, and are properly arranged with ordinary yarns with the same number or different number, various slub denim can be produced, and various hazy or clear striped jeans can be formed after washing, which is welcomed by consumers with personalized needs.

3. Denim weft elastic denim

With the adoption of spandex elastic yarn, denim varieties have developed into a new field, which can make denim clothing close-fitting and comfortable, and then match with slubs or different colors, making denim products more suitable for fashionable and personalized consumption needs, thus having great development potential. At present, elastic denim is mostly weft elastic,

The elastic elongation is generally 20% ~ 40%, depending on the weave design of the fabric. The smaller the warp and weft tightness on the loom, the greater the elasticity. On the contrary, when the warp knitting tightness is fixed, the greater the weft elastic yarn tightness, the smaller the elasticity, and the weft tightness reaches a certain level, or even loses elasticity.

4. Denim with special colors

Because the clothes made of super indigo dyed denim or super deep indigo dyed denim can get rich and bright colors after polishing and washing, they are widely welcomed by consumers. "Super indigo" dyed denim has two characteristics: extremely deep dyeing depth and excellent color fastness to rubbing and washing.

The former means that the amount of indigo dye dyed on yarn per unit weight (generally expressed as% of yarn dry weight, called% of dyeing depth) is extremely large. For example, the dyeing depth of conventional denim warp is 1% ~ 3%, while the dyeing depth of "super indigo" needs to reach more than 4% to be called super indigo or super deep indigo.

The latter means that "super indigo" dyed jeans need to be washed repeatedly for more than 3 hours, and their color depth can still reach or exceed that of conventional dyed jeans without washing, and their color light is much brighter than that of conventional dyed jeans. For indigo dyed denim, its essence depends on the penetration degree of the dye into the yarn, not the abrasion fastness of the dye itself (the wet abrasion fastness of indigo is only 1), that is, the better the penetration degree, the better the abrasion fastness.

Knowledge of denim fabric 3 What is the fabric of jeans?

Jeans generally use indigo water mill fabrics, such as denim and beef tendon denim. Denim is a kind of coarse-colored warp twill, with dark warp yarns, generally indigo and light-colored weft yarns, generally light gray or boiled white yarns. There are also fabrics such as suede, corduroy and velveteen.

Jeans have always been wear-resistant, and the quality is much better than ordinary pants. Deeply loved by young people, it is comfortable to wear. Everyone will have a pair of jeans in their closet. Jeans first appeared in the western United States. They were once popular with local miners and cowboys, and they are still very popular today.

Jeans can be described as immortal stars all the year round, and are listed as "the first of all-purpose clothes". Jeans can be matched with any clothes, showing a casual style. Jeans are suitable for people of all ages, no matter how old they are.

What are the advantages and disadvantages of jeans?

The advantage of jeans is fashion, but the disadvantage is fading and deformation. In good brands, jeans will fade, including top brands in the world. Now the most famous jeans brand is Levi's Lee CK. Prices range from six or seven hundred to more than one thousand, which is suitable for any type. People wear many styles.

The quality is really good. One day I bought more than 700 Li. I was a little distressed at that time, but the quality was really good. The fading is not bad It is very durable. If you want to wear it for a long time, you can buy light colors, such as light blue, or buy retro beggar pants. Even if it fades, it looks good. In fact, there is no need to brand jeans, as long as the quality is good. Generally, you can buy good jeans at a price of more than one hundred to two hundred. What we call the quality of jeans,

Mainly refers to its internal quality, usually has nothing to do with brand and style. The inner quality of a pair of jeans is mainly composed of fabric quality, pattern design, lathe quality, washing water quality and auxiliary material quality. Whether a pair of jeans is high-grade, in addition to exquisite workmanship and good design, the grade of fabric and washing water almost determines the grade of the whole pants.