Is leather leather or leather? What is the difference between leather and leather?

Leather is animal skin, through physical and chemical processing processes such as demeating, degreasing, hair removal, softening, fatting, tanning, dyeing, etc., to obtain products that meet the requirements of people's use purposes, referred to as leather.

Leather is made up of natural protein fibers tightly woven in three dimensions. The surface of the leather has a special grain layer, which has a natural grain and luster, and feels comfortable; It has the unique properties of natural materials: high mechanical strength, certain elasticity and plasticity, easy maintenance, good heat and humidity stability, corrosion resistance, excellent air permeability (steam), moisture absorption (sweat), and moisture removal performance.

According to the use, leather can be divided into: leather for life, leather for national defense, leather for industry and agriculture, leather for cultural and sporting goods; According to the tanning method, it is divided into: chrome tanned leather, vegetable tanned leather, oil tanned leather, aldehyde tanned leather and combined tanned leather.

In addition, it can also be divided into light leather and heavy leather. Generally used in shoe uppers, clothing, gloves, etc., called light leather, measured by area, light leather is between the surface of the inner fiber of the leather, add appropriate oil, so that the friction between the surface of the fiber in the skin is about equal to the friction of oil molecules, so that the leather will be very soft; The leather used for the inner and outer soles of leather shoes and industrial accessories is called heavy leather, which is measured by weight.

Question added: Is leather leather or leather? Leather is animal skin, which is composed of natural protein fibers tightly woven in three-dimensional space after defleshing, degreasing, hair removal and softening. There is a special grain on the surface of leather.

The differences are as follows:

1. The state is different.

Skin refers to the state in which the collagen fibers of the skin are still in their presence on the animal's body (referring to the chemical structure). Leather refers to the physical and chemical treatment of animal skins to remove useless components from the skin, and to change the chemical structure of the skin's collagen fibers to be different from the state in which it was on the animal.

2. The hardness is different.

Leather is soft and easy to bend in the dry state, and it is not easy to rot in the wet state, while leather is the raw material for tanning, and leather is made from leather. Synthetic leather feels like plastic, with poor recovery and elasticity, and the thickness of the folds is similar if it is bent. In the mildew-prone season, the surface of the leather is generally prone to mold, but the leather is not.

3. The smell is different.

Natural leather has a strong smell of fur, even after treatment, the taste is more obvious, while artificial leather, there is a taste of plastic, no smell of fur.

4. The combustion situation is different.

Smell the smell of burnt and look at the ashes, natural leather will emit a smell of burning hair when burning, the burned ashes are generally fragile into powder, and artificial leather, after burning, the flame is also stronger, shrinking rapidly, and there is a bad smell of plastic, sticky after burning, and will be hard and lumpy after cooling.

Classification of leather.

1. According to the use, it can be divided into leather for daily life, leather for national defense, leather for industry and agriculture, and leather for cultural and sporting goods.

2. According to the tanning method, it is divided into chrome tanned leather, vegetable tanned leather, oil tanned leather, aldehyde tanned leather and combined tanned leather. In addition, it can also be divided into light leather and heavy leather. The leather generally used for shoe uppers, clothing, gloves, etc. is called light leather, which is measured by area; The leather used for the inner and outer soles of leather shoes and industrial accessories is called heavy leather, which is measured by weight.

3. According to the animal species, there are mainly pig leather, cow leather, sheep leather, horse leather, donkey leather and kangaroo leather, etc., and a small amount of fish leather, reptile leather, amphibian leather, ostrich leather, etc. Among them, cow leather is divided into cattle leather, buffalo leather, yak leather and braided cow leather; Sheep leather is divided into sheep leather and goat leather.

Among the main types of leather, cattle leather and sheep leather, its surface is flat and fine, the hair eye is small, the internal structure is fine and compact, the leather body has good plumpness and elasticity, and good physical properties. Therefore, high-grade cattle leather and sheep leather are generally used as leather materials for high-end products, and their ** is a higher category of bulk leather.

4, according to the level of the first layer of leather and two layers of leather, of which the first layer of leather has full-grain leather and trim leather; There are two layers of leather for pigs and two layers of leather for cattle.

1. First of all, the smell of leather and leather is different, and the quality products with good treatment have no taste, and some will have a skin odor, while leather smells of chemical plastic, which is somewhat pungent.

2. The second is that the degree of leather and leather is different, the leather is very strong, a pair of leather shoes can be worn for 10 years, and leather products are usually aged and cracked in 1 2 years.

3. The third is that the surface is different. Although the surface of the lattice is also pressed, if you look closely, there are no pores on it, and there are small pores on the leather products.

4. The fourth method is to burn leather products with a lighter, and the leather products will emit a foul smell after burning, and there will be a strong chemical pungent smell after the leather is burned. And there will be a phenomenon of melting.

5. The fifth method is to press wrinkles by hand, different leather products will appear fine wrinkles when pressed by hand, and wrinkles change from small to large, while leather products are usually not easy to wrinkle, and wrinkles will be very large.

Leather goods maintenance method:

1. If the leather products are dirty, you can use a clean flannel cloth dipped in protein solution to wipe them, which can not only remove the stain, but also make the leather surface shiny.

2. After the leather products are stained, it is best to wipe them gently with a cloth or soft hair product 1, then apply a layer of petroleum jelly, and then wipe them repeatedly with a soft cloth - finally, wipe the same color oil, brush it with soft bristles, and it can be as bright as new.

3. When the black leather bag is worn and faded and the white background is exposed, you can use ink dipped in egg white to grind into juice in the inkstone, and use a brush to dip the egg white ink on the surface of the bag repeatedly, and apply more to the faded part and small cracks, and put it in a ventilated place to dry after coating, and then apply oil and wipe it with a brush. The skin oil is black and shiny, and the color is as good as new.

4. After a long time, the leather bag will lose its luster and look old. You can use clean cotton yarn dipped in an appropriate amount of thinner material or clean gasoline, gently wipe it on the surface of the bag, wipe it a few more times in key places, and then immediately apply the oil again, rub it back and forth with a cloth to rub it back and forth, and a pair of shiny and new leather bags will come out.

Synthetic leather is better.

In the minds of traditional consumers, when buying leather products, they generally think that only leather products made of genuine leather are the best.

However, with the continuous innovation of science and technology, the current high-quality artificial synthetic leather can not only be consistent with the leather in appearance, achieve the feel and physical properties of the leather, but also slightly better in many aspects, such as chemical resistance, quality uniformity, adaptability to large production and processing, waterproof, mildew resistance, etc.

At the same time, lighter and more durable artificial leather offers greater design freedom in style and color. Whether Party A's father wants "colorful black" or "colorful white", artificial leather is not a problem, so it is loved by designers who are at the forefront of the trend.

Therefore, artificial leather synthetic leather has been increasingly affirmed by the market, widely used in all aspects of our lives, its wide range of applications, large quantity, many varieties, high grade, is traditional textile materials and natural leather can not meet For example, handbags, bags, clothing, household goods, sporting goods, stationery, documents, car interiors, jewelry boxes, handicraft packaging and so on.

The difference between leather and synthetic leather.

Leather refers to natural leather, which is processed from animal skin. Fake leather refers to synthetic leather or products that look like genuine leather but are actually artificially synthesized from chemical raw materials.

The shape of natural leather is irregular, uneven in thickness, its surface is often more or less light or heavy with some natural defects, its surface is smooth and delicate to varying degrees, the leather surface has obvious pores and patterns, and some also reveal coarse lines, and there are generally coarse velvet heads in the rock back leather.

The formation of synthetic leather is regular, the thickness is uniform, the surface is not damaged, the texture is uniform, its pores and patterns are also very uniform, and there is generally no pile in the leather. <>

Cow leather is a material made of raw cowhide that has been denatured and non-perishable by physical and chemical processing such as hair removal and tanning, and then modified and finished. Cowhide generally refers to raw cowhide that has been peeled from cattle without physical and chemical processing such as dehairing and tanning. Raw cowhide is smelly, perishable, hard, has no toughness and elasticity, and cannot be molded and processed.

Cowhide is made up of natural protein fibers tightly woven in three-dimensional space. The surface of the leather has a special grain layer, which has a natural grain and luster, and feels comfortable;

After the cowhide is cut, it should be dried in time, and the fur side down and the board side up should be placed on a wooden plank, mat, grass or clean and flat sandy land. When it is dry, turn it over and dry the fur surface, and when it is almost all dry, fold the cowhide fur face inward. It is best to dry the skins in a ventilated and dry place, or in the sun in weak sunlight, never in the hot sun.

On the other hand, cowhide is most afraid of rain, and it cannot be dried in the open air during the rainy season, so it is best to dry it indoors. Remember not to bake or apply ash over fire, as this will greatly reduce its quality.

Leather is a chemical product of raw hides after a series of physical and chemical treatment (tanning), after treatment, leather has good air and water permeability, high TS, good health performance, stable performance and so on. Therefore, sheep leather is a kind of leather made of goatskin tanning and processing, which belongs to a kind of genuine leather (but there are also bad manufacturers who deliberately take the name of sheep leather to confuse black and white).

The surface of sheepskin has a good luster and clear texture, and the leather will have better wear resistance after processing, so the sheepskin fabric is more durable and easy to care for. In addition, lamb leather also has a certain amount of warmth, and gloves or coats made of gloves are windproof and warm, suitable for winter wear.

The difference between sheep leather and sheepskin: real sheep leather is leather made from the skin on the sheep's body, which refers to the processed leather. Sheepskin is the skin that is peeled off the animal's body, which is raw, unprocessed, cooked and edible.

Leather refers to a material made from animals** that has been treated. This material is often strong, soft, and durable, and has many uses, such as making shoes, belts, gloves, bags, leather clothing, and many more. The main ** of leather is the ** of mammals, including cattle, sheep, pigs, crocodiles, etc., which usually need to go through multiple processes such as hair removal, degreasing, tanning, etc., in order to become high-quality leather products.

Leather has a high value in terms of craftsmanship, aesthetics, functionality, etc., and is also a material of great cultural and historical significance.

Summary. Pig leather is genuine leather, and pig leather is made from pig skin, so it is genuine leather. The structure of pig leather is characterized by rough and irregular dermal tissue, deep hair roots and through the cortex to the fat layer, so the leather pores have gaps, and the air permeability is better than that of cowhide, but the leather is rough and the elasticity is not good.

Pig leather is genuine leather, and pig Heng Lazhen leather is made of pig skin, so it is genuine leather. The structural characteristics of pig leather are that the dermal tissue is relatively rough and irregular, and the hair roots are deep and pass through the cortex to the fat layer, so the leather pores have gaps, and the air permeability is better than that of cowhide, but the leather is rough and the elasticity is not good.

Leather is processed animal fur that has been tanned, nitrated or otherwise treated to resist spoilage and is soft and supple in dry weather. Leather can be divided into leather for daily use, leather for national defense, leather for agriculture, leather for cultural and sporting goods, etc., and can be divided into chrome tanned leather, vegetable tanned leather, oil tanned leather, aldehyde tanned leather, etc. Leather can be divided into pig leather, cow leather, sheep leather, horse skin limb rubbing leather, donkey leather and kangaroo leather, etc., and a small amount of fish leather, reptile leather, amphibian leather, ostrich leather, etc.