The difference between leather and ordinary man made leather, leather is genuine leather or artifici

For tens of millions of years before the invention of weaving, humans used animal skins obtained from hunting as cold decorations. This can be called the earliest "leather". Leather has become the earliest cultural product of mankind.

The ancients dried the animal skin peeled from the animal and wore it directly on the body, which was thick and hard and not easy to deform, thick and heavy, with an unpleasant smell. Once it comes into contact with water, it is easy to rot and lose its practical value. As you can imagine, it is unbearable to wear such "leather".

Modern leather, on the other hand, is soft and comfortable to wear, light and easy to bend, odorless, and extremely non-perishable.

So what is the fundamental difference between ancient "leather" and modern leather? It is the difference between leather and leather. That is to say, the ancients wore leather, and modern people wore leather.

Strictly speaking, leather and leather are two very different things. Skin refers to the state in which the collagen fibers of the skin are still on the animal's body (referring to the chemical structure), and can be hairy or hairless. The dry state of the skin is hard and easy to break but not easy to bend, and when the moisture content is large, the bacteria in it will multiply rapidly and decay.

Leather refers to the physical and chemical treatment of animal skin, which removes useless components from the skin, and changes the chemical structure of the collagen fibers of the skin to be different from its state on the animal body; The leather is soft and easy to bend in the dry state, and it is not easy to rot in the wet state. Leather is the raw material for tanning, that is to say, leather is made from leather.

Although leather and leather are two different things, but because the use value of leather in daily life is small, the common is leather, and leather is ** leather, so people slowly habitually combine the code name "leather" and "leather" of two different things into one, that is, leather, as the new code name of leather. Now we speak of leather has become a fixed noun, referring to leather, without the meaning of leather. What's more, for the sake of convenience and simplicity, the word 'leather' in leather has been omitted in the name of leather products, and it is directly commensurate with leather, such as leather shoes, leather suitcases, leather clothing, etc.

Calling "leather" "leather" seems to be more casual and customary than calling leather shoes, leather boxes, leather clothes, etc. It is worth pointing out that at present, some people simplify leather to leather, and artificial leather is referred to as leather, this statement is incorrect, and it is not rigorous, it is easy to confuse people in the concept, and it increases the difficulty of buying leather products for those who do not have the ability to distinguish between real and fake leather.

One is a soft package, the sound insulation effect is better, and the other effect is worse.

1. What is artificial leather, artificial leather is leather that can replace other leather clothes. It is usually made of fabric, coated with synthetic resin and various plastic additives. In the past, due to the relatively backward economic level, people could not afford to buy leather clothes, so they could only buy some counterfeit ones.

What is artificial leather, artificial leather is easy to age, harmful to human health, so people will not choose artificial leather, gradually, artificial leather is gradually replaced by other items.

2. What is artificial leather, usually based on the object, sprinkled with a layer of oil on the cloth, and then heated to plasticize it, and rolled flat or embossed to obtain the product.

3. Similar to natural leather, it has the characteristics of softness and wear-resistance. Depending on the type of covering, there are artificial leather for shoes, artificial leather for bags, and so on.

Artificial leather is a plastic product that looks and feels like leather and can be used in place of it. It is usually made of fabric, coated with synthetic resin and various plastic additives. There are mainly two types of PVC artificial leather and PU synthetic leather.

Usually the fabric is used as the base base, on which a layer of resin mixture is coated or pasted, and then heated to plasticize, and rolled or embossed to obtain the product. Similar to natural leather, it has the characteristics of softness and wear-resistance. Depending on the type of covering, there are artificial leather for shoes, artificial leather for luggage, etc.

In China, people are accustomed to call the artificial leather produced with PVC resin as raw material as PVC artificial leather (referred to as artificial leather); The artificial leather produced with PU resin as raw material is called PU artificial leather (referred to as PU leather): the artificial leather produced with PU resin and non-woven fabric as raw materials is called PU synthetic leather (referred to as synthetic leather).

Artificial leather: a plastic product similar to leather. It is made by rolling a plastic film onto a cotton cloth or evenly applying a synthetic resin containing plasticizers to a cotton cloth and then processing it.

It is soft in nature and has a variety of colors and patterns. Artificial leather concept: artificial leather is a mixture of resin raw materials and other additives, after a certain processing to obtain a material similar to natural leather.

At present, the most widely used resin raw materials are polyvinyl chloride (PVC) and polyurethane (PU). The main varieties of artificial leather: PVC artificial leather (polyvinyl chloride (PVC) artificial leather).

The advantages of PVC artificial leather are: light weight, easy processing, wear-resistant, and inexpensive; The disadvantages are: poor air permeability, poor flexurality due to hardening at low temperatures, cracking and poor slip resistance.

PU artificial leather (polyurethane (PU) artificial leather)] PU is a product made of chemical reaction between diols or polyols and dibasic or polyisocyanates. There are two types of processing technology: dry and wet. Dry-processed PU artificial leather is suitable for making boots, shoes, bags and outerwear.

Artificial leather made by wet process is suitable for jackets, raincoats, cold gloves, down jackets, shoe materials, furniture, sofa cushions and interior decoration. Therefore, artificial leather and PU are different, it is not easy to distinguish their good and bad, and each has its own advantages and disadvantages. Different materials are selected according to their usefulness.

Leather has both genuine and faux leather, which is a polysemous word and a general term for leather products. According to the way leather is manufactured, it is divided into: genuine leather, artificial leather, recycled leather and synthetic leather.

Genuine leather is leather made from animal skin, which is often referred to as genuine leather. It is also a customary name for natural leather that people use to distinguish synthetic leather; Artificial leather, also known as imitation leather, is a plastic product that looks and feels like genuine leather and can be used instead of it. It is usually made of fabric, coated with synthetic resin and various plastics, mainly PVC artificial leather and PU synthetic leather; Regenerated leather, all kinds of animal waste skin and leather scraps crushed, the deployment of chemical raw materials processing and production, its surface processing technology and leather trimming leather and embossed leather are the same, its characteristics are that the edge of the leather is neater, the utilization rate is high, cheap; Synthetic leather, which simulates the composition and structure of natural leather and can be used as its substitute material, is very similar to leather on the front and back, and has a certain degree of air permeability, which is closer to natural leather than ordinary artificial leather.

How to identify genuine leather: 1. Hand touch: that is, touch the leather surface with your hands, if it is smooth, soft, plump and elastic, while the general artificial synthetic leather surface is astringent, rigid and poorly soft.

2. See: The real leather surface has clearer pores and patterns, the yellow cowhide has more symmetrical fine pores, the yak leather has coarser and sparse pores, and the goatskin has fish scale-like pores.

3. Smell: All genuine leather has the smell of leather; Artificial leather, on the other hand, has a plastic smell.