Genuine leather is natural leather, mostly from animals, such as common cowhide, sheepskin, crocodile skin, etc. Genuine leather has natural texture, strong air permeability, and good resilience; Synthetic leather is to apply PU resin on cloth to make industrial products similar to genuine leather, and the synthetic leather appearance texture is stiff, with poor air permeability, and moisture absorption is obviously not as good as genuine leather.
There are three specific differences:
1. Synthetic leather:
Synthetic leather, which is made of various PVC and PU foaming or film-coating processes on a woven or non-woven fabric base, and can be processed according to the requirements of different strengths, colors, luster, patterns, etc.
However, most synthetic leathers cannot achieve the effect of genuine leather in terms of feel and elasticity. In its longitudinal section, tiny air holes, cloth base or surface film and dry man-made fibers can be seen.
The so-called genuine leather is the raw hide peeled off from the animal, and then processed in a tannery. Usually cowhide, sheepskin and pigskin are the main raw materials for making genuine leather. Genuine leather is generally divided into two types: first-layer leather and second-layer leather. More than 90% of the surface material is made of top-layer leather (except for top-layer transfer film leather), and it is allowed to mark "genuine leather".
1. The difference in texture
The texture of genuine leather is natural, while the texture of imitation leather is produced by imitating the texture of genuine leather during processing, so the texture of genuine leather is more natural.
2. The difference in touch
The leather feels smooth and delicate, very textured. The imitation leather will have a cold feeling, without the comfortable texture of genuine leather, and the rough feeling of industrial products is obvious to the touch.
3. The difference in ventilation
The leather has pores, so it has very good air permeability, and it is very breathable and not stuffy when used to make clothes or gloves. Synthetic leather has no pores, poor air permeability, and feels stuffy and stuffy when worn.
Synthetic leather consists of impregnation, coating, solidification, washing, drying, surface finishing and other steps of non-woven fabric and other substrates. The main differences of various synthetic leathers are the fiber composition and structure used in the substrate such as non-woven fabrics, and the types of polymers used to impregnate the non-woven fabrics. It is mass production, so the price is relatively cheap.
The leather processing method is a method of processing animal skins into mature skins for making leather products. Raw animal skin not only contains oil and hair fiber, but also hardens after drying. Therefore, in order to turn animal skin into leather that can be used by people, preparatory processes such as fat removal, depilation, liming, deliming, softening, and pickling must be carried out first, and then the bare hide is tanned with tannic acid. During the tanning process, tannic acid not only replaces the moisture in the raw hide, but also combines with the collagen fibers of the raw hide to become a heat-resistant, hydrolysis-resistant, and anti-microbial leather. Due to the complicated production process, it is generally used for luxury bags, high-end car seats, and big-name clothes.