To understand the truth of leather, first of all, there is a certain understanding of leather. There are a wide variety of leather materials on the market. The most common ones are cowskin, pigskin and sheepskin skins. Some skins are based on their internal species. Can be subdivided: like leather is divided into yellow leather and buffalo leather; sheep skin is divided into goatskin and sheep skin and so on. And these leathers can be divided into the first layer, the second layer and the third layer according to the level of the process. ! All kinds of leather materials have the characteristics of various types of leather materials. Commonly used leather materials have the following characteristics:

Leather : Because leather can reach a certain thickness and fastness, it is mainly used for leather goods and leather shoes. The characteristic of leather is that the pores are small, evenly distributed, the leather surface is full, the skin is more solid than other skins, and the hand is firm and full of elasticity. There are also many varieties of cow leather garment leathers. At present, the leathers processed into different styles of skin are not as good as those of pigskin and sheepskin. The second layer of cattle is also used for clothing, but is generally used for clothing on the second layer of suede leather, the difference between it and the second layer of the pig is: rough fiber is more rough, but no pores. The cow modified leather is mainly used for leather goods. It is processed on the second floor of cows into imitation or distressed effect. This kind of leather has certain difficulty in identification.

Pig skin : Smooth pig, smooth surface of ordinary pig is processed on the surface of pigskin through different tanning processes. First, the surface of the skin is coated with a paste and then painted. The surface of the ordinary pig is shiny, and the pores are arranged in a regular manner. Generally, three pores are in a group of triangular shapes. According to the different regions and different pigs, the smoothness of the pig's smooth surface is also different in quality. There is no detailed explanation here, and the quality of the pig is fine. The grain of the pig is fine and the hand feels soft. . Thanks to the continuous improvement of the leather process, the smooth surface of pigs can now be processed into many different skin types. Embossing effect, embossing effect is on the surface of the skin pressure bar, blood striae, etc.; litchi grain effect, this effect is sometimes a bit like a coarse-grain leather effect, but there are essential differences with leather. Litchi is characterized by a slightly thicker skin and rougher grain than usual. Light coating effect, the surface of the skin is not directly coated with a paste but different colors. The gloss is slightly darker than the normal smooth surface. This kind of skin feels better than the ordinary smooth surface, and the skin has a feeling of sagging in the hand. Washing effect, the glossy finish of the washing effect is also thin, and the difference from the ordinary glossy surface is not great, and the difference is softer than ordinary glossy face. You can wash the stains on the clothes directly with water. Wipe the leather, this leather surface and floor color are different, after the finished product can be used in the appearance of the clothes with sandpaper or other raw materials in the place you need to wipe, and make your clothes become another more For a stylish style.

Safety shoes leather identification method :

1. Touch: Feel the feel of the hand Touching the surface of the leather is smooth (grainy processed into coarse leather), soft, full and elastic feeling is the leather.
2. Look: The eye is mainly used to identify the type of leather and the quality of the leather grain. Observing the surface of the dermis has more obvious pores and patterns, and although the synthetic leather also imitates the pores, it is not really clear. In addition, the opposite side of the synthetic leather has a layer of textiles as the bottom plate. This textile bottom plate is used to increase its tensile strength, and the reverse side of the leather is not such a layer of textiles. This identification is the simplest and most practical method.
3. Smell: Smell and good quality leather does not have any odor. All dermis has leather odor. If there is pungent odor, it may be handled badly during the tanning process and the use of certain chemical raw materials exceeds the standard.
4. Burning: The ignited ignited odor of the leather is almost the same as the odor after the hair is ignited, and it does not scab after burning. It can be grinded with a finger; the artificial leather emits a pungent odor upon burning, and burns and forms a knot.

China Labor Insurance Network