The Characteristics And Differences Between The First Layer Skin And The Two Layer Skin

　　 Head skin The characteristics and differences between the two layers of leather are:

According to the layers of leather, there are heads and layers. Split The top layer leather has grain leather and shaving leather. Embossed leather The two layer leather is divided into two layers of pig and two layers of leather.

(1) the top layer leather:

Grain leather: in many leather varieties, full grain leather tops the list, because it is made from the superior raw material of less damaged skin. The leather surface is kept in good natural condition, and the coating is thin, which can show the natural flower pattern of animal skin. It is not only wearable, but also has good air permeability. The leather products of Tian Hu series are made of high quality leather products using this kind of leather as raw material.

Shaving leather: it is made by using a leather grinding machine to coat the surface and then press the corresponding pattern. In fact, it is "cosmetic" for the natural leather surface with disability or roughness. This kind of leather almost lost its original surface state. Full grain leather characteristics: soft leather, wrinkled leather, front leather and so on. It is characterized by complete retention of granules, clear pores, fine, tight, irregular arrangement, plump and delicate surface, elastic and good air permeability. It is a high-grade leather. Leather products made from this cowhide are comfortable, durable and beautiful. Half grain leather characteristics: during processing, only half of the grain is processed and grinded, so it is called half grain leather. It keeps some of the natural leather's style. The pores are flat and oval, irregular in arrangement, and hard in hand. Generally, the raw materials with poor grades are chosen. So it belongs to mid-range leather. Due to the particularity of the process, its surface has no disability and scars, and its utilization rate is high. Its finished products are not easy to deform, so they are generally used in large box products. Shaving cowhide characteristics: also known as "smooth cowhide", the market is also known as fog surface, bright surface cowhide. It is characterized by smooth, smooth surface, no pores and skin veins. In the process of making, the surface of the surface is slightly grind and modified, and a coloured resin is sprayed on the leather to hide the surface texture of the leather, and then spray the waterborne light penetrating resin, so it is a high-grade leather. In particular, the bright, elegant and gorgeous style of bright leather is the popular leather of fashion leather.

Special effect leather characteristics: the manufacturing process requires the same finishing cowhide. Only the colored resin is coated with beads, metal aluminum or metallic copper without any ingredients to spray the leather synthetically, and then roll a layer of waterborne transparent resin. The finished products have various luster, bright colors, beautiful and luxurious villages, and are popular leather, belonging to medium grade leather.

Characteristics of embossed cowhide: use patterned flower plates (aluminum and copper) to warm the leather surface to suppress various patterns and make them into a style of leather. At present, the market is popular with "litchi pattern cowhide", which is to use a flower plate with a litchi pattern, and the name is also called "litchi pattern cowhide".

(two) two layers of leather:

It is thick skinned with a leather machine. The top layer is used to make full grain leather or shaving leather. The two layer is made of two layers of leather after finishing or laminating. Its fastness and wear resistance are poor. It is the cheapest kind of leather. Two layers of cowhide characteristics: the reverse is cowhide's second layer leather material, coated with a layer of PU resin on the surface, so it is also called the film skin. Its price is cheaper and its utilization rate is high. With the change of technology, it has also been made into various grades, such as imported two layers of cowhide. Because of its unique technology, stable quality and novel varieties, the price and grade of the top grade leather are no less than that of the top layer of leather.

Three. Dermal properties:

1. water permeability can pass through about 800CM of sweat within 24 hours.

2. breathability 100C/ hours /CM.

3. moisture absorption and dehumidification.

4. insulation: some skin can be subjected to 120 to 160C high temperatures. The cold resistance is up to 50 to 60 degrees below zero. Wearing leather sandals and plastic sandals will obviously feel that when walking on hot days, leather sandals do not burn feet, and plastic sandals will feel hot.