Grasp The Basic Knowledge Of Leather Materials, Learn To Distinguish Dermis.

First, the basic knowledge of leather materials.

1, the meaning of dermis.

" Genuine leather "Leather" is a common term in the market of leather products. It is a customary way for people to distinguish synthetic leather from natural leather. In the consumer's concept, "real leather" also has a false meaning. It is mainly made of animal skin. There are many kinds of dermis, different varieties, different structures, different quality and different prices. Therefore, leather is both a general term for all natural leather and a vague logo on the commodity market.

From a physiological point of view, any animal skin has hair, epidermis and dermis. Because there are small mesh bundles in the dermis, they are quite strong and breathable.

2, raw materials for leather making

　　 To curry leather The raw material is animal skins. Although most of our lives are pigskin, cowhide and sheepskin, in fact, most animal skins can be used for tanning. Only cowhide, pig skin and sheepskin are of good quality and large yield. They are the main raw materials for leather making.

Although leather is widely used in leather making, according to a series of laws and regulations issued by the international regulations on animal protection, the raw materials used for production are restricted to a certain extent. The commonly used leather is cattle leather, sheep leather, pig leather and horse leather.

3, the characteristics and differences of leather materials.

Head skin and The two level Leather: according to the leather layer, there are two kinds of leather, including the first layer and the second layer. The top layer leather includes grain leather, shaving leather, embossed leather and special effect leather. The two layer leather is divided into two layers of pig and two layers of 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: used for grinding. Leather machine The surface is grinded after finishing and pressed on the corresponding pattern. In fact, it is "cosmetic" on the natural leather surface that is damaged or rough.

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: in the production process, the equipment is processed and grinded into only half of the grain surface, so it is called half grain leather. Some of the natural leather has been maintained. The pores are flat and oval, irregular in arrangement, and hard in hand. Generally, the raw materials with poor grades are generally chosen. So it belongs to 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 colored coloured resin is sprayed on the leather to hide the surface texture of the leather and 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 coloured resin is coated with beads, metal aluminum or metal copper to spray the leather synthetically, and then roll a layer of waterborne transparent resin. The finished product has various luster, bright lining, beautiful and luxurious, and is currently popular leather, which belongs to mid-range leather.

Characteristics of embossed cowhide: with patterned flower plates (made of aluminum and copper). Leatherwear The surface is heated to suppress various patterns, forming a style of leather. At present, the market is popular with "litchi stripes", which is made from a flower plate with a litchi pattern.

Two layers of leather: thick skins are made from split 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.