Some Small Common Sense About Leather

Sheepskin leather

The fat content in the cortex is more, the fiber structure of the leather is slack, very soft, the grain is fine and the elongation is large, but it is not strong.

Goat leather: fat content in the cortex is less, fiber structure is more plump than sheep leather, solid and durable.

The difference between the two is that sheep leather is smooth and smooth, and the pores of goat leather are clear and elastic.

No matter what kind of clothing made of sheep leather products has beautiful patterns, the luster is soft and natural, light, soft and elastic, but the strength is not as good as cattle leather and pig leather.

The epidermis is located under the hair and is closely attached to the upper part of the dermis, and is composed of different epidermal cells.

The thickness of the epidermis varies from animal to animal, for example, the thickness of the skin of the cowhide is 0.5 to 1.5% of the total thickness, and that of sheep skins and goat skins is 2 to 3%, while that of pigskin is 2 to 5%.

The dermis is located under the epidermis, between the epidermis and the subcutaneous tissue, and is the main part of the skin.

Its weight or thickness accounts for more than 90% of raw skins.

The raw material of leather making is animal skins. Although the most common products in our life are pig skins, cowhide and sheepskin, 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 there are many kinds of raw materials for leather making, according to a series of laws and regulations issued by the International Animal Protection Ordinance, 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.

Characteristics and differences of leather materials

The first layer of leather and two layers of leather: according to the leather layer, there are first and two layers of leather. The top layer leather is grain leather, shaving leather, embossed leather, special effect leather and embossed 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.

Shaving leather: it is made by grinding the surface after grinding, and then pressing the corresponding pattern.

In fact, it is "cosmetic" for the natural leather surface with disability or roughness.

This kind of leather has almost lost its original surface state. Full grain leather characteristics are divided into soft leather, wrinkled leather, front leather and so on.

Its characteristics are complete retention of granules, clear pores, fine, tight and irregular arrangement, full and meticulous appearance, and full half grain leather characteristics: during processing, only half of the grain is processed and grinded into equipment, 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 effects cowhide characteristics: the production process requires the same finishing cowhide. Only the colored resin is coated with beads, metal aluminum or metal copper to spray the leather synthetically, and then roll a layer of waterborne pparent resin. The finished products have various luster, bright and beautiful village objects, and Yong Ronghua is expensive. It is a popular leather and belongs to mid-range 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 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.

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.

　　納帕革：也稱納帕皮牛皮軟面鞋面革，英文名稱：NAPPA NAPPA．由南韓流傳而來，當(dāng)時(shí)中國制革技術(shù)還很落后，納帕革就當(dāng)迫來品一樣，久而久之納帕革這一稱呼就這樣留下來了．納帕革的技術(shù)革命在韓國七十年代八十年代初，韓國服裝業(yè)到達(dá)一定高峰，皮草行業(yè)軟皮納帕革也得到很好的應(yīng)用，手感柔軟是納帕革的最大特，表面絲滑也是納帕革特點(diǎn)之一，后來用納帕革增加牛皮厚度后，用來制作鞋子同樣表現(xiàn)納帕革的所有長處，所以納帕革在鞋業(yè)界也漸漸開始流行起來．納帕革真正在中國的應(yīng)用在八十年代后期九十年代初，在中國辛集用納帕革制作的皮衣服裝很快風(fēng)迷全國，充份演驛了納帕革柔軟、耐寒、高貴的特點(diǎn)。

The popularity of Napa leather in the footwear industry is in Wenzhou, Zhejiang. Since 90s, Napa leather has been used as a casual ingredient for casual shoes.