Classification Of Leather Used For Shoe Materials

< p > overview of the world leather industry, < a target= "_blank" href= "http://www.91se91.com/" > leather < /a > including leather, regenerated leather and artificial leather.

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< p > 1. The dermis is raw material from cattle, sheep, pigs, horses, deer or some other animals. After tanning and processing, leather is made of leather materials with various properties, strength, touch, color and pattern. It is an essential material for modern leather products.

Among them, cattle hide, sheepskin and pigskin are the three big skins of tannery materials.

The dermis is divided into two types: head skin and two skin.

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< p > (1) the first layer of skin is a cattle, sheep and pig skin with grain, and there are natural scar and blood tendon marks on the surface. Occasionally there are knife injuries in the processing process and very low belly parts. The imported head skin and cattle number mark.

The whole grain of the skin can be distinguished from the animal skins from the size and density of the pores.

There are more kinds of cattle skin, such as cow skin, meat, cattle hide, cattle hide, cow hide, Bull Hide, Uncastrated Bull Hide and castrated bull skin.

There are also cattle hide, buffalo skin, yak skin and calf skin in China.

Among them, the pores of the buffalo hide are thicker and thinner, while the yellow cattle hide is smaller and thicker than that of the buffalo hide.

The pores of sheep skin are thinner, denser and slightly skewness, mainly consisting of two main categories: sheep skin and goat skin.

Pigskin's rule of long hair is a small number of 3~5 roots, so it is easy to distinguish. It is easy to distinguish. Pigskin is commonly used for raising pigs and wild boar skins. The famous wild boar is a wild boar. The boar skin has obvious porcine skin pores and grain characteristics. Because of its special collagen fiber structure, it can be made into very soft a target= "_blank" href= "http://www.91se91.com/" > dress < /a > leather or glove leather, and the value is very high.

In addition, ostrich skin, crocodile skin, short nosed crocodile skin, lizard skin, snake skin, bullfrog skin, sea fish skin (shark skin, cod skin, fish skin, eel skin, pearl fish skin, etc.), freshwater fish skin (with grass carp, carp skin and other scaly skin), fur fur fox fur (Yin Hu skin, blue fox skin, etc.), wolf skin, dog skin, rabbit skin and so on are easy to identify, and can not be made of two layers of skin.

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< p > the head skin is made directly from the raw skins of various animals, or the skins of cattle, pigs, horses and other animal skins with thicker cortex are sliced up and down to two layers, and the upper part of the fibrous tissue is processed into various kinds of head skin.

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< p > (2) two layers of skin are two loose parts of fibrous tissue, which are processed by chemical material spraying or covered with PVC and PU films.

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< p >, therefore, the effective way to distinguish the skin of the head and the two layer skin is to observe the fiber density of the longitudinal section of the skin.

The skin of the first layer is composed of a dense thin fibrous layer and a slightly loose overlayer which is closely connected with it. It has good strength, elasticity and process plasticity.

The two layer of leather is only a loose fibrous tissue layer. It can only be used for making leather products only after spraying chemical raw materials or polishing. It maintains certain natural elasticity and process plasticity, but its strength is poor, and its thickness is the same as that of the head skin.

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< p > there are various kinds of < a href= "http://cailiao.sjfzxm.com/Matertial/show/default.aspx" > Leather > /a > for the popular production nowadays, the leather surface processing technology is somewhat different, but the distinguishing method is the same.

The following is a detailed description of leather processed by leather processing: < /p >

< p > 1, water stained skin: it refers to all kinds of soft skin, which are bleached and stained with various kinds of colors, such as cattle, sheep, pigs, horses, deer and so on.

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< p > 2, open edge pearl skin: also known as film leather, it is a half thin skin that is thrown along the backbone and trimmed with a loose wrinkled belly and some part of the skin or two layers of open skin. It is made of PVC thin film of various kinds of pure color, metallic color, pearl light, pearl color, or multicolor.

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< p > 3, lacquer: leather made of two layers of leather, coated with various chemical raw materials, pressed or matted.

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< p > 4, repair surface: it is a poor top layer of leather, polishing the surface, grinding the scar and blood marks on the surface. After spraying with all kinds of popular leather paste, the skin is pressed into grain or smooth surface.

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< p > 5, embossed leather: generally used to repair all kinds of patterns or patterns with leather or open side beads.

For example, the crocodile pattern, the lizard pattern, the ostrich skin pattern, the python skin pattern, the water ripple, the beautiful bark pattern, the litchi pattern, the imitation deer pattern, and so on, and all kinds of stripes, flower patterns, stereoscopic patterns or creative patterns reflecting various brand images.

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< p > 6, printing or leather: the material is the same as the embossed leather, but the process is different. It is printed or ironed into a variety of patterns or patterns of the first layer or two layers of leather.

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< p > 7, frosted skin: the leather surface is polished, and the grain scar or rough fiber is worn out to reveal the smooth and smooth leather fabric and then dyed into various popular colors.

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< p > 8, anti velvet skin: also known as "Pi Pi", is the surface of the billet grinding into velvet, and then stained with a variety of popular colors into the top of the skin.

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< p > 9, laser skin: also called laser skin. Laser technology is used to etch various leather patterns on leather surface.

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< p > two, regenerated skin: after crushing all kinds of animal skins and leather waste, chemical raw materials are processed and manufactured.

Its surface processing technology is the same as leather surface and embossed leather. It is characterized by its neat edge, high utilization rate and low price. However, the skin is generally thicker and its strength is poor. It is only suitable for making the products of price, such as price document box, pull rod bag, club sleeve and so on. The structure of its longitudinal section is uniform and uniform, and the solidification effect of liquid mixed fiber can be identified.

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< p > three, artificial leather: also known as imitation leather or rubber, is the general name of artificial materials such as PVC and PU.

It is made on the basis of a target= "_blank" href= "http://www.91se91.com/" > textile > /a "cloth or non-woven fabric. It is made from different kinds of PVC and PU, such as PVC or PU. It can be made according to the requirements of different strength, wear-resistance, cold resistance, color, gloss, pattern and so on. It has a wide variety of colors, good waterproof performance, neat edges, high utilization rate and relatively low price, but the majority of artificial leather can not reach the dermis effect with its elasticity and elasticity. Its longitudinal section can see tiny bubble holes, cloth or surface film and dry dry man-made fibers.

It is a very popular material from the early stage until now. It is widely used to produce various leather products or some of the genuine leather materials.

Its increasingly advanced manufacturing process is being widely used in the manufacture of two layers of leather.

Nowadays, the leather like leather with the characteristics of leather has been produced, and its surface technology is almost the same as that of domestic leather.

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