How To Calculate The Standard Of Leather Material Classification

1: brief description of leather materials

"Genuine leather" is the most common word in the leather products market. It is a customary way for people to distinguish synthetic leather from natural leather.

In the concept of our consumers, "real leather" also has the meaning of non fake products.

It is mainly made from animal fur.

There are many kinds of dermis, different varieties, different structures, different quality and different prices.

Therefore, the dermis has become a general term for all 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 there are many kinds of leather materials for 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, so the commonly used leather is cowhide, sheepskin and pigskin.

For the finished leather products, there are common types of genuine leather, such as mirror skin, wax skin, soft skin, grain skin, pressed leather, soft calf skin, calf skin, anti fur, cattle bagal, two skin, pig skin, pig skin, leather, crazy horse skin, goat skin, sheep skin, fish skin, snake skin, wool free, wool, cat skin and so on.

In the shoe industry of Dongguan, there are many manufacturers of leather shoes, and many leather products are very expensive from leather processing to processing. Therefore, every factory has a very high demand for the first production line to consume the leather. They have great energy to save raw materials, and strive to make the most qualified products with the smallest amount. This is directly linked to the profits of the factory. Obviously, the importance of the calculation of the real leather is self-evident, but to accurately calculate its dosage, we must first understand the types of leather, the basic symptoms, the size of the basic sheets, the size of the basic sheets and the utilization rate of all kinds of leather.

2: dermis material is bad and allowed.

This mark is not acceptable at any part of the upper part of the shoe because the mark is made by the owner of the cattle and sheep to identify their own raised animals.

Stab wounds - the scar marks on the net layer and even the nipple layer of the skin during the peeling process of the raw leather are not acceptable at any part of the shoe.

The bruises, scratches, scratches, and wounds that are not healed due to collision are not acceptable at any part of the upper part of the shoe.

Split surface - due to the damage of the raw skin, the pores are thickened and enlarged during the leather making process.

Injuries caused by scrapes, scratches, scratches, or wounds that have healed due to collision, are concealed in the upper and lower parts of the upper and lower parts of the waist or shoes.

Stretch stripes - the natural rough stripes on the leather surface are particularly evident in the neck part of the cowhide, and the older the cattle are, the thicker they are.

It is not acceptable for other parts of the shoes to accept the concealed parts on the shoes.

Loose surface -- the result of separation between the nipple layer and the reticular layer is usually located in the limbs of cattle and sheep skin. It can not be accepted in other parts of the body without special force.

Insect spots - the scars left by ticks and insect bites. This is the specific location of shoes.

Stria striae - when the raw blood is not drained and the lines left behind, the toe position should be noted. In general, other locations can be used.

Color difference - due to the thickness of the leather, batch and other reasons, resulting in uneven dyeing or batch difference resulting in color difference, generally with dual operation.

Pollution - a defect in the process of leather processing that is improper or insufficient in the work of preventing dirt from the surface of the leather, which is generally not available except for the concealed position of the upper.