In daily life, the use of leather goods is very common, such as leather wallets, backpacks, satchels and other storage leather, in addition to leather sofas, leather shoes, leather clothes, etc.. In fact, leather leather goods popular not overnight, from several hundred years ago, people have begun to use animal fur to keep warm, or leather made into storage props. Development to date, leather goods production or leather is becoming more and more abundant.
For the definition of leather, there are two levels. The first level is the "skin", a simple understanding is not after aging and to prevent leather decay treatment, from the animal body to obtain the original skin, which can not be directly used to make leather products.
Pig skin may be a lot of people are eating more, with less. Its surface is rough, three pores form a set of triangular pattern, lighter quality, although the pores are thick, but poor breathability.
Cowhide can be said to be the most and widely used in making leather products, and has become a representative leather within the leather goods industry. And according to the age and gender of the cow, cowhide also formed its own set of detailed classification.
Sheepskin according to the type of goatskin, lambskin, sheepskin, its general characteristics are delicate and soft to the touch, pores in the leather category is small. At the same time, according to the use of different people, will correspond to the choice of different ages of goat skin, for example, to make clothes for children use of small goat skin, and to make clothes for adults use is the goat skin.
The second level is the leather, which is simply the original leather, after the process of "tanning", so that the original leather can reach the state of making leather goods. And this "tanning" common are vegetable tanning, chrome tanning, oil tanning, mixed tanning method these four kinds. The following is an introduction to "tanning" through several common types of leather.
In addition, the advantages of vegetable tanning method and chrome tanning method, and the emergence of mixed tanning method. The oil tanning method is different from the three previously mentioned, using animal oil for tanning (generally using fish oil), the oil tanned leather is waterproof and very soft.
In the case of leather goods or bags, they will also be named according to the surface of the leather. For example, the silver side, even the side with pores is smoother. The back side will be processed, dyed, shaped and other processing treatment, which belongs to the surface of the processed leather.
Modern leather tanned with a tannic acid extracted from plants is called "leather". This type of leather is not sprayed or dyed and has a very good texture. However, it is highly absorbent and becomes soft when it absorbs water, and hardens when it dries. But after drying, the glossy leather will not return to its original shape.
If vegetable tanning is a method of making leather using natural ingredients, chrome tanning is a method of making leather from raw hides using chemical synthetics.
The leather made by this "tanning" method is not only soft, flexible and stretchable, but also suitable for all kinds of leather goods, which is highly used in the industry.
And the silver surface and then according to the part or treatment can be classified, for example, the bed surface refers to the inner side of the silver surface, the bed leather is filtered silver surface off the leather, which is often said to be the second layer of leather. If the silver surface for rough hair treatment is suede, generally common use is calfskin, goatskin or calfskin.
Post time: Nov-19-2022