Characteristics of tanned leather

Vegetable tanning is mainly a traditional way of tanning leather, and when we use different animal leather or plant tannins for reactive tanning, the process is often relatively complex and relatively low in efficiency. For tanning a piece of leather, the time can be about 1-2 months if it is fast, and 3-6 months if it is slow. At present, most of our high-quality vegetable tanned leather is mainly produced in some developed foreign countries. In terms of vegetable tanned leather, it retains our fiber structure very well, and has the characteristics of rigidity and edge sealing plasticity.
From the classification of leather materials on the surface, in terms of full grain leather, it mainly maintains the integrity of natural pores and grain surface, and is relatively clear in grain pattern. There is no trace of light grinding and modification, and it presents a natural and uniform phenomenon in pores. In terms of light shaving, it refers to the grain surface undergoing light grinding process, in terms of visible texture and pores. However, because the full grain skin is relatively uniform than pores, it is also called half grain skin. In terms of shaving leather, it mainly refers to a kind of shoe leather with special effect or full grain surface by grinding part of the grain surface to reduce the impact caused by the disabled grain surface, and then manufacturing the false grain surface through a special modification method. On the other hand, the fine velvet like swans is present on the grain surface of the normal velvet skin, and it is relatively soft in the hand feel. For a kind of shoe leather that can grind out fine velvet in terms of meat surface. From the perspective of frosted skin, the surface presents fine sand shape, and for the size of sand particles, it is mainly divided into fine sand and coarse sand.
In terms of leather materials, the classification of finishing can be divided into all aniline leather. All aniline leather is a kind of finishing agent that does not contain a covering pigment paste and only uses a colorant containing only metal chromium dyes. And relatively transparent in terms of coating. The grain lines and natural pores on the grain surface will be more clearly visible, and it is processed with no disabled grain surface and less disabled embryo skin, which is more high-grade and natural. For a chrome dye made of metal, it will be mixed with a very small amount of a coating agent of covering pigment paste, and for some, it retains the effect of aniline. It is mainly processed by a kind of embryonic skin with little or no disabled particle surface, which is more high-grade and natural, so it is also called half grain skin. Aniline filling is a function that can grind part of the lining, and it is mainly made by special finishing methods. It can imitate the false grain surface of the whole grain surface, and has a partial aniline effect. The grain surface and pores will disappear obviously after a ton of stretching through the leather surface, and a kind of shaving leather with more disabled grain surfaces but processed by deep embryo skin can be used.
The rubbing effect can be painted on the basis of the finishing of the shaving skin, and part of it can be wiped off by wiping on this effect layer, and the effect of different depth is formed. Under the two-color effect under the gradual transition, the background colors are mostly yellow, purplish red, red yellow brown, black and dark brown, For pearlescent leather, it is mainly a finishing agent that presents pearl luster on the leather surface and uses pearlescent materials for finishing. Moreover, the leather surface mainly adopts the luster of metal. For the mirror surface leather, the moisture curing agent can make the coating appear as bright as a mirror. Papina is mainly soft, plump and elastic, relatively compact and fine grain surface. The coating is relatively thin and has relatively clear grain lines and pores. The waxed leather can be polished with cloth, which will produce the effect of bright marks when we point out. The leather surface is relatively compact, elastic and fuller, and the grain lines and pores are more clearly visible. Grinding the charred wax that can be used in the cloth wheel can produce an effect of charring antiques. In terms of oil soaked leather, In the production of leather, the most important thing is that there will be relatively more fatliquoring during production. The meat surface can be ground and has a relatively strong sense of oil on the surface. From the perspective of this kind of leather, it is mainly characterized by warm winter and cool summer, relatively high thermal insulation performance and better air permeability.