Classification of artificial leather

According to its composition:

The first is PVC (Polyvinyl Chloride), the products of combustion include water, carbon dioxide and chlorine-containing compounds, and even chlorine gas;

The second type is PE (polyethylene), which theoretically only produces water and carbon dioxide after being fully burned;

The third and most common one is PU leather (polyurethane). The products after full combustion include water, carbon dioxide, nitrogen, and a small amount of nitrogen-containing compounds.

According to the manufacturing method:

Genuine Leather:

"Leather" is a common word in the leather products market, and it is a customary name for natural leather to distinguish synthetic leather. In the consumer's mind, "dermis" also has a non-fake meaning. Animal leather is a kind of natural leather, which is what we often call genuine leather. It is a leather material with various characteristics, strength, feel, colors and patterns after tanning and processing from animals (raw hides). It is a necessary material for modern leather products.

The processing process of leather animal leather is very complicated, and it needs dozens of processes to make finished leather: raw hide-soaking in water-removing meat-degreasing-dehairing-soaking alkali- --Expansion - Deashing - Softening - Pickling - Tanning - Splitting - Shaving - Retanning - Neutralizing - ---Dyeing----Refueling-----Filling-----Drying----Finishing----Finishing----finished leather. There are also many types. According to the materials, the common ones are sheep leather, cow leather, horse leather, snake leather, pig leather, crocodile leather, etc. According to performance, they can be divided into two-layer leather, full-grain leather, suede leather, and modified leather. Top leather, film leather, composite leather, painted split leather, etc.

Among them, cowhide, sheepskin and pigskin are the three major skin types used in tanning.

Regenerated leather:

After crushing various animal waste skins and leather scraps, it is made by mixing chemical raw materials. Its surface processing technology is the same as that of leather trimmed leather and embossed leather. Its characteristics are that the edges of the leather are relatively neat, the utilization rate is high, and the price is low; but the leather body is generally thicker and weaker, so it is only suitable for making cheap briefcases and trolley bags. Shaped craft products such as, cue sleeves and cheap belts have uniform fiber structure on the longitudinal section, and the coagulation effect of fluid mixed fibers can be identified.