It is used for sofa surface decoration. The raw materials include leather, PU, PVC and other materials. Leather sofa leather is mostly made of animal leather such as cow, pig, and horse. The thickness is generally 1.2-1.4mm. It is divided into first-layer leather and second-layer leather according to the leather layer: the former retains the natural fiber structure, and the latter relies on spraying or laminating. Among artificial materials, regenerated leather is processed from leather scraps, PU/PVC simulates leather through laminating, and microfiber leather has both wear resistance and breathability.
The processing technology of leather sofa leather includes coating, embossing, etc., which can be derived from laser leather, water-dyed leather, embossed leather and other types to form imitation animal textures or three-dimensional patterns. Identification of genuine leather can be achieved by observing the pore shape: cowhide is dense and disordered, pig skin is arranged in a triangle, and sheepskin is fish scale-like; in the combustion test, genuine leather emits the smell of hair, while artificial leather has a plastic smell. The texture of genuine leather is soft and elastic, while the surface of artificial leather is astringent and lacks flexibility. Sofa leather is the main raw material for making genuine leather sofas. There are many raw materials for sofa leather, including genuine leather sofa leather, PU sofa leather, PVC upper leather, etc. Genuine leather sofa leather generally includes cowhide (first layer, second and third layers, suede), pigskin (first layer, second layer, suede), and horsehide. Cowhide is divided into yellow cowhide and buffalo leather, and is divided into first layer, second layer and third layer according to its layers. Sofa is soft leather, and its thickness is mostly between 1.2 and 1.4 mm according to different varieties. The common quality requirements are comfort, durability and beauty. The area of sofa leather is better to be large, which can increase the cutting rate and reduce the seams. There is a kind of leather called modified leather, which is processed and coated on the leather surface, and it can be pressed with different patterns. Some coated leather materials are thick, with poor wear resistance and breathability. There are many varieties of genuine leather sofa leather now, and animal-like leather is the most widely used. There are generally snake print, leopard print, zebra print and so on.