Superfine fiber PU synthetic leather is a kind of non-woven fabric with three-dimensional structure network made of superfine fiber short fiber by combing and needling. After wet processing, PU resin impregnation, alkali reduction, skin grinding, dyeing and finishing, superfine fiber leather is finally made. It has extremely excellent wear resistance, excellent cold resistance, air permeability and aging resistance.
2. Artificial PVC leather
The first generation of PVC artificial leather is based on textile or knitting materials. Polyurethane resin is a kind of leather imitated product with coating, which is similar to natural leather, with bright appearance, soft texture, wear resistance, folding resistance, acid and alkali resistance, etc.
Note: the difference between PVC artificial leather and PU synthetic leather can be distinguished by the method of gasoline immersion. The method is to use a small piece of fabric, put it in gasoline for half an hour, and then take it out. If it is PVC artificial leather, it will become hard and brittle. If it is PU synthetic leather, it will not become hard and brittle.
PU leather development history:
In the 1970s, the non-woven fabric of synthetic fiber appeared the process of needling and bonding, which made the substrate have lotus shaped cross section and hollow fiber shape, and reached the porous structure, which met the requirements of natural leather mesh structure; At that time, the surface layer of synthetic leather had achieved the micro pore structure polyurethane layer, which was equivalent to the grain surface of natural leather, so that the appearance and internal structure of PU synthetic leather was gradually close to that of natural leather, and other physical properties were close to the index of natural leather, and the color was more bright than natural leather; its room temperature folding resistance reached more than 1 million times, and the low temperature folding resistance also reached the level of natural leather.
The appearance of superfine fiber PU synthetic leather is the third generation of artificial leather. The non-woven fabric with its three-dimensional structure network creates the conditions for synthetic leather to catch up with and surpass natural leather in the aspect of substrate. Combined with the newly developed technology of Pu slurry impregnation and composite surface with open pore structure, the product has played a great role in the super fine fiber surface area and strong water absorption, which makes the super fine PU synthetic leather have the inherent moisture absorption characteristics of natural leather with bundle like super fine collagen fiber.
Therefore, no matter from the internal microstructure, appearance texture, physical characteristics and people's comfort, it can be compared with the advanced natural leather. In addition, microfiber synthetic leather is superior to natural leather in chemical resistance, quality uniformity, large-scale processing adaptability, water resistance, mildew resistance and other aspects.