Superfiber leather, full name superfine fiber polyurethane synthetic leather, is the leader of the third generation of artificial leather, emerging after PVC artificial leather and PU synthetic leather. Its uniqueness lies in the use of superfine fibers as the base fabric, rather than traditional knitted or woven fabrics. The fiber fineness of this non-woven fabric is only 1/20 of that of ordinary non-woven fabrics or even finer. This fine base fabric has been finely impregnated with PU polyurethane resin to successfully simulate the organizational structure of natural leather, thus giving superfiber leather many excellent properties, making it closer to genuine leather in structure, and even surpassing genuine leather in some performances. For this reason, superfiber leather has been widely used in many fields such as sports shoes, women's boots, car interiors, furniture sofas, high-end gloves, and electronic product jackets, and the market is growing rapidly.
The root of the excellent performance of superfiber leather lies in its unique base fabric - superfiber leather base fabric. This base fabric is made of superfine fibers through exquisite non-woven fabric technology. Next, let's take a closer look at how the structure of ultrafine fibers gives ultrafine leather these extraordinary properties.
Ultrafine fibers, also known as ultrafine deniers, have a unit of denier (dtex). Specifically, a gram of 9,000-meter-long silk is 1 denier, while the unit of fineness of silk is 1.1 denier. Although there are differences in the definition of ultrafine fibers, it is generally believed that fibers with a fineness of less than 0.3 denier can be classified as ultrafine fibers. It is worth mentioning that Japan has successfully produced ultrafine fibers with a fineness of only 0.00009 denier, which is amazingly light.
There are many types of ultrafine fibers, including ultrafine denier nylon yarn, ultrafine denier nylon yarn, ultrafine denier polyester yarn, and ultrafine denier polypropylene yarn. In my country, ultrafine fiber products are mainly ultrafine nylon fibers, while Japan is mainly ultrafine polyester fibers.