Traditional synthetic leather is usually based on fabric, coated with synthetic resin and various plastics, which is similar to natural leather in appearance and hand feel and can be used instead of plastic products. According to the material classification, it mainly has PVC artificial leather, PU artificial leather. PVC due to its non-degradable characteristics and slowly releasing the plasticizer, will cause environmental plastic pollution, thus most countries have begun to limit the use of it. The production process of PU requires the use of organic solvent (DMF), which will produce a lot of waste gas and wastewater, causing certain environmental pollution.
