Generally speaking, synthetic leathers other than genuine leather such as PVC and PU leather are collectively referred to as artificial leather or imitation leather. The Chinese name of PVC is polyvinylchlorid (Polyvinylchlorid,), the full name is Polyvinylchlorid, the main component is polyvinyl chloride, PU is the abbreviation of Polyurethane, and the Chinese name is polyurethane for short. Polyurethane is a kind of plastic, but this The manufacturing processes of the two products are different.

In the manufacturing process of PVC synthetic leather, the plastic particles must be melted and stirred into a paste, and evenly coated on the T/C knitted fabric base according to the specified thickness, and then entered into the foaming furnace for foaming, so that it can It is suitable for the production of various products and different requirements of softness. Surface treatment (dying, embossing, polishing, matting, polishing, etc., mainly according to specific product requirements) is carried out at the same time as baking.

The manufacturing process of PU leather is more complicated than that of PVC synthetic leather. Since the base fabric of PU is a canvas PU material with good tensile strength, it can be coated on top of the base fabric, and the base fabric can also be included in the middle to make It is impossible to see the existence of the cloth from outside. The physical properties of PU leather are better than that of PVC synthetic leather. It is resistant to tortuosity, softness, tensile strength, and breathability (PVC no). The pattern of PVC synthetic leather is made by hot pressing with steel pattern rollers; the pattern of PU leather is pressed on the surface of semi-finished leather with a pattern paper, and then the paper leather is separated after cooling down. Surface treatment. The price of PU leather is more than double that of PVC synthetic leather, and the price of some special requirements of PU leather is 2-3 times higher than that of PVC synthetic leather. Generally, the pattern paper required for PU leather can only be used 4 to 5 times and then it is scrapped; the pattern roller has a long service life, so the cost of PU leather is higher than that of PVC synthetic leather.

There are also certain differences in the scope of application of these two materials. In terms of footwear, PVC synthetic leather is mostly used in linings or non-weight-bearing parts, or to make children's shoes; PU leather can be applied to footwear fabrics or weight-bearing parts. In terms of bags, PVC synthetic leather is more suitable. This is because the items in the bag are different from the feet worn in the shoes, and will not emit heat; there is no need to bear personal weight.

The difference between PU and PVC is relatively easy. From the corners, the PU base fabric is much thicker than PVC, and the feel is different. PU has a softer feel; PVC has a harder feel; it can also be burned with fire. PU The smell is much lighter than that of PVC.