Most people would leather synthetic leather other than such as: PVC, PU leather collectively referred to as leather or imitation leather. Chinese called PVC polyvinyl chloride (Polyvinylchlorid,) full name Polyvinylchlorid, the main ingredients of PVC, PU is the abbreviation of Polyurethane, the Chinese called polyurethane called polyurethane. Are plastic one, but the manufacturing process of the two products are not the same.
PVC synthetic leather in the manufacturing process must first melt the plastic particles mixed into a paste, according to the provisions of the uniform coating thickness on the T / C knitted fabric substrate, and then into the foaming furnace for foaming, it has able to adapt to the production of different products, softness different requirements, in baked while the surface treatment (dyeing, embossed, polished, matting, grinding raising, mainly in accordance with the specific requirements for the product).
PU leather in the manufacturing process than PVC synthetic leather more complex, due to the PU base fabric is canvas PU material good tensile strength, in addition to the base fabric coated on the above, it can also be included in the middle of the base fabric to make Watch is not in the end than the existence of the cloth. The physical properties of PU leather, PVC synthetic leather than good, winding resistance, good flexibility, tensile strength, having an air permeability (PVC-free). PVC synthetic leather pattern is formed by pressing steel pattern roll; PU leather pattern is a pattern paper first heat pressed against the surface of semi-finished leather, were waiting for the paper to cool before separating leather, do Surface treatment. PU leather price is higher than PVC synthetic leather to be more than doubled, PU leather than the price of some of the special requirements of PVC synthetic leather to be 2-3 times higher. PU leather require general pattern paper will come only with 4-5 scrapped; long cycle pattern roll, so PU leather PVC synthetic leather than the cost is high.
Scope of these two materials also have some differences. In terms of footwear, PVC synthetic leather is used in the lining or bear the weight of parts, or the manufacture of shoes; PU leather or fabric can be applied to support the weight of the parts of the footwear. In terms of bags, it is more suitable PVC synthetic leather. This is because the items in the bag differs from the foot in the shoe wear, do not distribute heat; do not bear the weight of an individual.
PU, PVC difference way is easier to see from the corner of the base fabric PU PVC thick than many, feels there are also differences, PU's soft number; PVC Some feel hard; you can also use fire to burn, PU's PVC taste than to light a lot of flavor.