PVC PK PU, which is more waterproof

In the manufacturing process of PVC leather, the plastic particles should be hot-melted and stirred into a paste, uniformly 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 adapt to Produce a variety of products with different softness requirements, carry out surface treatment simultaneously as they are out of the oven.

The manufacturing process of PU leather is more complicated than that of PVC leather. Since the base fabric of PU is a canvas PU material with good tensile strength, in addition to being coated on the top of the base fabric, the base fabric can also be included in the middle to make it The appearance of the base cloth cannot be seen from the outside. The physical properties of PU leather are better than that of PVC leather, with tortuous resistance, good softness, high tensile strength, and breath-ability.

The pattern of PVC leather is made by hot pressing with steel pattern rollers; the pattern of PU leather is first hot-pressed on the surface of semi-finished leather with a patterned paper, and after cooling down, the paper leather is separated to deal with the surface.

The price of PU leather is more than double that of PVC leather, and the price of PU leather with some special requirements is 2-3 times higher than that of PVC leather. Generally, the pattern paper required for PU leather can only be used 4-5 times and then will scrap it; the service cycle of pattern rollers is long, so the cost of PU leather is higher than that of PVC leather.

The waterproof effect of both the PU and PVC coating should be made according to different uses, so it is not sure which is better. The thickness of the waterproof coating is determined according to different uses.