Leather Identification: The main difference between PU leather and PVC leather

In general, synthetic leathers Other than leather, such as PVC and PU leather, are collectively referred to as artificial leather or imitation leather. PVC and PU are polyvinyl chloride (a kind of plastic), but the manufacturing process of these two products is not the same. In the manufacturing process of PVC leather, the plastic granules are first hot-melted and mixed into a paste, uniformly coated on the base of the T/C knitted fabric according to a predetermined thickness, and then foamed in a foaming furnace to make it adaptable. Produce a variety of different products, different requirements of the softness, at the same time out of the surface treatment (dyeing, embossing, polishing, extinction, grinding surface, etc., mainly based on specific product requirements to carry out).

PU leather is more complicated than PVC leather in the manufacturing process. Because PU's bottom cloth is a canvas PU material with good tensile strength, in addition to coating on the top of the bottom cloth, the bottom cloth can also be included in the middle. The appearance does not see the presence of cloth. PU leather physical properties better than PVC leather, resistance to twists and turns, good softness, tensile strength, permeability (PVC no). The pattern of PVC leather is made by hot pressing of a steel pattern roller; the pattern of PU leather is pressed on the surface of a semi-finished leather with a pattern paper first, and after waiting for cooling, the paper leather is separated, and the surface is made into a surface. deal with. The price of PU leather is more than double that of PVC leather. The price of certain special requirements of PU leather is 2-3 times higher than PVC leather. The pattern paper required for general PU leather can only be scrapped with 4-5 times; the life cycle of patterned roller is long, so the cost of PU leather is higher than that of PVC leather.

The scope of application of these two materials is also somewhat different. In terms of footwear, PVC leather is mostly used in lining or non-weight bearing areas, or in the manufacture of children's shoes; PU leather can be applied to the fabric of a footwear or a place subject to weight. In terms of bags, the more applicable is PVC leather. This is because the contents of the bag are different from the feet that are worn in the shoes and do not emit heat; they do not have to bear personal weight.

PU, PVC, the difference is relatively easy, from the corner to see PU's bottom cloth is much thicker than PVC, feel is also different, the soft feel of the PU; PVC feel harder; can also be used to burn, PU's The taste is lighter than the taste of PVC.

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