Which material is better, pvc or pu? How to distinguish the fabric of the bag is pu or pvc?The coated fabric is a kind of fabric after a special process to make the surface of the fabric to form a uniform layer of covering rubber, so that the fabric is more waterproof, windproof and other characteristics of the fabric. The market bag fabrics are leather, canvas, Oxford cloth, PA coating, PU coating, PVC coating, PE coating, EVA and so on, so how to distinguish the bag fabric is pu or pvc? pvc and pu which material is good? Here is a small introduction for you.
PU polyurethane coating in luggage are PU white glue coating and PU silver glue coating two. PU white glue and silver glue coating basic performance and PA coating similar, but PU white glue and silver glue coating feel more plump, the fabric is more elastic, better fastness, and PU silver glue coating can withstand high water pressure, as well as PU coating with moisture permeability, ventilation, abrasion resistance, etc., but the cost is high, weather resistance is poor.Generally people will call synthetic leather other than genuine leather such as: PVC, PU leather collectively as artificial leather or imitation leather. PVC and PU are both polyvinyl chloride (a kind of plastic), but the manufacturing process of these two products is not quite the same. PVC leather is manufactured by hot-melting and stirring plastic particles into a paste, coating them evenly on a T/C knitted fabric substrate at a specified thickness, and then foaming them in a foaming furnace to make them have a softness that can adapt to the production of different products and different requirements, and surface treatment (dyeing, embossing, polishing, matting, surface pilling, etc., mainly according to the specific product The surface treatment (dyeing, embossing, polishing, matting, surface pilling, etc., mainly according to the specific product requirements) is carried out at the same time as the furnace.
PU leather is a little more complicated than PVC leather in terms of manufacturing process, because the PU backing is a canvas PU material with good tensile strength, which can be coated on top of the backing, but also contains the backing in the middle, so that the backing cannot be seen from the outside. the physical properties of PU leather are better than PVC leather, with flexing resistance, good softness, high tensile strength, and breathability (PVC does not). the PVC leather The pattern of PU leather is hot pressed by steel pattern roller; the pattern of PU leather is made by a kind of pattern paper firstly hot pasted and pressed on the surface of semi-finished leather, wait for cooling down and then proceed to separate the paper leather and do surface treatment. the price of PU leather is more than double than that of PVC leather, and the price of PU leather with some special requirements is 2-3 times higher than that of PVC leather. In general, the patterned paper needed for PU leather can only be used 4-5 times and then scrapped; the patterned roller has a long life cycle, so the cost of PU leather is higher than that of PVC leather.Bags, luggage, waterproof,