The difference between ordinary leather notebooks and PU Notebooks; PU veneer leather is made by treating the second and third layers of inner leather and defective leather of natural leather with a special film-making and laminating process, and covering the leather surface with a polyurethane PU surface layer. , which makes the leather surface present various colors and patterns, without losing the advantages of leather ventilation and folding resistance, and has its own uniqueness in appearance and waterproof performance.
The difference between PU leather and artificial leather is that artificial leather is the earliest substitute for leather fabrics. It is made of PVC, plasticizers and other auxiliaries, which are calendered and compounded on cloth. The advantages are low price, rich colors and patterns. Many, the disadvantage is that it is easy to become hard and brittle. PU synthetic leather is used to replace PVC artificial leather, and its price is higher than that of PVC artificial leather. In terms of chemical structure, it is closer to leather fabrics. It does not use plasticizers to achieve soft properties, so it will not become hard and brittle. At the same time, it has the advantages of rich colors and various patterns, and the price is cheaper than leather fabrics. So it is welcomed by consumers.
The difference between PVC artificial leather and PU synthetic leather can be distinguished by gasoline immersion. The method is to use a small piece of fabric, put it in gasoline for half an hour, and then take it out. If it is PVC artificial leather, it will become hard and brittle. PU synthetic leather will not become hard and brittle.
There are two ways to distinguish leather fabrics from PVC artificial leather and PU synthetic leather: one is to use the back of the fabric to distinguish, the method is that the back of PVC artificial leather and PU synthetic leather is usually cloth base (or knitted cloth base), which can be seen with the eyes. The second is to use the method of burning and melting to distinguish, the method is to take a small piece of fabric and put it on the fire, the leather fabric will not melt, while the PVC artificial leather and PU synthetic leather will melt.
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