1. The similarities and differences between discoloured leather and rubbed leather

(1) The same is that the surface color of discolored leather and rubbed discolored leather can be changed.

(2) The difference is that the color of the surface of the color-changing leather can only be changed after several strong dry rubs, and it changes where and when it is rubbed. The surface color is wiped off more, the background color is exposed, the surface color is wiped off less, and the background color is exposed less. Therefore, the degree of discoloration and the size of the area are determined by the situation of the wipe. There is no clear range limit, and there is no rule of depth, and Once the color of the surface is wiped off, although you can continue to wipe other parts to change the color, the wiped part cannot be restored to its original color.

The discoloration of discoloration leather does not need to be wiped, as long as it is stretched hard to change the color, when the tensile leather is removed and the color is retracted, the color will return to the original color.

That is to say, the color of discoloration leather can be changed back and forth, and it can be changed repeatedly. Rubbing the discoloration leather can't be restored if it is changed, it can only be changed once.

2. The similarities and differences between discoloration leather and velvet large oil discoloration leather (oil immersion discoloration leather)

(1) The same point is that both the color-changing leather and the nubuck leather are lightly polished suede leather. The reason for their discoloration is external force, and the external force disappears, and the color of the stretched part is retracted. And it can change color repeatedly.

(2) The difference is that the large oil discoloration of the velvet surface is on the suede surface, and only a large amount of saturated grease or color-changing oil material is sprayed, and no decorative color paste is sprayed, so the surface shows an unpainted suede surface. After the bad leather of the discolored leather is lightly polished, the discolored leather is sprayed with the finishing color paste at the same time, so the surface of the discolored leather shows a smooth and smooth surface after finishing without pores.

(3) The reason for the discoloration of oily leather and waxy leather is that the discolored oil layer or wax layer is sprayed before the bottom coating, that is to say, the discolored oily layer and the waxy layer cause the discoloration of the oily leather and waxy leather. The discoloration of oily leather is due to the addition of a large amount of saturated fat on the bad leather. It is the excessive amount of saturated fat that causes the velvet large oily discoloration leather and the "oil-soaked discoloration leather" to discolor.

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