Color-changing PU is also known as pull-up leather. It is made of a kind of PU oil which is injected into leather. The diffusion and recovery of PU oil make the color of leather gradually change when it is pressed. Therefore, it is named discoloration PU.
The surface layer of the discoloration PU is transparent. After receiving the external force, the injected prap oil will be forced to transfer. The leather under pressure will lose its oiliness, and the color will gradually become lighter. Discoloration PU can be done with different grain , such as tabby, suede, smooth surface, flash powder, press, soft, substrate can be done with Cloth base, spiny base, or penetration base, etc.
Discoloration PU is a kind of fashion that combines environmental protection with discoloration due to its unique characteristics (thermochromic discoloration) and is applied in various industries, such as wine box gift packaging, leather case, notebook cover, etc. With the extensive use, the market demand is also expanding. Thermochromic PU is a kind of fashion that combines environmental protection with thermochromic discoloration.