Hot Stamp Color Change PU Leather--One of our main products.
As a professional manufacturer with around 20 years of experience in the synthetic leather industry, Dongguan Cigno Leather Company of China has always led the industry development with innovative technologies. One of its flagship products — 0.7mm spunlace-backed thermal color-changing PU leather — has become the preferred material in many fields around the world due to its unique thermal color-changing properties, excellent texture and wide adaptability, demonstrating the company's core strength in the R&D and production of synthetic leather.
The core advantage of this PU leather lies in its precise manufacturing process and scientific material ratio.
1) High-quality spunlace non-woven fabric is selected as the base cloth, which is unwound and ironed to ensure the base is flat and uniform, providing stable support for the subsequent coating. The thickness of 0.7mm is accurately controlled to balance softness and stiffness, adapting to the needs of various application scenarios.
2) The color-changing polyurethane working pulp, which is prepared by mixing high-modulus resin, low-modulus resin, organic color paste, solvent and various functional additives in a specific ratio, is uniformly scraped and coated on the surface of the spunlace cloth at a coating amount of 1-2kg/m. The viscosity of the working pulp is controlled at 1000-4000cps/30℃. After scraping, it is quickly sent to the coagulation bath to complete the coagulation reaction for 15-45 seconds at a temperature of 15-35℃, then the residual solvent is removed by water washing, and finally dried and rolled at a temperature of 120-155℃ to form the complete PU leather finished product.
3) Among them, the core of thermal color change lies in the integration of special color paste and resin system. When the material is subjected to hot pressing at 165℃-180℃, the internal color paste molecular structure undergoes a reversible change, showing a distinct color contrast, which can return to its original state after hot pressing. The color change effect is bright, full and durable, while taking into account multiple properties such as antibacterial, wear resistance and UV resistance, meeting the current needs of environmental protection and functionalization.
If you are interested in this PU leather, please help contact with us on the details. Thanks!
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