Interwoven Structure and Resilience: Redefining the New Benchmark for Thick-Film Printing | Sanqi International HY-T Water-Based 3D Varnish

In the precision processes of high-end footwear manufacturing, the thick-film screen printing base coat process has always faced rigorous physical tests. Traditional inks, in their pursuit of ultimate three-dimensionality, often struggle to balance flexibility and durability, making the coating highly susceptible to flaws such as cracking, delamination, or yellowing under bending, low-temperature, or hot-pressing environments. Sanqi International's HY-T Water-Based 3D Varnish is an eco-friendly water-based solution born to overcome this process bottleneck. With high-polymer water-based resins as its backbone, it constructs a highly resilient elastic network at the microscopic level. This not only endows the print with a full-bodied 3D structural aesthetic but also injects a tough resilience capable of withstanding multiple extreme environmental tests, safeguarding the high-end mass production of athletic shoes, casual shoes, and outdoor footwear.

True 3D aesthetics are built upon unyielding physical performance. The core advantage of the HY-T Water-Based 3D Varnish lies in its exceptional fatigue resistance and superior adhesion. In daily wear at room temperature, it can effortlessly endure up to 120,000 repeated bending cycles with the film remaining intact. Even when placed in an extreme cold simulation chamber at -20°C, it still stably passes over 40,000 bending tests, eliminating the risks of low-temperature embrittlement, whitening, or peeling. Meanwhile, with a tensile strength exceeding 3.5KG, it forms a secure molecular-level lock with various substrates such as leather, mesh, and synthetic leather. This fundamentally eliminates the risks of delamination, edge lifting, and flaking in thick-film coatings, ensuring that the 3D lines on the shoe upper truly achieve the status of "long-lasting without cracking, and highly durable."

While endowing the coating with formidable toughness, Sanqi International's HY-T Water-Based 3D Varnish does not compromise on its pursuit of visual texture and weathering lifespan. Featuring a high solid content of 50% to 55%, the film formed is transparent and delicate. It not only perfectly preserves the original texture of the substrate but also makes the 3D effect thick, full, and softly lustrous. Facing complex outdoor and daily usage scenarios, its anti-yellowing performance reaches Level 4 and above. Coupled with excellent hydrolysis resistance, it can effectively withstand UV oxidation and the erosion of moist water vapor, thoroughly eliminating the pain points of traditional varnishes such as fogging and aging pulverization. This ensures that the shoe upper prints remain vibrant and three-dimensional even after the baptism of time.

For modern footwear factories pursuing efficient mass production, process compatibility and stability are the keys to determining production capacity. The HY-T Water-Based 3D Varnish is optimized for large-scale production. The fineness of its milky-white paste is strictly controlled below 30 microns, and its viscosity is precisely maintained in the golden range of 70,000 to 90,000 cps. This delicate texture ensures smooth screen passing and uniform leveling during screen printing, resulting in neat and stable thick-film ink stacking. Furthermore, its mildly neutral pH (7.5~8.5) is extremely gentle on various shoe upper materials. With a hot-press resistance of up to 150°C, it prevents bubbling and deformation during high-temperature hot-press lamination, significantly improving the process tolerance rate in downstream processing.

From extreme testing in the laboratory to efficient operation on the assembly line, Sanqi International's HY-T Water-Based 3D Varnish perfectly interprets the harmonious unity of water-based eco-friendliness and high-end performance through its four core advantages: high folding resistance, anti-yellowing and weather resistance, hot-press stability, and excellent printability and production efficiency. It is not merely a base coat paste, but also a solid backing for footwear enterprises on the path to green manufacturing and quality upgrading, making every 3D print on a pair of shoes a work of art that stands the dual test of time and motion.