Waterborne PU leather does not contain any harmful chemicals in its production. The production process is non-polluting. Breathable and odorless. Abrasion resistant, scratch resistant, hydrolysis resistant, yellowing resistant.
Compared with traditional synthetic leather, the most prominent is odorless, breathable, water resistant, and more importantly, harmless to human body.
The annual demand for solvent-based PU resin for synthetic leather is about 2 million tons/year, of which 70% is the solvent content of the resin; the diluted material (organic solvent) is 1:1 million, and the industry needs a total of 3.4 million tons of solvent. The recovery rate of the solvent in the wet process line is about 90%; the recovery rate of the solvent in the dry process line is only about 50%; the solvent composition is complicated in the process of finishing (coating) (except DMF, toluene, methylal, acetic acid B) Ester, methyl ethyl ketone and other 50%), strong volatility, solvent recovery is more difficult; the industry has at least 80-100 million tons of solvent discharge per year, causing serious environmental pollution; serious waste of resources: 1 million tons × 0.8 million Yuan/ton = 8 billion yuan; fire hazard + work environment health affects the physical and mental health of the workers (recruitment is difficult!)
Each 10,000 meters consumes 10 tons of coal, which is equivalent to 1 ton of coal consumed by one piece of leather. The national clean production technical standard stipulates that 0.5 tons of coal is consumed in 1 ton of leather. (not meeting national standards)
Solvent recovery accounts for 40% of total energy consumption, requires high-temperature drying and foaming, and disperses heat supply. Therefore, the total series of problems seriously impressed social development.
Huai’an kaiyue Technology Development Co., Ltd. specializes in the environmentally-friendly leather industry. The company’s new polyurethane system, which uses water instead of organic solvent as a dispersion medium, is also called water-dispersible polyurethane, water-based polyurethane or water-based polyurethane. Waterborne polyurethane uses water as solvent, has no pollution, is safe and reliable, has excellent mechanical properties, good compatibility and easy modification.
1. Solvent free – environmentally friendly
2. No solvent recovery – reduce energy consumption
3. No solvent – safe, clean and hygienic
4. Ecological synthetic leather – safe to use and degraded later.
5. Feel good
6. Good resilience
7. Easy to color
