2022-05-05
"A kind of leather without dipping acid tanning method" won the national invention patent
On February 11, 2022, the State Intellectual Property Office of the People's Republic of China announced that the technical team of Yang Junzi of Wuzhi County, Hebei Province, after years of research and development, "a leather tanning method without acid immersion" was granted a national invention patent (Authorization Notice No. CN 112522455 B). The patent mainly solves the technical problem of "bare leather-leather" tanning without adding salt materials and acid leaching during the tanning process of cowhide, sheepskin and pigskin after softening, and finds a way to solve the problem of difficult treatment of tanning wastewater containing chlorine ions.
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