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It is understood that the annual output of leather in China has reached more than 100 million pieces. It is a world-recognized leather production and processing center and sales center. It produces about 1.4 million tons of leather waste each year. It also causes pollution to the environment and the quality of collagen. And chromium oxide also lost a lot. At present, the domestic use of ordinary crushing equipment to smash leather waste, crushing the skin powder size is larger, can only be applied to the production of recycled leather, low recovery value. If skin powders are to be used in modified plastics and rubbers, sufficient fineness must be achieved before they can be used to increase the compatibility of plastics and rubbers with the skin powders.
To this end, Zhejiang Fengli and Ningbo Institute of Technology, from 2007 began to tackle the issue of the utilization of leather waste resources, jointly undertaken the "leather waste as a rubber and plastics filling material technology development and industrialization" project included in Zhejiang Province in 2008 The first batch of major science and technology projects. On July 20, 2013, the project passed the Ministry of Education's scientific and technological achievements appraisal for the first time at Ningbo Institute of Technology. Experts believe that the project is mainly focused on the application of recycled recycling of Class II wastes of leather and plastics. Through nearly 10 years of efforts, it has broken through key technologies such as comminution devices and compatibility enhancement, and has achieved a number of product recycling applications. The resource utilization of waste leather and plastic has a demonstration effect and has produced significant social and ecological benefits. The project published a total of 48 academic papers, including 13 SCI/EI papers; 5 Chinese invention patents were authorized, 5 utility model patents were authorized, and 9 Chinese invention patents were applied for. This achievement has obtained a number of innovative technologies in the recycling of solid waste, reaching the international advanced level in the field of comprehensive utilization of leather/plastic waste and its composite materials technology.
Leather plastic waste crushing equipment to achieve industrialization
At the provincial science and technology award conference recently held by the Zhejiang Provincial Government, the 291 scientific and technological achievements reviewed in 2014 were rewarded, among which Zhejiang Fengli Crushing Equipment Co., Ltd. and Ningbo Institute of Technology jointly developed the “plastic wasteâ€. The key technology for enhancing the compatibility of powders and its cyclic applications" won the second prize for technological inventions. The project effectively realized the industrialization of leather plastic waste crushing equipment and achieved good social and ecological benefits.