Nowadays, green development has become an important trend. Green development concept is deeply rooted in the people's hearts, and green development will become an important grasp of sustainable development and economic structure transformation. After years of green innovation and development, the nonwovens industry has been promoting the transformation and upgrading of textile industry, and has gradually become an important force for the continuous improvement of textile industry in China and even the whole textile industry.
At present, the ecological environment and economic environment are undergoing profound changes. Green development, green products and low-carbon environmental protection have become an important issue in the industrial development. In the context of global green production and responsible consumption, nonwoven industry is facing higher requirements from regulatory, environmental organizations, supply chain and consumers. Green development has become the top priority of the future development of the industry.
To realize the green development of nonwovens industry is not only the urgent demand of the world, but also the inevitable choice of China's economic and social development, and the key to the sustainable development of the industry; To realize the green development of nonwovens industry is a major event that creates value, takes a long-term view, integrates into the international cycle and takes a leading position in it.
To realize the green development of nonwovens industry is an important way to promote the upgrading of consumption, and an important link to promote the consumption preference of science and technology, green and product function attributes; To realize the green development of nonwovens industry is an important means for the industry to break through the international green trade barrier and enhance the competitiveness of the whole industry.
As far as the research and development of nonwovens is concerned, the polymer direct mesh Nonwovens Technology has been developed and widely used in many industries and civil fields due to its simple technology and short production process. Especially the protective articles prepared by spunbond and melt blown nonwovens have been proved by people in special period, so the demand for it has increased rapidly.
However, nearly 90% of the direct mesh nonwovens are made of polypropylene (PP), and some are made of pet. These synthetic materials are from natural oil, which are non renewable resources and cannot be degraded in natural environment. Therefore, the disposal of waste has caused many environmental problems. The waste of PP direct mesh nonwovens is also included in this list.
With the promotion of novel coronavirus pneumonia, the demand for spunbonded and melted nonwoven materials for masks and protection has increased dramatically. The problem of PP spunbonded and melted nonwovens waste disposal has also been put on the agenda. PLA has been successfully ranked as a new generation of green fiber in the 21st century because of its 100% biodegradability and excellent biocompatibility.
In order to protect the environment and save resources, the direct mesh polymer nonwovens also need green raw materials urgently. Among many biodegradable materials, PLA is undoubtedly the first choice for the preparation of biodegradable nonwovens. Domestic and foreign industry enterprises have accelerated the process of improving the performance of PLA spunbond and melt blown nonwovens.
As for the application of nonwovens, with the development of technology and equipment in recent years, the energy consumption of spunlike nonwovens has decreased greatly with the adjustment of energy structure. With the development of spinning and melting technology and the improvement of drawing equipment, the energy consumption of spunbond and melt blown nonwovens has also decreased greatly with the improvement of raw materials
The energy consumption technical standard for spunbonde melt jet nonwoven fabric production covers polyester, polypropylene, PLA, nylon, polyethylene or other synthetic fibers, etc. and energy consumption limit parameters of the unit products of non-woven fabrics are formulated according to the above-mentioned process technology.